mirror of
https://github.com/imsky/holder.git
synced 2026-05-14 03:01:33 -04:00
2689 lines
81 KiB
JavaScript
2689 lines
81 KiB
JavaScript
/*!
|
|
|
|
Holder - client side image placeholders
|
|
Version 2.8.2+c34r9
|
|
© 2015 Ivan Malopinsky - http://imsky.co
|
|
|
|
Site: http://holderjs.com
|
|
Issues: https://github.com/imsky/holder/issues
|
|
License: MIT
|
|
|
|
*/
|
|
(function (window) {
|
|
if (!window.document) return;
|
|
var document = window.document;
|
|
|
|
//https://github.com/inexorabletash/polyfill/blob/master/web.js
|
|
if (!document.querySelectorAll) {
|
|
document.querySelectorAll = function (selectors) {
|
|
var style = document.createElement('style'), elements = [], element;
|
|
document.documentElement.firstChild.appendChild(style);
|
|
document._qsa = [];
|
|
|
|
style.styleSheet.cssText = selectors + '{x-qsa:expression(document._qsa && document._qsa.push(this))}';
|
|
window.scrollBy(0, 0);
|
|
style.parentNode.removeChild(style);
|
|
|
|
while (document._qsa.length) {
|
|
element = document._qsa.shift();
|
|
element.style.removeAttribute('x-qsa');
|
|
elements.push(element);
|
|
}
|
|
document._qsa = null;
|
|
return elements;
|
|
};
|
|
}
|
|
|
|
if (!document.querySelector) {
|
|
document.querySelector = function (selectors) {
|
|
var elements = document.querySelectorAll(selectors);
|
|
return (elements.length) ? elements[0] : null;
|
|
};
|
|
}
|
|
|
|
if (!document.getElementsByClassName) {
|
|
document.getElementsByClassName = function (classNames) {
|
|
classNames = String(classNames).replace(/^|\s+/g, '.');
|
|
return document.querySelectorAll(classNames);
|
|
};
|
|
}
|
|
|
|
//https://github.com/inexorabletash/polyfill
|
|
// ES5 15.2.3.14 Object.keys ( O )
|
|
// https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/keys
|
|
if (!Object.keys) {
|
|
Object.keys = function (o) {
|
|
if (o !== Object(o)) { throw TypeError('Object.keys called on non-object'); }
|
|
var ret = [], p;
|
|
for (p in o) {
|
|
if (Object.prototype.hasOwnProperty.call(o, p)) {
|
|
ret.push(p);
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
}
|
|
|
|
// ES5 15.4.4.18 Array.prototype.forEach ( callbackfn [ , thisArg ] )
|
|
// From https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/forEach
|
|
if (!Array.prototype.forEach) {
|
|
Array.prototype.forEach = function (fun /*, thisp */) {
|
|
if (this === void 0 || this === null) { throw TypeError(); }
|
|
|
|
var t = Object(this);
|
|
var len = t.length >>> 0;
|
|
if (typeof fun !== "function") { throw TypeError(); }
|
|
|
|
var thisp = arguments[1], i;
|
|
for (i = 0; i < len; i++) {
|
|
if (i in t) {
|
|
fun.call(thisp, t[i], i, t);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
//https://github.com/inexorabletash/polyfill/blob/master/web.js
|
|
(function (global) {
|
|
var B64_ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
|
|
global.atob = global.atob || function (input) {
|
|
input = String(input);
|
|
var position = 0,
|
|
output = [],
|
|
buffer = 0, bits = 0, n;
|
|
|
|
input = input.replace(/\s/g, '');
|
|
if ((input.length % 4) === 0) { input = input.replace(/=+$/, ''); }
|
|
if ((input.length % 4) === 1) { throw Error('InvalidCharacterError'); }
|
|
if (/[^+/0-9A-Za-z]/.test(input)) { throw Error('InvalidCharacterError'); }
|
|
|
|
while (position < input.length) {
|
|
n = B64_ALPHABET.indexOf(input.charAt(position));
|
|
buffer = (buffer << 6) | n;
|
|
bits += 6;
|
|
|
|
if (bits === 24) {
|
|
output.push(String.fromCharCode((buffer >> 16) & 0xFF));
|
|
output.push(String.fromCharCode((buffer >> 8) & 0xFF));
|
|
output.push(String.fromCharCode(buffer & 0xFF));
|
|
bits = 0;
|
|
buffer = 0;
|
|
}
|
|
position += 1;
|
|
}
|
|
|
|
if (bits === 12) {
|
|
buffer = buffer >> 4;
|
|
output.push(String.fromCharCode(buffer & 0xFF));
|
|
} else if (bits === 18) {
|
|
buffer = buffer >> 2;
|
|
output.push(String.fromCharCode((buffer >> 8) & 0xFF));
|
|
output.push(String.fromCharCode(buffer & 0xFF));
|
|
}
|
|
|
|
return output.join('');
|
|
};
|
|
|
|
global.btoa = global.btoa || function (input) {
|
|
input = String(input);
|
|
var position = 0,
|
|
out = [],
|
|
o1, o2, o3,
|
|
e1, e2, e3, e4;
|
|
|
|
if (/[^\x00-\xFF]/.test(input)) { throw Error('InvalidCharacterError'); }
|
|
|
|
while (position < input.length) {
|
|
o1 = input.charCodeAt(position++);
|
|
o2 = input.charCodeAt(position++);
|
|
o3 = input.charCodeAt(position++);
|
|
|
|
// 111111 112222 222233 333333
|
|
e1 = o1 >> 2;
|
|
e2 = ((o1 & 0x3) << 4) | (o2 >> 4);
|
|
e3 = ((o2 & 0xf) << 2) | (o3 >> 6);
|
|
e4 = o3 & 0x3f;
|
|
|
|
if (position === input.length + 2) {
|
|
e3 = 64; e4 = 64;
|
|
}
|
|
else if (position === input.length + 1) {
|
|
e4 = 64;
|
|
}
|
|
|
|
out.push(B64_ALPHABET.charAt(e1),
|
|
B64_ALPHABET.charAt(e2),
|
|
B64_ALPHABET.charAt(e3),
|
|
B64_ALPHABET.charAt(e4));
|
|
}
|
|
|
|
return out.join('');
|
|
};
|
|
}(window));
|
|
|
|
//https://gist.github.com/jimeh/332357
|
|
if (!Object.prototype.hasOwnProperty){
|
|
/*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 */
|
|
}
|
|
|
|
// @license http://opensource.org/licenses/MIT
|
|
// copyright Paul Irish 2015
|
|
|
|
|
|
// Date.now() is supported everywhere except IE8. For IE8 we use the Date.now polyfill
|
|
// github.com/Financial-Times/polyfill-service/blob/master/polyfills/Date.now/polyfill.js
|
|
// as Safari 6 doesn't have support for NavigationTiming, we use a Date.now() timestamp for relative values
|
|
|
|
// if you want values similar to what you'd get with real perf.now, place this towards the head of the page
|
|
// but in reality, you're just getting the delta between now() calls, so it's not terribly important where it's placed
|
|
|
|
|
|
(function(){
|
|
|
|
if ('performance' in window === false) {
|
|
window.performance = {};
|
|
}
|
|
|
|
Date.now = (Date.now || function () { // thanks IE8
|
|
return new Date().getTime();
|
|
});
|
|
|
|
if ('now' in window.performance === false){
|
|
|
|
var nowOffset = Date.now();
|
|
|
|
if (performance.timing && performance.timing.navigationStart){
|
|
nowOffset = performance.timing.navigationStart;
|
|
}
|
|
|
|
window.performance.now = function now(){
|
|
return Date.now() - nowOffset;
|
|
};
|
|
}
|
|
|
|
})();
|
|
|
|
//requestAnimationFrame polyfill for older Firefox/Chrome versions
|
|
if (!window.requestAnimationFrame) {
|
|
if (window.webkitRequestAnimationFrame) {
|
|
//https://github.com/Financial-Times/polyfill-service/blob/master/polyfills/requestAnimationFrame/polyfill-webkit.js
|
|
(function (global) {
|
|
// window.requestAnimationFrame
|
|
global.requestAnimationFrame = function (callback) {
|
|
return webkitRequestAnimationFrame(function () {
|
|
callback(global.performance.now());
|
|
});
|
|
};
|
|
|
|
// window.cancelAnimationFrame
|
|
global.cancelAnimationFrame = webkitCancelAnimationFrame;
|
|
}(window));
|
|
} else if (window.mozRequestAnimationFrame) {
|
|
//https://github.com/Financial-Times/polyfill-service/blob/master/polyfills/requestAnimationFrame/polyfill-moz.js
|
|
(function (global) {
|
|
// window.requestAnimationFrame
|
|
global.requestAnimationFrame = function (callback) {
|
|
return mozRequestAnimationFrame(function () {
|
|
callback(global.performance.now());
|
|
});
|
|
};
|
|
|
|
// window.cancelAnimationFrame
|
|
global.cancelAnimationFrame = mozCancelAnimationFrame;
|
|
}(window));
|
|
} else {
|
|
(function (global) {
|
|
global.requestAnimationFrame = function (callback) {
|
|
return global.setTimeout(callback, 1000 / 60);
|
|
};
|
|
|
|
global.cancelAnimationFrame = global.clearTimeout;
|
|
})(window);
|
|
}
|
|
}
|
|
})(this);
|
|
|
|
(function webpackUniversalModuleDefinition(root, factory) {
|
|
if(typeof exports === 'object' && typeof module === 'object')
|
|
module.exports = factory();
|
|
else if(typeof define === 'function' && define.amd)
|
|
define(factory);
|
|
else if(typeof exports === 'object')
|
|
exports["Holder"] = factory();
|
|
else
|
|
root["Holder"] = factory();
|
|
})(this, function() {
|
|
return /******/ (function(modules) { // webpackBootstrap
|
|
/******/ // The module cache
|
|
/******/ var installedModules = {};
|
|
|
|
/******/ // The require function
|
|
/******/ function __webpack_require__(moduleId) {
|
|
|
|
/******/ // Check if module is in cache
|
|
/******/ if(installedModules[moduleId])
|
|
/******/ return installedModules[moduleId].exports;
|
|
|
|
/******/ // Create a new module (and put it into the cache)
|
|
/******/ var module = installedModules[moduleId] = {
|
|
/******/ exports: {},
|
|
/******/ id: moduleId,
|
|
/******/ loaded: false
|
|
/******/ };
|
|
|
|
/******/ // Execute the module function
|
|
/******/ modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
|
|
|
|
/******/ // Flag the module as loaded
|
|
/******/ module.loaded = true;
|
|
|
|
/******/ // Return the exports of the module
|
|
/******/ return module.exports;
|
|
/******/ }
|
|
|
|
|
|
/******/ // expose the modules object (__webpack_modules__)
|
|
/******/ __webpack_require__.m = modules;
|
|
|
|
/******/ // expose the module cache
|
|
/******/ __webpack_require__.c = installedModules;
|
|
|
|
/******/ // __webpack_public_path__
|
|
/******/ __webpack_require__.p = "";
|
|
|
|
/******/ // Load entry module and return exports
|
|
/******/ return __webpack_require__(0);
|
|
/******/ })
|
|
/************************************************************************/
|
|
/******/ ([
|
|
/* 0 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/*
|
|
Holder.js - client side image placeholders
|
|
(c) 2012-2015 Ivan Malopinsky - http://imsky.co
|
|
*/
|
|
|
|
module.exports = __webpack_require__(1);
|
|
|
|
|
|
/***/ },
|
|
/* 1 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/* WEBPACK VAR INJECTION */(function(global) {/*
|
|
Holder.js - client side image placeholders
|
|
(c) 2012-2015 Ivan Malopinsky - http://imsky.co
|
|
*/
|
|
|
|
//Libraries and functions
|
|
var onDomReady = __webpack_require__(2);
|
|
var querystring = __webpack_require__(3);
|
|
|
|
var SceneGraph = __webpack_require__(4);
|
|
var utils = __webpack_require__(5);
|
|
var SVG = __webpack_require__(6);
|
|
var DOM = __webpack_require__(7);
|
|
var Color = __webpack_require__(8);
|
|
var constants = __webpack_require__(9);
|
|
|
|
var svgRenderer = __webpack_require__(10);
|
|
|
|
var extend = utils.extend;
|
|
var dimensionCheck = utils.dimensionCheck;
|
|
|
|
//Constants and definitions
|
|
var SVG_NS = constants.svg_ns;
|
|
|
|
var Holder = {
|
|
version: constants.version,
|
|
|
|
/**
|
|
* Adds a theme to default settings
|
|
*
|
|
* @param {string} name Theme name
|
|
* @param {Object} theme Theme object, with foreground, background, size, font, and fontweight properties.
|
|
*/
|
|
addTheme: function(name, theme) {
|
|
name != null && theme != null && (App.settings.themes[name] = theme);
|
|
delete App.vars.cache.themeKeys;
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Appends a placeholder to an element
|
|
*
|
|
* @param {string} src Placeholder URL string
|
|
* @param el A selector or a reference to a DOM node
|
|
*/
|
|
addImage: function(src, el) {
|
|
//todo: use jquery fallback if available for all QSA references
|
|
var nodes = DOM.getNodeArray(el);
|
|
nodes.forEach(function (node) {
|
|
var img = DOM.newEl('img');
|
|
var domProps = {};
|
|
domProps[App.setup.dataAttr] = src;
|
|
DOM.setAttr(img, domProps);
|
|
node.appendChild(img);
|
|
});
|
|
return this;
|
|
},
|
|
|
|
/**
|
|
* Sets whether or not an image is updated on resize.
|
|
* If an image is set to be updated, it is immediately rendered.
|
|
*
|
|
* @param {Object} el Image DOM element
|
|
* @param {Boolean} value Resizable update flag value
|
|
*/
|
|
setResizeUpdate: function(el, value) {
|
|
if (el.holderData) {
|
|
el.holderData.resizeUpdate = !!value;
|
|
if (el.holderData.resizeUpdate) {
|
|
updateResizableElements(el);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Runs Holder with options. By default runs Holder on all images with "holder.js" in their source attributes.
|
|
*
|
|
* @param {Object} userOptions Options object, can contain domain, themes, images, and bgnodes properties
|
|
*/
|
|
run: function(userOptions) {
|
|
//todo: split processing into separate queues
|
|
userOptions = userOptions || {};
|
|
var engineSettings = {};
|
|
var options = extend(App.settings, userOptions);
|
|
|
|
App.vars.preempted = true;
|
|
App.vars.dataAttr = options.dataAttr || App.setup.dataAttr;
|
|
App.vars.lineWrapRatio = options.lineWrapRatio || App.setup.lineWrapRatio;
|
|
|
|
engineSettings.renderer = options.renderer ? options.renderer : App.setup.renderer;
|
|
if (App.setup.renderers.join(',').indexOf(engineSettings.renderer) === -1) {
|
|
engineSettings.renderer = App.setup.supportsSVG ? 'svg' : (App.setup.supportsCanvas ? 'canvas' : 'html');
|
|
}
|
|
|
|
var images = DOM.getNodeArray(options.images);
|
|
var bgnodes = DOM.getNodeArray(options.bgnodes);
|
|
var stylenodes = DOM.getNodeArray(options.stylenodes);
|
|
var objects = DOM.getNodeArray(options.objects);
|
|
|
|
engineSettings.stylesheets = [];
|
|
engineSettings.svgXMLStylesheet = true;
|
|
engineSettings.noFontFallback = options.noFontFallback ? options.noFontFallback : false;
|
|
|
|
stylenodes.forEach(function (styleNode) {
|
|
if (styleNode.attributes.rel && styleNode.attributes.href && styleNode.attributes.rel.value == 'stylesheet') {
|
|
var href = styleNode.attributes.href.value;
|
|
//todo: write isomorphic relative-to-absolute URL function
|
|
var proxyLink = DOM.newEl('a');
|
|
proxyLink.href = href;
|
|
var stylesheetURL = proxyLink.protocol + '//' + proxyLink.host + proxyLink.pathname + proxyLink.search;
|
|
engineSettings.stylesheets.push(stylesheetURL);
|
|
}
|
|
});
|
|
|
|
bgnodes.forEach(function (bgNode) {
|
|
//Skip processing background nodes if getComputedStyle is unavailable, since only modern browsers would be able to use canvas or SVG to render to background
|
|
if (!global.getComputedStyle) return;
|
|
var backgroundImage = global.getComputedStyle(bgNode, null).getPropertyValue('background-image');
|
|
var dataBackgroundImage = bgNode.getAttribute('data-background-src');
|
|
var rawURL = dataBackgroundImage || backgroundImage;
|
|
|
|
var holderURL = null;
|
|
var holderString = options.domain + '/';
|
|
var holderStringIndex = rawURL.indexOf(holderString);
|
|
|
|
if (holderStringIndex === 0) {
|
|
holderURL = rawURL;
|
|
} else if (holderStringIndex === 1 && rawURL[0] === '?') {
|
|
holderURL = rawURL.slice(1);
|
|
} else {
|
|
var fragment = rawURL.substr(holderStringIndex).match(/([^\"]*)"?\)/);
|
|
if (fragment !== null) {
|
|
holderURL = fragment[1];
|
|
} else if (rawURL.indexOf('url(') === 0) {
|
|
throw 'Holder: unable to parse background URL: ' + rawURL;
|
|
}
|
|
}
|
|
|
|
if (holderURL != null) {
|
|
var holderFlags = parseURL(holderURL, options);
|
|
if (holderFlags) {
|
|
prepareDOMElement({
|
|
mode: 'background',
|
|
el: bgNode,
|
|
flags: holderFlags,
|
|
engineSettings: engineSettings
|
|
});
|
|
}
|
|
}
|
|
});
|
|
|
|
objects.forEach(function (object) {
|
|
var objectAttr = {};
|
|
|
|
try {
|
|
objectAttr.data = object.getAttribute('data');
|
|
objectAttr.dataSrc = object.getAttribute(App.vars.dataAttr);
|
|
} catch (e) {}
|
|
|
|
var objectHasSrcURL = objectAttr.data != null && objectAttr.data.indexOf(options.domain) === 0;
|
|
var objectHasDataSrcURL = objectAttr.dataSrc != null && objectAttr.dataSrc.indexOf(options.domain) === 0;
|
|
|
|
if (objectHasSrcURL) {
|
|
prepareImageElement(options, engineSettings, objectAttr.data, object);
|
|
} else if (objectHasDataSrcURL) {
|
|
prepareImageElement(options, engineSettings, objectAttr.dataSrc, object);
|
|
}
|
|
});
|
|
|
|
images.forEach(function (image) {
|
|
var imageAttr = {};
|
|
|
|
try {
|
|
imageAttr.src = image.getAttribute('src');
|
|
imageAttr.dataSrc = image.getAttribute(App.vars.dataAttr);
|
|
imageAttr.rendered = image.getAttribute('data-holder-rendered');
|
|
} catch (e) {}
|
|
|
|
var imageHasSrc = imageAttr.src != null;
|
|
var imageHasDataSrcURL = imageAttr.dataSrc != null && imageAttr.dataSrc.indexOf(options.domain) === 0;
|
|
var imageRendered = imageAttr.rendered != null && imageAttr.rendered == 'true';
|
|
|
|
if (imageHasSrc) {
|
|
if (imageAttr.src.indexOf(options.domain) === 0) {
|
|
prepareImageElement(options, engineSettings, imageAttr.src, image);
|
|
} else if (imageHasDataSrcURL) {
|
|
//Image has a valid data-src and an invalid src
|
|
if (imageRendered) {
|
|
//If the placeholder has already been render, re-render it
|
|
prepareImageElement(options, engineSettings, imageAttr.dataSrc, image);
|
|
} else {
|
|
//If the placeholder has not been rendered, check if the image exists and render a fallback if it doesn't
|
|
(function(src, options, engineSettings, dataSrc, image) {
|
|
utils.imageExists(src, function(exists) {
|
|
if (!exists) {
|
|
prepareImageElement(options, engineSettings, dataSrc, image);
|
|
}
|
|
});
|
|
})(imageAttr.src, options, engineSettings, imageAttr.dataSrc, image);
|
|
}
|
|
}
|
|
} else if (imageHasDataSrcURL) {
|
|
prepareImageElement(options, engineSettings, imageAttr.dataSrc, image);
|
|
}
|
|
});
|
|
|
|
return this;
|
|
}
|
|
};
|
|
|
|
var App = {
|
|
settings: {
|
|
domain: 'holder.js',
|
|
images: 'img',
|
|
objects: 'object',
|
|
bgnodes: 'body .holderjs',
|
|
stylenodes: 'head link.holderjs',
|
|
themes: {
|
|
'gray': {
|
|
background: '#EEEEEE',
|
|
foreground: '#AAAAAA'
|
|
},
|
|
'social': {
|
|
background: '#3a5a97',
|
|
foreground: '#FFFFFF'
|
|
},
|
|
'industrial': {
|
|
background: '#434A52',
|
|
foreground: '#C2F200'
|
|
},
|
|
'sky': {
|
|
background: '#0D8FDB',
|
|
foreground: '#FFFFFF'
|
|
},
|
|
'vine': {
|
|
background: '#39DBAC',
|
|
foreground: '#1E292C'
|
|
},
|
|
'lava': {
|
|
background: '#F8591A',
|
|
foreground: '#1C2846'
|
|
}
|
|
}
|
|
},
|
|
defaults: {
|
|
size: 10,
|
|
units: 'pt',
|
|
scale: 1 / 16
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Processes provided source attribute and sets up the appropriate rendering workflow
|
|
*
|
|
* @private
|
|
* @param options Instance options from Holder.run
|
|
* @param renderSettings Instance configuration
|
|
* @param src Image URL
|
|
* @param el Image DOM element
|
|
*/
|
|
function prepareImageElement(options, engineSettings, src, el) {
|
|
var holderFlags = parseURL(src.substr(src.lastIndexOf(options.domain)), options);
|
|
if (holderFlags) {
|
|
prepareDOMElement({
|
|
mode: null,
|
|
el: el,
|
|
flags: holderFlags,
|
|
engineSettings: engineSettings
|
|
});
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Processes a Holder URL and extracts configuration from query string
|
|
*
|
|
* @private
|
|
* @param url URL
|
|
* @param instanceOptions Instance options from Holder.run
|
|
*/
|
|
function parseURL(url, instanceOptions) {
|
|
var holder = {
|
|
theme: extend(App.settings.themes.gray, null),
|
|
stylesheets: instanceOptions.stylesheets,
|
|
instanceOptions: instanceOptions
|
|
};
|
|
|
|
var parts = url.split('?');
|
|
var basics = parts[0].split('/');
|
|
|
|
holder.holderURL = url;
|
|
|
|
var dimensions = basics[1];
|
|
var dimensionData = dimensions.match(/([\d]+p?)x([\d]+p?)/);
|
|
|
|
if (!dimensionData) return false;
|
|
|
|
holder.fluid = dimensions.indexOf('p') !== -1;
|
|
|
|
holder.dimensions = {
|
|
width: dimensionData[1].replace('p', '%'),
|
|
height: dimensionData[2].replace('p', '%')
|
|
};
|
|
|
|
if (parts.length === 2) {
|
|
var options = querystring.parse(parts[1]);
|
|
|
|
// Colors
|
|
|
|
if (options.bg) {
|
|
holder.theme.background = utils.parseColor(options.bg);
|
|
}
|
|
|
|
if (options.fg) {
|
|
holder.theme.foreground = utils.parseColor(options.fg);
|
|
}
|
|
|
|
//todo: add automatic foreground to themes without foreground
|
|
if (options.bg && !options.fg) {
|
|
holder.autoFg = true;
|
|
}
|
|
|
|
if (options.theme && holder.instanceOptions.themes.hasOwnProperty(options.theme)) {
|
|
holder.theme = extend(holder.instanceOptions.themes[options.theme], null);
|
|
}
|
|
|
|
// Text
|
|
|
|
if (options.text) {
|
|
holder.text = options.text;
|
|
}
|
|
|
|
if (options.textmode) {
|
|
holder.textmode = options.textmode;
|
|
}
|
|
|
|
if (options.size) {
|
|
holder.size = options.size;
|
|
}
|
|
|
|
if (options.font) {
|
|
holder.font = options.font;
|
|
}
|
|
|
|
if (options.align) {
|
|
holder.align = options.align;
|
|
}
|
|
|
|
holder.nowrap = utils.truthy(options.nowrap);
|
|
|
|
// Miscellaneous
|
|
|
|
holder.auto = utils.truthy(options.auto);
|
|
|
|
holder.outline = utils.truthy(options.outline);
|
|
|
|
if (utils.truthy(options.random)) {
|
|
App.vars.cache.themeKeys = App.vars.cache.themeKeys || Object.keys(holder.instanceOptions.themes);
|
|
var _theme = App.vars.cache.themeKeys[0 | Math.random() * App.vars.cache.themeKeys.length];
|
|
holder.theme = extend(holder.instanceOptions.themes[_theme], null);
|
|
}
|
|
}
|
|
|
|
return holder;
|
|
}
|
|
|
|
/**
|
|
* Modifies the DOM to fit placeholders and sets up resizable image callbacks (for fluid and automatically sized placeholders)
|
|
*
|
|
* @private
|
|
* @param settings DOM prep settings
|
|
*/
|
|
function prepareDOMElement(prepSettings) {
|
|
var mode = prepSettings.mode;
|
|
var el = prepSettings.el;
|
|
var flags = prepSettings.flags;
|
|
var _engineSettings = prepSettings.engineSettings;
|
|
var dimensions = flags.dimensions,
|
|
theme = flags.theme;
|
|
var dimensionsCaption = dimensions.width + 'x' + dimensions.height;
|
|
mode = mode == null ? (flags.fluid ? 'fluid' : 'image') : mode;
|
|
|
|
if (flags.text != null) {
|
|
theme.text = flags.text;
|
|
|
|
//<object> SVG embedding doesn't parse Unicode properly
|
|
if (el.nodeName.toLowerCase() === 'object') {
|
|
var textLines = theme.text.split('\\n');
|
|
for (var k = 0; k < textLines.length; k++) {
|
|
textLines[k] = utils.encodeHtmlEntity(textLines[k]);
|
|
}
|
|
theme.text = textLines.join('\\n');
|
|
}
|
|
}
|
|
|
|
var holderURL = flags.holderURL;
|
|
var engineSettings = extend(_engineSettings, null);
|
|
|
|
if (flags.font) {
|
|
/*
|
|
If external fonts are used in a <img> placeholder rendered with SVG, Holder falls back to canvas.
|
|
|
|
This is done because Firefox and Chrome disallow embedded SVGs from referencing external assets.
|
|
The workaround is either to change the placeholder tag from <img> to <object> or to use the canvas renderer.
|
|
*/
|
|
theme.font = flags.font;
|
|
if (!engineSettings.noFontFallback && el.nodeName.toLowerCase() === 'img' && App.setup.supportsCanvas && engineSettings.renderer === 'svg') {
|
|
engineSettings = extend(engineSettings, {
|
|
renderer: 'canvas'
|
|
});
|
|
}
|
|
}
|
|
|
|
//Chrome and Opera require a quick 10ms re-render if web fonts are used with canvas
|
|
if (flags.font && engineSettings.renderer == 'canvas') {
|
|
engineSettings.reRender = true;
|
|
}
|
|
|
|
if (mode == 'background') {
|
|
if (el.getAttribute('data-background-src') == null) {
|
|
DOM.setAttr(el, {
|
|
'data-background-src': holderURL
|
|
});
|
|
}
|
|
} else {
|
|
var domProps = {};
|
|
domProps[App.vars.dataAttr] = holderURL;
|
|
DOM.setAttr(el, domProps);
|
|
}
|
|
|
|
flags.theme = theme;
|
|
|
|
//todo consider using all renderSettings in holderData
|
|
el.holderData = {
|
|
flags: flags,
|
|
engineSettings: engineSettings
|
|
};
|
|
|
|
if (mode == 'image' || mode == 'fluid') {
|
|
DOM.setAttr(el, {
|
|
'alt': (theme.text ? theme.text + ' [' + dimensionsCaption + ']' : dimensionsCaption)
|
|
});
|
|
}
|
|
|
|
var renderSettings = {
|
|
mode: mode,
|
|
el: el,
|
|
holderSettings: {
|
|
dimensions: dimensions,
|
|
theme: theme,
|
|
flags: flags
|
|
},
|
|
engineSettings: engineSettings
|
|
};
|
|
|
|
if (mode == 'image') {
|
|
if (!flags.auto) {
|
|
el.style.width = dimensions.width + 'px';
|
|
el.style.height = dimensions.height + 'px';
|
|
}
|
|
|
|
if (engineSettings.renderer == 'html') {
|
|
el.style.backgroundColor = theme.background;
|
|
} else {
|
|
render(renderSettings);
|
|
|
|
if (flags.textmode == 'exact') {
|
|
el.holderData.resizeUpdate = true;
|
|
App.vars.resizableImages.push(el);
|
|
updateResizableElements(el);
|
|
}
|
|
}
|
|
} else if (mode == 'background' && engineSettings.renderer != 'html') {
|
|
render(renderSettings);
|
|
} else if (mode == 'fluid') {
|
|
el.holderData.resizeUpdate = true;
|
|
|
|
if (dimensions.height.slice(-1) == '%') {
|
|
el.style.height = dimensions.height;
|
|
} else if (flags.auto == null || !flags.auto) {
|
|
el.style.height = dimensions.height + 'px';
|
|
}
|
|
if (dimensions.width.slice(-1) == '%') {
|
|
el.style.width = dimensions.width;
|
|
} else if (flags.auto == null || !flags.auto) {
|
|
el.style.width = dimensions.width + 'px';
|
|
}
|
|
if (el.style.display == 'inline' || el.style.display === '' || el.style.display == 'none') {
|
|
el.style.display = 'block';
|
|
}
|
|
|
|
setInitialDimensions(el);
|
|
|
|
if (engineSettings.renderer == 'html') {
|
|
el.style.backgroundColor = theme.background;
|
|
} else {
|
|
App.vars.resizableImages.push(el);
|
|
updateResizableElements(el);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Core function that takes output from renderers and sets it as the source or background-image of the target element
|
|
*
|
|
* @private
|
|
* @param renderSettings Renderer settings
|
|
*/
|
|
function render(renderSettings) {
|
|
var image = null;
|
|
var mode = renderSettings.mode;
|
|
var el = renderSettings.el;
|
|
var holderSettings = renderSettings.holderSettings;
|
|
var engineSettings = renderSettings.engineSettings;
|
|
|
|
switch (engineSettings.renderer) {
|
|
case 'svg':
|
|
if (!App.setup.supportsSVG) return;
|
|
break;
|
|
case 'canvas':
|
|
if (!App.setup.supportsCanvas) return;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
//todo: move generation of scene up to flag generation to reduce extra object creation
|
|
var scene = {
|
|
width: holderSettings.dimensions.width,
|
|
height: holderSettings.dimensions.height,
|
|
theme: holderSettings.theme,
|
|
flags: holderSettings.flags
|
|
};
|
|
|
|
var sceneGraph = buildSceneGraph(scene);
|
|
|
|
function getRenderedImage() {
|
|
var image = null;
|
|
switch (engineSettings.renderer) {
|
|
case 'canvas':
|
|
image = sgCanvasRenderer(sceneGraph, renderSettings);
|
|
break;
|
|
case 'svg':
|
|
image = svgRenderer(sceneGraph, renderSettings);
|
|
break;
|
|
default:
|
|
throw 'Holder: invalid renderer: ' + engineSettings.renderer;
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|
|
image = getRenderedImage();
|
|
|
|
if (image == null) {
|
|
throw 'Holder: couldn\'t render placeholder';
|
|
}
|
|
|
|
//todo: add <object> canvas rendering
|
|
if (mode == 'background') {
|
|
el.style.backgroundImage = 'url(' + image + ')';
|
|
el.style.backgroundSize = scene.width + 'px ' + scene.height + 'px';
|
|
} else {
|
|
if (el.nodeName.toLowerCase() === 'img') {
|
|
DOM.setAttr(el, {
|
|
'src': image
|
|
});
|
|
} else if (el.nodeName.toLowerCase() === 'object') {
|
|
DOM.setAttr(el, {
|
|
'data': image
|
|
});
|
|
DOM.setAttr(el, {
|
|
'type': 'image/svg+xml'
|
|
});
|
|
}
|
|
if (engineSettings.reRender) {
|
|
global.setTimeout(function () {
|
|
var image = getRenderedImage();
|
|
if (image == null) {
|
|
throw 'Holder: couldn\'t render placeholder';
|
|
}
|
|
//todo: refactor this code into a function
|
|
if (el.nodeName.toLowerCase() === 'img') {
|
|
DOM.setAttr(el, {
|
|
'src': image
|
|
});
|
|
} else if (el.nodeName.toLowerCase() === 'object') {
|
|
DOM.setAttr(el, {
|
|
'data': image
|
|
});
|
|
DOM.setAttr(el, {
|
|
'type': 'image/svg+xml'
|
|
});
|
|
}
|
|
}, 150);
|
|
}
|
|
}
|
|
//todo: account for re-rendering
|
|
DOM.setAttr(el, {
|
|
'data-holder-rendered': true
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Core function that takes a Holder scene description and builds a scene graph
|
|
*
|
|
* @private
|
|
* @param scene Holder scene object
|
|
*/
|
|
//todo: make this function reusable
|
|
//todo: merge app defaults and setup properties into the scene argument
|
|
function buildSceneGraph(scene) {
|
|
var fontSize = App.defaults.size;
|
|
if (parseFloat(scene.theme.size)) {
|
|
fontSize = scene.theme.size;
|
|
} else if (parseFloat(scene.flags.size)) {
|
|
fontSize = scene.flags.size;
|
|
}
|
|
|
|
scene.font = {
|
|
family: scene.theme.font ? scene.theme.font : 'Arial, Helvetica, Open Sans, sans-serif',
|
|
size: textSize(scene.width, scene.height, fontSize, App.defaults.scale),
|
|
units: scene.theme.units ? scene.theme.units : App.defaults.units,
|
|
weight: scene.theme.fontweight ? scene.theme.fontweight : 'bold'
|
|
};
|
|
|
|
scene.text = scene.theme.text || Math.floor(scene.width) + 'x' + Math.floor(scene.height);
|
|
|
|
scene.noWrap = scene.theme.nowrap || scene.flags.nowrap;
|
|
|
|
scene.align = scene.theme.align || scene.flags.align || 'center';
|
|
|
|
switch (scene.flags.textmode) {
|
|
case 'literal':
|
|
scene.text = scene.flags.dimensions.width + 'x' + scene.flags.dimensions.height;
|
|
break;
|
|
case 'exact':
|
|
if (!scene.flags.exactDimensions) break;
|
|
scene.text = Math.floor(scene.flags.exactDimensions.width) + 'x' + Math.floor(scene.flags.exactDimensions.height);
|
|
break;
|
|
}
|
|
|
|
var sceneGraph = new SceneGraph({
|
|
width: scene.width,
|
|
height: scene.height
|
|
});
|
|
|
|
var Shape = sceneGraph.Shape;
|
|
|
|
var holderBg = new Shape.Rect('holderBg', {
|
|
fill: scene.theme.background
|
|
});
|
|
|
|
holderBg.resize(scene.width, scene.height);
|
|
sceneGraph.root.add(holderBg);
|
|
|
|
if (scene.flags.outline) {
|
|
var outlineColor = new Color(holderBg.properties.fill);
|
|
outlineColor = outlineColor.lighten(outlineColor.lighterThan('7f7f7f') ? -0.1 : 0.1);
|
|
holderBg.properties.outline = {
|
|
fill: outlineColor.toHex(true),
|
|
width: 2
|
|
};
|
|
}
|
|
|
|
var holderTextColor = scene.theme.foreground;
|
|
|
|
if (scene.flags.autoFg) {
|
|
var holderBgColor = new Color(holderBg.properties.fill);
|
|
var lightColor = new Color('fff');
|
|
var darkColor = new Color('000', {
|
|
'alpha': 0.285714
|
|
});
|
|
|
|
holderTextColor = holderBgColor.blendAlpha(holderBgColor.lighterThan('7f7f7f') ? darkColor : lightColor).toHex(true);
|
|
}
|
|
|
|
var holderTextGroup = new Shape.Group('holderTextGroup', {
|
|
text: scene.text,
|
|
align: scene.align,
|
|
font: scene.font,
|
|
fill: holderTextColor
|
|
});
|
|
|
|
holderTextGroup.moveTo(null, null, 1);
|
|
sceneGraph.root.add(holderTextGroup);
|
|
|
|
var tpdata = holderTextGroup.textPositionData = stagingRenderer(sceneGraph);
|
|
if (!tpdata) {
|
|
throw 'Holder: staging fallback not supported yet.';
|
|
}
|
|
holderTextGroup.properties.leading = tpdata.boundingBox.height;
|
|
|
|
var textNode = null;
|
|
var line = null;
|
|
|
|
function finalizeLine(parent, line, width, height) {
|
|
line.width = width;
|
|
line.height = height;
|
|
parent.width = Math.max(parent.width, line.width);
|
|
parent.height += line.height;
|
|
}
|
|
|
|
var sceneMargin = scene.width * App.vars.lineWrapRatio;
|
|
var maxLineWidth = sceneMargin;
|
|
|
|
if (tpdata.lineCount > 1) {
|
|
var offsetX = 0;
|
|
var offsetY = 0;
|
|
var lineIndex = 0;
|
|
var lineKey;
|
|
line = new Shape.Group('line' + lineIndex);
|
|
|
|
//Double margin so that left/right-aligned next is not flush with edge of image
|
|
if (scene.align === 'left' || scene.align === 'right') {
|
|
maxLineWidth = scene.width * (1 - (1 - (App.vars.lineWrapRatio)) * 2);
|
|
}
|
|
|
|
for (var i = 0; i < tpdata.words.length; i++) {
|
|
var word = tpdata.words[i];
|
|
textNode = new Shape.Text(word.text);
|
|
var newline = word.text == '\\n';
|
|
if (!scene.noWrap && (offsetX + word.width >= maxLineWidth || newline === true)) {
|
|
finalizeLine(holderTextGroup, line, offsetX, holderTextGroup.properties.leading);
|
|
holderTextGroup.add(line);
|
|
offsetX = 0;
|
|
offsetY += holderTextGroup.properties.leading;
|
|
lineIndex += 1;
|
|
line = new Shape.Group('line' + lineIndex);
|
|
line.y = offsetY;
|
|
}
|
|
if (newline === true) {
|
|
continue;
|
|
}
|
|
textNode.moveTo(offsetX, 0);
|
|
offsetX += tpdata.spaceWidth + word.width;
|
|
line.add(textNode);
|
|
}
|
|
|
|
finalizeLine(holderTextGroup, line, offsetX, holderTextGroup.properties.leading);
|
|
holderTextGroup.add(line);
|
|
|
|
if (scene.align === 'left') {
|
|
holderTextGroup.moveTo(scene.width - sceneMargin, null, null);
|
|
} else if (scene.align === 'right') {
|
|
for (lineKey in holderTextGroup.children) {
|
|
line = holderTextGroup.children[lineKey];
|
|
line.moveTo(scene.width - line.width, null, null);
|
|
}
|
|
|
|
holderTextGroup.moveTo(0 - (scene.width - sceneMargin), null, null);
|
|
} else {
|
|
for (lineKey in holderTextGroup.children) {
|
|
line = holderTextGroup.children[lineKey];
|
|
line.moveTo((holderTextGroup.width - line.width) / 2, null, null);
|
|
}
|
|
|
|
holderTextGroup.moveTo((scene.width - holderTextGroup.width) / 2, null, null);
|
|
}
|
|
|
|
holderTextGroup.moveTo(null, (scene.height - holderTextGroup.height) / 2, null);
|
|
|
|
//If the text exceeds vertical space, move it down so the first line is visible
|
|
if ((scene.height - holderTextGroup.height) / 2 < 0) {
|
|
holderTextGroup.moveTo(null, 0, null);
|
|
}
|
|
} else {
|
|
textNode = new Shape.Text(scene.text);
|
|
line = new Shape.Group('line0');
|
|
line.add(textNode);
|
|
holderTextGroup.add(line);
|
|
|
|
if (scene.align === 'left') {
|
|
holderTextGroup.moveTo(scene.width - sceneMargin, null, null);
|
|
} else if (scene.align === 'right') {
|
|
holderTextGroup.moveTo(0 - (scene.width - sceneMargin), null, null);
|
|
} else {
|
|
holderTextGroup.moveTo((scene.width - tpdata.boundingBox.width) / 2, null, null);
|
|
}
|
|
|
|
holderTextGroup.moveTo(null, (scene.height - tpdata.boundingBox.height) / 2, null);
|
|
}
|
|
|
|
//todo: renderlist
|
|
return sceneGraph;
|
|
}
|
|
|
|
/**
|
|
* Adaptive text sizing function
|
|
*
|
|
* @private
|
|
* @param width Parent width
|
|
* @param height Parent height
|
|
* @param fontSize Requested text size
|
|
* @param scale Proportional scale of text
|
|
*/
|
|
function textSize(width, height, fontSize, scale) {
|
|
var stageWidth = parseInt(width, 10);
|
|
var stageHeight = parseInt(height, 10);
|
|
|
|
var bigSide = Math.max(stageWidth, stageHeight);
|
|
var smallSide = Math.min(stageWidth, stageHeight);
|
|
|
|
var newHeight = 0.8 * Math.min(smallSide, bigSide * scale);
|
|
return Math.round(Math.max(fontSize, newHeight));
|
|
}
|
|
|
|
/**
|
|
* Iterates over resizable (fluid or auto) placeholders and renders them
|
|
*
|
|
* @private
|
|
* @param element Optional element selector, specified only if a specific element needs to be re-rendered
|
|
*/
|
|
function updateResizableElements(element) {
|
|
var images;
|
|
if (element == null || element.nodeType == null) {
|
|
images = App.vars.resizableImages;
|
|
} else {
|
|
images = [element];
|
|
}
|
|
for (var i = 0, l = images.length; i < l; i++) {
|
|
var el = images[i];
|
|
if (el.holderData) {
|
|
var flags = el.holderData.flags;
|
|
var dimensions = dimensionCheck(el);
|
|
if (dimensions) {
|
|
if (!el.holderData.resizeUpdate) {
|
|
continue;
|
|
}
|
|
|
|
if (flags.fluid && flags.auto) {
|
|
var fluidConfig = el.holderData.fluidConfig;
|
|
switch (fluidConfig.mode) {
|
|
case 'width':
|
|
dimensions.height = dimensions.width / fluidConfig.ratio;
|
|
break;
|
|
case 'height':
|
|
dimensions.width = dimensions.height * fluidConfig.ratio;
|
|
break;
|
|
}
|
|
}
|
|
|
|
var settings = {
|
|
mode: 'image',
|
|
holderSettings: {
|
|
dimensions: dimensions,
|
|
theme: flags.theme,
|
|
flags: flags
|
|
},
|
|
el: el,
|
|
engineSettings: el.holderData.engineSettings
|
|
};
|
|
|
|
if (flags.textmode == 'exact') {
|
|
flags.exactDimensions = dimensions;
|
|
settings.holderSettings.dimensions = flags.dimensions;
|
|
}
|
|
|
|
render(settings);
|
|
} else {
|
|
setInvisible(el);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets up aspect ratio metadata for fluid placeholders, in order to preserve proportions when resizing
|
|
*
|
|
* @private
|
|
* @param el Image DOM element
|
|
*/
|
|
function setInitialDimensions(el) {
|
|
if (el.holderData) {
|
|
var dimensions = dimensionCheck(el);
|
|
if (dimensions) {
|
|
var flags = el.holderData.flags;
|
|
|
|
var fluidConfig = {
|
|
fluidHeight: flags.dimensions.height.slice(-1) == '%',
|
|
fluidWidth: flags.dimensions.width.slice(-1) == '%',
|
|
mode: null,
|
|
initialDimensions: dimensions
|
|
};
|
|
|
|
if (fluidConfig.fluidWidth && !fluidConfig.fluidHeight) {
|
|
fluidConfig.mode = 'width';
|
|
fluidConfig.ratio = fluidConfig.initialDimensions.width / parseFloat(flags.dimensions.height);
|
|
} else if (!fluidConfig.fluidWidth && fluidConfig.fluidHeight) {
|
|
fluidConfig.mode = 'height';
|
|
fluidConfig.ratio = parseFloat(flags.dimensions.width) / fluidConfig.initialDimensions.height;
|
|
}
|
|
|
|
el.holderData.fluidConfig = fluidConfig;
|
|
} else {
|
|
setInvisible(el);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Iterates through all current invisible images, and if they're visible, renders them and removes them from further checks. Runs every animation frame.
|
|
*
|
|
* @private
|
|
*/
|
|
function visibilityCheck() {
|
|
var renderableImages = [];
|
|
var keys = Object.keys(App.vars.invisibleImages);
|
|
var el;
|
|
|
|
keys.forEach(function (key) {
|
|
el = App.vars.invisibleImages[key];
|
|
if (dimensionCheck(el) && el.nodeName.toLowerCase() == 'img') {
|
|
renderableImages.push(el);
|
|
delete App.vars.invisibleImages[key];
|
|
}
|
|
});
|
|
|
|
if (renderableImages.length) {
|
|
Holder.run({
|
|
images: renderableImages
|
|
});
|
|
}
|
|
|
|
// Done to prevent 100% CPU usage via aggressive calling of requestAnimationFrame
|
|
setTimeout(function () {
|
|
global.requestAnimationFrame(visibilityCheck);
|
|
}, 10);
|
|
}
|
|
|
|
/**
|
|
* Starts checking for invisible placeholders if not doing so yet. Does nothing otherwise.
|
|
*
|
|
* @private
|
|
*/
|
|
function startVisibilityCheck() {
|
|
if (!App.vars.visibilityCheckStarted) {
|
|
global.requestAnimationFrame(visibilityCheck);
|
|
App.vars.visibilityCheckStarted = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets a unique ID for an image detected to be invisible and adds it to the map of invisible images checked by visibilityCheck
|
|
*
|
|
* @private
|
|
* @param el Invisible DOM element
|
|
*/
|
|
function setInvisible(el) {
|
|
if (!el.holderData.invisibleId) {
|
|
App.vars.invisibleId += 1;
|
|
App.vars.invisibleImages['i' + App.vars.invisibleId] = el;
|
|
el.holderData.invisibleId = App.vars.invisibleId;
|
|
}
|
|
}
|
|
|
|
//todo: see if possible to convert stagingRenderer to use HTML only
|
|
var stagingRenderer = (function() {
|
|
var svg = null,
|
|
stagingText = null,
|
|
stagingTextNode = null;
|
|
return function(graph) {
|
|
var rootNode = graph.root;
|
|
if (App.setup.supportsSVG) {
|
|
var firstTimeSetup = false;
|
|
var tnode = function(text) {
|
|
return document.createTextNode(text);
|
|
};
|
|
if (svg == null || svg.parentNode !== document.body) {
|
|
firstTimeSetup = true;
|
|
}
|
|
|
|
svg = SVG.initSVG(svg, rootNode.properties.width, rootNode.properties.height);
|
|
//Show staging element before staging
|
|
svg.style.display = 'block';
|
|
|
|
if (firstTimeSetup) {
|
|
stagingText = DOM.newEl('text', SVG_NS);
|
|
stagingTextNode = tnode(null);
|
|
DOM.setAttr(stagingText, {
|
|
x: 0
|
|
});
|
|
stagingText.appendChild(stagingTextNode);
|
|
svg.appendChild(stagingText);
|
|
document.body.appendChild(svg);
|
|
svg.style.visibility = 'hidden';
|
|
svg.style.position = 'absolute';
|
|
svg.style.top = '-100%';
|
|
svg.style.left = '-100%';
|
|
//todo: workaround for zero-dimension <svg> tag in Opera 12
|
|
//svg.setAttribute('width', 0);
|
|
//svg.setAttribute('height', 0);
|
|
}
|
|
|
|
var holderTextGroup = rootNode.children.holderTextGroup;
|
|
var htgProps = holderTextGroup.properties;
|
|
DOM.setAttr(stagingText, {
|
|
'y': htgProps.font.size,
|
|
'style': utils.cssProps({
|
|
'font-weight': htgProps.font.weight,
|
|
'font-size': htgProps.font.size + htgProps.font.units,
|
|
'font-family': htgProps.font.family
|
|
})
|
|
});
|
|
|
|
//Get bounding box for the whole string (total width and height)
|
|
stagingTextNode.nodeValue = htgProps.text;
|
|
var stagingTextBBox = stagingText.getBBox();
|
|
|
|
//Get line count and split the string into words
|
|
var lineCount = Math.ceil(stagingTextBBox.width / (rootNode.properties.width * App.vars.lineWrapRatio));
|
|
var words = htgProps.text.split(' ');
|
|
var newlines = htgProps.text.match(/\\n/g);
|
|
lineCount += newlines == null ? 0 : newlines.length;
|
|
|
|
//Get bounding box for the string with spaces removed
|
|
stagingTextNode.nodeValue = htgProps.text.replace(/[ ]+/g, '');
|
|
var computedNoSpaceLength = stagingText.getComputedTextLength();
|
|
|
|
//Compute average space width
|
|
var diffLength = stagingTextBBox.width - computedNoSpaceLength;
|
|
var spaceWidth = Math.round(diffLength / Math.max(1, words.length - 1));
|
|
|
|
//Get widths for every word with space only if there is more than one line
|
|
var wordWidths = [];
|
|
if (lineCount > 1) {
|
|
stagingTextNode.nodeValue = '';
|
|
for (var i = 0; i < words.length; i++) {
|
|
if (words[i].length === 0) continue;
|
|
stagingTextNode.nodeValue = utils.decodeHtmlEntity(words[i]);
|
|
var bbox = stagingText.getBBox();
|
|
wordWidths.push({
|
|
text: words[i],
|
|
width: bbox.width
|
|
});
|
|
}
|
|
}
|
|
|
|
//Hide staging element after staging
|
|
svg.style.display = 'none';
|
|
|
|
return {
|
|
spaceWidth: spaceWidth,
|
|
lineCount: lineCount,
|
|
boundingBox: stagingTextBBox,
|
|
words: wordWidths
|
|
};
|
|
} else {
|
|
//todo: canvas fallback for measuring text on android 2.3
|
|
return false;
|
|
}
|
|
};
|
|
})();
|
|
|
|
var sgCanvasRenderer = (function() {
|
|
var canvas = DOM.newEl('canvas');
|
|
var ctx = null;
|
|
|
|
return function(sceneGraph) {
|
|
if (ctx == null) {
|
|
ctx = canvas.getContext('2d');
|
|
}
|
|
var root = sceneGraph.root;
|
|
canvas.width = App.dpr(root.properties.width);
|
|
canvas.height = App.dpr(root.properties.height);
|
|
ctx.textBaseline = 'middle';
|
|
|
|
var bg = root.children.holderBg;
|
|
var bgWidth = App.dpr(bg.width);
|
|
var bgHeight = App.dpr(bg.height);
|
|
//todo: parametrize outline width (e.g. in scene object)
|
|
var outlineWidth = 2;
|
|
var outlineOffsetWidth = outlineWidth / 2;
|
|
|
|
ctx.fillStyle = bg.properties.fill;
|
|
ctx.fillRect(0, 0, bgWidth, bgHeight);
|
|
|
|
if (bg.properties.outline) {
|
|
//todo: abstract this into a method
|
|
ctx.strokeStyle = bg.properties.outline.fill;
|
|
ctx.lineWidth = bg.properties.outline.width;
|
|
ctx.moveTo(outlineOffsetWidth, outlineOffsetWidth);
|
|
// TL, TR, BR, BL
|
|
ctx.lineTo(bgWidth - outlineOffsetWidth, outlineOffsetWidth);
|
|
ctx.lineTo(bgWidth - outlineOffsetWidth, bgHeight - outlineOffsetWidth);
|
|
ctx.lineTo(outlineOffsetWidth, bgHeight - outlineOffsetWidth);
|
|
ctx.lineTo(outlineOffsetWidth, outlineOffsetWidth);
|
|
// Diagonals
|
|
ctx.moveTo(0, outlineOffsetWidth);
|
|
ctx.lineTo(bgWidth, bgHeight - outlineOffsetWidth);
|
|
ctx.moveTo(0, bgHeight - outlineOffsetWidth);
|
|
ctx.lineTo(bgWidth, outlineOffsetWidth);
|
|
ctx.stroke();
|
|
}
|
|
|
|
var textGroup = root.children.holderTextGroup;
|
|
ctx.font = textGroup.properties.font.weight + ' ' + App.dpr(textGroup.properties.font.size) + textGroup.properties.font.units + ' ' + textGroup.properties.font.family + ', monospace';
|
|
ctx.fillStyle = textGroup.properties.fill;
|
|
|
|
for (var lineKey in textGroup.children) {
|
|
var line = textGroup.children[lineKey];
|
|
for (var wordKey in line.children) {
|
|
var word = line.children[wordKey];
|
|
var x = App.dpr(textGroup.x + line.x + word.x);
|
|
var y = App.dpr(textGroup.y + line.y + word.y + (textGroup.properties.leading / 2));
|
|
|
|
ctx.fillText(word.properties.text, x, y);
|
|
}
|
|
}
|
|
|
|
return canvas.toDataURL('image/png');
|
|
};
|
|
})();
|
|
|
|
//Helpers
|
|
|
|
/**
|
|
* Prevents a function from being called too often, waits until a timer elapses to call it again
|
|
*
|
|
* @param fn Function to call
|
|
*/
|
|
function debounce(fn) {
|
|
if (!App.vars.debounceTimer) fn.call(this);
|
|
if (App.vars.debounceTimer) global.clearTimeout(App.vars.debounceTimer);
|
|
App.vars.debounceTimer = global.setTimeout(function() {
|
|
App.vars.debounceTimer = null;
|
|
fn.call(this);
|
|
}, App.setup.debounce);
|
|
}
|
|
|
|
/**
|
|
* Holder-specific resize/orientation change callback, debounced to prevent excessive execution
|
|
*/
|
|
function resizeEvent() {
|
|
debounce(function() {
|
|
updateResizableElements(null);
|
|
});
|
|
}
|
|
|
|
//Set up flags
|
|
|
|
for (var flag in App.flags) {
|
|
if (!App.flags.hasOwnProperty(flag)) continue;
|
|
App.flags[flag].match = function(val) {
|
|
return val.match(this.regex);
|
|
};
|
|
}
|
|
|
|
//Properties set once on setup
|
|
|
|
App.setup = {
|
|
renderer: 'html',
|
|
debounce: 100,
|
|
ratio: 1,
|
|
supportsCanvas: false,
|
|
supportsSVG: false,
|
|
lineWrapRatio: 0.9,
|
|
dataAttr: 'data-src',
|
|
renderers: ['html', 'canvas', 'svg']
|
|
};
|
|
|
|
App.dpr = function(val) {
|
|
return val * App.setup.ratio;
|
|
};
|
|
|
|
//Properties modified during runtime
|
|
|
|
App.vars = {
|
|
preempted: false,
|
|
resizableImages: [],
|
|
invisibleImages: {},
|
|
invisibleId: 0,
|
|
visibilityCheckStarted: false,
|
|
debounceTimer: null,
|
|
cache: {}
|
|
};
|
|
|
|
//Pre-flight
|
|
|
|
(function() {
|
|
var devicePixelRatio = 1,
|
|
backingStoreRatio = 1;
|
|
|
|
var canvas = DOM.newEl('canvas');
|
|
var ctx = null;
|
|
|
|
if (canvas.getContext) {
|
|
if (canvas.toDataURL('image/png').indexOf('data:image/png') != -1) {
|
|
App.setup.renderer = 'canvas';
|
|
ctx = canvas.getContext('2d');
|
|
App.setup.supportsCanvas = true;
|
|
}
|
|
}
|
|
|
|
if (App.setup.supportsCanvas) {
|
|
devicePixelRatio = global.devicePixelRatio || 1;
|
|
backingStoreRatio = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
|
|
}
|
|
|
|
App.setup.ratio = devicePixelRatio / backingStoreRatio;
|
|
|
|
if (!!document.createElementNS && !!document.createElementNS(SVG_NS, 'svg').createSVGRect) {
|
|
App.setup.renderer = 'svg';
|
|
App.setup.supportsSVG = true;
|
|
}
|
|
})();
|
|
|
|
//Starts checking for invisible placeholders
|
|
startVisibilityCheck();
|
|
|
|
if (onDomReady) {
|
|
onDomReady(function() {
|
|
if (!App.vars.preempted) {
|
|
Holder.run();
|
|
}
|
|
if (global.addEventListener) {
|
|
global.addEventListener('resize', resizeEvent, false);
|
|
global.addEventListener('orientationchange', resizeEvent, false);
|
|
} else {
|
|
global.attachEvent('onresize', resizeEvent);
|
|
}
|
|
|
|
if (typeof global.Turbolinks == 'object') {
|
|
global.document.addEventListener('page:change', function() {
|
|
Holder.run();
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
module.exports = Holder;
|
|
|
|
/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
|
|
|
|
/***/ },
|
|
/* 2 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/*!
|
|
* onDomReady.js 1.4.0 (c) 2013 Tubal Martin - MIT license
|
|
*
|
|
* Specially modified to work with Holder.js
|
|
*/
|
|
|
|
function _onDomReady(win) {
|
|
//Lazy loading fix for Firefox < 3.6
|
|
//http://webreflection.blogspot.com/2009/11/195-chars-to-help-lazy-loading.html
|
|
if (document.readyState == null && document.addEventListener) {
|
|
document.addEventListener("DOMContentLoaded", function DOMContentLoaded() {
|
|
document.removeEventListener("DOMContentLoaded", DOMContentLoaded, false);
|
|
document.readyState = "complete";
|
|
}, false);
|
|
document.readyState = "loading";
|
|
}
|
|
|
|
var doc = win.document,
|
|
docElem = doc.documentElement,
|
|
|
|
LOAD = "load",
|
|
FALSE = false,
|
|
ONLOAD = "on"+LOAD,
|
|
COMPLETE = "complete",
|
|
READYSTATE = "readyState",
|
|
ATTACHEVENT = "attachEvent",
|
|
DETACHEVENT = "detachEvent",
|
|
ADDEVENTLISTENER = "addEventListener",
|
|
DOMCONTENTLOADED = "DOMContentLoaded",
|
|
ONREADYSTATECHANGE = "onreadystatechange",
|
|
REMOVEEVENTLISTENER = "removeEventListener",
|
|
|
|
// W3C Event model
|
|
w3c = ADDEVENTLISTENER in doc,
|
|
_top = FALSE,
|
|
|
|
// isReady: Is the DOM ready to be used? Set to true once it occurs.
|
|
isReady = FALSE,
|
|
|
|
// Callbacks pending execution until DOM is ready
|
|
callbacks = [];
|
|
|
|
// Handle when the DOM is ready
|
|
function ready( fn ) {
|
|
if ( !isReady ) {
|
|
|
|
// Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443).
|
|
if ( !doc.body ) {
|
|
return defer( ready );
|
|
}
|
|
|
|
// Remember that the DOM is ready
|
|
isReady = true;
|
|
|
|
// Execute all callbacks
|
|
while ( fn = callbacks.shift() ) {
|
|
defer( fn );
|
|
}
|
|
}
|
|
}
|
|
|
|
// The ready event handler
|
|
function completed( event ) {
|
|
// readyState === "complete" is good enough for us to call the dom ready in oldIE
|
|
if ( w3c || event.type === LOAD || doc[READYSTATE] === COMPLETE ) {
|
|
detach();
|
|
ready();
|
|
}
|
|
}
|
|
|
|
// Clean-up method for dom ready events
|
|
function detach() {
|
|
if ( w3c ) {
|
|
doc[REMOVEEVENTLISTENER]( DOMCONTENTLOADED, completed, FALSE );
|
|
win[REMOVEEVENTLISTENER]( LOAD, completed, FALSE );
|
|
} else {
|
|
doc[DETACHEVENT]( ONREADYSTATECHANGE, completed );
|
|
win[DETACHEVENT]( ONLOAD, completed );
|
|
}
|
|
}
|
|
|
|
// Defers a function, scheduling it to run after the current call stack has cleared.
|
|
function defer( fn, wait ) {
|
|
// Allow 0 to be passed
|
|
setTimeout( fn, +wait >= 0 ? wait : 1 );
|
|
}
|
|
|
|
// Attach the listeners:
|
|
|
|
// Catch cases where onDomReady is called after the browser event has already occurred.
|
|
// we once tried to use readyState "interactive" here, but it caused issues like the one
|
|
// discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15
|
|
if ( doc[READYSTATE] === COMPLETE ) {
|
|
// Handle it asynchronously to allow scripts the opportunity to delay ready
|
|
defer( ready );
|
|
|
|
// Standards-based browsers support DOMContentLoaded
|
|
} else if ( w3c ) {
|
|
// Use the handy event callback
|
|
doc[ADDEVENTLISTENER]( DOMCONTENTLOADED, completed, FALSE );
|
|
|
|
// A fallback to window.onload, that will always work
|
|
win[ADDEVENTLISTENER]( LOAD, completed, FALSE );
|
|
|
|
// If IE event model is used
|
|
} else {
|
|
// Ensure firing before onload, maybe late but safe also for iframes
|
|
doc[ATTACHEVENT]( ONREADYSTATECHANGE, completed );
|
|
|
|
// A fallback to window.onload, that will always work
|
|
win[ATTACHEVENT]( ONLOAD, completed );
|
|
|
|
// If IE and not a frame
|
|
// continually check to see if the document is ready
|
|
try {
|
|
_top = win.frameElement == null && docElem;
|
|
} catch(e) {}
|
|
|
|
if ( _top && _top.doScroll ) {
|
|
(function doScrollCheck() {
|
|
if ( !isReady ) {
|
|
try {
|
|
// Use the trick by Diego Perini
|
|
// http://javascript.nwbox.com/IEContentLoaded/
|
|
_top.doScroll("left");
|
|
} catch(e) {
|
|
return defer( doScrollCheck, 50 );
|
|
}
|
|
|
|
// detach all dom ready events
|
|
detach();
|
|
|
|
// and execute any waiting functions
|
|
ready();
|
|
}
|
|
})();
|
|
}
|
|
}
|
|
|
|
function onDomReady( fn ) {
|
|
// If DOM is ready, execute the function (async), otherwise wait
|
|
isReady ? defer( fn ) : callbacks.push( fn );
|
|
}
|
|
|
|
// Add version
|
|
onDomReady.version = "1.4.0";
|
|
// Add method to check if DOM is ready
|
|
onDomReady.isReady = function(){
|
|
return isReady;
|
|
};
|
|
|
|
return onDomReady;
|
|
}
|
|
|
|
module.exports = typeof window !== "undefined" && _onDomReady(window);
|
|
|
|
/***/ },
|
|
/* 3 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
//Modified version of component/querystring
|
|
//Changes: updated dependencies, dot notation parsing, JSHint fixes
|
|
//Fork at https://github.com/imsky/querystring
|
|
|
|
/**
|
|
* Module dependencies.
|
|
*/
|
|
|
|
var encode = encodeURIComponent;
|
|
var decode = decodeURIComponent;
|
|
var trim = __webpack_require__(11);
|
|
var type = __webpack_require__(12);
|
|
|
|
var arrayRegex = /(\w+)\[(\d+)\]/;
|
|
var objectRegex = /\w+\.\w+/;
|
|
|
|
/**
|
|
* Parse the given query `str`.
|
|
*
|
|
* @param {String} str
|
|
* @return {Object}
|
|
* @api public
|
|
*/
|
|
|
|
exports.parse = function(str){
|
|
if ('string' !== typeof str) return {};
|
|
|
|
str = trim(str);
|
|
if ('' === str) return {};
|
|
if ('?' === str.charAt(0)) str = str.slice(1);
|
|
|
|
var obj = {};
|
|
var pairs = str.split('&');
|
|
for (var i = 0; i < pairs.length; i++) {
|
|
var parts = pairs[i].split('=');
|
|
var key = decode(parts[0]);
|
|
var m, ctx, prop;
|
|
|
|
if (m = arrayRegex.exec(key)) {
|
|
obj[m[1]] = obj[m[1]] || [];
|
|
obj[m[1]][m[2]] = decode(parts[1]);
|
|
continue;
|
|
}
|
|
|
|
if (m = objectRegex.test(key)) {
|
|
m = key.split('.');
|
|
ctx = obj;
|
|
|
|
while (m.length) {
|
|
prop = m.shift();
|
|
|
|
if (!prop.length) continue;
|
|
|
|
if (!ctx[prop]) {
|
|
ctx[prop] = {};
|
|
} else if (ctx[prop] && typeof ctx[prop] !== 'object') {
|
|
break;
|
|
}
|
|
|
|
if (!m.length) {
|
|
ctx[prop] = decode(parts[1]);
|
|
}
|
|
|
|
ctx = ctx[prop];
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
obj[parts[0]] = null == parts[1] ? '' : decode(parts[1]);
|
|
}
|
|
|
|
return obj;
|
|
};
|
|
|
|
/**
|
|
* Stringify the given `obj`.
|
|
*
|
|
* @param {Object} obj
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
exports.stringify = function(obj){
|
|
if (!obj) return '';
|
|
var pairs = [];
|
|
|
|
for (var key in obj) {
|
|
var value = obj[key];
|
|
|
|
if ('array' == type(value)) {
|
|
for (var i = 0; i < value.length; ++i) {
|
|
pairs.push(encode(key + '[' + i + ']') + '=' + encode(value[i]));
|
|
}
|
|
continue;
|
|
}
|
|
|
|
pairs.push(encode(key) + '=' + encode(obj[key]));
|
|
}
|
|
|
|
return pairs.join('&');
|
|
};
|
|
|
|
|
|
/***/ },
|
|
/* 4 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
var SceneGraph = function(sceneProperties) {
|
|
var nodeCount = 1;
|
|
|
|
//todo: move merge to helpers section
|
|
function merge(parent, child) {
|
|
for (var prop in child) {
|
|
parent[prop] = child[prop];
|
|
}
|
|
return parent;
|
|
}
|
|
|
|
var SceneNode = function(name) {
|
|
nodeCount++;
|
|
this.parent = null;
|
|
this.children = {};
|
|
this.id = nodeCount;
|
|
this.name = 'n' + nodeCount;
|
|
if (typeof name !== 'undefined') {
|
|
this.name = name;
|
|
}
|
|
this.x = this.y = this.z = 0;
|
|
this.width = this.height = 0;
|
|
};
|
|
|
|
SceneNode.prototype.resize = function(width, height) {
|
|
if (width != null) {
|
|
this.width = width;
|
|
}
|
|
if (height != null) {
|
|
this.height = height;
|
|
}
|
|
};
|
|
|
|
SceneNode.prototype.moveTo = function(x, y, z) {
|
|
this.x = x != null ? x : this.x;
|
|
this.y = y != null ? y : this.y;
|
|
this.z = z != null ? z : this.z;
|
|
};
|
|
|
|
SceneNode.prototype.add = function(child) {
|
|
var name = child.name;
|
|
if (typeof this.children[name] === 'undefined') {
|
|
this.children[name] = child;
|
|
child.parent = this;
|
|
} else {
|
|
throw 'SceneGraph: child already exists: ' + name;
|
|
}
|
|
};
|
|
|
|
var RootNode = function() {
|
|
SceneNode.call(this, 'root');
|
|
this.properties = sceneProperties;
|
|
};
|
|
|
|
RootNode.prototype = new SceneNode();
|
|
|
|
var Shape = function(name, props) {
|
|
SceneNode.call(this, name);
|
|
this.properties = {
|
|
'fill': '#000000'
|
|
};
|
|
if (typeof props !== 'undefined') {
|
|
merge(this.properties, props);
|
|
} else if (typeof name !== 'undefined' && typeof name !== 'string') {
|
|
throw 'SceneGraph: invalid node name';
|
|
}
|
|
};
|
|
|
|
Shape.prototype = new SceneNode();
|
|
|
|
var Group = function() {
|
|
Shape.apply(this, arguments);
|
|
this.type = 'group';
|
|
};
|
|
|
|
Group.prototype = new Shape();
|
|
|
|
var Rect = function() {
|
|
Shape.apply(this, arguments);
|
|
this.type = 'rect';
|
|
};
|
|
|
|
Rect.prototype = new Shape();
|
|
|
|
var Text = function(text) {
|
|
Shape.call(this);
|
|
this.type = 'text';
|
|
this.properties.text = text;
|
|
};
|
|
|
|
Text.prototype = new Shape();
|
|
|
|
var root = new RootNode();
|
|
|
|
this.Shape = {
|
|
'Rect': Rect,
|
|
'Text': Text,
|
|
'Group': Group
|
|
};
|
|
|
|
this.root = root;
|
|
return this;
|
|
};
|
|
|
|
module.exports = SceneGraph;
|
|
|
|
|
|
/***/ },
|
|
/* 5 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/**
|
|
* Shallow object clone and merge
|
|
*
|
|
* @param a Object A
|
|
* @param b Object B
|
|
* @returns {Object} New object with all of A's properties, and all of B's properties, overwriting A's properties
|
|
*/
|
|
exports.extend = function(a, b) {
|
|
var c = {};
|
|
for (var x in a) {
|
|
if (a.hasOwnProperty(x)) {
|
|
c[x] = a[x];
|
|
}
|
|
}
|
|
if (b != null) {
|
|
for (var y in b) {
|
|
if (b.hasOwnProperty(y)) {
|
|
c[y] = b[y];
|
|
}
|
|
}
|
|
}
|
|
return c;
|
|
};
|
|
|
|
/**
|
|
* Takes a k/v list of CSS properties and returns a rule
|
|
*
|
|
* @param props CSS properties object
|
|
*/
|
|
exports.cssProps = function(props) {
|
|
var ret = [];
|
|
for (var p in props) {
|
|
if (props.hasOwnProperty(p)) {
|
|
ret.push(p + ':' + props[p]);
|
|
}
|
|
}
|
|
return ret.join(';');
|
|
};
|
|
|
|
/**
|
|
* Encodes HTML entities in a string
|
|
*
|
|
* @param str Input string
|
|
*/
|
|
exports.encodeHtmlEntity = function(str) {
|
|
var buf = [];
|
|
var charCode = 0;
|
|
for (var i = str.length - 1; i >= 0; i--) {
|
|
charCode = str.charCodeAt(i);
|
|
if (charCode > 128) {
|
|
buf.unshift(['&#', charCode, ';'].join(''));
|
|
} else {
|
|
buf.unshift(str[i]);
|
|
}
|
|
}
|
|
return buf.join('');
|
|
};
|
|
|
|
/**
|
|
* Checks if an image exists
|
|
*
|
|
* @param src URL of image
|
|
* @param callback Callback to call once image status has been found
|
|
*/
|
|
exports.imageExists = function(src, callback) {
|
|
var image = new Image();
|
|
image.onerror = function() {
|
|
callback.call(this, false);
|
|
};
|
|
image.onload = function() {
|
|
callback.call(this, true);
|
|
};
|
|
image.src = src;
|
|
};
|
|
|
|
/**
|
|
* Decodes HTML entities in a string
|
|
*
|
|
* @param str Input string
|
|
*/
|
|
exports.decodeHtmlEntity = function(str) {
|
|
return str.replace(/&#(\d+);/g, function(match, dec) {
|
|
return String.fromCharCode(dec);
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns an element's dimensions if it's visible, `false` otherwise.
|
|
*
|
|
* @param el DOM element
|
|
*/
|
|
exports.dimensionCheck = function(el) {
|
|
var dimensions = {
|
|
height: el.clientHeight,
|
|
width: el.clientWidth
|
|
};
|
|
|
|
if (dimensions.height && dimensions.width) {
|
|
return dimensions;
|
|
} else {
|
|
return false;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns true if value is truthy or if it is "semantically truthy"
|
|
* @param val
|
|
*/
|
|
exports.truthy = function(val) {
|
|
if (typeof val === 'string') {
|
|
return val === 'true' || val === 'yes' || val === '1' || val === 'on' || val === '✓';
|
|
}
|
|
return !!val;
|
|
};
|
|
|
|
/**
|
|
* Parses input into a well-formed CSS color
|
|
* @param val
|
|
*/
|
|
exports.parseColor = function(val) {
|
|
var hexre = /(^(?:#?)[0-9a-f]{6}$)|(^(?:#?)[0-9a-f]{3}$)/i;
|
|
var rgbre = /^rgb\((\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*\)$/;
|
|
var rgbare = /^rgba\((\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(\d{1,3})\s*,\s*(0\.\d{1,}|1)\)$/;
|
|
|
|
var match = val.match(hexre);
|
|
var retval;
|
|
|
|
if (match !== null) {
|
|
retval = match[1] || match[2];
|
|
if (retval[0] !== '#') {
|
|
return '#' + retval;
|
|
} else {
|
|
return retval;
|
|
}
|
|
}
|
|
|
|
match = val.match(rgbre);
|
|
|
|
if (match !== null) {
|
|
retval = 'rgb(' + match.slice(1).join(',') + ')';
|
|
return retval;
|
|
}
|
|
|
|
match = val.match(rgbare);
|
|
|
|
if (match !== null) {
|
|
retval = 'rgba(' + match.slice(1).join(',') + ')';
|
|
return retval;
|
|
}
|
|
|
|
return null;
|
|
};
|
|
|
|
/***/ },
|
|
/* 6 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/* WEBPACK VAR INJECTION */(function(global) {var DOM = __webpack_require__(7);
|
|
|
|
var SVG_NS = 'http://www.w3.org/2000/svg';
|
|
var NODE_TYPE_COMMENT = 8;
|
|
|
|
/**
|
|
* Generic SVG element creation function
|
|
*
|
|
* @param svg SVG context, set to null if new
|
|
* @param width Document width
|
|
* @param height Document height
|
|
*/
|
|
exports.initSVG = function(svg, width, height) {
|
|
var defs, style, initialize = false;
|
|
|
|
if (svg && svg.querySelector) {
|
|
style = svg.querySelector('style');
|
|
if (style === null) {
|
|
initialize = true;
|
|
}
|
|
} else {
|
|
svg = DOM.newEl('svg', SVG_NS);
|
|
initialize = true;
|
|
}
|
|
|
|
if (initialize) {
|
|
defs = DOM.newEl('defs', SVG_NS);
|
|
style = DOM.newEl('style', SVG_NS);
|
|
DOM.setAttr(style, {
|
|
'type': 'text/css'
|
|
});
|
|
defs.appendChild(style);
|
|
svg.appendChild(defs);
|
|
}
|
|
|
|
//IE throws an exception if this is set and Chrome requires it to be set
|
|
if (svg.webkitMatchesSelector) {
|
|
svg.setAttribute('xmlns', SVG_NS);
|
|
}
|
|
|
|
//Remove comment nodes
|
|
for (var i = 0; i < svg.childNodes.length; i++) {
|
|
if (svg.childNodes[i].nodeType === NODE_TYPE_COMMENT) {
|
|
svg.removeChild(svg.childNodes[i]);
|
|
}
|
|
}
|
|
|
|
//Remove CSS
|
|
while (style.childNodes.length) {
|
|
style.removeChild(style.childNodes[0]);
|
|
}
|
|
|
|
DOM.setAttr(svg, {
|
|
'width': width,
|
|
'height': height,
|
|
'viewBox': '0 0 ' + width + ' ' + height,
|
|
'preserveAspectRatio': 'none'
|
|
});
|
|
|
|
return svg;
|
|
};
|
|
|
|
/**
|
|
* Converts serialized SVG to a string suitable for data URI use
|
|
* @param svgString Serialized SVG string
|
|
* @param [base64] Use base64 encoding for data URI
|
|
*/
|
|
exports.svgStringToDataURI = function() {
|
|
var rawPrefix = 'data:image/svg+xml;charset=UTF-8,';
|
|
var base64Prefix = 'data:image/svg+xml;charset=UTF-8;base64,';
|
|
|
|
return function(svgString, base64) {
|
|
if (base64) {
|
|
return base64Prefix + btoa(global.unescape(encodeURIComponent(svgString)));
|
|
} else {
|
|
return rawPrefix + encodeURIComponent(svgString);
|
|
}
|
|
};
|
|
}();
|
|
|
|
/**
|
|
* Returns serialized SVG with XML processing instructions
|
|
*
|
|
* @param svg SVG context
|
|
* @param stylesheets CSS stylesheets to include
|
|
*/
|
|
exports.serializeSVG = function(svg, engineSettings) {
|
|
if (!global.XMLSerializer) return;
|
|
var serializer = new XMLSerializer();
|
|
var svgCSS = '';
|
|
var stylesheets = engineSettings.stylesheets;
|
|
|
|
//External stylesheets: Processing Instruction method
|
|
if (engineSettings.svgXMLStylesheet) {
|
|
var xml = DOM.createXML();
|
|
//Add <?xml-stylesheet ?> directives
|
|
for (var i = stylesheets.length - 1; i >= 0; i--) {
|
|
var csspi = xml.createProcessingInstruction('xml-stylesheet', 'href="' + stylesheets[i] + '" rel="stylesheet"');
|
|
xml.insertBefore(csspi, xml.firstChild);
|
|
}
|
|
|
|
xml.removeChild(xml.documentElement);
|
|
svgCSS = serializer.serializeToString(xml);
|
|
}
|
|
|
|
var svgText = serializer.serializeToString(svg);
|
|
svgText = svgText.replace(/\&(\#[0-9]{2,}\;)/g, '&$1');
|
|
return svgCSS + svgText;
|
|
};
|
|
|
|
/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
|
|
|
|
/***/ },
|
|
/* 7 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/* WEBPACK VAR INJECTION */(function(global) {/**
|
|
* Generic new DOM element function
|
|
*
|
|
* @param tag Tag to create
|
|
* @param namespace Optional namespace value
|
|
*/
|
|
exports.newEl = function(tag, namespace) {
|
|
if (!global.document) return;
|
|
|
|
if (namespace == null) {
|
|
return global.document.createElement(tag);
|
|
} else {
|
|
return global.document.createElementNS(namespace, tag);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Generic setAttribute function
|
|
*
|
|
* @param el Reference to DOM element
|
|
* @param attrs Object with attribute keys and values
|
|
*/
|
|
exports.setAttr = function (el, attrs) {
|
|
for (var a in attrs) {
|
|
el.setAttribute(a, attrs[a]);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Creates a XML document
|
|
* @private
|
|
*/
|
|
exports.createXML = function() {
|
|
if (!global.DOMParser) return;
|
|
return new DOMParser().parseFromString('<xml />', 'application/xml');
|
|
};
|
|
|
|
/**
|
|
* Converts a value into an array of DOM nodes
|
|
*
|
|
* @param val A string, a NodeList, a Node, or an HTMLCollection
|
|
*/
|
|
exports.getNodeArray = function(val) {
|
|
var retval = null;
|
|
if (typeof(val) == 'string') {
|
|
retval = document.querySelectorAll(val);
|
|
} else if (global.NodeList && val instanceof global.NodeList) {
|
|
retval = val;
|
|
} else if (global.Node && val instanceof global.Node) {
|
|
retval = [val];
|
|
} else if (global.HTMLCollection && val instanceof global.HTMLCollection) {
|
|
retval = val;
|
|
} else if (val instanceof Array) {
|
|
retval = val;
|
|
} else if (val === null) {
|
|
retval = [];
|
|
}
|
|
|
|
retval = Array.prototype.slice.call(retval);
|
|
|
|
return retval;
|
|
};
|
|
|
|
/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
|
|
|
|
/***/ },
|
|
/* 8 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
var Color = function(color, options) {
|
|
//todo: support rgba, hsla, and rrggbbaa notation
|
|
//todo: use CIELAB internally
|
|
//todo: add clamp function (with sign)
|
|
if (typeof color !== 'string') return;
|
|
|
|
this.original = color;
|
|
|
|
if (color.charAt(0) === '#') {
|
|
color = color.slice(1);
|
|
}
|
|
|
|
if (/[^a-f0-9]+/i.test(color)) return;
|
|
|
|
if (color.length === 3) {
|
|
color = color.replace(/./g, '$&$&');
|
|
}
|
|
|
|
if (color.length !== 6) return;
|
|
|
|
this.alpha = 1;
|
|
|
|
if (options && options.alpha) {
|
|
this.alpha = options.alpha;
|
|
}
|
|
|
|
this.set(parseInt(color, 16));
|
|
};
|
|
|
|
//todo: jsdocs
|
|
Color.rgb2hex = function(r, g, b) {
|
|
function format (decimal) {
|
|
var hex = (decimal | 0).toString(16);
|
|
if (decimal < 16) {
|
|
hex = '0' + hex;
|
|
}
|
|
return hex;
|
|
}
|
|
|
|
return [r, g, b].map(format).join('');
|
|
};
|
|
|
|
//todo: jsdocs
|
|
Color.hsl2rgb = function (h, s, l) {
|
|
var H = h / 60;
|
|
var C = (1 - Math.abs(2 * l - 1)) * s;
|
|
var X = C * (1 - Math.abs(parseInt(H) % 2 - 1));
|
|
var m = l - (C / 2);
|
|
|
|
var r = 0, g = 0, b = 0;
|
|
|
|
if (H >= 0 && H < 1) {
|
|
r = C;
|
|
g = X;
|
|
} else if (H >= 1 && H < 2) {
|
|
r = X;
|
|
g = C;
|
|
} else if (H >= 2 && H < 3) {
|
|
g = C;
|
|
b = X;
|
|
} else if (H >= 3 && H < 4) {
|
|
g = X;
|
|
b = C;
|
|
} else if (H >= 4 && H < 5) {
|
|
r = X;
|
|
b = C;
|
|
} else if (H >= 5 && H < 6) {
|
|
r = C;
|
|
b = X;
|
|
}
|
|
|
|
r += m;
|
|
g += m;
|
|
b += m;
|
|
|
|
r = parseInt(r * 255);
|
|
g = parseInt(g * 255);
|
|
b = parseInt(b * 255);
|
|
|
|
return [r, g, b];
|
|
};
|
|
|
|
/**
|
|
* Sets the color from a raw RGB888 integer
|
|
* @param raw RGB888 representation of color
|
|
*/
|
|
//todo: refactor into a static method
|
|
//todo: factor out individual color spaces
|
|
//todo: add HSL, CIELAB, and CIELUV
|
|
Color.prototype.set = function (val) {
|
|
this.raw = val;
|
|
|
|
var r = (this.raw & 0xFF0000) >> 16;
|
|
var g = (this.raw & 0x00FF00) >> 8;
|
|
var b = (this.raw & 0x0000FF);
|
|
|
|
// BT.709
|
|
var y = 0.2126 * r + 0.7152 * g + 0.0722 * b;
|
|
var u = -0.09991 * r - 0.33609 * g + 0.436 * b;
|
|
var v = 0.615 * r - 0.55861 * g - 0.05639 * b;
|
|
|
|
this.rgb = {
|
|
r: r,
|
|
g: g,
|
|
b: b
|
|
};
|
|
|
|
this.yuv = {
|
|
y: y,
|
|
u: u,
|
|
v: v
|
|
};
|
|
|
|
return this;
|
|
};
|
|
|
|
/**
|
|
* Lighten or darken a color
|
|
* @param multiplier Amount to lighten or darken (-1 to 1)
|
|
*/
|
|
Color.prototype.lighten = function(multiplier) {
|
|
var cm = Math.min(1, Math.max(0, Math.abs(multiplier))) * (multiplier < 0 ? -1 : 1);
|
|
var bm = (255 * cm) | 0;
|
|
var cr = Math.min(255, Math.max(0, this.rgb.r + bm));
|
|
var cg = Math.min(255, Math.max(0, this.rgb.g + bm));
|
|
var cb = Math.min(255, Math.max(0, this.rgb.b + bm));
|
|
var hex = Color.rgb2hex(cr, cg, cb);
|
|
return new Color(hex);
|
|
};
|
|
|
|
/**
|
|
* Output color in hex format
|
|
* @param addHash Add a hash character to the beginning of the output
|
|
*/
|
|
Color.prototype.toHex = function(addHash) {
|
|
return (addHash ? '#' : '') + this.raw.toString(16);
|
|
};
|
|
|
|
/**
|
|
* Returns whether or not current color is lighter than another color
|
|
* @param color Color to compare against
|
|
*/
|
|
Color.prototype.lighterThan = function(color) {
|
|
if (!(color instanceof Color)) {
|
|
color = new Color(color);
|
|
}
|
|
|
|
return this.yuv.y > color.yuv.y;
|
|
};
|
|
|
|
/**
|
|
* Returns the result of mixing current color with another color
|
|
* @param color Color to mix with
|
|
* @param multiplier How much to mix with the other color
|
|
*/
|
|
/*
|
|
Color.prototype.mix = function (color, multiplier) {
|
|
if (!(color instanceof Color)) {
|
|
color = new Color(color);
|
|
}
|
|
|
|
var r = this.rgb.r;
|
|
var g = this.rgb.g;
|
|
var b = this.rgb.b;
|
|
var a = this.alpha;
|
|
|
|
var m = typeof multiplier !== 'undefined' ? multiplier : 0.5;
|
|
|
|
//todo: write a lerp function
|
|
r = r + m * (color.rgb.r - r);
|
|
g = g + m * (color.rgb.g - g);
|
|
b = b + m * (color.rgb.b - b);
|
|
a = a + m * (color.alpha - a);
|
|
|
|
return new Color(Color.rgbToHex(r, g, b), {
|
|
'alpha': a
|
|
});
|
|
};
|
|
*/
|
|
|
|
/**
|
|
* Returns the result of blending another color on top of current color with alpha
|
|
* @param color Color to blend on top of current color, i.e. "Ca"
|
|
*/
|
|
//todo: see if .blendAlpha can be merged into .mix
|
|
Color.prototype.blendAlpha = function(color) {
|
|
if (!(color instanceof Color)) {
|
|
color = new Color(color);
|
|
}
|
|
|
|
var Ca = color;
|
|
var Cb = this;
|
|
|
|
//todo: write alpha blending function
|
|
var r = Ca.alpha * Ca.rgb.r + (1 - Ca.alpha) * Cb.rgb.r;
|
|
var g = Ca.alpha * Ca.rgb.g + (1 - Ca.alpha) * Cb.rgb.g;
|
|
var b = Ca.alpha * Ca.rgb.b + (1 - Ca.alpha) * Cb.rgb.b;
|
|
|
|
return new Color(Color.rgb2hex(r, g, b));
|
|
};
|
|
|
|
module.exports = Color;
|
|
|
|
|
|
/***/ },
|
|
/* 9 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
module.exports = {
|
|
'version': '2.8.2',
|
|
'svg_ns': 'http://www.w3.org/2000/svg'
|
|
};
|
|
|
|
/***/ },
|
|
/* 10 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/* WEBPACK VAR INJECTION */(function(global) {var SVG = __webpack_require__(6);
|
|
var DOM = __webpack_require__(7);
|
|
var utils = __webpack_require__(5);
|
|
var constants = __webpack_require__(9);
|
|
|
|
var SVG_NS = constants.svg_ns;
|
|
|
|
var generatorComment = '\n' +
|
|
'Created with Holder.js ' + constants.version + '.\n' +
|
|
'Learn more at http://holderjs.com\n' +
|
|
'(c) 2012-2015 Ivan Malopinsky - http://imsky.co\n';
|
|
|
|
module.exports = (function() {
|
|
//Prevent IE <9 from initializing SVG renderer
|
|
if (!global.XMLSerializer) return;
|
|
var xml = DOM.createXML();
|
|
var svg = SVG.initSVG(null, 0, 0);
|
|
var bgEl = DOM.newEl('rect', SVG_NS);
|
|
svg.appendChild(bgEl);
|
|
|
|
//todo: create a reusable pool for textNodes, resize if more words present
|
|
|
|
return function(sceneGraph, renderSettings) {
|
|
var root = sceneGraph.root;
|
|
|
|
SVG.initSVG(svg, root.properties.width, root.properties.height);
|
|
|
|
var groups = svg.querySelectorAll('g');
|
|
|
|
for (var i = 0; i < groups.length; i++) {
|
|
groups[i].parentNode.removeChild(groups[i]);
|
|
}
|
|
|
|
var holderURL = renderSettings.holderSettings.flags.holderURL;
|
|
var holderId = 'holder_' + (Number(new Date()) + 32768 + (0 | Math.random() * 32768)).toString(16);
|
|
var sceneGroupEl = DOM.newEl('g', SVG_NS);
|
|
var textGroup = root.children.holderTextGroup;
|
|
var tgProps = textGroup.properties;
|
|
var textGroupEl = DOM.newEl('g', SVG_NS);
|
|
var tpdata = textGroup.textPositionData;
|
|
var textCSSRule = '#' + holderId + ' text { ' +
|
|
utils.cssProps({
|
|
'fill': tgProps.fill,
|
|
'font-weight': tgProps.font.weight,
|
|
'font-family': tgProps.font.family + ', monospace',
|
|
'font-size': tgProps.font.size + tgProps.font.units
|
|
}) + ' } ';
|
|
var commentNode = xml.createComment('\n' + 'Source URL: ' + holderURL + generatorComment);
|
|
var holderCSS = xml.createCDATASection(textCSSRule);
|
|
var styleEl = svg.querySelector('style');
|
|
var bg = root.children.holderBg;
|
|
|
|
DOM.setAttr(sceneGroupEl, {
|
|
id: holderId
|
|
});
|
|
|
|
svg.insertBefore(commentNode, svg.firstChild);
|
|
styleEl.appendChild(holderCSS);
|
|
|
|
sceneGroupEl.appendChild(bgEl);
|
|
|
|
//todo: abstract this into a cross-browser SVG outline method
|
|
if (bg.properties.outline) {
|
|
var outlineEl = DOM.newEl('path', SVG_NS);
|
|
var outlineWidth = bg.properties.outline.width;
|
|
var outlineOffsetWidth = outlineWidth / 2;
|
|
DOM.setAttr(outlineEl, {
|
|
'd': [
|
|
'M', outlineOffsetWidth, outlineOffsetWidth,
|
|
'H', bg.width - outlineOffsetWidth,
|
|
'V', bg.height - outlineOffsetWidth,
|
|
'H', outlineOffsetWidth,
|
|
'V', 0,
|
|
'M', 0, outlineOffsetWidth,
|
|
'L', bg.width, bg.height - outlineOffsetWidth,
|
|
'M', 0, bg.height - outlineOffsetWidth,
|
|
'L', bg.width, outlineOffsetWidth
|
|
].join(' '),
|
|
'stroke-width': bg.properties.outline.width,
|
|
'stroke': bg.properties.outline.fill,
|
|
'fill': 'none'
|
|
});
|
|
sceneGroupEl.appendChild(outlineEl);
|
|
}
|
|
|
|
sceneGroupEl.appendChild(textGroupEl);
|
|
svg.appendChild(sceneGroupEl);
|
|
|
|
DOM.setAttr(bgEl, {
|
|
'width': bg.width,
|
|
'height': bg.height,
|
|
'fill': bg.properties.fill
|
|
});
|
|
|
|
textGroup.y += tpdata.boundingBox.height * 0.8;
|
|
|
|
for (var lineKey in textGroup.children) {
|
|
var line = textGroup.children[lineKey];
|
|
for (var wordKey in line.children) {
|
|
var word = line.children[wordKey];
|
|
var x = textGroup.x + line.x + word.x;
|
|
var y = textGroup.y + line.y + word.y;
|
|
|
|
var textEl = DOM.newEl('text', SVG_NS);
|
|
var textNode = document.createTextNode(null);
|
|
|
|
DOM.setAttr(textEl, {
|
|
'x': x,
|
|
'y': y
|
|
});
|
|
|
|
textNode.nodeValue = word.properties.text;
|
|
textEl.appendChild(textNode);
|
|
textGroupEl.appendChild(textEl);
|
|
}
|
|
}
|
|
|
|
//todo: factor the background check up the chain, perhaps only return reference
|
|
var svgString = SVG.svgStringToDataURI(SVG.serializeSVG(svg, renderSettings.engineSettings), renderSettings.mode === 'background');
|
|
return svgString;
|
|
};
|
|
})();
|
|
/* WEBPACK VAR INJECTION */}.call(exports, (function() { return this; }())))
|
|
|
|
/***/ },
|
|
/* 11 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
|
|
exports = module.exports = trim;
|
|
|
|
function trim(str){
|
|
return str.replace(/^\s*|\s*$/g, '');
|
|
}
|
|
|
|
exports.left = function(str){
|
|
return str.replace(/^\s*/, '');
|
|
};
|
|
|
|
exports.right = function(str){
|
|
return str.replace(/\s*$/, '');
|
|
};
|
|
|
|
|
|
/***/ },
|
|
/* 12 */
|
|
/***/ function(module, exports, __webpack_require__) {
|
|
|
|
/**
|
|
* toString ref.
|
|
*/
|
|
|
|
var toString = Object.prototype.toString;
|
|
|
|
/**
|
|
* Return the type of `val`.
|
|
*
|
|
* @param {Mixed} val
|
|
* @return {String}
|
|
* @api public
|
|
*/
|
|
|
|
module.exports = function(val){
|
|
switch (toString.call(val)) {
|
|
case '[object Date]': return 'date';
|
|
case '[object RegExp]': return 'regexp';
|
|
case '[object Arguments]': return 'arguments';
|
|
case '[object Array]': return 'array';
|
|
case '[object Error]': return 'error';
|
|
}
|
|
|
|
if (val === null) return 'null';
|
|
if (val === undefined) return 'undefined';
|
|
if (val !== val) return 'nan';
|
|
if (val && val.nodeType === 1) return 'element';
|
|
|
|
val = val.valueOf
|
|
? val.valueOf()
|
|
: Object.prototype.valueOf.apply(val)
|
|
|
|
return typeof val;
|
|
};
|
|
|
|
|
|
/***/ }
|
|
/******/ ])
|
|
});
|
|
;
|
|
(function(ctx, isMeteorPackage) {
|
|
if (isMeteorPackage) {
|
|
Holder = ctx.Holder;
|
|
}
|
|
})(this, typeof Meteor !== 'undefined' && typeof Package !== 'undefined');
|