instiki/public/svg-edit/extensions/ext-arrows.js
2010-02-05 23:17:34 -06:00

188 lines
3.7 KiB
JavaScript

/*
* ext-arrows.js
*
* Licensed under the Apache License, Version 2
*
* Copyright(c) 2010 Alexis Deveria
*
*/
$(function() {
svgCanvas.addExtension("Arrows", function(S) {
var svgcontent = S.svgcontent,
addElem = S.addSvgElementFromJson,
selElems;
var lang_list = {
"en":[
{"id": "arrow_none", "textContent": "No arrow" }
],
"fr":[
{"id": "arrow_none", "textContent": "Sans flèche" }
]
};
function showPanel(on) {
$('#arrow_panel').toggle(on);
if(on) {
var el = selElems[0];
var end = el.getAttribute("marker-end");
var start = el.getAttribute("marker-start");
var mid = el.getAttribute("marker-mid");
var val;
if(end && start) {
val = "both";
} else if(end) {
val = "end";
} else if(start) {
val = "start";
} else if(mid) {
val = "mid";
if(mid.indexOf("bk") != -1) {
val = "mid_bk";
}
}
if(!start && !mid && !end) {
val = "none";
}
$("#arrow_list").val(val);
}
}
function resetMarker() {
var el = selElems[0];
el.removeAttribute("marker-start");
el.removeAttribute("marker-mid");
el.removeAttribute("marker-end");
}
function addMarker(id, type) {
// TODO: Make marker (or use?) per arrow type, since refX can be different
var marker = S.getElem(id);
var pathdata = {
se_arrow_fw: {d:"m0,0l10,5l-10,5l5,-5l-5,-5z", refx:8},
se_arrow_bk: {d:"m10,0l-10,5l10,5l-5,-5l5,-5z", refx:2}
}
var data = pathdata[id];
if(type == "mid") {
data.refx = 5;
}
if(!marker) {
marker = addElem({
"element": "marker",
"attr": {
"viewBox": "0 0 10 10",
"id": id,
"refY": 5,
"markerUnits": "strokeWidth",
"markerWidth": 5,
"markerHeight": 5,
"orient": "auto"
}
});
var arrow = addElem({
"element": "path",
"attr": {
"d": data.d,
"fill": "#000"
}
});
marker.appendChild(arrow);
S.findDefs().appendChild(marker);
}
marker.setAttribute('refX', data.refx);
}
function setArrow() {
var type = this.value;
resetMarker();
if(type == "none") {
return;
}
var fw_id = "se_arrow_fw";
var bk_id = "se_arrow_bk";
// Set marker on element
var id = fw_id;
if(type == "mid_bk") {
type = "mid";
id = bk_id;
} else if(type == "both") {
addMarker(bk_id, type);
svgCanvas.changeSelectedAttribute("marker-start", "url(#" + bk_id + ")");
type = "end";
id = fw_id;
} else if (type == "start") {
id = bk_id;
}
addMarker(id, type);
svgCanvas.changeSelectedAttribute("marker-"+type, "url(#" + id + ")");
S.call("changed", selElems);
}
return {
name: "Arrows",
context_tools: [{
type: "select",
panel: "arrow_panel",
title: "Select arrow type",
id: "arrow_list",
options: {
none: "No arrow",
end: "---->",
start: "<----",
both: "<--->",
mid: "-->--",
mid_bk: "--<--"
},
defval: "none",
events: {
change: setArrow
}
}],
callback: function() {
$('#arrow_panel').hide();
},
addLangData: function(lang) {
return {
data: lang_list[lang]
};
},
selectedChanged: function(opts) {
// Use this to update the current selected elements
selElems = opts.elems;
var i = selElems.length;
var marker_elems = ['line','path','polyline','polygon'];
while(i--) {
var elem = selElems[i];
if(elem && $.inArray(elem.tagName, marker_elems) != -1) {
if(opts.selectedElement && !opts.multiselected) {
showPanel(true);
} else {
showPanel(false);
}
} else {
showPanel(false);
}
}
}
};
});
});