--- /dev/null
+/*
+
+Holder - 1.9 - client side image placeholders
+(c) 2012-2013 Ivan Malopinsky / http://imsky.co
+
+Provided under the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
+Commercial use requires attribution.
+
+*/
+
+var Holder = Holder || {};
+(function (app, win) {
+
+var preempted = false,
+fallback = false,
+canvas = document.createElement('canvas');
+
+//getElementsByClassName polyfill
+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})
+
+//getComputedStyle polyfill
+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})
+
+//http://javascript.nwbox.com/ContentLoaded by Diego Perini with modifications
+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)}};
+
+//https://gist.github.com/991057 by Jed Schmidt with modifications
+function selector(a){
+ a=a.match(/^(\W)?(.*)/);var b=document["getElement"+(a[1]?a[1]=="#"?"ById":"sByClassName":"sByTagName")](a[2]);
+ var ret=[]; b!=null&&(b.length?ret=b:b.length==0?ret=b:ret=[b]); return ret;
+}
+
+//shallow object property extend
+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}
+
+//hasOwnProperty polyfill
+if (!Object.prototype.hasOwnProperty)
+ Object.prototype.hasOwnProperty = function(prop) {
+ var proto = this.__proto__ || this.constructor.prototype;
+ return (prop in this) && (!(prop in proto) || proto[prop] !== this[prop]);
+ }
+
+function text_size(width, height, template) {
+ var dimension_arr = [height, width].sort();
+ var maxFactor = Math.round(dimension_arr[1] / 16),
+ minFactor = Math.round(dimension_arr[0] / 16);
+ var text_height = Math.max(template.size, maxFactor);
+ return {
+ height: text_height
+ }
+}
+
+function draw(ctx, dimensions, template, ratio) {
+ var ts = text_size(dimensions.width, dimensions.height, template);
+ var text_height = ts.height;
+ var width = dimensions.width * ratio, height = dimensions.height * ratio;
+ var font = template.font ? template.font : "sans-serif";
+ canvas.width = width;
+ canvas.height = height;
+ ctx.textAlign = "center";
+ ctx.textBaseline = "middle";
+ ctx.fillStyle = template.background;
+ ctx.fillRect(0, 0, width, height);
+ ctx.fillStyle = template.foreground;
+ ctx.font = "bold " + text_height + "px "+font;
+ var text = template.text ? template.text : (dimensions.width + "x" + dimensions.height);
+ if (ctx.measureText(text).width / width > 1) {
+ text_height = template.size / (ctx.measureText(text).width / width);
+ }
+ //Resetting font size if necessary
+ ctx.font = "bold " + (text_height * ratio) + "px "+font;
+ ctx.fillText(text, (width / 2), (height / 2), width);
+ return canvas.toDataURL("image/png");
+}
+
+function render(mode, el, holder, src) {
+ var dimensions = holder.dimensions,
+ theme = holder.theme,
+ text = holder.text ? decodeURIComponent(holder.text) : holder.text;
+ var dimensions_caption = dimensions.width + "x" + dimensions.height;
+ theme = (text ? extend(theme, { text: text }) : theme);
+ theme = (holder.font ? extend(theme, {font: holder.font}) : theme);
+
+ var ratio = 1;
+ if(window.devicePixelRatio && window.devicePixelRatio > 1){
+ ratio = window.devicePixelRatio;
+ }
+
+ if (mode == "image") {
+ el.setAttribute("data-src", src);
+ el.setAttribute("alt", text ? text : theme.text ? theme.text + " [" + dimensions_caption + "]" : dimensions_caption);
+
+ if(fallback || !holder.auto){
+ el.style.width = dimensions.width + "px";
+ el.style.height = dimensions.height + "px";
+ }
+
+ if (fallback) {
+ el.style.backgroundColor = theme.background;
+
+ }
+ else{
+ el.setAttribute("src", draw(ctx, dimensions, theme, ratio));
+ }
+ } else {
+ if (!fallback) {
+ el.style.backgroundImage = "url(" + draw(ctx, dimensions, theme, ratio) + ")";
+ el.style.backgroundSize = dimensions.width+"px "+dimensions.height+"px";
+ }
+ }
+};
+
+function fluid(el, holder, src) {
+ var dimensions = holder.dimensions,
+ theme = holder.theme,
+ text = holder.text;
+ var dimensions_caption = dimensions.width + "x" + dimensions.height;
+ theme = (text ? extend(theme, {
+ text: text
+ }) : theme);
+
+ var fluid = document.createElement("div");
+
+ fluid.style.backgroundColor = theme.background;
+ fluid.style.color = theme.foreground;
+ fluid.className = el.className + " holderjs-fluid";
+ fluid.style.width = holder.dimensions.width + (holder.dimensions.width.indexOf("%")>0?"":"px");
+ fluid.style.height = holder.dimensions.height + (holder.dimensions.height.indexOf("%")>0?"":"px");
+ fluid.id = el.id;
+
+ el.style.width=0;
+ el.style.height=0;
+
+ if (theme.text) {
+ fluid.appendChild(document.createTextNode(theme.text))
+ } else {
+ fluid.appendChild(document.createTextNode(dimensions_caption))
+ fluid_images.push(fluid);
+ setTimeout(fluid_update, 0);
+ }
+
+ el.parentNode.insertBefore(fluid, el.nextSibling)
+
+ if(window.jQuery){
+ jQuery(function($){
+ $(el).on("load", function(){
+ el.style.width = fluid.style.width;
+ el.style.height = fluid.style.height;
+ $(el).show();
+ $(fluid).remove();
+ });
+ })
+ }
+}
+
+function fluid_update() {
+ for (i in fluid_images) {
+ if(!fluid_images.hasOwnProperty(i)) continue;
+ var el = fluid_images[i],
+ label = el.firstChild;
+
+ el.style.lineHeight = el.offsetHeight+"px";
+ label.data = el.offsetWidth + "x" + el.offsetHeight;
+ }
+}
+
+function parse_flags(flags, options) {
+
+ var ret = {
+ theme: settings.themes.gray
+ }, render = false;
+
+ for (sl = flags.length, j = 0; j < sl; j++) {
+ var flag = flags[j];
+ if (app.flags.dimensions.match(flag)) {
+ render = true;
+ ret.dimensions = app.flags.dimensions.output(flag);
+ } else if (app.flags.fluid.match(flag)) {
+ render = true;
+ ret.dimensions = app.flags.fluid.output(flag);
+ ret.fluid = true;
+ } else if (app.flags.colors.match(flag)) {
+ ret.theme = app.flags.colors.output(flag);
+ } else if (options.themes[flag]) {
+ //If a theme is specified, it will override custom colors
+ ret.theme = options.themes[flag];
+ } else if (app.flags.text.match(flag)) {
+ ret.text = app.flags.text.output(flag);
+ } else if(app.flags.font.match(flag)){
+ ret.font = app.flags.font.output(flag);
+ }
+ else if(app.flags.auto.match(flag)){
+ ret.auto = true;
+ }
+ }
+
+ return render ? ret : false;
+
+};
+
+if (!canvas.getContext) {
+ fallback = true;
+} else {
+ if (canvas.toDataURL("image/png")
+ .indexOf("data:image/png") < 0) {
+ //Android doesn't support data URI
+ fallback = true;
+ } else {
+ var ctx = canvas.getContext("2d");
+ }
+}
+
+var fluid_images = [];
+
+var settings = {
+ domain: "holder.js",
+ images: "img",
+ bgnodes: ".holderjs",
+ themes: {
+ "gray": {
+ background: "#eee",
+ foreground: "#aaa",
+ size: 12
+ },
+ "social": {
+ background: "#3a5a97",
+ foreground: "#fff",
+ size: 12
+ },
+ "industrial": {
+ background: "#434A52",
+ foreground: "#C2F200",
+ size: 12
+ }
+ },
+ stylesheet: ".holderjs-fluid {font-size:16px;font-weight:bold;text-align:center;font-family:sans-serif;margin:0}"
+};
+
+
+app.flags = {
+ dimensions: {
+ regex: /^(\d+)x(\d+)$/,
+ output: function (val) {
+ var exec = this.regex.exec(val);
+ return {
+ width: +exec[1],
+ height: +exec[2]
+ }
+ }
+ },
+ fluid: {
+ regex: /^([0-9%]+)x([0-9%]+)$/,
+ output: function (val) {
+ var exec = this.regex.exec(val);
+ return {
+ width: exec[1],
+ height: exec[2]
+ }
+ }
+ },
+ colors: {
+ regex: /#([0-9a-f]{3,})\:#([0-9a-f]{3,})/i,
+ output: function (val) {
+ var exec = this.regex.exec(val);
+ return {
+ size: settings.themes.gray.size,
+ foreground: "#" + exec[2],
+ background: "#" + exec[1]
+ }
+ }
+ },
+ text: {
+ regex: /text\:(.*)/,
+ output: function (val) {
+ return this.regex.exec(val)[1];
+ }
+ },
+ font: {
+ regex: /font\:(.*)/,
+ output: function(val){
+ return this.regex.exec(val)[1];
+ }
+ },
+ auto: {
+ regex: /^auto$/
+ }
+}
+
+for (var flag in app.flags) {
+ if(!app.flags.hasOwnProperty(flag)) continue;
+ app.flags[flag].match = function (val) {
+ return val.match(this.regex)
+ }
+}
+
+app.add_theme = function (name, theme) {
+ name != null && theme != null && (settings.themes[name] = theme);
+ return app;
+};
+
+app.add_image = function (src, el) {
+ var node = selector(el);
+ if (node.length) {
+ for (var i = 0, l = node.length; i < l; i++) {
+ var img = document.createElement("img")
+ img.setAttribute("data-src", src);
+ node[i].appendChild(img);
+ }
+ }
+ return app;
+};
+
+app.run = function (o) {
+ var options = extend(settings, o), images = [];
+
+ if(options.images instanceof window.NodeList){
+ imageNodes = options.images;
+ }
+ else if(options.images instanceof window.Node){
+ imageNodes = [options.images];
+ }
+ else{
+ imageNodes = selector(options.images);
+ }
+
+ if(options.elements instanceof window.NodeList){
+ bgnodes = options.bgnodes;
+ }
+ else if(options.bgnodes instanceof window.Node){
+ bgnodes = [options.bgnodes];
+ }
+ else{
+ bgnodes = selector(options.bgnodes);
+ }
+
+ preempted = true;
+
+ for (i = 0, l = imageNodes.length; i < l; i++) images.push(imageNodes[i]);
+
+ var holdercss = document.getElementById("holderjs-style");
+
+ if(!holdercss){
+ holdercss = document.createElement("style");
+ holdercss.setAttribute("id", "holderjs-style");
+ holdercss.type = "text/css";
+ document.getElementsByTagName("head")[0].appendChild(holdercss);
+ }
+
+ if(holdercss.styleSheet){
+ holdercss.styleSheet += options.stylesheet;
+ }
+ else{
+ holdercss.textContent+= options.stylesheet;
+ }
+
+ var cssregex = new RegExp(options.domain + "\/(.*?)\"?\\)");
+
+ for (var l = bgnodes.length, i = 0; i < l; i++) {
+ var src = window.getComputedStyle(bgnodes[i], null)
+ .getPropertyValue("background-image");
+ var flags = src.match(cssregex);
+ if (flags) {
+ var holder = parse_flags(flags[1].split("/"), options);
+ if (holder) {
+ render("background", bgnodes[i], holder, src);
+ }
+ }
+ }
+
+ for (var l = images.length, i = 0; i < l; i++) {
+ var src = images[i].getAttribute("src") || images[i].getAttribute("data-src");
+ if (src != null && src.indexOf(options.domain) >= 0) {
+ var holder = parse_flags(src.substr(src.lastIndexOf(options.domain) + options.domain.length + 1)
+ .split("/"), options);
+ if (holder) {
+ if (holder.fluid) {
+ fluid(images[i], holder, src);
+ } else {
+ render("image", images[i], holder, src);
+ }
+ }
+ }
+ }
+ return app;
+};
+
+contentLoaded(win, function () {
+ if (window.addEventListener) {
+ window.addEventListener("resize", fluid_update, false);
+ window.addEventListener("orientationchange", fluid_update, false);
+ } else {
+ window.attachEvent("onresize", fluid_update)
+ }
+ preempted || app.run();
+});
+
+if ( typeof define === "function" && define.amd ) {
+ define( "Holder", [], function () { return app; } );
+}
+
+})(Holder, window);
\ No newline at end of file
projects / bootswatch / blobdiff