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Diffstat (limited to 'js/spin.js')
| -rw-r--r-- | js/spin.js | 349 |
1 files changed, 0 insertions, 349 deletions
diff --git a/js/spin.js b/js/spin.js deleted file mode 100644 index c66c607a7..000000000 --- a/js/spin.js +++ /dev/null @@ -1,349 +0,0 @@ -//fgnass.github.com/spin.js#v1.3 - -/** - * Copyright (c) 2011-2013 Felix Gnass - * Licensed under the MIT license - */ -(function(root, factory) { - - /* CommonJS */ - if (typeof exports == 'object') module.exports = factory() - - /* AMD module */ - else if (typeof define == 'function' && define.amd) define(factory) - - /* Browser global */ - else root.Spinner = factory() -} -(this, function() { - "use strict"; - - var prefixes = ['webkit', 'Moz', 'ms', 'O'] /* Vendor prefixes */ - , animations = {} /* Animation rules keyed by their name */ - , useCssAnimations /* Whether to use CSS animations or setTimeout */ - - /** - * Utility function to create elements. If no tag name is given, - * a DIV is created. Optionally properties can be passed. - */ - function createEl(tag, prop) { - var el = document.createElement(tag || 'div') - , n - - for(n in prop) el[n] = prop[n] - return el - } - - /** - * Appends children and returns the parent. - */ - function ins(parent /* child1, child2, ...*/) { - for (var i=1, n=arguments.length; i<n; i++) - parent.appendChild(arguments[i]) - - return parent - } - - /** - * Insert a new stylesheet to hold the @keyframe or VML rules. - */ - var sheet = (function() { - var el = createEl('style', {type : 'text/css'}) - ins(document.getElementsByTagName('head')[0], el) - return el.sheet || el.styleSheet - }()) - - /** - * Creates an opacity keyframe animation rule and returns its name. - * Since most mobile Webkits have timing issues with animation-delay, - * we create separate rules for each line/segment. - */ - function addAnimation(alpha, trail, i, lines) { - var name = ['opacity', trail, ~~(alpha*100), i, lines].join('-') - , start = 0.01 + i/lines * 100 - , z = Math.max(1 - (1-alpha) / trail * (100-start), alpha) - , prefix = useCssAnimations.substring(0, useCssAnimations.indexOf('Animation')).toLowerCase() - , pre = prefix && '-' + prefix + '-' || '' - - if (!animations[name]) { - sheet.insertRule( - '@' + pre + 'keyframes ' + name + '{' + - '0%{opacity:' + z + '}' + - start + '%{opacity:' + alpha + '}' + - (start+0.01) + '%{opacity:1}' + - (start+trail) % 100 + '%{opacity:' + alpha + '}' + - '100%{opacity:' + z + '}' + - '}', sheet.cssRules.length) - - animations[name] = 1 - } - - return name - } - - /** - * Tries various vendor prefixes and returns the first supported property. - */ - function vendor(el, prop) { - var s = el.style - , pp - , i - - if(s[prop] !== undefined) return prop - prop = prop.charAt(0).toUpperCase() + prop.slice(1) - for(i=0; i<prefixes.length; i++) { - pp = prefixes[i]+prop - if(s[pp] !== undefined) return pp - } - } - - /** - * Sets multiple style properties at once. - */ - function css(el, prop) { - for (var n in prop) - el.style[vendor(el, n)||n] = prop[n] - - return el - } - - /** - * Fills in default values. - */ - function merge(obj) { - for (var i=1; i < arguments.length; i++) { - var def = arguments[i] - for (var n in def) - if (obj[n] === undefined) obj[n] = def[n] - } - return obj - } - - /** - * Returns the absolute page-offset of the given element. - */ - function pos(el) { - var o = { x:el.offsetLeft, y:el.offsetTop } - while((el = el.offsetParent)) - o.x+=el.offsetLeft, o.y+=el.offsetTop - - return o - } - - // Built-in defaults - - var defaults = { - lines: 12, // The number of lines to draw - length: 7, // The length of each line - width: 5, // The line thickness - radius: 10, // The radius of the inner circle - rotate: 0, // Rotation offset - corners: 1, // Roundness (0..1) - color: '#000', // #rgb or #rrggbb - direction: 1, // 1: clockwise, -1: counterclockwise - speed: 1, // Rounds per second - trail: 100, // Afterglow percentage - opacity: 1/4, // Opacity of the lines - fps: 20, // Frames per second when using setTimeout() - zIndex: 2e9, // Use a high z-index by default - className: 'spinner', // CSS class to assign to the element - top: 'auto', // center vertically - left: 'auto', // center horizontally - position: 'relative' // element position - } - - /** The constructor */ - function Spinner(o) { - if (typeof this == 'undefined') return new Spinner(o) - this.opts = merge(o || {}, Spinner.defaults, defaults) - } - - // Global defaults that override the built-ins: - Spinner.defaults = {} - - merge(Spinner.prototype, { - - /** - * Adds the spinner to the given target element. If this instance is already - * spinning, it is automatically removed from its previous target b calling - * stop() internally. - */ - spin: function(target) { - this.stop() - - var self = this - , o = self.opts - , el = self.el = css(createEl(0, {className: o.className}), {position: o.position, width: 0, zIndex: o.zIndex}) - , mid = o.radius+o.length+o.width - , ep // element position - , tp // target position - - if (target) { - target.insertBefore(el, target.firstChild||null) - tp = pos(target) - ep = pos(el) - css(el, { - left: (o.left == 'auto' ? tp.x-ep.x + (target.offsetWidth >> 1) : parseInt(o.left, 10) + mid) + 'px', - top: (o.top == 'auto' ? tp.y-ep.y + (target.offsetHeight >> 1) : parseInt(o.top, 10) + mid) + 'px' - }) - } - - el.setAttribute('role', 'progressbar') - self.lines(el, self.opts) - - if (!useCssAnimations) { - // No CSS animation support, use setTimeout() instead - var i = 0 - , start = (o.lines - 1) * (1 - o.direction) / 2 - , alpha - , fps = o.fps - , f = fps/o.speed - , ostep = (1-o.opacity) / (f*o.trail / 100) - , astep = f/o.lines - - ;(function anim() { - i++; - for (var j = 0; j < o.lines; j++) { - alpha = Math.max(1 - (i + (o.lines - j) * astep) % f * ostep, o.opacity) - - self.opacity(el, j * o.direction + start, alpha, o) - } - self.timeout = self.el && setTimeout(anim, ~~(1000/fps)) - })() - } - return self - }, - - /** - * Stops and removes the Spinner. - */ - stop: function() { - var el = this.el - if (el) { - clearTimeout(this.timeout) - if (el.parentNode) el.parentNode.removeChild(el) - this.el = undefined - } - return this - }, - - /** - * Internal method that draws the individual lines. Will be overwritten - * in VML fallback mode below. - */ - lines: function(el, o) { - var i = 0 - , start = (o.lines - 1) * (1 - o.direction) / 2 - , seg - - function fill(color, shadow) { - return css(createEl(), { - position: 'absolute', - width: (o.length+o.width) + 'px', - height: o.width + 'px', - background: color, - boxShadow: shadow, - transformOrigin: 'left', - transform: 'rotate(' + ~~(360/o.lines*i+o.rotate) + 'deg) translate(' + o.radius+'px' +',0)', - borderRadius: (o.corners * o.width>>1) + 'px' - }) - } - - for (; i < o.lines; i++) { - seg = css(createEl(), { - position: 'absolute', - top: 1+~(o.width/2) + 'px', - transform: o.hwaccel ? 'translate3d(0,0,0)' : '', - opacity: o.opacity, - animation: useCssAnimations && addAnimation(o.opacity, o.trail, start + i * o.direction, o.lines) + ' ' + 1/o.speed + 's linear infinite' - }) - - if (o.shadow) ins(seg, css(fill('#000', '0 0 4px ' + '#000'), {top: 2+'px'})) - - ins(el, ins(seg, fill(o.color, '0 0 1px rgba(0,0,0,.1)'))) - } - return el - }, - - /** - * Internal method that adjusts the opacity of a single line. - * Will be overwritten in VML fallback mode below. - */ - opacity: function(el, i, val) { - if (i < el.childNodes.length) el.childNodes[i].style.opacity = val - } - - }) - - - function initVML() { - - /* Utility function to create a VML tag */ - function vml(tag, attr) { - return createEl('<' + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr) - } - - // No CSS transforms but VML support, add a CSS rule for VML elements: - sheet.addRule('.spin-vml', 'behavior:url(#default#VML)') - - Spinner.prototype.lines = function(el, o) { - var r = o.length+o.width - , s = 2*r - - function grp() { - return css( - vml('group', { - coordsize: s + ' ' + s, - coordorigin: -r + ' ' + -r - }), - { width: s, height: s } - ) - } - - var margin = -(o.width+o.length)*2 + 'px' - , g = css(grp(), {position: 'absolute', top: margin, left: margin}) - , i - - function seg(i, dx, filter) { - ins(g, - ins(css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx}), - ins(css(vml('roundrect', {arcsize: o.corners}), { - width: r, - height: o.width, - left: o.radius, - top: -o.width>>1, - filter: filter - }), - vml('fill', {color: o.color, opacity: o.opacity}), - vml('stroke', {opacity: 0}) // transparent stroke to fix color bleeding upon opacity change - ) - ) - ) - } - - if (o.shadow) - for (i = 1; i <= o.lines; i++) - seg(i, -2, 'progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)') - - for (i = 1; i <= o.lines; i++) seg(i) - return ins(el, g) - } - - Spinner.prototype.opacity = function(el, i, val, o) { - var c = el.firstChild - o = o.shadow && o.lines || 0 - if (c && i+o < c.childNodes.length) { - c = c.childNodes[i+o]; c = c && c.firstChild; c = c && c.firstChild - if (c) c.opacity = val - } - } - } - - var probe = css(createEl('group'), {behavior: 'url(#default#VML)'}) - - if (!vendor(probe, 'transform') && probe.adj) initVML() - else useCssAnimations = vendor(probe, 'animation') - - return Spinner - -})); |