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dnagir committed Dec 20, 2011
0 parents commit 66b08d8d2f2a364548b234d790625bfc5909178a
Showing with 345 additions and 0 deletions.
  1. +5 −0 .gitignore
  2. +4 −0 Gemfile
  3. +1 −0 Rakefile
  4. +7 −0 lib/spinjs-rails.rb
  5. +4 −0 lib/spinjs-rails/engine.rb
  6. +5 −0 lib/spinjs-rails/version.rb
  7. +24 −0 spinjs-rails.gemspec
  8. +295 −0 vendor/assets/javascripts/spin.js
@@ -0,0 +1,5 @@
+*.gem
+.bundle
+Gemfile.lock
+pkg/*
+*.swp
@@ -0,0 +1,4 @@
+source "http://rubygems.org"
+
+# Specify your gem's dependencies in spinjs-rails.gemspec
+gemspec
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+require "bundler/gem_tasks"
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+require "spinjs-rails/version"
+
+module Spinjs
+ module Rails
+ # Your code goes here...
+ end
+end
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+module Spinjs
+ class Engine < Rails::Engine
+ end
+end
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+module Spinjs
+ module Rails
+ VERSION = "0.0.1"
+ end
+end
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+# -*- encoding: utf-8 -*-
+$:.push File.expand_path("../lib", __FILE__)
+require "spinjs-rails/version"
+
+Gem::Specification.new do |s|
+ s.name = "spinjs-rails"
+ s.version = Spinjs::Rails::VERSION
+ s.authors = ["Dmytrii Nagirniak"]
+ s.email = ["dnagir@gmail.com"]
+ s.homepage = ""
+ s.summary = %q{TODO: Write a gem summary}
+ s.description = %q{TODO: Write a gem description}
+
+ s.rubyforge_project = "spinjs-rails"
+
+ s.files = `git ls-files`.split("\n")
+ s.test_files = `git ls-files -- {test,spec,features}/*`.split("\n")
+ s.executables = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+ s.require_paths = ["lib"]
+
+ # specify any dependencies here; for example:
+ # s.add_development_dependency "rspec"
+ # s.add_runtime_dependency "rest-client"
+end
@@ -0,0 +1,295 @@
+//fgnass.github.com/spin.js#v1.2.2
+(function(window, document, undefined) {
+
+/**
+ * Copyright (c) 2011 Felix Gnass [fgnass at neteye dot de]
+ * Licensed under the MIT license
+ */
+
+ var prefixes = ['webkit', 'Moz', 'ms', 'O'], /* Vendor prefixes */
+ animations = {}, /* Animation rules keyed by their name */
+ useCssAnimations;
+
+ /**
+ * 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;
+ }
+
+ /**
+ * Inserts child1 before child2. If child2 is not specified,
+ * child1 is appended. If child2 has no parentNode, child2 is
+ * appended first.
+ */
+ function ins(parent, child1, child2) {
+ if(child2 && !child2.parentNode) ins(parent, child2);
+ parent.insertBefore(child1, child2||null);
+ return parent;
+ }
+
+ /**
+ * Insert a new stylesheet to hold the @keyframe or VML rules.
+ */
+ var sheet = (function() {
+ var el = createEl('style');
+ 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 + '}' +
+ '}', 0);
+ 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;
+ }
+
+ /** The constructor */
+ var Spinner = function Spinner(o) {
+ if (!this.spin) return new Spinner(o);
+ this.opts = merge(o || {}, Spinner.defaults, defaults);
+ },
+ defaults = Spinner.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
+ color: '#000', // #rgb or #rrggbb
+ speed: 1, // Rounds per second
+ trail: 100, // Afterglow percentage
+ opacity: 1/4,
+ fps: 20
+ },
+ proto = Spinner.prototype = {
+ spin: function(target) {
+ this.stop();
+ var self = this,
+ el = self.el = css(createEl(), {position: 'relative'}),
+ ep, // element position
+ tp; // target position
+
+ if (target) {
+ tp = pos(ins(target, el, target.firstChild));
+ ep = pos(el);
+ css(el, {
+ left: (target.offsetWidth >> 1) - ep.x+tp.x + 'px',
+ top: (target.offsetHeight >> 1) - ep.y+tp.y + 'px'
+ });
+ }
+ el.setAttribute('aria-role', 'progressbar');
+ self.lines(el, self.opts);
+ if (!useCssAnimations) {
+ // No CSS animation support, use setTimeout() instead
+ var o = self.opts,
+ i = 0,
+ fps = o.fps,
+ f = fps/o.speed,
+ ostep = (1-o.opacity)/(f*o.trail / 100),
+ astep = f/o.lines;
+
+ (function anim() {
+ i++;
+ for (var s=o.lines; s; s--) {
+ var alpha = Math.max(1-(i+s*astep)%f * ostep, o.opacity);
+ self.opacity(el, o.lines-s, alpha, o);
+ }
+ self.timeout = self.el && setTimeout(anim, ~~(1000/fps));
+ })();
+ }
+ return self;
+ },
+ stop: function() {
+ var el = this.el;
+ if (el) {
+ clearTimeout(this.timeout);
+ if (el.parentNode) el.parentNode.removeChild(el);
+ this.el = undefined;
+ }
+ return this;
+ }
+ };
+ proto.lines = function(el, o) {
+ var i = 0,
+ 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) + 'deg) translate(' + o.radius+'px' +',0)',
+ borderRadius: (o.width>>1) + 'px'
+ });
+ }
+ for (; i < o.lines; i++) {
+ seg = css(createEl(), {
+ position: 'absolute',
+ top: 1+~(o.width/2) + 'px',
+ transform: 'translate3d(0,0,0)',
+ opacity: o.opacity,
+ animation: useCssAnimations && addAnimation(o.opacity, o.trail, i, 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;
+ };
+ proto.opacity = function(el, i, val) {
+ if (i < el.childNodes.length) el.childNodes[i].style.opacity = val;
+ };
+
+ /////////////////////////////////////////////////////////////////////////
+ // VML rendering for IE
+ /////////////////////////////////////////////////////////////////////////
+
+ /**
+ * Check and init VML support
+ */
+ (function() {
+ var s = css(createEl('group'), {behavior: 'url(#default#VML)'}),
+ i;
+
+ if (!vendor(s, 'transform') && s.adj) {
+
+ // VML support detected. Insert CSS rules ...
+ for (i=4; i--;) sheet.addRule(['group', 'roundrect', 'fill', 'stroke'][i], 'behavior:url(#default#VML)');
+
+ proto.lines = function(el, o) {
+ var r = o.length+o.width,
+ s = 2*r;
+
+ function grp() {
+ return css(createEl('group', {coordsize: s +' '+s, coordorigin: -r +' '+-r}), {width: s, height: s});
+ }
+
+ var g = grp(),
+ margin = ~(o.length+o.radius+o.width)+'px',
+ i;
+
+ function seg(i, dx, filter) {
+ ins(g,
+ ins(css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx}),
+ ins(css(createEl('roundrect', {arcsize: 1}), {
+ width: r,
+ height: o.width,
+ left: o.radius,
+ top: -o.width>>1,
+ filter: filter
+ }),
+ createEl('fill', {color: o.color, opacity: o.opacity}),
+ createEl('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(css(el, {
+ margin: margin + ' 0 0 ' + margin,
+ zoom: 1
+ }), g);
+ };
+ proto.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;
+ }
+ };
+ }
+ else {
+ useCssAnimations = vendor(s, 'animation');
+ }
+ })();
+
+ window.Spinner = Spinner;
+
+})(window, document);

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