Merge pull request #132 from ArthurHoaro/picwall
Lazy load images with the light lib bLazy.js instead of jQuery
This commit is contained in:
nodiscc
commit
0e5400e617
9 changed files with 250 additions and 278 deletions
4
COPYING
4
COPYING
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@ -50,9 +50,9 @@ Files: Files: inc/jquery*.js, inc/jquery-ui*.js
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License: MIT License (http://opensource.org/licenses/MIT)
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Copyright: (C) jQuery Foundation and other contributors,https://jquery.com/download/
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Files: inc/jquery-lazyload*.js
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Files: inc/blazy*.js
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License: MIT License (http://opensource.org/licenses/MIT)
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Copyright: (C) Mika Tuupola, https://github.com/tuupola
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Copyright: (C) Bjoern Klinggaard - @bklinggaard - http://dinbror.dk/blazy
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Files: inc/qr.js
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License: GPLv3 License (http://opensource.org/licenses/gpl-3.0)
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232
inc/blazy-1.3.1.js
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232
inc/blazy-1.3.1.js
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@ -0,0 +1,232 @@
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/*!
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hey, [be]Lazy.js - v1.3.1 - 2015.02.01
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A lazy loading and multi-serving image script
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(c) Bjoern Klinggaard - @bklinggaard - http://dinbror.dk/blazy
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*/
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;(function(root, blazy) {
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if (typeof define === 'function' && define.amd) {
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// AMD. Register bLazy as an anonymous module
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define(blazy);
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} else if (typeof exports === 'object') {
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// Node. Does not work with strict CommonJS, but
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// only CommonJS-like environments that support module.exports,
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// like Node.
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module.exports = blazy();
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} else {
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// Browser globals. Register bLazy on window
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root.Blazy = blazy();
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}
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})(this, function () {
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'use strict';
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//vars
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var source, options, viewport, images, count, isRetina, destroyed;
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//throttle vars
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var validateT, saveViewportOffsetT;
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// constructor
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function Blazy(settings) {
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//IE7- fallback for missing querySelectorAll support
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if (!document.querySelectorAll) {
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var s=document.createStyleSheet();
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document.querySelectorAll = function(r, c, i, j, a) {
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a=document.all, c=[], r = r.replace(/\[for\b/gi, '[htmlFor').split(',');
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for (i=r.length; i--;) {
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s.addRule(r[i], 'k:v');
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for (j=a.length; j--;) a[j].currentStyle.k && c.push(a[j]);
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s.removeRule(0);
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}
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return c;
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};
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}
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//init vars
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destroyed = true;
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images = [];
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viewport = {};
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//options
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options = settings || {};
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options.error = options.error || false;
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options.offset = options.offset || 100;
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options.success = options.success || false;
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options.selector = options.selector || '.b-lazy';
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options.separator = options.separator || '|';
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options.container = options.container ? document.querySelectorAll(options.container) : false;
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options.errorClass = options.errorClass || 'b-error';
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options.breakpoints = options.breakpoints || false;
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options.successClass = options.successClass || 'b-loaded';
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options.src = source = options.src || 'data-src';
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isRetina = window.devicePixelRatio > 1;
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viewport.top = 0 - options.offset;
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viewport.left = 0 - options.offset;
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//throttle, ensures that we don't call the functions too often
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validateT = throttle(validate, 25);
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saveViewportOffsetT = throttle(saveViewportOffset, 50);
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saveViewportOffset();
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//handle multi-served image src
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each(options.breakpoints, function(object){
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if(object.width >= window.screen.width) {
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source = object.src;
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return false;
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}
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});
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// start lazy load
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initialize();
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}
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/* public functions
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************************************/
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Blazy.prototype.revalidate = function() {
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initialize();
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};
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Blazy.prototype.load = function(element, force){
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if(!isElementLoaded(element)) loadImage(element, force);
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};
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Blazy.prototype.destroy = function(){
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if(options.container){
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each(options.container, function(object){
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unbindEvent(object, 'scroll', validateT);
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});
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}
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unbindEvent(window, 'scroll', validateT);
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unbindEvent(window, 'resize', validateT);
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unbindEvent(window, 'resize', saveViewportOffsetT);
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count = 0;
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images.length = 0;
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destroyed = true;
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};
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/* private helper functions
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************************************/
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function initialize(){
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// First we create an array of images to lazy load
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createImageArray(options.selector);
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// Then we bind resize and scroll events if not already binded
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if(destroyed) {
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destroyed = false;
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if(options.container) {
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each(options.container, function(object){
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bindEvent(object, 'scroll', validateT);
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});
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}
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bindEvent(window, 'resize', saveViewportOffsetT);
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bindEvent(window, 'resize', validateT);
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bindEvent(window, 'scroll', validateT);
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}
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// And finally, we start to lazy load. Should bLazy ensure domready?
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validate();
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}
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function validate() {
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for(var i = 0; i<count; i++){
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var image = images[i];
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if(elementInView(image) || isElementLoaded(image)) {
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Blazy.prototype.load(image);
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images.splice(i, 1);
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count--;
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i--;
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}
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}
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if(count === 0) {
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Blazy.prototype.destroy();
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}
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}
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function loadImage(ele, force){
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// if element is visible
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if(force || (ele.offsetWidth > 0 && ele.offsetHeight > 0)) {
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var dataSrc = ele.getAttribute(source) || ele.getAttribute(options.src); // fallback to default data-src
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if(dataSrc) {
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var dataSrcSplitted = dataSrc.split(options.separator);
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var src = dataSrcSplitted[isRetina && dataSrcSplitted.length > 1 ? 1 : 0];
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var img = new Image();
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// cleanup markup, remove data source attributes
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each(options.breakpoints, function(object){
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ele.removeAttribute(object.src);
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});
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ele.removeAttribute(options.src);
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img.onerror = function() {
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if(options.error) options.error(ele, "invalid");
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ele.className = ele.className + ' ' + options.errorClass;
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};
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img.onload = function() {
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// Is element an image or should we add the src as a background image?
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ele.nodeName.toLowerCase() === 'img' ? ele.src = src : ele.style.backgroundImage = 'url("' + src + '")';
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ele.className = ele.className + ' ' + options.successClass;
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if(options.success) options.success(ele);
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};
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img.src = src; //preload image
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} else {
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if(options.error) options.error(ele, "missing");
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ele.className = ele.className + ' ' + options.errorClass;
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}
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}
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}
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function elementInView(ele) {
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var rect = ele.getBoundingClientRect();
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return (
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// Intersection
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rect.right >= viewport.left
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&& rect.bottom >= viewport.top
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&& rect.left <= viewport.right
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&& rect.top <= viewport.bottom
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);
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}
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function isElementLoaded(ele) {
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return (' ' + ele.className + ' ').indexOf(' ' + options.successClass + ' ') !== -1;
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}
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function createImageArray(selector) {
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var nodelist = document.querySelectorAll(selector);
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count = nodelist.length;
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//converting nodelist to array
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for(var i = count; i--; images.unshift(nodelist[i])){}
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}
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function saveViewportOffset(){
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viewport.bottom = (window.innerHeight || document.documentElement.clientHeight) + options.offset;
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viewport.right = (window.innerWidth || document.documentElement.clientWidth) + options.offset;
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}
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function bindEvent(ele, type, fn) {
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if (ele.attachEvent) {
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ele.attachEvent && ele.attachEvent('on' + type, fn);
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} else {
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ele.addEventListener(type, fn, false);
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}
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}
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function unbindEvent(ele, type, fn) {
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if (ele.detachEvent) {
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ele.detachEvent && ele.detachEvent('on' + type, fn);
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} else {
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ele.removeEventListener(type, fn, false);
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}
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}
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function each(object, fn){
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if(object && fn) {
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var l = object.length;
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for(var i = 0; i<l && fn(object[i], i) !== false; i++){}
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}
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}
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function throttle(fn, minDelay) {
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var lastCall = 0;
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return function() {
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var now = +new Date();
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if (now - lastCall < minDelay) {
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return;
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}
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lastCall = now;
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fn.apply(images, arguments);
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};
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}
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return Blazy;
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});
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BIN
inc/blazy-1.3.1.min.js
vendored
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BIN
inc/blazy-1.3.1.min.js
vendored
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Binary file not shown.
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@ -1,242 +0,0 @@
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/*
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* Lazy Load - jQuery plugin for lazy loading images
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*
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* Copyright (c) 2007-2013 Mika Tuupola
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/mit-license.php
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*
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* Project home:
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* http://www.appelsiini.net/projects/lazyload
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*
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* Version: 1.9.3
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*
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*/
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(function($, window, document, undefined) {
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var $window = $(window);
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$.fn.lazyload = function(options) {
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var elements = this;
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var $container;
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var settings = {
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threshold : 0,
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failure_limit : 0,
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event : "scroll",
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effect : "show",
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container : window,
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data_attribute : "original",
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skip_invisible : true,
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appear : null,
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load : null,
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placeholder : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC"
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};
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function update() {
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var counter = 0;
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elements.each(function() {
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var $this = $(this);
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if (settings.skip_invisible && !$this.is(":visible")) {
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return;
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}
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if ($.abovethetop(this, settings) ||
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$.leftofbegin(this, settings)) {
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/* Nothing. */
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} else if (!$.belowthefold(this, settings) &&
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!$.rightoffold(this, settings)) {
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$this.trigger("appear");
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/* if we found an image we'll load, reset the counter */
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counter = 0;
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} else {
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if (++counter > settings.failure_limit) {
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return false;
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}
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}
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});
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}
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if(options) {
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/* Maintain BC for a couple of versions. */
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if (undefined !== options.failurelimit) {
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options.failure_limit = options.failurelimit;
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delete options.failurelimit;
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}
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if (undefined !== options.effectspeed) {
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options.effect_speed = options.effectspeed;
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delete options.effectspeed;
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}
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$.extend(settings, options);
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}
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/* Cache container as jQuery as object. */
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$container = (settings.container === undefined ||
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settings.container === window) ? $window : $(settings.container);
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/* Fire one scroll event per scroll. Not one scroll event per image. */
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if (0 === settings.event.indexOf("scroll")) {
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$container.bind(settings.event, function() {
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return update();
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});
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}
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this.each(function() {
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var self = this;
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var $self = $(self);
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self.loaded = false;
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/* If no src attribute given use data:uri. */
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if ($self.attr("src") === undefined || $self.attr("src") === false) {
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if ($self.is("img")) {
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$self.attr("src", settings.placeholder);
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}
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}
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/* When appear is triggered load original image. */
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$self.one("appear", function() {
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if (!this.loaded) {
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if (settings.appear) {
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var elements_left = elements.length;
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settings.appear.call(self, elements_left, settings);
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}
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$("<img />")
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.bind("load", function() {
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var original = $self.attr("data-" + settings.data_attribute);
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$self.hide();
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if ($self.is("img")) {
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$self.attr("src", original);
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} else {
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$self.css("background-image", "url('" + original + "')");
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}
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$self[settings.effect](settings.effect_speed);
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self.loaded = true;
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/* Remove image from array so it is not looped next time. */
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var temp = $.grep(elements, function(element) {
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return !element.loaded;
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});
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elements = $(temp);
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if (settings.load) {
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var elements_left = elements.length;
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settings.load.call(self, elements_left, settings);
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}
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})
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.attr("src", $self.attr("data-" + settings.data_attribute));
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}
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});
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/* When wanted event is triggered load original image */
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/* by triggering appear. */
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if (0 !== settings.event.indexOf("scroll")) {
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$self.bind(settings.event, function() {
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if (!self.loaded) {
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$self.trigger("appear");
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}
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});
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}
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});
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/* Check if something appears when window is resized. */
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$window.bind("resize", function() {
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update();
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});
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/* With IOS5 force loading images when navigating with back button. */
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/* Non optimal workaround. */
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if ((/(?:iphone|ipod|ipad).*os 5/gi).test(navigator.appVersion)) {
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$window.bind("pageshow", function(event) {
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if (event.originalEvent && event.originalEvent.persisted) {
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elements.each(function() {
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$(this).trigger("appear");
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});
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}
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});
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}
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/* Force initial check if images should appear. */
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$(document).ready(function() {
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update();
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});
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return this;
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};
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/* Convenience methods in jQuery namespace. */
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/* Use as $.belowthefold(element, {threshold : 100, container : window}) */
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$.belowthefold = function(element, settings) {
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var fold;
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if (settings.container === undefined || settings.container === window) {
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fold = (window.innerHeight ? window.innerHeight : $window.height()) + $window.scrollTop();
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} else {
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fold = $(settings.container).offset().top + $(settings.container).height();
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}
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return fold <= $(element).offset().top - settings.threshold;
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};
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$.rightoffold = function(element, settings) {
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var fold;
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if (settings.container === undefined || settings.container === window) {
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fold = $window.width() + $window.scrollLeft();
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} else {
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fold = $(settings.container).offset().left + $(settings.container).width();
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}
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return fold <= $(element).offset().left - settings.threshold;
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};
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$.abovethetop = function(element, settings) {
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var fold;
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if (settings.container === undefined || settings.container === window) {
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fold = $window.scrollTop();
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} else {
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fold = $(settings.container).offset().top;
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}
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return fold >= $(element).offset().top + settings.threshold + $(element).height();
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};
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$.leftofbegin = function(element, settings) {
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var fold;
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if (settings.container === undefined || settings.container === window) {
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fold = $window.scrollLeft();
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} else {
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fold = $(settings.container).offset().left;
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}
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return fold >= $(element).offset().left + settings.threshold + $(element).width();
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};
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$.inviewport = function(element, settings) {
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return !$.rightoffold(element, settings) && !$.leftofbegin(element, settings) &&
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!$.belowthefold(element, settings) && !$.abovethetop(element, settings);
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};
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|
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/* Custom selectors for your convenience. */
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/* Use as $("img:below-the-fold").something() or */
|
||||
/* $("img").filter(":below-the-fold").something() which is faster */
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||||
|
||||
$.extend($.expr[":"], {
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"below-the-fold" : function(a) { return $.belowthefold(a, {threshold : 0}); },
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||||
"above-the-top" : function(a) { return !$.belowthefold(a, {threshold : 0}); },
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"right-of-screen": function(a) { return $.rightoffold(a, {threshold : 0}); },
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||||
"left-of-screen" : function(a) { return !$.rightoffold(a, {threshold : 0}); },
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||||
"in-viewport" : function(a) { return $.inviewport(a, {threshold : 0}); },
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||||
/* Maintain BC for couple of versions. */
|
||||
"above-the-fold" : function(a) { return !$.belowthefold(a, {threshold : 0}); },
|
||||
"right-of-fold" : function(a) { return $.rightoffold(a, {threshold : 0}); },
|
||||
"left-of-fold" : function(a) { return !$.rightoffold(a, {threshold : 0}); }
|
||||
});
|
||||
|
||||
})(jQuery, window, document);
|
||||
BIN
inc/jquery.lazyload-1.9.3.min.js
vendored
BIN
inc/jquery.lazyload-1.9.3.min.js
vendored
Binary file not shown.
|
|
@ -647,9 +647,21 @@ a.qrcode img {
|
|||
float: left;
|
||||
}
|
||||
|
||||
.b-lazy {
|
||||
-webkit-transition: opacity 500ms ease-in-out;
|
||||
-moz-transition: opacity 500ms ease-in-out;
|
||||
-o-transition: opacity 500ms ease-in-out;
|
||||
transition: opacity 500ms ease-in-out;
|
||||
opacity: 0;
|
||||
}
|
||||
.b-lazy.b-loaded {
|
||||
opacity: 1;
|
||||
}
|
||||
|
||||
.picwall_pictureframe img {
|
||||
max-width: 100%;
|
||||
height: auto;
|
||||
color: transparent;
|
||||
} /* Adapt the width of the image */
|
||||
|
||||
.picwall_pictureframe a {
|
||||
|
|
|
|||
|
|
@ -2125,11 +2125,8 @@ function lazyThumbnail($url,$href=false)
|
|||
|
||||
$html='<a href="'.htmlspecialchars($t['href']).'">';
|
||||
|
||||
// Lazy image (only loaded by JavaScript when in the viewport).
|
||||
if (!empty($GLOBALS['disablejquery'])) // (except if jQuery is disabled)
|
||||
$html.='<img class="lazyimage" src="'.htmlspecialchars($t['src']).'"';
|
||||
else
|
||||
$html.='<img class="lazyimage" src="#" data-original="'.htmlspecialchars($t['src']).'"';
|
||||
// Lazy image
|
||||
$html.='<img class="b-lazy" src="#" data-src="'.htmlspecialchars($t['src']).'"';
|
||||
|
||||
if (!empty($t['width'])) $html.=' width="'.htmlspecialchars($t['width']).'"';
|
||||
if (!empty($t['height'])) $html.=' height="'.htmlspecialchars($t['height']).'"';
|
||||
|
|
|
|||
|
|
@ -1,11 +1,7 @@
|
|||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>{include="includes"}
|
||||
{if="empty($GLOBALS['disablejquery'])"}
|
||||
<script src="inc/jquery-1.11.2.min.js#"></script>
|
||||
<script src="inc/jquery-ui-1.11.2.min.js#"></script>
|
||||
<script src="inc/jquery.lazyload-1.9.3.min.js#"></script>
|
||||
{/if}
|
||||
<script src="inc/blazy-1.3.1.min.js#"></script>
|
||||
</head>
|
||||
<body>
|
||||
<div id="pageheader">{include="page.header"}</div>
|
||||
|
|
@ -20,12 +16,8 @@
|
|||
</div>
|
||||
{include="page.footer"}
|
||||
|
||||
{if="empty($GLOBALS['disablejquery'])"}
|
||||
<script>
|
||||
$(document).ready(function() {
|
||||
$("img.lazyimage").show().lazyload();
|
||||
});
|
||||
var bLazy = new Blazy();
|
||||
</script>
|
||||
{/if}
|
||||
</body>
|
||||
</html>
|
||||
|
|
@ -1,19 +0,0 @@
|
|||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>{include="includes"}</head>
|
||||
<body>
|
||||
<div id="pageheader">{include="page.header"}</div>
|
||||
<div style="background-color:#003;">
|
||||
{loop="linksToDisplay"}
|
||||
<div style="float:left;width:48%;border-right:2px solid white;height:120px;overflow:hide;">
|
||||
<div style="float:left;width:120px;text-align:center">{$value.thumbnail}</div>
|
||||
<a href="{$value.permalink}" style="color:yellow;font-weight:bold;text-decoration:none;">{$value.title|htmlspecialchars}</a><br>
|
||||
<span style="font-size:8pt;color:#eee;">{$value.description|htmlspecialchars}</span>
|
||||
<div style="clear:both;"></div>
|
||||
</div><br>
|
||||
{/loop}
|
||||
</div>
|
||||
|
||||
{include="page.footer"}
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Reference in a new issue