Merge pull request #77 from git-marijus/master

add spin.js a themable js spinner to red 

3 files changed, 439 insertions, 10 deletions

diff --git a/js/jquery.spin.js b/js/jquery.spin.js
new file mode 100644
index 000000000..a35a27765
--- /dev/null
+++ b/js/jquery.spin.js
@@ -0,0 +1,80 @@
+/**
+ * Copyright (c) 2011-2013 Felix Gnass
+ * Licensed under the MIT license
+ */
+
+/*
+
+Basic Usage:
+============
+
+$('#el').spin(); // Creates a default Spinner using the text color of #el.
+$('#el').spin({ ... }); // Creates a Spinner using the provided options.
+
+$('#el').spin(false); // Stops and removes the spinner.
+
+Using Presets:
+==============
+
+$('#el').spin('small'); // Creates a 'small' Spinner using the text color of #el.
+$('#el').spin('large', '#fff'); // Creates a 'large' white Spinner.
+
+Adding a custom preset:
+=======================
+
+$.fn.spin.presets.flower = {
+  lines: 9
+  length: 10
+  width: 20
+  radius: 0
+}
+
+$('#el').spin('flower', 'red');
+
+*/
+
+(function(factory) {
+
+  if (typeof exports == 'object') {
+    // CommonJS
+    factory(require('jquery'), require('spin'))
+  }
+  else if (typeof define == 'function' && define.amd) {
+    // AMD, register as anonymous module
+    define(['jquery', 'spin'], factory)
+  }
+  else {
+    // Browser globals
+    if (!window.Spinner) throw new Error('Spin.js not present')
+    factory(window.jQuery, window.Spinner)
+  }
+
+}(function($, Spinner) {
+
+  $.fn.spin = function(opts, color) {
+
+    return this.each(function() {
+      var $this = $(this),
+        data = $this.data();
+
+      if (data.spinner) {
+        data.spinner.stop();
+        delete data.spinner;
+      }
+      if (opts !== false) {
+        opts = $.extend(
+          { color: color || $this.css('color') },
+          $.fn.spin.presets[opts] || opts
+        )
+        data.spinner = new Spinner(opts).spin(this)
+      }
+    })
+  }
+
+  $.fn.spin.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 }
+  }
+
+}));
diff --git a/js/main.js b/js/main.js
index 9eb9c7946..2d1e9ab76 100644
--- a/js/main.js
+++ b/js/main.js
@@ -252,7 +252,7 @@
 	function NavUpdate() {
 
 		if(liking)
-			$('.like-rotator').hide();
+			$('.like-rotator').spin(false);
 
 		if(! stopped) {
 
@@ -440,7 +440,7 @@ function updateConvItems(mode,data) {
 		});
 	}
 
-	$('.like-rotator').hide();
+	$('.like-rotator').spin(false);
 
 	if(commentBusy) {
 		commentBusy = false;
@@ -492,7 +492,7 @@ function updateConvItems(mode,data) {
 
 
 	function liveUpdate() {
-		if((src == null) || (stopped) || (! profile_uid)) { $('.like-rotator').hide(); return; }
+		if((src == null) || (stopped) || (! profile_uid)) { $('.like-rotator').spin(false); return; }
 		if(($('.comment-edit-text-full').length) || (in_progress)) {
 			if(livetime) {
 				clearTimeout(livetime);
@@ -526,7 +526,7 @@ function updateConvItems(mode,data) {
 		}
 
 		if(page_load)
-			$("#page-spinner").show();
+			$("#page-spinner").spin('small');
 
 		$.get(update_url,function(data) {
 			var update_mode = ((page_load) ? 'replace' : 'update');
@@ -536,8 +536,8 @@ function updateConvItems(mode,data) {
 			scroll_next = false;
 			in_progress = false;
 			updateConvItems(update_mode,data);
-			$("#page-spinner").hide();
-			$("#profile-jot-text-loading").hide();
+			$("#page-spinner").spin(false);
+			$("#profile-jot-text-loading").spin(false);
 
 		});
 
@@ -603,14 +603,14 @@ function updateConvItems(mode,data) {
 
 	function dolike(ident,verb) {
 		unpause();
-		$('#like-rotator-' + ident.toString()).show();
+		$('#like-rotator-' + ident.toString()).spin('tiny');
 		$.get('like/' + ident.toString() + '?verb=' + verb, NavUpdate );
 		liking = 1;
 	}
 
 	function dosubthread(ident) {
 		unpause();
-		$('#like-rotator-' + ident.toString()).show();
+		$('#like-rotator-' + ident.toString()).spin('tiny');
 		$.get('subthread/' + ident.toString(), NavUpdate );
 		liking = 1;
 	}
@@ -618,7 +618,7 @@ function updateConvItems(mode,data) {
 
 	function dostar(ident) {
 		ident = ident.toString();
-		$('#like-rotator-' + ident).show();
+		$('#like-rotator-' + ident).spin('tiny');
 		$.get('starred/' + ident, function(data) {
 			if(data.result == 1) {
 				$('#starred-' + ident).addClass('starred');
@@ -632,7 +632,7 @@ function updateConvItems(mode,data) {
 				$('#star-' + ident).removeClass('hidden');
 				$('#unstar-' + ident).addClass('hidden');
 			}
-			$('#like-rotator-' + ident).hide();	
+			$('#like-rotator-' + ident).spin(false);	
 		});
 	}
 
diff --git a/js/spin.js b/js/spin.js
new file mode 100644
index 000000000..c66c607a7
--- /dev/null
+++ b/js/spin.js
@@ -0,0 +1,349 @@
+//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
+
+}));