aboutsummaryrefslogtreecommitdiff
path: root/docs-assets/js/holder.js
diff options
context:
space:
mode:
authorMark Otto <[email protected]>2013-12-14 15:38:21 -0800
committerMark Otto <[email protected]>2013-12-14 15:38:21 -0800
commita54dbfdf2a08ff04fc65f8e4f77ee5dc76bf4ef3 (patch)
tree9b1c5697a731543a86711b016e1986ec1e81dad4 /docs-assets/js/holder.js
parent80e86442308b2cc86ba948de87e854057933e3ab (diff)
parentf1869771bc8b8e8a6c7a98385ec58e0bf0d2d98e (diff)
downloadbootstrap-a54dbfdf2a08ff04fc65f8e4f77ee5dc76bf4ef3.tar.xz
bootstrap-a54dbfdf2a08ff04fc65f8e4f77ee5dc76bf4ef3.zip
Merge branch 'master' into pr/10951
Conflicts: dist/css/bootstrap.min.css less/modals.less
Diffstat (limited to 'docs-assets/js/holder.js')
-rw-r--r--[-rwxr-xr-x]docs-assets/js/holder.js453
1 files changed, 267 insertions, 186 deletions
diff --git a/docs-assets/js/holder.js b/docs-assets/js/holder.js
index f717054c3..85f0441b0 100755..100644
--- a/docs-assets/js/holder.js
+++ b/docs-assets/js/holder.js
@@ -1,9 +1,9 @@
/*
-Holder - 2.0 - client side image placeholders
+Holder - 2.2 - 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
+Provided under the MIT License.
Commercial use requires attribution.
*/
@@ -14,35 +14,164 @@ var Holder = Holder || {};
var preempted = false,
fallback = false,
canvas = document.createElement('canvas');
+var dpr = 1, bsr = 1;
+var resizable_images = [];
+
+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");
+ }
+}
+
+if(!fallback){
+ dpr = window.devicePixelRatio || 1,
+ bsr = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
+}
+
+var ratio = dpr / bsr;
+
+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
+ },
+ "sky": {
+ background: "#0D8FDB",
+ foreground: "#fff",
+ size: 12
+ },
+ "vine": {
+ background: "#39DBAC",
+ foreground: "#1E292C",
+ size: 12
+ },
+ "lava": {
+ background: "#F8591A",
+ foreground: "#1C2846",
+ size: 12
+ }
+ },
+ stylesheet: ""
+};
+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$/
+ },
+ textmode: {
+ regex: /textmode\:(.*)/,
+ output: function(val){
+ return this.regex.exec(val)[1];
+ }
+ }
+}
//getElementsByClassName polyfill
document.getElementsByClassName||(document.getElementsByClassName=function(e){var t=document,n,r,i,s=[];if(t.querySelectorAll)return t.querySelectorAll("."+e);if(t.evaluate){r=".//*[contains(concat(' ', @class, ' '), ' "+e+" ')]",n=t.evaluate(r,t,null,0,null);while(i=n.iterateNext())s.push(i)}else{n=t.getElementsByTagName("*"),r=new RegExp("(^|\\s)"+e+"(\\s|$)");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})
+window.getComputedStyle||(window.getComputedStyle=function(e){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)}};
+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;
+ 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}
+function extend(a,b){
+ var c={};
+ for(var i in a){
+ if(a.hasOwnProperty(i)){
+ c[i]=a[i];
+ }
+ }
+ for(var i in b){
+ if(b.hasOwnProperty(i)){
+ c[i]=b[i];
+ }
+ }
+ return c
+}
//hasOwnProperty polyfill
if (!Object.prototype.hasOwnProperty)
- Object.prototype.hasOwnProperty = function(prop) {
+ /*jshint -W001, -W103 */
+ Object.prototype.hasOwnProperty = function(prop) {
var proto = this.__proto__ || this.constructor.prototype;
return (prop in this) && (!(prop in proto) || proto[prop] !== this[prop]);
}
+ /*jshint +W001, +W103 */
function text_size(width, height, template) {
- height = parseInt(height,10);
- width = parseInt(width,10);
+ height = parseInt(height, 10);
+ width = parseInt(width, 10);
var bigSide = Math.max(height, width)
var smallSide = Math.min(height, width)
var scale = 1 / 12;
@@ -52,7 +181,15 @@ function text_size(width, height, template) {
}
}
-function draw(ctx, dimensions, template, ratio) {
+function draw(args) {
+ var ctx = args.ctx;
+ var dimensions = args.dimensions;
+ var template = args.template;
+ var ratio = args.ratio;
+ var holder = args.holder;
+ var literal = holder.textmode == "literal";
+ var exact = holder.textmode == "exact";
+
var ts = text_size(dimensions.width, dimensions.height, template);
var text_height = ts.height;
var width = dimensions.width * ratio,
@@ -67,9 +204,17 @@ function draw(ctx, dimensions, template, ratio) {
ctx.fillStyle = template.foreground;
ctx.font = "bold " + text_height + "px " + font;
var text = template.text ? template.text : (Math.floor(dimensions.width) + "x" + Math.floor(dimensions.height));
+ if (literal) {
+ var dimensions = holder.dimensions;
+ text = dimensions.width + "x" + dimensions.height;
+ }
+ else if(exact && holder.exact_dimensions){
+ var dimensions = holder.exact_dimensions;
+ 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));
+ text_height = Math.floor(text_height * 0.75 * (width / text_width));
}
//Resetting font size if necessary
ctx.font = "bold " + (text_height * ratio) + "px " + font;
@@ -78,6 +223,7 @@ function draw(ctx, dimensions, template, ratio) {
}
function render(mode, el, holder, src) {
+
var dimensions = holder.dimensions,
theme = holder.theme,
text = holder.text ? decodeURIComponent(holder.text) : holder.text;
@@ -88,8 +234,11 @@ function render(mode, el, holder, src) {
theme = (holder.font ? extend(theme, {
font: holder.font
}) : theme);
+ el.setAttribute("data-src", src);
+ holder.theme = theme;
+ el.holder_data = holder;
+
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";
@@ -98,64 +247,109 @@ function render(mode, el, holder, src) {
if (fallback) {
el.style.backgroundColor = theme.background;
} else {
- el.setAttribute("src", draw(ctx, dimensions, theme, ratio));
+ el.setAttribute("src", draw({ctx: ctx, dimensions: dimensions, template: theme, ratio:ratio, holder: holder}));
+
+ if(holder.textmode && holder.textmode == "exact"){
+ resizable_images.push(el);
+ resizable_update(el);
+ }
+
}
} else if (mode == "background") {
if (!fallback) {
- el.style.backgroundImage = "url(" + draw(ctx, dimensions, theme, ratio) + ")";
+ el.style.backgroundImage = "url(" + draw({ctx:ctx, dimensions: dimensions, template: theme, ratio: ratio, holder: holder}) + ")";
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) == "%") {
+ if (dimensions.height.slice(-1) == "%") {
el.style.height = dimensions.height
} else {
el.style.height = dimensions.height + "px"
}
- if (dimensions.width.substr(-1) == "%") {
+ if (dimensions.width.slice(-1) == "%") {
el.style.width = dimensions.width
} else {
el.style.width = dimensions.width + "px"
}
- if (el.style.display == "inline" || el.style.display == "") {
+ if (el.style.display == "inline" || el.style.display === "" || el.style.display == "none") {
el.style.display = "block";
}
if (fallback) {
el.style.backgroundColor = theme.background;
} else {
- el.holderData = holder;
- fluid_images.push(el);
- fluid_update(el);
+ resizable_images.push(el);
+ resizable_update(el);
}
}
-};
+}
+
+function dimension_check(el, callback) {
+ var dimensions = {
+ height: el.clientHeight,
+ width: el.clientWidth
+ };
+ if (!dimensions.height && !dimensions.width) {
+ if (el.hasAttribute("data-holder-invisible")) {
+ throw new Error("Holder: placeholder is not visible");
+ } else {
+ el.setAttribute("data-holder-invisible", true)
+ setTimeout(function () {
+ callback.call(this, el)
+ }, 1)
+ return null;
+ }
+ } else {
+ el.removeAttribute("data-holder-invisible")
+ }
+ return dimensions;
+}
-function fluid_update(element) {
+function resizable_update(element) {
var images;
if (element.nodeType == null) {
- images = fluid_images;
+ images = resizable_images;
} else {
images = [element]
}
- for (i in images) {
+ for (var i in images) {
+ if (!images.hasOwnProperty(i)) {
+ continue;
+ }
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));
+ if (el.holder_data) {
+ var holder = el.holder_data;
+ var dimensions = dimension_check(el, resizable_update)
+ if(dimensions){
+ if(holder.fluid){
+ el.setAttribute("src", draw({
+ ctx: ctx,
+ dimensions: dimensions,
+ template: holder.theme,
+ ratio: ratio,
+ holder: holder
+ }))
+ }
+ if(holder.textmode && holder.textmode == "exact"){
+ holder.exact_dimensions = dimensions;
+ el.setAttribute("src", draw({
+ ctx: ctx,
+ dimensions: holder.dimensions,
+ template: holder.theme,
+ ratio: ratio,
+ holder: holder
+ }))
+ }
+ }
}
}
}
function parse_flags(flags, options) {
-
var ret = {
- theme: settings.themes.gray
- }, render = false;
-
+ theme: extend(settings.themes.gray, {})
+ };
+ var render = false;
for (sl = flags.length, j = 0; j < sl; j++) {
var flag = flags[j];
if (app.flags.dimensions.match(flag)) {
@@ -165,121 +359,24 @@ function parse_flags(flags, options) {
render = true;
ret.dimensions = app.flags.fluid.output(flag);
ret.fluid = true;
+ } else if (app.flags.textmode.match(flag)) {
+ ret.textmode = app.flags.textmode.output(flag)
} 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);
+ if(options.themes.hasOwnProperty(flag)){
+ ret.theme = extend(options.themes[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;
+ } else if (app.flags.text.match(flag)) {
+ ret.text = app.flags.text.output(flag);
}
}
-
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 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 = {
- 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) {
@@ -288,12 +385,10 @@ for (var flag in app.flags) {
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) {
@@ -305,32 +400,29 @@ app.add_image = function (src, el) {
}
return app;
};
-
app.run = function (o) {
+ preempted = true;
+
var options = extend(settings, o),
- images = [], imageNodes = [], bgnodes = [];
-
- if(typeof(options.images) == "string"){
- imageNodes = selector(options.images);
- }
- else if (window.NodeList && options.images instanceof window.NodeList) {
+ images = [],
+ imageNodes = [],
+ bgnodes = [];
+ if (typeof (options.images) == "string") {
+ imageNodes = selector(options.images);
+ } else if (window.NodeList && options.images instanceof window.NodeList) {
imageNodes = options.images;
} else if (window.Node && options.images instanceof window.Node) {
imageNodes = [options.images];
}
-
- if(typeof(options.bgnodes) == "string"){
- bgnodes = selector(options.bgnodes);
+
+ 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");
@@ -338,53 +430,44 @@ app.run = function (o) {
holdercss.type = "text/css";
document.getElementsByTagName("head")[0].appendChild(holdercss);
}
-
if (!options.nocss) {
- if (holdercss.styleSheet) {
- holdercss.styleSheet.cssText += options.stylesheet;
- } else {
- holdercss.appendChild(document.createTextNode(options.stylesheet));
- }
+ if (holdercss.styleSheet) {
+ holdercss.styleSheet.cssText += options.stylesheet;
+ } else {
+ holdercss.appendChild(document.createTextNode(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);
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)
+ } 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);
- }
+ if (holder) {
+ render("background", bgnodes[i], holder, src);
+ }
}
}
-
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){}
-
+ var attr_data_src, attr_src;
+ 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);
@@ -399,19 +482,17 @@ app.run = function (o) {
}
return app;
};
-
contentLoaded(win, function () {
if (window.addEventListener) {
- window.addEventListener("resize", fluid_update, false);
- window.addEventListener("orientationchange", fluid_update, false);
+ window.addEventListener("resize", resizable_update, false);
+ window.addEventListener("orientationchange", resizable_update, false);
} else {
- window.attachEvent("onresize", fluid_update)
+ window.attachEvent("onresize", resizable_update)
}
preempted || app.run();
});
-
if (typeof define === "function" && define.amd) {
- define("Holder", [], function () {
+ define([], function () {
return app;
});
}