/*
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* ext-eyedropper.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 Jeff Schiller
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*
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*/
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// Dependencies:
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// 1) jQuery
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// 2) history.js
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// 3) svg_editor.js
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// 4) svgcanvas.js
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methodDraw.addExtension("eyedropper", function(S) {
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var svgcontent = S.svgcontent,
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svgns = "http://www.w3.org/2000/svg",
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svgdoc = S.svgroot.parentNode.ownerDocument,
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svgCanvas = methodDraw.canvas,
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ChangeElementCommand = svgedit.history.ChangeElementCommand,
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addToHistory = function(cmd) { svgCanvas.undoMgr.addCommandToHistory(cmd); },
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currentStyle = {fillPaint: "red", fillOpacity: 1.0,
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strokePaint: "black", strokeOpacity: 1.0,
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strokeWidth: 5, strokeDashArray: null,
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opacity: 1.0,
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strokeLinecap: 'butt',
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strokeLinejoin: 'miter'
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};
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function getStyle(opts) {
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// if we are in eyedropper mode, we don't want to disable the eye-dropper tool
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var mode = svgCanvas.getMode();
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if (mode == "eyedropper") return;
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var tool = $('#tool_eyedropper');
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}
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var getPaint = function(color, opac, type) {
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// update the editor's fill paint
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var opts = null;
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if (color.indexOf("url(#") === 0) {
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var refElem = svgCanvas.getRefElem(color);
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if(refElem) {
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refElem = refElem.cloneNode(true);
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} else {
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refElem = $("#" + type + "_color defs *")[0];
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}
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opts = { alpha: opac };
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opts[refElem.tagName] = refElem;
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}
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else if (color.indexOf("#") === 0) {
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opts = {
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alpha: opac,
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solidColor: color.substr(1)
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};
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}
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else {
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opts = {
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alpha: opac,
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solidColor: 'none'
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};
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}
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return new $.jGraduate.Paint(opts);
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};
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return {
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name: "eyedropper",
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svgicons: "extensions/eyedropper-icon.xml",
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buttons: [{
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id: "tool_eyedropper",
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type: "mode",
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title: "吸管工具",
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position: 8,
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key: "I",
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icon: "extensions/eyedropper.png",
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events: {
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"click": function() {
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svgCanvas.setMode("eyedropper");
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}
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}
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}],
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mouseDown: function(opts) {
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var mode = svgCanvas.getMode();
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var e = opts.event;
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var target = (e.target.id === "svgroot") ? document.getElementById('canvas_background') : e.target;
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if (mode == "eyedropper" && target) {
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currentStyle.fillPaint = target.getAttribute("fill") || "white";
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currentStyle.fillOpacity = target.getAttribute("fill-opacity") || 1.0;
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currentStyle.strokePaint = target.getAttribute("stroke") || 'none';
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currentStyle.strokeOpacity = target.getAttribute("stroke-opacity") || 1.0;
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currentStyle.strokeWidth = target.getAttribute("stroke-width");
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currentStyle.strokeDashArray = target.getAttribute("stroke-dasharray");
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currentStyle.strokeLinecap = target.getAttribute("stroke-linecap");
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currentStyle.strokeLinejoin = target.getAttribute("stroke-linejoin");
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currentStyle.opacity = target.getAttribute("opacity") || 1.0;
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opts.selectedElements = opts.selectedElements.filter(Boolean)
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if (!opts.selectedElements.length) { //nothing selected, just update colors
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var fill = getPaint(currentStyle.fillPaint, currentStyle.fillOpacity*100, "fill");
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var stroke = getPaint(currentStyle.strokePaint, currentStyle.strokeOpacity*100, "stroke");
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methodDraw.paintBox.fill.setPaint(fill)
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methodDraw.paintBox.stroke.setPaint(stroke)
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return;
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}
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if ($.inArray(opts.selectedElements.nodeName, ['g', 'use']) == -1) {
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var changes = {};
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var change = function(elem, attrname, newvalue) {
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changes[attrname] = elem.getAttribute(attrname);
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elem.setAttribute(attrname, newvalue);
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};
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var batchCmd = new S.BatchCommand();
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opts.selectedElements.forEach(function(element){
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if (currentStyle.fillPaint) change(element, "fill", currentStyle.fillPaint);
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if (currentStyle.fillOpacity) change(element, "fill-opacity", currentStyle.fillOpacity);
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if (currentStyle.strokePaint) change(element, "stroke", currentStyle.strokePaint);
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if (currentStyle.strokeOpacity) change(element, "stroke-opacity", currentStyle.strokeOpacity);
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if (currentStyle.strokeWidth) change(element, "stroke-width", currentStyle.strokeWidth);
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if (currentStyle.strokeDashArray) change(element, "stroke-dasharray", currentStyle.strokeDashArray);
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if (currentStyle.opacity) change(element, "opacity", currentStyle.opacity);
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if (currentStyle.strokeLinecap) change(element, "stroke-linecap", currentStyle.strokeLinecap);
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if (currentStyle.strokeLinejoin) change(element, "stroke-linejoin", currentStyle.strokeLinejoin);
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batchCmd.addSubCommand(new ChangeElementCommand(element, changes));
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changes = {};
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});
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var fill = getPaint(currentStyle.fillPaint, currentStyle.fillOpacity*100, "fill")
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var stroke = getPaint(currentStyle.strokePaint, currentStyle.strokeOpacity*100, "stroke")
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methodDraw.paintBox.fill.update(true)
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methodDraw.paintBox.stroke.update(true)
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addToHistory(batchCmd);
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}
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}
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}
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};
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});
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