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106 lines
2.8 KiB
JavaScript
Executable File
Vendored
106 lines
2.8 KiB
JavaScript
Executable File
Vendored
/**
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* Wrapper for VML element.
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* @constructor
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* @extends jvm.AbstractElement
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* @param {String} name Tag name of the element
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* @param {Object} config Set of parameters to initialize element with
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*/
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jvm.VMLElement = function(name, config){
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if (!jvm.VMLElement.VMLInitialized) {
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jvm.VMLElement.initializeVML();
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}
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jvm.VMLElement.parentClass.apply(this, arguments);
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};
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jvm.inherits(jvm.VMLElement, jvm.AbstractElement);
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/**
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* Shows if VML was already initialized for the current document or not.
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* @static
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* @private
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* @type {Boolean}
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*/
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jvm.VMLElement.VMLInitialized = false;
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/**
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* Initializes VML handling before creating the first element
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* (adds CSS class and creates namespace). Adds one of two forms
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* of createElement method depending of support by browser.
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* @static
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* @private
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*/
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// The following method of VML handling is borrowed from the
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// Raphael library by Dmitry Baranovsky.
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jvm.VMLElement.initializeVML = function(){
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try {
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if (!document.namespaces.rvml) {
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document.namespaces.add("rvml","urn:schemas-microsoft-com:vml");
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}
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/**
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* Creates DOM element.
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* @param {String} tagName Name of element
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* @private
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* @returns DOMElement
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*/
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jvm.VMLElement.prototype.createElement = function (tagName) {
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return document.createElement('<rvml:' + tagName + ' class="rvml">');
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};
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} catch (e) {
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/**
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* @private
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*/
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jvm.VMLElement.prototype.createElement = function (tagName) {
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return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
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};
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}
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document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
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jvm.VMLElement.VMLInitialized = true;
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};
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/**
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* Returns constructor for element by name prefixed with 'VML'.
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* @param {String} ctr Name of basic constructor to return
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* proper implementation for.
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* @returns Function
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* @private
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*/
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jvm.VMLElement.prototype.getElementCtr = function( ctr ){
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return jvm['VML'+ctr];
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};
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/**
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* Adds CSS class for underlying DOM element.
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* @param {String} className Name of CSS class name
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*/
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jvm.VMLElement.prototype.addClass = function( className ){
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jvm.$(this.node).addClass(className);
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};
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/**
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* Applies attribute value to the underlying DOM element.
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* @param {String} name Name of attribute
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* @param {Number|String} config Value of attribute to apply
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* @private
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*/
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jvm.VMLElement.prototype.applyAttr = function( attr, value ){
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this.node[attr] = value;
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};
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/**
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* Returns boundary box for the element.
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* @returns {Object} Boundary box with numeric fields: x, y, width, height
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* @override
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*/
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jvm.VMLElement.prototype.getBBox = function(){
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var node = jvm.$(this.node);
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return {
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x: node.position().left / this.canvas.scale,
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y: node.position().top / this.canvas.scale,
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width: node.width() / this.canvas.scale,
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height: node.height() / this.canvas.scale
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};
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}; |