From f2d74de7e8efaca446c014cb51069d828c1a1bc1 Mon Sep 17 00:00:00 2001
From: "Alex A. Naanou" <alex.nanou@gmail.com>
Date: Sun, 10 Feb 2013 05:09:30 +0400
Subject: [PATCH] added spin.js and a spinner to the splash screen...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
---
 ext-lib/spin.js     | 320 ++++++++++++++++++++++++++++++++++++++++++++
 index.html          |  28 +++-
 keybindings.js      |   2 +-
 magazine-themes.css |  33 +++++
 4 files changed, 381 insertions(+), 2 deletions(-)
 create mode 100755 ext-lib/spin.js

diff --git a/ext-lib/spin.js b/ext-lib/spin.js
new file mode 100755
index 0000000..9aac5a3
--- /dev/null
+++ b/ext-lib/spin.js
@@ -0,0 +1,320 @@
+//fgnass.github.com/spin.js#v1.2.8
+!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
+  }
+
+  /**
+   * 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
+  }
+
+  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
+    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 (!this.spin) return new Spinner(o)
+    this.opts = merge(o || {}, Spinner.defaults, defaults)
+  }
+
+  Spinner.defaults = {}
+
+  merge(Spinner.prototype, {
+    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('aria-role', 'progressbar')
+      self.lines(el, self.opts)
+
+      if (!useCssAnimations) {
+        // No CSS animation support, use setTimeout() instead
+        var 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
+    },
+
+    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+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, 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
+    },
+
+    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() {
+
+    function vml(tag, attr) {
+      return createEl('<' + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr)
+    }
+
+    var s = css(createEl('group'), {behavior: 'url(#default#VML)'})
+
+    if (!vendor(s, 'transform') && s.adj) {
+
+      // VML support detected. Insert CSS rule ...
+      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
+        }
+      }
+    }
+    else
+      useCssAnimations = vendor(s, 'animation')
+  })()
+
+  if (typeof define == 'function' && define.amd)
+    define(function() { return Spinner })
+  else
+    window.Spinner = Spinner
+
+}(window, document);
diff --git a/index.html b/index.html
index 72892a8..ed726d8 100755
--- a/index.html
+++ b/index.html
@@ -11,6 +11,7 @@
 <script src="ext-lib/jquery.js"></script>
 <script src="ext-lib/jquery.touchSwipe.js"></script>
 <script src="ext-lib/jstorage.js"></script>
+<script src="ext-lib/spin.js"></script>
 <!-- EXPERIMENTAL -->
 <!-- 
 XXX scrollTo is a cool and a powerfull tool but it needs a sustantial code reorganization 
@@ -150,8 +151,12 @@ $(document).ready(function(){
 			setTimeout(function(){
 				$('.splash').fadeOut()
 			}, 350)
+			setTimeout(function(){
+				spinner.stop()
+			}, 500)
 		})
 
+
 	// setup the editor buttons...
 	// XXX
 	
@@ -169,7 +174,28 @@ $(document).ready(function(){
 	<div class="splash noSwipe">
 		<!-- XXX replace this with a background-image logo... -->
 		<table width="100%" height="100%"><tr><td align="center" valign="middle">
-			<h2><i>loading...</i></h2>
+			<h2><div id="spinner" style="position:relative; display:inline-block; width:50px; height:50px; vertical-align:middle;"></div><i>loading...</i></h2>
+			<script>
+			// add a spinner to the splash...
+			var opts = {
+				lines: 11, // The number of lines to draw
+				length: 6, // The length of each line
+				width: 4, // The line thickness
+				radius: 8, // The radius of the inner circle
+				corners: 1, // Corner roundness (0..1)
+				rotate: 0, // The rotation offset
+				color: $('.splash #spinner').css('color'), // #rgb or #rrggbb
+				speed: 1, // Rounds per second
+				trail: 64, // Afterglow percentage
+				shadow: false, // Whether to render a shadow
+				hwaccel: true, // Whether to use hardware acceleration
+				className: 'spinner', // The CSS class to assign to the spinner
+				zIndex: 2e9, // The z-index (defaults to 2000000000)
+				top: 'auto', // Top position relative to parent in px
+				left: 'auto' // Left position relative to parent in px
+			}
+			var spinner = new Spinner(opts).spin($('#spinner')[0])
+			</script>
 		</td></tr></table>
 	</div>
 
diff --git a/keybindings.js b/keybindings.js
index 3e3dbf8..15bc4fe 100755
--- a/keybindings.js
+++ b/keybindings.js
@@ -44,7 +44,7 @@ var keybindings = {
 	*/
 
 	// ignore all keys here...
-	'.editor-mode': {
+	'.inline-editor-mode': {
 		ignore: '*'
 	},
 
diff --git a/magazine-themes.css b/magazine-themes.css
index 3779a78..1bae992 100755
--- a/magazine-themes.css
+++ b/magazine-themes.css
@@ -5,6 +5,17 @@
 
 /*************************************** main structural elements ****/
 
+.splash {
+	background: gray;
+}
+.splash * {
+	color: white;
+}
+.splash #spinner {
+	color: white;
+}
+
+
 .viewer {
 	background: gray;
 }
@@ -106,6 +117,17 @@
 .light {
 }
 
+.light .splash {
+	background: white;
+}
+.light .splash * {
+	color: gray;
+}
+.light .splash #spinner {
+	color: gray;
+}
+
+
 .light.viewer {
 	background: white;
 }
@@ -169,6 +191,17 @@
 .dark {
 }
 
+.dark .splash {
+	background: black;
+}
+.dark .splash * {
+	color: silver;
+}
+.dark .splash #spinner {
+	color: white;
+}
+
+
 .dark.viewer {
 	background: #111;
 }