/** * Copyright (c) 2011-2014 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>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(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.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: 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 } } } var probe = css(createEl('group'), {behavior: 'url(#default#VML)'}) if (!vendor(probe, 'transform') && probe.adj) initVML() else useCssAnimations = vendor(probe, 'animation') return Spinner })); /* You can now create a spinner using any of the variants below: $("#el").spin(); // Produces default Spinner using the text color of #el. $("#el").spin("small"); // Produces a 'small' Spinner using the text color of #el. $("#el").spin("large", "white"); // Produces a 'large' Spinner in white (or any valid CSS color). $("#el").spin({ ... }); // Produces a Spinner using your custom settings. $("#el").spin(false); // Kills the spinner. */ (function ($) { $.fn.spin = function (opts, color) { var presets = { "tiny": { lines: 8, length: 2, width: 2, radius: 3 }, "small": { lines: 8, length: 4, width: 3, radius: 5 }, "large": { lines: 10, length: 8, width: 4, radius: 8 } }; if (Spinner) { return this.each(function () { var $this = $(this), data = $this.data(); if (data.spinner) { data.spinner.stop(); delete data.spinner; } if (opts !== false) { if (typeof opts === "string") { if (opts in presets) { opts = presets[opts]; } else { opts = {}; } if (color) { opts.color = color; } } data.spinner = new Spinner($.extend({ color: $this.css('color') }, opts)).spin(this); } }); } else { throw "Spinner class not available."; } }; })(jQuery);