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449 lines
15 KiB
JavaScript
449 lines
15 KiB
JavaScript
(function($, window, document, undefined) {
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'use strict';
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var defaults = {
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thumbnail: true,
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animateThumb: true,
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currentPagerPosition: 'middle',
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thumbWidth: 100,
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thumbContHeight: 100,
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thumbMargin: 5,
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exThumbImage: false,
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showThumbByDefault: true,
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toogleThumb: true,
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pullCaptionUp: true,
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enableThumbDrag: true,
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enableThumbSwipe: true,
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swipeThreshold: 50,
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loadYoutubeThumbnail: true,
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youtubeThumbSize: 1,
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loadVimeoThumbnail: true,
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vimeoThumbSize: 'thumbnail_small',
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loadDailymotionThumbnail: true
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};
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var Thumbnail = function(element) {
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// get lightGallery core plugin data
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this.core = $(element).data('lightGallery');
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// extend module default settings with lightGallery core settings
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this.core.s = $.extend({}, defaults, this.core.s);
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this.$el = $(element);
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this.$thumbOuter = null;
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this.thumbOuterWidth = 0;
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this.thumbTotalWidth = (this.core.$items.length * (this.core.s.thumbWidth + this.core.s.thumbMargin));
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this.thumbIndex = this.core.index;
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// Thumbnail animation value
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this.left = 0;
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this.init();
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return this;
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};
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Thumbnail.prototype.init = function() {
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if (this.core.s.thumbnail && this.core.$items.length > 1) {
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if (this.core.s.showThumbByDefault) {
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this.core.$outer.addClass('lg-thumb-open');
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}
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if (this.core.s.pullCaptionUp) {
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this.core.$outer.addClass('lg-pull-caption-up');
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}
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this.build();
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if (this.core.s.animateThumb) {
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if (this.core.s.enableThumbDrag && !this.core.isTouch && this.core.doCss()) {
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this.enableThumbDrag();
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}
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if (this.core.s.enableThumbSwipe && this.core.isTouch && this.core.doCss()) {
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this.enableThumbSwipe();
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}
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this.thumbClickable = false;
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} else {
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this.thumbClickable = true;
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}
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this.toogle();
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this.thumbkeyPress();
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}
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};
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Thumbnail.prototype.build = function() {
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var _this = this;
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var thumbList = '';
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var vimeoErrorThumbSize = '';
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var $thumb;
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var html = '<div class="lg-thumb-outer">' +
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'<div class="lg-thumb group">' +
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'</div>' +
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'</div>';
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switch (this.core.s.vimeoThumbSize) {
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case 'thumbnail_large':
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vimeoErrorThumbSize = '640';
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break;
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case 'thumbnail_medium':
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vimeoErrorThumbSize = '200x150';
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break;
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case 'thumbnail_small':
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vimeoErrorThumbSize = '100x75';
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}
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_this.core.$outer.addClass('lg-has-thumb');
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_this.core.$outer.find('.lg').append(html);
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_this.$thumbOuter = _this.core.$outer.find('.lg-thumb-outer');
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_this.thumbOuterWidth = _this.$thumbOuter.width();
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if (_this.core.s.animateThumb) {
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_this.core.$outer.find('.lg-thumb').css({
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width: _this.thumbTotalWidth + 'px',
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position: 'relative'
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});
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}
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if (this.core.s.animateThumb) {
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_this.$thumbOuter.css('height', _this.core.s.thumbContHeight + 'px');
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}
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function getThumb(src, thumb, index) {
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var isVideo = _this.core.isVideo(src, index) || {};
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var thumbImg;
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var vimeoId = '';
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if (isVideo.youtube || isVideo.vimeo || isVideo.dailymotion) {
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if (isVideo.youtube) {
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if (_this.core.s.loadYoutubeThumbnail) {
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thumbImg = '//img.youtube.com/vi/' + isVideo.youtube[1] + '/' + _this.core.s.youtubeThumbSize + '.jpg';
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} else {
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thumbImg = thumb;
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}
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} else if (isVideo.vimeo) {
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if (_this.core.s.loadVimeoThumbnail) {
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thumbImg = '//i.vimeocdn.com/video/error_' + vimeoErrorThumbSize + '.jpg';
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vimeoId = isVideo.vimeo[1];
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} else {
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thumbImg = thumb;
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}
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} else if (isVideo.dailymotion) {
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if (_this.core.s.loadDailymotionThumbnail) {
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thumbImg = '//www.dailymotion.com/thumbnail/video/' + isVideo.dailymotion[1];
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} else {
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thumbImg = thumb;
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}
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}
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} else {
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thumbImg = thumb;
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}
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thumbList += '<div data-vimeo-id="' + vimeoId + '" class="lg-thumb-item" style="width:' + _this.core.s.thumbWidth + 'px; margin-right: ' + _this.core.s.thumbMargin + 'px"><img src="' + thumbImg + '" /></div>';
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vimeoId = '';
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}
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if (_this.core.s.dynamic) {
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for (var i = 0; i < _this.core.s.dynamicEl.length; i++) {
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getThumb(_this.core.s.dynamicEl[i].src, _this.core.s.dynamicEl[i].thumb, i);
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}
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} else {
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_this.core.$items.each(function(i) {
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if (!_this.core.s.exThumbImage) {
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getThumb($(this).attr('href') || $(this).attr('data-src'), $(this).find('img').attr('src'), i);
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} else {
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getThumb($(this).attr('href') || $(this).attr('data-src'), $(this).attr(_this.core.s.exThumbImage), i);
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}
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});
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}
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_this.core.$outer.find('.lg-thumb').html(thumbList);
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$thumb = _this.core.$outer.find('.lg-thumb-item');
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// Load vimeo thumbnails
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$thumb.each(function() {
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var $this = $(this);
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var vimeoVideoId = $this.attr('data-vimeo-id');
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if (vimeoVideoId) {
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$.getJSON('http://www.vimeo.com/api/v2/video/' + vimeoVideoId + '.json?callback=?', {
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format: 'json'
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}, function(data) {
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$this.find('img').attr('src', data[0][_this.core.s.vimeoThumbSize]);
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});
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}
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});
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// manage active class for thumbnail
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$thumb.eq(_this.core.index).addClass('active');
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_this.core.$el.on('onBeforeSlide.lg.tm', function() {
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$thumb.removeClass('active');
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$thumb.eq(_this.core.index).addClass('active');
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});
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$thumb.on('click.lg touchend.lg', function() {
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var _$this = $(this);
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setTimeout(function() {
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// In IE9 and bellow touch does not support
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// Go to slide if browser does not support css transitions
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if ((_this.thumbClickable && !_this.core.lgBusy) || !_this.core.doCss()) {
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_this.core.index = _$this.index();
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_this.core.slide(_this.core.index, false, true);
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}
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}, 50);
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});
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_this.core.$el.on('onBeforeSlide.lg.tm', function() {
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_this.animateThumb(_this.core.index);
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});
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$(window).on('resize.lg.thumb orientationchange.lg.thumb', function() {
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setTimeout(function() {
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_this.animateThumb(_this.core.index);
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_this.thumbOuterWidth = _this.$thumbOuter.width();
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}, 200);
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});
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};
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Thumbnail.prototype.setTranslate = function(value) {
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// jQuery supports Automatic CSS prefixing since jQuery 1.8.0
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this.core.$outer.find('.lg-thumb').css({
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transform: 'translate3d(-' + (value) + 'px, 0px, 0px)'
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});
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};
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Thumbnail.prototype.animateThumb = function(index) {
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var $thumb = this.core.$outer.find('.lg-thumb');
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if (this.core.s.animateThumb) {
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var position;
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switch (this.core.s.currentPagerPosition) {
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case 'left':
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position = 0;
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break;
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case 'middle':
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position = (this.thumbOuterWidth / 2) - (this.core.s.thumbWidth / 2);
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break;
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case 'right':
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position = this.thumbOuterWidth - this.core.s.thumbWidth;
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}
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this.left = ((this.core.s.thumbWidth + this.core.s.thumbMargin) * index - 1) - position;
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if (this.left > (this.thumbTotalWidth - this.thumbOuterWidth)) {
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this.left = this.thumbTotalWidth - this.thumbOuterWidth;
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}
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if (this.left < 0) {
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this.left = 0;
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}
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if (this.core.lGalleryOn) {
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if (!$thumb.hasClass('on')) {
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this.core.$outer.find('.lg-thumb').css('transition-duration', this.core.s.speed + 'ms');
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}
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if (!this.core.doCss()) {
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$thumb.animate({
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left: -this.left + 'px'
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}, this.core.s.speed);
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}
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} else {
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if (!this.core.doCss()) {
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$thumb.css('left', -this.left + 'px');
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}
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}
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this.setTranslate(this.left);
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}
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};
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// Enable thumbnail dragging and swiping
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Thumbnail.prototype.enableThumbDrag = function() {
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var _this = this;
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var startCoords = 0;
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var endCoords = 0;
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var isDraging = false;
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var isMoved = false;
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var tempLeft = 0;
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_this.$thumbOuter.addClass('lg-grab');
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_this.core.$outer.find('.lg-thumb').on('mousedown.lg.thumb', function(e) {
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if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
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// execute only on .lg-object
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e.preventDefault();
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startCoords = e.pageX;
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isDraging = true;
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// ** Fix for webkit cursor issue https://code.google.com/p/chromium/issues/detail?id=26723
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_this.core.$outer.scrollLeft += 1;
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_this.core.$outer.scrollLeft -= 1;
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// *
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_this.thumbClickable = false;
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_this.$thumbOuter.removeClass('lg-grab').addClass('lg-grabbing');
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}
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});
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$(window).on('mousemove.lg.thumb', function(e) {
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if (isDraging) {
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tempLeft = _this.left;
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isMoved = true;
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endCoords = e.pageX;
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_this.$thumbOuter.addClass('lg-dragging');
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tempLeft = tempLeft - (endCoords - startCoords);
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if (tempLeft > (_this.thumbTotalWidth - _this.thumbOuterWidth)) {
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tempLeft = _this.thumbTotalWidth - _this.thumbOuterWidth;
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}
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if (tempLeft < 0) {
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tempLeft = 0;
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}
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// move current slide
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_this.setTranslate(tempLeft);
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}
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});
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$(window).on('mouseup.lg.thumb', function() {
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if (isMoved) {
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isMoved = false;
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_this.$thumbOuter.removeClass('lg-dragging');
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_this.left = tempLeft;
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if (Math.abs(endCoords - startCoords) < _this.core.s.swipeThreshold) {
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_this.thumbClickable = true;
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}
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} else {
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_this.thumbClickable = true;
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}
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if (isDraging) {
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isDraging = false;
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_this.$thumbOuter.removeClass('lg-grabbing').addClass('lg-grab');
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}
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});
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};
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Thumbnail.prototype.enableThumbSwipe = function() {
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var _this = this;
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var startCoords = 0;
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var endCoords = 0;
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var isMoved = false;
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var tempLeft = 0;
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_this.core.$outer.find('.lg-thumb').on('touchstart.lg', function(e) {
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if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
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e.preventDefault();
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startCoords = e.originalEvent.targetTouches[0].pageX;
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_this.thumbClickable = false;
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}
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});
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_this.core.$outer.find('.lg-thumb').on('touchmove.lg', function(e) {
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if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
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e.preventDefault();
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endCoords = e.originalEvent.targetTouches[0].pageX;
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isMoved = true;
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_this.$thumbOuter.addClass('lg-dragging');
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tempLeft = _this.left;
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tempLeft = tempLeft - (endCoords - startCoords);
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if (tempLeft > (_this.thumbTotalWidth - _this.thumbOuterWidth)) {
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tempLeft = _this.thumbTotalWidth - _this.thumbOuterWidth;
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}
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if (tempLeft < 0) {
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tempLeft = 0;
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}
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// move current slide
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_this.setTranslate(tempLeft);
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}
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});
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_this.core.$outer.find('.lg-thumb').on('touchend.lg', function() {
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if (_this.thumbTotalWidth > _this.thumbOuterWidth) {
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if (isMoved) {
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isMoved = false;
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_this.$thumbOuter.removeClass('lg-dragging');
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if (Math.abs(endCoords - startCoords) < _this.core.s.swipeThreshold) {
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_this.thumbClickable = true;
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}
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_this.left = tempLeft;
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} else {
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_this.thumbClickable = true;
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}
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} else {
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_this.thumbClickable = true;
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}
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});
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};
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Thumbnail.prototype.toogle = function() {
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var _this = this;
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if (_this.core.s.toogleThumb) {
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_this.core.$outer.addClass('lg-can-toggle');
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_this.$thumbOuter.append('<span class="lg-toogle-thumb lg-icon"></span>');
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_this.core.$outer.find('.lg-toogle-thumb').on('click.lg', function() {
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_this.core.$outer.toggleClass('lg-thumb-open');
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});
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}
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};
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Thumbnail.prototype.thumbkeyPress = function() {
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var _this = this;
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$(window).on('keydown.lg.thumb', function(e) {
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if (e.keyCode === 38) {
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e.preventDefault();
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_this.core.$outer.addClass('lg-thumb-open');
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} else if (e.keyCode === 40) {
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e.preventDefault();
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_this.core.$outer.removeClass('lg-thumb-open');
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}
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});
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};
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Thumbnail.prototype.destroy = function() {
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if (this.core.s.thumbnail && this.core.$items.length > 1) {
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$(window).off('resize.lg.thumb orientationchange.lg.thumb keydown.lg.thumb');
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this.$thumbOuter.remove();
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this.core.$outer.removeClass('lg-has-thumb');
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}
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};
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$.fn.lightGallery.modules.Thumbnail = Thumbnail;
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})(jQuery, window, document);
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