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src_pixi_loaders_JsonLoader.js.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>src/pixi/loaders/JsonLoader.js - Pixi.JS</title>
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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 parsing it
* When loaded this class will dispatch a "loaded" event
* If load failed this class will dispatch a "error" event
* @class JsonLoader
* @extends EventTarget
* @constructor
* @param {String} url the url of the JSON file
* @param {Boolean} crossorigin
*/
PIXI.JsonLoader = function (url, crossorigin) {
PIXI.EventTarget.call(this);
this.url = url;
this.baseUrl = url.replace(/[^\/]*$/, "");
this.crossorigin = crossorigin;
this.loaded = false;
};
// constructor
PIXI.JsonLoader.constructor = PIXI.JsonLoader;
/**
* This will begin loading the JSON file
*/
PIXI.JsonLoader.prototype.load = function () {
this.ajaxRequest = new AjaxRequest();
var scope = this;
this.ajaxRequest.onreadystatechange = function () {
scope.onJSONLoaded();
};
this.ajaxRequest.open("GET", this.url, true);
if (this.ajaxRequest.overrideMimeType) this.ajaxRequest.overrideMimeType("application/json");
this.ajaxRequest.send(null);
};
/**
* Invoke when JSON file is loaded
* @private
*/
PIXI.JsonLoader.prototype.onJSONLoaded = function () {
if (this.ajaxRequest.readyState == 4) {
if (this.ajaxRequest.status == 200 || window.location.href.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 (event) {
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
});
if (frameData[i].trimmed) {
//var realSize = frameData[i].spriteSourceSize;
PIXI.TextureCache[i].realSize = frameData[i].spriteSourceSize;
PIXI.TextureCache[i].trim.x = 0; // (realSize.x / rect.w)
// calculate the offset!
}
}
}
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
* @private
*/
PIXI.JsonLoader.prototype.onLoaded = function () {
this.loaded = true;
this.dispatchEvent({
type: "loaded",
content: this
});
};
/**
* Invoke when error occured
* @private
*/
PIXI.JsonLoader.prototype.onError = function () {
this.dispatchEvent({
type: "error",
content: this
});
};
</pre>
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