fireball/lib/loaders/ImageLoader.js

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2018-12-25 13:59:22 +00:00
/**
* @author mrdoob / http://mrdoob.com/
*/
import { Cache } from './Cache.js';
import { DefaultLoadingManager } from './LoadingManager.js';
function ImageLoader( manager ) {
this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
}
Object.assign( ImageLoader.prototype, {
crossOrigin: 'anonymous',
load: function ( url, onLoad, onProgress, onError ) {
if ( url === undefined ) url = '';
if ( this.path !== undefined ) url = this.path + url;
url = this.manager.resolveURL( url );
var scope = this;
var cached = Cache.get( url );
if ( cached !== undefined ) {
scope.manager.itemStart( url );
setTimeout( function () {
if ( onLoad ) onLoad( cached );
scope.manager.itemEnd( url );
}, 0 );
return cached;
}
var image = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'img' );
function onImageLoad() {
image.removeEventListener( 'load', onImageLoad, false );
image.removeEventListener( 'error', onImageError, false );
Cache.add( url, this );
if ( onLoad ) onLoad( this );
scope.manager.itemEnd( url );
}
function onImageError( event ) {
image.removeEventListener( 'load', onImageLoad, false );
image.removeEventListener( 'error', onImageError, false );
if ( onError ) onError( event );
scope.manager.itemEnd( url );
scope.manager.itemError( url );
}
image.addEventListener( 'load', onImageLoad, false );
image.addEventListener( 'error', onImageError, false );
if ( url.substr( 0, 5 ) !== 'data:' ) {
if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;
}
scope.manager.itemStart( url );
image.src = url;
return image;
},
setCrossOrigin: function ( value ) {
this.crossOrigin = value;
return this;
},
setPath: function ( value ) {
this.path = value;
return this;
}
} );
export { ImageLoader };