2010-06-03 14:13:37 +02:00
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/*
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* ext-markers.js
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*
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* Licensed under the Apache License, Version 2
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*
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* Copyright(c) 2010 Will Schleter
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* based on ext-arrows.js by Copyright(c) 2010 Alexis Deveria
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*
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* This extension provides for the addition of markers to the either end
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* or the middle of a line, polyline, path, polygon.
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*
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* Markers may be either a graphic or arbitary text
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*
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* to simplify the coding and make the implementation as robust as possible,
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* markers are not shared - every object has its own set of markers.
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* this relationship is maintained by a naming convention between the
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* ids of the markers and the ids of the object
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*
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* The following restrictions exist for simplicty of use and programming
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* objects and their markers to have the same color
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* marker size is fixed
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* text marker font, size, and attributes are fixed
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* an application specific attribute - se_type - is added to each marker element
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* to store the type of marker
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*
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* TODO:
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* remove some of the restrictions above
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* add option for keeping text aligned to horizontal
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* add support for dimension extension lines
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*
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*/
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svgEditor.addExtension("Markers", function(S) {
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var svgcontent = S.svgcontent,
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addElem = S.addSvgElementFromJson,
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selElems;
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var mtypes = ['start','mid','end'];
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var marker_prefix = 'se_marker_';
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var id_prefix = 'mkr_';
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// note - to add additional marker types add them below with a unique id
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// and add the associated icon(s) to marker-icons.svg
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// the geometry is normallized to a 100x100 box with the origin at lower left
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// Safari did not like negative values for low left of viewBox
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// remember that the coordinate system has +y downward
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var marker_types = {
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nomarker: {},
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leftarrow:
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{element:'path', attr:{d:'M0,50 L100,90 L70,50 L100,10 Z'}},
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rightarrow:
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{element:'path', attr:{d:'M100,50 L0,90 L30,50 L0,10 Z'}},
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textmarker:
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{element:'text', attr: {x:0, y:0,'stroke-width':0,'stroke':'none','font-size':75,'font-family':'serif','text-anchor':'left',
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'xml:space': 'preserve'}},
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forwardslash:
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{element:'path', attr:{d:'M30,100 L70,0'}},
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reverseslash:
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{element:'path', attr:{d:'M30,0 L70,100'}},
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verticalslash:
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{element:'path', attr:{d:'M50,0 L50,100'}},
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box:
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{element:'path', attr:{d:'M20,20 L20,80 L80,80 L80,20 Z'}},
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star:
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{element:'path', attr:{d:'M10,30 L90,30 L20,90 L50,10 L80,90 Z'}},
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xmark:
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{element:'path', attr:{d:'M20,80 L80,20 M80,80 L20,20'}},
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triangle:
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{element:'path', attr:{d:'M10,80 L50,20 L80,80 Z'}},
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2010-06-17 05:46:12 +02:00
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mcircle:
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2010-06-03 14:13:37 +02:00
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{element:'circle', attr:{r:30, cx:50, cy:50}},
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}
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var lang_list = {
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"en":[
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{id: "start_marker_list", title: "Select start marker type" },
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{id: "mid_marker_list", title: "Select mid marker type" },
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{id: "end_marker_list", title: "Select end marker type" },
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{id: "nomarker", title: "No Marker" },
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{id: "leftarrow", title: "Left Arrow" },
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{id: "rightarrow", title: "Right Arrow" },
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{id: "textmarker", title: "Text Marker" },
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{id: "forwardslash", title: "Forward Slash" },
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{id: "reverseslash", title: "Reverse Slash" },
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{id: "verticalslash", title: "Vertical Slash" },
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{id: "box", title: "Box" },
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{id: "star", title: "Star" },
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{id: "xmark", title: "X" },
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{id: "triangle", title: "Triangle" },
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{id: "mcircle", title: "Circle" },
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{id: "leftarrow_o", title: "Open Left Arrow" },
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{id: "rightarrow_o", title: "Open Right Arrow" },
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{id: "box_o", title: "Open Box" },
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{id: "star_o", title: "Open Star" },
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{id: "triangle_o", title: "Open Triangle" },
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{id: "mcircle_o", title: "Open Circle" },
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2010-06-03 14:13:37 +02:00
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]
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};
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// duplicate shapes to support unfilled (open) marker types with an _o suffix
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2010-06-17 05:46:12 +02:00
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$.each(['leftarrow','rightarrow','box','star','mcircle','triangle'],function(i,v) {
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marker_types[v+'_o'] = marker_types[v];
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});
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// elem = a graphic element will have an attribute like marker-start
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// attr - marker-start, marker-mid, or marker-end
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// returns the marker element that is linked to the graphic element
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function getLinked(elem, attr) {
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var str = elem.getAttribute(attr);
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if(!str) return null;
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var m = str.match(/\(\#(.*)\)/);
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if(!m || m.length !== 2) {
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return null;
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}
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return S.getElem(m[1]);
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}
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//toggles context tool panel off/on
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//sets the controls with the selected element's settings
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function showPanel(on) {
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$('#marker_panel').toggle(on);
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if(on) {
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var el = selElems[0];
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var val;
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var ci;
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$.each(mtypes, function(i, pos) {
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var m=getLinked(el,"marker-"+pos);
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var txtbox = $('#'+pos+'_marker');
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if (!m) {
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val='\\nomarker';
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ci=val;
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txtbox.hide() // hide text box
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} else {
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if (!m.attributes.se_type) return; // not created by this extension
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val='\\'+m.attributes.se_type.textContent;
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ci=val;
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if (val=='\\textmarker') {
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val=m.lastChild.textContent;
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//txtbox.show(); // show text box
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} else {
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txtbox.hide() // hide text box
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}
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}
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txtbox.val(val);
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setIcon(pos,ci);
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})
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}
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}
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function addMarker(id, val) {
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var txt_box_bg = '#ffffff';
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var txt_box_border = 'none';
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var txt_box_stroke_width = 0;
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var marker = S.getElem(id);
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if (marker) return;
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if (val=='' || val=='\\nomarker') return;
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var el = selElems[0];
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var color = el.getAttribute('stroke');
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//NOTE: Safari didn't like a negative value in viewBox
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//so we use a standardized 0 0 100 100
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//with 50 50 being mapped to the marker position
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var refX = 50;
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var refY = 50;
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var viewBox = "0 0 100 100";
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var markerWidth = 5;
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var markerHeight = 5;
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var strokeWidth = 10;
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if (val.substr(0,1)=='\\') se_type=val.substr(1);
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else se_type='textmarker';
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if (!marker_types[se_type]) return; // an unknown type!
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// create a generic marker
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marker = addElem({
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"element": "marker",
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"attr": {
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"id": id,
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"markerUnits": "strokeWidth",
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"orient": "auto",
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"style": "pointer-events:none",
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"se_type": se_type
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}
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});
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if (se_type!='textmarker') {
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var mel = addElem(marker_types[se_type]);
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var fillcolor = color;
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if (se_type.substr(-2)=='_o') fillcolor='none';
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mel.setAttribute('fill',fillcolor);
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mel.setAttribute('stroke',color);
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mel.setAttribute('stroke-width',strokeWidth);
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marker.appendChild(mel);
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} else {
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var text = addElem(marker_types[se_type]);
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// have to add text to get bounding box
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text.textContent = val;
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var tb=text.getBBox();
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//alert( tb.x + " " + tb.y + " " + tb.width + " " + tb.height);
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var pad=1;
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var bb = tb;
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bb.x = 0;
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bb.y = 0;
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bb.width += pad*2;
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bb.height += pad*2;
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// shift text according to its size
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text.setAttribute('x', pad);
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text.setAttribute('y', bb.height - pad - tb.height/4); // kludge?
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text.setAttribute('fill',color);
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refX = bb.width/2+pad;
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refY = bb.height/2+pad;
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viewBox = bb.x + " " + bb.y + " " + bb.width + " " + bb.height;
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markerWidth =bb.width/10;
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markerHeight = bb.height/10;
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var box = addElem({
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"element": "rect",
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"attr": {
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"x": bb.x,
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"y": bb.y,
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"width": bb.width,
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"height": bb.height,
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"fill": txt_box_bg,
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"stroke": txt_box_border,
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"stroke-width": txt_box_stroke_width
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}
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});
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marker.setAttribute("orient",0);
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marker.appendChild(box);
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marker.appendChild(text);
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}
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marker.setAttribute("viewBox",viewBox);
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marker.setAttribute("markerWidth", markerWidth);
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marker.setAttribute("markerHeight", markerHeight);
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marker.setAttribute("refX", refX);
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marker.setAttribute("refY", refY);
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S.findDefs().appendChild(marker);
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return marker;
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}
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function setMarker() {
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var poslist={'start_marker':'start','mid_marker':'mid','end_marker':'end'};
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var pos = poslist[this.id];
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var marker_name = 'marker-'+pos;
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var val = this.value;
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var el = selElems[0];
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var marker = getLinked(el, marker_name);
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if (marker) $(marker).remove();
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el.removeAttribute(marker_name);
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if (val=='') val='\\nomarker';
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if (val=='\\nomarker') {
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setIcon(pos,val);
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S.call("changed", selElems);
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return;
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}
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// Set marker on element
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var id = marker_prefix + pos + '_' + el.id;
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addMarker(id, val);
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svgCanvas.changeSelectedAttribute(marker_name, "url(#" + id + ")");
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if (el.tagName == "line" && pos=='mid') el=convertline(el);
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S.call("changed", selElems);
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setIcon(pos,val);
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}
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function convertline(elem) {
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// this routine came from the connectors extension
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// it is needed because midpoint markers don't work with line elements
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if (!(elem.tagName == "line")) return elem;
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// Convert to polyline to accept mid-arrow
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var x1 = elem.getAttribute('x1')-0;
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var x2 = elem.getAttribute('x2')-0;
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var y1 = elem.getAttribute('y1')-0;
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var y2 = elem.getAttribute('y2')-0;
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var id = elem.id;
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var mid_pt = (' '+((x1+x2)/2)+','+((y1+y2)/2) + ' ');
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var pline = addElem({
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"element": "polyline",
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"attr": {
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"points": (x1+','+y1+ mid_pt +x2+','+y2),
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"stroke": elem.getAttribute('stroke'),
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"stroke-width": elem.getAttribute('stroke-width'),
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"fill": "none",
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"opacity": elem.getAttribute('opacity') || 1
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}
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});
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$.each(mtypes, function(i, pos) { // get any existing marker definitions
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var nam = 'marker-'+pos;
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var m = elem.getAttribute(nam);
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if (m) pline.setAttribute(nam,elem.getAttribute(nam));
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});
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2010-06-17 05:46:12 +02:00
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var batchCmd = new S.BatchCommand();
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batchCmd.addSubCommand(new S.RemoveElementCommand(elem, elem.parentNode));
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batchCmd.addSubCommand(new S.InsertElementCommand(pline));
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2010-06-03 14:13:37 +02:00
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$(elem).after(pline).remove();
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svgCanvas.clearSelection();
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pline.id = id;
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svgCanvas.addToSelection([pline]);
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2010-06-17 05:46:12 +02:00
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S.addCommandToHistory(batchCmd);
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return pline;
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}
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// called when the main system modifies an object
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// this routine changes the associated markers to be the same color
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function colorChanged(elem) {
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var color = elem.getAttribute('stroke');
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$.each(mtypes, function(i, pos) {
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var marker = getLinked(elem, 'marker-'+pos);
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if (!marker) return;
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if (!marker.attributes.se_type) return; //not created by this extension
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var ch = marker.lastElementChild;
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if (!ch) return;
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var curfill = ch.getAttribute("fill");
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var curstroke = ch.getAttribute("stroke")
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if (curfill && curfill!='none') ch.setAttribute("fill",color);
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if (curstroke && curstroke!='none') ch.setAttribute("stroke",color);
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});
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}
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// called when the main system creates or modifies an object
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// primary purpose is create new markers for cloned objects
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function updateReferences(el) {
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$.each(mtypes, function (i,pos) {
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var id = marker_prefix + pos + '_' + el.id;
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var marker_name = 'marker-'+pos;
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var marker = getLinked(el, marker_name);
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if (!marker || !marker.attributes.se_type) return; //not created by this extension
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var url = el.getAttribute(marker_name);
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if (url) {
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var len = el.id.length;
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var linkid = url.substr(-len-1,len);
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if (el.id != linkid) {
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var val = $('#'+pos+'_marker').attr('value');
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|
addMarker(id, val);
|
|
|
|
svgCanvas.changeSelectedAttribute(marker_name, "url(#" + id + ")");
|
|
|
|
if (el.tagName == "line" && pos=='mid') el=convertline(el);
|
|
|
|
S.call("changed", selElems);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
});
|
|
|
|
}
|
|
|
|
|
|
|
|
// simulate a change event a text box that stores the current element's marker type
|
|
|
|
function triggerTextEntry(pos,val) {
|
|
|
|
$('#'+pos+'_marker').val(val);
|
|
|
|
$('#'+pos+'_marker').change();
|
|
|
|
var txtbox = $('#'+pos+'_marker');
|
|
|
|
//if (val.substr(0,1)=='\\') txtbox.hide();
|
|
|
|
//else txtbox.show();
|
|
|
|
}
|
|
|
|
|
|
|
|
function setIcon(pos,id) {
|
|
|
|
if (id.substr(0,1)!='\\') id='\\textmarker'
|
|
|
|
var ci = '#'+id_prefix+pos+'_'+id.substr(1);
|
|
|
|
svgEditor.setIcon('#cur_' + pos +'_marker_list', $(ci).children());
|
|
|
|
$(ci).addClass('current').siblings().removeClass('current');
|
|
|
|
}
|
|
|
|
|
|
|
|
function setMarkerSet(obj) {
|
|
|
|
var parts = this.id.split('_');
|
|
|
|
var set = parts[2];
|
|
|
|
switch (set) {
|
|
|
|
case 'off':
|
|
|
|
triggerTextEntry('start','\\nomarker');
|
|
|
|
triggerTextEntry('mid','\\nomarker');
|
|
|
|
triggerTextEntry('end','\\nomarker');
|
|
|
|
break;
|
|
|
|
case 'dimension':
|
|
|
|
triggerTextEntry('start','\\leftarrow');
|
|
|
|
triggerTextEntry('end','\\rightarrow');
|
|
|
|
showTextPrompt('mid');
|
|
|
|
break;
|
|
|
|
case 'label':
|
|
|
|
triggerTextEntry('mid','\\nomarker');
|
|
|
|
triggerTextEntry('end','\\rightarrow');
|
|
|
|
showTextPrompt('start');
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
function showTextPrompt(pos) {
|
|
|
|
var def = $('#'+pos+'_marker').val();
|
|
|
|
if (def.substr(0,1)=='\\') def='';
|
|
|
|
$.prompt('Enter text for ' + pos + ' marker', def , function(txt) { if (txt) triggerTextEntry(pos,txt); });
|
|
|
|
}
|
|
|
|
|
|
|
|
// callback function for a toolbar button click
|
|
|
|
function setArrowFromButton(obj) {
|
|
|
|
|
|
|
|
var parts = this.id.split('_');
|
|
|
|
var pos = parts[1];
|
|
|
|
var val = parts[2];
|
|
|
|
if (parts[3]) val+='_'+parts[3];
|
|
|
|
|
|
|
|
if (val!='textmarker') {
|
|
|
|
triggerTextEntry(pos,'\\'+val);
|
|
|
|
} else {
|
|
|
|
showTextPrompt(pos);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
function getTitle(lang,id) {
|
|
|
|
var list = lang_list[lang];
|
|
|
|
for (var i in list) {
|
|
|
|
if (list[i].id==id) return list[i].title;
|
|
|
|
}
|
|
|
|
return id;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// build the toolbar button array from the marker definitions
|
|
|
|
// TODO: need to incorporate language specific titles
|
|
|
|
function buildButtonList() {
|
|
|
|
var buttons=[];
|
|
|
|
var i=0;
|
|
|
|
/*
|
|
|
|
buttons.push({
|
|
|
|
id:id_prefix + 'markers_off',
|
|
|
|
title:'Turn off all markers',
|
|
|
|
type:'context',
|
|
|
|
events: { 'click': setMarkerSet },
|
|
|
|
panel: 'marker_panel'
|
|
|
|
});
|
|
|
|
buttons.push({
|
|
|
|
id:id_prefix + 'markers_dimension',
|
|
|
|
title:'Dimension',
|
|
|
|
type:'context',
|
|
|
|
events: { 'click': setMarkerSet },
|
|
|
|
panel: 'marker_panel'
|
|
|
|
});
|
|
|
|
buttons.push({
|
|
|
|
id:id_prefix + 'markers_label',
|
|
|
|
title:'Label',
|
|
|
|
type:'context',
|
|
|
|
events: { 'click': setMarkerSet },
|
|
|
|
panel: 'marker_panel'
|
|
|
|
});
|
|
|
|
*/
|
|
|
|
$.each(mtypes,function(k,pos) {
|
|
|
|
var listname = pos + "_marker_list";
|
|
|
|
var def = true;
|
|
|
|
$.each(marker_types,function(id,v) {
|
|
|
|
var title = getTitle('en',id);
|
|
|
|
buttons.push({
|
|
|
|
id:id_prefix + pos + "_" + id,
|
|
|
|
svgicon:id,
|
|
|
|
title:title,
|
|
|
|
type:'context',
|
|
|
|
events: { 'click': setArrowFromButton },
|
|
|
|
panel:'marker_panel',
|
|
|
|
list: listname,
|
|
|
|
isDefault: def
|
|
|
|
});
|
|
|
|
def = false;
|
|
|
|
});
|
|
|
|
});
|
|
|
|
return buttons;
|
|
|
|
}
|
|
|
|
|
|
|
|
return {
|
|
|
|
name: "Markers",
|
|
|
|
svgicons: "extensions/markers-icons.xml",
|
|
|
|
buttons: buildButtonList(),
|
|
|
|
context_tools: [
|
|
|
|
{
|
|
|
|
type: "input",
|
|
|
|
panel: "marker_panel",
|
|
|
|
title: "Start marker",
|
|
|
|
id: "start_marker",
|
|
|
|
label: "s",
|
|
|
|
size: 3,
|
|
|
|
events: { change: setMarker }
|
|
|
|
},{
|
|
|
|
type: "button-select",
|
|
|
|
panel: "marker_panel",
|
|
|
|
title: getTitle('en','start_marker_list'),
|
|
|
|
id: "start_marker_list",
|
2010-06-17 05:46:12 +02:00
|
|
|
colnum: 3,
|
2010-06-03 14:13:37 +02:00
|
|
|
events: { change: setArrowFromButton }
|
|
|
|
},{
|
|
|
|
type: "input",
|
|
|
|
panel: "marker_panel",
|
|
|
|
title: "Middle marker",
|
|
|
|
id: "mid_marker",
|
|
|
|
label: "m",
|
|
|
|
defval: "",
|
|
|
|
size: 3,
|
|
|
|
events: { change: setMarker }
|
|
|
|
},{
|
|
|
|
type: "button-select",
|
|
|
|
panel: "marker_panel",
|
|
|
|
title: getTitle('en','mid_marker_list'),
|
|
|
|
id: "mid_marker_list",
|
2010-06-17 05:46:12 +02:00
|
|
|
colnum: 3,
|
2010-06-03 14:13:37 +02:00
|
|
|
events: { change: setArrowFromButton }
|
|
|
|
},{
|
|
|
|
type: "input",
|
|
|
|
panel: "marker_panel",
|
|
|
|
title: "End marker",
|
|
|
|
id: "end_marker",
|
|
|
|
label: "e",
|
|
|
|
size: 3,
|
|
|
|
events: { change: setMarker }
|
|
|
|
},{
|
|
|
|
type: "button-select",
|
|
|
|
panel: "marker_panel",
|
|
|
|
title: getTitle('en','end_marker_list'),
|
|
|
|
id: "end_marker_list",
|
2010-06-17 05:46:12 +02:00
|
|
|
colnum: 3,
|
2010-06-03 14:13:37 +02:00
|
|
|
events: { change: setArrowFromButton }
|
|
|
|
} ],
|
|
|
|
callback: function() {
|
2010-06-17 05:46:12 +02:00
|
|
|
$('#marker_panel').addClass('toolset').hide();
|
|
|
|
|
2010-06-03 14:13:37 +02:00
|
|
|
},
|
|
|
|
addLangData: function(lang) {
|
|
|
|
return { data: lang_list[lang] };
|
|
|
|
},
|
|
|
|
|
|
|
|
selectedChanged: function(opts) {
|
|
|
|
// Use this to update the current selected elements
|
|
|
|
//console.log('selectChanged',opts);
|
|
|
|
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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
},
|
|
|
|
|
|
|
|
elementChanged: function(opts) {
|
|
|
|
//console.log('elementChanged',opts);
|
|
|
|
var elem = opts.elems[0];
|
|
|
|
if(elem && (
|
|
|
|
elem.getAttribute("marker-start") ||
|
|
|
|
elem.getAttribute("marker-mid") ||
|
|
|
|
elem.getAttribute("marker-end")
|
|
|
|
)) {
|
|
|
|
colorChanged(elem);
|
|
|
|
updateReferences(elem);
|
|
|
|
}
|
|
|
|
changing_flag = false;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
});
|