www-thermferm/js/spin.js

changeset 97
4a9dbee41a6c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/www-thermferm/js/spin.js	Tue Jul 08 23:53:04 2014 +0200
@@ -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
+
+}));

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