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Diffstat (limited to 'public/js/vendor/spin.js')
| -rw-r--r-- | public/js/vendor/spin.js | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/public/js/vendor/spin.js b/public/js/vendor/spin.js new file mode 100644 index 0000000..1a3258d --- /dev/null +++ b/public/js/vendor/spin.js @@ -0,0 +1,377 @@ +/** + * Copyright (c) 2011-2014 Felix Gnass + * Licensed under the MIT license + * http://spin.js.org/ + * + * Example: + var opts = { + 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 + , scale: 1.0 // Scales overall size of the spinner + , corners: 1 // Roundness (0..1) + , color: '#000' // #rgb or #rrggbb + , opacity: 1/4 // Opacity of the lines + , rotate: 0 // Rotation offset + , direction: 1 // 1: clockwise, -1: counterclockwise + , speed: 1 // Rounds per second + , trail: 100 // Afterglow percentage + , 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: '50%' // center vertically + , left: '50%' // center horizontally + , shadow: false // Whether to render a shadow + , hwaccel: false // Whether to use hardware acceleration (might be buggy) + , position: 'absolute' // Element positioning + } + var target = document.getElementById('foo') + var spinner = new Spinner(opts).spin(target) + */ +;(function (root, factory) { + + /* CommonJS */ + if (typeof module == 'object' && module.exports) 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 */ + , sheet /* A stylesheet to hold the @keyframe or VML rules. */ + + /** + * 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 + } + + /** + * 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 + + prop = prop.charAt(0).toUpperCase() + prop.slice(1) + if (s[prop] !== undefined) return prop + 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 line color from the given string or array. + */ + function getColor (color, idx) { + return typeof color == 'string' ? color : color[idx % color.length] + } + + // 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 + , scale: 1.0 // Scales overall size of the spinner + , corners: 1 // Roundness (0..1) + , color: '#000' // #rgb or #rrggbb + , opacity: 1/4 // Opacity of the lines + , rotate: 0 // Rotation offset + , direction: 1 // 1: clockwise, -1: counterclockwise + , speed: 1 // Rounds per second + , trail: 100 // Afterglow percentage + , 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: '50%' // center vertically + , left: '50%' // center horizontally + , shadow: false // Whether to render a shadow + , hwaccel: false // Whether to use hardware acceleration (might be buggy) + , position: 'absolute' // Element positioning + } + + /** The constructor */ + function 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 = createEl(null, {className: o.className}) + + css(el, { + position: o.position + , width: 0 + , zIndex: o.zIndex + , left: o.left + , top: o.top + }) + + if (target) { + target.insertBefore(el, target.firstChild || null) + } + + 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.scale * (o.length + o.width) + 'px' + , height: o.scale * o.width + 'px' + , background: color + , boxShadow: shadow + , transformOrigin: 'left' + , transform: 'rotate(' + ~~(360/o.lines*i + o.rotate) + 'deg) translate(' + o.scale*o.radius + 'px' + ',0)' + , borderRadius: (o.corners * o.scale * o.width >> 1) + 'px' + }) + } + + for (; i < o.lines; i++) { + seg = css(createEl(), { + position: 'absolute' + , top: 1 + ~(o.scale * 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: '2px'})) + ins(el, ins(seg, fill(getColor(o.color, i), '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.scale * (o.length + o.width) + , s = o.scale * 2 * r + + function grp () { + return css( + vml('group', { + coordsize: s + ' ' + s + , coordorigin: -r + ' ' + -r + }) + , { width: s, height: s } + ) + } + + var margin = -(o.width + o.length) * o.scale * 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.scale * o.width + , left: o.scale * o.radius + , top: -o.scale * o.width >> 1 + , filter: filter + } + ) + , vml('fill', {color: getColor(o.color, i), 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 + } + } + } + + if (typeof document !== 'undefined') { + sheet = (function () { + var el = createEl('style', {type : 'text/css'}) + ins(document.getElementsByTagName('head')[0], el) + return el.sheet || el.styleSheet + }()) + + var probe = css(createEl('group'), {behavior: 'url(#default#VML)'}) + + if (!vendor(probe, 'transform') && probe.adj) initVML() + else useCssAnimations = vendor(probe, 'animation') + } + + return Spinner + +})); |