1246 lines
45 KiB
JavaScript
1246 lines
45 KiB
JavaScript
/*!
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* justifiedGallery - v3.8.1
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* http://miromannino.github.io/Justified-Gallery/
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* Copyright (c) 2020 Miro Mannino
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* Licensed under the MIT license.
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*/
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(function (factory) {
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define(['jquery'], factory);
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} else if (typeof module === 'object' && module.exports) {
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// Node/CommonJS
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module.exports = function (root, jQuery) {
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if (jQuery === undefined) {
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// require('jQuery') returns a factory that requires window to
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// build a jQuery instance, we normalize how we use modules
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// that require this pattern but the window provided is a noop
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// if it's defined (how jquery works)
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if (typeof window !== 'undefined') {
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jQuery = require('jquery');
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}
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else {
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jQuery = require('jquery')(root);
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}
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}
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factory(jQuery);
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return jQuery;
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};
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} else {
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// Browser globals
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factory(jQuery);
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}
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}(function ($) {
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/**
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* Justified Gallery controller constructor
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*
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* @param $gallery the gallery to build
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* @param settings the settings (the defaults are in JustifiedGallery.defaults)
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* @constructor
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*/
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var JustifiedGallery = function ($gallery, settings) {
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this.settings = settings;
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this.checkSettings();
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this.imgAnalyzerTimeout = null;
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this.entries = null;
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this.buildingRow = {
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entriesBuff: [],
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width: 0,
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height: 0,
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aspectRatio: 0
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};
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this.lastFetchedEntry = null;
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this.lastAnalyzedIndex = -1;
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this.yield = {
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every: 2, // do a flush every n flushes (must be greater than 1)
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flushed: 0 // flushed rows without a yield
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};
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this.border = settings.border >= 0 ? settings.border : settings.margins;
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this.maxRowHeight = this.retrieveMaxRowHeight();
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this.suffixRanges = this.retrieveSuffixRanges();
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this.offY = this.border;
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this.rows = 0;
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this.spinner = {
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phase: 0,
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timeSlot: 150,
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$el: $('<div class="jg-spinner"><span></span><span></span><span></span></div>'),
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intervalId: null
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};
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this.scrollBarOn = false;
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this.checkWidthIntervalId = null;
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this.galleryWidth = $gallery.width();
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this.$gallery = $gallery;
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};
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/** @returns {String} the best suffix given the width and the height */
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JustifiedGallery.prototype.getSuffix = function (width, height) {
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var longestSide, i;
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longestSide = (width > height) ? width : height;
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for (i = 0; i < this.suffixRanges.length; i++) {
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if (longestSide <= this.suffixRanges[i]) {
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return this.settings.sizeRangeSuffixes[this.suffixRanges[i]];
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}
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}
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return this.settings.sizeRangeSuffixes[this.suffixRanges[i - 1]];
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};
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/**
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* Remove the suffix from the string
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*
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* @returns {string} a new string without the suffix
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*/
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JustifiedGallery.prototype.removeSuffix = function (str, suffix) {
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return str.substring(0, str.length - suffix.length);
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};
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/**
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* @returns {boolean} a boolean to say if the suffix is contained in the str or not
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*/
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JustifiedGallery.prototype.endsWith = function (str, suffix) {
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return str.indexOf(suffix, str.length - suffix.length) !== -1;
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};
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/**
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* Get the used suffix of a particular url
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*
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* @param str
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* @returns {String} return the used suffix
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*/
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JustifiedGallery.prototype.getUsedSuffix = function (str) {
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for (var si in this.settings.sizeRangeSuffixes) {
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if (this.settings.sizeRangeSuffixes.hasOwnProperty(si)) {
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if (this.settings.sizeRangeSuffixes[si].length === 0) continue;
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if (this.endsWith(str, this.settings.sizeRangeSuffixes[si])) return this.settings.sizeRangeSuffixes[si];
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}
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}
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return '';
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};
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/**
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* Given an image src, with the width and the height, returns the new image src with the
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* best suffix to show the best quality thumbnail.
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*
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* @returns {String} the suffix to use
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*/
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JustifiedGallery.prototype.newSrc = function (imageSrc, imgWidth, imgHeight, image) {
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var newImageSrc;
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if (this.settings.thumbnailPath) {
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newImageSrc = this.settings.thumbnailPath(imageSrc, imgWidth, imgHeight, image);
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} else {
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var matchRes = imageSrc.match(this.settings.extension);
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var ext = (matchRes !== null) ? matchRes[0] : '';
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newImageSrc = imageSrc.replace(this.settings.extension, '');
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newImageSrc = this.removeSuffix(newImageSrc, this.getUsedSuffix(newImageSrc));
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newImageSrc += this.getSuffix(imgWidth, imgHeight) + ext;
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}
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return newImageSrc;
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};
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/**
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* Shows the images that is in the given entry
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*
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* @param $entry the entry
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* @param callback the callback that is called when the show animation is finished
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*/
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JustifiedGallery.prototype.showImg = function ($entry, callback) {
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if (this.settings.cssAnimation) {
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$entry.addClass('jg-entry-visible');
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if (callback) callback();
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} else {
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$entry.stop().fadeTo(this.settings.imagesAnimationDuration, 1.0, callback);
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$entry.find(this.settings.imgSelector).stop().fadeTo(this.settings.imagesAnimationDuration, 1.0, callback);
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}
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};
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/**
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* Extract the image src form the image, looking from the 'safe-src', and if it can't be found, from the
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* 'src' attribute. It saves in the image data the 'jg.originalSrc' field, with the extracted src.
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*
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* @param $image the image to analyze
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* @returns {String} the extracted src
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*/
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JustifiedGallery.prototype.extractImgSrcFromImage = function ($image) {
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var imageSrc = $image.data('safe-src');
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var imageSrcLoc = 'data-safe-src';
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if (typeof imageSrc === 'undefined') {
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imageSrc = $image.attr('src');
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imageSrcLoc = 'src';
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}
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$image.data('jg.originalSrc', imageSrc); // this is saved for the destroy method
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$image.data('jg.src', imageSrc); // this will change overtime
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$image.data('jg.originalSrcLoc', imageSrcLoc); // this is saved for the destroy method
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return imageSrc;
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};
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/** @returns {jQuery} the image in the given entry */
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JustifiedGallery.prototype.imgFromEntry = function ($entry) {
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var $img = $entry.find(this.settings.imgSelector);
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return $img.length === 0 ? null : $img;
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};
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/** @returns {jQuery} the caption in the given entry */
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JustifiedGallery.prototype.captionFromEntry = function ($entry) {
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var $caption = $entry.find('> .jg-caption');
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return $caption.length === 0 ? null : $caption;
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};
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/**
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* Display the entry
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*
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* @param {jQuery} $entry the entry to display
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* @param {int} x the x position where the entry must be positioned
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* @param y the y position where the entry must be positioned
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* @param imgWidth the image width
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* @param imgHeight the image height
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* @param rowHeight the row height of the row that owns the entry
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*/
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JustifiedGallery.prototype.displayEntry = function ($entry, x, y, imgWidth, imgHeight, rowHeight) {
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$entry.width(imgWidth);
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$entry.height(rowHeight);
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$entry.css('top', y);
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$entry.css('left', x);
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var $image = this.imgFromEntry($entry);
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if ($image !== null) {
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$image.css('width', imgWidth);
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$image.css('height', imgHeight);
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$image.css('margin-left', - imgWidth / 2);
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$image.css('margin-top', - imgHeight / 2);
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// Image reloading for an high quality of thumbnails
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var imageSrc = $image.data('jg.src');
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if (imageSrc) {
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imageSrc = this.newSrc(imageSrc, imgWidth, imgHeight, $image[0]);
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$image.one('error', function () {
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this.resetImgSrc($image); //revert to the original thumbnail
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});
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var loadNewImage = function () {
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// if (imageSrc !== newImageSrc) {
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$image.attr('src', imageSrc);
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// }
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};
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if ($entry.data('jg.loaded') === 'skipped' && imageSrc) {
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this.onImageEvent(imageSrc, (function() {
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this.showImg($entry, loadNewImage); //load the new image after the fadeIn
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$entry.data('jg.loaded', true);
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}).bind(this));
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} else {
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this.showImg($entry, loadNewImage); //load the new image after the fadeIn
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}
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}
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} else {
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this.showImg($entry);
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}
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this.displayEntryCaption($entry);
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};
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/**
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* Display the entry caption. If the caption element doesn't exists, it creates the caption using the 'alt'
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* or the 'title' attributes.
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*
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* @param {jQuery} $entry the entry to process
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*/
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JustifiedGallery.prototype.displayEntryCaption = function ($entry) {
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var $image = this.imgFromEntry($entry);
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if ($image !== null && this.settings.captions) {
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var $imgCaption = this.captionFromEntry($entry);
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// Create it if it doesn't exists
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if ($imgCaption === null) {
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var caption = $image.attr('alt');
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if (!this.isValidCaption(caption)) caption = $entry.attr('title');
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if (this.isValidCaption(caption)) { // Create only we found something
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$imgCaption = $('<div class="jg-caption">' + caption + '</div>');
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$entry.append($imgCaption);
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$entry.data('jg.createdCaption', true);
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}
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}
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// Create events (we check again the $imgCaption because it can be still inexistent)
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if ($imgCaption !== null) {
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if (!this.settings.cssAnimation) $imgCaption.stop().fadeTo(0, this.settings.captionSettings.nonVisibleOpacity);
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this.addCaptionEventsHandlers($entry);
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}
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} else {
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this.removeCaptionEventsHandlers($entry);
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}
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};
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/**
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* Validates the caption
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*
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* @param caption The caption that should be validated
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* @return {boolean} Validation result
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*/
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JustifiedGallery.prototype.isValidCaption = function (caption) {
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return (typeof caption !== 'undefined' && caption.length > 0);
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};
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/**
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* The callback for the event 'mouseenter'. It assumes that the event currentTarget is an entry.
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* It shows the caption using jQuery (or using CSS if it is configured so)
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*
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* @param {Event} eventObject the event object
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*/
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JustifiedGallery.prototype.onEntryMouseEnterForCaption = function (eventObject) {
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var $caption = this.captionFromEntry($(eventObject.currentTarget));
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if (this.settings.cssAnimation) {
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$caption.addClass('jg-caption-visible').removeClass('jg-caption-hidden');
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} else {
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$caption.stop().fadeTo(this.settings.captionSettings.animationDuration,
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this.settings.captionSettings.visibleOpacity);
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}
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};
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/**
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* The callback for the event 'mouseleave'. It assumes that the event currentTarget is an entry.
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* It hides the caption using jQuery (or using CSS if it is configured so)
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*
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* @param {Event} eventObject the event object
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*/
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JustifiedGallery.prototype.onEntryMouseLeaveForCaption = function (eventObject) {
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var $caption = this.captionFromEntry($(eventObject.currentTarget));
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if (this.settings.cssAnimation) {
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$caption.removeClass('jg-caption-visible').removeClass('jg-caption-hidden');
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} else {
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$caption.stop().fadeTo(this.settings.captionSettings.animationDuration,
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this.settings.captionSettings.nonVisibleOpacity);
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}
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};
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/**
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* Add the handlers of the entry for the caption
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*
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* @param $entry the entry to modify
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*/
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JustifiedGallery.prototype.addCaptionEventsHandlers = function ($entry) {
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var captionMouseEvents = $entry.data('jg.captionMouseEvents');
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if (typeof captionMouseEvents === 'undefined') {
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captionMouseEvents = {
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mouseenter: $.proxy(this.onEntryMouseEnterForCaption, this),
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mouseleave: $.proxy(this.onEntryMouseLeaveForCaption, this)
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};
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$entry.on('mouseenter', undefined, undefined, captionMouseEvents.mouseenter);
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$entry.on('mouseleave', undefined, undefined, captionMouseEvents.mouseleave);
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$entry.data('jg.captionMouseEvents', captionMouseEvents);
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}
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};
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/**
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* Remove the handlers of the entry for the caption
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*
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* @param $entry the entry to modify
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*/
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JustifiedGallery.prototype.removeCaptionEventsHandlers = function ($entry) {
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var captionMouseEvents = $entry.data('jg.captionMouseEvents');
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if (typeof captionMouseEvents !== 'undefined') {
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$entry.off('mouseenter', undefined, captionMouseEvents.mouseenter);
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$entry.off('mouseleave', undefined, captionMouseEvents.mouseleave);
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$entry.removeData('jg.captionMouseEvents');
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}
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};
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/**
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* Clear the building row data to be used for a new row
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*/
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JustifiedGallery.prototype.clearBuildingRow = function () {
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this.buildingRow.entriesBuff = [];
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this.buildingRow.aspectRatio = 0;
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this.buildingRow.width = 0;
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};
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/**
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* Justify the building row, preparing it to
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*
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* @param isLastRow
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* @param hiddenRow undefined or false for normal behavior. hiddenRow = true to hide the row.
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* @returns a boolean to know if the row has been justified or not
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*/
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JustifiedGallery.prototype.prepareBuildingRow = function (isLastRow, hiddenRow) {
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var i, $entry, imgAspectRatio, newImgW, newImgH, justify = true;
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var minHeight = 0;
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var availableWidth = this.galleryWidth - 2 * this.border - (
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(this.buildingRow.entriesBuff.length - 1) * this.settings.margins);
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var rowHeight = availableWidth / this.buildingRow.aspectRatio;
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var defaultRowHeight = this.settings.rowHeight;
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var justifiable = this.buildingRow.width / availableWidth > this.settings.justifyThreshold;
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//Skip the last row if we can't justify it and the lastRow == 'hide'
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if (hiddenRow || (isLastRow && this.settings.lastRow === 'hide' && !justifiable)) {
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for (i = 0; i < this.buildingRow.entriesBuff.length; i++) {
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$entry = this.buildingRow.entriesBuff[i];
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if (this.settings.cssAnimation)
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$entry.removeClass('jg-entry-visible');
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else {
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$entry.stop().fadeTo(0, 0.1);
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$entry.find('> img, > a > img').fadeTo(0, 0);
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}
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}
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return -1;
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}
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// With lastRow = nojustify, justify if is justificable (the images will not become too big)
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if (isLastRow && !justifiable && this.settings.lastRow !== 'justify' && this.settings.lastRow !== 'hide') {
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justify = false;
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if (this.rows > 0) {
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defaultRowHeight = (this.offY - this.border - this.settings.margins * this.rows) / this.rows;
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justify = defaultRowHeight * this.buildingRow.aspectRatio / availableWidth > this.settings.justifyThreshold;
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}
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}
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for (i = 0; i < this.buildingRow.entriesBuff.length; i++) {
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$entry = this.buildingRow.entriesBuff[i];
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imgAspectRatio = $entry.data('jg.width') / $entry.data('jg.height');
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if (justify) {
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newImgW = (i === this.buildingRow.entriesBuff.length - 1) ? availableWidth : rowHeight * imgAspectRatio;
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newImgH = rowHeight;
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} else {
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newImgW = defaultRowHeight * imgAspectRatio;
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newImgH = defaultRowHeight;
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}
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availableWidth -= Math.round(newImgW);
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$entry.data('jg.jwidth', Math.round(newImgW));
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$entry.data('jg.jheight', Math.ceil(newImgH));
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if (i === 0 || minHeight > newImgH) minHeight = newImgH;
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}
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this.buildingRow.height = minHeight;
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return justify;
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};
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/**
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* Flush a row: justify it, modify the gallery height accordingly to the row height
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*
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* @param isLastRow
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* @param hiddenRow undefined or false for normal behavior. hiddenRow = true to hide the row.
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*/
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JustifiedGallery.prototype.flushRow = function (isLastRow, hiddenRow) {
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var settings = this.settings;
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var $entry, buildingRowRes, offX = this.border, i;
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buildingRowRes = this.prepareBuildingRow(isLastRow, hiddenRow);
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if (hiddenRow || (isLastRow && settings.lastRow === 'hide' && buildingRowRes === -1)) {
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this.clearBuildingRow();
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return;
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}
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if (this.maxRowHeight) {
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if (this.maxRowHeight < this.buildingRow.height) this.buildingRow.height = this.maxRowHeight;
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}
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//Align last (unjustified) row
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if (isLastRow && (settings.lastRow === 'center' || settings.lastRow === 'right')) {
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var availableWidth = this.galleryWidth - 2 * this.border - (this.buildingRow.entriesBuff.length - 1) * settings.margins;
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for (i = 0; i < this.buildingRow.entriesBuff.length; i++) {
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$entry = this.buildingRow.entriesBuff[i];
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availableWidth -= $entry.data('jg.jwidth');
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}
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if (settings.lastRow === 'center')
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offX += Math.round(availableWidth / 2);
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else if (settings.lastRow === 'right')
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offX += availableWidth;
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}
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var lastEntryIdx = this.buildingRow.entriesBuff.length - 1;
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for (i = 0; i <= lastEntryIdx; i++) {
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$entry = this.buildingRow.entriesBuff[this.settings.rtl ? lastEntryIdx - i : i];
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this.displayEntry($entry, offX, this.offY, $entry.data('jg.jwidth'), $entry.data('jg.jheight'), this.buildingRow.height);
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offX += $entry.data('jg.jwidth') + settings.margins;
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}
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//Gallery Height
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this.galleryHeightToSet = this.offY + this.buildingRow.height + this.border;
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this.setGalleryTempHeight(this.galleryHeightToSet + this.getSpinnerHeight());
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if (!isLastRow || (this.buildingRow.height <= settings.rowHeight && buildingRowRes)) {
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//Ready for a new row
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this.offY += this.buildingRow.height + settings.margins;
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this.rows += 1;
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this.clearBuildingRow();
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this.settings.triggerEvent.call(this, 'jg.rowflush');
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}
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};
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// Scroll position not restoring: https://github.com/miromannino/Justified-Gallery/issues/221
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var galleryPrevStaticHeight = 0;
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JustifiedGallery.prototype.rememberGalleryHeight = function () {
|
|
galleryPrevStaticHeight = this.$gallery.height();
|
|
this.$gallery.height(galleryPrevStaticHeight);
|
|
};
|
|
|
|
// grow only
|
|
JustifiedGallery.prototype.setGalleryTempHeight = function (height) {
|
|
galleryPrevStaticHeight = Math.max(height, galleryPrevStaticHeight);
|
|
this.$gallery.height(galleryPrevStaticHeight);
|
|
};
|
|
|
|
JustifiedGallery.prototype.setGalleryFinalHeight = function (height) {
|
|
galleryPrevStaticHeight = height;
|
|
this.$gallery.height(height);
|
|
};
|
|
|
|
/**
|
|
* Checks the width of the gallery container, to know if a new justification is needed
|
|
*/
|
|
JustifiedGallery.prototype.checkWidth = function () {
|
|
this.checkWidthIntervalId = setInterval($.proxy(function () {
|
|
|
|
// if the gallery is not currently visible, abort.
|
|
if (!this.$gallery.is(":visible")) return;
|
|
|
|
var galleryWidth = parseFloat(this.$gallery.width());
|
|
if (Math.abs(galleryWidth - this.galleryWidth) > this.settings.refreshSensitivity) {
|
|
this.galleryWidth = galleryWidth;
|
|
this.rewind();
|
|
|
|
this.rememberGalleryHeight();
|
|
|
|
// Restart to analyze
|
|
this.startImgAnalyzer(true);
|
|
}
|
|
}, this), this.settings.refreshTime);
|
|
};
|
|
|
|
/**
|
|
* @returns {boolean} a boolean saying if the spinner is active or not
|
|
*/
|
|
JustifiedGallery.prototype.isSpinnerActive = function () {
|
|
return this.spinner.intervalId !== null;
|
|
};
|
|
|
|
/**
|
|
* @returns {int} the spinner height
|
|
*/
|
|
JustifiedGallery.prototype.getSpinnerHeight = function () {
|
|
return this.spinner.$el.innerHeight();
|
|
};
|
|
|
|
/**
|
|
* Stops the spinner animation and modify the gallery height to exclude the spinner
|
|
*/
|
|
JustifiedGallery.prototype.stopLoadingSpinnerAnimation = function () {
|
|
clearInterval(this.spinner.intervalId);
|
|
this.spinner.intervalId = null;
|
|
this.setGalleryTempHeight(this.$gallery.height() - this.getSpinnerHeight());
|
|
this.spinner.$el.detach();
|
|
};
|
|
|
|
/**
|
|
* Starts the spinner animation
|
|
*/
|
|
JustifiedGallery.prototype.startLoadingSpinnerAnimation = function () {
|
|
var spinnerContext = this.spinner;
|
|
var $spinnerPoints = spinnerContext.$el.find('span');
|
|
clearInterval(spinnerContext.intervalId);
|
|
this.$gallery.append(spinnerContext.$el);
|
|
this.setGalleryTempHeight(this.offY + this.buildingRow.height + this.getSpinnerHeight());
|
|
spinnerContext.intervalId = setInterval(function () {
|
|
if (spinnerContext.phase < $spinnerPoints.length) {
|
|
$spinnerPoints.eq(spinnerContext.phase).fadeTo(spinnerContext.timeSlot, 1);
|
|
} else {
|
|
$spinnerPoints.eq(spinnerContext.phase - $spinnerPoints.length).fadeTo(spinnerContext.timeSlot, 0);
|
|
}
|
|
spinnerContext.phase = (spinnerContext.phase + 1) % ($spinnerPoints.length * 2);
|
|
}, spinnerContext.timeSlot);
|
|
};
|
|
|
|
/**
|
|
* Rewind the image analysis to start from the first entry.
|
|
*/
|
|
JustifiedGallery.prototype.rewind = function () {
|
|
this.lastFetchedEntry = null;
|
|
this.lastAnalyzedIndex = -1;
|
|
this.offY = this.border;
|
|
this.rows = 0;
|
|
this.clearBuildingRow();
|
|
};
|
|
|
|
/**
|
|
* @returns {String} `settings.selector` rejecting spinner element
|
|
*/
|
|
JustifiedGallery.prototype.getSelectorWithoutSpinner = function () {
|
|
return this.settings.selector + ', div:not(.jg-spinner)';
|
|
};
|
|
|
|
/**
|
|
* @returns {Array} all entries matched by `settings.selector`
|
|
*/
|
|
JustifiedGallery.prototype.getAllEntries = function () {
|
|
var selector = this.getSelectorWithoutSpinner();
|
|
return this.$gallery.children(selector).toArray();
|
|
};
|
|
|
|
/**
|
|
* Update the entries searching it from the justified gallery HTML element
|
|
*
|
|
* @param norewind if norewind only the new entries will be changed (i.e. randomized, sorted or filtered)
|
|
* @returns {boolean} true if some entries has been founded
|
|
*/
|
|
JustifiedGallery.prototype.updateEntries = function (norewind) {
|
|
var newEntries;
|
|
|
|
if (norewind && this.lastFetchedEntry != null) {
|
|
var selector = this.getSelectorWithoutSpinner();
|
|
newEntries = $(this.lastFetchedEntry).nextAll(selector).toArray();
|
|
} else {
|
|
this.entries = [];
|
|
newEntries = this.getAllEntries();
|
|
}
|
|
|
|
if (newEntries.length > 0) {
|
|
|
|
// Sort or randomize
|
|
if ($.isFunction(this.settings.sort)) {
|
|
newEntries = this.sortArray(newEntries);
|
|
} else if (this.settings.randomize) {
|
|
newEntries = this.shuffleArray(newEntries);
|
|
}
|
|
this.lastFetchedEntry = newEntries[newEntries.length - 1];
|
|
|
|
// Filter
|
|
if (this.settings.filter) {
|
|
newEntries = this.filterArray(newEntries);
|
|
} else {
|
|
this.resetFilters(newEntries);
|
|
}
|
|
|
|
}
|
|
|
|
this.entries = this.entries.concat(newEntries);
|
|
return true;
|
|
};
|
|
|
|
/**
|
|
* Apply the entries order to the DOM, iterating the entries and appending the images
|
|
*
|
|
* @param entries the entries that has been modified and that must be re-ordered in the DOM
|
|
*/
|
|
JustifiedGallery.prototype.insertToGallery = function (entries) {
|
|
var that = this;
|
|
$.each(entries, function () {
|
|
$(this).appendTo(that.$gallery);
|
|
});
|
|
};
|
|
|
|
/**
|
|
* Shuffle the array using the Fisher-Yates shuffle algorithm
|
|
*
|
|
* @param a the array to shuffle
|
|
* @return the shuffled array
|
|
*/
|
|
JustifiedGallery.prototype.shuffleArray = function (a) {
|
|
var i, j, temp;
|
|
for (i = a.length - 1; i > 0; i--) {
|
|
j = Math.floor(Math.random() * (i + 1));
|
|
temp = a[i];
|
|
a[i] = a[j];
|
|
a[j] = temp;
|
|
}
|
|
this.insertToGallery(a);
|
|
return a;
|
|
};
|
|
|
|
/**
|
|
* Sort the array using settings.comparator as comparator
|
|
*
|
|
* @param a the array to sort (it is sorted)
|
|
* @return the sorted array
|
|
*/
|
|
JustifiedGallery.prototype.sortArray = function (a) {
|
|
a.sort(this.settings.sort);
|
|
this.insertToGallery(a);
|
|
return a;
|
|
};
|
|
|
|
/**
|
|
* Reset the filters removing the 'jg-filtered' class from all the entries
|
|
*
|
|
* @param a the array to reset
|
|
*/
|
|
JustifiedGallery.prototype.resetFilters = function (a) {
|
|
for (var i = 0; i < a.length; i++) $(a[i]).removeClass('jg-filtered');
|
|
};
|
|
|
|
/**
|
|
* Filter the entries considering theirs classes (if a string has been passed) or using a function for filtering.
|
|
*
|
|
* @param a the array to filter
|
|
* @return the filtered array
|
|
*/
|
|
JustifiedGallery.prototype.filterArray = function (a) {
|
|
var settings = this.settings;
|
|
if ($.type(settings.filter) === 'string') {
|
|
// Filter only keeping the entries passed in the string
|
|
return a.filter(function (el) {
|
|
var $el = $(el);
|
|
if ($el.is(settings.filter)) {
|
|
$el.removeClass('jg-filtered');
|
|
return true;
|
|
} else {
|
|
$el.addClass('jg-filtered').removeClass('jg-visible');
|
|
return false;
|
|
}
|
|
});
|
|
} else if ($.isFunction(settings.filter)) {
|
|
// Filter using the passed function
|
|
var filteredArr = a.filter(settings.filter);
|
|
for (var i = 0; i < a.length; i++) {
|
|
if (filteredArr.indexOf(a[i]) === -1) {
|
|
$(a[i]).addClass('jg-filtered').removeClass('jg-visible');
|
|
} else {
|
|
$(a[i]).removeClass('jg-filtered');
|
|
}
|
|
}
|
|
return filteredArr;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Revert the image src to the default value.
|
|
*/
|
|
JustifiedGallery.prototype.resetImgSrc = function ($img) {
|
|
if ($img.data('jg.originalSrcLoc') === 'src') {
|
|
$img.attr('src', $img.data('jg.originalSrc'));
|
|
} else {
|
|
$img.attr('src', '');
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Destroy the Justified Gallery instance.
|
|
*
|
|
* It clears all the css properties added in the style attributes. We doesn't backup the original
|
|
* values for those css attributes, because it costs (performance) and because in general one
|
|
* shouldn't use the style attribute for an uniform set of images (where we suppose the use of
|
|
* classes). Creating a backup is also difficult because JG could be called multiple times and
|
|
* with different style attributes.
|
|
*/
|
|
JustifiedGallery.prototype.destroy = function () {
|
|
clearInterval(this.checkWidthIntervalId);
|
|
this.stopImgAnalyzerStarter();
|
|
|
|
// Get fresh entries list since filtered entries are absent in `this.entries`
|
|
$.each(this.getAllEntries(), $.proxy(function (_, entry) {
|
|
var $entry = $(entry);
|
|
|
|
// Reset entry style
|
|
$entry.css('width', '');
|
|
$entry.css('height', '');
|
|
$entry.css('top', '');
|
|
$entry.css('left', '');
|
|
$entry.data('jg.loaded', undefined);
|
|
$entry.removeClass('jg-entry jg-filtered jg-entry-visible');
|
|
|
|
// Reset image style
|
|
var $img = this.imgFromEntry($entry);
|
|
if ($img) {
|
|
$img.css('width', '');
|
|
$img.css('height', '');
|
|
$img.css('margin-left', '');
|
|
$img.css('margin-top', '');
|
|
this.resetImgSrc($img);
|
|
$img.data('jg.originalSrc', undefined);
|
|
$img.data('jg.originalSrcLoc', undefined);
|
|
$img.data('jg.src', undefined);
|
|
}
|
|
|
|
// Remove caption
|
|
this.removeCaptionEventsHandlers($entry);
|
|
var $caption = this.captionFromEntry($entry);
|
|
if ($entry.data('jg.createdCaption')) {
|
|
// remove also the caption element (if created by jg)
|
|
$entry.data('jg.createdCaption', undefined);
|
|
if ($caption !== null) $caption.remove();
|
|
} else {
|
|
if ($caption !== null) $caption.fadeTo(0, 1);
|
|
}
|
|
|
|
}, this));
|
|
|
|
this.$gallery.css('height', '');
|
|
this.$gallery.removeClass('justified-gallery');
|
|
this.$gallery.data('jg.controller', undefined);
|
|
this.settings.triggerEvent.call(this, 'jg.destroy');
|
|
};
|
|
|
|
/**
|
|
* Analyze the images and builds the rows. It returns if it found an image that is not loaded.
|
|
*
|
|
* @param isForResize if the image analyzer is called for resizing or not, to call a different callback at the end
|
|
*/
|
|
JustifiedGallery.prototype.analyzeImages = function (isForResize) {
|
|
for (var i = this.lastAnalyzedIndex + 1; i < this.entries.length; i++) {
|
|
var $entry = $(this.entries[i]);
|
|
if ($entry.data('jg.loaded') === true || $entry.data('jg.loaded') === 'skipped') {
|
|
var availableWidth = this.galleryWidth - 2 * this.border - (
|
|
(this.buildingRow.entriesBuff.length - 1) * this.settings.margins);
|
|
var imgAspectRatio = $entry.data('jg.width') / $entry.data('jg.height');
|
|
|
|
this.buildingRow.entriesBuff.push($entry);
|
|
this.buildingRow.aspectRatio += imgAspectRatio;
|
|
this.buildingRow.width += imgAspectRatio * this.settings.rowHeight;
|
|
this.lastAnalyzedIndex = i;
|
|
|
|
if (availableWidth / (this.buildingRow.aspectRatio + imgAspectRatio) < this.settings.rowHeight) {
|
|
this.flushRow(false, this.settings.maxRowsCount > 0 && this.rows === this.settings.maxRowsCount);
|
|
|
|
if (++this.yield.flushed >= this.yield.every) {
|
|
this.startImgAnalyzer(isForResize);
|
|
return;
|
|
}
|
|
}
|
|
} else if ($entry.data('jg.loaded') !== 'error') {
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Last row flush (the row is not full)
|
|
if (this.buildingRow.entriesBuff.length > 0) {
|
|
this.flushRow(true, this.settings.maxRowsCount > 0 && this.rows === this.settings.maxRowsCount);
|
|
}
|
|
|
|
if (this.isSpinnerActive()) {
|
|
this.stopLoadingSpinnerAnimation();
|
|
}
|
|
|
|
/* 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.
|
|
*/
|
|
this.stopImgAnalyzerStarter();
|
|
|
|
this.setGalleryFinalHeight(this.galleryHeightToSet);
|
|
|
|
//On complete callback
|
|
this.settings.triggerEvent.call(this, isForResize ? 'jg.resize' : 'jg.complete');
|
|
};
|
|
|
|
/**
|
|
* Stops any ImgAnalyzer starter (that has an assigned timeout)
|
|
*/
|
|
JustifiedGallery.prototype.stopImgAnalyzerStarter = function () {
|
|
this.yield.flushed = 0;
|
|
if (this.imgAnalyzerTimeout !== null) {
|
|
clearTimeout(this.imgAnalyzerTimeout);
|
|
this.imgAnalyzerTimeout = null;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Starts the image analyzer. It is not immediately called to let the browser to update the view
|
|
*
|
|
* @param isForResize specifies if the image analyzer must be called for resizing or not
|
|
*/
|
|
JustifiedGallery.prototype.startImgAnalyzer = function (isForResize) {
|
|
var that = this;
|
|
this.stopImgAnalyzerStarter();
|
|
this.imgAnalyzerTimeout = setTimeout(function () {
|
|
that.analyzeImages(isForResize);
|
|
}, 0.001); // we can't start it immediately due to a IE different behaviour
|
|
};
|
|
|
|
/**
|
|
* Checks 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.
|
|
*
|
|
* @param imageSrc the image src to load
|
|
* @param onLoad callback that is called when the image has been loaded
|
|
* @param onError callback that is called in case of an error
|
|
*/
|
|
JustifiedGallery.prototype.onImageEvent = function (imageSrc, onLoad, onError) {
|
|
if (!onLoad && !onError) return;
|
|
|
|
var memImage = new Image();
|
|
var $memImage = $(memImage);
|
|
if (onLoad) {
|
|
$memImage.one('load', function () {
|
|
$memImage.off('load error');
|
|
onLoad(memImage);
|
|
});
|
|
}
|
|
if (onError) {
|
|
$memImage.one('error', function () {
|
|
$memImage.off('load error');
|
|
onError(memImage);
|
|
});
|
|
}
|
|
memImage.src = imageSrc;
|
|
};
|
|
|
|
/**
|
|
* Init of Justified Gallery controlled
|
|
* It analyzes all the entries starting theirs loading and calling the image analyzer (that works with loaded images)
|
|
*/
|
|
JustifiedGallery.prototype.init = function () {
|
|
var imagesToLoad = false, skippedImages = false, that = this;
|
|
$.each(this.entries, function (index, entry) {
|
|
var $entry = $(entry);
|
|
var $image = that.imgFromEntry($entry);
|
|
|
|
$entry.addClass('jg-entry');
|
|
|
|
if ($entry.data('jg.loaded') !== true && $entry.data('jg.loaded') !== 'skipped') {
|
|
|
|
// Link Rel global overwrite
|
|
if (that.settings.rel !== null) $entry.attr('rel', that.settings.rel);
|
|
|
|
// Link Target global overwrite
|
|
if (that.settings.target !== null) $entry.attr('target', that.settings.target);
|
|
|
|
if ($image !== null) {
|
|
|
|
// Image src
|
|
var imageSrc = that.extractImgSrcFromImage($image);
|
|
|
|
/* If we have the height and the width, we don't wait that the image is loaded,
|
|
but we start directly with the justification */
|
|
if (that.settings.waitThumbnailsLoad === false || !imageSrc) {
|
|
var width = parseFloat($image.attr('width'));
|
|
var height = parseFloat($image.attr('height'));
|
|
if ($image.prop('tagName') === 'svg') {
|
|
width = parseFloat($image[0].getBBox().width);
|
|
height = parseFloat($image[0].getBBox().height);
|
|
}
|
|
if (!isNaN(width) && !isNaN(height)) {
|
|
$entry.data('jg.width', width);
|
|
$entry.data('jg.height', height);
|
|
$entry.data('jg.loaded', 'skipped');
|
|
skippedImages = true;
|
|
that.startImgAnalyzer(false);
|
|
return true; // continue
|
|
}
|
|
}
|
|
|
|
$entry.data('jg.loaded', false);
|
|
imagesToLoad = true;
|
|
|
|
// Spinner start
|
|
if (!that.isSpinnerActive()) that.startLoadingSpinnerAnimation();
|
|
|
|
that.onImageEvent(imageSrc, function (loadImg) { // image loaded
|
|
$entry.data('jg.width', loadImg.width);
|
|
$entry.data('jg.height', loadImg.height);
|
|
$entry.data('jg.loaded', true);
|
|
that.startImgAnalyzer(false);
|
|
}, function () { // image load error
|
|
$entry.data('jg.loaded', 'error');
|
|
that.startImgAnalyzer(false);
|
|
});
|
|
|
|
} else {
|
|
$entry.data('jg.loaded', true);
|
|
$entry.data('jg.width', $entry.width() | parseFloat($entry.css('width')) | 1);
|
|
$entry.data('jg.height', $entry.height() | parseFloat($entry.css('height')) | 1);
|
|
}
|
|
|
|
}
|
|
|
|
});
|
|
|
|
if (!imagesToLoad && !skippedImages) this.startImgAnalyzer(false);
|
|
this.checkWidth();
|
|
};
|
|
|
|
/**
|
|
* Checks that it is a valid number. If a string is passed it is converted to a number
|
|
*
|
|
* @param settingContainer the object that contains the setting (to allow the conversion)
|
|
* @param settingName the setting name
|
|
*/
|
|
JustifiedGallery.prototype.checkOrConvertNumber = function (settingContainer, settingName) {
|
|
if ($.type(settingContainer[settingName]) === 'string') {
|
|
settingContainer[settingName] = parseFloat(settingContainer[settingName]);
|
|
}
|
|
|
|
if ($.type(settingContainer[settingName]) === 'number') {
|
|
if (isNaN(settingContainer[settingName])) throw 'invalid number for ' + settingName;
|
|
} else {
|
|
throw settingName + ' must be a number';
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Checks the sizeRangeSuffixes and, if necessary, converts
|
|
* its keys from string (e.g. old settings with 'lt100') to int.
|
|
*/
|
|
JustifiedGallery.prototype.checkSizeRangesSuffixes = function () {
|
|
if ($.type(this.settings.sizeRangeSuffixes) !== 'object') {
|
|
throw 'sizeRangeSuffixes must be defined and must be an object';
|
|
}
|
|
|
|
var suffixRanges = [];
|
|
for (var rangeIdx in this.settings.sizeRangeSuffixes) {
|
|
if (this.settings.sizeRangeSuffixes.hasOwnProperty(rangeIdx)) suffixRanges.push(rangeIdx);
|
|
}
|
|
|
|
var newSizeRngSuffixes = { 0: '' };
|
|
for (var i = 0; i < suffixRanges.length; i++) {
|
|
if ($.type(suffixRanges[i]) === 'string') {
|
|
try {
|
|
var numIdx = parseInt(suffixRanges[i].replace(/^[a-z]+/, ''), 10);
|
|
newSizeRngSuffixes[numIdx] = this.settings.sizeRangeSuffixes[suffixRanges[i]];
|
|
} catch (e) {
|
|
throw 'sizeRangeSuffixes keys must contains correct numbers (' + e + ')';
|
|
}
|
|
} else {
|
|
newSizeRngSuffixes[suffixRanges[i]] = this.settings.sizeRangeSuffixes[suffixRanges[i]];
|
|
}
|
|
}
|
|
|
|
this.settings.sizeRangeSuffixes = newSizeRngSuffixes;
|
|
};
|
|
|
|
/**
|
|
* check and convert the maxRowHeight setting
|
|
* requires rowHeight to be already set
|
|
* TODO: should be always called when only rowHeight is changed
|
|
* @return number or null
|
|
*/
|
|
JustifiedGallery.prototype.retrieveMaxRowHeight = function () {
|
|
var newMaxRowHeight = null;
|
|
var rowHeight = this.settings.rowHeight;
|
|
|
|
if ($.type(this.settings.maxRowHeight) === 'string') {
|
|
if (this.settings.maxRowHeight.match(/^[0-9]+%$/)) {
|
|
newMaxRowHeight = rowHeight * parseFloat(this.settings.maxRowHeight.match(/^([0-9]+)%$/)[1]) / 100;
|
|
} else {
|
|
newMaxRowHeight = parseFloat(this.settings.maxRowHeight);
|
|
}
|
|
} else if ($.type(this.settings.maxRowHeight) === 'number') {
|
|
newMaxRowHeight = this.settings.maxRowHeight;
|
|
} else if (this.settings.maxRowHeight === false || this.settings.maxRowHeight == null) {
|
|
return null;
|
|
} else {
|
|
throw 'maxRowHeight must be a number or a percentage';
|
|
}
|
|
|
|
// check if the converted value is not a number
|
|
if (isNaN(newMaxRowHeight)) throw 'invalid number for maxRowHeight';
|
|
|
|
// check values, maxRowHeight must be >= rowHeight
|
|
if (newMaxRowHeight < rowHeight) newMaxRowHeight = rowHeight;
|
|
|
|
return newMaxRowHeight;
|
|
};
|
|
|
|
/**
|
|
* Checks the settings
|
|
*/
|
|
JustifiedGallery.prototype.checkSettings = function () {
|
|
this.checkSizeRangesSuffixes();
|
|
|
|
this.checkOrConvertNumber(this.settings, 'rowHeight');
|
|
this.checkOrConvertNumber(this.settings, 'margins');
|
|
this.checkOrConvertNumber(this.settings, 'border');
|
|
this.checkOrConvertNumber(this.settings, 'maxRowsCount');
|
|
|
|
var lastRowModes = [
|
|
'justify',
|
|
'nojustify',
|
|
'left',
|
|
'center',
|
|
'right',
|
|
'hide'
|
|
];
|
|
if (lastRowModes.indexOf(this.settings.lastRow) === -1) {
|
|
throw 'lastRow must be one of: ' + lastRowModes.join(', ');
|
|
}
|
|
|
|
this.checkOrConvertNumber(this.settings, 'justifyThreshold');
|
|
if (this.settings.justifyThreshold < 0 || this.settings.justifyThreshold > 1) {
|
|
throw 'justifyThreshold must be in the interval [0,1]';
|
|
}
|
|
if ($.type(this.settings.cssAnimation) !== 'boolean') {
|
|
throw 'cssAnimation must be a boolean';
|
|
}
|
|
|
|
if ($.type(this.settings.captions) !== 'boolean') throw 'captions must be a boolean';
|
|
this.checkOrConvertNumber(this.settings.captionSettings, 'animationDuration');
|
|
|
|
this.checkOrConvertNumber(this.settings.captionSettings, 'visibleOpacity');
|
|
if (this.settings.captionSettings.visibleOpacity < 0 ||
|
|
this.settings.captionSettings.visibleOpacity > 1) {
|
|
throw 'captionSettings.visibleOpacity must be in the interval [0, 1]';
|
|
}
|
|
|
|
this.checkOrConvertNumber(this.settings.captionSettings, 'nonVisibleOpacity');
|
|
if (this.settings.captionSettings.nonVisibleOpacity < 0 ||
|
|
this.settings.captionSettings.nonVisibleOpacity > 1) {
|
|
throw 'captionSettings.nonVisibleOpacity must be in the interval [0, 1]';
|
|
}
|
|
|
|
this.checkOrConvertNumber(this.settings, 'imagesAnimationDuration');
|
|
this.checkOrConvertNumber(this.settings, 'refreshTime');
|
|
this.checkOrConvertNumber(this.settings, 'refreshSensitivity');
|
|
if ($.type(this.settings.randomize) !== 'boolean') throw 'randomize must be a boolean';
|
|
if ($.type(this.settings.selector) !== 'string') throw 'selector must be a string';
|
|
|
|
if (this.settings.sort !== false && !$.isFunction(this.settings.sort)) {
|
|
throw 'sort must be false or a comparison function';
|
|
}
|
|
|
|
if (this.settings.filter !== false && !$.isFunction(this.settings.filter) &&
|
|
$.type(this.settings.filter) !== 'string') {
|
|
throw 'filter must be false, a string or a filter function';
|
|
}
|
|
};
|
|
|
|
/**
|
|
* It brings all the indexes from the sizeRangeSuffixes and it orders them. They are then sorted and returned.
|
|
* @returns {Array} sorted suffix ranges
|
|
*/
|
|
JustifiedGallery.prototype.retrieveSuffixRanges = function () {
|
|
var suffixRanges = [];
|
|
for (var rangeIdx in this.settings.sizeRangeSuffixes) {
|
|
if (this.settings.sizeRangeSuffixes.hasOwnProperty(rangeIdx)) suffixRanges.push(parseInt(rangeIdx, 10));
|
|
}
|
|
suffixRanges.sort(function (a, b) { return a > b ? 1 : a < b ? -1 : 0; });
|
|
return suffixRanges;
|
|
};
|
|
|
|
/**
|
|
* Update the existing settings only changing some of them
|
|
*
|
|
* @param newSettings the new settings (or a subgroup of them)
|
|
*/
|
|
JustifiedGallery.prototype.updateSettings = function (newSettings) {
|
|
// In this case Justified Gallery has been called again changing only some options
|
|
this.settings = $.extend({}, this.settings, newSettings);
|
|
this.checkSettings();
|
|
|
|
// As reported in the settings: negative value = same as margins, 0 = disabled
|
|
this.border = this.settings.border >= 0 ? this.settings.border : this.settings.margins;
|
|
|
|
this.maxRowHeight = this.retrieveMaxRowHeight();
|
|
this.suffixRanges = this.retrieveSuffixRanges();
|
|
};
|
|
|
|
JustifiedGallery.prototype.defaults = {
|
|
sizeRangeSuffixes: {}, /* e.g. Flickr configuration
|
|
{
|
|
100: '_t', // used when longest is less than 100px
|
|
240: '_m', // used when longest is between 101px and 240px
|
|
320: '_n', // ...
|
|
500: '',
|
|
640: '_z',
|
|
1024: '_b' // used as else case because it is the last
|
|
}
|
|
*/
|
|
thumbnailPath: undefined, /* If defined, sizeRangeSuffixes is not used, and this function is used to determine the
|
|
path relative to a specific thumbnail size. The function should accept respectively three arguments:
|
|
current path, width and height */
|
|
rowHeight: 120, // required? required to be > 0?
|
|
maxRowHeight: false, // false or negative value to deactivate. Positive number to express the value in pixels,
|
|
// A string '[0-9]+%' to express in percentage (e.g. 300% means that the row height
|
|
// can't exceed 3 * rowHeight)
|
|
maxRowsCount: 0, // maximum number of rows to be displayed (0 = disabled)
|
|
margins: 1,
|
|
border: -1, // negative value = same as margins, 0 = disabled, any other value to set the border
|
|
|
|
lastRow: 'nojustify', // … which is the same as 'left', or can be 'justify', 'center', 'right' or 'hide'
|
|
|
|
justifyThreshold: 0.90, /* if row width / available space > 0.90 it will be always justified
|
|
* (i.e. lastRow setting is not considered) */
|
|
waitThumbnailsLoad: true,
|
|
captions: true,
|
|
cssAnimation: true,
|
|
imagesAnimationDuration: 500, // 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: /\.[^.\\/]+$/, // regexp to capture the extension of an image
|
|
refreshTime: 200, // time interval (in ms) to check if the page changes its width
|
|
refreshSensitivity: 0, // change in width allowed (in px) without re-building the gallery
|
|
randomize: false,
|
|
rtl: false, // right-to-left mode
|
|
sort: false, /*
|
|
- false: to do not sort
|
|
- function: to sort them using the function as comparator (see Array.prototype.sort())
|
|
*/
|
|
filter: false, /*
|
|
- false, null or undefined: for a disabled filter
|
|
- a string: an entry is kept if entry.is(filter string) returns true
|
|
see jQuery's .is() function for further information
|
|
- a function: invoked with arguments (entry, index, array). Return true to keep the entry, false otherwise.
|
|
It follows the specifications of the Array.prototype.filter() function of JavaScript.
|
|
*/
|
|
selector: 'a', // The selector that is used to know what are the entries of the gallery
|
|
imgSelector: '> img, > a > img, > svg, > a > svg', // The selector that is used to know what are the images of each entry
|
|
triggerEvent: function (event) { // This is called to trigger events, the default behavior is to call $.trigger
|
|
this.$gallery.trigger(event); // Consider that 'this' is this set to the JustifiedGallery object, so it can
|
|
} // access to fields such as $gallery, useful to trigger events with jQuery.
|
|
};
|
|
|
|
|
|
/**
|
|
* Justified Gallery plugin for jQuery
|
|
*
|
|
* Events
|
|
* - jg.complete : called when all the gallery has been created
|
|
* - jg.resize : called when the gallery has been resized
|
|
* - jg.rowflush : when a new row appears
|
|
*
|
|
* @param arg the action (or the settings) passed when the plugin is called
|
|
* @returns {*} the object itself
|
|
*/
|
|
$.fn.justifiedGallery = function (arg) {
|
|
return this.each(function (index, gallery) {
|
|
|
|
var $gallery = $(gallery);
|
|
$gallery.addClass('justified-gallery');
|
|
|
|
var controller = $gallery.data('jg.controller');
|
|
if (typeof controller === 'undefined') {
|
|
// Create controller and assign it to the object data
|
|
if (typeof arg !== 'undefined' && arg !== null && $.type(arg) !== 'object') {
|
|
if (arg === 'destroy') return; // Just a call to an unexisting object
|
|
throw 'The argument must be an object';
|
|
}
|
|
controller = new JustifiedGallery($gallery, $.extend({}, JustifiedGallery.prototype.defaults, arg));
|
|
$gallery.data('jg.controller', controller);
|
|
} else if (arg === 'norewind') {
|
|
// In this case we don't rewind: we analyze only the latest images (e.g. to complete the last unfinished row
|
|
// ... left to be more readable
|
|
} else if (arg === 'destroy') {
|
|
controller.destroy();
|
|
return;
|
|
} else {
|
|
// In this case Justified Gallery has been called again changing only some options
|
|
controller.updateSettings(arg);
|
|
controller.rewind();
|
|
}
|
|
|
|
// Update the entries list
|
|
if (!controller.updateEntries(arg === 'norewind')) return;
|
|
|
|
// Init justified gallery
|
|
controller.init();
|
|
|
|
});
|
|
};
|
|
|
|
}));
|