296 lines
9.8 KiB
JavaScript
296 lines
9.8 KiB
JavaScript
/*globals svgEditor, svgCanvas, svgedit, $*/
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/*jslint vars: true, eqeq: true, todo: true */
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/*
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* ext-polygon.js
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*
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*
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* Copyright(c) 2010 CloudCanvas, Inc.
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* All rights reserved
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*
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*/
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svgEditor.addExtension("polygon", function(S) {'use strict';
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var // NS = svgedit.NS,
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// svgcontent = S.svgcontent,
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// addElem = S.addSvgElementFromJson,
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selElems,
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editingitex = false,
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// svgdoc = S.svgroot.parentNode.ownerDocument,
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// newFOG, newFOGParent, newDef, newImageName, newMaskID, modeChangeG,
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// edg = 0,
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// undoCommand = "Not image";
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started, newFO;
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// var ccZoom;
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// var wEl, hEl;
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// var wOffset, hOffset;
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// var ccRBG;
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var ccRgbEl;
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// var ccOpacity;
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// var brushW, brushH;
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var shape;
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// var ccDebug = document.getElementById('debugpanel');
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/* var properlySourceSizeTextArea = function(){
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// TODO: remove magic numbers here and get values from CSS
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var height = $('#svg_source_container').height() - 80;
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$('#svg_source_textarea').css('height', height);
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}; */
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function showPanel(on){
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var fc_rules = $('#fc_rules');
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if (!fc_rules.length) {
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fc_rules = $('<style id="fc_rules"><\/style>').appendTo('head');
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}
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fc_rules.text(!on ? "" : " #tool_topath { display: none !important; }");
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$('#polygon_panel').toggle(on);
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}
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/*
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function toggleSourceButtons(on){
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$('#tool_source_save, #tool_source_cancel').toggle(!on);
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$('#polygon_save, #polygon_cancel').toggle(on);
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}
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*/
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function setAttr(attr, val){
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svgCanvas.changeSelectedAttribute(attr, val);
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S.call("changed", selElems);
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}
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function cot(n){
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return 1 / Math.tan(n);
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}
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function sec(n){
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return 1 / Math.cos(n);
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}
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/**
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* Obtained from http://code.google.com/p/passenger-top/source/browse/instiki/public/svg-edit/editor/extensions/ext-itex.js?r=3
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* This function sets the content of of the currently-selected foreignObject element,
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* based on the itex contained in string.
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* @param {string} tex The itex text.
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* @returns This function returns false if the set was unsuccessful, true otherwise.
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*/
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/*
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function setItexString(tex) {
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var mathns = 'http://www.w3.org/1998/Math/MathML',
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xmlnsns = 'http://www.w3.org/2000/xmlns/',
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ajaxEndpoint = '../../itex';
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var elt = selElems[0];
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try {
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var math = svgdoc.createElementNS(mathns, 'math');
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math.setAttributeNS(xmlnsns, 'xmlns', mathns);
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math.setAttribute('display', 'inline');
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var semantics = document.createElementNS(mathns, 'semantics');
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var annotation = document.createElementNS(mathns, 'annotation');
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annotation.setAttribute('encoding', 'application/x-tex');
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annotation.textContent = tex;
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var mrow = document.createElementNS(mathns, 'mrow');
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semantics.appendChild(mrow);
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semantics.appendChild(annotation);
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math.appendChild(semantics);
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// make an AJAX request to the server, to get the MathML
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$.post(ajaxEndpoint, {'tex': tex, 'display': 'inline'}, function(data){
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var children = data.documentElement.childNodes;
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while (children.length > 0) {
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mrow.appendChild(svgdoc.adoptNode(children[0], true));
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}
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S.sanitizeSvg(math);
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S.call("changed", [elt]);
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});
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elt.replaceChild(math, elt.firstChild);
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S.call("changed", [elt]);
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svgCanvas.clearSelection();
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} catch(e) {
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console.log(e);
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return false;
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}
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return true;
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}
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*/
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return {
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name: "polygon",
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svgicons: svgEditor.curConfig.extPath + "polygon-icons.svg",
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buttons: [{
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id: "tool_polygon",
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type: "mode",
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title: "Polygon Tool",
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position: 11,
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events: {
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'click': function(){
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svgCanvas.setMode('polygon');
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showPanel(true);
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}
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}
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}],
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context_tools: [{
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type: "input",
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panel: "polygon_panel",
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title: "Number of Sides",
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id: "polySides",
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label: "sides",
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size: 3,
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defval: 5,
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events: {
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change: function(){
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setAttr('sides', this.value);
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}
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}
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}],
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callback: function(){
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$('#polygon_panel').hide();
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var endChanges = function(){
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};
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// TODO: Needs to be done after orig icon loads
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setTimeout(function(){
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// Create source save/cancel buttons
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var save = $('#tool_source_save').clone().hide().attr('id', 'polygon_save').unbind().appendTo("#tool_source_back").click(function(){
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if (!editingitex) {
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return;
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}
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// Todo: Uncomment the setItexString() function above and handle ajaxEndpoint?
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if (!setItexString($('#svg_source_textarea').val())) {
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$.confirm("Errors found. Revert to original?", function(ok){
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if (!ok) {
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return false;
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}
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endChanges();
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});
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}
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else {
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endChanges();
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}
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// setSelectMode();
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});
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var cancel = $('#tool_source_cancel').clone().hide().attr('id', 'polygon_cancel').unbind().appendTo("#tool_source_back").click(function(){
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endChanges();
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});
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}, 3000);
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},
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mouseDown: function(opts){
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// var e = opts.event;
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var rgb = svgCanvas.getColor("fill");
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ccRgbEl = rgb.substring(1, rgb.length);
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var sRgb = svgCanvas.getColor("stroke");
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// ccSRgbEl = sRgb.substring(1, rgb.length);
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var sWidth = svgCanvas.getStrokeWidth();
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if (svgCanvas.getMode() == "polygon") {
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started = true;
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newFO = S.addSvgElementFromJson({
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"element": "polygon",
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"attr": {
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"cx": opts.start_x,
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"cy": opts.start_y,
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"id": S.getNextId(),
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"shape": "regularPoly",
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"sides": document.getElementById("polySides").value,
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"orient": "x",
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"edge": 0,
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"fill": rgb,
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"strokecolor": sRgb,
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"strokeWidth": sWidth
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}
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});
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return {
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started: true
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};
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}
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},
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mouseMove: function(opts){
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if (!started) {
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return;
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}
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if (svgCanvas.getMode() == "polygon") {
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// var e = opts.event;
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var x = opts.mouse_x;
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var y = opts.mouse_y;
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var c = $(newFO).attr(["cx", "cy", "sides", "orient", "fill", "strokecolor", "strokeWidth"]);
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var cx = c.cx, cy = c.cy, fill = c.fill, strokecolor = c.strokecolor, strokewidth = c.strokeWidth, sides = c.sides,
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// orient = c.orient,
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edg = (Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy))) / 1.5;
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newFO.setAttributeNS(null, "edge", edg);
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var inradius = (edg / 2) * cot(Math.PI / sides);
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var circumradius = inradius * sec(Math.PI / sides);
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var points = '';
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var s;
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for (s = 0; sides >= s; s++) {
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var angle = 2.0 * Math.PI * s / sides;
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x = (circumradius * Math.cos(angle)) + cx;
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y = (circumradius * Math.sin(angle)) + cy;
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points += x + ',' + y + ' ';
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}
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//var poly = newFO.createElementNS(NS.SVG, 'polygon');
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newFO.setAttributeNS(null, 'points', points);
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newFO.setAttributeNS(null, 'fill', fill);
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newFO.setAttributeNS(null, 'stroke', strokecolor);
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newFO.setAttributeNS(null, 'stroke-width', strokewidth);
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// newFO.setAttributeNS(null, 'transform', "rotate(-90)");
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shape = newFO.getAttributeNS(null, 'shape');
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//newFO.appendChild(poly);
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//DrawPoly(cx, cy, sides, edg, orient);
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return {
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started: true
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};
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}
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},
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mouseUp: function(opts){
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if (svgCanvas.getMode() == "polygon") {
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var attrs = $(newFO).attr("edge");
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var keep = (attrs.edge != 0);
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// svgCanvas.addToSelection([newFO], true);
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return {
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keep: keep,
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element: newFO
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};
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}
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},
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selectedChanged: function(opts){
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// Use this to update the current selected elements
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selElems = opts.elems;
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var i = selElems.length;
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while (i--) {
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var elem = selElems[i];
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if (elem && elem.getAttributeNS(null, 'shape') === 'regularPoly') {
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if (opts.selectedElement && !opts.multiselected) {
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$('#polySides').val(elem.getAttribute("sides"));
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showPanel(true);
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}
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else {
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showPanel(false);
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}
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}
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else {
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showPanel(false);
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}
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}
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},
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elementChanged: function(opts){
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// var elem = opts.elems[0];
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}
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};
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});
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