572 lines
24 KiB
JavaScript
572 lines
24 KiB
JavaScript
/*
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* jGraduate 0.3.x
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*
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* jQuery Plugin for a gradient picker
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*
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* Copyright (c) 2009 Jeff Schiller
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* http://blog.codedread.com/
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*
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* Apache 2 License
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jGraduate( options, okCallback, cancelCallback )
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where options is an object literal:
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{
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window: { title: "Pick the start color and opacity for the gradient" },
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images: { clientPath: "images/" },
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paint: a Paint object
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}
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- the Paint object is:
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Paint {
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type: String, // one of "none", "solidColor", "linearGradient", "radialGradient"
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alpha: Number representing opacity (0-100),
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solidColor: String representing #RRGGBB hex of color,
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linearGradient: object of interface SVGLinearGradientElement,
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}
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$.jGraduate.Paint() -> constructs a 'none' color
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$.jGraduate.Paint({copy: o}) -> creates a copy of the paint o
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$.jGraduate.Paint({hex: "#rrggbb"}) -> creates a solid color paint with hex = "#rrggbb"
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$.jGraduate.Paint({linearGradient: o, a: 50}) -> creates a linear gradient paint with opacity=0.5
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$.jGraduate.Paint({hex: "#rrggbb", linearGradient: o}) -> throws an exception?
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- picker accepts the following object as input:
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{
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okCallback: function to call when Ok is pressed
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cancelCallback: function to call when Cancel is pressed
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paint: object describing the paint to display initially, if not set, then default to opaque white
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}
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- okCallback receives a Paint object
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*
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*/
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var ns = { svg: 'http://www.w3.org/2000/svg', xlink: 'http://www.w3.org/1999/xlink' };
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if(!window.console) {
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window.console = new function() {
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this.log = function(str) {};
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this.dir = function(str) {};
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};
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}
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$.cloneNode = function(el) {
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if(!window.opera) return el.cloneNode(true);
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// manually create a copy of the element
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opera.postError(ns.svg, el.nodeName);
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var new_el = document.createElementNS(ns.svg, el.nodeName);
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$.each(el.attributes, function(i, attr) {
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new_el.setAttributeNS(ns.svg, attr.nodeName, attr.nodeValue);
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});
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$.each(el.childNodes, function(i, child) {
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if(child.nodeType == 1) {
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new_el.appendChild($.cloneNode(child));
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}
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});
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return new_el;
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}
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$.jGraduate = {
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Paint:
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function(opt) {
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var options = opt || {};
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this.alpha = options.alpha || 100;
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// copy paint object
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if (options.copy) {
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this.type = options.copy.type;
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this.alpha = options.copy.alpha;
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switch(this.type) {
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case "none":
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this.solidColor = null;
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this.linearGradient = null;
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break;
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case "solidColor":
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this.solidColor = options.copy.solidColor;
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this.linearGradient = null;
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break;
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case "linearGradient":
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this.solidColor = null;
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this.linearGradient = $.cloneNode(options.copy.linearGradient);
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break;
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}
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}
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// create linear gradient paint
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else if (options.linearGradient) {
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this.type = "linearGradient";
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this.solidColor = null;
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this.linearGradient = $.cloneNode(options.linearGradient);
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}
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// create solid color paint
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else if (options.solidColor) {
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this.type = "solidColor";
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this.solidColor = options.solidColor;
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}
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// create empty paint
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else {
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this.type = "none";
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this.solidColor = null;
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this.linearGradient = null;
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}
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}
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};
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jQuery.fn.jGraduateDefaults = {
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paint: new $.jGraduate.Paint(),
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window: {
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pickerTitle: "Drag markers to pick a paint",
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},
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images: {
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clientPath: "images/",
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},
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};
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jQuery.fn.jGraduate =
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function(options) {
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var $arguments = arguments;
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return this.each( function() {
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var $this = $(this), $settings = $.extend(true, {}, jQuery.fn.jGraduateDefaults, options),
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id = $this.attr('id'),
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idref = '#'+$this.attr('id')+' ';
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if (!idref)
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{
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alert('Container element must have an id attribute to maintain unique id strings for sub-elements.');
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return;
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}
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var okClicked = function() {
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$.isFunction($this.okCallback) && $this.okCallback($this.paint);
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$this.hide();
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},
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cancelClicked = function() {
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$.isFunction($this.cancelCallback) && $this.cancelCallback();
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$this.hide();
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};
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$.extend(true, $this, // public properties, methods, and callbacks
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{
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// make a copy of the incoming paint
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paint: new $.jGraduate.Paint({copy: $settings.paint}),
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okCallback: $.isFunction($arguments[1]) && $arguments[1] || null,
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cancelCallback: $.isFunction($arguments[2]) && $arguments[2] || null,
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});
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var pos = $this.position(),
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color = null;
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if ($this.paint.type == "none") {
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$this.paint = $.jGraduate.Paint({solidColor: 'ffffff'});
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}
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$this.addClass('jGraduate_Picker');
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$this.html('<ul class="jGraduate_tabs">' +
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'<li class="jGraduate_tab_color jGraduate_tab_current">Solid Color</li>' +
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'<li class="jGraduate_tab_lingrad">Linear Gradient</li>' +
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'</ul>' +
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'<div class="jGraduate_colPick"></div>' +
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'<div class="jGraduate_lgPick"></div>');
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var colPicker = $(idref + '> .jGraduate_colPick');
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var lgPicker = $(idref + '> .jGraduate_lgPick');
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lgPicker.html(
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'<div id="' + id + '_jGraduate_Swatch" class="jGraduate_Swatch">' +
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'<h2 class="jGraduate_Title">' + $settings.window.pickerTitle + '</h2>' +
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'<div id="' + id + '_jGraduate_GradContainer" class="jGraduate_GradContainer"></div>' +
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'<div id="' + id + '_jGraduate_Opacity" class="jGraduate_Opacity" title="Click to set overall opacity of the gradient paint">' +
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'<img id="' + id + '_jGraduate_AlphaArrows" class="jGraduate_AlphaArrows" src="' + $settings.images.clientPath + 'rangearrows2.gif"></img>' +
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'</div>' +
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'</div>' +
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'<div class="jGraduate_Form">' +
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'<div class="jGraduate_StopSection">' +
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'<label class="jGraduate_Form_Heading">Begin Stop</label>' +
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'<div class="jGraduate_Form_Section">' +
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'<label>x:</label>' +
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'<input type="text" id="' + id + '_jGraduate_x1" size="3" title="Enter starting x value between 0.0 and 1.0"/>' +
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'<label> y:</label>' +
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'<input type="text" id="' + id + '_jGraduate_y1" size="3" title="Enter starting y value between 0.0 and 1.0"/>' +
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'<div id="' + id + '_jGraduate_colorBoxBegin" class="colorBox"></div>' +
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'<label id="' + id + '_jGraduate_beginOpacity"> 100%</label>' +
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'</div>' +
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'</div>' +
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'<div class="jGraduate_StopSection">' +
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'<label class="jGraduate_Form_Heading">End Stop</label>' +
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'<div class="jGraduate_Form_Section">' +
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'<label>x:</label>' +
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'<input type="text" id="' + id + '_jGraduate_x2" size="3" title="Enter ending x value between 0.0 and 1.0"/>' +
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'<label> y:</label>' +
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'<input type="text" id="' + id + '_jGraduate_y2" size="3" title="Enter ending y value between 0.0 and 1.0"/>' +
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'<div id="' + id + '_jGraduate_colorBoxEnd" class="colorBox"></div>' +
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'<label id="' + id + '_jGraduate_endOpacity">100%</label>' +
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'</div>' +
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'</div>' +
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'<div class="jGraduate_OpacityField">' +
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'<label class="jGraduate_OpacityLabel">A: </label>' +
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'<input type="text" id="' + id + '_jGraduate_OpacityInput" class="jGraduate_OpacityInput" size="3" value="100"/>%' +
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'</div>' +
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'</div>' +
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'<div class="jGraduate_OkCancel">' +
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'<input type="button" id="' + id + '_jGraduate_Ok" class="jGraduate_Ok" value="OK"/>' +
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'<input type="button" id="' + id + '_jGraduate_Cancel" class="jGraduate_Cancel" value="Cancel"/>' +
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'</div>' +
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'<div class="jGraduate_LightBox"></div>' +
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'<div id="' + id + '_jGraduate_stopPicker" class="jGraduate_stopPicker"></div>');
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// --------------
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// Set up all the SVG elements (the gradient, stops and rectangle)
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var MAX = 256, MARGINX = 0, MARGINY = 0, STOP_RADIUS = 15/2,
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SIZEX = MAX - 2*MARGINX, SIZEY = MAX - 2*MARGINY;
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var container = document.getElementById(id+'_jGraduate_GradContainer');
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var svg = container.appendChild(document.createElementNS(ns.svg, 'svg'));
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svg.id = id+'_jgraduate_svg';
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svg.setAttribute('width', MAX);
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svg.setAttribute('height', MAX);
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svg.setAttribute("xmlns", ns.svg);
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// if we are sent a gradient, import it
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if ($this.paint.type == "linearGradient") {
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$this.paint.linearGradient.id = id+'_jgraduate_grad';
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$this.paint.linearGradient = svg.appendChild($.cloneNode($this.paint.linearGradient));
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}
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else { // we create a gradient
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var grad = svg.appendChild(document.createElementNS(ns.svg, 'linearGradient'));
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grad.id = id+'_jgraduate_grad';
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grad.setAttribute('x1','0.0');
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grad.setAttribute('y1','0.0');
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grad.setAttribute('x2','1.0');
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grad.setAttribute('y2','1.0');
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var begin = grad.appendChild(document.createElementNS(ns.svg, 'stop'));
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begin.setAttribute('offset', '0.0');
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begin.setAttribute('stop-color', '#ff0000');
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var end = grad.appendChild(document.createElementNS(ns.svg, 'stop'));
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end.setAttribute('offset', '1.0');
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end.setAttribute('stop-color', '#ffff00');
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$this.paint.linearGradient = grad;
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}
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var gradalpha = $this.paint.alpha;
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$('#' + id + '_jGraduate_OpacityInput').val(gradalpha);
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var posx = parseInt(255*(gradalpha/100)) - 4.5;
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$('#' + id + '_jGraduate_AlphaArrows').css({'margin-left':posx});
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$('#' + id + '_jgraduate_rect').attr('fill-opacity', gradalpha/100);
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var x1 = parseFloat($this.paint.linearGradient.getAttribute('x1')||0.0),
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y1 = parseFloat($this.paint.linearGradient.getAttribute('y1')||0.0),
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x2 = parseFloat($this.paint.linearGradient.getAttribute('x2')||1.0),
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y2 = parseFloat($this.paint.linearGradient.getAttribute('y2')||0.0);
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var rect = document.createElementNS(ns.svg, 'rect');
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rect.id = id + '_jgraduate_rect';
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rect.setAttribute('x', MARGINX);
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rect.setAttribute('y', MARGINY);
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rect.setAttribute('width', SIZEY);
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rect.setAttribute('height', SIZEY);
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rect.setAttribute('fill', 'url(#'+id+'_jgraduate_grad)');
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rect.setAttribute('fill-opacity', '1.0');
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rect = svg.appendChild(rect);
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// stop visuals created here
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var beginStop = document.createElementNS(ns.svg, 'image');
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beginStop.id = id + "_stop1";
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beginStop.setAttribute('class', 'stop');
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beginStop.setAttributeNS(ns.xlink, 'href', $settings.images.clientPath + 'mappoint.gif');
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beginStop.setAttributeNS(ns.xlink, "title", "Begin Stop");
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beginStop.appendChild(document.createElementNS(ns.svg, 'title')).appendChild(
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document.createTextNode("Begin Stop"));
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beginStop.setAttribute('width', 18);
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beginStop.setAttribute('height', 18);
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beginStop.setAttribute('x', MARGINX + SIZEX*x1 - STOP_RADIUS);
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beginStop.setAttribute('y', MARGINY + SIZEY*y1 - STOP_RADIUS);
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beginStop.setAttribute('cursor', 'move');
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// must append only after setting all attributes due to Webkit Bug 27952
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// https://bugs.webkit.org/show_bug.cgi?id=27592
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beginStop = svg.appendChild(beginStop);
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var endStop = document.createElementNS(ns.svg, 'image');
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endStop.id = id + "_stop2";
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endStop.setAttribute('class', 'stop');
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endStop.setAttributeNS(ns.xlink, 'href', $settings.images.clientPath + 'mappoint.gif');
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endStop.setAttributeNS(ns.xlink, "title", "End Stop");
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endStop.appendChild(document.createElementNS(ns.svg, 'title')).appendChild(
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document.createTextNode("End Stop"));
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endStop.setAttribute('width', 18);
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endStop.setAttribute('height', 18);
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endStop.setAttribute('x', MARGINX + SIZEX*x2 - STOP_RADIUS);
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endStop.setAttribute('y', MARGINY + SIZEY*y2 - STOP_RADIUS);
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endStop.setAttribute('cursor', 'move');
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endStop = svg.appendChild(endStop);
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// bind GUI elements
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$('#'+id+'_jGraduate_Ok').bind('click', function() {
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$this.paint.type = "linearGradient";
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$this.paint.solidColor = null;
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okClicked();
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});
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$('#'+id+'_jGraduate_Cancel').bind('click', function(paint) {
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cancelClicked();
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});
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var x1 = $this.paint.linearGradient.getAttribute('x1');
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if(!x1) x1 = "0.0";
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x1Input = $('#'+id+'_jGraduate_x1');
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x1Input.val(x1);
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x1Input.change( function() {
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if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
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this.value = 0.0;
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}
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$this.paint.linearGradient.setAttribute('x1', this.value);
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beginStop.setAttribute('x', MARGINX + SIZEX*this.value - STOP_RADIUS);
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});
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var y1 = $this.paint.linearGradient.getAttribute('y1');
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if(!y1) y1 = "0.0";
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y1Input = $('#'+id+'_jGraduate_y1');
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y1Input.val(y1);
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y1Input.change( function() {
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if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
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this.value = 0.0;
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}
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$this.paint.linearGradient.setAttribute('y1', this.value);
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beginStop.setAttribute('y', MARGINY + SIZEY*this.value - STOP_RADIUS);
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});
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var x2 = $this.paint.linearGradient.getAttribute('x2');
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if(!x2) x2 = "1.0";
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x2Input = $('#'+id+'_jGraduate_x2');
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x2Input.val(x2);
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x2Input.change( function() {
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if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
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this.value = 1.0;
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}
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$this.paint.linearGradient.setAttribute('x2', this.value);
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endStop.setAttribute('x', MARGINX + SIZEX*this.value - STOP_RADIUS);
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});
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var y2 = $this.paint.linearGradient.getAttribute('y2');
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if(!y2) y2 = "0.0";
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y2Input = $('#'+id+'_jGraduate_y2');
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y2Input.val(y2);
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y2Input.change( function() {
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if (isNaN(parseFloat(this.value)) || this.value < 0.0 || this.value > 1.0) {
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this.value = 0.0;
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}
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$this.paint.linearGradient.setAttribute('y2', this.value);
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endStop.setAttribute('y', MARGINY + SIZEY*this.value - STOP_RADIUS);
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});
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var stops = $this.paint.linearGradient.getElementsByTagNameNS(ns.svg, 'stop');
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var numstops = stops.length;
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// if there are not at least two stops, then
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if (numstops < 2) {
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while (numstops < 2) {
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$this.paint.linearGradient.appendChild( document.createElementNS(ns.svg, 'stop') );
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++numstops;
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}
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stops = $this.paint.linearGradient.getElementsByTagNameNS(ns.svg, 'stop');
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}
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var setOpacitySlider = function(e, div) {
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var offset = div.offset();
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var x = (e.pageX - offset.left - parseInt(div.css('border-left-width')));
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if (x > 255) x = 255;
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if (x < 0) x = 0;
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var posx = x - 4.5;
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x /= 255;
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$('#' + id + '_jGraduate_AlphaArrows').css({'margin-left':posx});
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$('#' + id + '_jgraduate_rect').attr('fill-opacity', x);
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x = parseInt(x*100);
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$('#' + id + '_jGraduate_OpacityInput').val(x);
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$this.paint.alpha = x;
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};
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// handle dragging on the opacity slider
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var bSlidingOpacity = false;
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$('.jGraduate_Opacity').mousedown(function(evt) {
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setOpacitySlider(evt, $(this));
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bSlidingOpacity = true;
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evt.preventDefault();
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});
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$('.jGraduate_Opacity').mousemove(function(evt) {
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if (bSlidingOpacity) {
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setOpacitySlider(evt, $(this));
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evt.preventDefault();
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}
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});
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$('.jGraduate_Opacity').mouseup(function(evt) {
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setOpacitySlider(evt, $(this));
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bSlidingOpacity = false;
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evt.preventDefault();
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});
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// handle dragging the stop around the swatch
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var draggingStop = null;
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var startx = -1, starty = -1;
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// for whatever reason, Opera does not allow $('image.stop') here,
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// and Firefox 1.5 does not allow $('.stop')
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$('.stop, #color_picker_jGraduate_GradContainer image').mousedown(function(evt) {
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draggingStop = this;
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startx = evt.clientX;
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starty = evt.clientY;
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evt.preventDefault();
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});
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$('#'+id+'_jgraduate_svg').mousemove(function(evt) {
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if (null != draggingStop) {
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var dx = evt.clientX - startx;
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var dy = evt.clientY - starty;
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startx += dx;
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starty += dy;
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var x = parseFloat(draggingStop.getAttribute('x')) + dx;
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var y = parseFloat(draggingStop.getAttribute('y')) + dy;
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// clamp stop to the swatch
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if (x < MARGINX - STOP_RADIUS) x = MARGINX - STOP_RADIUS;
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if (y < MARGINY - STOP_RADIUS) y = MARGINY - STOP_RADIUS;
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if (x > MARGINX + SIZEX - STOP_RADIUS) x = MARGINX + SIZEX - STOP_RADIUS;
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if (y > MARGINY + SIZEY - STOP_RADIUS) y = MARGINY + SIZEY - STOP_RADIUS;
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draggingStop.setAttribute('x', x);
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draggingStop.setAttribute('y', y);
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|
// calculate stop offset
|
|
var fracx = (x - MARGINX + STOP_RADIUS)/SIZEX;
|
|
var fracy = (y - MARGINY + STOP_RADIUS)/SIZEY;
|
|
|
|
if (draggingStop.id == (id+'_stop1')) {
|
|
x1Input.val(fracx);
|
|
y1Input.val(fracy);
|
|
$this.paint.linearGradient.setAttribute('x1', fracx);
|
|
$this.paint.linearGradient.setAttribute('y1', fracy);
|
|
}
|
|
else {
|
|
x2Input.val(fracx);
|
|
y2Input.val(fracy);
|
|
$this.paint.linearGradient.setAttribute('x2', fracx);
|
|
$this.paint.linearGradient.setAttribute('y2', fracy);
|
|
}
|
|
|
|
evt.preventDefault();
|
|
}
|
|
});
|
|
$('#'+id+'_jgraduate_svg').mouseup(function(evt) {
|
|
draggingStop = null;
|
|
});
|
|
|
|
var beginColor = stops[0].getAttribute('stop-color');
|
|
if(!beginColor) beginColor = '#000';
|
|
beginColorBox = $('#'+id+'_jGraduate_colorBoxBegin');
|
|
beginColorBox.css({'background-color':beginColor});
|
|
|
|
var beginOpacity = stops[0].getAttribute('stop-opacity');
|
|
if(!beginOpacity) beginOpacity = '1.0';
|
|
$('#'+id+'jGraduate_beginOpacity').html( (beginOpacity*100)+'%' );
|
|
|
|
var endColor = stops[stops.length-1].getAttribute('stop-color');
|
|
if(!endColor) endColor = '#000';
|
|
endColorBox = $('#'+id+'_jGraduate_colorBoxEnd');
|
|
endColorBox.css({'background-color':endColor});
|
|
|
|
var endOpacity = stops[stops.length-1].getAttribute('stop-opacity');
|
|
if(!endOpacity) endOpacity = '1.0';
|
|
$('#'+id+'jGraduate_endOpacity').html( (endOpacity*100)+'%' );
|
|
|
|
$('#'+id+'_jGraduate_colorBoxBegin').click(function() {
|
|
$('div.jGraduate_LightBox').show();
|
|
var colorbox = $(this);
|
|
var thisAlpha = (parseFloat(beginOpacity)*255).toString(16);
|
|
while (thisAlpha.length < 2) { thisAlpha = "0" + thisAlpha; }
|
|
color = beginColor.substr(1) + thisAlpha;
|
|
$('#'+id+'_jGraduate_stopPicker').css({'left': 100, 'bottom': 15}).jPicker({
|
|
window: { title: "Pick the start color and opacity for the gradient" },
|
|
images: { clientPath: $settings.images.clientPath },
|
|
color: { active: color, alphaSupport: true }
|
|
}, function(color){
|
|
beginColor = color.get_Hex() ? ('#'+color.get_Hex()) : "none";
|
|
beginOpacity = color.get_A() ? color.get_A()/100 : 1;
|
|
colorbox.css('background', beginColor);
|
|
$('#'+id+'_jGraduate_beginOpacity').html(parseInt(beginOpacity*100)+'%');
|
|
stops[0].setAttribute('stop-color', beginColor);
|
|
stops[0].setAttribute('stop-opacity', beginOpacity);
|
|
$('div.jGraduate_LightBox').hide();
|
|
$('#'+id+'_jGraduate_stopPicker').hide();
|
|
}, null, function() {
|
|
$('div.jGraduate_LightBox').hide();
|
|
$('#'+id+'_jGraduate_stopPicker').hide();
|
|
});
|
|
});
|
|
$('#'+id+'_jGraduate_colorBoxEnd').click(function() {
|
|
$('div.jGraduate_LightBox').show();
|
|
var colorbox = $(this);
|
|
var thisAlpha = (parseFloat(endOpacity)*255).toString(16);
|
|
while (thisAlpha.length < 2) { thisAlpha = "0" + thisAlpha; }
|
|
color = endColor.substr(1) + thisAlpha;
|
|
$('#'+id+'_jGraduate_stopPicker').css({'left': 100, 'top': 15}).jPicker({
|
|
window: { title: "Pick the end color and opacity for the gradient" },
|
|
images: { clientPath: $settings.images.clientPath },
|
|
color: { active: color, alphaSupport: true }
|
|
}, function(color){
|
|
endColor = color.get_Hex() ? ('#'+color.get_Hex()) : "none";
|
|
endOpacity = color.get_A() ? color.get_A()/100 : 1;
|
|
colorbox.css('background', endColor);
|
|
$('#'+id+'_jGraduate_endOpacity').html(parseInt(endOpacity*100)+'%');
|
|
stops[1].setAttribute('stop-color', endColor);
|
|
stops[1].setAttribute('stop-opacity', endOpacity);
|
|
$('div.jGraduate_LightBox').hide();
|
|
$('#'+id+'_jGraduate_stopPicker').hide();
|
|
}, null, function() {
|
|
$('div.jGraduate_LightBox').hide();
|
|
$('#'+id+'_jGraduate_stopPicker').hide();
|
|
});
|
|
});
|
|
|
|
// --------------
|
|
var thisAlpha = ($this.paint.alpha*255/100).toString(16);
|
|
while (thisAlpha.length < 2) { thisAlpha = "0" + thisAlpha; }
|
|
color = $this.paint.solidColor == "none" ? "" : $this.paint.solidColor + thisAlpha;
|
|
colPicker.jPicker(
|
|
{
|
|
window: { title: $settings.window.pickerTitle },
|
|
images: { clientPath: $settings.images.clientPath },
|
|
color: { active: color, alphaSupport: true }
|
|
},
|
|
function(color) {
|
|
$this.paint.type = "solidColor";
|
|
$this.paint.alpha = color.get_A() ? color.get_A() : 100;
|
|
$this.paint.solidColor = color.get_Hex() ? color.get_Hex() : "none";
|
|
$this.paint.linearGradient = null;
|
|
okClicked();
|
|
},
|
|
null,
|
|
function(){ cancelClicked(); }
|
|
);
|
|
|
|
$(idref + ' .jGraduate_tab_color').click( function(){
|
|
$(idref + ' .jGraduate_tab_lingrad').removeClass('jGraduate_tab_current');
|
|
$(idref + ' .jGraduate_tab_color').addClass('jGraduate_tab_current');
|
|
lgPicker.hide();
|
|
colPicker.show();
|
|
});
|
|
$(idref + ' .jGraduate_tab_lingrad').click( function(){
|
|
$(idref + ' .jGraduate_tab_color').removeClass('jGraduate_tab_current');
|
|
$(idref + ' .jGraduate_tab_lingrad').addClass('jGraduate_tab_current');
|
|
colPicker.hide();
|
|
lgPicker.show();
|
|
});
|
|
|
|
if ($this.paint.type == "linearGradient") {
|
|
lgPicker.show();
|
|
colPicker.hide();
|
|
$(idref + ' .jGraduate_tab_color').removeClass('jGraduate_tab_current');
|
|
$(idref + ' .jGraduate_tab_lingrad').addClass('jGraduate_tab_current');
|
|
}
|
|
else {
|
|
colPicker.show();
|
|
lgPicker.hide();
|
|
$(idref + ' .jGraduate_tab_color').addClass('jGraduate_tab_current');
|
|
$(idref + ' .jGraduate_tab_lingrad').removeClass('jGraduate_tab_current');
|
|
}
|
|
|
|
$this.show();
|
|
});
|
|
};
|