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<h1 class="file-heading">File: src/pixi/loaders/JsonLoader.js</h1>
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<pre class="code prettyprint linenums">
/**
* @author Mat Groves http://matgroves.com/ @Doormat23
*/
/**
* The json file loader is used to load in JSON data and parse it
* When loaded this class will dispatch a 'loaded' event
* If loading fails this class will dispatch an 'error' event
*
* @class JsonLoader
* @uses EventTarget
* @constructor
* @param url {String} The url of the JSON file
* @param crossorigin {Boolean} Whether requests should be treated as crossorigin
*/
PIXI.JsonLoader = function (url, crossorigin) {
PIXI.EventTarget.call(this);
/**
* The url of the bitmap font data
*
* @property url
* @type String
*/
this.url = url;
/**
* Whether the requests should be treated as cross origin
*
* @property crossorigin
* @type Boolean
*/
this.crossorigin = crossorigin;
/**
* [read-only] The base url of the bitmap font data
*
* @property baseUrl
* @type String
* @readOnly
*/
this.baseUrl = url.replace(/[^\/]*$/, '');
/**
* [read-only] Whether the data has loaded yet
*
* @property loaded
* @type Boolean
* @readOnly
*/
this.loaded = false;
};
// constructor
PIXI.JsonLoader.prototype.constructor = PIXI.JsonLoader;
/**
* Loads the JSON data
*
* @method load
*/
PIXI.JsonLoader.prototype.load = function () {
if(window.XDomainRequest)
{
this.ajaxRequest = new window.XDomainRequest();
}
else if (window.XMLHttpRequest)
{
this.ajaxRequest = new window.XMLHttpRequest();
}
else
{
this.ajaxRequest = new window.ActiveXObject('Microsoft.XMLHTTP');
}
// this.ajaxRequest = new PIXI.AjaxRequest(this.crossorigin);
var scope = this;
this.ajaxRequest.onload = function () {
scope.onJSONLoaded();
};
// this.ajaxRequest.open('GET', this.url, true);
// if (this.ajaxRequest.overrideMimeType) this.ajaxRequest.overrideMimeType('application/json');
// this.ajaxRequest.send(null);
this.ajaxRequest.open('GET',this.url,false);
this.ajaxRequest.send();
};
/**
* Invoke when JSON file is loaded
*
* @method onJSONLoaded
* @private
*/
PIXI.JsonLoader.prototype.onJSONLoaded = function () {
// if (this.ajaxRequest.readyState === 4) {
// if (this.ajaxRequest.status === 200 || window.location.protocol.indexOf('http') === -1) {
this.json = JSON.parse(this.ajaxRequest.responseText);
if(this.json.frames)
{
// sprite sheet
var scope = this;
var textureUrl = this.baseUrl + this.json.meta.image;
var image = new PIXI.ImageLoader(textureUrl, this.crossorigin);
var frameData = this.json.frames;
this.texture = image.texture.baseTexture;
image.addEventListener('loaded', function() {
scope.onLoaded();
});
for (var i in frameData) {
var rect = frameData[i].frame;
if (rect) {
PIXI.TextureCache[i] = new PIXI.Texture(this.texture, {
x: rect.x,
y: rect.y,
width: rect.w,
height: rect.h
});
// check to see ifthe sprite ha been trimmed..
if (frameData[i].trimmed) {
var texture = PIXI.TextureCache[i];
var actualSize = frameData[i].sourceSize;
var realSize = frameData[i].spriteSourceSize;
texture.trim = new PIXI.Rectangle(realSize.x, realSize.y, actualSize.w, actualSize.h);
}
}
}
image.load();
}
else if(this.json.bones)
{
// spine animation
var spineJsonParser = new spine.SkeletonJson();
var skeletonData = spineJsonParser.readSkeletonData(this.json);
PIXI.AnimCache[this.url] = skeletonData;
this.onLoaded();
}
else
{
this.onLoaded();
}
// }
// else
//{
// this.onError();
// / }
// }
};
/**
* Invoke when json file loaded
*
* @method onLoaded
* @private
*/
PIXI.JsonLoader.prototype.onLoaded = function () {
this.loaded = true;
this.dispatchEvent({
type: 'loaded',
content: this
});
};
/**
* Invoke when error occured
*
* @method onError
* @private
*/
PIXI.JsonLoader.prototype.onError = function () {
this.dispatchEvent({
type: 'error',
content: this
});
};
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