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<title>Phaser Source: d:/wamp/www/phaser/src/pixi/loaders/ImageLoader.js</title>
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<h1 class="page-title">Source: d:/wamp/www/phaser/src/pixi/loaders/ImageLoader.js</h1>
<section>
<article>
<pre class="sunlight-highlight-javascript linenums">/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
* The image loader class is responsible for loading images file formats ('jpeg', 'jpg', 'png' and 'gif')
* Once the image has been loaded it is stored in the PIXI texture cache and can be accessed though PIXI.Texture.fromFrame() and PIXI.Sprite.fromFrame()
* When loaded this class will dispatch a 'loaded' event
*
* @class ImageLoader
* @uses EventTarget
* @constructor
* @param url {String} The url of the image
* @param crossorigin {Boolean} Whether requests should be treated as crossorigin
*/
PIXI.ImageLoader = function(url, crossorigin)
{
/**
* The texture being loaded
*
* @property texture
* @type Texture
*/
this.texture = PIXI.Texture.fromImage(url, crossorigin);
/**
* if the image is loaded with loadFramedSpriteSheet
* frames will contain the sprite sheet frames
*
* @property frames
* @type Array
* @readOnly
*/
this.frames = [];
};
// constructor
PIXI.ImageLoader.prototype.constructor = PIXI.ImageLoader;
PIXI.EventTarget.mixin(PIXI.ImageLoader.prototype);
/**
* Loads image or takes it from cache
*
* @method load
*/
PIXI.ImageLoader.prototype.load = function()
{
if(!this.texture.baseTexture.hasLoaded)
{
this.texture.baseTexture.on('loaded', this.onLoaded.bind(this));
}
else
{
this.onLoaded();
}
};
/**
* Invoked when image file is loaded or it is already cached and ready to use
*
* @method onLoaded
* @private
*/
PIXI.ImageLoader.prototype.onLoaded = function()
{
this.emit('loaded', { content: this });
};
/**
* Loads image and split it to uniform sized frames
*
* @method loadFramedSpriteSheet
* @param frameWidth {Number} width of each frame
* @param frameHeight {Number} height of each frame
* @param textureName {String} if given, the frames will be cached in &lt;textureName>-&lt;ord> format
*/
PIXI.ImageLoader.prototype.loadFramedSpriteSheet = function(frameWidth, frameHeight, textureName)
{
this.frames = [];
var cols = Math.floor(this.texture.width / frameWidth);
var rows = Math.floor(this.texture.height / frameHeight);
var i=0;
for (var y=0; y&lt;rows; y++)
{
for (var x=0; x&lt;cols; x++,i++)
{
var texture = new PIXI.Texture(this.texture.baseTexture, {
x: x*frameWidth,
y: y*frameHeight,
width: frameWidth,
height: frameHeight
});
this.frames.push(texture);
if (textureName) PIXI.TextureCache[textureName + '-' + i] = texture;
}
}
this.load();
};
</pre>
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Phaser Copyright © 2012-2014 Photon Storm Ltd.
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