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/* |
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By Osvaldas Valutis, www.osvaldas.info |
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Available for use under the MIT License |
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*/ |
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|
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;( function( $, window, document, undefined ) |
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{ |
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'use strict'; |
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|
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var cssTransitionSupport = function() |
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{ |
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var s = document.body || document.documentElement, s = s.style; |
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if( s.WebkitTransition == '' ) return '-webkit-'; |
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if( s.MozTransition == '' ) return '-moz-'; |
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if( s.OTransition == '' ) return '-o-'; |
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if( s.transition == '' ) return ''; |
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return false; |
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}, |
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|
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isCssTransitionSupport = cssTransitionSupport() === false ? false : true, |
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|
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cssTransitionTranslateX = function( element, positionX, speed ) |
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{ |
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var options = {}, prefix = cssTransitionSupport(); |
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options[ prefix + 'transform' ] = 'translateX(' + positionX + ')'; |
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options[ prefix + 'transition' ] = prefix + 'transform ' + speed + 's linear'; |
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element.css( options ); |
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}, |
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|
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hasTouch = ( 'ontouchstart' in window ), |
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hasPointers = window.navigator.pointerEnabled || window.navigator.msPointerEnabled, |
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wasTouched = function( event ) |
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{ |
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if( hasTouch ) |
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return true; |
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|
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if( !hasPointers || typeof event === 'undefined' || typeof event.pointerType === 'undefined' ) |
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return false; |
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|
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if( typeof event.MSPOINTER_TYPE_MOUSE !== 'undefined' ) |
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{ |
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if( event.MSPOINTER_TYPE_MOUSE != event.pointerType ) |
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return true; |
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} |
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else |
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if( event.pointerType != 'mouse' ) |
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return true; |
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|
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return false; |
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}; |
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|
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$.fn.imageLightbox = function(selector, opts ) |
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{ |
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var options = $.extend( |
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{ |
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selector: 'id="imagelightbox"', |
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animationSpeed: 250, |
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preloadNext: true, |
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enableKeyboard: true, |
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quitOnEnd: false, |
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quitOnImgClick: false, |
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quitOnDocClick: true, |
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onStart: false, |
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onEnd: false, |
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onLoadStart: false, |
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onLoadEnd: false |
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}, |
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opts ), |
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|
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targets = $([]), |
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target = $(), |
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image = $(), |
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imageWidth = 0, |
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imageHeight = 0, |
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swipeDiff = 0, |
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inProgress = false, |
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|
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getTargetIndex = function() { |
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var match = -1; |
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$(targets).each(function (idx, array_target) { |
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if (array_target.href == target[0].href) { |
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match = idx; |
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return false; |
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} |
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}); |
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return match; |
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}, |
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|
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setImage = function() |
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{ |
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if( !image.length ) return true; |
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|
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var screenWidth = $( window ).width() * 0.8, |
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screenHeight = $( window ).height() * 0.9, |
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tmpImage = new Image(); |
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|
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tmpImage.src = image.attr( 'src' ); |
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tmpImage.onload = function() |
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{ |
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imageWidth = tmpImage.width; |
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imageHeight = tmpImage.height; |
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|
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if( imageWidth > screenWidth || imageHeight > screenHeight ) |
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{ |
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var ratio = imageWidth / imageHeight > screenWidth / screenHeight ? imageWidth / screenWidth : imageHeight / screenHeight; |
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imageWidth /= ratio; |
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imageHeight /= ratio; |
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} |
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|
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image.css( |
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{ |
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'width': imageWidth + 'px', |
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'height': imageHeight + 'px', |
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'top': ( $( window ).height() - imageHeight ) / 2 + 'px', |
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'left': ( $( window ).width() - imageWidth ) / 2 + 'px' |
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}); |
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}; |
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}, |
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|
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loadImage = function( direction ) |
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{ |
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if( inProgress ) return false; |
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|
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direction = typeof direction === 'undefined' ? false : direction == 'left' ? 1 : -1; |
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|
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if( image.length ) |
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{ |
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if( direction !== false && ( targets.length < 2 || ( options.quitOnEnd === true && ( ( direction === -1 && targets.index( target ) == 0 ) || ( direction === 1 && targets.index( target ) == targets.length - 1 ) ) ) ) ) |
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{ |
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quitLightbox(); |
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return false; |
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} |
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var params = { 'opacity': 0 }; |
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if( isCssTransitionSupport ) cssTransitionTranslateX( image, ( 100 * direction ) - swipeDiff + 'px', options.animationSpeed / 1000 ); |
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else params.left = parseInt( image.css( 'left' ) ) + 100 * direction + 'px'; |
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image.animate( params, options.animationSpeed, function(){ removeImage(); }); |
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swipeDiff = 0; |
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} |
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|
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inProgress = true; |
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if( options.onLoadStart !== false ) options.onLoadStart(); |
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|
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setTimeout( function() |
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{ |
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image = $( '<img ' + options.selector + ' />' ) |
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.attr( 'src', target.attr( 'href' ) ) |
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.on('load', function() |
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{ |
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image.appendTo( 'body' ); |
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setImage(); |
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|
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var params = { 'opacity': 1 }; |
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|
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image.css( 'opacity', 0 ); |
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if( isCssTransitionSupport ) |
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{ |
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cssTransitionTranslateX( image, -100 * direction + 'px', 0 ); |
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setTimeout( function(){ cssTransitionTranslateX( image, 0 + 'px', options.animationSpeed / 1000 ) }, 50 ); |
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} |
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else |
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{ |
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var imagePosLeft = parseInt( image.css( 'left' ) ); |
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params.left = imagePosLeft + 'px'; |
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image.css( 'left', imagePosLeft - 100 * direction + 'px' ); |
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} |
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image.animate( params, options.animationSpeed, function() |
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{ |
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inProgress = false; |
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if( options.onLoadEnd !== false ) options.onLoadEnd(); |
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}); |
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if( options.preloadNext ) |
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{ |
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var nextTarget = targets.eq( getTargetIndex() + 1 ); |
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if( !nextTarget.length ) nextTarget = targets.eq( 0 ); |
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$( '<img />' ).attr( 'src', nextTarget.attr( 'href' ) ).trigger('load'); |
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} |
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}) |
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.on('error', function() |
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{ |
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if( options.onLoadEnd !== false ) options.onLoadEnd(); |
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}) |
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|
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var swipeStart = 0, |
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swipeEnd = 0, |
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imagePosLeft = 0; |
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|
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image.on( hasPointers ? 'pointerup MSPointerUp' : 'click', function( e ) |
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{ |
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e.preventDefault(); |
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if( options.quitOnImgClick ) |
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{ |
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quitLightbox(); |
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return false; |
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} |
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if( wasTouched( e.originalEvent ) ) return true; |
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var posX = ( e.pageX || e.originalEvent.pageX ) - e.target.offsetLeft; |
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target = targets.eq( getTargetIndex() - ( imageWidth / 2 > posX ? 1 : -1 ) ); |
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if( !target.length ) target = targets.eq( imageWidth / 2 > posX ? targets.length : 0 ); |
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loadImage( imageWidth / 2 > posX ? 'left' : 'right' ); |
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}) |
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.on( 'touchstart pointerdown MSPointerDown', function( e ) |
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{ |
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if( !wasTouched( e.originalEvent ) || options.quitOnImgClick ) return true; |
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if( isCssTransitionSupport ) imagePosLeft = parseInt( image.css( 'left' ) ); |
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swipeStart = e.originalEvent.pageX || e.originalEvent.touches[ 0 ].pageX; |
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}) |
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.on( 'touchmove pointermove MSPointerMove', function( e ) |
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{ |
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if( (!hasPointers && e.type == 'pointermove') || !wasTouched( e.originalEvent ) || options.quitOnImgClick ) return true; |
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e.preventDefault(); |
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swipeEnd = e.originalEvent.pageX || e.originalEvent.touches[ 0 ].pageX; |
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swipeDiff = swipeStart - swipeEnd; |
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if( isCssTransitionSupport ) cssTransitionTranslateX( image, -swipeDiff + 'px', 0 ); |
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else image.css( 'left', imagePosLeft - swipeDiff + 'px' ); |
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}) |
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.on( 'touchend touchcancel pointerup pointercancel MSPointerUp MSPointerCancel', function( e ) |
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{ |
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if( !wasTouched( e.originalEvent ) || options.quitOnImgClick ) return true; |
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if( Math.abs( swipeDiff ) > 50 ) |
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{ |
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target = targets.eq( getTargetIndex() - ( swipeDiff < 0 ? 1 : -1 ) ); |
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if( !target.length ) target = targets.eq( swipeDiff < 0 ? targets.length : 0 ); |
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loadImage( swipeDiff > 0 ? 'right' : 'left' ); |
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} |
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else |
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{ |
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if( isCssTransitionSupport ) cssTransitionTranslateX( image, 0 + 'px', options.animationSpeed / 1000 ); |
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else image.animate({ 'left': imagePosLeft + 'px' }, options.animationSpeed / 2 ); |
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} |
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}); |
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|
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}, options.animationSpeed + 100 ); |
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}, |
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|
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removeImage = function() |
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{ |
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if( !image.length ) return false; |
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image.remove(); |
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image = $(); |
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}, |
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|
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quitLightbox = function() |
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{ |
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if( !image.length ) return false; |
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image.animate({ 'opacity': 0 }, options.animationSpeed, function() |
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{ |
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removeImage(); |
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inProgress = false; |
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if( options.onEnd !== false ) options.onEnd(); |
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}); |
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}, |
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|
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addTargets = function( newTargets ) |
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{ |
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$(newTargets).each( function() |
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{ |
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targets = targets.add( $( this ) ); |
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}); |
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/* |
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|
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newTargets.on( 'click.imageLightbox', function( e ) |
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{ |
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e.preventDefault(); |
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if( inProgress ) return false; |
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inProgress = false; |
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if( options.onStart !== false ) options.onStart(); |
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target = $( this ); |
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loadImage(); |
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}); |
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*/ |
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}; |
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|
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$( window ).on( 'resize', setImage ); |
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|
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if( options.quitOnDocClick ) |
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{ |
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$( document ).on( hasTouch ? 'touchend' : 'click', function( e ) |
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{ |
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if( image.length && !$( e.target ).is( image ) ) quitLightbox(); |
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}) |
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} |
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|
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if( options.enableKeyboard ) |
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{ |
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$( document ).on( 'keyup', function( e ) |
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{ |
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if( !image.length ) return true; |
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e.preventDefault(); |
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if( e.keyCode == 27 ) quitLightbox(); |
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if( e.keyCode == 37 || e.keyCode == 39 ) |
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{ |
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target = targets.eq( getTargetIndex() - ( e.keyCode == 37 ? 1 : -1 ) ); |
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if( !target.length ) target = targets.eq( e.keyCode == 37 ? targets.length : 0 ); |
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loadImage( e.keyCode == 37 ? 'left' : 'right' ); |
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} |
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}); |
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} |
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|
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$( document ).on( 'click', selector, function( e ) |
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{ |
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e.preventDefault(); |
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if( inProgress ) return false; |
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inProgress = false; |
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if( options.onStart !== false ) options.onStart(); |
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target = $( this ); |
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loadImage(); |
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}); |
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|
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this.each( function() |
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{ |
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targets = targets.add( $( this ) ); |
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}); |
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|
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this.switchImageLightbox = function( index ) |
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{ |
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var tmpTarget = targets.eq( index ); |
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if( tmpTarget.length ) |
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{ |
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var currentIndex = targets.index( target ); |
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target = tmpTarget; |
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loadImage( index < currentIndex ? 'left' : 'right' ); |
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} |
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return this; |
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}; |
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|
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this.quitImageLightbox = function() |
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{ |
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quitLightbox(); |
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return this; |
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}; |
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|
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this.addToImageLightbox = function( newTargets ) { |
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addTargets( newTargets ); |
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}; |
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|
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return this; |
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}; |
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})( jQuery, window, document ); |
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|
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jQuery(document).ready(function($) { |
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window.imageLightboxCaptionOn = function imageLightboxCaptionOn() { |
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var title = $('a[href="' + $('#imagelightbox').attr('src') + '"]').data('title'); |
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if (title != undefined && title.length > 0) { |
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$('<div id="imagelightbox-caption">' + title + '</div>').appendTo( 'body' ); |
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} |
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}; |
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window.imageLightboxCaptionOff = function imageLightboxCaptionOff() { $( '#imagelightbox-caption' ).remove(); }; |
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window.imageLightboxArrowsOn = function imageLightboxArrowsOn(instance, selector ) { |
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var $arrows = $( '<button type="button" class="imagelightbox-arrow imagelightbox-arrow-left"></button><button type="button" class="imagelightbox-arrow imagelightbox-arrow-right"></button>' ); |
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$arrows.appendTo( 'body' ); |
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$arrows.on( 'click touchend', function( e ) { |
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e.preventDefault(); |
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|
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var $this = $( this ), |
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$target = $( selector + '[href="' + $( '#imagelightbox' ).attr( 'src' ) + '"]' ), |
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index = $target.index( selector ); |
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|
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if( $this.hasClass( 'imagelightbox-arrow-left' ) ) { |
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index = index - 1; |
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if( !$( selector ).eq( index ).length ) |
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index = $( selector ).length; |
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} |
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else { |
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index = index + 1; |
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if( !$( selector ).eq( index ).length ) |
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index = 0; |
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} |
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|
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instance.switchImageLightbox( index ); |
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return false; |
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}); |
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}; |
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window.imageLightboxArrowsOff = function imageLightboxArrowsOff() { |
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$( '.imagelightbox-arrow' ).remove(); |
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}; |
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|
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window.imageLightboxCloseButtonOn = function imageLightboxCloseButtonOn(instance) { |
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$( '<button type="button" id="imagelightbox-close" title="Close"></button>' ).appendTo( 'body' ).on( 'click touchend', function(){ $( this ).remove(); instance.quitImageLightbox(); return false; }); |
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}; |
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|
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window.imageLightboxCloseButtonOff = function imageLightboxCloseButtonOff() { |
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$( '#imagelightbox-close' ).remove(); |
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}; |
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|
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window.imageLightboxLoadingOn = function() { |
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$('<div id="imagelightbox-loading"><div></div></div>').appendTo('body'); |
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} |
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}); |
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|
