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https://github.com/hiloteam/Hilo.git
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71 lines
2.2 KiB
JavaScript
71 lines
2.2 KiB
JavaScript
/**
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* Hilo
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* Copyright 2015 alibaba.com
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* Licensed under the MIT License
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*/
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/**
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* <iframe src='../../../examples/Bitmap.html?noHeader' width = '300' height = '200' scrolling='no'></iframe>
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* <br/>
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* 使用示例:
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* <pre>
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* var bmp = new Hilo.Bitmap({image:imgElem, rect:[0, 0, 100, 100]});
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* stage.addChild(bmp);
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* </pre>
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* @class Bitmap类表示位图图像类。
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* @augments View
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* @param {Object} properties 创建对象的属性参数。可包含此类所有可写属性。此外还包括：
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* <ul>
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* <li><b>image</b> - 位图所在的图像image。必需。</li>
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* <li><b>rect</b> - 位图在图像image中矩形区域。可选。</li>
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* <li><b>crossOrigin</b> - 是否设置crossOrigin。默认否。</li>
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* </ul>
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* @module hilo/view/Bitmap
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* @requires hilo/core/Hilo
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* @requires hilo/core/Class
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* @requires hilo/view/View
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* @requires hilo/view/Drawable
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*/
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var Bitmap = Class.create(/** @lends Bitmap.prototype */{
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Extends: View,
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constructor: function(properties){
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properties = properties || {};
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this.id = this.id || properties.id || Hilo.getUid("Bitmap");
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Bitmap.superclass.constructor.call(this, properties);
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this.drawable = new Drawable(properties);
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//init width and height
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if(!this.width || !this.height){
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var rect = this.drawable.rect;
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if(rect){
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this.width = rect[2];
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this.height = rect[3];
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}
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}
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},
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/**
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* 设置位图的图片。
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* @param {Image|String} image 图片对象或地址。
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* @param {Array} rect 指定位图在图片image的矩形区域。可选。
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* @param {Boolean} crossOrigin 是否设置 crossOrigin，默认否。
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* @returns {Bitmap} 位图本身。
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*/
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setImage: function(image, rect, crossOrigin){
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this.drawable.init({image:image, rect:rect, crossOrigin:crossOrigin});
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if(rect){
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this.width = rect[2];
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this.height = rect[3];
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}
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else if(!this.width && !this.height){
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rect = this.drawable.rect;
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if(rect){
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this.width = rect[2];
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this.height = rect[3];
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}
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}
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return this;
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}
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});
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