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+/*!
+ * Justified Gallery - v3.2.0
+ * http://miromannino.com/projects/justified-gallery/
+ * Copyright (c) 2014 Miro Mannino
+ * Licensed under the MIT license.
+ */
+(function($) {
+
+ /* Events
+ jg.complete : called when all the gallery has been created
+ jg.resize : called when the gallery has been resized
+ */
+
+ $.fn.justifiedGallery = function (arg) {
+
+ // Default options
+ var defaults = {
+ sizeRangeSuffixes : {
+ 'lt100': '_t',
+ 'lt240': '_m',
+ 'lt320': '_n',
+ 'lt500': '',
+ 'lt640': '_z',
+ 'lt1024': '_b'
+ },
+ rowHeight : 120,
+ maxRowHeight : 0, //negative value = no limits, 0 = 1.5 * rowHeight
+ margins : 1,
+ lastRow : 'nojustify', // or can be 'justify' or 'hide'
+ justifyThreshold: 0.75, /* if row width / available space > 0.75 it will be always justified
+ (i.e. lastRow setting is not considered) */
+ fixedHeight : false,
+ captions : true,
+ cssAnimation: false,
+ imagesAnimationDuration : 300, //ignored with css animations
+ captionSettings : { //ignored with css animations
+ animationDuration : 500,
+ visibleOpacity : 0.7,
+ nonVisibleOpacity : 0.0
+ },
+ rel : null, //rewrite the rel of each analyzed links
+ target : null, //rewrite the target of all links
+ extension : /\.[^.]+$/,
+ refreshTime : 250,
+ randomize : false
+ };
+
+ function getSuffix(width, height, context) {
+ var longestSide;
+ longestSide = (width > height) ? width : height;
+ if (longestSide <= 100) {
+ return context.settings.sizeRangeSuffixes.lt100;
+ } else if (longestSide <= 240) {
+ return context.settings.sizeRangeSuffixes.lt240;
+ } else if (longestSide <= 320) {
+ return context.settings.sizeRangeSuffixes.lt320;
+ } else if (longestSide <= 500) {
+ return context.settings.sizeRangeSuffixes.lt500;
+ } else if (longestSide <= 640) {
+ return context.settings.sizeRangeSuffixes.lt640;
+ } else {
+ return context.settings.sizeRangeSuffixes.lt1024;
+ }
+ }
+
+ function onEntryMouseEnterForCaption (ev) {
+ var $caption = $(ev.currentTarget).find('.caption');
+ if (ev.data.settings.cssAnimation) {
+ $caption.addClass('caption-visible').removeClass('caption-hidden');
+ } else {
+ $caption.stop().fadeTo(ev.data.settings.captionSettings.animationDuration, ev.data.settings.captionSettings.visibleOpacity);
+ }
+ }
+
+ function onEntryMouseLeaveForCaption (ev) {
+ var $caption = $(ev.currentTarget).find('.caption');
+ if (ev.data.settings.cssAnimation) {
+ $caption.removeClass('caption-visible').removeClass('caption-hidden');
+ } else {
+ $caption.stop().fadeTo(ev.data.settings.captionSettings.animationDuration, ev.data.settings.captionSettings.nonVisibleOpacity);
+ }
+ }
+
+ function displayEntry($entry, x, y, imgWidth, imgHeight, rowHeight, context) {
+ var $image = $entry.find('img');
+ $image.css('width', imgWidth);
+ $image.css('height', imgHeight);
+ $image.css('margin-left', - imgWidth / 2);
+ $image.css('margin-top', - imgHeight / 2);
+ $entry.width(imgWidth);
+ $entry.height(rowHeight);
+ $entry.css('top', y);
+ $entry.css('left', x);
+
+ //DEBUG// console.log('displayEntry: $image.width() = ' + $image.width() + ' $image.height() = ' + $image.height());
+
+ // Image reloading for an high quality of thumbnails
+ var imageSrc = $image.attr('src');
+ var newImageSrc = imageSrc.replace(context.settings.extension, '').replace(context.usedSizeRangeRegExp, '') +
+ getSuffix(imgWidth, imgHeight, context) +
+ imageSrc.match(context.settings.extension)[0];
+
+ $image.one('error', function () {
+ //DEBUG// console.log('revert the original image');
+ $image.attr('src', $image.data('jg.originalSrc')); //revert to the original thumbnail, we got it.
+ });
+
+ var loadNewImage = function () {
+ if (imageSrc !== newImageSrc) { //load the new image after the fadeIn
+ $image.attr('src', newImageSrc);
+ }
+ };
+
+ if (context.settings.cssAnimation) {
+ $entry.addClass('entry-visible');
+ loadNewImage();
+ } else {
+ $entry.stop().fadeTo(context.settings.imagesAnimationDuration, 1.0, loadNewImage);
+ }
+
+ // Captions ------------------------------
+ var captionMouseEvents = $entry.data('jg.captionMouseEvents');
+ if (context.settings.captions === true) {
+ var $imgCaption = $entry.find('.caption');
+ if ($imgCaption.length === 0) { // Create it if it doesn't exists
+ var caption = $image.attr('alt');
+ if (typeof caption === 'undefined') caption = $entry.attr('title');
+ if (typeof caption !== 'undefined') { // Create only we found something
+ $imgCaption = $('<div class="caption">' + caption + '</div>');
+ $entry.append($imgCaption);
+ }
+ }
+
+ // Create events (we check again the $imgCaption because it can be still inexistent)
+ if ($imgCaption.length !== 0) {
+ if (!context.settings.cssAnimation) {
+ $imgCaption.stop().fadeTo(context.settings.imagesAnimationDuration, context.settings.captionSettings.nonVisibleOpacity);
+ }
+ if (typeof captionMouseEvents === 'undefined') {
+ captionMouseEvents = {
+ mouseenter: onEntryMouseEnterForCaption,
+ mouseleave: onEntryMouseLeaveForCaption
+ };
+ $entry.on('mouseenter', undefined, context, captionMouseEvents.mouseenter);
+ $entry.on('mouseleave', undefined, context, captionMouseEvents.mouseleave);
+ $entry.data('jg.captionMouseEvents', captionMouseEvents);
+ }
+ }
+ } else {
+ if (typeof captionMouseEvents !== 'undefined') {
+ $entry.off('mouseenter', undefined, context, captionMouseEvents.mouseenter);
+ $entry.off('mouseleave', undefined, context, captionMouseEvents.mouseleave);
+ $entry.removeData('jg.captionMouseEvents');
+ }
+ }
+
+ }
+
+ function prepareBuildingRow(context, isLastRow) {
+ var i, $entry, $image, imgAspectRatio, newImgW, newImgH, justify = true;
+ var minHeight = 0;
+ var availableWidth = context.galleryWidth - ((context.buildingRow.entriesBuff.length - 1) * context.settings.margins);
+ var rowHeight = availableWidth / context.buildingRow.aspectRatio;
+ var justificable = context.buildingRow.width / availableWidth > context.settings.justifyThreshold;
+
+ //Skip the last row if we can't justify it and the lastRow == 'hide'
+ if (isLastRow && context.settings.lastRow === 'hide' && !justificable) {
+ for (i = 0; i < context.buildingRow.entriesBuff.length; i++) {
+ $entry = context.buildingRow.entriesBuff[i];
+ if (context.settings.cssAnimation)
+ $entry.removeClass('entry-visible');
+ else
+ $entry.stop().fadeTo(0, 0);
+ }
+ return -1;
+ }
+
+ // With lastRow = nojustify, justify if is justificable (the images will not become too big)
+ if (isLastRow && context.settings.lastRow === 'nojustify' && !justificable) justify = false;
+
+ for (i = 0; i < context.buildingRow.entriesBuff.length; i++) {
+ $image = context.buildingRow.entriesBuff[i].find('img');
+ imgAspectRatio = $image.data('jg.imgw') / $image.data('jg.imgh');
+
+ if (justify) {
+ newImgW = rowHeight * imgAspectRatio;
+ newImgH = rowHeight;
+
+ /* With fixedHeight the newImgH must be greater than rowHeight.
+ In some cases here this is not satisfied (due to the justification).
+ But we comment it, because is better to have a shorter but justified row instead
+ to have a cropped image at the end. */
+ /*if (context.settings.fixedHeight && newImgH < context.settings.rowHeight) {
+ newImgW = context.settings.rowHeight * imgAspectRatio;
+ newImgH = context.settings.rowHeight;
+ }*/
+ } else {
+ newImgW = context.settings.rowHeight * imgAspectRatio;
+ newImgH = context.settings.rowHeight;
+ }
+
+ $image.data('jg.imgw', Math.ceil(newImgW));
+ $image.data('jg.imgh', Math.ceil(newImgH));
+ if (i === 0 || minHeight > newImgH) minHeight = newImgH;
+ }
+
+ if (context.settings.fixedHeight && minHeight > context.settings.rowHeight)
+ minHeight = context.settings.rowHeight;
+
+ return minHeight;
+ }
+
+ function rewind(context) {
+ context.lastAnalyzedIndex = -1;
+ context.buildingRow.entriesBuff = [];
+ context.buildingRow.aspectRatio = 0;
+ context.buildingRow.width = 0;
+ context.offY = 0;
+ context.firstRowFlushed = false;
+ }
+
+ function flushRow(context, isLastRow) {
+ var $entry, $image, minHeight, offX = 0;
+
+ //DEBUG// console.log('flush (width: ' + context.buildingRow.width + ', galleryWidth: ' + context.galleryWidth + ', ' + 'isLastRow: ' + isLastRow + ')');
+
+ minHeight = prepareBuildingRow(context, isLastRow);
+ if (isLastRow && context.settings.lastRow === 'hide' && minHeight === -1) {
+ context.buildingRow.entriesBuff = [];
+ context.buildingRow.aspectRatio = 0;
+ context.buildingRow.width = 0;
+ return;
+ }
+
+ if (context.settings.maxRowHeight > 0 && context.settings.maxRowHeight < minHeight)
+ minHeight = context.settings.maxRowHeight;
+ else if (context.settings.maxRowHeight === 0 && (1.5 * context.settings.rowHeight) < minHeight)
+ minHeight = 1.5 * context.settings.rowHeight;
+
+ for (var i = 0; i < context.buildingRow.entriesBuff.length; i++) {
+ $entry = context.buildingRow.entriesBuff[i];
+ $image = $entry.find('img');
+ displayEntry($entry, offX, context.offY, $image.data('jg.imgw'), $image.data('jg.imgh'), minHeight, context);
+ offX += $image.data('jg.imgw') + context.settings.margins;
+ }
+
+ //Gallery Height
+ context.$gallery.height(context.offY + minHeight +
+ (context.spinner.active ? context.spinner.$el.innerHeight() : 0)
+ );
+
+ if(!isLastRow) {
+ //Ready for a new row
+ context.offY += minHeight + context.settings.margins;
+
+ //DEBUG// console.log('minHeight: ' + minHeight + ' offY: ' + context.offY);
+
+ context.buildingRow.entriesBuff = []; //clear the array creating a new one
+ context.buildingRow.aspectRatio = 0;
+ context.buildingRow.width = 0;
+ context.firstRowFlushed = true;
+ context.$gallery.trigger('jg.rowflush');
+ }
+ }
+
+ function checkWidth(context) {
+ context.checkWidthIntervalId = setInterval(function () {
+ var galleryWidth = parseInt(context.$gallery.width(), 10);
+ if (context.galleryWidth !== galleryWidth) {
+ //DEBUG// console.log("resize. old: " + context.galleryWidth + " new: " + galleryWidth);
+
+ context.galleryWidth = galleryWidth;
+ rewind(context);
+
+ // Restart to analyze
+ startImgAnalyzer(context, true);
+ }
+ }, context.settings.refreshTime);
+ }
+
+ function startLoadingSpinnerAnimation(spinnerContext) {
+ clearInterval(spinnerContext.intervalId);
+ spinnerContext.intervalId = setInterval(function () {
+ if (spinnerContext.phase < spinnerContext.$points.length)
+ spinnerContext.$points.eq(spinnerContext.phase).fadeTo(spinnerContext.timeslot, 1);
+ else
+ spinnerContext.$points.eq(spinnerContext.phase - spinnerContext.$points.length).fadeTo(spinnerContext.timeslot, 0);
+ spinnerContext.phase = (spinnerContext.phase + 1) % (spinnerContext.$points.length * 2);
+ }, spinnerContext.timeslot);
+ }
+
+ function stopLoadingSpinnerAnimation(spinnerContext) {
+ clearInterval(spinnerContext.intervalId);
+ spinnerContext.intervalId = null;
+ }
+
+ function stopImgAnalyzerStarter(context) {
+ context.yield.flushed = 0;
+ if (context.imgAnalyzerTimeout !== null) clearTimeout(context.imgAnalyzerTimeout);
+ }
+
+ function startImgAnalyzer(context, isForResize) {
+ stopImgAnalyzerStarter(context);
+ context.imgAnalyzerTimeout = setTimeout(function () { analyzeImages(context, isForResize); }, 0.001);
+ analyzeImages(context, isForResize);
+ }
+
+ function analyzeImages(context, isForResize) {
+
+ //DEBUG//
+ /*var rnd = parseInt(Math.random() * 10000, 10);
+ //DEBUG// console.log('analyzeImages ' + rnd + ' start');
+ //DEBUG// console.log('images status: ');
+ for (var i = 0; i < context.entries.length; i++) {
+ var $entry = $(context.entries[i]);
+ var $image = $entry.find('img');
+ //DEBUG// console.log(i + ' (alt: ' + $image.attr('alt') + 'loaded: ' + $image.data('jg.loaded') + ')');
+ }*/
+
+ /* The first row */
+ var isLastRow;
+
+ for (var i = context.lastAnalyzedIndex + 1; i < context.entries.length; i++) {
+ var $entry = $(context.entries[i]);
+ var $image = $entry.find('img');
+
+ if ($image.data('jg.loaded') === true) {
+ isLastRow = i >= context.entries.length - 1;
+
+ var availableWidth = context.galleryWidth - ((context.buildingRow.entriesBuff.length - 1) * context.settings.margins);
+ var imgAspectRatio = $image.data('jg.imgw') / $image.data('jg.imgh');
+ if (availableWidth / (context.buildingRow.aspectRatio + imgAspectRatio) < context.settings.rowHeight) {
+ flushRow(context, isLastRow);
+
+ if(++context.yield.flushed >= context.yield.every) {
+ //DEBUG// console.log("yield");
+ startImgAnalyzer(context, isForResize);
+ return;
+ }
+ }
+
+ context.buildingRow.entriesBuff.push($entry);
+ context.buildingRow.aspectRatio += imgAspectRatio;
+ context.buildingRow.width += imgAspectRatio * context.settings.rowHeight;
+ context.lastAnalyzedIndex = i;
+
+ } else if ($image.data('jg.loaded') !== 'error') {
+ return;
+ }
+ }
+
+ // Last row flush (the row is not full)
+ if (context.buildingRow.entriesBuff.length > 0) flushRow(context, isLastRow);
+
+ if (context.spinner.active) {
+ context.spinner.active = false;
+ context.$gallery.height(context.$gallery.height() - context.spinner.$el.innerHeight());
+ context.spinner.$el.detach();
+ stopLoadingSpinnerAnimation(context.spinner);
+ }
+
+ /* Stop, if there is, the timeout to start the analyzeImages.
+ This is because an image can be set loaded, and the timeout can be set,
+ but this image can be analyzed yet.
+ */
+ stopImgAnalyzerStarter(context);
+
+ //On complete callback
+ if (!isForResize) context.$gallery.trigger('jg.complete'); else context.$gallery.trigger('jg.resize');
+
+ //DEBUG// console.log('analyzeImages ' + rnd + ' end');
+ }
+
+ function checkSettings (context) {
+
+ function checkSuffixesRange(range) {
+ if (typeof context.settings.sizeRangeSuffixes[range] !== 'string')
+ throw 'sizeRangeSuffixes.' + range + ' must be a string';
+ }
+
+ function checkOrConvertNumber(parent, settingName) {
+ if (typeof parent[settingName] === 'string') {
+ parent[settingName] = parseFloat(parent[settingName], 10);
+ if (isNaN(parent[settingName])) throw 'invalid number for ' + settingName;
+ } else if (typeof parent[settingName] === 'number') {
+ if (isNaN(parent[settingName])) throw 'invalid number for ' + settingName;
+ } else {
+ throw settingName + ' must be a number';
+ }
+ }
+
+ if (typeof context.settings.sizeRangeSuffixes !== 'object')
+ throw 'sizeRangeSuffixes must be defined and must be an object';
+
+ checkSuffixesRange('lt100');
+ checkSuffixesRange('lt240');
+ checkSuffixesRange('lt320');
+ checkSuffixesRange('lt500');
+ checkSuffixesRange('lt640');
+ checkSuffixesRange('lt1024');
+
+ checkOrConvertNumber(context.settings, 'rowHeight');
+ checkOrConvertNumber(context.settings, 'maxRowHeight');
+ checkOrConvertNumber(context.settings, 'margins');
+
+ if (context.settings.lastRow !== 'nojustify' &&
+ context.settings.lastRow !== 'justify' &&
+ context.settings.lastRow !== 'hide') {
+ throw 'lastRow must be "nojustify", "justify" or "hide"';
+ }
+
+ checkOrConvertNumber(context.settings, 'justifyThreshold');
+ if (context.settings.justifyThreshold < 0 || context.settings.justifyThreshold > 1)
+ throw 'justifyThreshold must be in the interval [0,1]';
+ if (typeof context.settings.cssAnimation !== 'boolean') {
+ throw 'cssAnimation must be a boolean';
+ }
+
+ checkOrConvertNumber(context.settings.captionSettings, 'animationDuration');
+ checkOrConvertNumber(context.settings, 'imagesAnimationDuration');
+
+ checkOrConvertNumber(context.settings.captionSettings, 'visibleOpacity');
+ if (context.settings.captionSettings.visibleOpacity < 0 || context.settings.captionSettings.visibleOpacity > 1)
+ throw 'captionSettings.visibleOpacity must be in the interval [0, 1]';
+
+ checkOrConvertNumber(context.settings.captionSettings, 'nonVisibleOpacity');
+ if (context.settings.captionSettings.visibleOpacity < 0 || context.settings.captionSettings.visibleOpacity > 1)
+ throw 'captionSettings.nonVisibleOpacity must be in the interval [0, 1]';
+
+ if (typeof context.settings.fixedHeight !== 'boolean') {
+ throw 'fixedHeight must be a boolean';
+ }
+
+ if (typeof context.settings.captions !== 'boolean') {
+ throw 'captions must be a boolean';
+ }
+
+ checkOrConvertNumber(context.settings, 'refreshTime');
+
+ if (typeof context.settings.randomize !== 'boolean') {
+ throw 'randomize must be a boolean';
+ }
+
+ }
+
+ return this.each(function (index, gallery) {
+ var $gallery = $(gallery);
+ $gallery.addClass('justified-gallery');
+
+ var context = $gallery.data('jg.context');
+ if (typeof context === 'undefined') {
+
+ if (typeof arg !== 'undefined' && arg !== null && typeof arg !== 'object')
+ throw 'The argument must be an object';
+
+ // Spinner init
+ var $spinner = $('<div class="spinner"><span></span><span></span><span></span></div>');
+
+ //Context init
+ context = {
+ settings : $.extend({}, defaults, arg),
+ imgAnalyzerTimeout : null,
+ entries : null,
+ buildingRow : {
+ entriesBuff : [],
+ width : 0,
+ aspectRatio : 0
+ },
+ lastAnalyzedIndex : -1,
+ firstRowFlushed : false,
+ yield : {
+ every : 2, /* do a flush every context.yield.every flushes (
+ * must be greater than 1, else the analyzeImages will loop */
+ flushed : 0 //flushed rows without a yield
+ },
+ offY : 0,
+ spinner : {
+ active : false,
+ phase : 0,
+ timeslot : 150,
+ $el : $spinner,
+ $points : $spinner.find('span'),
+ intervalId : null
+ },
+ checkWidthIntervalId : null,
+ galleryWidth : $gallery.width(),
+ $gallery : $gallery
+ };
+
+ $gallery.data('jg.context', context);
+
+ } else if (arg === 'norewind') {
+ // In this case we don't rewind, and analyze all the images
+ } else {
+ //redmatrix - this makes the gallery jump back to top after new content is loaded
+ context.settings = $.extend({}, context.settings, arg);
+ rewind(context);
+ }
+
+ checkSettings(context);
+
+ context.entries = $gallery.find('> a').toArray();
+ if (context.entries.length === 0) return;
+
+ // Randomize
+ if (context.settings.randomize) {
+ context.entries.sort(function () { return Math.random() * 2 - 1; });
+ $.each(context.entries, function () {
+ $(this).appendTo($gallery);
+ });
+ }
+
+ context.usedSizeRangeRegExp = new RegExp("(" +
+ context.settings.sizeRangeSuffixes.lt100 + "|" +
+ context.settings.sizeRangeSuffixes.lt240 + "|" +
+ context.settings.sizeRangeSuffixes.lt320 + "|" +
+ context.settings.sizeRangeSuffixes.lt500 + "|" +
+ context.settings.sizeRangeSuffixes.lt640 + "|" +
+ context.settings.sizeRangeSuffixes.lt1024 + ")$"
+ );
+
+ if (context.settings.maxRowHeight > 0 && context.settings.maxRowHeight < context.settings.rowHeight)
+ context.settings.maxRowHeight = context.settings.rowHeight;
+
+ var imagesToLoad = false;
+ $.each(context.entries, function (index, entry) {
+ var $entry = $(entry);
+ var $image = $entry.find('img');
+
+ if ($image.data('jg.loaded') !== true) {
+ $image.data('jg.loaded', false);
+
+ //DEBUG// console.log('listed ' + $image.attr('alt'));
+
+ imagesToLoad = true;
+ // Spinner start
+ if (context.spinner.active === false) {
+ context.spinner.active = true;
+ $gallery.append(context.spinner.$el);
+ $gallery.height(context.offY + context.spinner.$el.innerHeight());
+ startLoadingSpinnerAnimation(context.spinner);
+ }
+
+ // Link Rel global overwrite
+ if (context.settings.rel !== null) $entry.attr('rel', context.settings.rel);
+
+ // Link Target global overwrite
+ if (context.settings.target !== null) $entry.attr('target', context.settings.target);
+
+ // Image src
+ var imageSrc = (typeof $image.data('safe-src') !== 'undefined') ? $image.data('safe-src') : $image.attr('src');
+ $image.data('jg.originalSrc', imageSrc);
+ $image.attr('src', imageSrc);
+
+ /* Check if the image is loaded or not using another image object.
+ We cannot use the 'complete' image property, because some browsers,
+ with a 404 set complete = true */
+ var loadImg = new Image();
+ var $loadImg = $(loadImg);
+ $loadImg.one('load', function imgLoaded () {
+ //DEBUG// console.log('img load (alt: ' + $image.attr('alt') + ')');
+ $image.off('load error');
+ $image.data('jg.imgw', loadImg.width);
+ $image.data('jg.imgh', loadImg.height);
+ $image.data('jg.loaded', true);
+ startImgAnalyzer(context, false);
+ });
+ $loadImg.one('error', function imgLoadError () {
+ //DEBUG// console.log('img error (alt: ' + $image.attr('alt') + ')');
+ $image.off('load error');
+ $image.data('jg.loaded', 'error');
+ startImgAnalyzer(context, false);
+ });
+ loadImg.src = imageSrc;
+
+ }
+
+ });
+
+ if (!imagesToLoad) startImgAnalyzer(context, false);
+ checkWidth(context);
+ });
+
+ };
+
+}(jQuery));