1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/holder/holder.js Fri Jul 04 16:42:41 2014 +0400
1.3 @@ -0,0 +1,401 @@
1.4 +/*
1.5 +
1.6 +Holder - 1.9 - client side image placeholders
1.7 +(c) 2012-2013 Ivan Malopinsky / http://imsky.co
1.8 +
1.9 +Provided under the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
1.10 +Commercial use requires attribution.
1.11 +
1.12 +*/
1.13 +
1.14 +var Holder = Holder || {};
1.15 +(function (app, win) {
1.16 +
1.17 +var preempted = false,
1.18 +fallback = false,
1.19 +canvas = document.createElement('canvas');
1.20 +
1.21 +//getElementsByClassName polyfill
1.22 +document.getElementsByClassName||(document.getElementsByClassName=function(e){var t=document,n,r,i,s=[];if(t.querySelectorAll)return t.querySelectorAll("."+e);if(t.evaluate){r=".//*[contains(concat(' ', @class, ' '), ' "+e+" ')]",n=t.evaluate(r,t,null,0,null);while(i=n.iterateNext())s.push(i)}else{n=t.getElementsByTagName("*"),r=new RegExp("(^|\\s)"+e+"(\\s|$)");for(i=0;i<n.length;i++)r.test(n[i].className)&&s.push(n[i])}return s})
1.23 +
1.24 +//getComputedStyle polyfill
1.25 +window.getComputedStyle||(window.getComputedStyle=function(e,t){return this.el=e,this.getPropertyValue=function(t){var n=/(\-([a-z]){1})/g;return t=="float"&&(t="styleFloat"),n.test(t)&&(t=t.replace(n,function(){return arguments[2].toUpperCase()})),e.currentStyle[t]?e.currentStyle[t]:null},this})
1.26 +
1.27 +//http://javascript.nwbox.com/ContentLoaded by Diego Perini with modifications
1.28 +function contentLoaded(n,t){var l="complete",s="readystatechange",u=!1,h=u,c=!0,i=n.document,a=i.documentElement,e=i.addEventListener?"addEventListener":"attachEvent",v=i.addEventListener?"removeEventListener":"detachEvent",f=i.addEventListener?"":"on",r=function(e){(e.type!=s||i.readyState==l)&&((e.type=="load"?n:i)[v](f+e.type,r,u),!h&&(h=!0)&&t.call(n,null))},o=function(){try{a.doScroll("left")}catch(n){setTimeout(o,50);return}r("poll")};if(i.readyState==l)t.call(n,"lazy");else{if(i.createEventObject&&a.doScroll){try{c=!n.frameElement}catch(y){}c&&o()}i[e](f+"DOMContentLoaded",r,u),i[e](f+s,r,u),n[e](f+"load",r,u)}};
1.29 +
1.30 +//https://gist.github.com/991057 by Jed Schmidt with modifications
1.31 +function selector(a){
1.32 + a=a.match(/^(\W)?(.*)/);var b=document["getElement"+(a[1]?a[1]=="#"?"ById":"sByClassName":"sByTagName")](a[2]);
1.33 + var ret=[]; b!=null&&(b.length?ret=b:b.length==0?ret=b:ret=[b]); return ret;
1.34 +}
1.35 +
1.36 +//shallow object property extend
1.37 +function extend(a,b){var c={};for(var d in a)c[d]=a[d];for(var e in b)c[e]=b[e];return c}
1.38 +
1.39 +//hasOwnProperty polyfill
1.40 +if (!Object.prototype.hasOwnProperty)
1.41 + Object.prototype.hasOwnProperty = function(prop) {
1.42 + var proto = this.__proto__ || this.constructor.prototype;
1.43 + return (prop in this) && (!(prop in proto) || proto[prop] !== this[prop]);
1.44 + }
1.45 +
1.46 +function text_size(width, height, template) {
1.47 + var dimension_arr = [height, width].sort();
1.48 + var maxFactor = Math.round(dimension_arr[1] / 16),
1.49 + minFactor = Math.round(dimension_arr[0] / 16);
1.50 + var text_height = Math.max(template.size, maxFactor);
1.51 + return {
1.52 + height: text_height
1.53 + }
1.54 +}
1.55 +
1.56 +function draw(ctx, dimensions, template, ratio) {
1.57 + var ts = text_size(dimensions.width, dimensions.height, template);
1.58 + var text_height = ts.height;
1.59 + var width = dimensions.width * ratio, height = dimensions.height * ratio;
1.60 + var font = template.font ? template.font : "sans-serif";
1.61 + canvas.width = width;
1.62 + canvas.height = height;
1.63 + ctx.textAlign = "center";
1.64 + ctx.textBaseline = "middle";
1.65 + ctx.fillStyle = template.background;
1.66 + ctx.fillRect(0, 0, width, height);
1.67 + ctx.fillStyle = template.foreground;
1.68 + ctx.font = "bold " + text_height + "px "+font;
1.69 + var text = template.text ? template.text : (dimensions.width + "x" + dimensions.height);
1.70 + if (ctx.measureText(text).width / width > 1) {
1.71 + text_height = template.size / (ctx.measureText(text).width / width);
1.72 + }
1.73 + //Resetting font size if necessary
1.74 + ctx.font = "bold " + (text_height * ratio) + "px "+font;
1.75 + ctx.fillText(text, (width / 2), (height / 2), width);
1.76 + return canvas.toDataURL("image/png");
1.77 +}
1.78 +
1.79 +function render(mode, el, holder, src) {
1.80 + var dimensions = holder.dimensions,
1.81 + theme = holder.theme,
1.82 + text = holder.text ? decodeURIComponent(holder.text) : holder.text;
1.83 + var dimensions_caption = dimensions.width + "x" + dimensions.height;
1.84 + theme = (text ? extend(theme, { text: text }) : theme);
1.85 + theme = (holder.font ? extend(theme, {font: holder.font}) : theme);
1.86 +
1.87 + var ratio = 1;
1.88 + if(window.devicePixelRatio && window.devicePixelRatio > 1){
1.89 + ratio = window.devicePixelRatio;
1.90 + }
1.91 +
1.92 + if (mode == "image") {
1.93 + el.setAttribute("data-src", src);
1.94 + el.setAttribute("alt", text ? text : theme.text ? theme.text + " [" + dimensions_caption + "]" : dimensions_caption);
1.95 +
1.96 + if(fallback || !holder.auto){
1.97 + el.style.width = dimensions.width + "px";
1.98 + el.style.height = dimensions.height + "px";
1.99 + }
1.100 +
1.101 + if (fallback) {
1.102 + el.style.backgroundColor = theme.background;
1.103 +
1.104 + }
1.105 + else{
1.106 + el.setAttribute("src", draw(ctx, dimensions, theme, ratio));
1.107 + }
1.108 + } else {
1.109 + if (!fallback) {
1.110 + el.style.backgroundImage = "url(" + draw(ctx, dimensions, theme, ratio) + ")";
1.111 + el.style.backgroundSize = dimensions.width+"px "+dimensions.height+"px";
1.112 + }
1.113 + }
1.114 +};
1.115 +
1.116 +function fluid(el, holder, src) {
1.117 + var dimensions = holder.dimensions,
1.118 + theme = holder.theme,
1.119 + text = holder.text;
1.120 + var dimensions_caption = dimensions.width + "x" + dimensions.height;
1.121 + theme = (text ? extend(theme, {
1.122 + text: text
1.123 + }) : theme);
1.124 +
1.125 + var fluid = document.createElement("div");
1.126 +
1.127 + fluid.style.backgroundColor = theme.background;
1.128 + fluid.style.color = theme.foreground;
1.129 + fluid.className = el.className + " holderjs-fluid";
1.130 + fluid.style.width = holder.dimensions.width + (holder.dimensions.width.indexOf("%")>0?"":"px");
1.131 + fluid.style.height = holder.dimensions.height + (holder.dimensions.height.indexOf("%")>0?"":"px");
1.132 + fluid.id = el.id;
1.133 +
1.134 + el.style.width=0;
1.135 + el.style.height=0;
1.136 +
1.137 + if (theme.text) {
1.138 + fluid.appendChild(document.createTextNode(theme.text))
1.139 + } else {
1.140 + fluid.appendChild(document.createTextNode(dimensions_caption))
1.141 + fluid_images.push(fluid);
1.142 + setTimeout(fluid_update, 0);
1.143 + }
1.144 +
1.145 + el.parentNode.insertBefore(fluid, el.nextSibling)
1.146 +
1.147 + if(window.jQuery){
1.148 + jQuery(function($){
1.149 + $(el).on("load", function(){
1.150 + el.style.width = fluid.style.width;
1.151 + el.style.height = fluid.style.height;
1.152 + $(el).show();
1.153 + $(fluid).remove();
1.154 + });
1.155 + })
1.156 + }
1.157 +}
1.158 +
1.159 +function fluid_update() {
1.160 + for (i in fluid_images) {
1.161 + if(!fluid_images.hasOwnProperty(i)) continue;
1.162 + var el = fluid_images[i],
1.163 + label = el.firstChild;
1.164 +
1.165 + el.style.lineHeight = el.offsetHeight+"px";
1.166 + label.data = el.offsetWidth + "x" + el.offsetHeight;
1.167 + }
1.168 +}
1.169 +
1.170 +function parse_flags(flags, options) {
1.171 +
1.172 + var ret = {
1.173 + theme: settings.themes.gray
1.174 + }, render = false;
1.175 +
1.176 + for (sl = flags.length, j = 0; j < sl; j++) {
1.177 + var flag = flags[j];
1.178 + if (app.flags.dimensions.match(flag)) {
1.179 + render = true;
1.180 + ret.dimensions = app.flags.dimensions.output(flag);
1.181 + } else if (app.flags.fluid.match(flag)) {
1.182 + render = true;
1.183 + ret.dimensions = app.flags.fluid.output(flag);
1.184 + ret.fluid = true;
1.185 + } else if (app.flags.colors.match(flag)) {
1.186 + ret.theme = app.flags.colors.output(flag);
1.187 + } else if (options.themes[flag]) {
1.188 + //If a theme is specified, it will override custom colors
1.189 + ret.theme = options.themes[flag];
1.190 + } else if (app.flags.text.match(flag)) {
1.191 + ret.text = app.flags.text.output(flag);
1.192 + } else if(app.flags.font.match(flag)){
1.193 + ret.font = app.flags.font.output(flag);
1.194 + }
1.195 + else if(app.flags.auto.match(flag)){
1.196 + ret.auto = true;
1.197 + }
1.198 + }
1.199 +
1.200 + return render ? ret : false;
1.201 +
1.202 +};
1.203 +
1.204 +if (!canvas.getContext) {
1.205 + fallback = true;
1.206 +} else {
1.207 + if (canvas.toDataURL("image/png")
1.208 + .indexOf("data:image/png") < 0) {
1.209 + //Android doesn't support data URI
1.210 + fallback = true;
1.211 + } else {
1.212 + var ctx = canvas.getContext("2d");
1.213 + }
1.214 +}
1.215 +
1.216 +var fluid_images = [];
1.217 +
1.218 +var settings = {
1.219 + domain: "holder.js",
1.220 + images: "img",
1.221 + bgnodes: ".holderjs",
1.222 + themes: {
1.223 + "gray": {
1.224 + background: "#eee",
1.225 + foreground: "#aaa",
1.226 + size: 12
1.227 + },
1.228 + "social": {
1.229 + background: "#3a5a97",
1.230 + foreground: "#fff",
1.231 + size: 12
1.232 + },
1.233 + "industrial": {
1.234 + background: "#434A52",
1.235 + foreground: "#C2F200",
1.236 + size: 12
1.237 + }
1.238 + },
1.239 + stylesheet: ".holderjs-fluid {font-size:16px;font-weight:bold;text-align:center;font-family:sans-serif;margin:0}"
1.240 +};
1.241 +
1.242 +
1.243 +app.flags = {
1.244 + dimensions: {
1.245 + regex: /^(\d+)x(\d+)$/,
1.246 + output: function (val) {
1.247 + var exec = this.regex.exec(val);
1.248 + return {
1.249 + width: +exec[1],
1.250 + height: +exec[2]
1.251 + }
1.252 + }
1.253 + },
1.254 + fluid: {
1.255 + regex: /^([0-9%]+)x([0-9%]+)$/,
1.256 + output: function (val) {
1.257 + var exec = this.regex.exec(val);
1.258 + return {
1.259 + width: exec[1],
1.260 + height: exec[2]
1.261 + }
1.262 + }
1.263 + },
1.264 + colors: {
1.265 + regex: /#([0-9a-f]{3,})\:#([0-9a-f]{3,})/i,
1.266 + output: function (val) {
1.267 + var exec = this.regex.exec(val);
1.268 + return {
1.269 + size: settings.themes.gray.size,
1.270 + foreground: "#" + exec[2],
1.271 + background: "#" + exec[1]
1.272 + }
1.273 + }
1.274 + },
1.275 + text: {
1.276 + regex: /text\:(.*)/,
1.277 + output: function (val) {
1.278 + return this.regex.exec(val)[1];
1.279 + }
1.280 + },
1.281 + font: {
1.282 + regex: /font\:(.*)/,
1.283 + output: function(val){
1.284 + return this.regex.exec(val)[1];
1.285 + }
1.286 + },
1.287 + auto: {
1.288 + regex: /^auto$/
1.289 + }
1.290 +}
1.291 +
1.292 +for (var flag in app.flags) {
1.293 + if(!app.flags.hasOwnProperty(flag)) continue;
1.294 + app.flags[flag].match = function (val) {
1.295 + return val.match(this.regex)
1.296 + }
1.297 +}
1.298 +
1.299 +app.add_theme = function (name, theme) {
1.300 + name != null && theme != null && (settings.themes[name] = theme);
1.301 + return app;
1.302 +};
1.303 +
1.304 +app.add_image = function (src, el) {
1.305 + var node = selector(el);
1.306 + if (node.length) {
1.307 + for (var i = 0, l = node.length; i < l; i++) {
1.308 + var img = document.createElement("img")
1.309 + img.setAttribute("data-src", src);
1.310 + node[i].appendChild(img);
1.311 + }
1.312 + }
1.313 + return app;
1.314 +};
1.315 +
1.316 +app.run = function (o) {
1.317 + var options = extend(settings, o), images = [];
1.318 +
1.319 + if(options.images instanceof window.NodeList){
1.320 + imageNodes = options.images;
1.321 + }
1.322 + else if(options.images instanceof window.Node){
1.323 + imageNodes = [options.images];
1.324 + }
1.325 + else{
1.326 + imageNodes = selector(options.images);
1.327 + }
1.328 +
1.329 + if(options.elements instanceof window.NodeList){
1.330 + bgnodes = options.bgnodes;
1.331 + }
1.332 + else if(options.bgnodes instanceof window.Node){
1.333 + bgnodes = [options.bgnodes];
1.334 + }
1.335 + else{
1.336 + bgnodes = selector(options.bgnodes);
1.337 + }
1.338 +
1.339 + preempted = true;
1.340 +
1.341 + for (i = 0, l = imageNodes.length; i < l; i++) images.push(imageNodes[i]);
1.342 +
1.343 + var holdercss = document.getElementById("holderjs-style");
1.344 +
1.345 + if(!holdercss){
1.346 + holdercss = document.createElement("style");
1.347 + holdercss.setAttribute("id", "holderjs-style");
1.348 + holdercss.type = "text/css";
1.349 + document.getElementsByTagName("head")[0].appendChild(holdercss);
1.350 + }
1.351 +
1.352 + if(holdercss.styleSheet){
1.353 + holdercss.styleSheet += options.stylesheet;
1.354 + }
1.355 + else{
1.356 + holdercss.textContent+= options.stylesheet;
1.357 + }
1.358 +
1.359 + var cssregex = new RegExp(options.domain + "\/(.*?)\"?\\)");
1.360 +
1.361 + for (var l = bgnodes.length, i = 0; i < l; i++) {
1.362 + var src = window.getComputedStyle(bgnodes[i], null)
1.363 + .getPropertyValue("background-image");
1.364 + var flags = src.match(cssregex);
1.365 + if (flags) {
1.366 + var holder = parse_flags(flags[1].split("/"), options);
1.367 + if (holder) {
1.368 + render("background", bgnodes[i], holder, src);
1.369 + }
1.370 + }
1.371 + }
1.372 +
1.373 + for (var l = images.length, i = 0; i < l; i++) {
1.374 + var src = images[i].getAttribute("src") || images[i].getAttribute("data-src");
1.375 + if (src != null && src.indexOf(options.domain) >= 0) {
1.376 + var holder = parse_flags(src.substr(src.lastIndexOf(options.domain) + options.domain.length + 1)
1.377 + .split("/"), options);
1.378 + if (holder) {
1.379 + if (holder.fluid) {
1.380 + fluid(images[i], holder, src);
1.381 + } else {
1.382 + render("image", images[i], holder, src);
1.383 + }
1.384 + }
1.385 + }
1.386 + }
1.387 + return app;
1.388 +};
1.389 +
1.390 +contentLoaded(win, function () {
1.391 + if (window.addEventListener) {
1.392 + window.addEventListener("resize", fluid_update, false);
1.393 + window.addEventListener("orientationchange", fluid_update, false);
1.394 + } else {
1.395 + window.attachEvent("onresize", fluid_update)
1.396 + }
1.397 + preempted || app.run();
1.398 +});
1.399 +
1.400 +if ( typeof define === "function" && define.amd ) {
1.401 + define( "Holder", [], function () { return app; } );
1.402 +}
1.403 +
1.404 +})(Holder, window);
1.405 \ No newline at end of file