112 lines
3.1 KiB
JavaScript
112 lines
3.1 KiB
JavaScript
/*!
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* jQuery imagesLoaded plugin v2.0.1
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* http://github.com/desandro/imagesloaded
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*
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* MIT License. by Paul Irish et al.
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*/
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/*jshint curly: true, eqeqeq: true, noempty: true, strict: true, undef: true, browser: true */
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/*global jQuery: false */
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;(function($, undefined) {
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'use strict';
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// blank image data-uri bypasses webkit log warning (thx doug jones)
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var BLANK = 'data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==';
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$.fn.imagesLoaded = function( callback ) {
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var $this = this,
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deferred = $.isFunction($.Deferred) ? $.Deferred() : 0,
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hasNotify = $.isFunction(deferred.notify),
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$images = $this.find('img').add( $this.filter('img') ),
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loaded = [],
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proper = [],
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broken = [];
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function doneLoading() {
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var $proper = $(proper),
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$broken = $(broken);
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if ( deferred ) {
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if ( broken.length ) {
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deferred.reject( $images, $proper, $broken );
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} else {
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deferred.resolve( $images );
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}
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}
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if ( $.isFunction( callback ) ) {
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callback.call( $this, $images, $proper, $broken );
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}
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}
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function imgLoaded( img, isBroken ) {
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// don't proceed if BLANK image, or image is already loaded
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if ( img.src === BLANK || $.inArray( img, loaded ) !== -1 ) {
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return;
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}
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// store element in loaded images array
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loaded.push( img );
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// keep track of broken and properly loaded images
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if ( isBroken ) {
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broken.push( img );
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} else {
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proper.push( img );
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}
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// cache image and its state for future calls
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$.data( img, 'imagesLoaded', { isBroken: isBroken, src: img.src } );
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// trigger deferred progress method if present
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if ( hasNotify ) {
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deferred.notifyWith( $(img), [ isBroken, $images, $(proper), $(broken) ] );
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}
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// call doneLoading and clean listeners if all images are loaded
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if ( $images.length === loaded.length ){
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setTimeout( doneLoading );
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$images.unbind( '.imagesLoaded' );
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}
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}
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// if no images, trigger immediately
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if ( !$images.length ) {
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doneLoading();
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} else {
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$images.bind( 'load.imagesLoaded error.imagesLoaded', function( event ){
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// trigger imgLoaded
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imgLoaded( event.target, event.type === 'error' );
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}).each( function( i, el ) {
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var src = el.src;
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// find out if this image has been already checked for status
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// if it was, and src has not changed, call imgLoaded on it
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var cached = $.data( el, 'imagesLoaded' );
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if ( cached && cached.src === src ) {
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imgLoaded( el, cached.isBroken );
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return;
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}
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// if complete is true and browser supports natural sizes, try
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// to check for image status manually
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if ( el.complete && el.naturalWidth !== undefined ) {
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imgLoaded( el, el.naturalWidth === 0 || el.naturalHeight === 0 );
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return;
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}
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// cached images don't fire load sometimes, so we reset src, but only when
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// dealing with IE, or image is complete (loaded) and failed manual check
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// webkit hack from http://groups.google.com/group/jquery-dev/browse_thread/thread/eee6ab7b2da50e1f
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if ( el.readyState || el.complete ) {
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el.src = BLANK;
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el.src = src;
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}
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});
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}
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return deferred ? deferred.promise( $this ) : $this;
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};
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})(jQuery); |