/*
-Holder - 1.9 - client side image placeholders
+Holder - 2.0 - 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
}
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);
+ height = parseInt(height,10);
+ width = parseInt(width,10);
+ var bigSide = Math.max(height, width)
+ var smallSide = Math.min(height, width)
+ var scale = 1 / 12;
+ var newHeight = Math.min(smallSide * 0.75, 0.75 * bigSide * scale);
return {
- height: text_height
+ height: Math.round(Math.max(template.size, newHeight))
}
}
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 width = dimensions.width * ratio,
+ height = dimensions.height * ratio;
var font = template.font ? template.font : "sans-serif";
canvas.width = width;
canvas.height = height;
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);
+ ctx.font = "bold " + text_height + "px " + font;
+ var text = template.text ? template.text : (Math.floor(dimensions.width) + "x" + Math.floor(dimensions.height));
+ var text_width = ctx.measureText(text).width;
+ if (text_width / width >= 0.75) {
+ text_height = Math.floor(text_height * 0.75 * (width/text_width));
}
//Resetting font size if necessary
- ctx.font = "bold " + (text_height * ratio) + "px "+font;
+ ctx.font = "bold " + (text_height * ratio) + "px " + font;
ctx.fillText(text, (width / 2), (height / 2), width);
return canvas.toDataURL("image/png");
}
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;
- }
-
+ theme = (text ? extend(theme, {
+ text: text
+ }) : theme);
+ theme = (holder.font ? extend(theme, {
+ font: holder.font
+ }) : theme);
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 || !holder.auto) {
+ el.style.width = dimensions.width + "px";
+ el.style.height = dimensions.height + "px";
}
-
if (fallback) {
el.style.backgroundColor = theme.background;
-
- }
- else{
+ } else {
el.setAttribute("src", draw(ctx, dimensions, theme, ratio));
}
- } else {
+ } else if (mode == "background") {
if (!fallback) {
el.style.backgroundImage = "url(" + draw(ctx, dimensions, theme, ratio) + ")";
- el.style.backgroundSize = dimensions.width+"px "+dimensions.height+"px";
+ el.style.backgroundSize = dimensions.width + "px " + dimensions.height + "px";
+ }
+ } else if (mode == "fluid") {
+ el.setAttribute("data-src", src);
+ el.setAttribute("alt", text ? text : theme.text ? theme.text + " [" + dimensions_caption + "]" : dimensions_caption);
+ if (dimensions.height.substr(-1) == "%") {
+ el.style.height = dimensions.height
+ } else {
+ el.style.height = dimensions.height + "px"
+ }
+ if (dimensions.width.substr(-1) == "%") {
+ el.style.width = dimensions.width
+ } else {
+ el.style.width = dimensions.width + "px"
+ }
+ if (el.style.display == "inline" || el.style.display == "") {
+ el.style.display = "block";
+ }
+ if (fallback) {
+ el.style.backgroundColor = theme.background;
+ } else {
+ el.holderData = holder;
+ fluid_images.push(el);
+ fluid_update(el);
}
}
};
-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))
+function fluid_update(element) {
+ var images;
+ if (element.nodeType == null) {
+ images = fluid_images;
} else {
- fluid.appendChild(document.createTextNode(dimensions_caption))
- fluid_images.push(fluid);
- setTimeout(fluid_update, 0);
+ images = [element]
}
-
- 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();
- $(fluid).remove();
- });
- })
- }
-}
-
-function fluid_update() {
- for (i in fluid_images) {
- if(!fluid_images.hasOwnProperty(i)) continue;
- var el = fluid_images[i],
- label = el.firstChild;
-
- el.style.lineHeight = el.offsetHeight+"px";
- label.data = el.offsetWidth + "x" + el.offsetHeight;
+ for (i in images) {
+ var el = images[i]
+ if (el.holderData) {
+ var holder = el.holderData;
+ el.setAttribute("src", draw(ctx, {
+ height: el.clientHeight,
+ width: el.clientWidth
+ }, holder.theme, ratio));
+ }
}
}
ret.theme = options.themes[flag];
} else if (app.flags.text.match(flag)) {
ret.text = app.flags.text.output(flag);
- } else if(app.flags.font.match(flag)){
+ } else if (app.flags.font.match(flag)) {
ret.font = app.flags.font.output(flag);
- }
- else if(app.flags.auto.match(flag)){
+ } else if (app.flags.auto.match(flag)) {
ret.auto = true;
}
}
};
+
+
if (!canvas.getContext) {
fallback = true;
} else {
}
}
+var dpr = 1, bsr = 1;
+
+if(!fallback){
+ dpr = window.devicePixelRatio || 1,
+ bsr = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
+}
+
+var ratio = dpr / bsr;
+
var fluid_images = [];
var settings = {
foreground: "#aaa",
size: 12
},
- "social": {
+ "social": {
background: "#3a5a97",
foreground: "#fff",
size: 12
},
- "industrial": {
+ "industrial": {
background: "#434A52",
foreground: "#C2F200",
size: 12
}
},
font: {
- regex: /font\:(.*)/,
- output: function(val){
- return this.regex.exec(val)[1];
- }
+ regex: /font\:(.*)/,
+ output: function (val) {
+ return this.regex.exec(val)[1];
+ }
},
auto: {
- regex: /^auto$/
+ regex: /^auto$/
}
}
for (var flag in app.flags) {
- if(!app.flags.hasOwnProperty(flag)) continue;
+ if (!app.flags.hasOwnProperty(flag)) continue;
app.flags[flag].match = function (val) {
return val.match(this.regex)
}
};
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{
+ var options = extend(settings, o),
+ images = [], imageNodes = [], bgnodes = [];
+
+ if(typeof(options.images) == "string"){
imageNodes = selector(options.images);
}
-
- if(options.elements instanceof window.NodeList){
- bgnodes = options.bgnodes;
- }
- else if(options.bgnodes instanceof window.Node){
- bgnodes = [options.bgnodes];
+ else if (window.NodeList && options.images instanceof window.NodeList) {
+ imageNodes = options.images;
+ } else if (window.Node && options.images instanceof window.Node) {
+ imageNodes = [options.images];
}
- else{
+
+ if(typeof(options.bgnodes) == "string"){
bgnodes = selector(options.bgnodes);
+ } else if (window.NodeList && options.elements instanceof window.NodeList) {
+ bgnodes = options.bgnodes;
+ } else if (window.Node && options.bgnodes instanceof window.Node) {
+ bgnodes = [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) {
+ 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;
+
+ if (!options.nocss) {
+ if (holdercss.styleSheet) {
+ holdercss.styleSheet.cssText += options.stylesheet;
+ } else {
+ holdercss.appendChild(document.createTextNode(options.stylesheet));
+ }
}
var cssregex = new RegExp(options.domain + "\/(.*?)\"?\\)");
var src = window.getComputedStyle(bgnodes[i], null)
.getPropertyValue("background-image");
var flags = src.match(cssregex);
+ var bgsrc = bgnodes[i].getAttribute("data-background-src");
+
if (flags) {
var holder = parse_flags(flags[1].split("/"), options);
if (holder) {
render("background", bgnodes[i], holder, src);
}
}
+ else if(bgsrc != null){
+ var holder = parse_flags(bgsrc.substr(bgsrc.lastIndexOf(options.domain) + options.domain.length + 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) {
+ for (l = images.length, i = 0; i < l; i++) {
+
+ var attr_src = attr_data_src = src = null;
+
+ try{
+ attr_src = images[i].getAttribute("src");
+ attr_datasrc = images[i].getAttribute("data-src");
+ }catch(e){}
+
+ if (attr_datasrc == null && !! attr_src && attr_src.indexOf(options.domain) >= 0) {
+ src = attr_src;
+ } else if ( !! attr_datasrc && attr_datasrc.indexOf(options.domain) >= 0) {
+ src = attr_datasrc;
+ }
+
+ if (src) {
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);
+ render("fluid", images[i], holder, src)
} else {
render("image", images[i], holder, src);
}
preempted || app.run();
});
-if ( typeof define === "function" && define.amd ) {
- define( "Holder", [], function () { return app; } );
+if (typeof define === "function" && define.amd) {
+ define("Holder", [], function () {
+ return app;
+ });
}
})(Holder, window);
projects / thirdparty / bootstrap.git / commitdiff
