/*
* svgcanvas.js
*
* Licensed under the Apache License, Version 2
*
* Copyright(c) 2010 Alexis Deveria
* Copyright(c) 2010 Pavol Rusnak
* Copyright(c) 2010 Jeff Schiller
*
*/
if(!window.console) {
window.console = {};
window.console.log = function(str) {};
window.console.dir = function(str) {};
}
if(window.opera) {
window.console.log = function(str) {opera.postError(str);};
window.console.dir = function(str) {};
}
(function() {
// This fixes $(...).attr() to work as expected with SVG elements.
// Does not currently use *AttributeNS() since we rarely need that.
// See http://api.jquery.com/attr/ for basic documentation of .attr()
// Additional functionality:
// - When getting attributes, a string that's a number is return as type number.
// - If an array is supplied as first parameter, multiple values are returned
// as an object with values for each given attributes
var proxied = jQuery.fn.attr, svgns = "http://www.w3.org/2000/svg";
jQuery.fn.attr = function(key, value) {
var len = this.length;
if(!len) return this;
for(var i=0; i<len; i++) {
var elem = this[i];
// set/get SVG attribute
if(elem.namespaceURI === svgns) {
// Setting attribute
if(value !== undefined) {
elem.setAttribute(key, value);
} else if($.isArray(key)) {
// Getting attributes from array
var j = key.length, obj = {};
while(j--) {
var aname = key[j];
var attr = elem.getAttribute(aname);
// This returns a number when appropriate
if(attr || attr === "0") {
attr = isNaN(attr)?attr:attr-0;
}
obj[aname] = attr;
}
return obj;
} else if(typeof key === "object") {
// Setting attributes form object
for(v in key) {
elem.setAttribute(v, key[v]);
}
// Getting attribute
} else {
var attr = elem.getAttribute(key);
if(attr || attr === "0") {
attr = isNaN(attr)?attr:attr-0;
}
return attr;
}
} else {
return proxied.apply(this, arguments);
}
}
return this;
};
}());
function SvgCanvas(container)
{
var isOpera = !!window.opera,
isWebkit = navigator.userAgent.indexOf("AppleWebKit") != -1,
support = {},
// this defines which elements and attributes that we support
svgWhiteList = {
// SVG Elements
"a": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "id", "mask", "opacity", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "xlink:href", "xlink:title"],
"circle": ["class", "clip-path", "clip-rule", "cx", "cy", "fill", "fill-opacity", "fill-rule", "filter", "id", "mask", "opacity", "r", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
"clipPath": ["class", "clipPathUnits", "id"],
"defs": [],
"desc": [],
"ellipse": ["class", "clip-path", "clip-rule", "cx", "cy", "fill", "fill-opacity", "fill-rule", "filter", "id", "mask", "opacity", "requiredFeatures", "rx", "ry", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
"feGaussianBlur": ["class", "id", "requiredFeatures", "stdDeviation"],
"filter": ["class", "filterRes", "filterUnits", "height", "id", "primitiveUnits", "requiredFeatures", "width", "x", "xlink:href", "y"],
"foreignObject": ["class", "color", "font-size", "height", "id", "markdown", "opacity", "overflow", "requiredFeatures", "style", "transform", "width", "x", "y"],
"g": ["class", "clip-path", "clip-rule", "id", "display", "fill", "fill-opacity", "fill-rule", "filter", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
"image": ["class", "clip-path", "clip-rule", "filter", "height", "id", "mask", "opacity", "requiredFeatures", "style", "systemLanguage", "transform", "width", "x", "xlink:href", "xlink:title", "y"],
"line": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "id", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "x1", "x2", "y1", "y2"],
"linearGradient": ["class", "id", "gradientTransform", "gradientUnits", "requiredFeatures", "spreadMethod", "systemLanguage", "x1", "x2", "xlink:href", "y1", "y2"],
"marker": ["id", "class", "markerHeight", "markerUnits", "markerWidth", "orient", "preserveAspectRatio", "refX", "refY", "systemLanguage", "viewBox"],
"mask": ["class", "height", "id", "maskContentUnits", "maskUnits", "width", "x", "y"],
"metadata": ["class", "id"],
"path": ["class", "clip-path", "clip-rule", "d", "fill", "fill-opacity", "fill-rule", "filter", "id", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
"pattern": ["class", "height", "id", "patternContentUnits", "patternTransform", "patternUnits", "requiredFeatures", "style", "systemLanguage", "width", "x", "xlink:href", "y"],
"polygon": ["class", "clip-path", "clip-rule", "id", "fill", "fill-opacity", "fill-rule", "filter", "id", "class", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "points", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
"polyline": ["class", "clip-path", "clip-rule", "id", "fill", "fill-opacity", "fill-rule", "filter", "marker-end", "marker-mid", "marker-start", "mask", "opacity", "points", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform"],
"radialGradient": ["class", "cx", "cy", "fx", "fy", "gradientTransform", "gradientUnits", "id", "r", "requiredFeatures", "spreadMethod", "systemLanguage", "xlink:href"],
"rect": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "height", "id", "mask", "opacity", "requiredFeatures", "rx", "ry", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "width", "x", "y"],
"stop": ["class", "id", "offset", "requiredFeatures", "stop-color", "stop-opacity", "style", "systemLanguage"],
"svg": ["class", "clip-path", "clip-rule", "filter", "id", "height", "markdown", "mask", "preserveAspectRatio", "requiredFeatures", "style", "systemLanguage", "transform", "viewBox", "width", "xmlns", "xmlns:xlink"],
"switch": ["class", "id", "requiredFeatures", "systemLanguage"],
"symbol": ["class", "fill", "fill-opacity", "fill-rule", "filter", "font-family", "font-size", "font-style", "font-weight", "id", "opacity", "preserveAspectRatio", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "transform", "viewBox"],
"text": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "font-family", "font-size", "font-style", "font-weight", "id", "mask", "opacity", "requiredFeatures", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "text-anchor", "transform", "x", "xml:space", "y"],
"textPath": ["class", "id", "method", "requiredFeatures", "spacing", "startOffset", "style", "systemLanguage", "transform", "xlink:href"],
"title": [],
"tspan": ["class", "clip-path", "clip-rule", "dx", "dy", "fill", "fill-opacity", "fill-rule", "filter", "font-family", "font-size", "font-style", "font-weight", "id", "mask", "opacity", "requiredFeatures", "rotate", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "systemLanguage", "text-anchor", "textLength", "transform", "x", "xml:space", "y"],
"use": ["class", "clip-path", "clip-rule", "fill", "fill-opacity", "fill-rule", "filter", "height", "id", "mask", "stroke", "stroke-dasharray", "stroke-dashoffset", "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity", "stroke-width", "style", "transform", "width", "x", "xlink:href", "y"],
// MathML Elements
"annotation-xml": ["encoding"],
"maction": ["actiontype", "other", "selection"],
"math": ["class", "id", "display", "xmlns"],
"merror": [],
"mfrac": ["linethickness"],
"mi": ["mathvariant"],
"mmultiscripts": [],
"mn": [],
"mo": ["fence", "lspace", "maxsize", "minsize", "rspace", "stretchy"],
"mover": [],
"mpadded": ["lspace", "width"],
"mphantom": [],
"mprescripts": [],
"mroot": [],
"mrow": ["xlink:href", "xlink:type", "xmlns:xlink"],
"mspace": ["depth", "height", "width"],
"msqrt": [],
"mstyle": ["displaystyle", "mathbackground", "mathcolor", "mathvariant", "scriptlevel"],
"msub": [],
"msubsup": [],
"msup": [],
"mtable": ["align", "columnalign", "columnlines", "columnspacing", "displaystyle", "equalcolumns", "equalrows", "frame", "rowalign", "rowlines", "rowspacing", "width"],
"mtd": ["columnalign", "columnspan", "rowalign", "rowspan"],
"mtext": [],
"mtr": ["columnalign", "rowalign"],
"munder": [],
"munderover": [],
"none": [],
"semantics": []
},
// console.log('Start profiling')
// setTimeout(function() {
// canvas.addToSelection(canvas.getVisibleElements());
// console.log('Stop profiling')
// },3000);
uiStrings = {
"pathNodeTooltip":"Drag node to move it. Double-click node to change segment type",
"pathCtrlPtTooltip":"Drag control point to adjust curve properties"
},
toXml = function(str) {
return $('<p/>').text(str).html();
},
fromXml = function(str) {
return $('<p/>').html(str).text();
};
var unit_types = {'em':0,'ex':0,'px':1,'cm':35.43307,'mm':3.543307,'in':90,'pt':1.25,'pc':15,'%':0};
// These command objects are used for the Undo/Redo stack
// attrs contains the values that the attributes had before the change
function ChangeElementCommand(elem, attrs, text) {
this.elem = elem;
this.text = text ? ("Change " + elem.tagName + " " + text) : ("Change " + elem.tagName);
this.newValues = {};
this.oldValues = attrs;
for (var attr in attrs) {
if (attr == "#text") this.newValues[attr] = elem.textContent;
else this.newValues[attr] = elem.getAttribute(attr);
}
this.apply = function() {
var bChangedTransform = false;
for(var attr in this.newValues ) {
if (this.newValues[attr]) {
if (attr == "#text") this.elem.textContent = this.newValues[attr];
else this.elem.setAttribute(attr, this.newValues[attr]);
}
else {
if (attr == "#text") this.elem.textContent = "";
else {
this.elem.setAttribute(attr, "");
this.elem.removeAttribute(attr);
}
}
if (attr == "transform") { bChangedTransform = true; }
}
// relocate rotational transform, if necessary
if(!bChangedTransform) {
var angle = canvas.getRotationAngle(elem);
if (angle) {
var bbox = elem.getBBox();
var cx = bbox.x + bbox.width/2,
cy = bbox.y + bbox.height/2;
var rotate = ["rotate(", angle, " ", cx, ",", cy, ")"].join('');
if (rotate != elem.getAttribute("transform")) {
elem.setAttribute("transform", rotate);
}
}
}
// if we are changing layer names, re-identify all layers
if (this.elem.tagName == "title" && this.elem.parentNode.parentNode == svgcontent) {
identifyLayers();
}
return true;
};
this.unapply = function() {
var bChangedTransform = false;
for(var attr in this.oldValues ) {
if (this.oldValues[attr]) {
if (attr == "#text") this.elem.textContent = this.oldValues[attr];
else this.elem.setAttribute(attr, this.oldValues[attr]);
}
else {
if (attr == "#text") this.elem.textContent = "";
else this.elem.removeAttribute(attr);
}
if (attr == "transform") { bChangedTransform = true; }
}
// relocate rotational transform, if necessary
if(!bChangedTransform) {
var angle = canvas.getRotationAngle(elem);
if (angle) {
var bbox = elem.getBBox();
var cx = bbox.x + bbox.width/2,
cy = bbox.y + bbox.height/2;
var rotate = ["rotate(", angle, " ", cx, ",", cy, ")"].join('');
if (rotate != elem.getAttribute("transform")) {
elem.setAttribute("transform", rotate);
}
}
}
// if we are changing layer names, re-identify all layers
if (this.elem.tagName == "title" && this.elem.parentNode.parentNode == svgcontent) {
identifyLayers();
}
return true;
};
this.elements = function() { return [this.elem]; }
}
function InsertElementCommand(elem, text) {
this.elem = elem;
this.text = text || ("Create " + elem.tagName);
this.parent = elem.parentNode;
this.apply = function() {
this.elem = this.parent.insertBefore(this.elem, this.elem.nextSibling);
if (this.parent == svgcontent) {
identifyLayers();
}
};
this.unapply = function() {
this.parent = this.elem.parentNode;
this.elem = this.elem.parentNode.removeChild(this.elem);
if (this.parent == svgcontent) {
identifyLayers();
}
};
this.elements = function() { return [this.elem]; };
}
// this is created for an element that has or will be removed from the DOM
// (creating this object does not remove the element from the DOM itself)
function RemoveElementCommand(elem, parent, text) {
this.elem = elem;
this.text = text || ("Delete " + elem.tagName);
this.parent = parent;
this.apply = function() {
this.parent = this.elem.parentNode;
this.elem = this.parent.removeChild(this.elem);
if (this.parent == svgcontent) {
identifyLayers();
}
};
this.unapply = function() {
this.elem = this.parent.insertBefore(this.elem, this.elem.nextSibling);
if (this.parent == svgcontent) {
identifyLayers();
}
};
this.elements = function() { return [this.elem]; };
// special hack for webkit: remove this element's entry in the svgTransformLists map
if (svgTransformLists[elem.id]) {
delete svgTransformLists[elem.id];
}
}
function MoveElementCommand(elem, oldNextSibling, oldParent, text) {
this.elem = elem;
this.text = text ? ("Move " + elem.tagName + " to " + text) : ("Move " + elem.tagName);
this.oldNextSibling = oldNextSibling;
this.oldParent = oldParent;
this.newNextSibling = elem.nextSibling;
this.newParent = elem.parentNode;
this.apply = function() {
this.elem = this.newParent.insertBefore(this.elem, this.newNextSibling);
if (this.newParent == svgcontent) {
identifyLayers();
}
};
this.unapply = function() {
this.elem = this.oldParent.insertBefore(this.elem, this.oldNextSibling);
if (this.oldParent == svgcontent) {
identifyLayers();
}
};
this.elements = function() { return [this.elem]; };
}
// TODO: create a 'typing' command object that tracks changes in text
// if a new Typing command is created and the top command on the stack is also a Typing
// and they both affect the same element, then collapse the two commands into one
// this command object acts an arbitrary number of subcommands
function BatchCommand(text) {
this.text = text || "Batch Command";
this.stack = [];
this.apply = function() {
var len = this.stack.length;
for (var i = 0; i < len; ++i) {
this.stack[i].apply();
}
};
this.unapply = function() {
for (var i = this.stack.length-1; i >= 0; i--) {
this.stack[i].unapply();
}
};
this.elements = function() {
// iterate through all our subcommands and find all the elements we are changing
var elems = [];
var cmd = this.stack.length;
while (cmd--) {
var thisElems = this.stack[cmd].elements();
var elem = thisElems.length;
while (elem--) {
if (elems.indexOf(thisElems[elem]) == -1) elems.push(thisElems[elem]);
}
}
return elems;
};
this.addSubCommand = function(cmd) { this.stack.push(cmd); };
this.isEmpty = function() { return this.stack.length == 0; };
}
// private members
// **************************************************************************************
function Selector(id, elem) {
// this is the selector's unique number
this.id = id;
// this holds a reference to the element for which this selector is being used
this.selectedElement = elem;
// this is a flag used internally to track whether the selector is being used or not
this.locked = true;
// this function is used to reset the id and element that the selector is attached to
this.reset = function(e, update) {
this.locked = true;
this.selectedElement = e;
this.resize();
this.selectorGroup.setAttribute("display", "inline");
};
// this holds a reference to the <g> element that holds all visual elements of the selector
this.selectorGroup = addSvgElementFromJson({ "element": "g",
"attr": {"id": ("selectorGroup"+this.id)}
});
// this holds a reference to the path rect
this.selectorRect = this.selectorGroup.appendChild( addSvgElementFromJson({
"element": "path",
"attr": {
"id": ("selectedBox"+this.id),
"fill": "none",
"stroke": "#22C",
"stroke-width": "1",
"stroke-dasharray": "5,5",
// need to specify this so that the rect is not selectable
"style": "pointer-events:none"
}
}) );
// this holds a reference to the grip elements for this selector
this.selectorGrips = { "nw":null,
"n":null,
"ne":null,
"e":null,
"se":null,
"s":null,
"sw":null,
"w":null
};
this.rotateGripConnector = this.selectorGroup.appendChild( addSvgElementFromJson({
"element": "line",
"attr": {
"id": ("selectorGrip_rotateconnector_" + this.id),
"stroke": "#22C",
"stroke-width": "1"
}
}) );
this.rotateGrip = this.selectorGroup.appendChild( addSvgElementFromJson({
"element": "circle",
"attr": {
"id": ("selectorGrip_rotate_" + this.id),
"fill": "lime",
"r": 4,
"stroke": "#22C",
"stroke-width": 2,
"style": "cursor:url(images/rotate.png) 12 12, auto;"
}
}) );
// add the corner grips
for (var dir in this.selectorGrips) {
this.selectorGrips[dir] = this.selectorGroup.appendChild(
addSvgElementFromJson({
"element": "circle",
"attr": {
"id": ("selectorGrip_resize_" + dir + "_" + this.id),
"fill": "#22C",
"r": 4,
"style": ("cursor:" + dir + "-resize"),
// This expands the mouse-able area of the grips making them
// easier to grab with the mouse.
// This works in Opera and WebKit, but does not work in Firefox
// see https://bugzilla.mozilla.org/show_bug.cgi?id=500174
"stroke-width": 2,
"pointer-events":"all",
"display":"none"
}
}) );
}
this.showGrips = function(show) {
// TODO: use suspendRedraw() here
var bShow = show ? "inline" : "none";
this.rotateGrip.setAttribute("display", bShow);
this.rotateGripConnector.setAttribute("display", bShow);
var elem = this.selectedElement;
for (var dir in this.selectorGrips) {
this.selectorGrips[dir].setAttribute("display", bShow);
}
if(elem) this.updateGripCursors(canvas.getRotationAngle(elem));
};
// Updates cursors for corner grips on rotation so arrows point the right way
this.updateGripCursors = function(angle) {
var dir_arr = [];
var steps = Math.round(angle / 45);
if(steps < 0) steps += 8;
for (var dir in this.selectorGrips) {
dir_arr.push(dir);
}
while(steps > 0) {
dir_arr.push(dir_arr.shift());
steps--;
}
var i = 0;
for (var dir in this.selectorGrips) {
this.selectorGrips[dir].setAttribute('style', ("cursor:" + dir_arr[i] + "-resize"));
i++;
};
};
this.resize = function() {
var selectedBox = this.selectorRect,
selectedGrips = this.selectorGrips,
selected = this.selectedElement,
sw = round(selected.getAttribute("stroke-width"));
var offset = 1/canvas.getZoom();
if (selected.getAttribute("stroke") != "none" && !isNaN(sw)) {
offset += sw/2;
}
if (selected.tagName == "text") {
offset += 2/canvas.getZoom();
}
var bbox = canvas.getBBox(selected);
if(selected.tagName == 'g') {
// The bbox for a group does not include stroke vals, so we
// get the bbox based on its children.
var stroked_bbox = canvas.getStrokedBBox(selected.childNodes);
$.each(bbox, function(key, val) {
bbox[key] = stroked_bbox[key];
});
}
// loop and transform our bounding box until we reach our first rotation
var tlist = canvas.getTransformList(selected),
m = transformListToTransform(tlist).matrix;
// This should probably be handled somewhere else, but for now
// it keeps the selection box correctly positioned when zoomed
m.e *= current_zoom;
m.f *= current_zoom;
// apply the transforms
var l=bbox.x-offset, t=bbox.y-offset, w=bbox.width+(offset<<1), h=bbox.height+(offset<<1),
bbox = {x:l, y:t, width:w, height:h};
// we need to handle temporary transforms too
// if skewed, get its transformed box, then find its axis-aligned bbox
//*
var nbox = transformBox(l*current_zoom, t*current_zoom, w*current_zoom, h*current_zoom, m),
nbax = nbox.aabox.x,
nbay = nbox.aabox.y,
nbaw = nbox.aabox.width,
nbah = nbox.aabox.height;
// now if the shape is rotated, un-rotate it
var cx = nbax + nbaw/2,
cy = nbay + nbah/2;
var angle = canvas.getRotationAngle(selected);
if (angle) {
var rot = svgroot.createSVGTransform();
rot.setRotate(-angle,cx,cy);
var rotm = rot.matrix;
nbox.tl = transformPoint(nbox.tl.x,nbox.tl.y,rotm);
nbox.tr = transformPoint(nbox.tr.x,nbox.tr.y,rotm);
nbox.bl = transformPoint(nbox.bl.x,nbox.bl.y,rotm);
nbox.br = transformPoint(nbox.br.x,nbox.br.y,rotm);
// calculate the axis-aligned bbox
var minx = nbox.tl.x,
miny = nbox.tl.y,
maxx = nbox.tl.x,
maxy = nbox.tl.y;
minx = Math.min(minx, Math.min(nbox.tr.x, Math.min(nbox.bl.x, nbox.br.x) ) );
miny = Math.min(miny, Math.min(nbox.tr.y, Math.min(nbox.bl.y, nbox.br.y) ) );
maxx = Math.max(maxx, Math.max(nbox.tr.x, Math.max(nbox.bl.x, nbox.br.x) ) );
maxy = Math.max(maxy, Math.max(nbox.tr.y, Math.max(nbox.bl.y, nbox.br.y) ) );
nbax = minx;
nbay = miny;
nbaw = (maxx-minx);
nbah = (maxy-miny);
}
var sr_handle = svgroot.suspendRedraw(100);
var dstr = "M" + nbax + "," + nbay
+ " L" + (nbax+nbaw) + "," + nbay
+ " " + (nbax+nbaw) + "," + (nbay+nbah)
+ " " + nbax + "," + (nbay+nbah) + "z";
assignAttributes(selectedBox, {'d': dstr});
var gripCoords = {
nw: [nbax, nbay],
ne: [nbax+nbaw, nbay],
sw: [nbax, nbay+nbah],
se: [nbax+nbaw, nbay+nbah],
n: [nbax + (nbaw)/2, nbay],
w: [nbax, nbay + (nbah)/2],
e: [nbax + nbaw, nbay + (nbah)/2],
s: [nbax + (nbaw)/2, nbay + nbah]
};
if(selected == selectedElements[0]) {
for(var dir in gripCoords) {
var coords = gripCoords[dir];
assignAttributes(selectedGrips[dir], {
cx: coords[0], cy: coords[1]
});
};
}
if (angle) {
this.selectorGroup.setAttribute("transform", "rotate(" + [angle,cx,cy].join(",") + ")");
}
else {
this.selectorGroup.setAttribute("transform", "");
}
// we want to go 20 pixels in the negative transformed y direction, ignoring scale
assignAttributes(this.rotateGripConnector, { x1: nbax + (nbaw)/2,
y1: nbay,
x2: nbax + (nbaw)/2,
y2: nbay- 20});
assignAttributes(this.rotateGrip, { cx: nbax + (nbaw)/2,
cy: nbay - 20 });
svgroot.unsuspendRedraw(sr_handle);
};
// now initialize the selector
this.reset(elem);
};
function SelectorManager() {
// this will hold the <g> element that contains all selector rects/grips
this.selectorParentGroup = null;
// this is a special rect that is used for multi-select
this.rubberBandBox = null;
// this will hold objects of type Selector (see above)
this.selectors = [];
// this holds a map of SVG elements to their Selector object
this.selectorMap = {};
// local reference to this object
var mgr = this;
this.initGroup = function() {
// remove old selector parent group if it existed
if (mgr.selectorParentGroup && mgr.selectorParentGroup.parentNode) {
mgr.selectorParentGroup.parentNode.removeChild(mgr.selectorParentGroup);
}
// create parent selector group and add it to svgroot
mgr.selectorParentGroup = svgdoc.createElementNS(svgns, "g");
mgr.selectorParentGroup.setAttribute("id", "selectorParentGroup");
svgroot.appendChild(mgr.selectorParentGroup);
mgr.selectorMap = {};
mgr.selectors = [];
mgr.rubberBandBox = null;
if($("#canvasBackground").length) return;
var canvasbg = svgdoc.createElementNS(svgns, "svg");
assignAttributes(canvasbg, {
'id':'canvasBackground',
'width': 640,
'height': 480,
'x': 0,
'y': 0,
'overflow': 'visible',
'style': 'pointer-events:none'
});
var rect = svgdoc.createElementNS(svgns, "rect");
assignAttributes(rect, {
'width': '100%',
'height': '100%',
'x': 0,
'y': 0,
'stroke-width': 1,
'stroke': '#000',
'fill': '#FFF',
'style': 'pointer-events:none'
});
if (!window.opera) rect.setAttribute('filter', 'url(#canvashadow)');
canvasbg.appendChild(rect);
svgroot.insertBefore(canvasbg, svgcontent);
};
this.requestSelector = function(elem) {
if (elem == null) return null;
var N = this.selectors.length;
// if we've already acquired one for this element, return it
if (typeof(this.selectorMap[elem.id]) == "object") {
this.selectorMap[elem.id].locked = true;
return this.selectorMap[elem.id];
}
for (var i = 0; i < N; ++i) {
if (this.selectors[i] && !this.selectors[i].locked) {
this.selectors[i].locked = true;
this.selectors[i].reset(elem);
this.selectorMap[elem.id] = this.selectors[i];
return this.selectors[i];
}
}
// if we reached here, no available selectors were found, we create one
this.selectors[N] = new Selector(N, elem);
this.selectorParentGroup.appendChild(this.selectors[N].selectorGroup);
this.selectorMap[elem.id] = this.selectors[N];
return this.selectors[N];
};
this.releaseSelector = function(elem) {
if (elem == null) return;
var N = this.selectors.length,
sel = this.selectorMap[elem.id];
for (var i = 0; i < N; ++i) {
if (this.selectors[i] && this.selectors[i] == sel) {
if (sel.locked == false) {
console.log("WARNING! selector was released but was already unlocked");
}
delete this.selectorMap[elem.id];
sel.locked = false;
sel.selectedElement = null;
sel.showGrips(false);
// remove from DOM and store reference in JS but only if it exists in the DOM
try {
sel.selectorGroup.setAttribute("display", "none");
} catch(e) { }
break;
}
}
};
this.getRubberBandBox = function() {
if (this.rubberBandBox == null) {
this.rubberBandBox = this.selectorParentGroup.appendChild(
addSvgElementFromJson({ "element": "rect",
"attr": {
"id": "selectorRubberBand",
"fill": "#22C",
"fill-opacity": 0.15,
"stroke": "#22C",
"stroke-width": 0.5,
"display": "none",
"style": "pointer-events:none"
}
}));
}
return this.rubberBandBox;
};
this.initGroup();
}
// **************************************************************************************
// **************************************************************************************
// SVGTransformList implementation for Webkit
// These methods do not currently raise any exceptions.
// These methods also do not check that transforms are being inserted or handle if
// a transform is already in the list, etc. This is basically implementing as much
// of SVGTransformList that we need to get the job done.
//
// interface SVGEditTransformList {
// attribute unsigned long numberOfItems;
// void clear ( )
// SVGTransform initialize ( in SVGTransform newItem )
// SVGTransform getItem ( in unsigned long index )
// SVGTransform insertItemBefore ( in SVGTransform newItem, in unsigned long index )
// SVGTransform replaceItem ( in SVGTransform newItem, in unsigned long index )
// SVGTransform removeItem ( in unsigned long index )
// SVGTransform appendItem ( in SVGTransform newItem )
// NOT IMPLEMENTED: SVGTransform createSVGTransformFromMatrix ( in SVGMatrix matrix );
// NOT IMPLEMENTED: SVGTransform consolidate ( );
// }
// **************************************************************************************
var svgTransformLists = {};
var SVGEditTransformList = function(elem) {
this._elem = elem || null;
this._xforms = [];
// TODO: how do we capture the undo-ability in the changed transform list?
this._update = function() {
var tstr = "";
var concatMatrix = svgroot.createSVGMatrix();
for (var i = 0; i < this.numberOfItems; ++i) {
var xform = this._list.getItem(i);
tstr += transformToObj(xform).text + " ";
}
this._elem.setAttribute("transform", tstr);
};
this._list = this;
this._init = function() {
// Transform attribute parser
var str = this._elem.getAttribute("transform");
if(!str) return;
// TODO: Add skew support in future
var re = /\s*((scale|matrix|rotate|translate)\s*\(.*?\))\s*,?\s*/;
var arr = [];
var m = true;
while(m) {
m = str.match(re);
str = str.replace(re,'');
if(m && m[1]) {
var x = m[1];
var bits = x.split(/\s*\(/);
var name = bits[0];
var val_bits = bits[1].match(/\s*(.*?)\s*\)/);
var val_arr = val_bits[1].split(/[, ]+/);
var letters = 'abcdef'.split('');
var mtx = svgroot.createSVGMatrix();
$.each(val_arr, function(i, item) {
val_arr[i] = parseFloat(item);
if(name == 'matrix') {
mtx[letters[i]] = val_arr[i];
}
});
var xform = svgroot.createSVGTransform();
var fname = 'set' + name.charAt(0).toUpperCase() + name.slice(1);
var values = name=='matrix'?[mtx]:val_arr;
xform[fname].apply(xform, values);
this._list.appendItem(xform);
}
}
}
this.numberOfItems = 0;
this.clear = function() {
this.numberOfItems = 0;
this._xforms = [];
};
this.initialize = function(newItem) {
this.numberOfItems = 1;
this._xforms = [newItem];
};
this.getItem = function(index) {
if (index < this.numberOfItems && index >= 0) {
return this._xforms[index];
}
return null;
};
this.insertItemBefore = function(newItem, index) {
var retValue = null;
if (index >= 0) {
if (index < this.numberOfItems) {
var newxforms = new Array(this.numberOfItems + 1);
// TODO: use array copying and slicing
for ( var i = 0; i < index; ++i) {
newxforms[i] = this._xforms[i];
}
newxforms[i] = newItem;
for ( var j = i+1; i < this.numberOfItems; ++j, ++i) {
newxforms[j] = this._xforms[i];
}
this.numberOfItems++;
this._xforms = newxforms;
retValue = newItem;
this._list._update();
}
else {
retValue = this._list.appendItem(newItem);
}
}
return retValue;
};
this.replaceItem = function(newItem, index) {
var retValue = null;
if (index < this.numberOfItems && index >= 0) {
this._xforms[index] = newItem;
retValue = newItem;
this._list._update();
}
return retValue;
};
this.removeItem = function(index) {
var retValue = null;
if (index < this.numberOfItems && index >= 0) {
var retValue = this._xforms[index];
var newxforms = new Array(this.numberOfItems - 1);
for (var i = 0; i < index; ++i) {
newxforms[i] = this._xforms[i];
}
for (var j = i; j < this.numberOfItems-1; ++j, ++i) {
newxforms[j] = this._xforms[i+1];
}
this.numberOfItems--;
this._xforms = newxforms;
this._list._update();
}
return retValue;
};
this.appendItem = function(newItem) {
this._xforms.push(newItem);
this.numberOfItems++;
this._list._update();
return newItem;
};
};
// **************************************************************************************
var addSvgElementFromJson = function(data) {
return canvas.updateElementFromJson(data)
};
// TODO: declare the variables and set them as null, then move this setup stuff to
// an initialization function - probably just use clear()
var canvas = this,
svgns = "http://www.w3.org/2000/svg",
xlinkns = "http://www.w3.org/1999/xlink",
xmlns = "http://www.w3.org/XML/1998/namespace",
xmlnsns = "http://www.w3.org/2000/xmlns/", // see http://www.w3.org/TR/REC-xml-names/#xmlReserved
se_ns = "http://svg-edit.googlecode.com",
htmlns = "http://www.w3.org/1999/xhtml",
mathns = "http://www.w3.org/1998/Math/MathML",
idprefix = "svg_",
svgdoc = container.ownerDocument,
svgroot = svgdoc.importNode(Utils.text2xml('<svg id="svgroot" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" ' +
'width="640" height="480" x="640" y="480" overflow="visible">' +
'<defs>' +
'<filter id="canvashadow" filterUnits="objectBoundingBox">' +
'<feGaussianBlur in="SourceAlpha" stdDeviation="4" result="blur"/>'+
'<feOffset in="blur" dx="5" dy="5" result="offsetBlur"/>'+
'<feMerge>'+
'<feMergeNode in="offsetBlur"/>'+
'<feMergeNode in="SourceGraphic"/>'+
'</feMerge>'+
'</filter>'+
'</defs>'+
'</svg>').documentElement, true);
$(svgroot).appendTo(container);
var nsMap = {};
nsMap[xlinkns] = 'xlink';
nsMap[xmlns] = 'xml';
nsMap[xmlnsns] = 'xmlns';
nsMap[se_ns] = 'se';
nsMap[htmlns] = 'xhtml';
nsMap[mathns] = 'mathml';
var nsRevMap = {};
$.each(nsMap, function(key,value){
nsRevMap[value] = key;
});
// Produce a Namespace-aware version of svgWhitelist
var svgWhiteListNS = {};
$.each(svgWhiteList, function(elt,atts){
attNS = {};
$.each(atts, function(i, att){
if (att.indexOf(':') != -1) {
v=att.split(':');
attNS[v[1]] = nsRevMap[v[0]];
} else {
attNS[att] = att == 'xmlns' ? xmlnsns : null;
}
});
svgWhiteListNS[elt] = attNS;
});
var svgcontent = svgdoc.createElementNS(svgns, "svg");
$(svgcontent).attr({
id: 'svgcontent',
width: 640,
height: 480,
x: 640,
y: 480,
overflow: 'visible',
xmlns: svgns,
"xmlns:xlink": xlinkns
}).appendTo(svgroot);
var convertToNum, convertToUnit, setUnitAttr;
(function() {
var w_attrs = ['x', 'x1', 'cx', 'rx', 'width'];
var h_attrs = ['y', 'y1', 'cy', 'ry', 'height'];
var unit_attrs = $.merge(['r','radius'], w_attrs);
$.merge(unit_attrs, h_attrs);
// Converts given values to numbers. Attributes must be supplied in
// case a percentage is given
convertToNum = function(attr, val) {
// Return a number if that's what it already is
if(!isNaN(val)) return val-0;
if(val.substr(-1) === '%') {
// Deal with percentage, depends on attribute
var num = val.substr(0, val.length-1)/100;
var res = canvas.getResolution();
if($.inArray(attr, w_attrs) !== -1) {
return num * res.w;
} else if($.inArray(attr, h_attrs) !== -1) {
return num * res.h;
} else {
return num * Math.sqrt((res.w*res.w) + (res.h*res.h))/Math.sqrt(2);
}
} else {
var unit = val.substr(-2);
var num = val.substr(0, val.length-2);
// Note that this multiplication turns the string into a number
return num * unit_types[unit];
}
};
setUnitAttr = function(elem, attr, val) {
if(!isNaN(val)) {
// New value is a number, so check currently used unit
var old_val = elem.getAttribute(attr);
if(old_val !== null && isNaN(old_val)) {
// Old value was a number, so get unit, then convert
var unit;
if(old_val.substr(-1) === '%') {
var res = canvas.getResolution();
unit = '%';
val *= 100;
if($.inArray(attr, w_attrs) !== -1) {
val = val / res.w;
} else if($.inArray(attr, h_attrs) !== -1) {
val = val / res.h;
} else {
return val / Math.sqrt((res.w*res.w) + (res.h*res.h))/Math.sqrt(2);
}
} else {
unit = old_val.substr(-2);
val = val / unit_types[unit];
}
val += unit;
}
}
elem.setAttribute(attr, val);
}
canvas.isValidUnit = function(attr, val) {
var valid = false;
if($.inArray(attr, unit_attrs) != -1) {
// True if it's just a number
if(!isNaN(val)) {
valid = true;
} else {
// Not a number, check if it has a valid unit
val = val.toLowerCase();
$.each(unit_types, function(unit) {
if(valid) return;
var re = new RegExp('^-?[\\d\\.]+' + unit + '$');
if(re.test(val)) valid = true;
});
}
} else valid = true;
return valid;
}
})();
var assignAttributes = function(node, attrs, suspendLength, unitCheck) {
if(!suspendLength) suspendLength = 0;
// Opera has a problem with suspendRedraw() apparently
var handle = null;
if (!window.opera) svgroot.suspendRedraw(suspendLength);
for (var i in attrs) {
var ns = (i.substr(0,4) == "xml:" ? xmlns :
i.substr(0,6) == "xlink:" ? xlinkns : null);
if(ns || !unitCheck) {
node.setAttributeNS(ns, i, attrs[i]);
} else {
setUnitAttr(node, i, attrs[i]);
}
}
if (!window.opera) svgroot.unsuspendRedraw(handle);
};
// remove unneeded attributes
// makes resulting SVG smaller
var cleanupElement = function(element) {
var handle = svgroot.suspendRedraw(60);
var defaults = {
'fill-opacity':1,
'opacity':1,
'stroke':'none',
'stroke-dasharray':'none',
'stroke-opacity':1,
'stroke-width':1,
'rx':0,
'ry':0
}
for(var attr in defaults) {
var val = defaults[attr];
if(element.getAttribute(attr) == val) {
element.removeAttribute(attr);
}
}
svgroot.unsuspendRedraw(handle);
};
this.updateElementFromJson = function(data) {
var shape = getElem(data.attr.id);
// if shape is a path but we need to create a rect/ellipse, then remove the path
if (shape && data.element != shape.tagName) {
current_layer.removeChild(shape);
shape = null;
}
if (!shape) {
shape = svgdoc.createElementNS(svgns, data.element);
if (current_layer) {
current_layer.appendChild(shape);
}
}
assignAttributes(shape, data.attr, 100);
cleanupElement(shape);
return shape;
};
(function() {
// TODO: make this string optional and set by the client
var comment = svgdoc.createComment(" Created with SVG-edit - http://svg-edit.googlecode.com/ ");
svgcontent.appendChild(comment);
// TODO For Issue 208: this is a start on a thumbnail
// var svgthumb = svgdoc.createElementNS(svgns, "use");
// svgthumb.setAttribute('width', '100');
// svgthumb.setAttribute('height', '100');
// svgthumb.setAttributeNS(xlinkns, 'href', '#svgcontent');
// svgroot.appendChild(svgthumb);
})();
// z-ordered array of tuples containing layer names and <g> elements
// the first layer is the one at the bottom of the rendering
var all_layers = [],
encodableImages = {},
last_good_img_url = 'images/logo.png',
// pointer to the current layer <g>
current_layer = null,
save_options = {round_digits: 5},
started = false,
obj_num = 1,
start_transform = null,
current_mode = "select",
current_resize_mode = "none",
all_properties = {
shape: {
fill: "#FF0000",
fill_paint: null,
fill_opacity: 1,
stroke: "#000000",
stroke_paint: null,
stroke_opacity: 1,
stroke_width: 5,
stroke_style: 'none',
opacity: 1
}
};
all_properties.text = $.extend(true, {}, all_properties.shape);
$.extend(all_properties.text, {
fill: "#000000",
stroke_width: 0,
font_size: 24,
font_family: 'serif'
});
var cur_shape = all_properties.shape,
cur_text = all_properties.text,
cur_properties = cur_shape,
current_zoom = 1,
// this will hold all the currently selected elements
// default size of 1 until it needs to grow bigger
selectedElements = new Array(1),
// this holds the selected's bbox
selectedBBoxes = new Array(1),
justSelected = null,
// this object manages selectors for us
selectorManager = new SelectorManager(),
rubberBox = null,
events = {},
undoStackPointer = 0,
undoStack = [],
curBBoxes = [],
extensions = {};
// Should this return an array by default, so extension results aren't overwritten?
var runExtensions = this.runExtensions = function(action, vars, returnArray) {
var result = false;
if(returnArray) result = [];
$.each(extensions, function(name, opts) {
if(action in opts) {
if(returnArray) {
result.push(opts[action](vars))
} else {
result = opts[action](vars);
}
}
});
return result;
}
// This method rounds the incoming value to the nearest value based on the current_zoom
var round = function(val){
return parseInt(val*current_zoom)/current_zoom;
};
// This method sends back an array or a NodeList full of elements that
// intersect the multi-select rubber-band-box on the current_layer only.
//
// Since the only browser that supports the SVG DOM getIntersectionList is Opera,
// we need to provide an implementation here. We brute-force it for now.
//
// Reference:
// Firefox does not implement getIntersectionList(), see https://bugzilla.mozilla.org/show_bug.cgi?id=501421
// Webkit does not implement getIntersectionList(), see https://bugs.webkit.org/show_bug.cgi?id=11274
var getIntersectionList = function(rect) {
if (rubberBox == null) { return null; }
if(!curBBoxes.length) {
// Cache all bboxes
curBBoxes = canvas.getVisibleElements(current_layer, true);
}
var resultList = null;
try {
resultList = current_layer.getIntersectionList(rect, null);
} catch(e) { }
if (resultList == null || typeof(resultList.item) != "function") {
resultList = [];
var rubberBBox = rubberBox.getBBox();
$.each(rubberBBox, function(key, val) {
rubberBBox[key] = val / current_zoom;
});
var i = curBBoxes.length;
while (i--) {
if(!rubberBBox.width || !rubberBBox.width) continue;
if (Utils.rectsIntersect(rubberBBox, curBBoxes[i].bbox)) {
resultList.push(curBBoxes[i].elem);
}
}
}
// addToSelection expects an array, but it's ok to pass a NodeList
// because using square-bracket notation is allowed:
// http://www.w3.org/TR/DOM-Level-2-Core/ecma-script-binding.html
return resultList;
};
// FIXME: we MUST compress consecutive text changes to the same element
// (right now each keystroke is saved as a separate command that includes the
// entire text contents of the text element)
// TODO: consider limiting the history that we store here (need to do some slicing)
var addCommandToHistory = function(cmd) {
// if our stack pointer is not at the end, then we have to remove
// all commands after the pointer and insert the new command
if (undoStackPointer < undoStack.length && undoStack.length > 0) {
undoStack = undoStack.splice(0, undoStackPointer);
}
undoStack.push(cmd);
undoStackPointer = undoStack.length;
};
// private functions
var getId = function() {
if (events["getid"]) return call("getid", obj_num);
return idprefix + obj_num;
};
var getNextId = function() {
// ensure the ID does not exist
var id = getId();
while (getElem(id)) {
obj_num++;
id = getId();
}
return id;
};
var call = function(event, arg) {
if (events[event]) {
return events[event](this,arg);
}
};
// this function sanitizes the input node and its children
// this function only keeps what is allowed from our whitelist defined above
var sanitizeSvg = function(node) {
// we only care about element nodes
// automatically return for all comment, etc nodes
// for text, we do a whitespace trim
if (node.nodeType == 3) {
node.nodeValue = node.nodeValue.replace(/^\s+|\s+$/g, "");
// Remove empty text nodes
if(!node.nodeValue.length) node.parentNode.removeChild(node);
}
if (node.nodeType != 1) return;
var doc = node.ownerDocument;
var parent = node.parentNode;
// can parent ever be null here? I think the root node's parent is the document...
if (!doc || !parent) return;
var allowedAttrs = svgWhiteList[node.nodeName];
var allowedAttrsNS = svgWhiteListNS[node.nodeName];
// if this element is allowed
if (allowedAttrs != undefined) {
var se_attrs = [];
var i = node.attributes.length;
while (i--) {
// if the attribute is not in our whitelist, then remove it
// could use jQuery's inArray(), but I don't know if that's any better
var attr = node.attributes.item(i);
var attrName = attr.nodeName;
var attrLocalName = attr.localName;
var attrNsURI = attr.namespaceURI;
//Check that an attribute with the correct localName in the correct namespace is on our whitelist
// or is a namespace declaration for one of our allowed namespaces
if (!(allowedAttrsNS.hasOwnProperty(attrLocalName) && attrNsURI == allowedAttrsNS[attrLocalName] && attrNsURI != xmlnsns) &&
!(attrNsURI == xmlnsns && nsMap[attr.nodeValue]) ) {
// Bypassing the whitelist to allow se: prefixes. Is there
// a more appropriate way to do this?
if(attrName.indexOf('se:') == 0) {
se_attrs.push([attrName, attr.nodeValue]);
}
node.removeAttribute(attrName);
}
// special handling for path d attribute
if (node.nodeName == 'path' && attrName == 'd') {
// Convert to absolute
node.setAttribute('d',pathActions.convertPath(node));
}
// for the style attribute, rewrite it in terms of XML presentational attributes
if (attrName == "style") {
var props = attr.nodeValue.split(";"),
p = props.length;
while(p--) {
var nv = props[p].split(":");
// now check that this attribute is supported
if (allowedAttrs.indexOf(nv[0]) != -1) {
node.setAttribute(nv[0],nv[1]);
}
}
}
}
$.each(se_attrs, function(i, attr) {
node.setAttributeNS(se_ns, attr[0], attr[1]);
});
// for some elements that have a xlink:href, ensure the URI refers to a local element
// (but not for links)
var href = node.getAttributeNS(xlinkns,"href");
if(href &&
$.inArray(node.nodeName, ["filter", "linearGradient", "pattern",
"radialGradient", "textPath", "use"]) != -1)
{
// TODO: we simply check if the first character is a #, is this bullet-proof?
if (href[0] != "#") {
// remove the attribute (but keep the element)
node.setAttributeNS(xlinkns, "href", "");
node.removeAttributeNS(xlinkns, "href");
}
}
// if the element has attributes pointing to a non-local reference,
// need to remove the attribute
$.each(["clip-path", "fill", "marker-end", "marker-mid", "marker-start", "mask", "stroke"],function(i,attr) {
var val = node.getAttribute(attr);
if (val) {
val = getUrlFromAttr(val);
// simply check for first character being a '#'
if (val && val[0] != "#") {
node.setAttribute(attr, "");
node.removeAttribute(attr);
}
}
});
// recurse to children
i = node.childNodes.length;
while (i--) { sanitizeSvg(node.childNodes.item(i)); }
}
// else, remove this element
else {
// remove all children from this node and insert them before this node
// FIXME: in the case of animation elements this will hardly ever be correct
var children = [];
while (node.hasChildNodes()) {
children.push(parent.insertBefore(node.firstChild, node));
}
// remove this node from the document altogether
parent.removeChild(node);
// call sanitizeSvg on each of those children
var i = children.length;
while (i--) { sanitizeSvg(children[i]); }
}
};
// extracts the URL from the url(...) syntax of some attributes. Three variants:
// i.e. <circle fill="url(someFile.svg#foo)" /> or
// <circle fill="url('someFile.svg#foo')" /> or
// <circle fill='url("someFile.svg#foo")' />
this.getUrlFromAttr = function(attrVal) {
if (attrVal) {
// url("#somegrad")
if (attrVal.indexOf('url("') == 0) {
return attrVal.substring(5,attrVal.indexOf('"',6));
}
// url('#somegrad')
else if (attrVal.indexOf("url('") == 0) {
return attrVal.substring(5,attrVal.indexOf("'",6));
}
else if (attrVal.indexOf("url(") == 0) {
return attrVal.substring(4,attrVal.indexOf(')'));
}
}
return null;
};
var getUrlFromAttr = this.getUrlFromAttr;
var removeUnusedGrads = function() {
var defs = svgcontent.getElementsByTagNameNS(svgns, "defs");
if(!defs || !defs.length) return 0;
var all_els = svgcontent.getElementsByTagNameNS(svgns, '*'),
grad_uses = [],
numRemoved = 0;
$.each(all_els, function(i, el) {
var fill = getUrlFromAttr(el.getAttribute('fill'));
if(fill) {
grad_uses.push(fill.substr(1));
}
var stroke = getUrlFromAttr(el.getAttribute('stroke'));
if (stroke) {
grad_uses.push(stroke.substr(1));
}
// gradients can refer to other gradients
var href = el.getAttributeNS(xlinkns, "href");
if (href && href.indexOf('#') == 0) {
grad_uses.push(href.substr(1));
}
});
var lgrads = svgcontent.getElementsByTagNameNS(svgns, "linearGradient"),
grad_ids = [],
i = lgrads.length;
while (i--) {
var grad = lgrads[i];
var id = grad.id;
if($.inArray(id, grad_uses) == -1) {
// Not found, so remove
grad.parentNode.removeChild(grad);
numRemoved++;
}
}
// Remove defs if empty
var i = defs.length;
while (i--) {
var def = defs[i];
if(!def.getElementsByTagNameNS(svgns,'*').length) {
def.parentNode.removeChild(def);
}
}
return numRemoved;
}
var svgCanvasToString = function() {
// keep calling it until there are none to remove
while (removeUnusedGrads() > 0) {};
pathActions.clear(true);
// Keep SVG-Edit comment on top
$.each(svgcontent.childNodes, function(i, node) {
if(i && node.nodeType == 8 && node.data.indexOf('Created with') != -1) {
svgcontent.insertBefore(node, svgcontent.firstChild);
}
});
var output = svgToString(svgcontent, 0);
return output;
}
var svgToString = function(elem, indent) {
var out = new Array();
if (elem) {
cleanupElement(elem);
var attrs = elem.attributes,
attr,
i,
childs = elem.childNodes;
for (var i=0; i<indent; i++) out.push(" ");
out.push("<"); out.push(elem.nodeName);
if(elem.id == 'svgcontent') {
// Process root element separately
var res = canvas.getResolution();
out.push(' width="' + res.w + '" height="' + res.h + '" xmlns="'+svgns+'"');
var i = attrs.length;
while (i--) {
attr = attrs.item(i);
var attrVal = attr.nodeValue;
// only serialize attributes we don't use internally
if (attrVal != "" &&
$.inArray(attr.localName, ['width','height','xmlns','x','y','viewBox','id','overflow']) == -1)
{
// map various namespaces to our fixed namespace prefixes
// (the default xmlns attribute itself does not get a prefix)
if(!attr.namespaceURI || nsMap[attr.namespaceURI]) {
out.push(' '); out.push(attr.nodeName); out.push("=\"");
out.push(attrVal); out.push("\"");
}
}
}
} else {
for (var i=attrs.length-1; i>=0; i--) {
attr = attrs.item(i);
var attrVal = attr.nodeValue;
if (attr.localName == '-moz-math-font-style') continue;
if (attrVal != "") {
if(attrVal.indexOf('pointer-events') == 0) continue;
if(attr.localName == "class" && attrVal.indexOf('se_') == 0) continue;
out.push(" ");
if(attr.localName == 'd') attrVal = pathActions.convertPath(elem, true);
if(!isNaN(attrVal)) {
attrVal = shortFloat(attrVal);
}
// Embed images when saving
if(save_options.apply
&& elem.nodeName == 'image'
&& attr.localName == 'href'
&& save_options.images
&& save_options.images == 'embed') {
var img = encodableImages[attrVal];
if(img) attrVal = img;
}
// map various namespaces to our fixed namespace prefixes
// (the default xmlns attribute itself does not get a prefix)
if(!attr.namespaceURI || nsMap[attr.namespaceURI]) {
out.push(attr.nodeName); out.push("=\"");
out.push(attrVal); out.push("\"");
}
}
}
}
if (elem.hasChildNodes()) {
out.push(">");
indent++;
var bOneLine = false;
for (var i=0; i<childs.length; i++)
{
var child = childs.item(i);
switch(child.nodeType) {
case 1: // element node
out.push("\n");
out.push(svgToString(childs.item(i), indent));
break;
case 3: // text node
var str = child.nodeValue.replace(/^\s+|\s+$/g, "");
if (str != "") {
bOneLine = true;
out.push(toXml(str) + "");
}
break;
case 8: // comment
out.push("\n");
out.push(new Array(indent+1).join(" "));
out.push("<!--");
out.push(child.data);
out.push("-->");
break;
} // switch on node type
}
indent--;
if (!bOneLine) {
out.push("\n");
for (var i=0; i<indent; i++) out.push(" ");
}
out.push("</"); out.push(elem.nodeName); out.push(">");
} else {
out.push("/>");
}
}
return out.join('');
}; // end svgToString()
this.embedImage = function(val, callback) {
// load in the image and once it's loaded, get the dimensions
$(new Image()).load(function() {
// create a canvas the same size as the raster image
var canvas = document.createElement("canvas");
canvas.width = this.width;
canvas.height = this.height;
// load the raster image into the canvas
canvas.getContext("2d").drawImage(this,0,0);
// retrieve the data: URL
try {
var urldata = ';svgedit_url=' + encodeURIComponent(val);
urldata = canvas.toDataURL().replace(';base64',urldata+';base64');
encodableImages[val] = urldata;
} catch(e) {
encodableImages[val] = false;
}
last_good_img_url = val;
if(callback) callback(encodableImages[val]);
}).attr('src',val);
}
// importNode, like cloneNode, causes the comma-to-period
// issue in Opera/Win/non-en. Thankfully we can compare to the original XML
// and simply use the original value when necessary
this.fixOperaXML = function(elem, orig_el) {
var x_attrs = elem.attributes;
$.each(x_attrs, function(i, attr) {
if(attr.nodeValue.indexOf(',') == -1) return;
// attr val has comma, so let's get the good value
var ns = attr.prefix == 'xlink' ? xlinkns :
attr.prefix == "xml" ? xmlns : null;
var good_attrval = orig_el.getAttribute(attr.localName);
if(ns) {
elem.setAttributeNS(ns, attr.nodeName, good_attrval);
} else {
elem.setAttribute(attr.nodeName, good_attrval);
}
});
var childs = elem.childNodes;
var o_childs = orig_el.childNodes;
$.each(childs, function(i, child) {
if(child.nodeType == 1) {
canvas.fixOperaXML(child, o_childs[i]);
}
});
}
var recalculateAllSelectedDimensions = function() {
var text = (current_resize_mode == "none" ? "position" : "size");
var batchCmd = new BatchCommand(text);
var i = selectedElements.length;
while(i--) {
var cmd = recalculateDimensions(selectedElements[i]);
if (cmd) {
batchCmd.addSubCommand(cmd);
}
}
if (!batchCmd.isEmpty()) {
addCommandToHistory(batchCmd);
call("changed", selectedElements);
}
};
// this is how we map paths to our preferred relative segment types
var pathMap = [0, 'z', 'M', 'm', 'L', 'l', 'C', 'c', 'Q', 'q', 'A', 'a',
'H', 'h', 'V', 'v', 'S', 's', 'T', 't'];
var logMatrix = function(m) {
console.log([m.a,m.b,m.c,m.d,m.e,m.f]);
};
var remapElement = function(selected,changes,m) {
var remap = function(x,y) { return transformPoint(x,y,m); },
scalew = function(w) { return m.a*w; },
scaleh = function(h) { return m.d*h; },
box = canvas.getBBox(selected);
switch (selected.tagName)
{
case "line":
var pt1 = remap(changes["x1"],changes["y1"]),
pt2 = remap(changes["x2"],changes["y2"]);
changes["x1"] = pt1.x;
changes["y1"] = pt1.y;
changes["x2"] = pt2.x;
changes["y2"] = pt2.y;
break;
case "circle":
var c = remap(changes["cx"],changes["cy"]);
changes["cx"] = c.x;
changes["cy"] = c.y;
// take the minimum of the new selected box's dimensions for the new circle radius
var tbox = transformBox(box.x, box.y, box.width, box.height, m);
var w = tbox.tr.x - tbox.tl.x, h = tbox.bl.y - tbox.tl.y;
changes["r"] = Math.min(w/2, h/2);
break;
case "ellipse":
var c = remap(changes["cx"],changes["cy"]);
changes["cx"] = c.x;
changes["cy"] = c.y;
changes["rx"] = scalew(changes["rx"]);
changes["ry"] = scaleh(changes["ry"]);
break;
case "foreignObject":
case "rect":
case "image":
var pt1 = remap(changes["x"],changes["y"]);
changes["x"] = pt1.x;
changes["y"] = pt1.y;
changes["width"] = scalew(changes["width"]);
changes["height"] = scaleh(changes["height"]);
break;
case "use":
var pt1 = remap(changes["x"],changes["y"]);
changes["x"] = pt1.x;
changes["y"] = pt1.y;
break;
case "text":
// if it was a translate, then just update x,y
if (m.a == 1 && m.b == 0 && m.c == 0 && m.d == 1 &&
(m.e != 0 || m.f != 0) )
{
// [T][M] = [M][T']
// therefore [T'] = [M_inv][T][M]
var existing = transformListToTransform(selected).matrix,
t_new = matrixMultiply(existing.inverse(), m, existing);
changes["x"] = parseFloat(changes["x"]) + t_new.e;
changes["y"] = parseFloat(changes["y"]) + t_new.f;
}
else {
// we just absorb all matrices into the element and don't do any remapping
var chlist = canvas.getTransformList(selected);
var mt = svgroot.createSVGTransform();
mt.setMatrix(matrixMultiply(transformListToTransform(chlist).matrix,m));
chlist.clear();
chlist.appendItem(mt);
}
break;
case "polygon":
case "polyline":
var len = changes["points"].length;
for (var i = 0; i < len; ++i) {
var pt = changes["points"][i];
pt = remap(pt.x,pt.y);
changes["points"][i].x = pt.x;
changes["points"][i].y = pt.y;
}
break;
case "path":
var segList = selected.pathSegList;
var len = segList.numberOfItems;
changes.d = new Array(len);
for (var i = 0; i < len; ++i) {
var seg = segList.getItem(i);
changes.d[i] = {
type: seg.pathSegType,
x: seg.x,
y: seg.y,
x1: seg.x1,
y1: seg.y1,
x2: seg.x2,
y2: seg.y2,
r1: seg.r1,
r2: seg.r2,
angle: seg.angle,
largeArcFlag: seg.largeArcFlag,
sweepFlag: seg.sweepFlag
};
}
var len = changes["d"].length,
firstseg = changes["d"][0],
currentpt = remap(firstseg.x,firstseg.y);
changes["d"][0].x = currentpt.x;
changes["d"][0].y = currentpt.y;
for (var i = 1; i < len; ++i) {
var seg = changes["d"][i];
var type = seg.type;
// if absolute or first segment, we want to remap x, y, x1, y1, x2, y2
// if relative, we want to scalew, scaleh
if (type % 2 == 0) { // absolute
var thisx = (seg.x != undefined) ? seg.x : currentpt.x, // for V commands
thisy = (seg.y != undefined) ? seg.y : currentpt.y, // for H commands
pt = remap(thisx,thisy),
pt1 = remap(seg.x1,seg.y1),
pt2 = remap(seg.x2,seg.y2);
seg.x = pt.x;
seg.y = pt.y;
seg.x1 = pt1.x;
seg.y1 = pt1.y;
seg.x2 = pt2.x;
seg.y2 = pt2.y;
seg.r1 = scalew(seg.r1),
seg.r2 = scaleh(seg.r2);
}
else { // relative
seg.x = scalew(seg.x);
seg.y = scaleh(seg.y);
seg.x1 = scalew(seg.x1);
seg.y1 = scaleh(seg.y1);
seg.x2 = scalew(seg.x2);
seg.y2 = scaleh(seg.y2);
seg.r1 = scalew(seg.r1),
seg.r2 = scaleh(seg.r2);
}
// tracks the current position (for H,V commands)
if (seg.x) currentpt.x = seg.x;
if (seg.y) currentpt.y = seg.y;
} // for each segment
break;
} // switch on element type to get initial values
// now we have a set of changes and an applied reduced transform list
// we apply the changes directly to the DOM
// TODO: merge this switch with the above one and optimize
switch (selected.tagName)
{
case "foreignObject":
case "rect":
case "image":
changes.x = changes.x-0 + Math.min(0,changes.width);
changes.y = changes.y-0 + Math.min(0,changes.height);
changes.width = Math.abs(changes.width);
changes.height = Math.abs(changes.height);
assignAttributes(selected, changes, 1000, true);
break;
case "use":
assignAttributes(selected, changes, 1000, true);
break;
case "ellipse":
changes.rx = Math.abs(changes.rx);
changes.ry = Math.abs(changes.ry);
case "circle":
if(changes.r) changes.r = Math.abs(changes.r);
case "line":
case "text":
assignAttributes(selected, changes, 1000, true);
break;
case "polyline":
case "polygon":
var len = changes["points"].length;
var pstr = "";
for (var i = 0; i < len; ++i) {
var pt = changes["points"][i];
pstr += pt.x + "," + pt.y + " ";
}
selected.setAttribute("points", pstr);
break;
case "path":
var dstr = "";
var len = changes["d"].length;
for (var i = 0; i < len; ++i) {
var seg = changes["d"][i];
var type = seg.type;
dstr += pathMap[type];
switch(type) {
case 13: // relative horizontal line (h)
case 12: // absolute horizontal line (H)
dstr += seg.x + " ";
break;
case 15: // relative vertical line (v)
case 14: // absolute vertical line (V)
dstr += seg.y + " ";
break;
case 3: // relative move (m)
case 5: // relative line (l)
case 19: // relative smooth quad (t)
case 2: // absolute move (M)
case 4: // absolute line (L)
case 18: // absolute smooth quad (T)
dstr += seg.x + "," + seg.y + " ";
break;
case 7: // relative cubic (c)
case 6: // absolute cubic (C)
dstr += seg.x1 + "," + seg.y1 + " " + seg.x2 + "," + seg.y2 + " " +
seg.x + "," + seg.y + " ";
break;
case 9: // relative quad (q)
case 8: // absolute quad (Q)
dstr += seg.x + "," + seg.y + " " + seg.x1 + "," + seg.y1 + " ";
break;
case 11: // relative elliptical arc (a)
case 10: // absolute elliptical arc (A)
dstr += seg.r1 + "," + seg.r2 + " " + seg.angle + " " + Number(seg.largeArcFlag) +
" " + Number(seg.sweepFlag) + " " + seg.x + "," + seg.y + " ";
break;
case 17: // relative smooth cubic (s)
case 16: // absolute smooth cubic (S)
dstr += seg.x + "," + seg.y + " " + seg.x2 + "," + seg.y2 + " ";
break;
}
}
selected.setAttribute("d", dstr);
break;
}
};
// this function returns the command which resulted from the selected change
// TODO: use suspendRedraw() and unsuspendRedraw() around this function
var recalculateDimensions = function(selected) {
if (selected == null) return null;
var tlist = canvas.getTransformList(selected);
// remove any unnecessary transforms
if (tlist && tlist.numberOfItems > 0) {
var k = tlist.numberOfItems;
while (k--) {
var xform = tlist.getItem(k);
if (xform.type == 0) {
tlist.removeItem(k);
}
// remove identity matrices
else if (xform.type == 1) {
if (isIdentity(xform.matrix)) {
tlist.removeItem(k);
}
}
// remove zero-degree rotations
else if (xform.type == 4) {
if (xform.angle == 0) {
tlist.removeItem(k);
}
}
}
}
// if this element had no transforms, we are done
if (!tlist || tlist.numberOfItems == 0) {
selected.removeAttribute("transform");
return null;
}
// we know we have some transforms, so set up return variable
var batchCmd = new BatchCommand("Transform");
// store initial values that will be affected by reducing the transform list
var changes = {}, initial = null, attrs = [];
switch (selected.tagName)
{
case "line":
attrs = ["x1", "y1", "x2", "y2"];
break;
case "circle":
attrs = ["cx", "cy", "r"];
break;
case "ellipse":
attrs = ["cx", "cy", "rx", "ry"];
break;
case "foreignObject":
case "rect":
case "image":
attrs = ["width", "height", "x", "y"];
break;
case "use":
attrs = ["x", "y"];
break;
case "text":
attrs = ["x", "y"];
break;
case "polygon":
case "polyline":
initial = {};
initial["points"] = selected.getAttribute("points");
var list = selected.points;
var len = list.numberOfItems;
changes["points"] = new Array(len);
for (var i = 0; i < len; ++i) {
var pt = list.getItem(i);
changes["points"][i] = {x:pt.x,y:pt.y};
}
break;
case "path":
initial = {};
initial["d"] = selected.getAttribute("d");
changes["d"] = selected.getAttribute("d");
break;
} // switch on element type to get initial values
if(attrs.length) {
changes = $(selected).attr(attrs);
$.each(changes, function(attr, val) {
changes[attr] = convertToNum(attr, val);
});
}
// if we haven't created an initial array in polygon/polyline/path, then
// make a copy of initial values and include the transform
if (initial == null) {
initial = $.extend(true, {}, changes);
$.each(initial, function(attr, val) {
initial[attr] = convertToNum(attr, val);
});
}
// save the start transform value too
initial["transform"] = start_transform ? start_transform : "";
// if it's a group, we have special processing to flatten transforms
if (selected.tagName == "g" || selected.tagName == "a") {
var box = canvas.getBBox(selected),
oldcenter = {x: box.x+box.width/2, y: box.y+box.height/2},
newcenter = transformPoint(box.x+box.width/2, box.y+box.height/2,
transformListToTransform(tlist).matrix),
m = svgroot.createSVGMatrix();
// temporarily strip off the rotate and save the old center
var gangle = canvas.getRotationAngle(selected);
if (gangle) {
var a = gangle * Math.PI / 180;
if ( Math.abs(a) > (1.0e-10) ) {
var s = Math.sin(a)/(1 - Math.cos(a));
} else {
// FIXME: This blows up if the angle is exactly 0!
var s = 2/a;
}
for (var i = 0; i < tlist.numberOfItems; ++i) {
var xform = tlist.getItem(i);
if (xform.type == 4) {
// extract old center through mystical arts
var rm = xform.matrix;
oldcenter.y = (s*rm.e + rm.f)/2;
oldcenter.x = (rm.e - s*rm.f)/2;
tlist.removeItem(i);
break;
}
}
}
var tx = 0, ty = 0,
operation = 0,
N = tlist.numberOfItems;
// first, if it was a scale then the second-last transform will be it
if (N >= 3 && tlist.getItem(N-2).type == 3 &&
tlist.getItem(N-3).type == 2 && tlist.getItem(N-1).type == 2)
{
operation = 3; // scale
// if the children are unrotated, pass the scale down directly
// otherwise pass the equivalent matrix() down directly
var tm = tlist.getItem(N-3).matrix,
sm = tlist.getItem(N-2).matrix,
tmn = tlist.getItem(N-1).matrix;
var children = selected.childNodes;
var c = children.length;
while (c--) {
var child = children.item(c);
tx = 0;
ty = 0;
if (child.nodeType == 1) {
var childTlist = canvas.getTransformList(child);
var m = transformListToTransform(childTlist).matrix;
var angle = canvas.getRotationAngle(child);
var old_start_transform = start_transform;
start_transform = child.getAttribute("transform");
if(angle || hasMatrixTransform(childTlist)) {
var e2t = svgroot.createSVGTransform();
e2t.setMatrix(matrixMultiply(tm, sm, tmn, m));
childTlist.clear();
childTlist.appendItem(e2t,0);
}
// if not rotated or skewed, push the [T][S][-T] down to the child
else {
// update the transform list with translate,scale,translate
// slide the [T][S][-T] from the front to the back
// [T][S][-T][M] = [M][T2][S2][-T2]
// [T][S][-T][M] = [T][S][M][-T2]
// [-T2] = [M_inv][-T][M]
var t2n = matrixMultiply(m.inverse(), tmn, m);
// [T2] is always negative translation of [-T2]
var t2 = svgroot.createSVGMatrix();
t2.e = -t2n.e;
t2.f = -t2n.f;
// [T][S][-T][M] = [M][T2][S2][-T2]
// [S2] = [T2_inv][M_inv][T][S][-T][M][-T2_inv]
var s2 = matrixMultiply(t2.inverse(), m.inverse(), tm, sm, tmn, m, t2n.inverse());
var translateOrigin = svgroot.createSVGTransform(),
scale = svgroot.createSVGTransform(),
translateBack = svgroot.createSVGTransform();
translateOrigin.setTranslate(t2n.e, t2n.f);
scale.setScale(s2.a, s2.d);
translateBack.setTranslate(t2.e, t2.f);
childTlist.appendItem(translateBack);
childTlist.appendItem(scale);
childTlist.appendItem(translateOrigin);
} // not rotated
batchCmd.addSubCommand( recalculateDimensions(child) );
start_transform = old_start_transform;
} // element
} // for each child
// Remove these transforms from group
tlist.removeItem(N-1);
tlist.removeItem(N-2);
tlist.removeItem(N-3);
}
else if (N >= 3 && tlist.getItem(N-1).type == 1)
{
operation = 3; // scale
m = transformListToTransform(tlist).matrix;
var e2t = svgroot.createSVGTransform();
e2t.setMatrix(m);
tlist.clear();
tlist.appendItem(e2t);
}
// next, check if the first transform was a translate
// if we had [ T1 ] [ M ] we want to transform this into [ M ] [ T2 ]
// therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ]
else if ( (N == 1 || (N > 1 && tlist.getItem(1).type != 3)) &&
tlist.getItem(0).type == 2)
{
operation = 2; // translate
var T_M = transformListToTransform(tlist).matrix;
tlist.removeItem(0);
var M_inv = transformListToTransform(tlist).matrix.inverse();
var M2 = matrixMultiply( M_inv, T_M );
tx = M2.e;
ty = M2.f;
if (tx != 0 || ty != 0) {
// we pass the translates down to the individual children
var children = selected.childNodes;
var c = children.length;
while (c--) {
var child = children.item(c);
if (child.nodeType == 1) {
var old_start_transform = start_transform;
start_transform = child.getAttribute("transform");
var childTlist = canvas.getTransformList(child);
var newxlate = svgroot.createSVGTransform();
newxlate.setTranslate(tx,ty);
childTlist.insertItemBefore(newxlate, 0);
batchCmd.addSubCommand( recalculateDimensions(child) );
start_transform = old_start_transform;
}
}
start_transform = old_start_transform;
}
}
// else, a matrix imposition from a parent group
// keep pushing it down to the children
else if (N == 1 && tlist.getItem(0).type == 1 && !gangle) {
operation = 1;
var m = tlist.getItem(0).matrix,
children = selected.childNodes,
c = children.length;
while (c--) {
var child = children.item(c);
if (child.nodeType == 1) {
var old_start_transform = start_transform;
start_transform = child.getAttribute("transform");
var childTlist = canvas.getTransformList(child);
var em = matrixMultiply(m, transformListToTransform(childTlist).matrix);
var e2m = svgroot.createSVGTransform();
e2m.setMatrix(em);
childTlist.clear();
childTlist.appendItem(e2m,0);
batchCmd.addSubCommand( recalculateDimensions(child) );
start_transform = old_start_transform;
}
}
tlist.clear();
}
// else it was just a rotate
else {
if (gangle) {
var newRot = svgroot.createSVGTransform();
newRot.setRotate(gangle,newcenter.x,newcenter.y);
tlist.insertItemBefore(newRot, 0);
}
if (tlist.numberOfItems == 0) {
selected.removeAttribute("transform");
}
return null;
}
// if it was a translate, put back the rotate at the new center
if (operation == 2) {
if (gangle) {
var newRot = svgroot.createSVGTransform();
newRot.setRotate(gangle,newcenter.x,newcenter.y);
tlist.insertItemBefore(newRot, 0);
}
}
// if it was a resize
else if (operation == 3) {
var m = transformListToTransform(tlist).matrix;
var roldt = svgroot.createSVGTransform();
roldt.setRotate(gangle, oldcenter.x, oldcenter.y);
var rold = roldt.matrix;
var rnew = svgroot.createSVGTransform();
rnew.setRotate(gangle, newcenter.x, newcenter.y);
var rnew_inv = rnew.matrix.inverse(),
m_inv = m.inverse(),
extrat = matrixMultiply(m_inv, rnew_inv, rold, m);
tx = extrat.e;
ty = extrat.f;
if (tx != 0 || ty != 0) {
// now push this transform down to the children
// we pass the translates down to the individual children
var children = selected.childNodes;
var c = children.length;
while (c--) {
var child = children.item(c);
if (child.nodeType == 1) {
var old_start_transform = start_transform;
start_transform = child.getAttribute("transform");
var childTlist = canvas.getTransformList(child);
var newxlate = svgroot.createSVGTransform();
newxlate.setTranslate(tx,ty);
childTlist.insertItemBefore(newxlate, 0);
batchCmd.addSubCommand( recalculateDimensions(child) );
start_transform = old_start_transform;
}
}
}
if (gangle) {
tlist.insertItemBefore(rnew, 0);
}
}
}
// else, it's a non-group
else {
var box = canvas.getBBox(selected),
oldcenter = {x: box.x+box.width/2, y: box.y+box.height/2},
newcenter = transformPoint(box.x+box.width/2, box.y+box.height/2,
transformListToTransform(tlist).matrix),
m = svgroot.createSVGMatrix(),
// temporarily strip off the rotate and save the old center
angle = canvas.getRotationAngle(selected);
if (angle) {
var a = angle * Math.PI / 180;
if ( Math.abs(a) > (1.0e-10) ) {
var s = Math.sin(a)/(1 - Math.cos(a));
} else {
// FIXME: This blows up if the angle is exactly 0!
var s = 2/a;
}
for (var i = 0; i < tlist.numberOfItems; ++i) {
var xform = tlist.getItem(i);
if (xform.type == 4) {
// extract old center through mystical arts
var rm = xform.matrix;
oldcenter.y = (s*rm.e + rm.f)/2;
oldcenter.x = (rm.e - s*rm.f)/2;
tlist.removeItem(i);
break;
}
}
}
// 2 = translate, 3 = scale, 4 = rotate, 1 = matrix imposition
var operation = 0;
var N = tlist.numberOfItems;
// first, if it was a scale of a non-skewed element, then the second-last
// transform will be the [S]
// if we had [M][T][S][T] we want to extract the matrix equivalent of
// [T][S][T] and push it down to the element
if (N >= 3 && tlist.getItem(N-2).type == 3 &&
tlist.getItem(N-3).type == 2 && tlist.getItem(N-1).type == 2 &&
selected.nodeName != "use")
{
operation = 3; // scale
m = transformListToTransform(tlist,N-3,N-1).matrix;
tlist.removeItem(N-1);
tlist.removeItem(N-2);
tlist.removeItem(N-3);
} // if we had [T][S][-T][M], then this was a skewed element being resized
// Thus, we simply combine it all into one matrix
else if(N == 4 && tlist.getItem(N-1).type == 1) {
operation = 3; // scale
m = transformListToTransform(tlist).matrix;
var e2t = svgroot.createSVGTransform();
e2t.setMatrix(m);
tlist.clear();
tlist.appendItem(e2t);
// reset the matrix so that the element is not re-mapped
m = svgroot.createSVGMatrix();
} // if we had [R][T][S][-T][M], then this was a rotated matrix-element
// if we had [T1][M] we want to transform this into [M][T2]
// therefore [ T2 ] = [ M_inv ] [ T1 ] [ M ] and we can push [T2]
// down to the element
else if ( (N == 1 || (N > 1 && tlist.getItem(1).type != 3)) &&
tlist.getItem(0).type == 2)
{
operation = 2; // translate
var oldxlate = tlist.getItem(0).matrix,
meq = transformListToTransform(tlist,1).matrix,
meq_inv = meq.inverse();
m = matrixMultiply( meq_inv, oldxlate, meq );
tlist.removeItem(0);
}
// else if this child now has a matrix imposition (from a parent group)
// we might be able to simplify
else if (N == 1 && tlist.getItem(0).type == 1 && !angle) {
// Remap all point-based elements
m = transformListToTransform(tlist).matrix;
switch (selected.tagName) {
case 'line':
changes = $(selected).attr(["x1","y1","x2","y2"]);
case 'polyline':
case 'polygon':
changes.points = selected.getAttribute("points");
if(changes.points) {
var list = selected.points;
var len = list.numberOfItems;
changes.points = new Array(len);
for (var i = 0; i < len; ++i) {
var pt = list.getItem(i);
changes.points[i] = {x:pt.x,y:pt.y};
}
}
case 'path':
changes.d = selected.getAttribute("d");
operation = 1;
tlist.clear();
break;
default:
break;
}
}
// if it was a rotation, put the rotate back and return without a command
// (this function has zero work to do for a rotate())
else {
operation = 4; // rotation
if (angle) {
var newRot = svgroot.createSVGTransform();
newRot.setRotate(angle,newcenter.x,newcenter.y);
tlist.insertItemBefore(newRot, 0);
}
if (tlist.numberOfItems == 0) {
selected.removeAttribute("transform");
}
return null;
}
// if it was a translate or resize, we need to remap the element and absorb the xform
if (operation == 1 || operation == 2 || operation == 3) {
remapElement(selected,changes,m);
} // if we are remapping
// if it was a translate, put back the rotate at the new center
if (operation == 2) {
if (angle) {
var newRot = svgroot.createSVGTransform();
newRot.setRotate(angle,newcenter.x,newcenter.y);
tlist.insertItemBefore(newRot, 0);
}
}
// [Rold][M][T][S][-T] became [Rold][M]
// we want it to be [Rnew][M][Tr] where Tr is the
// translation required to re-center it
// Therefore, [Tr] = [M_inv][Rnew_inv][Rold][M]
else if (operation == 3) {
var m = transformListToTransform(tlist).matrix;
var roldt = svgroot.createSVGTransform();
roldt.setRotate(angle, oldcenter.x, oldcenter.y);
var rold = roldt.matrix;
var rnew = svgroot.createSVGTransform();
rnew.setRotate(angle, newcenter.x, newcenter.y);
var rnew_inv = rnew.matrix.inverse();
var m_inv = m.inverse();
var extrat = matrixMultiply(m_inv, rnew_inv, rold, m);
remapElement(selected,changes,extrat);
if (angle) {
tlist.insertItemBefore(rnew,0);
}
}
} // a non-group
// if the transform list has been emptied, remove it
if (tlist.numberOfItems == 0) {
selected.removeAttribute("transform");
}
batchCmd.addSubCommand(new ChangeElementCommand(selected, initial));
return batchCmd;
};
// public events
// Group: Selection
// Function: clearSelection
// Clears the selection. The 'selected' handler is then called.
this.clearSelection = function() {
if (selectedElements[0] != null) {
var len = selectedElements.length;
for (var i = 0; i < len; ++i) {
var elem = selectedElements[i];
if (elem == null) break;
selectorManager.releaseSelector(elem);
selectedElements[i] = null;
}
selectedBBoxes[0] = null;
}
call("selected", selectedElements);
};
// TODO: do we need to worry about selectedBBoxes here?
// Function: addToSelection
// Adds a list of elements to the selection. The 'selected' handler is then called.
//
// Parameters:
// elemsToAdd - an array of DOM elements to add to the selection
// showGrips - a boolean flag indicating whether the resize grips should be shown
this.addToSelection = function(elemsToAdd, showGrips) {
if (elemsToAdd.length == 0) { return; }
// find the first null in our selectedElements array
var j = 0;
while (j < selectedElements.length) {
if (selectedElements[j] == null) {
break;
}
++j;
}
// now add each element consecutively
var i = elemsToAdd.length;
while (i--) {
var elem = elemsToAdd[i];
// we ignore any selectors
if (!elem || elem.id.substr(0,13) == "selectorGrip_" || !this.getBBox(elem)) continue;
// if it's not already there, add it
if (selectedElements.indexOf(elem) == -1) {
selectedElements[j] = elem;
// only the first selectedBBoxes element is ever used in the codebase these days
if (j == 0) selectedBBoxes[j] = this.getBBox(elem);
j++;
var sel = selectorManager.requestSelector(elem);
if (selectedElements.length > 1) {
sel.showGrips(false);
}
}
}
call("selected", selectedElements);
if (showGrips || selectedElements.length == 1) {
selectorManager.requestSelector(selectedElements[0]).showGrips(true);
}
else {
selectorManager.requestSelector(selectedElements[0]).showGrips(false);
}
// make sure the elements are in the correct order
// See: http://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-compareDocumentPosition
selectedElements.sort(function(a,b) {
if(a && b && a.compareDocumentPosition) {
return 3 - (b.compareDocumentPosition(a) & 6);
} else if(a == null) {
return 1;
}
});
// Make sure first elements are not null
while(selectedElements[0] == null) selectedElements.shift(0);
};
// TODO: could use slice here to make this faster?
// TODO: should the 'selected' handler
// Function: removeFromSelection
// Removes elements from the selection.
//
// Parameters:
// elemsToRemove - an array of elements to remove from selection
this.removeFromSelection = function(elemsToRemove) {
if (selectedElements[0] == null) { return; }
if (elemsToRemove.length == 0) { return; }
// find every element and remove it from our array copy
var newSelectedItems = new Array(selectedElements.length),
newSelectedBBoxes = new Array(selectedBBoxes.length),
j = 0,
len = selectedElements.length;
for (var i = 0; i < len; ++i) {
var elem = selectedElements[i];
if (elem) {
// keep the item
if (elemsToRemove.indexOf(elem) == -1) {
newSelectedItems[j] = elem;
if (j==0) newSelectedBBoxes[j] = selectedBBoxes[i];
j++;
}
else { // remove the item and its selector
selectorManager.releaseSelector(elem);
}
}
}
// the copy becomes the master now
selectedElements = newSelectedItems;
selectedBBoxes = newSelectedBBoxes;
};
// Some global variables that we may need to refactor
var root_sctm = null;
// A (hopefully) quicker function to transform a point by a matrix
// (this function avoids any DOM calls and just does the math)
// Returns a x,y object representing the transformed point
var transformPoint = function(x, y, m) {
return { x: m.a * x + m.c * y + m.e, y: m.b * x + m.d * y + m.f};
};
var isIdentity = function(m) {
return (m.a == 1 && m.b == 0 && m.c == 0 && m.d == 1 && m.e == 0 && m.f == 0);
}
// expects three points to be sent, each point must have an x,y field
// returns an array of two points that are the smoothed
this.smoothControlPoints = function(ct1, ct2, pt) {
// each point must not be the origin
var x1 = ct1.x - pt.x,
y1 = ct1.y - pt.y,
x2 = ct2.x - pt.x,
y2 = ct2.y - pt.y;
if ( (x1 != 0 || y1 != 0) && (x2 != 0 || y2 != 0) ) {
var anglea = Math.atan2(y1,x1),
angleb = Math.atan2(y2,x2),
r1 = Math.sqrt(x1*x1+y1*y1),
r2 = Math.sqrt(x2*x2+y2*y2),
nct1 = svgroot.createSVGPoint(),
nct2 = svgroot.createSVGPoint();
if (anglea < 0) { anglea += 2*Math.PI; }
if (angleb < 0) { angleb += 2*Math.PI; }
var angleBetween = Math.abs(anglea - angleb),
angleDiff = Math.abs(Math.PI - angleBetween)/2;
var new_anglea, new_angleb;
if (anglea - angleb > 0) {
new_anglea = angleBetween < Math.PI ? (anglea + angleDiff) : (anglea - angleDiff);
new_angleb = angleBetween < Math.PI ? (angleb - angleDiff) : (angleb + angleDiff);
}
else {
new_anglea = angleBetween < Math.PI ? (anglea - angleDiff) : (anglea + angleDiff);
new_angleb = angleBetween < Math.PI ? (angleb + angleDiff) : (angleb - angleDiff);
}
// rotate the points
nct1.x = r1 * Math.cos(new_anglea) + pt.x;
nct1.y = r1 * Math.sin(new_anglea) + pt.y;
nct2.x = r2 * Math.cos(new_angleb) + pt.x;
nct2.y = r2 * Math.sin(new_angleb) + pt.y;
return [nct1, nct2];
}
return undefined;
};
var smoothControlPoints = this.smoothControlPoints;
// matrixMultiply() is provided because WebKit didn't implement multiply() correctly
// on the SVGMatrix interface. See https://bugs.webkit.org/show_bug.cgi?id=16062
// This function tries to return a SVGMatrix that is the multiplication m1*m2.
// We also round to zero when it's near zero
this.matrixMultiply = function() {
var NEAR_ZERO = 1e-14,
multi2 = function(m1, m2) {
var m = svgroot.createSVGMatrix();
m.a = m1.a*m2.a + m1.c*m2.b;
m.b = m1.b*m2.a + m1.d*m2.b,
m.c = m1.a*m2.c + m1.c*m2.d,
m.d = m1.b*m2.c + m1.d*m2.d,
m.e = m1.a*m2.e + m1.c*m2.f + m1.e,
m.f = m1.b*m2.e + m1.d*m2.f + m1.f;
return m;
},
args = arguments, i = args.length, m = args[i-1];
while(i-- > 1) {
var m1 = args[i-1];
m = multi2(m1, m);
}
if (Math.abs(m.a) < NEAR_ZERO) m.a = 0;
if (Math.abs(m.b) < NEAR_ZERO) m.b = 0;
if (Math.abs(m.c) < NEAR_ZERO) m.c = 0;
if (Math.abs(m.d) < NEAR_ZERO) m.d = 0;
if (Math.abs(m.e) < NEAR_ZERO) m.e = 0;
if (Math.abs(m.f) < NEAR_ZERO) m.f = 0;
return m;
}
var matrixMultiply = this.matrixMultiply;
// This returns a single matrix Transform for a given Transform List
// (this is the equivalent of SVGTransformList.consolidate() but unlike
// that method, this one does not modify the actual SVGTransformList)
// This function is very liberal with its min,max arguments
var transformListToTransform = function(tlist, min, max) {
var min = min == undefined ? 0 : min;
var max = max == undefined ? (tlist.numberOfItems-1) : max;
min = parseInt(min);
max = parseInt(max);
if (min > max) { var temp = max; max = min; min = temp; }
var m = svgroot.createSVGMatrix();
for (var i = min; i <= max; ++i) {
// if our indices are out of range, just use a harmless identity matrix
var mtom = (i >= 0 && i < tlist.numberOfItems ?
tlist.getItem(i).matrix :
svgroot.createSVGMatrix());
m = matrixMultiply(m, mtom);
}
return svgroot.createSVGTransformFromMatrix(m);
};
var hasMatrixTransform = function(tlist) {
var num = tlist.numberOfItems;
while (num--) {
var xform = tlist.getItem(num);
if (xform.type == 1 && !isIdentity(xform.matrix)) return true;
}
return false;
}
// // Easy way to loop through transform list, but may not be worthwhile
// var eachXform = function(elem, callback) {
// var tlist = canvas.getTransformList(elem);
// var num = tlist.numberOfItems;
// if(num == 0) return;
// while(num--) {
// var xform = tlist.getItem(num);
// callback(xform, tlist);
// }
// }
// FIXME: this should not have anything to do with zoom here - update the one place it is used this way
// converts a tiny object equivalent of a SVGTransform
// has the following properties:
// - tx, ty, sx, sy, angle, cx, cy, string
var transformToObj = function(xform, mZoom) {
var m = xform.matrix,
tobj = {tx:0,ty:0,sx:1,sy:1,angle:0,cx:0,cy:0,text:""},
z = mZoom?current_zoom:1;
switch(xform.type) {
case 1: // MATRIX
tobj.text = "matrix(" + [m.a,m.b,m.c,m.d,m.e,m.f].join(",") + ")";
break;
case 2: // TRANSLATE
tobj.tx = m.e;
tobj.ty = m.f;
tobj.text = "translate(" + m.e*z + "," + m.f*z + ")";
break;
case 3: // SCALE
tobj.sx = m.a;
tobj.sy = m.d;
if (m.a == m.d) tobj.text = "scale(" + m.a + ")";
else tobj.text = "scale(" + m.a + "," + m.d + ")";
break;
case 4: // ROTATE
tobj.angle = xform.angle;
// this prevents divide by zero
if (xform.angle != 0) {
var K = 1 - m.a;
tobj.cy = ( K * m.f + m.b*m.e ) / ( K*K + m.b*m.b );
tobj.cx = ( m.e - m.b * tobj.cy ) / K;
}
tobj.text = "rotate(" + xform.angle + " " + tobj.cx*z + "," + tobj.cy*z + ")";
break;
// TODO: matrix, skewX, skewY
}
return tobj;
};
var transformBox = function(l, t, w, h, m) {
var topleft = {x:l,y:t},
topright = {x:(l+w),y:t},
botright = {x:(l+w),y:(t+h)},
botleft = {x:l,y:(t+h)};
topleft = transformPoint( topleft.x, topleft.y, m );
var minx = topleft.x,
maxx = topleft.x,
miny = topleft.y,
maxy = topleft.y;
topright = transformPoint( topright.x, topright.y, m );
minx = Math.min(minx, topright.x);
maxx = Math.max(maxx, topright.x);
miny = Math.min(miny, topright.y);
maxy = Math.max(maxy, topright.y);
botleft = transformPoint( botleft.x, botleft.y, m);
minx = Math.min(minx, botleft.x);
maxx = Math.max(maxx, botleft.x);
miny = Math.min(miny, botleft.y);
maxy = Math.max(maxy, botleft.y);
botright = transformPoint( botright.x, botright.y, m );
minx = Math.min(minx, botright.x);
maxx = Math.max(maxx, botright.x);
miny = Math.min(miny, botright.y);
maxy = Math.max(maxy, botright.y);
return {tl:topleft, tr:topright, bl:botleft, br:botright,
aabox: {x:minx, y:miny, width:(maxx-minx), height:(maxy-miny)} };
};
// Mouse events
(function() {
var d_attr = null,
start_x = null,
start_y = null,
init_bbox = {},
freehand = {
minx: null,
miny: null,
maxx: null,
maxy: null
};
// - when we are in a create mode, the element is added to the canvas
// but the action is not recorded until mousing up
// - when we are in select mode, select the element, remember the position
// and do nothing else
var mouseDown = function(evt)
{
root_sctm = svgcontent.getScreenCTM().inverse();
var pt = transformPoint( evt.pageX, evt.pageY, root_sctm ),
mouse_x = pt.x * current_zoom,
mouse_y = pt.y * current_zoom;
evt.preventDefault();
if($.inArray(current_mode, ['select', 'resize']) == -1) {
addGradient();
}
var x = mouse_x / current_zoom,
y = mouse_y / current_zoom,
mouse_target = evt.target;
start_x = x;
start_y = y;
// if it was a <use>, Opera and WebKit return the SVGElementInstance
if (mouse_target.correspondingUseElement)
mouse_target = mouse_target.correspondingUseElement;
// for foreign content, go up until we find the foreignObject
// WebKit browsers set the mouse target to the svgcanvas div
if ($.inArray(mouse_target.namespaceURI, [mathns, htmlns]) != -1 &&
mouse_target.id != "svgcanvas")
{
while (mouse_target.nodeName != "foreignObject") {
mouse_target = mouse_target.parentNode;
}
}
// go up until we hit a child of a layer
while (mouse_target.parentNode.parentNode.tagName == "g") {
mouse_target = mouse_target.parentNode;
}
// Webkit bubbles the mouse event all the way up to the div, so we
// set the mouse_target to the svgroot like the other browsers
if (mouse_target.nodeName.toLowerCase() == "div") {
mouse_target = svgroot;
}
// if it is a selector grip, then it must be a single element selected,
// set the mouse_target to that and update the mode to rotate/resize
if (mouse_target.parentNode == selectorManager.selectorParentGroup && selectedElements[0] != null) {
var gripid = evt.target.id,
griptype = gripid.substr(0,20);
// rotating
if (griptype == "selectorGrip_rotate_") {
current_mode = "rotate";
}
// resizing
else if(griptype == "selectorGrip_resize_") {
current_mode = "resize";
current_resize_mode = gripid.substr(20,gripid.indexOf("_",20)-20);
}
mouse_target = selectedElements[0];
}
start_transform = mouse_target.getAttribute("transform");
var tlist = canvas.getTransformList(mouse_target);
switch (current_mode) {
case "select":
started = true;
current_resize_mode = "none";
if (mouse_target != svgroot) {
// if this element is not yet selected, clear selection and select it
if (selectedElements.indexOf(mouse_target) == -1) {
// only clear selection if shift is not pressed (otherwise, add
// element to selection)
if (!evt.shiftKey) {
canvas.clearSelection();
}
canvas.addToSelection([mouse_target]);
justSelected = mouse_target;
pathActions.clear();
}
// else if it's a path, go into pathedit mode in mouseup
// insert a dummy transform so if the element(s) are moved it will have
// a transform to use for its translate
for (var i = 0; i < selectedElements.length; ++i) {
if(selectedElements[i] == null) continue;
var slist = canvas.getTransformList(selectedElements[i]);
slist.insertItemBefore(svgroot.createSVGTransform(), 0);
}
}
else {
canvas.clearSelection();
current_mode = "multiselect";
if (rubberBox == null) {
rubberBox = selectorManager.getRubberBandBox();
}
start_x *= current_zoom;
start_y *= current_zoom;
assignAttributes(rubberBox, {
'x': start_x,
'y': start_y,
'width': 0,
'height': 0,
'display': 'inline'
}, 100);
}
break;
case "zoom":
started = true;
start_x = x;
start_y = y;
if (rubberBox == null) {
rubberBox = selectorManager.getRubberBandBox();
}
assignAttributes(rubberBox, {
'x': start_x * current_zoom,
'y': start_y * current_zoom,
'width': 0,
'height': 0,
'display': 'inline'
}, 100);
break;
case "resize":
started = true;
start_x = x;
start_y = y;
// Getting the BBox from the selection box, since we know we
// want to orient around it
init_bbox = canvas.getBBox($('#selectedBox0')[0]);
$.each(init_bbox, function(key, val) {
init_bbox[key] = val/current_zoom;
});
// append three dummy transforms to the tlist so that
// we can translate,scale,translate in mousemove
var pos = canvas.getRotationAngle(mouse_target)?1:0;
if(hasMatrixTransform(tlist)) {
tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
tlist.insertItemBefore(svgroot.createSVGTransform(), pos);
} else {
tlist.appendItem(svgroot.createSVGTransform());
tlist.appendItem(svgroot.createSVGTransform());
tlist.appendItem(svgroot.createSVGTransform());
}
break;
case "fhellipse":
case "fhrect":
case "fhpath":
started = true;
start_x = x;
start_y = y;
d_attr = x + "," + y + " ";
var stroke_w = cur_shape.stroke_width == 0?1:cur_shape.stroke_width;
addSvgElementFromJson({
"element": "polyline",
"attr": {
"points": d_attr,
"id": getNextId(),
"fill": "none",
"stroke": cur_shape.stroke,
"stroke-width": stroke_w,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"stroke-linecap": "round",
"stroke-linejoin": "round",
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:none"
}
});
freehand.minx = x;
freehand.maxx = x;
freehand.miny = y;
freehand.maxy = y;
break;
case "image":
started = true;
start_x = x;
start_y = y;
var newImage = addSvgElementFromJson({
"element": "image",
"attr": {
"x": x,
"y": y,
"width": 0,
"height": 0,
"id": getNextId(),
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:inherit"
}
});
newImage.setAttributeNS(xlinkns, "href", last_good_img_url);
preventClickDefault(newImage);
break;
case "square":
// FIXME: once we create the rect, we lose information that this was a square
// (for resizing purposes this could be important)
case "rect":
started = true;
start_x = x;
start_y = y;
addSvgElementFromJson({
"element": "rect",
"attr": {
"x": x,
"y": y,
"width": 0,
"height": 0,
"id": getNextId(),
"fill": cur_shape.fill,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:inherit"
}
});
break;
case "line":
started = true;
var stroke_w = cur_shape.stroke_width == 0?1:cur_shape.stroke_width;
addSvgElementFromJson({
"element": "line",
"attr": {
"x1": x,
"y1": y,
"x2": x,
"y2": y,
"id": getNextId(),
"stroke": cur_shape.stroke,
"stroke-width": stroke_w,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"fill": "none",
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:none"
}
});
break;
case "circle":
started = true;
addSvgElementFromJson({
"element": "circle",
"attr": {
"cx": x,
"cy": y,
"r": 0,
"id": getNextId(),
"fill": cur_shape.fill,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:inherit"
}
});
break;
case "ellipse":
started = true;
addSvgElementFromJson({
"element": "ellipse",
"attr": {
"cx": x,
"cy": y,
"rx": 0,
"ry": 0,
"id": getNextId(),
"fill": cur_shape.fill,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:inherit"
}
});
break;
case "text":
started = true;
var newText = addSvgElementFromJson({
"element": "text",
"attr": {
"x": x,
"y": y,
"id": getNextId(),
"fill": cur_text.fill,
"stroke": cur_shape.stroke,
"stroke-width": cur_text.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
// fix for bug where text elements were always 50% opacity
"opacity": cur_shape.opacity,
"font-size": cur_text.font_size,
"font-family": cur_text.font_family,
"text-anchor": "middle",
"style": "pointer-events:inherit",
"xml:space": "preserve"
}
});
newText.textContent = "text";
break;
case "foreign":
started = true;
var newText = addSvgElementFromJson({
"element": "foreignObject",
"attr": {
"x": x,
"y": y,
"id": getNextId(),
"font-size": cur_text.font_size,
"width": "24",
"height": "24",
"style": "pointer-events:inherit"
}
});
var m = svgdoc.createElementNS(mathns, 'math');
m.setAttributeNS(xmlnsns, 'xmlns', mathns);
m.setAttribute('display', 'inline');
var mi = svgdoc.createElementNS(mathns, 'mo');
mi.textContent = "\u03A6";
m.appendChild(mi);
newText.appendChild(m);
break;
case "path":
// Fall through
case "pathedit":
start_x *= current_zoom;
start_y *= current_zoom;
pathActions.mouseDown(evt, mouse_target, start_x, start_y);
started = true;
break;
case "rotate":
started = true;
// we are starting an undoable change (a drag-rotation)
canvas.beginUndoableChange("transform", selectedElements);
break;
default:
// This could occur in an extension
break;
}
var ext_result = runExtensions("mouseDown", {
event: evt,
start_x: start_x,
start_y: start_y,
selectedElements: selectedElements
});
if(ext_result) {
started = ext_result.started;
}
};
// in this function we do not record any state changes yet (but we do update
// any elements that are still being created, moved or resized on the canvas)
// TODO: svgcanvas should just retain a reference to the image being dragged instead
// of the getId() and getElementById() funkiness - this will help us customize the ids
// a little bit for squares and paths
var mouseMove = function(evt)
{
if (!started) return;
var selected = selectedElements[0],
pt = transformPoint( evt.pageX, evt.pageY, root_sctm ),
mouse_x = pt.x * current_zoom,
mouse_y = pt.y * current_zoom,
shape = getElem(getId());
x = mouse_x / current_zoom;
y = mouse_y / current_zoom;
evt.preventDefault();
switch (current_mode)
{
case "select":
// we temporarily use a translate on the element(s) being dragged
// this transform is removed upon mousing up and the element is
// relocated to the new location
if (selectedElements[0] != null) {
var dx = x - start_x;
var dy = y - start_y;
if (dx != 0 || dy != 0) {
var len = selectedElements.length;
for (var i = 0; i < len; ++i) {
var selected = selectedElements[i];
if (selected == null) break;
if (i==0) {
var box = canvas.getBBox(selected);
selectedBBoxes[i].x = box.x + dx;
selectedBBoxes[i].y = box.y + dy;
}
// update the dummy transform in our transform list
// to be a translate
var xform = svgroot.createSVGTransform();
var tlist = canvas.getTransformList(selected);
xform.setTranslate(dx,dy);
if(tlist.numberOfItems) {
tlist.replaceItem(xform, 0);
// TODO: Webkit returns null here, find out why
// console.log(selected.getAttribute("transform"))
} else {
tlist.appendItem(xform);
}
// update our internal bbox that we're tracking while dragging
selectorManager.requestSelector(selected).resize();
}
}
}
break;
case "multiselect":
x *= current_zoom;
y *= current_zoom;
assignAttributes(rubberBox, {
'x': Math.min(start_x,x),
'y': Math.min(start_y,y),
'width': Math.abs(x-start_x),
'height': Math.abs(y-start_y)
},100);
// for each selected:
// - if newList contains selected, do nothing
// - if newList doesn't contain selected, remove it from selected
// - for any newList that was not in selectedElements, add it to selected
var elemsToRemove = [], elemsToAdd = [],
newList = getIntersectionList(),
len = selectedElements.length;
for (var i = 0; i < len; ++i) {
var ind = newList.indexOf(selectedElements[i]);
if (ind == -1) {
elemsToRemove.push(selectedElements[i]);
}
else {
newList[ind] = null;
}
}
len = newList.length;
for (i = 0; i < len; ++i) { if (newList[i]) elemsToAdd.push(newList[i]); }
if (elemsToRemove.length > 0)
canvas.removeFromSelection(elemsToRemove);
if (elemsToAdd.length > 0)
canvas.addToSelection(elemsToAdd);
break;
case "resize":
// we track the resize bounding box and translate/scale the selected element
// while the mouse is down, when mouse goes up, we use this to recalculate
// the shape's coordinates
var tlist = canvas.getTransformList(selected),
hasMatrix = hasMatrixTransform(tlist),
box=hasMatrix?init_bbox:canvas.getBBox(selected),
left=box.x, top=box.y, width=box.width,
height=box.height, dx=(x-start_x), dy=(y-start_y);
// if rotated, adjust the dx,dy values
var angle = canvas.getRotationAngle(selected);
if (angle) {
var r = Math.sqrt( dx*dx + dy*dy ),
theta = Math.atan2(dy,dx) - angle * Math.PI / 180.0;
dx = r * Math.cos(theta);
dy = r * Math.sin(theta);
}
// if not stretching in y direction, set dy to 0
// if not stretching in x direction, set dx to 0
if(current_resize_mode.indexOf("n")==-1 && current_resize_mode.indexOf("s")==-1) {
dy = 0;
}
if(current_resize_mode.indexOf("e")==-1 && current_resize_mode.indexOf("w")==-1) {
dx = 0;
}
var ts = null,
tx = 0, ty = 0,
sy = height ? (height+dy)/height : 1,
sx = width ? (width+dx)/width : 1;
// if we are dragging on the north side, then adjust the scale factor and ty
if(current_resize_mode.indexOf("n") != -1) {
sy = height ? (height-dy)/height : 1;
ty = height;
}
// if we dragging on the east side, then adjust the scale factor and tx
if(current_resize_mode.indexOf("w") != -1) {
sx = width ? (width-dx)/width : 1;
tx = width;
}
// update the transform list with translate,scale,translate
var translateOrigin = svgroot.createSVGTransform(),
scale = svgroot.createSVGTransform(),
translateBack = svgroot.createSVGTransform();
translateOrigin.setTranslate(-(left+tx),-(top+ty));
if(evt.shiftKey) {
if(sx == 1) sx = sy
else sy = sx;
}
scale.setScale(sx,sy);
translateBack.setTranslate(left+tx,top+ty);
if(hasMatrix) {
var diff = angle?1:0;
tlist.replaceItem(translateOrigin, 2+diff);
tlist.replaceItem(scale, 1+diff);
tlist.replaceItem(translateBack, 0+diff);
} else {
var N = tlist.numberOfItems;
tlist.replaceItem(translateBack, N-3);
tlist.replaceItem(scale, N-2);
tlist.replaceItem(translateOrigin, N-1);
}
var selectedBBox = selectedBBoxes[0];
// reset selected bbox top-left position
selectedBBox.x = left;
selectedBBox.y = top;
// if this is a translate, adjust the box position
if (tx) {
selectedBBox.x += dx;
}
if (ty) {
selectedBBox.y += dy;
}
selectorManager.requestSelector(selected).resize();
break;
case "zoom":
x *= current_zoom;
y *= current_zoom;
assignAttributes(rubberBox, {
'x': Math.min(start_x*current_zoom,x),
'y': Math.min(start_y*current_zoom,y),
'width': Math.abs(x-start_x*current_zoom),
'height': Math.abs(y-start_y*current_zoom)
},100);
break;
case "foreignObject":
assignAttributes(shape,{
'width': 24,
'height': 24,
'x': x,
'y': y
},1000);
break;
case "text":
assignAttributes(shape,{
'x': x,
'y': y
},1000);
break;
case "line":
// Opera has a problem with suspendRedraw() apparently
var handle = null;
if (!window.opera) svgroot.suspendRedraw(1000);
shape.setAttributeNS(null, "x2", x);
shape.setAttributeNS(null, "y2", y);
if (!window.opera) svgroot.unsuspendRedraw(handle);
break;
case "square":
// fall through
case "rect":
// fall through
case "image":
var square = (current_mode == 'square') || evt.shiftKey,
w = Math.abs(x - start_x),
h = Math.abs(y - start_y),
new_x, new_y;
if(square) {
w = h = Math.max(w, h);
new_x = start_x < x ? start_x : start_x - w;
new_y = start_y < y ? start_y : start_y - h;
} else {
new_x = Math.min(start_x,x);
new_y = Math.min(start_y,y);
}
assignAttributes(shape,{
'width': w,
'height': h,
'x': new_x,
'y': new_y
},1000);
break;
case "circle":
var c = $(shape).attr(["cx", "cy"]);
var cx = c.cx, cy = c.cy,
rad = Math.sqrt( (x-cx)*(x-cx) + (y-cy)*(y-cy) );
shape.setAttributeNS(null, "r", rad);
break;
case "ellipse":
var c = $(shape).attr(["cx", "cy"]);
var cx = c.cx, cy = c.cy;
// Opera has a problem with suspendRedraw() apparently
handle = null;
if (!window.opera) svgroot.suspendRedraw(1000);
shape.setAttributeNS(null, "rx", Math.abs(x - cx) );
var ry = Math.abs(evt.shiftKey?(x - cx):(y - cy));
shape.setAttributeNS(null, "ry", ry );
if (!window.opera) svgroot.unsuspendRedraw(handle);
break;
case "fhellipse":
case "fhrect":
freehand.minx = Math.min(x, freehand.minx);
freehand.maxx = Math.max(x, freehand.maxx);
freehand.miny = Math.min(y, freehand.miny);
freehand.maxy = Math.max(y, freehand.maxy);
// break; missing on purpose
case "fhpath":
start_x = x;
start_y = y;
d_attr += + x + "," + y + " ";
shape.setAttributeNS(null, "points", d_attr);
break;
// update path stretch line coordinates
case "path":
// fall through
case "pathedit":
x *= current_zoom;
y *= current_zoom;
if(rubberBox && rubberBox.getAttribute('display') != 'none') {
assignAttributes(rubberBox, {
'x': Math.min(start_x,x),
'y': Math.min(start_y,y),
'width': Math.abs(x-start_x),
'height': Math.abs(y-start_y)
},100);
}
pathActions.mouseMove(mouse_x, mouse_y);
break;
case "rotate":
var box = canvas.getBBox(selected),
cx = box.x + box.width/2,
cy = box.y + box.height/2,
m = transformListToTransform(canvas.getTransformList(selected)).matrix,
center = transformPoint(cx,cy,m);
cx = center.x;
cy = center.y;
var angle = ((Math.atan2(cy-y,cx-x) * (180/Math.PI))-90) % 360;
canvas.setRotationAngle(angle<-180?(360+angle):angle, true);
call("changed", selectedElements);
break;
default:
break;
}
runExtensions("mouseMove", {
event: evt,
mouse_x: mouse_x,
mouse_y: mouse_y,
selected: selected
});
}; // mouseMove()
var mouseUp = function(evt)
{
var tempJustSelected = justSelected;
justSelected = null;
if (!started) return;
var pt = transformPoint( evt.pageX, evt.pageY, root_sctm ),
mouse_x = pt.x * current_zoom,
mouse_y = pt.y * current_zoom,
x = mouse_x / current_zoom,
y = mouse_y / current_zoom,
element = getElem(getId()),
keep = false;
started = false;
switch (current_mode)
{
// intentionally fall-through to select here
case "resize":
case "multiselect":
if (rubberBox != null) {
rubberBox.setAttribute("display", "none");
curBBoxes = [];
}
current_mode = "select";
case "select":
if (selectedElements[0] != null) {
// if we only have one selected element
if (selectedElements[1] == null) {
// set our current stroke/fill properties to the element's
var selected = selectedElements[0];
if (selected.tagName != "g" && selected.tagName != "image") {
cur_properties.fill = selected.getAttribute("fill");
cur_properties.fill_opacity = selected.getAttribute("fill-opacity");
cur_properties.stroke = selected.getAttribute("stroke");
cur_properties.stroke_opacity = selected.getAttribute("stroke-opacity");
cur_properties.stroke_width = selected.getAttribute("stroke-width");
cur_properties.stroke_style = selected.getAttribute("stroke-dasharray");
}
if (selected.tagName == "text") {
cur_text.font_size = selected.getAttribute("font-size");
cur_text.font_family = selected.getAttribute("font-family");
}
selectorManager.requestSelector(selected).showGrips(true);
call("selected", [selected]);
}
// always recalculate dimensions to strip off stray identity transforms
recalculateAllSelectedDimensions();
// if it was being dragged/resized
if (x != start_x || y != start_y) {
var len = selectedElements.length;
for (var i = 0; i < len; ++i) {
if (selectedElements[i] == null) break;
if(selectedElements[i].tagName != 'g') {
// Not needed for groups (incorrectly resizes elems), possibly not needed at all?
selectorManager.requestSelector(selectedElements[i]).resize();
}
}
}
// no change in position/size, so maybe we should move to pathedit
else {
var t = evt.target;
if (selectedElements[0].nodeName == "path" && selectedElements[1] == null) {
pathActions.select(t);
} // if it was a path
// else, if it was selected and this is a shift-click, remove it from selection
else if (evt.shiftKey) {
if(tempJustSelected != t) {
canvas.removeFromSelection([t]);
}
}
} // no change in mouse position
}
// we return immediately from select so that the obj_num is not incremented
return;
break;
case "zoom":
if (rubberBox != null) {
rubberBox.setAttribute("display", "none");
}
var factor = evt.shiftKey?.5:2;
call("zoomed", {
'x': Math.min(start_x,x),
'y': Math.min(start_y,y),
'width': Math.abs(x-start_x),
'height': Math.abs(y-start_y),
'factor': factor
});
return;
case "fhpath":
// Check that the path contains at least 2 points; a degenerate one-point path
// causes problems.
// Webkit ignores how we set the points attribute with commas and uses space
// to separate all coordinates, see https://bugs.webkit.org/show_bug.cgi?id=29870
var coords = element.getAttribute('points');
var commaIndex = coords.indexOf(',');
if (commaIndex >= 0) {
keep = coords.indexOf(',', commaIndex+1) >= 0;
} else {
keep = coords.indexOf(' ', coords.indexOf(' ')+1) >= 0;
}
if (keep) {
element = pathActions.smoothPolylineIntoPath(element);
}
break;
case "line":
var attrs = $(element).attr(["x1", "x2", "y1", "y2"]);
keep = (attrs.x1 != attrs.x2 || attrs.y1 != attrs.y2);
break;
case "foreign":
case "square":
case "rect":
case "image":
var attrs = $(element).attr(["width", "height"]);
keep = (attrs.width != 0 || attrs.height != 0);
break;
case "circle":
keep = (element.getAttribute('r') != 0);
break;
case "ellipse":
var attrs = $(element).attr(["rx", "ry"]);
keep = (attrs.rx != null || attrs.ry != null);
break;
case "fhellipse":
if ((freehand.maxx - freehand.minx) > 0 &&
(freehand.maxy - freehand.miny) > 0) {
element = addSvgElementFromJson({
"element": "ellipse",
"attr": {
"cx": (freehand.minx + freehand.maxx) / 2,
"cy": (freehand.miny + freehand.maxy) / 2,
"rx": (freehand.maxx - freehand.minx) / 2,
"ry": (freehand.maxy - freehand.miny) / 2,
"id": getId(),
"fill": cur_shape.fill,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"opacity": cur_shape.opacity,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
"style": "pointer-events:inherit"
}
});
call("changed",[element]);
keep = true;
}
break;
case "fhrect":
if ((freehand.maxx - freehand.minx) > 0 &&
(freehand.maxy - freehand.miny) > 0) {
element = addSvgElementFromJson({
"element": "rect",
"attr": {
"x": freehand.minx,
"y": freehand.miny,
"width": (freehand.maxx - freehand.minx),
"height": (freehand.maxy - freehand.miny),
"id": getId(),
"fill": cur_shape.fill,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"opacity": cur_shape.opacity,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
"style": "pointer-events:inherit"
}
});
call("changed",[element]);
keep = true;
}
break;
case "text":
keep = true;
canvas.clearSelection();
break;
case "path":
// set element to null here so that it is not removed nor finalized
element = null;
// continue to be set to true so that mouseMove happens
started = true;
var res = pathActions.mouseUp(evt, element, mouse_x, mouse_y);
element = res.element
keep = res.keep;
break;
case "pathedit":
keep = true;
element = null;
pathActions.mouseUp(evt);
break;
case "rotate":
keep = true;
element = null;
current_mode = "select";
var batchCmd = canvas.finishUndoableChange();
if (!batchCmd.isEmpty()) {
addCommandToHistory(batchCmd);
}
// perform recalculation to weed out any stray identity transforms that might get stuck
recalculateAllSelectedDimensions();
break;
default:
// This could occur in an extension
break;
}
var ext_result = runExtensions("mouseUp", {
event: evt,
mouse_x: mouse_x,
mouse_y: mouse_y
});
if(ext_result) {
keep = ext_result.keep;
element = ext_result.element;
started = ext_result.started;
}
if (!keep && element != null) {
element.parentNode.removeChild(element);
element = null;
var t = evt.target;
// if this element is in a group, go up until we reach the top-level group
// just below the layer groups
// TODO: once we implement links, we also would have to check for <a> elements
while (t.parentNode.parentNode.tagName == "g") {
t = t.parentNode;
}
// if we are not in the middle of creating a path, and we've clicked on some shape,
// then go to Select mode.
// WebKit returns <div> when the canvas is clicked, Firefox/Opera return <svg>
if ( (current_mode != "path" || current_path_pts.length == 0) &&
t.parentNode.id != "selectorParentGroup" &&
t.id != "svgcanvas" && t.id != "svgroot")
{
// switch into "select" mode if we've clicked on an element
canvas.addToSelection([t], true);
canvas.setMode("select");
}
} else if (element != null) {
canvas.addedNew = true;
element.setAttribute("opacity", cur_shape.opacity);
element.setAttribute("style", "pointer-events:inherit");
cleanupElement(element);
if(current_mode == "path") {
pathActions.toEditMode(element);
} else if (current_mode == "text" || current_mode == "image" || current_mode == "foreign") {
// keep us in the tool we were in unless it was a text or image element
canvas.addToSelection([element], true);
}
// we create the insert command that is stored on the stack
// undo means to call cmd.unapply(), redo means to call cmd.apply()
addCommandToHistory(new InsertElementCommand(element));
call("changed",[element]);
}
start_transform = null;
};
// prevent links from being followed in the canvas
var handleLinkInCanvas = function(e) {
e.preventDefault();
return false;
};
$(container).mousedown(mouseDown).mousemove(mouseMove).click(handleLinkInCanvas);
$(window).mouseup(mouseUp);
$(container).bind("mousewheel DOMMouseScroll", function(e){
if(!e.shiftKey) return;
e.preventDefault();
root_sctm = svgcontent.getScreenCTM().inverse();
var pt = transformPoint( e.pageX, e.pageY, root_sctm );
var bbox = {
'x': pt.x,
'y': pt.y,
'width': 0,
'height': 0
};
// Respond to mouse wheel in IE/Webkit/Opera.
// (It returns up/dn motion in multiples of 120)
if(e.wheelDelta) {
if (e.wheelDelta >= 120) {
bbox.factor = 2;
} else if (e.wheelDelta <= -120) {
bbox.factor = .5;
}
} else if(e.detail) {
if (e.detail > 0) {
bbox.factor = .5;
} else if (e.detail < 0) {
bbox.factor = 2;
}
}
if(!bbox.factor) return;
call("zoomed", bbox);
});
}());
var pathActions = function() {
var pathFuncs = [],
current_path = null,
current_path_pts = [],
current_path_pt = -1,
current_path_pt_drag = -1,
current_path_oldd = null,
current_ctrl_pt_drag = -1,
link_control_pts = false,
selected_pts = [],
is_closed = false,
hasMoved = false;
var getD = function() {
return current_path.getAttribute('d');
};
var endChanges = function(d, text) {
var cmd = new ChangeElementCommand(current_path, {d:d}, text);
addCommandToHistory(cmd);
call("changed", [current_path]);
}
var resetPointGrips = function() {
if(!current_path) return;
var sr = svgroot.suspendRedraw(100);
removeAllPointGripsFromPath();
recalcPathPoints();
addAllPointGripsToPath();
svgroot.unsuspendRedraw(sr);
};
var setPointContainerTransform = function(value) {
var conts = $('#pathpointgrip_container,#ctrlpointgrip_container');
$.each(conts,function() {
if(!value) {
this.removeAttribute("transform");
} else {
this.setAttribute("transform", value);
}
});
}
var recalcPathPoints = function() {
current_path_pts = [];
var segList = current_path.pathSegList;
var curx = segList.getItem(0).x, cury = segList.getItem(0).y;
current_path_pts.push(curx * current_zoom);
current_path_pts.push(cury * current_zoom);
var len = segList.numberOfItems;
for (var i = 1; i < len; ++i) {
var l = segList.getItem(i);
var x = l.x, y = l.y;
// paths can now be closed, skip Z segments
if (l.pathSegType == 1) {
break;
}
var type = l.pathSegType;
// current_path_pts just holds the absolute coords
if (type == 4) {
curx = x;
cury = y;
} // type 4 (abs line)
else if (type == 5) {
curx += x;
cury += y;
} // type 5 (rel line)
else if (type == 6) {
curx = x;
cury = y;
} // type 6 (abs curve)
else if (type == 7) {
curx += x;
cury += y;
} // type 7 (rel curve)
current_path_pts.push(curx * current_zoom);
current_path_pts.push(cury * current_zoom);
} // for each segment
}
var removeAllPointGripsFromPath = function() {
// loop through and hide all pointgrips
$('#pathpointgrip_container > *').attr("display", "none");
var line = getElem("path_stretch_line");
if (line) line.setAttribute("display", "none");
$('#ctrlpointgrip_container *').attr('display','none');
};
// This function converts a polyline (created by the fh_path tool) into
// a path element and coverts every three line segments into a single bezier
// curve in an attempt to smooth out the free-hand
var smoothPolylineIntoPath = function(element) {
var points = element.points;
var N = points.numberOfItems;
if (N >= 4) {
// loop through every 3 points and convert to a cubic bezier curve segment
//
// NOTE: this is cheating, it means that every 3 points has the potential to
// be a corner instead of treating each point in an equal manner. In general,
// this technique does not look that good.
//
// I am open to better ideas!
//
// Reading:
// - http://www.efg2.com/Lab/Graphics/Jean-YvesQueinecBezierCurves.htm
// - http://www.codeproject.com/KB/graphics/BezierSpline.aspx?msg=2956963
// - http://www.ian-ko.com/ET_GeoWizards/UserGuide/smooth.htm
// - http://www.cs.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/Bezier/bezier-der.html
var curpos = points.getItem(0), prevCtlPt = null;
var d = [];
d.push(["M",curpos.x,",",curpos.y," C"].join(""));
for (var i = 1; i <= (N-4); i += 3) {
var ct1 = points.getItem(i);
var ct2 = points.getItem(i+1);
var end = points.getItem(i+2);
// if the previous segment had a control point, we want to smooth out
// the control points on both sides
if (prevCtlPt) {
var newpts = smoothControlPoints( prevCtlPt, ct1, curpos );
if (newpts && newpts.length == 2) {
var prevArr = d[d.length-1].split(',');
prevArr[2] = newpts[0].x;
prevArr[3] = newpts[0].y;
d[d.length-1] = prevArr.join(',');
ct1 = newpts[1];
}
}
d.push([ct1.x,ct1.y,ct2.x,ct2.y,end.x,end.y].join(','));
curpos = end;
prevCtlPt = ct2;
}
// handle remaining line segments
d.push("L");
for(;i < N;++i) {
var pt = points.getItem(i);
d.push([pt.x,pt.y].join(","));
}
d = d.join(" ");
// create new path element
element = addSvgElementFromJson({
"element": "path",
"attr": {
"id": getId(),
"d": d,
"fill": "none",
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"opacity": cur_shape.opacity,
"stroke-opacity": cur_shape.stroke_opacity,
"fill-opacity": cur_shape.fill_opacity,
"style": "pointer-events:inherit"
}
});
call("changed",[element]);
}
return element;
};
//
var addNodeToSelection = function(points) {
// var point = points;
if(!$.isArray(points)) points = [points];
for(var i=0; i< points.length; i++) {
var pt = points[i];
if($.inArray(pt, selected_pts) == -1 && pt >= 0) {
selected_pts.push(pt);
}
}
selected_pts.sort();
var i = selected_pts.length,
last_pt = current_path_pts.length/2 - 1,
grips = new Array(i);
// Check if amount of selected nodes are allowed to be deleted
var tot_pts = current_path_pts.length/2 - (is_closed?1:0);
pathActions.canDeleteNodes = (tot_pts - i >= 2);
$('#pathpointgrip_container circle').attr('stroke','#00F');
// Loop through points to be selected and highlight each
while(i--) {
var point = selected_pts[i];
$('#pathpointgrip_' + point).attr('stroke','#0FF');
grips[i] = $('#pathpointgrip_' + point)[0];
$('#ctrlpointgrip_container circle').attr('fill', '#EEE');
$('#ctrlpointgrip_' + point + 'c1, #ctrlpointgrip_' + point + 'c2').attr('fill','#0FF');
$('#segline_' + point).attr('display','inline');
}
if(selected_pts.length <= 1) {//if(current_path_pt == -1) {
current_path_pt = selected_pts[0];
}
updateSegLines();
call("selected", grips);
};
var removeNodeFromSelection = function(point) {
var pos = $.inArray(point, selected_pts);
if(pos == -1) {
return;
} else {
selected_pts.splice(pos, 1);
}
$('#pathpointgrip_' + point).attr('stroke','#00F');
// grips[i] = $('#pathpointgrip_' + point)[0];
$('#ctrlpointgrip_container circle').attr('fill', '#EEE');
$('#ctrlpointgrip_' + point + 'c1, #ctrlpointgrip_' + point + 'c2').attr('fill','#0FF');
$('#segline_' + point).attr('display','none');
current_path_pt = selected_pts[0];
// TODO: Set grips
// call("selected", grips);
};
var removeAllNodesFromSelection = function() {
var i = selected_pts.length;
var last_pt = current_path_pts.length/2 - 1;
$('#pathpointgrip_container circle').attr('stroke','#EEE');
$('#ctrlpointgrip_container circle').attr('fill', '#EEE');
selected_pts = [];
// current_path_pt = -1;
// call("selected", []);
};
var selectNode = function(point) {
removeAllNodesFromSelection();
addNodeToSelection(point);
};
var addAllPointGripsToPath = function(pointToSelect) {
// loop through and show all pointgrips
var len = current_path_pts.length;
for (var i = 0; i < len; i += 2) {
var grip = getElem("pathpointgrip_"+i/2);
// Skip last point if closed
if(!is_closed || i+2 < len) {
if (grip) {
assignAttributes(grip, {
'cx': current_path_pts[i],
'cy': current_path_pts[i+1],
'display': 'inline'
});
}
else {
addPointGripToPath(current_path_pts[i], current_path_pts[i+1],i/2);
}
}
var index = i/2;
var item = current_path.pathSegList.getItem(index);
if(item.pathSegType == 6) {
index -= 1;
// Same code as when making a curve, needs to be in own function
var cur_x = getPathPoint(index)[0];
var cur_y = getPathPoint(index)[1];
var next_x = getPathPoint(index+1)[0];
var next_y = getPathPoint(index+1)[1];
addControlPointGrip(item.x1,item.y1, cur_x,cur_y, index+'c1');
addControlPointGrip(item.x2,item.y2, next_x,next_y, index+'c2');
}
}
// FIXME: we cannot just use the same transform as the path because we might be
// at a different zoom level
var angle = canvas.getRotationAngle(current_path);
if (angle) {
var bbox = canvas.getBBox(current_path);
var cx = (bbox.x + bbox.width/2) * current_zoom,
cy = (bbox.y + bbox.height/2) * current_zoom;
var xform = ["rotate(", angle, " ", cx, ",", cy, ")"].join("");
setPointContainerTransform(xform);
}
if(pointToSelect != null) {
selectNode(pointToSelect);
}
};
var addPointGripToPath = function(x,y,index) {
// create the container of all the point grips
var pointGripContainer = getElem("pathpointgrip_container");
if (!pointGripContainer) {
var parent = getElem("selectorParentGroup");
pointGripContainer = parent.appendChild(document.createElementNS(svgns, "g"));
pointGripContainer.id = "pathpointgrip_container";
}
var pointGrip = getElem("pathpointgrip_"+index);
// create it
if (!pointGrip) {
pointGrip = document.createElementNS(svgns, "circle");
assignAttributes(pointGrip, {
'id': "pathpointgrip_" + index,
'display': "none",
'r': 4,
'fill': "#0FF",
'stroke': "#00F",
'stroke-width': 2,
'cursor': 'move',
'style': 'pointer-events:all',
'xlink:title': uiStrings.pathNodeTooltip
});
pointGrip = pointGripContainer.appendChild(pointGrip);
var grip = $('#pathpointgrip_'+index);
grip.dblclick(function() {
canvas.setSegType();
});
// create segline
segLine = document.createElementNS(svgns, "path");
assignAttributes(segLine, {
'id': "segline_" + index,
'display': 'none',
'fill': "none",
'stroke': "#0FF",
'stroke-width': 2,
'style':'pointer-events:none',
'd': 'M0,0 0,0'
});
segLine = pointGripContainer.appendChild(segLine);
}
// set up the point grip element and display it
assignAttributes(pointGrip, {
'cx': x,
'cy': y,
'display': "inline"
});
};
var updateSegLines = function() {
// create segment lines
var len = current_path_pts.length/2 - (is_closed?1:0);
for(var i=0; i<len; i++) {
var segLine = getElem("segline_"+i);
if(!segLine) continue;
if($.inArray(i, selected_pts) != -1) {
var list = current_path.pathSegList;
if(i+1 >= list.numberOfItems) {
segLine.setAttribute('display','none');
continue;
}
// Point is selected, so calculate and display
replacePathSeg(2, 0, getPathPoint(i, true), segLine);
var seg = list.getItem(i+1);
var points = [seg.x, seg.y];
if(seg.x1 != null && seg.x2 != null) {
points.splice(2, 0, seg.x1, seg.y1, seg.x2, seg.y2);
}
points = $.map(points, function(n){return n*current_zoom;});
replacePathSeg(seg.pathSegType, 1, points, segLine);
segLine.setAttribute('display','inline');
} else {
// Point is not selected, so just hide
segLine.setAttribute('display','none');
}
}
}
var updatePath = function(mouse_x, mouse_y, old_path_pts) {
var x = mouse_x / current_zoom,
y = mouse_y / current_zoom,
i = current_path_pt_drag * 2,
last_index = current_path_pts.length/2 - 1,
is_first = current_path_pt_drag == 0, // || (is_closed && current_path_pt_drag == last_index);
is_last = !is_closed && current_path_pt_drag == last_index;
// if the image is rotated, then we must modify the x,y mouse coordinates
// and rotate them into the shape's rotated coordinate system
// we also re-map mouse_x/y and x/y into the rotated coordinate system
var angle = canvas.getRotationAngle(current_path, true);
if (angle) {
// calculate the shape's old center that was used for rotation
var box = selectedBBoxes[0],
cx = (box.x + box.width/2) * current_zoom,
cy = (box.y + box.height/2) * current_zoom,
dx = mouse_x - cx, dy = mouse_y - cy,
r = Math.sqrt( dx*dx + dy*dy ),
theta = Math.atan2(dy,dx) - angle;
current_path_pts[i] = mouse_x = cx + r * Math.cos(theta);
current_path_pts[i+1] = mouse_y = cy + r * Math.sin(theta);
x = mouse_x / current_zoom;
y = mouse_y / current_zoom;
}
else {
current_path_pts[i] = x * current_zoom;
current_path_pts[i+1] = y * current_zoom;
}
if(is_first && is_closed) {
// Update the first point
current_path_pts[0] = current_path_pts[i];
current_path_pts[1] = current_path_pts[i+1];
current_path_pt_drag = 0;
}
var index = current_path_pt_drag,
abs_x = getPathPoint(index)[0],
abs_y = getPathPoint(index)[1],
item = current_path.pathSegList.getItem(index),
x_diff = x - old_path_pts[index*2],
y_diff = y - old_path_pts[index*2 + 1];
var cur_type = item.pathSegType;
var points = [];
if(cur_type == 6) {
points = [abs_x,abs_y, item.x1,item.y1, item.x2 + x_diff,item.y2 + y_diff];
} else {
if(is_first) {
// Need absolute position for first point
points = getPathPoint(0);
} else {
points = [abs_x, abs_y];
}
}
replacePathSeg(cur_type, index, points);
var setSeg = function(index,first) {
var points, item = current_path.pathSegList.getItem(index);
var type = item.pathSegType;
if(first) {
item.x += x_diff;
item.y += y_diff;
}
switch (type) {
case 1:
points = [];
break;
case 4:
points = [item.x, item.y];
break;
case 6:
if(first) {
item.x1 -= x_diff;
item.y1 -= y_diff;
item.x2 += x_diff;
item.y2 += y_diff;
}
points = [item.x, item.y, item.x1 + x_diff,item.y1 + y_diff, item.x2,item.y2];
break;
default:
break;
}
replacePathSeg(type, index, points);
return type;
}
if(is_closed || !is_last) {
var next_type = setSeg(index+1);
} else {
var next_type = 0;
}
if(is_first && is_closed) {
var last_type = setSeg(last_index,1);
}
// move the point grip
var grip = getElem("pathpointgrip_" + current_path_pt_drag);
if (grip) {
grip.setAttribute("cx", mouse_x);
grip.setAttribute("cy", mouse_y);
call("changed", [grip]);
}
if(is_first) cur_type = last_type;
if(cur_type != 4) {
var num = is_first?last_index:index,
id2 = (num-1)+'c2',
line = getElem("ctrlLine_"+id2);
if(line) {
// Don't do if first point on open path
if(!(!is_closed && current_path_pt_drag == 0)) {
var x2 = line.getAttribute('x2') - 0 + x_diff*current_zoom,
y2 = line.getAttribute('y2') - 0 + y_diff*current_zoom;
addControlPointGrip(x2,y2, mouse_x,mouse_y, id2, true);
}
}
}
if(next_type != 4) {
var id1 = (current_path_pt_drag)+'c1';
var line = getElem("ctrlLine_"+id1);
if(line) {
var x2 = line.getAttribute('x2') - 0 + x_diff*current_zoom,
y2 = line.getAttribute('y2') - 0 + y_diff*current_zoom;
addControlPointGrip(x2,y2, mouse_x,mouse_y, id1, true);
}
}
}
var updateCurvedSegment = function(mouse_x, mouse_y, index, ctrl_num) {
var list = current_path.pathSegList;
if(index+1 >= list.numberOfItems) {
index = -1;
}
var c_item = list.getItem(index+1);
// Only do curves
if(c_item.pathSegType != 6) return;
ctrl_pt_drag = index + 'c' + ctrl_num;
var x = mouse_x / current_zoom,
y = mouse_y / current_zoom;
var angle = canvas.getRotationAngle(current_path, true);
// TODO: Make sure this works for linked control points
if (angle) {
// calculate the shape's old center that was used for rotation
var box = selectedBBoxes[0],
cx = (box.x + box.width/2) * current_zoom,
cy = (box.y + box.height/2) * current_zoom,
dx = mouse_x - cx, dy = mouse_y - cy,
r = Math.sqrt( dx*dx + dy*dy ),
theta = Math.atan2(dy,dx) - angle;
mouse_x = cx + r * Math.cos(theta);
mouse_y = cy + r * Math.sin(theta);
x = mouse_x / current_zoom;
y = mouse_y / current_zoom;
}
c_item['x' + ctrl_num] = x;
c_item['y' + ctrl_num] = y;
replacePathSeg(6, index+1, [c_item.x,c_item.y, c_item.x1,c_item.y1, c_item.x2,c_item.y2]);
updateSegLines();
var grip = getElem("ctrlpointgrip_" + ctrl_pt_drag);
if(grip) {
grip.setAttribute("cx", mouse_x);
grip.setAttribute("cy", mouse_y);
var line = getElem("ctrlLine_"+ctrl_pt_drag);
line.setAttribute("x2", mouse_x);
line.setAttribute("y2", mouse_y);
}
}
var getPathPoint = function(index, raw_val) {
var len = current_path_pts.length;
var pt_num = len/2;
if(index < 0) {
index += pt_num;
} else if(index >= pt_num) {
index -= pt_num;
}
var z = raw_val?1:current_zoom;
return [current_path_pts[index*2] / z, current_path_pts[index*2 + 1] / z];
}
// This replaces the segment at the given index. Type is given as number.
var replacePathSeg = function(type, index, pts, path) {
if(!path) path = current_path;
var func = 'createSVGPathSeg' + pathFuncs[type];
var seg = path[func].apply(path, pts);
if(support.pathReplaceItem) {
path.pathSegList.replaceItem(seg, index);
} else {
var segList = path.pathSegList;
var len = segList.numberOfItems;
var arr = [];
for(var i=0; i<len; i++) {
var cur_seg = segList.getItem(i);
arr.push(cur_seg)
}
segList.clear();
for(var i=0; i<len; i++) {
if(i == index) {
segList.appendItem(seg);
} else {
segList.appendItem(arr[i]);
}
}
}
}
var addControlPointGrip = function(x, y, source_x, source_y, id, raw_val) {
if(!raw_val) {
x *= current_zoom; y *= current_zoom;
source_x *= current_zoom; source_y *= current_zoom;
}
// create the container of all the control point grips
var ctrlPointGripContainer = getElem("ctrlpointgrip_container");
if (!ctrlPointGripContainer) {
var parent = getElem("selectorParentGroup");
ctrlPointGripContainer = parent.appendChild(document.createElementNS(svgns, "g"));
ctrlPointGripContainer.id = "ctrlpointgrip_container";
}
ctrlPointGripContainer.setAttribute("display", "inline");
var ctrlLine = getElem("ctrlLine_"+id);
if (!ctrlLine) {
ctrlLine = document.createElementNS(svgns, "line");
assignAttributes(ctrlLine, {
'id': "ctrlLine_"+id,
'stroke': "#555",
'stroke-width': 1,
"style": "pointer-events:none"
});
ctrlLine = ctrlPointGripContainer.appendChild(ctrlLine);
}
assignAttributes(ctrlLine, {
'x1': source_x,
'y1': source_y,
'x2': x,
'y2': y,
'display': "inline"
});
var pointGrip = getElem("ctrlpointgrip_"+id);
// create it
if (!pointGrip) {
pointGrip = document.createElementNS(svgns, "circle");
assignAttributes(pointGrip, {
'id': "ctrlpointgrip_" + id,
'display': "none",
'r': 4,
'fill': "#0FF",
'stroke': "#55F",
'stroke-width': 1,
'cursor': 'move',
'style': 'pointer-events:all',
'xlink:title': uiStrings.pathCtrlPtTooltip
});
pointGrip = ctrlPointGripContainer.appendChild(pointGrip);
}
assignAttributes(pointGrip, {
'cx': x,
'cy': y,
'display': "inline"
});
}
var removeControlPointGrips = function(index) {
for(var i=1; i <= 2; i++) {
$("#ctrlpointgrip_" + index + "c" + i + ",#ctrlLine_" + index + "c" + i).attr("display", "none");
}
}
// If the path was rotated, we must now pay the piper:
// Every path point must be rotated into the rotated coordinate system of
// its old center, then determine the new center, then rotate it back
// This is because we want the path to remember its rotation
// TODO: This is still using ye olde transform methods, can probably
// be optimized or even taken care of by recalculateDimensions
var recalcRotatedPath = function() {
var angle = canvas.getRotationAngle(current_path, true);
if(!angle) return;
var box = canvas.getBBox(current_path),
oldbox = selectedBBoxes[0],
oldcx = oldbox.x + oldbox.width/2,
oldcy = oldbox.y + oldbox.height/2,
newcx = box.x + box.width/2,
newcy = box.y + box.height/2,
// un-rotate the new center to the proper position
dx = newcx - oldcx,
dy = newcy - oldcy,
r = Math.sqrt(dx*dx + dy*dy),
theta = Math.atan2(dy,dx) + angle;
newcx = r * Math.cos(theta) + oldcx;
newcy = r * Math.sin(theta) + oldcy;
var getRotVals = function(x, y) {
dx = x - oldcx;
dy = y - oldcy;
// rotate the point around the old center
r = Math.sqrt(dx*dx + dy*dy);
theta = Math.atan2(dy,dx) + angle;
dx = r * Math.cos(theta) + oldcx;
dy = r * Math.sin(theta) + oldcy;
// dx,dy should now hold the actual coordinates of each
// point after being rotated
// now we want to rotate them around the new center in the reverse direction
dx -= newcx;
dy -= newcy;
r = Math.sqrt(dx*dx + dy*dy);
theta = Math.atan2(dy,dx) - angle;
return {'x':(r * Math.cos(theta) + newcx)/1,
'y':(r * Math.sin(theta) + newcy)/1};
}
var list = current_path.pathSegList,
i = list.numberOfItems;
while (i) {
i -= 1;
var seg = list.getItem(i),
type = seg.pathSegType;
if(type == 1) continue;
var rvals = getRotVals(seg.x,seg.y),
points = [rvals.x, rvals.y];
if(seg.x1 != null && seg.x2 != null) {
c_vals1 = getRotVals(seg.x1, seg.y1);
c_vals2 = getRotVals(seg.x2, seg.y2);
points.splice(points.length, 0, c_vals1.x , c_vals1.y, c_vals2.x, c_vals2.y);
}
replacePathSeg(type, i, points);
} // loop for each point
box = canvas.getBBox(current_path);
selectedBBoxes[0].x = box.x; selectedBBoxes[0].y = box.y;
selectedBBoxes[0].width = box.width; selectedBBoxes[0].height = box.height;
// now we must set the new transform to be rotated around the new center
var R_nc = svgroot.createSVGTransform(),
tlist = canvas.getTransformList(current_path);
R_nc.setRotate((angle * 180.0 / Math.PI), newcx, newcy);
tlist.replaceItem(R_nc,0);
if(getElem("pathpointgrip_container")) {
var pcx = newcx * current_zoom,
pcy = newcy * current_zoom;
var xform = ["rotate(", (angle*180.0/Math.PI), " ", pcx, ",", pcy, ")"].join("");
setPointContainerTransform(xform);
}
resetPointGrips();
updateSegLines();
}
return {
init: function() {
pathFuncs = [0,'ClosePath'];
var pathFuncsStrs = ['Moveto','Lineto','CurvetoCubic','CurvetoQuadratic','Arc','LinetoHorizontal','LinetoVertical','CurvetoCubicSmooth','CurvetoQuadraticSmooth'];
$.each(pathFuncsStrs,function(i,s){pathFuncs.push(s+'Abs');pathFuncs.push(s+'Rel');});
},
mouseDown: function(evt, mouse_target, start_x, start_y) {
if(current_mode == "path") {
setPointContainerTransform("");
return;
}
// TODO: Make sure current_path isn't null at this point
if(!current_path) return;
current_path_oldd = getD();
var id = evt.target.id;
if (id.substr(0,14) == "pathpointgrip_") {
// Select this point
current_path_pt = current_path_pt_drag = parseInt(id.substr(14));
// only clear selection if shift is not pressed (otherwise, add
// node to selection)
if (!evt.shiftKey) {
if(selected_pts.length <= 1 || $.inArray(current_path_pt, selected_pts) == -1) {
removeAllNodesFromSelection();
}
addNodeToSelection(current_path_pt);
} else if($.inArray(current_path_pt, selected_pts) != -1) {
removeNodeFromSelection(current_path_pt);
} else {
addNodeToSelection(current_path_pt);
}
} else if(id.indexOf("ctrlpointgrip_") == 0) {
current_ctrl_pt_drag = id.split('_')[1];
var node_num = current_ctrl_pt_drag.split('c')[0]-0;
selectNode(node_num);
}
if(current_path_pt_drag == -1 && current_ctrl_pt_drag == -1) {
// start_x = x;
// start_y = y;
if (rubberBox == null) {
rubberBox = selectorManager.getRubberBandBox();
}
assignAttributes(rubberBox, {
'x': start_x * current_zoom,
'y': start_y * current_zoom,
'width': 0,
'height': 0,
'display': 'inline'
}, 100);
}
},
mouseMove: function(mouse_x, mouse_y) {
hasMoved = true;
if(current_mode == "path") {
var line = getElem("path_stretch_line");
if (line) {
line.setAttribute("x2", mouse_x);
line.setAttribute("y2", mouse_y);
}
return;
}
// if we are dragging a point, let's move it
if (current_path_pt_drag != -1 && current_path) {
var old_path_pts = $.map(current_path_pts, function(n){return n/current_zoom;});
var diff_x = mouse_x - current_path_pts[current_path_pt*2];
var diff_y = mouse_y - current_path_pts[current_path_pt*2+1];
var rot = !!canvas.getRotationAngle(current_path);
if(rot) {
var m = canvas.getTransformList(current_path).getItem(0).matrix;
}
for(var i=0; i<selected_pts.length; i++) {
var sel_pt = selected_pts[i];
var sel_pt_x = current_path_pts[sel_pt*2] + diff_x;
var sel_pt_y = current_path_pts[sel_pt*2+1] + diff_y;
if(rot) {
// var pt = transformPoint(current_path_pts[sel_pt*2], current_path_pts[sel_pt*2+1], m);
// var dpt = transformPoint(diff_x, diff_y, m);
// sel_pt_x = pt.x + dpt.x;
// sel_pt_y = pt.y + dpt.y;
}
current_path_pt_drag = sel_pt;
updatePath(sel_pt_x, sel_pt_y, old_path_pts);
}
} else if (current_ctrl_pt_drag != -1 && current_path) {
// Moving the control point. Since only one segment is altered,
// we only need to do a pathSegList replace.
var data = current_ctrl_pt_drag.split('c'),
index = data[0]-0,
ctrl_num = data[1]-0,
pt_index,
pt_count = current_path_pts.length/2;
updateCurvedSegment(mouse_x, mouse_y, index, ctrl_num);
if(link_control_pts) {
if(ctrl_num == 1) {
ctrl_num = 2;
index--;
pt_index = index+1;
if(index < 0) {
index = pt_count - 2;
if(!is_closed) return;
}
} else {
ctrl_num = 1;
index++;
pt_index = index;
if(index >= pt_count - 1) {
index = 0;
if(!is_closed) return;
}
}
var pt = getPathPoint(pt_index, true),
new_x = pt[0] - (mouse_x - pt[0]),
new_y = pt[1] - (mouse_y - pt[1]);
updateCurvedSegment(new_x, new_y, index, ctrl_num, true);
}
} else {
var len = current_path_pts.length,
sel_pts = [];
selected_pts = [];
var rot = !!canvas.getRotationAngle(current_path);
if(rot) {
var tlist = canvas.getTransformList(current_path),
m = transformListToTransform(tlist).matrix;
}
if(is_closed) len -= 2;
for(var i=0; i<len; i+=2) {
var x = current_path_pts[i],
y = current_path_pts[i+1],
rbb = rubberBox.getBBox();
if(rot) {
var pt = transformPoint(x, y, m);
x = pt.x;
y = pt.y;
}
var pt_bb = {
x: x,
y: y,
width: 0,
height: 0
};
if (Utils.rectsIntersect(rbb, pt_bb)) {
sel_pts.push(i/2);
}
}
removeAllNodesFromSelection();
selectNode(sel_pts);
}
updateSegLines();
},
mouseUp: function(evt, element, mouse_x, mouse_y) {
var tempJustSelected = justSelected;
justSelected = null;
// Create mode
if(current_mode == "path") {
var x = mouse_x/current_zoom,
y = mouse_y/current_zoom,
stretchy = getElem("path_stretch_line");
if (!stretchy) {
stretchy = document.createElementNS(svgns, "line");
assignAttributes(stretchy, {
'id': "path_stretch_line",
'stroke': "#22C",
'stroke-width': "0.5"
});
stretchy = getElem("selectorParentGroup").appendChild(stretchy);
}
stretchy.setAttribute("display", "inline");
var keep = null;
// if pts array is empty, create path element with M at current point
if (current_path_pts.length == 0) {
current_path_pts.push(x);
current_path_pts.push(y);
d_attr = "M" + x + "," + y + " ";
addSvgElementFromJson({
"element": "path",
"attr": {
"d": d_attr,
"id": getNextId(),
"fill": cur_shape.fill,
"fill-opacity": cur_shape.fill_opacity,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"opacity": cur_shape.opacity / 2,
"style": "pointer-events:inherit"
}
});
// set stretchy line to first point
assignAttributes(stretchy, {
'x1': mouse_x,
'y1': mouse_y,
'x2': mouse_x,
'y2': mouse_y
});
addPointGripToPath(mouse_x,mouse_y,0);
}
else {
// determine if we clicked on an existing point
var i = current_path_pts.length;
var FUZZ = 6/current_zoom;
var clickOnPoint = false;
while(i) {
i -= 2;
var px = current_path_pts[i], py = current_path_pts[i+1];
// found a matching point
if ( x >= (px-FUZZ) && x <= (px+FUZZ) && y >= (py-FUZZ) && y <= (py+FUZZ) ) {
clickOnPoint = true;
break;
}
}
// get path element that we are in the process of creating
var path = getElem(getId());
var len = current_path_pts.length;
// if we clicked on an existing point, then we are done this path, commit it
// (i,i+1) are the x,y that were clicked on
if (clickOnPoint) {
// if clicked on any other point but the first OR
// the first point was clicked on and there are less than 3 points
// then leave the path open
// otherwise, close the path
if (i == 0 && len >= 6) {
// Create end segment
var abs_x = current_path_pts[0];
var abs_y = current_path_pts[1];
d_attr += ['L',abs_x,',',abs_y,'z'].join('');
path.setAttribute("d", d_attr);
} else if(len < 3) {
keep = false;
return keep;
}
removeAllPointGripsFromPath();
// this will signal to commit the path
element = path;
current_path_pts = [];
started = false;
}
// else, create a new point, append to pts array, update path element
else {
// Checks if current target or parents are #svgcontent
if(!$.contains(container, evt.target)) {
// Clicked outside canvas, so don't make point
return false;
}
var lastx = current_path_pts[len-2], lasty = current_path_pts[len-1];
// we store absolute values in our path points array for easy checking above
current_path_pts.push(x);
current_path_pts.push(y);
d_attr += "L" + round(x) + "," + round(y) + " ";
path.setAttribute("d", d_attr);
// set stretchy line to latest point
assignAttributes(stretchy, {
'x1': mouse_x,
'y1': mouse_y,
'x2': mouse_x,
'y2': mouse_y
});
addPointGripToPath(mouse_x,mouse_y,(current_path_pts.length/2 - 1));
}
keep = true;
}
return {
keep: keep,
element: element
}
}
// Edit mode
if (current_path_pt_drag != -1) {
var last_pt = current_path_pt_drag;
current_path_pt_drag = -1;
recalcRotatedPath();
if(hasMoved) {
endChanges(current_path_oldd, "Move path point(s)");
}
// If connected, last point should equal first
if(is_closed) {
current_path_pts[current_path_pts.length-2] = getPathPoint(0,true)[0];
current_path_pts[current_path_pts.length-1] = getPathPoint(0,true)[1];
}
if(evt.shiftKey) {
if(tempJustSelected != current_path_pt) {
removeNodeFromSelection();
}
// if($.inArray(last_pt, selected_pts) != -1) {
// removeNodeFromSelection(last_pt)
// } else {
// addNodeToSelection(last_pt)
// }
} else if(!hasMoved) {
selectNode(last_pt);
}
// make these changes undo-able
} // if (current_path_pt_drag != -1)
else if(current_ctrl_pt_drag != -1) {
current_ctrl_pt_drag = -1;
recalcRotatedPath();
endChanges(current_path_oldd, "Edit Path control point(s)");
}
else if(rubberBox && rubberBox.getAttribute('display') != 'none') {
// Done with multi-node-select
rubberBox.setAttribute("display", "none");
if(rubberBox.getAttribute('width') <= 2 && rubberBox.getAttribute('height') <= 2) {
pathActions.toSelectMode(evt.target);
}
// else, move back to select mode
} else {
pathActions.toSelectMode(evt.target);
}
hasMoved = false;
},
toEditMode: function(element) {
current_path = element;
is_closed = getD().substr(-1,1).toLowerCase() == 'z';
current_mode = "pathedit";
// This resets the pathedit selection in case it
// was a rotate that turned into a matrix
var angle = canvas.getRotationAngle(element);
if(!angle) setPointContainerTransform();
// recalculate current_path_pts
recalcPathPoints();
canvas.clearSelection();
// save the path's bbox
selectedBBoxes[0] = canvas.getBBox(current_path);
addAllPointGripsToPath();
selectNode(0);
// addAllPointGripsToPath(current_path_pts.length/2 - 1);
},
toSelectMode: function(elem) {
var selPath = (elem == current_path);
current_mode = "select";
removeAllPointGripsFromPath();
canvas.clearSelection();
pathActions.clear();
if(selPath) {
call("selected", [elem]);
canvas.addToSelection([elem], true);
}
},
select: function(target) {
if (current_path == target) {
pathActions.toEditMode(current_path);
current_mode = "pathedit";
} // going into pathedit mode
else {
current_path = target;
}
},
reorient: function() {
var elem = selectedElements[0];
if(!elem) return;
var angle = canvas.getRotationAngle(elem);
if(angle == 0) return;
var batchCmd = new BatchCommand("Reorient path");
var changes = {
d: elem.getAttribute('d'),
transform: elem.getAttribute('transform')
};
batchCmd.addSubCommand(new ChangeElementCommand(elem, changes));
canvas.clearSelection();
this.resetOrientation(elem);
addCommandToHistory(batchCmd);
current_path = elem;
setPointContainerTransform(""); // Maybe this should be in resetPointGrips?
resetPointGrips();
this.clear();
canvas.addToSelection([elem], true);
call("changed", selectedElements);
},
clear: function(remove) {
if(remove && current_mode == "path") {
var elem = getElem(getId());
if(elem) elem.parentNode.removeChild(elem);
}
removeAllPointGripsFromPath();
current_path_pts = [];
current_path_pt = -1;
current_path = null;
},
resetOrientation: function(path) {
if(path == null || path.nodeName != 'path') return false;
var tlist = canvas.getTransformList(path);
var m = transformListToTransform(tlist).matrix;
tlist.clear();
path.removeAttribute("transform");
var segList = path.pathSegList;
// Opera/win/non-EN throws an error here.
// TODO: Find out why!
try {
var len = segList.numberOfItems;
} catch(err) {
var fixed_d = pathActions.convertPath(path);
path.setAttribute('d', fixed_d);
segList = path.pathSegList;
var len = segList.numberOfItems;
}
for (var i = 0; i < len; ++i) {
var seg = segList.getItem(i);
var type = seg.pathSegType;
if(type == 1) continue;
var pts = [];
$.each(['',1,2], function(j, n) {
var x = seg['x'+n], y = seg['y'+n];
if(x && y) {
var pt = transformPoint(x, y, m);
pts.splice(pts.length, 0, pt.x, pt.y);
}
});
replacePathSeg(type, i, pts, path);
}
},
zoomChange: function() {
if(current_mode == "pathedit") {
resetPointGrips();
updateSegLines();
}
},
modeChange: function() {
// toss out half-drawn path
if (current_mode == "path" && current_path_pts.length > 0) {
var elem = getElem(getId());
elem.parentNode.removeChild(elem);
this.clear();
canvas.clearSelection();
started = false;
}
else if (current_mode == "pathedit") {
this.clear();
}
},
getNodePoint: function() {
var sel_pt = selected_pts.length ? selected_pts[0] : 0;
var pt = getPathPoint(sel_pt);
var list = current_path.pathSegList;
var segtype;
if(list.numberOfItems > sel_pt+1) {
segtype = list.getItem(sel_pt+1).pathSegType;
} else {
segtype = false;
}
return {
x: pt[0],
y: pt[1],
type: segtype
}
},
linkControlPoints: function(linkPoints) {
link_control_pts = linkPoints;
},
clonePathNode: function() {
var d = getD();
var i = selected_pts.length,
nums = [];
while(i--) {
var pt = selected_pts[i], list = current_path.pathSegList;
if(pt+1 >= list.numberOfItems) {
pt--;
}
var next_item = list.getItem(pt+1);
// Get point in between nodes
if(next_item.pathSegType % 2 == 0) { // even num, so abs
var cur_item = list.getItem(pt);
var new_x = (next_item.x + cur_item.x) / 2;
var new_y = (next_item.y + cur_item.y) / 2;
} else {
var new_x = next_item.x/2;
var new_y = next_item.y/2;
}
var seg = current_path.createSVGPathSegLinetoAbs(new_x, new_y);
if(support.pathInsertItemBefore) {
list.insertItemBefore(seg, pt+1);
} else {
var segList = current_path.pathSegList;
var len = segList.numberOfItems;
var arr = [];
for(var i=0; i<len; i++) {
var cur_seg = segList.getItem(i);
arr.push(cur_seg)
}
segList.clear();
for(var i=0; i<len; i++) {
if(i == pt+1) {
segList.appendItem(seg);
}
segList.appendItem(arr[i]);
}
}
var abs_x = (getPathPoint(pt)[0] + new_x) * current_zoom;
var abs_y = (getPathPoint(pt)[1] + new_y) * current_zoom;
var last_num = current_path_pts.length/2;
// Add new grip
addPointGripToPath(abs_x, abs_y, last_num);
// Update path_pts
current_path_pts.splice(pt*2 + 2, 0, abs_x, abs_y);
// TODO: This should select the new path points but breaks
// when doing several times seleting many nodes
nums.push(pt + i);
nums.push(pt + i + 1);
}
resetPointGrips();
removeAllNodesFromSelection();
addNodeToSelection(nums);
endChanges(d, "Clone path node(s)");
// current_path.setAttribute("d", convertToD(current_path.pathSegList));
},
deletePathNode: function() {
if(!pathActions.canDeleteNodes) return;
var len = selected_pts.length;
var d = getD();
while(len--) {
var pt = selected_pts[len];
var last_pt = current_path_pts.length/2 - 1;
var list = current_path.pathSegList;
var cur_item = list.getItem(pt);
if(pt == 0) {
var next_x = getPathPoint(1)[0];
var next_y = getPathPoint(1)[1];
// Make the next point be the "M" point
replacePathSeg(2, 1, [next_x, next_y]);
// Reposition last node
if(is_closed) {
var last_item = list.getItem(last_pt);
replacePathSeg(4, last_pt, [next_x, next_y]);
removeControlPointGrips(last_pt - 1);
current_path_pts.splice(last_pt*2, 2, next_x, next_y);
current_path_pts.splice(0, 2);
}
} else {
current_path_pts.splice(pt*2, 2);
}
removeNodeFromSelection(pt);
list.removeItem(pt);
}
resetPointGrips();
if(window.opera) { // Opera repaints incorrectly
var cp = $(current_path); cp.attr('d',cp.attr('d'));
}
if(pt == last_pt - (is_closed?1:0)) {
pt--;
}
selectNode(pt);
endChanges(d, "Delete path node(s)");
},
setPointContainerTransform: setPointContainerTransform,
smoothPolylineIntoPath: smoothPolylineIntoPath,
setSegType: function(new_type) {
var old_d = getD();
var i = selected_pts.length;
while(i--) {
var sel_pt = selected_pts[i];
var grip = $('#pathpointgrip_' + sel_pt);
var index = grip[0].id.split('_')[1] - 0;
var last_index = current_path_pts.length/2 - 1;
if(!is_closed && index == last_index) {
return; // Last point of unclosed path should do nothing
} else if(index >= last_index && is_closed) {
index = 0;
}
var next_index = index+1;
var cur_x = getPathPoint(index)[0];
var cur_y = getPathPoint(index)[1];
var next_x = getPathPoint(next_index)[0];
var next_y = getPathPoint(next_index)[1];
if(!new_type) { // double-click, so just toggle
var text = "Toggle Path Segment Type";
// Toggle segment to curve/straight line
var old_type = current_path.pathSegList.getItem(index+1).pathSegType;
new_type = (old_type == 6) ? 4 : 6;
} else {
new_type -= 0;
var text = "Change Path Segment Type";
}
var points;
var bb = current_path.getBBox();
var oldseg = current_path.pathSegList.getItem(next_index);
switch ( new_type ) {
case 6:
var diff_x = next_x - cur_x;
var diff_y = next_y - cur_y;
// get control points from straight line segment
var ct1_x = oldseg.c1_x || (cur_x + (diff_y/2));
var ct1_y = oldseg.c1_y || (cur_y - (diff_x/2));
var ct2_x = oldseg.c2_x || (next_x + (diff_y/2));
var ct2_y = oldseg.c2_y || (next_y - (diff_x/2));
points = [next_x,next_y, ct1_x,ct1_y, ct2_x,ct2_y];
break;
case 4:
points = [next_x,next_y];
removeControlPointGrips(index);
break;
}
replacePathSeg(new_type, next_index, points);
// if we changed to a straight line, store the old control points
var newseg = current_path.pathSegList.getItem(next_index);
if (newseg.pathSegType == 4 && oldseg.pathSegType == 6) {
newseg.c1_x = oldseg.x1;
newseg.c1_y = oldseg.y1;
newseg.c2_x = oldseg.x2;
newseg.c2_y = oldseg.y2;
}
}
addAllPointGripsToPath();
// recalculateDimensions(current_path);
updateSegLines();
recalcRotatedPath();
endChanges(old_d, text);
},
moveNode: function(attr, newValue) {
newValue *= current_zoom;
var num = (attr == 'x')?0:1;
var old_path_pts = $.map(current_path_pts, function(n){return n/current_zoom;});
var d = getD();
current_path_pts[current_path_pt*2 + num] = newValue-0;
current_path_pt_drag = current_path_pt;
updatePath(current_path_pts[current_path_pt*2], current_path_pts[current_path_pt*2 + 1], old_path_pts);
updateSegLines();
endChanges(d, "Move path point");
},
// Convert a path to one with only absolute or relative values
convertPath: function(path, toRel) {
var segList = path.pathSegList;
var len = segList.numberOfItems;
var curx = 0, cury = 0;
var d = "";
for (var i = 0; i < len; ++i) {
var seg = segList.getItem(i);
// if these properties are not in the segment, set them to zero
var x = seg.x || 0,
y = seg.y || 0,
x1 = seg.x1 || 0,
y1 = seg.y1 || 0,
x2 = seg.x2 || 0,
y2 = seg.y2 || 0;
var type = seg.pathSegType;
var letter = pathMap[type]['to'+(toRel?'Lower':'Upper')+'Case']();
var addToD = function(pnts, more, last) {
var str = '';
var more = more?' '+more.join(' '):'';
var last = last?shortFloat(last):'';
$.each(pnts, function(i, pnt) {
pnts[i] = shortFloat(pnt);
});
d += letter + pnts.join(' ') + more + last;
}
switch (type) {
case 1: // z,Z closepath (Z/z)
d += "z";
break;
case 12: // absolute horizontal line (H)
x -= curx;
case 13: // relative horizontal line (h)
if(toRel) {
curx += x;
} else {
x += curx;
curx = x;
}
addToD([[x]]);
break;
case 14: // absolute vertical line (V)
y -= cury;
case 15: // relative vertical line (v)
if(toRel) {
cury += y;
} else {
y += cury;
cury = y;
}
addToD([[y]]);
break;
case 2: // absolute move (M)
case 4: // absolute line (L)
case 18: // absolute smooth quad (T)
x -= curx;
y -= cury;
case 3: // relative move (m)
case 5: // relative line (l)
case 19: // relative smooth quad (t)
if(toRel) {
curx += x;
cury += y;
} else {
x += curx;
y += cury;
curx = x;
cury = y;
}
addToD([[x,y]]);
break;
case 6: // absolute cubic (C)
x -= curx; x1 -= curx; x2 -= curx;
y -= cury; y1 -= cury; y2 -= cury;
case 7: // relative cubic (c)
if(toRel) {
curx += x;
cury += y;
} else {
x += curx; x1 += curx; x2 += curx;
y += cury; y1 += cury; y2 += cury;
curx = x;
cury = y;
}
addToD([[x1,y1],[x2,y2],[x,y]]);
break;
case 8: // absolute quad (Q)
x -= curx; x1 -= curx;
y -= cury; y1 -= cury;
case 9: // relative quad (q)
if(toRel) {
curx += x;
cury += y;
} else {
x += curx; x1 += curx;
y += cury; y1 += cury;
curx = x;
cury = y;
}
addToD([[x1,y1],[x,y]]);
break;
case 10: // absolute elliptical arc (A)
x -= curx;
y -= cury;
case 11: // relative elliptical arc (a)
if(toRel) {
curx += x;
cury += y;
} else {
x += curx;
y += cury;
curx = x;
cury = y;
}
addToD([[seg.r1,seg.r2]], [
seg.angle,
(seg.largeArcFlag ? 1 : 0),
(seg.sweepFlag ? 1 : 0)
],[x,y]
);
break;
case 16: // absolute smooth cubic (S)
x -= curx; x2 -= curx;
y -= cury; y2 -= cury;
case 17: // relative smooth cubic (s)
if(toRel) {
curx += x;
cury += y;
} else {
x += curx; x2 += curx;
y += cury; y2 += cury;
curx = x;
cury = y;
}
addToD([[x2,y2],[x,y]]);
break;
} // switch on path segment type
} // for each segment
return d;
}
}
}();
pathActions.init();
this.pathActions = pathActions;
var shortFloat = function(val) {
var digits = save_options.round_digits;
if(!isNaN(val)) {
return Number(Number(val).toFixed(digits));
} else if($.isArray(val)) {
return shortFloat(val[0]) + ',' + shortFloat(val[1]);
}
}
// Convert an element to a path
this.convertToPath = function(elem, getBBox, angle) {
if(elem == null) {
var elems = selectedElements;
$.each(selectedElements, function(i, elem) {
if(elem) canvas.convertToPath(elem);
});
return;
}
if(!getBBox) {
var batchCmd = new BatchCommand("Convert element to Path");
}
var attrs = getBBox?{}:{
"fill": cur_shape.fill,
"fill-opacity": cur_shape.fill_opacity,
"stroke": cur_shape.stroke,
"stroke-width": cur_shape.stroke_width,
"stroke-dasharray": cur_shape.stroke_style,
"stroke-opacity": cur_shape.stroke_opacity,
"opacity": cur_shape.opacity,
"visibility":"hidden"
};
var path = addSvgElementFromJson({
"element": "path",
"attr": attrs
});
var eltrans = elem.getAttribute("transform");
if(eltrans) {
path.setAttribute("transform",eltrans);
}
var id = elem.id;
var parent = elem.parentNode;
if(elem.nextSibling) {
parent.insertBefore(path, elem);
} else {
parent.appendChild(path);
}
var d = '';
var joinSegs = function(segs) {
$.each(segs, function(j, seg) {
var l = seg[0], pts = seg[1];
d += l;
for(var i=0; i < pts.length; i+=2) {
d += (pts[i] +','+pts[i+1]) + ' ';
}
});
}
// Possibly the cubed root of 6, but 1.81 works best
var num = 1.81;
switch (elem.tagName) {
case 'ellipse':
case 'circle':
var a = $(elem).attr(['rx', 'ry', 'cx', 'cy']);
var cx = a.cx, cy = a.cy, rx = a.rx, ry = a.ry;
if(elem.tagName == 'circle') {
rx = ry = $(elem).attr('r');
}
joinSegs([
['M',[(cx-rx),(cy)]],
['C',[(cx-rx),(cy-ry/num), (cx-rx/num),(cy-ry), (cx),(cy-ry)]],
['C',[(cx+rx/num),(cy-ry), (cx+rx),(cy-ry/num), (cx+rx),(cy)]],
['C',[(cx+rx),(cy+ry/num), (cx+rx/num),(cy+ry), (cx),(cy+ry)]],
['C',[(cx-rx/num),(cy+ry), (cx-rx),(cy+ry/num), (cx-rx),(cy)]],
['Z',[]]
]);
break;
case 'path':
d = elem.getAttribute('d');
break;
case 'line':
var a = $(elem).attr(["x1", "y1", "x2", "y2"]);
d = "M"+a.x1+","+a.y1+"L"+a.x2+","+a.y2;
break;
case 'polyline':
case 'polygon':
d = "M" + elem.getAttribute('points');
break;
case 'rect':
var r = $(elem).attr(['rx', 'ry']);
var rx = r.rx, ry = r.ry;
var b = elem.getBBox();
var x = b.x, y = b.y, w = b.width, h = b.height;
var num = 4-num; // Why? Because!
if(!rx && !ry) {
// Regular rect
joinSegs([
['M',[x, y]],
['L',[x+w, y]],
['L',[x+w, y+h]],
['L',[x, y+h]],
['L',[x, y]],
['Z',[]]
]);
} else {
joinSegs([
['M',[x, y+ry]],
['C',[x,y+ry/num, x+rx/num,y, x+rx,y]],
['L',[x+w-rx, y]],
['C',[x+w-rx/num,y, x+w,y+ry/num, x+w,y+ry]],
['L',[x+w, y+h-ry]],
['C',[x+w, y+h-ry/num, x+w-rx/num,y+h, x+w-rx,y+h]],
['L',[x+rx, y+h]],
['C',[x+rx/num, y+h, x,y+h-ry/num, x,y+h-ry]],
['L',[x, y+ry]],
['Z',[]]
]);
}
break;
default:
path.parentNode.removeChild(path);
break;
}
if(d) {
path.setAttribute('d',d);
}
if(!getBBox) {
// Replace the current element with the converted one
// Reorient if it has a matrix
if(eltrans) {
var tlist = canvas.getTransformList(path);
if(hasMatrixTransform(tlist)) {
pathActions.resetOrientation(path);
}
}
batchCmd.addSubCommand(new RemoveElementCommand(elem, parent));
batchCmd.addSubCommand(new InsertElementCommand(path));
canvas.clearSelection();
elem.parentNode.removeChild(elem)
path.setAttribute('id', id);
path.removeAttribute("visibility");
canvas.addToSelection([path], true);
addCommandToHistory(batchCmd);
} else {
// Get the correct BBox of the new path, then discard it
pathActions.resetOrientation(path);
var bb = false;
try {
bb = path.getBBox();
} catch(e) {
// Firefox fails
}
path.parentNode.removeChild(path);
return bb;
}
}
// - in create mode, the element's opacity is set properly, we create an InsertElementCommand
// and store it on the Undo stack
// - in move/resize mode, the element's attributes which were affected by the move/resize are
// identified, a ChangeElementCommand is created and stored on the stack for those attrs
// this is done in when we recalculate the selected dimensions()
// public functions
// Group: Serialization
this.open = function() {
// Nothing by default, handled by optional widget/extension
};
// Function: save
// Serializes the current drawing into SVG XML text and returns it to the 'saved' handler.
// This function also includes the XML prolog. Clients of the SvgCanvas bind their save
// function to the 'saved' event.
//
// Returns:
// Nothing
this.save = function(opts) {
// remove the selected outline before serializing
this.clearSelection();
// Update save options if provided
if(opts) $.extend(save_options, opts);
save_options.apply = true;
// no need for doctype, see http://jwatt.org/svg/authoring/#doctype-declaration
var str = svgCanvasToString();
call("saved", str);
};
var walkTree = function(elem, cbFn){
if (elem && elem.nodeType == 1) {
cbFn(elem);
var i = elem.childNodes.length;
while (i--) {
walkTree(elem.childNodes.item(i), cbFn);
}
}
};
// Function: getSvgString
// Returns the current drawing as raw SVG XML text.
//
// Returns:
// The current drawing as raw SVG XML text.
this.getSvgString = function() {
save_options.apply = false;
return svgCanvasToString();
};
// Function: getForeignString(elt)
// Returns the contents of element elt as XML text.
//
// Parameters:
// elt - The foreignObject Element.
//
// Returns:
// The contents of elt as raw XML text.
this.getForeignString = function(elt) {
var s = svgToString(elt, 0);
return s;
};
// Function: setSvgString
// This function sets the current drawing as the input SVG XML.
//
// Parameters:
// xmlString - The SVG as XML text.
//
// Returns:
// This function returns false if the set was unsuccessful, true otherwise.
this.setSvgString = function(xmlString) {
try {
// convert string into XML document
var newDoc = Utils.text2xml(xmlString);
// run it through our sanitizer to remove anything we do not support
sanitizeSvg(newDoc.documentElement);
var batchCmd = new BatchCommand("Change Source");
// remove old svg document
var oldzoom = svgroot.removeChild(svgcontent);
batchCmd.addSubCommand(new RemoveElementCommand(oldzoom, svgroot));
// set new svg document
svgcontent = svgroot.appendChild(svgdoc.importNode(newDoc.documentElement, true));
// change image href vals if possible
$(svgcontent).find('image').each(function() {
var image = this;
preventClickDefault(image);
var val = this.getAttributeNS(xlinkns, "href");
if(val.indexOf('data:') === 0) {
// Check if an SVG-edit data URI
var m = val.match(/svgedit_url=(.*?);/);
if(m) {
var url = decodeURIComponent(m[1]);
$(new Image()).load(function() {
image.setAttributeNS(xlinkns,'href',url);
}).attr('src',url);
}
}
// Add to encodableImages if it loads
canvas.embedImage(val);
});
// Fix XML for Opera/Win/Non-EN
if(!support.goodDecimals) {
canvas.fixOperaXML(svgcontent, newDoc.documentElement);
}
// recalculate dimensions on the top-level children so that unnecessary transforms
// are removed
var deepdive = function(node) {
if (node.nodeType == 1) {
var children = node.childNodes;
var i = children.length;
while (i--) { deepdive(children.item(i)); }
try {
recalculateDimensions(node);
} catch(e) { console.log(e); }
}
}
deepdive(svgcontent);
var content = $(svgcontent);
// determine proper size
var w, h;
if (content.attr("viewBox")) {
var vb = content.attr("viewBox").split(' ');
w = vb[2];
h = vb[3];
}
// handle content that doesn't have a viewBox
else {
var dims = content.attr(["width", "height"]);
w = convertToNum('width', dims.width);
h = convertToNum('height', dims.height);
// svgcontent.setAttribute("viewBox", ["0", "0", w, h].join(" "));
}
content.attr({
id: 'svgcontent',
width: w,
height: h,
overflow: 'visible'
});
batchCmd.addSubCommand(new InsertElementCommand(svgcontent));
// update root to the correct size
var changes = content.attr(["width", "height"]);
batchCmd.addSubCommand(new ChangeElementCommand(svgroot, changes));
// reset zoom
current_zoom = 1;
// identify layers
identifyLayers();
// reset transform lists
svgTransformLists = {};
canvas.clearSelection();
svgroot.appendChild(selectorManager.selectorParentGroup);
addCommandToHistory(batchCmd);
call("changed", [svgcontent]);
} catch(e) {
console.log(e);
return false;
}
return true;
};
// Function: setForeignString(xmlString, elt)
// This function sets the content of element elt to the input XML.
//
// Parameters:
// xmlString - The XML text.
// elt - the parent element to append to
//
// Returns:
// This function returns false if the set was unsuccessful, true otherwise.
this.setForeignString = function(xmlString, elt) {
try {
// convert string into XML document
var newDoc = Utils.text2xml('<svg xmlns="'+svgns+'" xmlns:xlink="'+xlinkns+'">'+xmlString+'</svg>');
// run it through our sanitizer to remove anything we do not support
sanitizeSvg(newDoc.documentElement);
elt.parentNode.replaceChild(svgdoc.importNode(newDoc.documentElement.firstChild, true), elt);
call("changed", [elt]);
} catch(e) {
console.log(e);
return false;
}
return true;
};
// Layer API Functions
// Group: Layers
var identifyLayers = function() {
all_layers = [];
var numchildren = svgcontent.childNodes.length;
// loop through all children of svgcontent
var orphans = [], layernames = [];
for (var i = 0; i < numchildren; ++i) {
var child = svgcontent.childNodes.item(i);
// for each g, find its layer name
if (child && child.nodeType == 1) {
if (child.tagName == "g") {
var name = $("title",child).text();
// store layer and name in global variable
if (name) {
layernames.push(name);
all_layers.push( [name,child] );
current_layer = child;
walkTree(child, function(e){e.setAttribute("style", "pointer-events:inherit");});
current_layer.setAttribute("style", "pointer-events:none");
}
// if group did not have a name, it is an orphan
else {
orphans.push(child);
}
}
// if child has a bbox (i.e. not a <title> or <defs> element), then it is an orphan
else if(canvas.getBBox(child) && child.nodeName != 'defs') { // Opera returns a BBox for defs
var bb = canvas.getBBox(child);
orphans.push(child);
}
}
}
// create a new layer and add all the orphans to it
if (orphans.length > 0) {
var i = 1;
while ($.inArray(("Layer " + i), layernames) != -1) { i++; }
var newname = "Layer " + i;
current_layer = svgdoc.createElementNS(svgns, "g");
var layer_title = svgdoc.createElementNS(svgns, "title");
layer_title.textContent = newname;
current_layer.appendChild(layer_title);
for (var j = 0; j < orphans.length; ++j) {
current_layer.appendChild(orphans[j]);
}
current_layer = svgcontent.appendChild(current_layer);
all_layers.push( [newname, current_layer] );
}
walkTree(current_layer, function(e){e.setAttribute("style","pointer-events:inherit");});
current_layer.setAttribute("style","pointer-events:all");
};
// Function: createLayer
// Creates a new top-level layer in the drawing with the given name, sets the current layer
// to it, and then clears the selection This function then calls the 'changed' handler.
// This is an undoable action.
//
// Parameters:
// name - The given name
this.createLayer = function(name) {
var batchCmd = new BatchCommand("Create Layer");
var new_layer = svgdoc.createElementNS(svgns, "g");
var layer_title = svgdoc.createElementNS(svgns, "title");
layer_title.textContent = name;
new_layer.appendChild(layer_title);
new_layer = svgcontent.appendChild(new_layer);
batchCmd.addSubCommand(new InsertElementCommand(new_layer));
addCommandToHistory(batchCmd);
canvas.clearSelection();
identifyLayers();
canvas.setCurrentLayer(name);
call("changed", [new_layer]);
};
// Function: deleteCurrentLayer
// Deletes the current layer from the drawing and then clears the selection. This function
// then calls the 'changed' handler. This is an undoable action.
this.deleteCurrentLayer = function() {
if (current_layer && all_layers.length > 1) {
var batchCmd = new BatchCommand("Delete Layer");
// actually delete from the DOM and store in our Undo History
var parent = current_layer.parentNode;
batchCmd.addSubCommand(new RemoveElementCommand(current_layer, parent));
parent.removeChild(current_layer);
addCommandToHistory(batchCmd);
canvas.clearSelection();
identifyLayers();
canvas.setCurrentLayer(all_layers[all_layers.length-1][0]);
call("changed", [svgcontent]);
return true;
}
return false;
};
// Function: getNumLayers
// Returns the number of layers in the current drawing.
//
// Returns:
// The number of layers in the current drawing.
this.getNumLayers = function() {
return all_layers.length;
};
// Function: getLayer
// Returns the name of the ith layer. If the index is out of range, an empty string is returned.
//
// Parameters:
// i - the zero-based index of the layer you are querying.
//
// Returns:
// The name of the ith layer
this.getLayer = function(i) {
if (i >= 0 && i < canvas.getNumLayers()) {
return all_layers[i][0];
}
return "";
};
// Function: getCurrentLayer
// Returns the name of the currently selected layer. If an error occurs, an empty string
// is returned.
//
// Returns:
// The name of the currently active layer.
this.getCurrentLayer = function() {
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][1] == current_layer) {
return all_layers[i][0];
}
}
return "";
};
// Function: setCurrentLayer
// Sets the current layer. If the name is not a valid layer name, then this function returns
// false. Otherwise it returns true. This is not an undo-able action.
//
// Parameters:
// name - the name of the layer you want to switch to.
//
// Returns:
// true if the current layer was switched, otherwise false
this.setCurrentLayer = function(name) {
name = toXml(name);
for (var i = 0; i < all_layers.length; ++i) {
if (name == all_layers[i][0]) {
if (current_layer != all_layers[i][1]) {
canvas.clearSelection();
current_layer.setAttribute("style", "pointer-events:none");
current_layer = all_layers[i][1];
current_layer.setAttribute("style", "pointer-events:all");
}
return true;
}
}
return false;
};
// Function: renameCurrentLayer
// Renames the current layer. If the layer name is not valid (i.e. unique), then this function
// does nothing and returns false, otherwise it returns true. This is an undo-able action.
//
// Parameters:
// newname - the new name you want to give the current layer. This name must be unique
// among all layer names.
//
// Returns:
// true if the rename succeeded, false otherwise.
this.renameCurrentLayer = function(newname) {
if (current_layer) {
var oldLayer = current_layer;
// setCurrentLayer will return false if the name doesn't already exists
if (!canvas.setCurrentLayer(newname)) {
var batchCmd = new BatchCommand("Rename Layer");
// find the index of the layer
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][1] == oldLayer) break;
}
var oldname = all_layers[i][0];
all_layers[i][0] = toXml(newname);
// now change the underlying title element contents
var len = oldLayer.childNodes.length;
for (var i = 0; i < len; ++i) {
var child = oldLayer.childNodes.item(i);
// found the <title> element, now append all the
if (child && child.tagName == "title") {
// wipe out old name
while (child.firstChild) { child.removeChild(child.firstChild); }
child.textContent = newname;
batchCmd.addSubCommand(new ChangeElementCommand(child, {"#text":oldname}));
addCommandToHistory(batchCmd);
call("changed", [oldLayer]);
return true;
}
}
}
current_layer = oldLayer;
}
return false;
};
// Function: setCurrentLayerPosition
// Changes the position of the current layer to the new value. If the new index is not valid,
// this function does nothing and returns false, otherwise it returns true. This is an
// undo-able action.
//
// Parameters:
// newpos - The zero-based index of the new position of the layer. This should be between
// 0 and (number of layers - 1)
//
// Returns:
// true if the current layer position was changed, false otherwise.
this.setCurrentLayerPosition = function(newpos) {
if (current_layer && newpos >= 0 && newpos < all_layers.length) {
for (var oldpos = 0; oldpos < all_layers.length; ++oldpos) {
if (all_layers[oldpos][1] == current_layer) break;
}
// some unknown error condition (current_layer not in all_layers)
if (oldpos == all_layers.length) { return false; }
if (oldpos != newpos) {
// if our new position is below us, we need to insert before the node after newpos
var refLayer = null;
var oldNextSibling = current_layer.nextSibling;
if (newpos > oldpos ) {
if (newpos < all_layers.length-1) {
refLayer = all_layers[newpos+1][1];
}
}
// if our new position is above us, we need to insert before the node at newpos
else {
refLayer = all_layers[newpos][1];
}
svgcontent.insertBefore(current_layer, refLayer);
addCommandToHistory(new MoveElementCommand(current_layer, oldNextSibling, svgcontent));
identifyLayers();
canvas.setCurrentLayer(all_layers[newpos][0]);
return true;
}
}
return false;
};
// Function: getLayerVisibility
// Returns whether the layer is visible. If the layer name is not valid, then this function
// returns false.
//
// Parameters:
// layername - the name of the layer which you want to query.
//
// Returns:
// The visibility state of the layer, or false if the layer name was invalid.
this.getLayerVisibility = function(layername) {
// find the layer
var layer = null;
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][0] == layername) {
layer = all_layers[i][1];
break;
}
}
if (!layer) return false;
return (layer.getAttribute("display") != "none");
};
// Function: setLayerVisibility
// Sets the visibility of the layer. If the layer name is not valid, this function return
// false, otherwise it returns true. This is an undo-able action.
//
// Parameters:
// layername - the name of the layer to change the visibility
// bVisible - true/false, whether the layer should be visible
//
// Returns:
// true if the layer's visibility was set, false otherwise
this.setLayerVisibility = function(layername, bVisible) {
// find the layer
var layer = null;
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][0] == layername) {
layer = all_layers[i][1];
break;
}
}
if (!layer) return false;
var oldDisplay = layer.getAttribute("display");
if (!oldDisplay) oldDisplay = "inline";
layer.setAttribute("display", bVisible ? "inline" : "none");
addCommandToHistory(new ChangeElementCommand(layer, {"display":oldDisplay}, "Layer Visibility"));
if (layer == current_layer) {
canvas.clearSelection();
pathActions.clear();
}
// call("changed", [selected]);
return true;
};
// Function: moveSelectedToLayer
// Moves the selected elements to layername. If the name is not a valid layer name, then false
// is returned. Otherwise it returns true. This is an undo-able action.
//
// Parameters:
// layername - the name of the layer you want to which you want to move the selected elements
//
// Returns:
// true if the selected elements were moved to the layer, false otherwise.
this.moveSelectedToLayer = function(layername) {
// find the layer
var layer = null;
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][0] == layername) {
layer = all_layers[i][1];
break;
}
}
if (!layer) return false;
var batchCmd = new BatchCommand("Move Elements to Layer");
// loop for each selected element and move it
var selElems = selectedElements;
var i = selElems.length;
while (i--) {
var elem = selElems[i];
if (!elem) continue;
var oldNextSibling = elem.nextSibling;
// TODO: this is pretty brittle!
var oldLayer = elem.parentNode;
layer.appendChild(elem);
batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldLayer));
}
addCommandToHistory(batchCmd);
return true;
};
// Function: getLayerOpacity
// Returns the opacity of the given layer. If the input name is not a layer, null is returned.
//
// Parameters:
// layername - name of the layer on which to get the opacity
//
// Returns:
// The opacity value of the given layer. This will be a value between 0.0 and 1.0, or null
// if layername is not a valid layer
this.getLayerOpacity = function(layername) {
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][0] == layername) {
var g = all_layers[i][1];
var opacity = g.getAttribute("opacity");
if (!opacity) {
opacity = "1.0";
}
return parseFloat(opacity);
}
}
return null;
};
// Function: setLayerOpacity
// Sets the opacity of the given layer. If the input name is not a layer, nothing happens.
// This is not an undo-able action. NOTE: this function exists solely to apply
// a highlighting/de-emphasis effect to a layer, when it is possible for a user to affect
// the opacity of a layer, we will need to allow this function to produce an undo-able action.
// If opacity is not a value between 0.0 and 1.0, then nothing happens.
//
// Parameters:
// layername - name of the layer on which to set the opacity
// opacity - a float value in the range 0.0-1.0
this.setLayerOpacity = function(layername, opacity) {
if (opacity < 0.0 || opacity > 1.0) return;
for (var i = 0; i < all_layers.length; ++i) {
if (all_layers[i][0] == layername) {
var g = all_layers[i][1];
g.setAttribute("opacity", opacity);
break;
}
}
};
// Function: selectAllInCurrentLayer
// Clears the selection, then adds all elements in the current layer to the selection.
// This function then fires the selected event.
this.selectAllInCurrentLayer = function() {
if (current_layer) {
canvas.clearSelection();
canvas.addToSelection($(current_layer).children());
current_mode = "select";
call("selected", selectedElements);
}
};
// Function: clear
// Clears the current document. This is not an undoable action.
this.clear = function() {
pathActions.clear();
// clear the svgcontent node
var nodes = svgcontent.childNodes;
var len = svgcontent.childNodes.length;
var i = 0;
this.clearSelection();
for(var rep = 0; rep < len; rep++){
if (nodes[i].nodeType == 1) { // element node
svgcontent.removeChild(nodes[i]);
} else {
i++;
}
}
// create empty first layer
all_layers = [];
canvas.createLayer("Layer 1");
// clear the undo stack
resetUndoStack();
// reset the selector manager
selectorManager.initGroup();
// reset the rubber band box
rubberBox = selectorManager.getRubberBandBox();
call("cleared");
};
this.linkControlPoints = function(linkPoints) {
pathActions.linkControlPoints(linkPoints);
}
this.getResolution = function() {
// var vb = svgcontent.getAttribute("viewBox").split(' ');
// return {'w':vb[2], 'h':vb[3], 'zoom': current_zoom};
return {
'w':svgcontent.getAttribute("width"),
'h':svgcontent.getAttribute("height"),
'zoom': current_zoom
};
};
this.getImageTitle = function() {
var childs = svgcontent.childNodes;
for (var i=0; i<childs.length; i++) {
if(childs[i].nodeName == 'title') {
return childs[i].textContent;
}
}
return '';
}
this.setImageTitle = function(newtitle) {
var childs = svgcontent.childNodes, doc_title = false, old_title = '';
var batchCmd = new BatchCommand("Change Image Title");
for (var i=0; i<childs.length; i++) {
if(childs[i].nodeName == 'title') {
doc_title = childs[i];
old_title = doc_title.textContent;
break;
}
}
if(!doc_title) {
doc_title = svgdoc.createElementNS(svgns, "title");
svgcontent.insertBefore(doc_title, svgcontent.firstChild);
}
if(newtitle.length) {
doc_title.textContent = newtitle;
} else {
// No title given, so element is not necessary
doc_title.parentNode.removeChild(doc_title);
}
batchCmd.addSubCommand(new ChangeElementCommand(doc_title, {'#text': old_title}));
addCommandToHistory(batchCmd);
}
this.getEditorNS = function(add) {
if(add) {
svgcontent.setAttribute('xmlns:se', se_ns);
}
return se_ns;
}
this.setResolution = function(x, y) {
var res = canvas.getResolution();
var w = res.w, h = res.h;
var batchCmd;
if(x == 'fit') {
// Get bounding box
var bbox = canvas.getStrokedBBox();
if(bbox) {
batchCmd = new BatchCommand("Fit Canvas to Content");
var visEls = canvas.getVisibleElements();
canvas.addToSelection(visEls);
var dx = [], dy = [];
$.each(visEls, function(i, item) {
dx.push(bbox.x*-1);
dy.push(bbox.y*-1);
});
var cmd = canvas.moveSelectedElements(dx, dy, true);
batchCmd.addSubCommand(cmd);
canvas.clearSelection();
x = Math.round(bbox.width);
y = Math.round(bbox.height);
} else {
return false;
}
}
if (x != w || y != h) {
var handle = svgroot.suspendRedraw(1000);
if(!batchCmd) {
batchCmd = new BatchCommand("Change Image Dimensions");
}
x = convertToNum('width', x);
y = convertToNum('height', y);
svgcontent.setAttribute('width', x);
svgcontent.setAttribute('height', y);
batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {"width":w, "height":h}));
svgcontent.setAttribute("viewBox", [0, 0, x/current_zoom, y/current_zoom].join(' '));
batchCmd.addSubCommand(new ChangeElementCommand(svgcontent, {"viewBox": ["0 0", w, h].join(' ')}));
addCommandToHistory(batchCmd);
svgroot.unsuspendRedraw(handle);
call("changed", [svgcontent]);
}
return true;
};
this.getOffset = function() {
return $(svgcontent).attr(['x', 'y']);
}
this.setBBoxZoom = function(val, editor_w, editor_h) {
var spacer = .85;
var bb;
var calcZoom = function(bb) {
if(!bb) return false;
var w_zoom = Math.round((editor_w / bb.width)*100 * spacer)/100;
var h_zoom = Math.round((editor_h / bb.height)*100 * spacer)/100;
var zoomlevel = Math.min(w_zoom,h_zoom);
canvas.setZoom(zoomlevel);
return {'zoom': zoomlevel, 'bbox': bb};
}
if(typeof val == 'object') {
bb = val;
if(bb.width == 0 || bb.height == 0) {
var newzoom = bb.zoom?bb.zoom:current_zoom * bb.factor;
canvas.setZoom(newzoom);
return {'zoom': current_zoom, 'bbox': bb};
}
return calcZoom(bb);
}
switch (val) {
case 'selection':
if(!selectedElements[0]) return;
var sel_elems = $.map(selectedElements, function(n){ if(n) return n; });
bb = canvas.getStrokedBBox(sel_elems);
break;
case 'canvas':
var res = canvas.getResolution();
spacer = .95;
bb = {width:res.w, height:res.h ,x:0, y:0};
break;
case 'content':
bb = canvas.getStrokedBBox();
break;
case 'layer':
bb = canvas.getStrokedBBox(canvas.getVisibleElements(current_layer));
break;
default:
return;
}
return calcZoom(bb);
}
this.setZoom = function(zoomlevel) {
var res = canvas.getResolution();
svgcontent.setAttribute("viewBox", "0 0 " + res.w/zoomlevel + " " + res.h/zoomlevel);
current_zoom = zoomlevel;
$.each(selectedElements, function(i, elem) {
if(!elem) return;
selectorManager.requestSelector(elem).resize();
});
pathActions.zoomChange();
}
this.getMode = function() {
return current_mode;
};
this.setMode = function(name) {
pathActions.modeChange();
cur_properties = (selectedElements[0] && selectedElements[0].nodeName == 'text') ? cur_text : cur_shape;
current_mode = name;
};
this.getStrokeColor = function() {
return cur_properties.stroke;
};
// TODO: rewrite setFillColor(), setStrokeColor(), setStrokeWidth(), setStrokeStyle()
// to use a common function?
this.setStrokeColor = function(val,preventUndo) {
cur_shape.stroke = val;
cur_properties.stroke_paint = {type:"solidColor"};
var elems = [];
var i = selectedElements.length;
while (i--) {
var elem = selectedElements[i];
if (elem) {
if (elem.tagName == "g")
walkTree(elem, function(e){if(e.nodeName!="g") elems.push(e);});
else
elems.push(elem);
}
}
if (elems.length > 0) {
if (!preventUndo) {
this.changeSelectedAttribute("stroke", val, elems);
call("changed", elems);
} else
this.changeSelectedAttributeNoUndo("stroke", val, elems);
}
};
this.getFillColor = function() {
return cur_properties.fill;
};
this.setFillColor = function(val,preventUndo) {
cur_properties.fill = val;
cur_properties.fill_paint = {type:"solidColor"};
// take out any path/line elements when setting fill
// add all descendants of groups (but remove groups)
var elems = [];
var i = selectedElements.length;
while (i--) {
var elem = selectedElements[i];
if (elem) {
if (elem.tagName == "g")
walkTree(elem, function(e){if(e.nodeName!="g") elems.push(e);});
else if (elem.tagName != "polyline" && elem.tagName != "line")
elems.push(elem);
}
}
if (elems.length > 0) {
if (!preventUndo) {
this.changeSelectedAttribute("fill", val, elems);
call("changed", elems);
} else
this.changeSelectedAttributeNoUndo("fill", val, elems);
}
};
var findDefs = function() {
var defs = svgcontent.getElementsByTagNameNS(svgns, "defs");
if (defs.length > 0) {
defs = defs[0];
}
else {
// first child is a comment, so call nextSibling
defs = svgcontent.insertBefore( svgdoc.createElementNS(svgns, "defs" ), svgcontent.firstChild.nextSibling);
}
return defs;
};
var addGradient = function() {
$.each(['stroke','fill'],function(i,type) {
if(!cur_properties[type + '_paint'] || cur_properties[type + '_paint'].type == "solidColor") return;
var grad = canvas[type + 'Grad'];
// find out if there is a duplicate gradient already in the defs
var duplicate_grad = findDuplicateGradient(grad);
var defs = findDefs();
// no duplicate found, so import gradient into defs
if (!duplicate_grad) {
var orig_grad = grad;
grad = defs.appendChild( svgdoc.importNode(grad, true) );
canvas.fixOperaXML(grad, orig_grad);
// get next id and set it on the grad
grad.id = getNextId();
}
else { // use existing gradient
grad = duplicate_grad;
}
var functype = type=='fill'?'Fill':'Stroke';
canvas['set'+ functype +'Color']("url(#" + grad.id + ")");
});
}
var findDuplicateGradient = function(grad) {
var defs = findDefs();
var existing_grads = defs.getElementsByTagNameNS(svgns, "linearGradient");
var i = existing_grads.length;
while (i--) {
var og = existing_grads.item(i);
if (grad.getAttribute('x1') != og.getAttribute('x1') ||
grad.getAttribute('y1') != og.getAttribute('y1') ||
grad.getAttribute('x2') != og.getAttribute('x2') ||
grad.getAttribute('y2') != og.getAttribute('y2'))
{
continue;
}
// else could be a duplicate, iterate through stops
var stops = grad.getElementsByTagNameNS(svgns, "stop");
var ostops = og.getElementsByTagNameNS(svgns, "stop");
if (stops.length != ostops.length) {
continue;
}
var j = stops.length;
while(j--) {
var stop = stops.item(j);
var ostop = ostops.item(j);
if (stop.getAttribute('offset') != ostop.getAttribute('offset') ||
stop.getAttribute('stop-opacity') != ostop.getAttribute('stop-opacity') ||
stop.getAttribute('stop-color') != ostop.getAttribute('stop-color'))
{
break;
}
}
if (j == -1) {
return og;
}
} // for each gradient in defs
return null;
};
// Group: Fill and Stroke
this.setStrokePaint = function(p, addGrad) {
// make a copy
var p = new $.jGraduate.Paint(p);
this.setStrokeOpacity(p.alpha/100);
// now set the current paint object
cur_properties.stroke_paint = p;
if (p.type == "solidColor") {
this.setStrokeColor(p.solidColor != "none" ? "#"+p.solidColor : "none");
}
else if(p.type == "linearGradient") {
canvas.strokeGrad = p.linearGradient;
if(addGrad) addGradient();
}
else {
// console.log("none!");
}
};
this.setFillPaint = function(p, addGrad) {
// make a copy
var p = new $.jGraduate.Paint(p);
this.setFillOpacity(p.alpha/100, true);
// now set the current paint object
cur_properties.fill_paint = p;
if (p.type == "solidColor") {
this.setFillColor(p.solidColor != "none" ? "#"+p.solidColor : "none");
}
else if(p.type == "linearGradient") {
canvas.fillGrad = p.linearGradient;
if(addGrad) addGradient();
}
else {
// console.log("none!");
}
};
this.getStrokeWidth = function() {
return cur_properties.stroke_width;
};
// When attempting to set a line's width to 0, change it to 1 instead
this.setStrokeWidth = function(val) {
if(val == 0 && $.inArray(current_mode, ['line', 'path']) != -1) {
canvas.setStrokeWidth(1);
return;
}
cur_properties.stroke_width = val;
var elems = [];
var i = selectedElements.length;
while (i--) {
var elem = selectedElements[i];
if (elem) {
if (elem.tagName == "g")
walkTree(elem, function(e){if(e.nodeName!="g") elems.push(e);});
else
elems.push(elem);
}
}
if (elems.length > 0) {
this.changeSelectedAttribute("stroke-width", val, elems);
}
};
this.getStrokeStyle = function() {
return cur_shape.stroke_style;
};
this.setStrokeStyle = function(val) {
cur_shape.stroke_style = val;
var elems = [];
var i = selectedElements.length;
while (i--) {
var elem = selectedElements[i];
if (elem) {
if (elem.tagName == "g")
walkTree(elem, function(e){if(e.nodeName!="g") elems.push(e);});
else
elems.push(elem);
}
}
if (elems.length > 0) {
this.changeSelectedAttribute("stroke-dasharray", val, elems);
}
};
this.getOpacity = function() {
return cur_shape.opacity;
};
this.setOpacity = function(val) {
cur_shape.opacity = val;
this.changeSelectedAttribute("opacity", val);
};
this.getFillOpacity = function() {
return cur_shape.fill_opacity;
};
this.setFillOpacity = function(val, preventUndo) {
cur_shape.fill_opacity = val;
if (!preventUndo)
this.changeSelectedAttribute("fill-opacity", val);
else
this.changeSelectedAttributeNoUndo("fill-opacity", val);
};
this.getStrokeOpacity = function() {
return cur_shape.stroke_opacity;
};
this.setStrokeOpacity = function(val, preventUndo) {
cur_shape.stroke_opacity = val;
if (!preventUndo)
this.changeSelectedAttribute("stroke-opacity", val);
else
this.changeSelectedAttributeNoUndo("stroke-opacity", val);
};
// returns an object that behaves like a SVGTransformList
this.getTransformList = function(elem) {
// Opera is included here because Opera/Win/Non-EN seems to change
// transformlist float vals to use a comma rather than a period.
if (isWebkit || !support.goodDecimals) {
var id = elem.id;
if(!id) {
// Get unique ID for temporary element
id = 'temp';
}
var t = svgTransformLists[id];
if (!t || id == 'temp') {
svgTransformLists[id] = new SVGEditTransformList(elem);
svgTransformLists[id]._init();
t = svgTransformLists[id];
}
return t;
}
else if (elem.transform) {
return elem.transform.baseVal;
}
return null;
};
this.getBBox = function(elem) {
var selected = elem || selectedElements[0];
if (elem.nodeType != 1) return null;
var ret = null;
if(elem.nodeName == 'text' && selected.textContent == '') {
selected.textContent = 'a'; // Some character needed for the selector to use.
ret = selected.getBBox();
selected.textContent = '';
} else if (elem.nodeName == 'g' && isOpera) {
// deal with an opera bug here
// the bbox on a 'g' is not correct if the elements inside have been moved
// so we create a new g, add all the children to it, add it to the DOM, get its bbox
// then put all the children back on the old g and remove the new g
// (this means we make no changes to the DOM, which saves us a lot of headache at
// the cost of performance)
ret = selected.getBBox();
var newg = document.createElementNS(svgns, "g");
while (selected.firstChild) { newg.appendChild(selected.firstChild); }
var i = selected.attributes.length;
while(i--) { newg.setAttributeNode(selected.attributes.item(i).cloneNode(true)); }
selected.parentNode.appendChild(newg);
ret = newg.getBBox();
while (newg.firstChild) { selected.appendChild(newg.firstChild); }
selected.parentNode.removeChild(newg);
} else if(elem.nodeName == 'path' && isWebkit) {
ret = getPathBBox(selected);
} else if(elem.nodeName == 'use' && !isWebkit) {
ret = selected.getBBox();
ret.x += parseFloat(selected.getAttribute('x'));
ret.y += parseFloat(selected.getAttribute('y'));
} else if(elem.nodeName == 'foreignObject') {
ret = selected.getBBox();
ret.x += parseFloat(selected.getAttribute('x'));
ret.y += parseFloat(selected.getAttribute('y'));
} else {
try { ret = selected.getBBox(); }
catch(e) { ret = null; }
}
// get the bounding box from the DOM (which is in that element's coordinate system)
return ret;
};
// we get the rotation angle in the tlist
this.getRotationAngle = function(elem, to_rad) {
var selected = elem || selectedElements[0];
// find the rotation transform (if any) and set it
var tlist = canvas.getTransformList(selected);
if(!tlist) return 0; // <svg> elements have no tlist
var N = tlist.numberOfItems;
for (var i = 0; i < N; ++i) {
var xform = tlist.getItem(i);
if (xform.type == 4) {
return to_rad ? xform.angle * Math.PI / 180.0 : xform.angle;
}
}
return 0.0;
};
// this should:
// - remove any old rotations if present
// - prepend a new rotation at the transformed center
this.setRotationAngle = function(val,preventUndo) {
// ensure val is the proper type
val = parseFloat(val);
var elem = selectedElements[0];
var oldTransform = elem.getAttribute("transform");
var bbox = canvas.getBBox(elem);
var cx = bbox.x+bbox.width/2, cy = bbox.y+bbox.height/2;
var tlist = canvas.getTransformList(elem);
// only remove the real rotational transform if present (i.e. at index=0)
if (tlist.numberOfItems > 0) {
var xform = tlist.getItem(0);
if (xform.type == 4) {
tlist.removeItem(0);
}
}
// find R_nc and insert it
if (val != 0) {
var center = transformPoint(cx,cy,transformListToTransform(tlist).matrix);
var R_nc = svgroot.createSVGTransform();
R_nc.setRotate(val, center.x, center.y);
tlist.insertItemBefore(R_nc,0);
}
else if (tlist.numberOfItems == 0) {
elem.removeAttribute("transform");
}
if (!preventUndo) {
// we need to undo it, then redo it so it can be undo-able! :)
// TODO: figure out how to make changes to transform list undo-able cross-browser?
var newTransform = elem.getAttribute("transform");
elem.setAttribute("transform", oldTransform);
this.changeSelectedAttribute("transform",newTransform,selectedElements);
}
var pointGripContainer = getElem("pathpointgrip_container");
if(elem.nodeName == "path" && pointGripContainer) {
pathActions.setPointContainerTransform(elem.getAttribute("transform"));
}
var selector = selectorManager.requestSelector(selectedElements[0]);
selector.resize();
selector.updateGripCursors(val);
};
this.each = function(cb) {
$(svgroot).children().each(cb);
};
this.bind = function(event, f) {
var old = events[event];
events[event] = f;
return old;
};
this.setIdPrefix = function(p) {
idprefix = p;
};
this.getBold = function() {
// should only have one element selected
var selected = selectedElements[0];
if (selected != null && selected.tagName == "text" &&
selectedElements[1] == null)
{
return (selected.getAttribute("font-weight") == "bold");
}
return false;
};
this.setBold = function(b) {
var selected = selectedElements[0];
if (selected != null && selected.tagName == "text" &&
selectedElements[1] == null)
{
this.changeSelectedAttribute("font-weight", b ? "bold" : "normal");
}
};
this.getItalic = function() {
var selected = selectedElements[0];
if (selected != null && selected.tagName == "text" &&
selectedElements[1] == null)
{
return (selected.getAttribute("font-style") == "italic");
}
return false;
};
this.setItalic = function(i) {
var selected = selectedElements[0];
if (selected != null && selected.tagName == "text" &&
selectedElements[1] == null)
{
this.changeSelectedAttribute("font-style", i ? "italic" : "normal");
}
};
this.getFontFamily = function() {
return cur_text.font_family;
};
this.setFontFamily = function(val) {
cur_text.font_family = val;
this.changeSelectedAttribute("font-family", val);
};
this.getFontSize = function() {
return cur_text.font_size;
};
this.setFontSize = function(val) {
cur_text.font_size = val;
this.changeSelectedAttribute("font-size", val);
};
this.getText = function() {
var selected = selectedElements[0];
if (selected == null) { return ""; }
return selected.textContent;
};
this.setTextContent = function(val) {
this.changeSelectedAttribute("#text", val);
};
this.setImageURL = function(val) {
svgCanvas.changeSelectedAttribute("#href", val);
};
this.setRectRadius = function(val) {
var selected = selectedElements[0];
if (selected != null && selected.tagName == "rect") {
var r = selected.getAttribute("rx");
if (r != val) {
selected.setAttribute("rx", val);
selected.setAttribute("ry", val);
addCommandToHistory(new ChangeElementCommand(selected, {"rx":r, "ry":r}, "Radius"));
call("changed", [selected]);
}
}
};
this.setSegType = function(new_type) {
pathActions.setSegType(new_type);
}
var ffClone = function(elem) {
// Hack for Firefox bugs where text element features aren't updated
if(navigator.userAgent.indexOf('Gecko/') == -1) return elem;
var clone = elem.cloneNode(true)
elem.parentNode.insertBefore(clone, elem);
elem.parentNode.removeChild(elem);
selectorManager.releaseSelector(elem);
selectedElements[0] = clone;
selectorManager.requestSelector(clone).showGrips(true);
return clone;
}
// New functions for refactoring of Undo/Redo
// this is the stack that stores the original values, the elements and
// the attribute name for begin/finish
var undoChangeStackPointer = -1;
var undoableChangeStack = [];
// This function tells the canvas to remember the old values of the
// attrName attribute for each element sent in. The elements and values
// are stored on a stack, so the next call to finishUndoableChange() will
// pop the elements and old values off the stack, gets the current values
// from the DOM and uses all of these to construct the undo-able command.
this.beginUndoableChange = function(attrName, elems) {
var p = ++undoChangeStackPointer;
var i = elems.length;
var oldValues = new Array(i), elements = new Array(i);
while (i--) {
var elem = elems[i];
if (elem == null) continue;
elements[i] = elem;
oldValues[i] = elem.getAttribute(attrName);
}
undoableChangeStack[p] = {'attrName': attrName,
'oldValues': oldValues,
'elements': elements};
};
// This function makes the changes to the elements
this.changeSelectedAttributeNoUndo = function(attr, newValue, elems) {
var handle = svgroot.suspendRedraw(1000);
if(current_mode == 'pathedit') {
// Editing node
pathActions.moveNode(attr, newValue);
}
var elems = elems || selectedElements;
var i = elems.length;
while (i--) {
var elem = elems[i];
if (elem == null) continue;
// Set x,y vals on elements that don't have them
if((attr == 'x' || attr == 'y') && $.inArray(elem.tagName, ['g', 'polyline', 'path']) != -1) {
var bbox = canvas.getStrokedBBox([elem]);
var diff_x = attr == 'x' ? newValue - bbox.x : 0;
var diff_y = attr == 'y' ? newValue - bbox.y : 0;
canvas.moveSelectedElements(diff_x*current_zoom, diff_y*current_zoom, true);
continue;
}
// only allow the transform/opacity attribute to change on <g> elements, slightly hacky
if (elem.tagName == "g" && (attr != "transform" && attr != "opacity")) continue;
var oldval = attr == "#text" ? elem.textContent : elem.getAttribute(attr);
if (oldval == null) oldval = "";
if (oldval != String(newValue)) {
if (attr == "#text") {
var old_w = canvas.getBBox(elem).width;
elem.textContent = newValue;
elem = ffClone(elem);
// Hoped to solve the issue of moving text with text-anchor="start",
// but this doesn't actually fix it. Hopefully on the right track, though. -Fyrd
// var box=canvas.getBBox(elem), left=box.x, top=box.y, width=box.width,
// height=box.height, dx = width - old_w, dy=0;
// var angle = canvas.getRotationAngle(elem, true);
// if (angle) {
// var r = Math.sqrt( dx*dx + dy*dy );
// var theta = Math.atan2(dy,dx) - angle;
// dx = r * Math.cos(theta);
// dy = r * Math.sin(theta);
//
// elem.setAttribute('x', elem.getAttribute('x')-dx);
// elem.setAttribute('y', elem.getAttribute('y')-dy);
// }
} else if (attr == "#href") {
elem.setAttributeNS(xlinkns, "href", newValue);
}
else elem.setAttribute(attr, newValue);
if (i==0)
selectedBBoxes[i] = this.getBBox(elem);
// Use the Firefox ffClone hack for text elements with gradients or
// where other text attributes are changed.
if(elem.nodeName == 'text') {
if((newValue+'').indexOf('url') == 0 || $.inArray(attr, ['font-size','font-family','x','y']) != -1) {
elem = ffClone(elem);
}
}
// Timeout needed for Opera & Firefox
// codedread: it is now possible for this function to be called with elements
// that are not in the selectedElements array, we need to only request a
// selector if the element is in that array
if ($.inArray(elem, selectedElements) != -1) {
setTimeout(function() {
// Due to element replacement, this element may no longer
// be part of the DOM
if(!elem.parentNode) return;
selectorManager.requestSelector(elem).resize();
},0);
}
// if this element was rotated, and we changed the position of this element
// we need to update the rotational transform attribute
var angle = canvas.getRotationAngle(elem);
if (angle != 0 && attr != "transform") {
var tlist = canvas.getTransformList(elem);
var n = tlist.numberOfItems;
while (n--) {
var xform = tlist.getItem(n);
if (xform.type == 4) {
// remove old rotate
tlist.removeItem(n);
var box = canvas.getBBox(elem);
var center = transformPoint(box.x+box.width/2, box.y+box.height/2, transformListToTransform(tlist).matrix);
var cx = center.x,
cy = center.y;
var newrot = svgroot.createSVGTransform();
newrot.setRotate(angle, cx, cy);
tlist.insertItemBefore(newrot, n);
break;
}
}
}
} // if oldValue != newValue
} // for each elem
svgroot.unsuspendRedraw(handle);
};
// This function returns a BatchCommand object which summarizes the
// change since beginUndoableChange was called. The command can then
// be added to the command history
this.finishUndoableChange = function() {
var p = undoChangeStackPointer--;
var changeset = undoableChangeStack[p];
var i = changeset['elements'].length;
var attrName = changeset['attrName'];
var batchCmd = new BatchCommand("Change " + attrName);
while (i--) {
var elem = changeset['elements'][i];
if (elem == null) continue;
var changes = {};
changes[attrName] = changeset['oldValues'][i];
if (changes[attrName] != elem.getAttribute(attrName)) {
batchCmd.addSubCommand(new ChangeElementCommand(elem, changes, attrName));
}
}
undoableChangeStack[p] = null;
return batchCmd;
};
// If you want to change all selectedElements, ignore the elems argument.
// If you want to change only a subset of selectedElements, then send the
// subset to this function in the elems argument.
this.changeSelectedAttribute = function(attr, val, elems) {
var elems = elems || selectedElements;
canvas.beginUndoableChange(attr, elems);
var i = elems.length;
canvas.changeSelectedAttributeNoUndo(attr, val, elems);
var batchCmd = canvas.finishUndoableChange();
if (!batchCmd.isEmpty()) {
addCommandToHistory(batchCmd);
}
};
this.deleteSelectedElements = function() {
var batchCmd = new BatchCommand("Delete Elements");
var len = selectedElements.length;
var selectedCopy = []; //selectedElements is being deleted
for (var i = 0; i < len; ++i) {
var selected = selectedElements[i];
if (selected == null) break;
var parent = selected.parentNode;
var t = selected;
// this will unselect the element and remove the selectedOutline
selectorManager.releaseSelector(t);
var elem = parent.removeChild(t);
selectedCopy.push(selected) //for the copy
selectedElements[i] = null;
batchCmd.addSubCommand(new RemoveElementCommand(elem, parent));
}
if (!batchCmd.isEmpty()) addCommandToHistory(batchCmd);
call("changed", selectedCopy);
canvas.clearSelection();
};
this.groupSelectedElements = function() {
var batchCmd = new BatchCommand("Group Elements");
// create and insert the group element
var g = addSvgElementFromJson({
"element": "g",
"attr": {
"id": getNextId()
}
});
batchCmd.addSubCommand(new InsertElementCommand(g));
// now move all children into the group
var i = selectedElements.length;
while (i--) {
var elem = selectedElements[i];
if (elem == null) continue;
var oldNextSibling = elem.nextSibling;
var oldParent = elem.parentNode;
g.appendChild(elem);
batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));
}
if (!batchCmd.isEmpty()) addCommandToHistory(batchCmd);
// update selection
canvas.clearSelection();
canvas.addToSelection([g], true);
};
this.ungroupSelectedElement = function() {
var g = selectedElements[0];
if (g.tagName == "g") {
var batchCmd = new BatchCommand("Ungroup Elements");
var parent = g.parentNode;
var anchor = g.previousSibling;
var children = new Array(g.childNodes.length);
var xform = g.getAttribute("transform");
// get consolidated matrix
var glist = canvas.getTransformList(g);
var m = transformListToTransform(glist).matrix;
// TODO: get all fill/stroke properties from the group that we are about to destroy
// "fill", "fill-opacity", "fill-rule", "stroke", "stroke-dasharray", "stroke-dashoffset",
// "stroke-linecap", "stroke-linejoin", "stroke-miterlimit", "stroke-opacity",
// "stroke-width"
// and then for each child, if they do not have the attribute (or the value is 'inherit')
// then set the child's attribute
// TODO: get the group's opacity and propagate it down to the children (multiply it
// by the child's opacity (or 1.0)
var i = 0;
var gangle = canvas.getRotationAngle(g);
while (g.firstChild) {
var elem = g.firstChild;
var oldNextSibling = elem.nextSibling;
var oldParent = elem.parentNode;
children[i++] = elem = parent.insertBefore(elem, anchor);
batchCmd.addSubCommand(new MoveElementCommand(elem, oldNextSibling, oldParent));
var chtlist = canvas.getTransformList(elem);
if (glist.numberOfItems) {
// TODO: if the group's transform is just a rotate, we can always transfer the
// rotate() down to the children (collapsing consecutive rotates and factoring
// out any translates)
if (gangle && glist.numberOfItems == 1) {
// [Rg] [Rc] [Mc]
// we want [Tr] [Rc2] [Mc] where:
// - [Rc2] is at the child's current center but has the
// sum of the group and child's rotation angles
// - [Tr] is the equivalent translation that this child
// undergoes if the group wasn't there
// [Tr] = [Rg] [Rc] [Rc2_inv]
// get group's rotation matrix (Rg)
var rgm = glist.getItem(0).matrix;
// get child's rotation matrix (Rc)
var rcm = svgroot.createSVGMatrix();
var cangle = canvas.getRotationAngle(elem);
if (cangle) {
rcm = chtlist.getItem(0).matrix;
}
// get child's old center of rotation
var cbox = canvas.getBBox(elem);
var ceqm = transformListToTransform(chtlist).matrix;
var coldc = transformPoint(cbox.x+cbox.width/2, cbox.y+cbox.height/2,ceqm);
// sum group and child's angles
var sangle = gangle + cangle;
// get child's rotation at the old center (Rc2_inv)
var r2 = svgroot.createSVGTransform();
r2.setRotate(sangle, coldc.x, coldc.y);
// calculate equivalent translate
var trm = matrixMultiply(rgm, rcm, r2.matrix.inverse());
// set up tlist
if (cangle) {
chtlist.removeItem(0);
}
if (sangle) {
chtlist.insertItemBefore(r2, 0);
}
if (trm.e || trm.f) {
var tr = svgroot.createSVGTransform();
tr.setTranslate(trm.e, trm.f);
chtlist.insertItemBefore(tr, 0);
}
}
else { // more complicated than just a rotate
// transfer the group's transform down to each child and then
// call recalculateDimensions()
var oldxform = elem.getAttribute("transform");
var changes = {};
changes["transform"] = oldxform ? oldxform : "";
var newxform = svgroot.createSVGTransform();
// [ gm ] [ chm ] = [ chm ] [ gm' ]
// [ gm' ] = [ chm_inv ] [ gm ] [ chm ]
var chm = transformListToTransform(chtlist).matrix,
chm_inv = chm.inverse();
var gm = matrixMultiply( chm_inv, m, chm );
newxform.setMatrix(gm);
chtlist.appendItem(newxform);
}
batchCmd.addSubCommand(recalculateDimensions(elem));
}
}
// remove transform and make it undo-able
if (xform) {
var changes = {};
changes["transform"] = xform;
g.setAttribute("transform", "");
g.removeAttribute("transform");
batchCmd.addSubCommand(new ChangeElementCommand(g, changes));
}
// remove the group from the selection
canvas.clearSelection();
// delete the group element (but make undo-able)
g = parent.removeChild(g);
batchCmd.addSubCommand(new RemoveElementCommand(g, parent));
if (!batchCmd.isEmpty()) addCommandToHistory(batchCmd);
// update selection
canvas.addToSelection(children);
}
};
this.moveToTopSelectedElement = function() {
var selected = selectedElements[0];
if (selected != null) {
var t = selected;
var oldParent = t.parentNode;
var oldNextSibling = t.nextSibling;
if (oldNextSibling == selectorManager.selectorParentGroup) oldNextSibling = null;
t = t.parentNode.appendChild(t);
addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, "top"));
}
};
this.moveToBottomSelectedElement = function() {
var selected = selectedElements[0];
if (selected != null) {
var t = selected;
var oldParent = t.parentNode;
var oldNextSibling = t.nextSibling;
if (oldNextSibling == selectorManager.selectorParentGroup) oldNextSibling = null;
var firstChild = t.parentNode.firstChild;
if (firstChild.tagName == 'title') {
firstChild = firstChild.nextSibling;
}
// This can probably be removed, as the defs should not ever apppear
// inside a layer group
if (firstChild.tagName == 'defs') {
firstChild = firstChild.nextSibling;
}
t = t.parentNode.insertBefore(t, firstChild);
addCommandToHistory(new MoveElementCommand(t, oldNextSibling, oldParent, "bottom"));
}
};
this.moveSelectedElements = function(dx,dy,undoable) {
// if undoable is not sent, default to true
// if single values, scale them to the zoom
if (dx.constructor != Array) {
dx /= current_zoom;
dy /= current_zoom;
}
var undoable = undoable || true;
var batchCmd = new BatchCommand("position");
var i = selectedElements.length;
while (i--) {
var selected = selectedElements[i];
if (selected != null) {
if (i==0)
selectedBBoxes[i] = this.getBBox(selected);
var xform = svgroot.createSVGTransform();
var tlist = canvas.getTransformList(selected);
// dx and dy could be arrays
if (dx.constructor == Array) {
if (i==0) {
selectedBBoxes[i].x += dx[i];
selectedBBoxes[i].y += dy[i];
}
xform.setTranslate(dx[i],dy[i]);
} else {
if (i==0) {
selectedBBoxes[i].x += dx;
selectedBBoxes[i].y += dy;
}
xform.setTranslate(dx,dy);
}
tlist.insertItemBefore(xform, 0);
var cmd = recalculateDimensions(selected);
if (cmd) {
batchCmd.addSubCommand(cmd);
}
selectorManager.requestSelector(selected).resize();
}
}
if (!batchCmd.isEmpty()) {
if (undoable)
addCommandToHistory(batchCmd);
call("changed", selectedElements);
return batchCmd;
}
};
var getPathBBox = function(path) {
// Get correct BBox for a path in Webkit
// Converted from code found here:
// http://blog.hackers-cafe.net/2009/06/how-to-calculate-bezier-curves-bounding.html
var seglist = path.pathSegList;
var tot = seglist.numberOfItems;
var bounds = [[], []];
var start = seglist.getItem(0);
var P0 = [start.x, start.y];
for(var i=0; i < tot; i++) {
var seg = seglist.getItem(i);
if(!seg.x) continue;
// Add actual points to limits
bounds[0].push(P0[0]);
bounds[1].push(P0[1]);
if(seg.x1) {
var P1 = [seg.x1, seg.y1],
P2 = [seg.x2, seg.y2],
P3 = [seg.x, seg.y];
for(var j=0; j < 2; j++) {
var calc = function(t) {
return Math.pow(1-t,3) * P0[j]
+ 3 * Math.pow(1-t,2) * t * P1[j]
+ 3 * (1-t) * Math.pow(t,2) * P2[j]
+ Math.pow(t,3) * P3[j];
};
var b = 6 * P0[j] - 12 * P1[j] + 6 * P2[j];
var a = -3 * P0[j] + 9 * P1[j] - 9 * P2[j] + 3 * P3[j];
var c = 3 * P1[j] - 3 * P0[j];
if(a == 0) {
if(b == 0) {
continue;
}
var t = -c / b;
if(0 < t && t < 1) {
bounds[j].push(calc(t));
}
continue;
}
var b2ac = Math.pow(b,2) - 4 * c * a;
if(b2ac < 0) continue;
var t1 = (-b + Math.sqrt(b2ac))/(2 * a);
if(0 < t1 && t1 < 1) bounds[j].push(calc(t1));
var t2 = (-b - Math.sqrt(b2ac))/(2 * a);
if(0 < t2 && t2 < 1) bounds[j].push(calc(t2));
}
P0 = P3;
} else {
bounds[0].push(seg.x);
bounds[1].push(seg.y);
}
}
var x = Math.min.apply(null, bounds[0]);
var w = Math.max.apply(null, bounds[0]) - x;
var y = Math.min.apply(null, bounds[1]);
var h = Math.max.apply(null, bounds[1]) - y;
return {
'x': x,
'y': y,
'width': w,
'height': h
};
}
this.updateCanvas = function(w, h, w_orig, h_orig) {
svgroot.setAttribute("width", w);
svgroot.setAttribute("height", h);
var bg = $('#canvasBackground')[0];
var old_x = svgcontent.getAttribute('x');
var old_y = svgcontent.getAttribute('y');
var x = (w/2 - svgcontent.getAttribute('width')*current_zoom/2);
var y = (h/2 - svgcontent.getAttribute('height')*current_zoom/2);
assignAttributes(svgcontent, {
'x': x,
'y': y
});
assignAttributes(bg, {
width: svgcontent.getAttribute('width') * current_zoom,
height: svgcontent.getAttribute('height') * current_zoom,
x: x,
y: y
});
selectorManager.selectorParentGroup.setAttribute("transform","translate(" + x + "," + y + ")");
return {x:x, y:y, old_x:old_x, old_y:old_y, d_x:x - old_x, d_y:y - old_y};
}
this.getStrokedBBox = function(elems) {
if(!elems) elems = canvas.getVisibleElements();
if(!elems.length) return false;
// Make sure the expected BBox is returned if the element is a group
// FIXME: doesn't this mean that every time we call getStrokedBBox() that we are
// re-creating the getCheckedBBox() function? shouldn't we make this a function
// at the 'canvas' level
var getCheckedBBox = function(elem) {
try {
// TODO: Fix issue with rotated groups. Currently they work
// fine in FF, but not in other browsers (same problem mentioned
// in Issue 339 comment #2).
var bb = canvas.getBBox(elem);
var angle = canvas.getRotationAngle(elem);
if ((angle && angle % 90) || hasMatrixTransform(canvas.getTransformList(elem))) {
// Accurate way to get BBox of rotated element in Firefox:
// Put element in group and get its BBox
var good_bb = false;
// Get the BBox from the raw path for these elements
var elemNames = ['ellipse','path','line','polyline','polygon'];
if($.inArray(elem.tagName, elemNames) != -1) {
bb = good_bb = canvas.convertToPath(elem, true, angle);
} else if(elem.tagName == 'rect') {
// Look for radius
var rx = elem.getAttribute('rx');
var ry = elem.getAttribute('ry');
if(rx || ry) {
bb = good_bb = canvas.convertToPath(elem, true, angle);
}
}
if(!good_bb) {
var g = document.createElementNS(svgns, "g");
var parent = elem.parentNode;
parent.replaceChild(g, elem);
g.appendChild(elem);
bb = g.getBBox();
parent.insertBefore(elem,g);
parent.removeChild(g);
}
// Old method: Works by giving the rotated BBox,
// this is (unfortunately) what Opera and Safari do
// natively when getting the BBox of the parent group
// var angle = angle * Math.PI / 180.0;
// var rminx = Number.MAX_VALUE, rminy = Number.MAX_VALUE,
// rmaxx = Number.MIN_VALUE, rmaxy = Number.MIN_VALUE;
// var cx = round(bb.x + bb.width/2),
// cy = round(bb.y + bb.height/2);
// var pts = [ [bb.x - cx, bb.y - cy],
// [bb.x + bb.width - cx, bb.y - cy],
// [bb.x + bb.width - cx, bb.y + bb.height - cy],
// [bb.x - cx, bb.y + bb.height - cy] ];
// var j = 4;
// while (j--) {
// var x = pts[j][0],
// y = pts[j][1],
// r = Math.sqrt( x*x + y*y );
// var theta = Math.atan2(y,x) + angle;
// x = round(r * Math.cos(theta) + cx);
// y = round(r * Math.sin(theta) + cy);
//
// // now set the bbox for the shape after it's been rotated
// if (x < rminx) rminx = x;
// if (y < rminy) rminy = y;
// if (x > rmaxx) rmaxx = x;
// if (y > rmaxy) rmaxy = y;
// }
//
// bb.x = rminx;
// bb.y = rminy;
// bb.width = rmaxx - rminx;
// bb.height = rmaxy - rminy;
}
return bb;
} catch(e) { return null; }
}
var full_bb;
$.each(elems, function() {
if(full_bb) return;
if(!this.parentNode) return;
full_bb = getCheckedBBox(this);
});
// This shouldn't ever happen...
if(full_bb == null) return null;
// full_bb doesn't include the stoke, so this does no good!
// if(elems.length == 1) return full_bb;
var max_x = full_bb.x + full_bb.width;
var max_y = full_bb.y + full_bb.height;
var min_x = full_bb.x;
var min_y = full_bb.y;
// FIXME: same re-creation problem with this function as getCheckedBBox() above
var getOffset = function(elem) {
var sw = elem.getAttribute("stroke-width");
var offset = 0;
if (elem.getAttribute("stroke") != "none" && !isNaN(sw)) {
offset += sw/2;
}
return offset;
}
var bboxes = [];
$.each(elems, function(i, elem) {
var cur_bb = getCheckedBBox(elem);
if(!cur_bb) return;
var offset = getOffset(elem);
min_x = Math.min(min_x, cur_bb.x - offset);
min_y = Math.min(min_y, cur_bb.y - offset);
bboxes.push(cur_bb);
});
full_bb.x = min_x;
full_bb.y = min_y;
$.each(elems, function(i, elem) {
var cur_bb = bboxes[i];
var offset = getOffset(elem);
max_x = Math.max(max_x, cur_bb.x + cur_bb.width + offset);
max_y = Math.max(max_y, cur_bb.y + cur_bb.height + offset);
});
full_bb.width = max_x - min_x;
full_bb.height = max_y - min_y;
return full_bb;
}
this.getVisibleElements = function(parent, includeBBox) {
if(!parent) parent = $(svgcontent).children(); // Prevent layers from being included
var contentElems = [];
$(parent).children().each(function(i, elem) {
try {
var box = elem.getBBox();
if (box) {
var item = includeBBox?{'elem':elem, 'bbox':canvas.getStrokedBBox([elem])}:elem;
contentElems.push(item);
}
} catch(e) {}
});
return contentElems.reverse();
}
this.cycleElement = function(next) {
var cur_elem = selectedElements[0];
var elem = false;
var all_elems = this.getVisibleElements(current_layer);
if (cur_elem == null) {
var num = next?all_elems.length-1:0;
elem = all_elems[num];
} else {
var i = all_elems.length;
while(i--) {
if(all_elems[i] == cur_elem) {
var num = next?i-1:i+1;
if(num >= all_elems.length) {
num = 0;
} else if(num < 0) {
num = all_elems.length-1;
}
elem = all_elems[num];
break;
}
}
}
canvas.clearSelection();
canvas.addToSelection([elem], true);
call("selected", selectedElements);
}
var resetUndoStack = function() {
undoStack = [];
undoStackPointer = 0;
};
this.getUndoStackSize = function() { return undoStackPointer; };
this.getRedoStackSize = function() { return undoStack.length - undoStackPointer; };
this.getNextUndoCommandText = function() {
if (undoStackPointer > 0)
return undoStack[undoStackPointer-1].text;
return "";
};
this.getNextRedoCommandText = function() {
if (undoStackPointer < undoStack.length)
return undoStack[undoStackPointer].text;
return "";
};
this.undo = function() {
if (undoStackPointer > 0) {
this.clearSelection();
pathActions.clear();
var cmd = undoStack[--undoStackPointer];
cmd.unapply();
call("changed", cmd.elements());
}
};
this.redo = function() {
if (undoStackPointer < undoStack.length && undoStack.length > 0) {
this.clearSelection();
var cmd = undoStack[undoStackPointer++];
cmd.apply();
call("changed", cmd.elements());
}
};
// this function no longer uses cloneNode because we need to update the id
// of every copied element (even the descendants)
// we also do it manually because Opera/Win/non-EN puts , instead of .
var copyElem = function(el) {
// manually create a copy of the element
var new_el = document.createElementNS(el.namespaceURI, el.nodeName);
$.each(el.attributes, function(i, attr) {
if (attr.localName != '-moz-math-font-style')
new_el.setAttributeNS(attr.namespaceURI, attr.nodeName, attr.nodeValue);
});
// set the copied element's new id
new_el.removeAttribute("id");
new_el.id = getNextId();
// manually increment obj_num because our cloned elements are not in the DOM yet
obj_num++;
// Opera's "d" value needs to be reset for Opera/Win/non-EN
// Also needed for webkit (else does not keep curved segments on clone)
if((isWebkit || !support.goodDecimals) && el.nodeName == 'path') {
var fixed_d = pathActions.convertPath(el);
new_el.setAttribute('d', fixed_d);
}
// now create copies of all children
$.each(el.childNodes, function(i, child) {
switch(child.nodeType) {
case 1: // element node
new_el.appendChild(copyElem(child));
break;
case 3: // text node
new_el.appendChild(child.cloneNode(false));
break;
default:
break;
}
});
if(new_el.tagName == 'image') {
preventClickDefault(new_el);
}
return new_el;
};
var preventClickDefault = function(img) {
$(img).click(function(e){e.preventDefault()});
}
// this creates deep DOM copies (clones) of all selected elements
this.cloneSelectedElements = function() {
var batchCmd = new BatchCommand("Clone Elements");
// find all the elements selected (stop at first null)
var len = selectedElements.length;
for (var i = 0; i < len; ++i) {
var elem = selectedElements[i];
if (elem == null) break;
}
// use slice to quickly get the subset of elements we need
var copiedElements = selectedElements.slice(0,i);
this.clearSelection();
// note that we loop in the reverse way because of the way elements are added
// to the selectedElements array (top-first)
var i = copiedElements.length;
while (i--) {
// clone each element and replace it within copiedElements
var elem = copiedElements[i] = copyElem(copiedElements[i]);
current_layer.appendChild(elem);
batchCmd.addSubCommand(new InsertElementCommand(elem));
}
if (!batchCmd.isEmpty()) {
this.addToSelection(copiedElements.reverse()); // Need to reverse for correct selection-adding
this.moveSelectedElements(20,20,false);
addCommandToHistory(batchCmd);
call("selected", selectedElements);
}
};
this.setBackground = function(color, url) {
var bg = getElem('canvasBackground');
var border = $(bg).find('rect')[0];
var bg_img = getElem('background_image');
border.setAttribute('fill',color);
if(url) {
if(!bg_img) {
bg_img = svgdoc.createElementNS(svgns, "image");
assignAttributes(bg_img, {
'id': 'background_image',
'width': '100%',
'height': '100%',
'preserveAspectRatio': 'xMinYMin',
'style':'pointer-events:none'
});
}
bg_img.setAttributeNS(xlinkns, "href", url);
bg.appendChild(bg_img);
} else if(bg_img) {
bg_img.parentNode.removeChild(bg_img);
}
}
// aligns selected elements (type is a char - see switch below for explanation)
// relative_to can be "selected", "largest", "smallest", "page"
this.alignSelectedElements = function(type, relative_to) {
var bboxes = [], angles = [];
var minx = Number.MAX_VALUE, maxx = Number.MIN_VALUE, miny = Number.MAX_VALUE, maxy = Number.MIN_VALUE;
var curwidth = Number.MIN_VALUE, curheight = Number.MIN_VALUE;
var len = selectedElements.length;
if (!len) return;
for (var i = 0; i < len; ++i) {
if (selectedElements[i] == null) break;
var elem = selectedElements[i];
bboxes[i] = canvas.getStrokedBBox([elem]);
// now bbox is axis-aligned and handles rotation
switch (relative_to) {
case 'smallest':
if ( (type == 'l' || type == 'c' || type == 'r') && (curwidth == Number.MIN_VALUE || curwidth > bboxes[i].width) ||
(type == 't' || type == 'm' || type == 'b') && (curheight == Number.MIN_VALUE || curheight > bboxes[i].height) ) {
minx = bboxes[i].x;
miny = bboxes[i].y;
maxx = bboxes[i].x + bboxes[i].width;
maxy = bboxes[i].y + bboxes[i].height;
curwidth = bboxes[i].width;
curheight = bboxes[i].height;
}
break;
case 'largest':
if ( (type == 'l' || type == 'c' || type == 'r') && (curwidth == Number.MIN_VALUE || curwidth < bboxes[i].width) ||
(type == 't' || type == 'm' || type == 'b') && (curheight == Number.MIN_VALUE || curheight < bboxes[i].height) ) {
minx = bboxes[i].x;
miny = bboxes[i].y;
maxx = bboxes[i].x + bboxes[i].width;
maxy = bboxes[i].y + bboxes[i].height;
curwidth = bboxes[i].width;
curheight = bboxes[i].height;
}
break;
default: // 'selected'
if (bboxes[i].x < minx) minx = bboxes[i].x;
if (bboxes[i].y < miny) miny = bboxes[i].y;
if (bboxes[i].x + bboxes[i].width > maxx) maxx = bboxes[i].x + bboxes[i].width;
if (bboxes[i].y + bboxes[i].height > maxy) maxy = bboxes[i].y + bboxes[i].height;
break;
}
} // loop for each element to find the bbox and adjust min/max
if (relative_to == 'page') {
minx = 0;
miny = 0;
maxx = svgcontent.getAttribute('width');
maxy = svgcontent.getAttribute('height');
}
var dx = new Array(len);
var dy = new Array(len);
for (var i = 0; i < len; ++i) {
if (selectedElements[i] == null) break;
var elem = selectedElements[i];
var bbox = bboxes[i];
dx[i] = 0;
dy[i] = 0;
switch (type) {
case 'l': // left (horizontal)
dx[i] = minx - bbox.x;
break;
case 'c': // center (horizontal)
dx[i] = (minx+maxx)/2 - (bbox.x + bbox.width/2);
break;
case 'r': // right (horizontal)
dx[i] = maxx - (bbox.x + bbox.width);
break;
case 't': // top (vertical)
dy[i] = miny - bbox.y;
break;
case 'm': // middle (vertical)
dy[i] = (miny+maxy)/2 - (bbox.y + bbox.height/2);
break;
case 'b': // bottom (vertical)
dy[i] = maxy - (bbox.y + bbox.height);
break;
}
}
this.moveSelectedElements(dx,dy);
};
this.getZoom = function(){return current_zoom;};
// Function: getVersion
// Returns a string which describes the revision number of SvgCanvas.
this.getVersion = function() {
return "svgcanvas.js ($Rev: 1391 $)";
};
this.setUiStrings = function(strs) {
$.extend(uiStrings, strs);
}
this.clear();
this.ready = function(cb) {
this.callback = cb;
}
this.runCallback = function() {
if(this.callback) {
this.callback();
}
}
function getElem(id) {
if(svgroot.querySelector) {
// querySelector lookup
return svgroot.querySelector('#'+id);
} else if(svgdoc.evaluate) {
// xpath lookup
return svgdoc.evaluate('svg:svg[@id="svgroot"]//svg:*[@id="'+id+'"]', container, function() { return "http://www.w3.org/2000/svg"; }, 9, null).singleNodeValue;
} else {
// jQuery lookup: twice as slow as xpath in FF
return $(svgroot).find('[id=' + id + ']')[0];
}
// getElementById lookup: includes icons, not good
// return svgdoc.getElementById(id);
}
// Being able to access private methods publicly seems wrong somehow,
// but currently appears to be the best way to allow testing and provide
// access to them to plugins.
this.getPrivateMethods = function() {
return {
addCommandToHistory: addCommandToHistory,
addGradient: addGradient,
addSvgElementFromJson: addSvgElementFromJson,
assignAttributes: assignAttributes,
BatchCommand: BatchCommand,
call: call,
ChangeElementCommand: ChangeElementCommand,
cleanupElement: cleanupElement,
copyElem: copyElem,
ffClone: ffClone,
findDefs: findDefs,
findDuplicateGradient: findDuplicateGradient,
fromXml: fromXml,
getElem: getElem,
getId: getId,
getIntersectionList: getIntersectionList,
getNextId: getNextId,
getPathBBox: getPathBBox,
getUrlFromAttr: getUrlFromAttr,
hasMatrixTransform: hasMatrixTransform,
identifyLayers: identifyLayers,
InsertElementCommand: InsertElementCommand,
isIdentity: isIdentity,
logMatrix: logMatrix,
matrixMultiply: matrixMultiply,
MoveElementCommand: MoveElementCommand,
preventClickDefault: preventClickDefault,
recalculateAllSelectedDimensions: recalculateAllSelectedDimensions,
recalculateDimensions: recalculateDimensions,
remapElement: remapElement,
RemoveElementCommand: RemoveElementCommand,
removeUnusedGrads: removeUnusedGrads,
resetUndoStack: resetUndoStack,
round: round,
runExtensions: runExtensions,
sanitizeSvg: sanitizeSvg,
Selector: Selector,
SelectorManager: SelectorManager,
shortFloat: shortFloat,
svgCanvasToString: svgCanvasToString,
SVGEditTransformList: SVGEditTransformList,
svgToString: svgToString,
toString: toString,
toXml: toXml,
transformBox: transformBox,
transformListToTransform: transformListToTransform,
transformPoint: transformPoint,
transformToObj: transformToObj,
walkTree: walkTree
}
}
this.addExtension = function(name, ext_func) {
if(!(name in extensions)) {
// Provide private vars/funcs here. Is there a better way to do this?
var ext = ext_func($.extend(canvas.getPrivateMethods(), {
svgroot: svgroot,
svgcontent: svgcontent,
selectorManager: selectorManager
}));
extensions[name] = ext;
call("extension_added", ext);
} else {
console.log('Cannot add extension "' + name + '", an extension by that name already exists"');
}
};
// Test support for features/bugs
(function() {
// segList functions (for FF1.5 and 2.0)
var path = document.createElementNS(svgns,'path');
path.setAttribute('d','M0,0 10,10');
var seglist = path.pathSegList;
var seg = path.createSVGPathSegLinetoAbs(5,5);
try {
seglist.replaceItem(seg, 0);
support.pathReplaceItem = true;
} catch(err) {
support.pathReplaceItem = false;
}
try {
seglist.insertItemBefore(seg, 0);
support.pathInsertItemBefore = true;
} catch(err) {
support.pathInsertItemBefore = false;
}
// Correct decimals on clone attributes (Opera/win/non-en)
var rect = document.createElementNS(svgns,'rect');
rect.setAttribute('x',.1);
var crect = rect.cloneNode(false);
support.goodDecimals = (crect.getAttribute('x').indexOf(',') == -1);
// Get correct em/ex values
var rect = document.createElementNS(svgns,'rect');
rect.setAttribute('width',"1em");
rect.setAttribute('height',"1ex");
svgcontent.appendChild(rect);
var bb = rect.getBBox();
unit_types.em = bb.width;
unit_types.ex = bb.height;
svgcontent.removeChild(rect);
}());
}
// Static class for various utility functions
var Utils = {
// This code was written by Tyler Akins and has been placed in the
// public domain. It would be nice if you left this header intact.
// Base64 code from Tyler Akins -- http://rumkin.com
// schiller: Removed string concatenation in favour of Array.join() optimization,
// also precalculate the size of the array needed.
"_keyStr" : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
"encode64" : function(input) {
// base64 strings are 4/3 larger than the original string
// input = Utils.encodeUTF8(input); // convert non-ASCII characters
input = Utils.convertToXMLReferences(input);
if(window.btoa) return window.btoa(input); // Use native if available
var output = new Array( Math.floor( (input.length + 2) / 3 ) * 4 );
var chr1, chr2, chr3;
var enc1, enc2, enc3, enc4;
var i = 0, p = 0;
do {
chr1 = input.charCodeAt(i++);
chr2 = input.charCodeAt(i++);
chr3 = input.charCodeAt(i++);
enc1 = chr1 >> 2;
enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
enc4 = chr3 & 63;
if (isNaN(chr2)) {
enc3 = enc4 = 64;
} else if (isNaN(chr3)) {
enc4 = 64;
}
output[p++] = this._keyStr.charAt(enc1);
output[p++] = this._keyStr.charAt(enc2);
output[p++] = this._keyStr.charAt(enc3);
output[p++] = this._keyStr.charAt(enc4);
} while (i < input.length);
return output.join('');
},
"decode64" : function(input) {
if(window.atob) return window.atob(input);
var output = "";
var chr1, chr2, chr3 = "";
var enc1, enc2, enc3, enc4 = "";
var i = 0;
// remove all characters that are not A-Z, a-z, 0-9, +, /, or =
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
do {
enc1 = this._keyStr.indexOf(input.charAt(i++));
enc2 = this._keyStr.indexOf(input.charAt(i++));
enc3 = this._keyStr.indexOf(input.charAt(i++));
enc4 = this._keyStr.indexOf(input.charAt(i++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
output = output + String.fromCharCode(chr1);
if (enc3 != 64) {
output = output + String.fromCharCode(chr2);
}
if (enc4 != 64) {
output = output + String.fromCharCode(chr3);
}
chr1 = chr2 = chr3 = "";
enc1 = enc2 = enc3 = enc4 = "";
} while (i < input.length);
return unescape(output);
},
// based on http://phpjs.org/functions/utf8_encode:577
// codedread:does not seem to work with webkit-based browsers on OSX
"encodeUTF8": function(input) {
//return unescape(encodeURIComponent(input)); //may or may not work
var output = '';
for (var n = 0; n < input.length; n++){
var c = input.charCodeAt(n);
if (c < 128) {
output += input[n];
}
else if (c > 127) {
if (c < 2048){
output += String.fromCharCode((c >> 6) | 192);
}
else {
output += String.fromCharCode((c >> 12) | 224) + String.fromCharCode((c >> 6) & 63 | 128);
}
output += String.fromCharCode((c & 63) | 128);
}
}
return output;
},
"convertToXMLReferences": function(input) {
var output = '';
for (var n = 0; n < input.length; n++){
var c = input.charCodeAt(n);
if (c < 128) {
output += input[n];
}
else if(c > 127) {
output += ("&#" + c + ";");
}
}
return output;
},
"rectsIntersect": function(r1, r2) {
return r2.x < (r1.x+r1.width) &&
(r2.x+r2.width) > r1.x &&
r2.y < (r1.y+r1.height) &&
(r2.y+r2.height) > r1.y;
},
// found this function http://groups.google.com/group/jquery-dev/browse_thread/thread/c6d11387c580a77f
"text2xml": function(sXML) {
// NOTE: I'd like to use jQuery for this, but jQuery makes all tags uppercase
//return $(xml)[0];
var out;
try{
var dXML = ($.browser.msie)?new ActiveXObject("Microsoft.XMLDOM"):new DOMParser();
dXML.async = false;
} catch(e){
throw new Error("XML Parser could not be instantiated");
};
try{
if($.browser.msie) out = (dXML.loadXML(sXML))?dXML:false;
else out = dXML.parseFromString(sXML, "text/xml");
}
catch(e){ throw new Error("Error parsing XML string"); };
return out;
}
};