From 770ba5201f5c60b2bb36602ff9d359f641e33125 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Sun, 23 Oct 2011 21:14:40 +0200
Subject: Charting with flask, rgraph and custom "timeseries database"

---
 schall/static/RGraph/libraries/RGraph.pie.js | 1042 ++++++++++++++++++++++++++
 1 file changed, 1042 insertions(+)
 create mode 100644 schall/static/RGraph/libraries/RGraph.pie.js

(limited to 'schall/static/RGraph/libraries/RGraph.pie.js')

diff --git a/schall/static/RGraph/libraries/RGraph.pie.js b/schall/static/RGraph/libraries/RGraph.pie.js
new file mode 100644
index 0000000..26f688e
--- /dev/null
+++ b/schall/static/RGraph/libraries/RGraph.pie.js
@@ -0,0 +1,1042 @@
+    /**
+    * o------------------------------------------------------------------------------o
+    * | This file is part of the RGraph package - you can learn more at:             |
+    * |                                                                              |
+    * |                          http://www.rgraph.net                               |
+    * |                                                                              |
+    * | This package is licensed under the RGraph license. For all kinds of business |
+    * | purposes there is a small one-time licensing fee to pay and for non          |
+    * | commercial  purposes it is free to use. You can read the full license here:  |
+    * |                                                                              |
+    * |                      http://www.rgraph.net/LICENSE.txt                       |
+    * o------------------------------------------------------------------------------o
+    */
+    
+    if (typeof(RGraph) == 'undefined') RGraph = {};
+
+    /**
+    * The pie chart constructor
+    * 
+    * @param data array The data to be represented on the pie chart
+    */
+    RGraph.Pie = function (id, data)
+    {
+        this.id                = id;
+        this.canvas            = document.getElementById(id);
+        this.context           = this.canvas.getContext("2d");
+        this.canvas.__object__ = this;
+        this.total             = 0;
+        this.subTotal          = 0;
+        this.angles            = [];
+        this.data              = data;
+        this.properties        = [];
+        this.type              = 'pie';
+        this.isRGraph          = true;
+
+
+        /**
+        * Compatibility with older browsers
+        */
+        RGraph.OldBrowserCompat(this.context);
+
+        this.properties = {
+            'chart.colors':                 ['rgb(255,0,0)', '#ddd', 'rgb(0,255,0)', 'rgb(0,0,255)', 'pink', 'yellow', '#000'],
+            'chart.strokestyle':            '#999',
+            'chart.linewidth':              1,
+            'chart.labels':                 [],
+            'chart.labels.sticks':          false,
+            'chart.labels.sticks.length':   7,
+            'chart.labels.sticks.color':    '#aaa',
+            'chart.segments':               [],
+            'chart.gutter.left':            25,
+            'chart.gutter.right':           25,
+            'chart.gutter.top':             25,
+            'chart.gutter.bottom':          25,
+            'chart.title':                  '',
+            'chart.title.background':       null,
+            'chart.title.hpos':             null,
+            'chart.title.vpos':             0.5,
+            'chart.title.bold':             true,
+            'chart.title.font':             null,
+            'chart.shadow':                 false,
+            'chart.shadow.color':           'rgba(0,0,0,0.5)',
+            'chart.shadow.offsetx':         3,
+            'chart.shadow.offsety':         3,
+            'chart.shadow.blur':            3,
+            'chart.text.size':              10,
+            'chart.text.color':             'black',
+            'chart.text.font':              'Verdana',
+            'chart.contextmenu':            null,
+            'chart.tooltips':               [],
+            'chart.tooltips.event':         'onclick',
+            'chart.tooltips.effect':        'fade',
+            'chart.tooltips.css.class':     'RGraph_tooltip',
+            'chart.tooltips.highlight':     true,
+            'chart.highlight.style':        '3d',
+            'chart.highlight.style.2d.fill': 'rgba(255,255,255,0.5)',
+            'chart.highlight.style.2d.stroke': 'rgba(255,255,255,0)',
+            'chart.centerx':                null,
+            'chart.centery':                null,
+            'chart.radius':                 null,
+            'chart.border':                 false,
+            'chart.border.color':           'rgba(255,255,255,0.5)',
+            'chart.key':                    null,
+            'chart.key.background':         'white',
+            'chart.key.position':           'graph',
+            'chart.key.halign':             'right',
+            'chart.key.shadow':             false,
+            'chart.key.shadow.color':       '#666',
+            'chart.key.shadow.blur':        3,
+            'chart.key.shadow.offsetx':     2,
+            'chart.key.shadow.offsety':     2,
+            'chart.key.position.gutter.boxed': true,
+            'chart.key.position.x':         null,
+            'chart.key.position.y':         null,
+            'chart.key.color.shape':        'square',
+            'chart.key.rounded':            true,
+            'chart.key.linewidth':          1,
+            'chart.annotatable':            false,
+            'chart.annotate.color':         'black',
+            'chart.align':                  'center',
+            'chart.zoom.factor':            1.5,
+            'chart.zoom.fade.in':           true,
+            'chart.zoom.fade.out':          true,
+            'chart.zoom.hdir':              'right',
+            'chart.zoom.vdir':              'down',
+            'chart.zoom.frames':            25,
+            'chart.zoom.delay':             16.666,
+            'chart.zoom.shadow':            true,
+            'chart.zoom.mode':              'canvas',
+            'chart.zoom.thumbnail.width':   75,
+            'chart.zoom.thumbnail.height':  75,
+            'chart.zoom.background':        true,
+            'chart.zoom.action':            'zoom',
+            'chart.resizable':              false,
+            'chart.resize.handle.adjust':   [0,0],
+            'chart.resize.handle.background': null,
+            'chart.variant':                'pie',
+            'chart.variant.donut.color':    'white',
+            'chart.exploded':               [],
+            'chart.effect.roundrobin.multiplier': 1
+        }
+
+        /**
+        * Calculate the total
+        */
+        for (var i=0,len=data.length; i<len; i++) {
+            this.total += data[i];
+        }
+
+
+        /**
+        * Set the .getShape commonly named method
+        */
+        this.getShape = this.getSegment;
+    }
+
+
+    /**
+    * A generic setter
+    */
+    RGraph.Pie.prototype.Set = function (name, value)
+    {
+        if (name == 'chart.highlight.style.2d.color') {
+            name = 'chart.highlight.style.2d.fill';
+        }
+
+        this.properties[name] = value;
+    }
+
+
+    /**
+    * A generic getter
+    */
+    RGraph.Pie.prototype.Get = function (name)
+    {
+        if (name == 'chart.highlight.style.2d.color') {
+            name = 'chart.highlight.style.2d.fill';
+        }
+
+        return this.properties[name];
+    }
+
+
+    /**
+    * This draws the pie chart
+    */
+    RGraph.Pie.prototype.Draw = function ()
+    {
+        /**
+        * Fire the onbeforedraw event
+        */
+        RGraph.FireCustomEvent(this, 'onbeforedraw');
+
+
+        /**
+        * This is new in May 2011 and facilitates indiviual gutter settings,
+        * eg chart.gutter.left
+        */
+        this.gutterLeft   = this.Get('chart.gutter.left');
+        this.gutterRight  = this.Get('chart.gutter.right');
+        this.gutterTop    = this.Get('chart.gutter.top');
+        this.gutterBottom = this.Get('chart.gutter.bottom');
+
+        /**
+        * Reset this to an empty array
+        */
+        this.Set('chart.segments', []);
+
+        /**
+        * Clear all of this canvases event handlers (the ones installed by RGraph)
+        */
+        RGraph.ClearEventListeners(this.id);
+
+
+        this.radius           = this.Get('chart.radius') ? this.Get('chart.radius') : this.getRadius();
+        // this.centerx now defined below
+        this.centery          = ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;
+        this.subTotal         = 0;
+        this.angles           = [];
+
+        /**
+        * Allow the specification of a custom centery
+        */
+        if (typeof(this.Get('chart.centery')) == 'number') {
+            this.centery = this.Get('chart.centery');
+        }
+        
+        /**
+        * Alignment (Pie is center aligned by default) Only if centerx is not defined - donut defines the centerx
+        */
+        if (this.Get('chart.align') == 'left') {
+            this.centerx = this.radius + this.gutterLeft;
+        
+        } else if (this.Get('chart.align') == 'right') {
+            this.centerx = this.canvas.width - this.radius - this.gutterRight;
+        
+        } else {
+            this.centerx = this.canvas.width / 2;
+        }
+        
+        /**
+        * Allow the specification of a custom centerx
+        */
+        if (typeof(this.Get('chart.centerx')) == 'number') {
+            this.centerx = this.Get('chart.centerx');
+        }
+
+        /**
+        * Draw the shadow if required
+        */
+        if (this.Get('chart.shadow') && 0) {
+        
+            var offsetx = document.all ? this.Get('chart.shadow.offsetx') : 0;
+            var offsety = document.all ? this.Get('chart.shadow.offsety') : 0;
+
+            this.context.beginPath();
+            this.context.fillStyle = this.Get('chart.shadow.color');
+
+            this.context.shadowColor   = this.Get('chart.shadow.color');
+            this.context.shadowBlur    = this.Get('chart.shadow.blur');
+            this.context.shadowOffsetX = this.Get('chart.shadow.offsetx');
+            this.context.shadowOffsetY = this.Get('chart.shadow.offsety');
+            
+            this.context.arc(this.centerx + offsetx, this.centery + offsety, this.radius, 0, 6.28, 0);
+            
+            this.context.fill();
+            
+            // Now turn off the shadow
+            RGraph.NoShadow(this);
+        }
+
+        /**
+        * The total of the array of values
+        */
+        this.total = RGraph.array_sum(this.data);
+
+        for (var i=0,len=this.data.length; i<len; i++) {
+            
+            var angle = ((this.data[i] / this.total) * 360);
+
+            // Draw the segment
+            this.DrawSegment(angle,this.Get('chart.colors')[i],i == (this.data.length - 1), i);
+        }
+
+        RGraph.NoShadow(this);
+
+
+        /**
+        * Redraw the seperating lines
+        */
+        this.DrawBorders();
+
+        /**
+        * Now draw the segments again with shadow turned off. This is always performed,
+        * not just if the shadow is on.
+        */
+
+        for (var i=0; i<this.angles.length; i++) {
+    
+            this.context.beginPath();
+                this.context.strokeStyle = this.Get('chart.strokestyle');
+                this.context.fillStyle = this.Get('chart.colors')[i];
+                this.context.moveTo(this.angles[i][2], this.angles[i][3]);
+                this.context.arc(this.angles[i][2],
+                                 this.angles[i][3],
+                                 this.radius,
+                                 (this.angles[i][0] / 57.3),
+                                 (this.angles[i][1] / 57.3),
+                                 false);
+                this.context.lineTo(this.angles[i][2], this.angles[i][3]);
+            this.context.closePath();
+            this.context.fill();
+            this.context.stroke();
+        }
+
+
+
+        /**
+        * Draw label sticks
+        */
+        if (this.Get('chart.labels.sticks')) {
+            
+            this.DrawSticks();
+            
+            // Redraw the border going around the Pie chart if the stroke style is NOT white
+            var strokeStyle = this.Get('chart.strokestyle');
+            var isWhite     = strokeStyle == 'white' || strokeStyle == '#fff' || strokeStyle == '#fffffff' || strokeStyle == 'rgb(255,255,255)' || strokeStyle == 'rgba(255,255,255,0)';
+
+            if (!isWhite || (isWhite && this.Get('chart.shadow'))) {
+               // Again (?)
+              this.DrawBorders();
+           }
+        }
+
+        /**
+        * Draw the labels
+        */
+        this.DrawLabels();
+
+        /**
+        * Draw the title
+        */
+        if (this.Get('chart.align') == 'left') {
+            var centerx = this.radius + this.Get('chart.gutter.left');
+
+        } else if (this.Get('chart.align') == 'right') {
+            var centerx = RGraph.GetWidth(this) - (this.radius + this.gutterRight);
+
+        } else {
+            var centerx = null;
+        }
+
+        RGraph.DrawTitle(this.canvas,
+                         this.Get('chart.title'),
+                         (this.canvas.height / 2) - this.radius - 5,
+                         centerx,
+                         this.Get('chart.title.size') ? this.Get('chart.title.size') : this.Get('chart.text.size') + 2);
+        
+        
+        /**
+        * Setup the context menu if required
+        */
+        if (this.Get('chart.contextmenu')) {
+            RGraph.ShowContext(this);
+        }
+
+        /**
+        * Tooltips
+        */
+        if (this.Get('chart.tooltips').length) {
+
+            /**
+            * Register this object for redrawing
+            */
+            RGraph.Register(this);
+        
+            /**
+            * The onclick event
+            */
+            //this.canvas.onclick = function (e)
+            var canvas_onclick_func = function (e)
+            {
+                RGraph.HideZoomedCanvas();
+
+                e = RGraph.FixEventObject(e);
+
+                var mouseCoords = RGraph.getMouseXY(e);
+
+                var canvas  = e.target;
+                var context = canvas.getContext('2d');
+                var obj     = e.target.__object__;
+
+
+
+                /**
+                * If it's actually a donut make sure the hyp is bigger
+                * than the size of the hole in the middle
+                */
+                if (obj.Get('chart.variant') == 'donut' && Math.abs(hyp) < (obj.radius / 2)) {
+                    return;
+                }
+
+                /**
+                * The angles for each segment are stored in "angles",
+                * so go through that checking if the mouse position corresponds
+                */
+                var isDonut = obj.Get('chart.variant') == 'donut';
+                var hStyle  = obj.Get('chart.highlight.style');
+                var segment = obj.getSegment(e);
+
+                if (segment) {
+
+                    var x     = mouseCoords[0] - segment[0];
+                    var y     = mouseCoords[1] - segment[1];
+                    var theta = Math.atan(y / x); // RADIANS
+                    var hyp   = y / Math.sin(theta);
+
+
+                    if (   RGraph.Registry.Get('chart.tooltip')
+                        && segment[5] == RGraph.Registry.Get('chart.tooltip').__index__
+                        && RGraph.Registry.Get('chart.tooltip').__canvas__.__object__.id == obj.id) {
+
+                        return;
+
+                    } else {
+                        RGraph.Redraw();
+                    }
+
+
+                    if (isDonut || hStyle == '2d') {
+                        
+                        context.beginPath();
+
+                        context.strokeStyle = obj.Get('chart.highlight.style.2d.stroke');
+                        context.fillStyle   = obj.Get('chart.highlight.style.2d.fill');
+
+                        //context.moveTo(obj.centerx, obj.centery);
+
+                        context.moveTo(segment[0], segment[1]);
+                        context.arc(segment[0], segment[1], segment[2], RGraph.degrees2Radians(obj.angles[segment[5]][0]), RGraph.degrees2Radians(obj.angles[segment[5]][1]), 0);
+                        context.lineTo(segment[0], segment[1]);
+                        context.closePath();
+                        
+                        context.stroke();
+                        context.fill();
+                        
+                        //Removed 7th December 2010
+                        //context.stroke();
+
+                    } else if (hStyle == 'explode') {
+
+                        var exploded = [];
+
+                        exploded[segment[5]] = 0;
+
+                        RGraph.Registry.Set('chart.pie.exploded', obj);
+                        
+                        setTimeout(function () {var pie = RGraph.Registry.Get('chart.pie.exploded'); pie.Set('chart.exploded', exploded);RGraph.Clear(pie.canvas);pie.Draw(); exploded[segment[5]] += 7;}, 25);
+                        setTimeout(function () {var pie = RGraph.Registry.Get('chart.pie.exploded'); pie.Set('chart.exploded', exploded);RGraph.Clear(pie.canvas);pie.Draw(); exploded[segment[5]] += 7;}, 50);
+                        setTimeout(function () {var pie = RGraph.Registry.Get('chart.pie.exploded'); pie.Set('chart.exploded', exploded);RGraph.Clear(pie.canvas);pie.Draw(); exploded[segment[5]] += 7;}, 75);
+                        setTimeout(function () {var pie = RGraph.Registry.Get('chart.pie.exploded'); pie.Set('chart.exploded', exploded);RGraph.Clear(pie.canvas);pie.Draw(); exploded[segment[5]] += 7;}, 100);
+                        setTimeout(function () {var pie = RGraph.Registry.Get('chart.pie.exploded'); pie.Set('chart.exploded', exploded);RGraph.Clear(pie.canvas);pie.Draw(); exploded[segment[5]] += 7;}, 125);
+                        
+                        setTimeout(function () {RGraph.Registry.Get('chart.pie.exploded').Set('chart.exploded', []);}, 150);
+
+                    } else {
+
+                        context.lineWidth = 2;
+
+                        /**
+                        * Draw a white segment where the one that has been clicked on was
+                        */
+                        context.fillStyle = 'white';
+                        context.strokeStyle = 'white';
+                        context.beginPath();
+                        context.moveTo(segment[0], segment[1]);
+                        context.arc(segment[0], segment[1], segment[2], obj.angles[segment[5]][0] / 57.3, obj.angles[segment[5]][1] / 57.3, 0);
+                        context.stroke();
+                        context.fill();
+
+                        context.lineWidth = 1;
+
+                        context.shadowColor   = '#666';
+                        context.shadowBlur    = 3;
+                        context.shadowOffsetX = 3;
+                        context.shadowOffsetY = 3;
+
+                        // Draw the new segment
+                        context.beginPath();
+                            context.fillStyle   = obj.Get('chart.colors')[segment[5]];
+                            context.strokeStyle = obj.Get('chart.strokestyle');
+                            context.moveTo(segment[0] - 3, segment[1] - 3);
+                            context.arc(segment[0] - 3, segment[1] - 3, segment[2], RGraph.degrees2Radians(obj.angles[segment[5]][0]), RGraph.degrees2Radians(obj.angles[segment[5]][1]), 0);
+                            context.lineTo(segment[0] - 3, segment[1] - 3);
+                        context.closePath();
+                        
+                        context.stroke();
+                        context.fill();
+                        
+                        // Turn off the shadow
+                        RGraph.NoShadow(obj);
+                        
+                        /**
+                        * If a border is defined, redraw that
+                        */
+                        if (obj.Get('chart.border')) {
+                            context.beginPath();
+                            context.strokeStyle = obj.Get('chart.border.color');
+                            context.lineWidth = 5;
+                            context.arc(segment[0] - 3, segment[1] - 3, obj.radius - 2, RGraph.degrees2Radians(obj.angles[i][0]), RGraph.degrees2Radians(obj.angles[i][1]), 0);
+                            context.stroke();
+                        }
+                    }
+                        
+                    /**
+                    * If a tooltip is defined, show it
+                    */
+
+                    /**
+                    * Get the tooltip text
+                    */
+                    var text = RGraph.parseTooltipText(obj.Get('chart.tooltips'), segment[5]);
+
+                    if (text) {
+                        RGraph.Tooltip(canvas, text, e.pageX, e.pageY, segment[5]);
+                    }
+
+                    /**
+                    * Need to redraw the key?
+                    */
+                    if (obj.Get('chart.key') && obj.Get('chart.key').length && obj.Get('chart.key.position') == 'graph') {
+                        RGraph.DrawKey(obj, obj.Get('chart.key'), obj.Get('chart.colors'));
+                    }
+
+                    e.stopPropagation();
+
+                    return;
+                } else if (obj.Get('chart.tooltips.event') == 'onclick') {
+                    RGraph.Redraw();
+                }
+            }
+            var event_name = this.Get('chart.tooltips.event') == 'onmousemove' ? 'mousemove' : 'click';
+
+            this.canvas.addEventListener(event_name, canvas_onclick_func, false);
+            RGraph.AddEventListener(this.id, event_name, canvas_onclick_func);
+
+
+
+
+
+
+            /**
+            * The onmousemove event for changing the cursor
+            */
+            //this.canvas.onmousemove = function (e)
+            var canvas_onmousemove_func = function (e)
+            {
+                RGraph.HideZoomedCanvas();
+
+                e = RGraph.FixEventObject(e);
+                
+                var obj     = e.target.__object__;
+                var segment = obj.getSegment(e);
+
+                if (segment) {
+                    e.target.style.cursor = 'pointer';
+
+                    return;
+                }
+
+                /**
+                * Put the cursor back to null
+                */
+                e.target.style.cursor = 'default';
+            }
+            this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false);
+            RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func);
+
+
+
+
+
+
+
+
+
+            /**
+            * The window onclick function
+            */
+            var window_onclick_func = function (e)
+            {
+                // Taken out on 02/10/11
+                //RGraph.HideZoomedCanvas();
+
+                e = RGraph.FixEventObject(e);
+
+                RGraph.Redraw();
+
+                /**
+                * Put the cursor back to null
+                */
+                //e.target.style.cursor = 'default';
+            }
+            window.addEventListener('click', window_onclick_func, false);
+            RGraph.AddEventListener('window_' + this.id, 'click', window_onclick_func);
+        }
+
+
+        /**
+        * If a border is pecified, draw it
+        */
+        if (this.Get('chart.border')) {
+            this.context.beginPath();
+            this.context.lineWidth = 5;
+            this.context.strokeStyle = this.Get('chart.border.color');
+
+            this.context.arc(this.centerx,
+                             this.centery,
+                             this.radius - 2,
+                             0,
+                             6.28,
+                             0);
+
+            this.context.stroke();
+        }
+        
+        /**
+        * Draw the kay if desired
+        */
+        if (this.Get('chart.key') != null) {
+            //this.Set('chart.key.position', 'graph');
+            RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.colors'));
+        }
+
+
+        /**
+        * If this is actually a donut, draw a big circle in the middle
+        */
+        if (this.Get('chart.variant') == 'donut') {
+            this.context.beginPath();
+            this.context.strokeStyle = this.Get('chart.strokestyle');
+            this.context.fillStyle   = this.Get('chart.variant.donut.color');
+            this.context.arc(this.centerx, this.centery, this.radius / 2, 0, 6.28, 0);
+            this.context.stroke();
+            this.context.fill();
+        }
+        
+        RGraph.NoShadow(this);
+        
+        /**
+        * If the canvas is annotatable, do install the event handlers
+        */
+        if (this.Get('chart.annotatable')) {
+            RGraph.Annotate(this);
+        }
+        
+        /**
+        * This bit shows the mini zoom window if requested
+        */
+        if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') {
+            RGraph.ShowZoomWindow(this);
+        }
+
+        
+        /**
+        * This function enables resizing
+        */
+        if (this.Get('chart.resizable')) {
+            RGraph.AllowResizing(this);
+        }
+        
+        /**
+        * Fire the RGraph ondraw event
+        */
+        RGraph.FireCustomEvent(this, 'ondraw');
+    }
+
+
+    /**
+    * Draws a single segment of the pie chart
+    * 
+    * @param int degrees The number of degrees for this segment
+    */
+    RGraph.Pie.prototype.DrawSegment = function (degrees, color, last, index)
+    {
+        var context  = this.context;
+        var canvas   = this.canvas;
+        var subTotal = this.subTotal;
+            degrees  = degrees * this.Get('chart.effect.roundrobin.multiplier');
+
+        context.beginPath();
+
+            context.fillStyle   = color;
+            context.strokeStyle = this.Get('chart.strokestyle');
+            context.lineWidth   = 0;
+            
+            if (this.Get('chart.shadow')) {
+                RGraph.SetShadow(this, this.Get('chart.shadow.color'),this.Get('chart.shadow.offsetx'), this.Get('chart.shadow.offsety'), this.Get('chart.shadow.blur'));
+            }
+
+            /**
+            * Exploded segments
+            */
+            if ( (typeof(this.Get('chart.exploded')) == 'object' && this.Get('chart.exploded')[index] > 0) || typeof(this.Get('chart.exploded')) == 'number') {
+                var explosion = typeof(this.Get('chart.exploded')) == 'number' ? this.Get('chart.exploded') : this.Get('chart.exploded')[index];
+                var x         = 0;
+                var y         = 0;
+                var h         = explosion;
+                var t         = ((subTotal + (degrees / 2)) / (360/6.2830)) - 1.57;
+                var x         = (Math.cos(t) * explosion);
+                var y         = (Math.sin(t) * explosion);
+            
+                this.context.moveTo(this.centerx + x, this.centery + y);
+            } else {
+                var x = 0;
+                var y = 0;
+            }
+            
+            /**
+            * Calculate the angles
+            */
+            var startAngle = ((subTotal / 57.3)) - 1.57;
+            var endAngle   = (((subTotal + degrees) / 57.3)) - 1.57;
+
+            context.arc(this.centerx + x,
+                        this.centery + y,
+                        this.radius,
+                        startAngle,
+                        endAngle,
+                        0);
+
+            context.lineTo(this.centerx + x, this.centery + y);
+
+            // Keep hold of the angles
+            this.angles.push([subTotal - 90, subTotal + degrees - 90, this.centerx + x, this.centery + y])
+        this.context.closePath();
+        
+
+        
+        //this.context.stroke();
+        this.context.fill();
+
+        /**
+        * Calculate the segment angle
+        */
+        this.Get('chart.segments').push([subTotal, subTotal + degrees]);
+        this.subTotal += degrees;
+    }
+
+    /**
+    * Draws the graphs labels
+    */
+    RGraph.Pie.prototype.DrawLabels = function ()
+    {
+        var hAlignment = 'left';
+        var vAlignment = 'center';
+        var labels     = this.Get('chart.labels');
+        var context    = this.context;
+
+        /**
+        * Turn the shadow off
+        */
+        RGraph.NoShadow(this);
+        
+        context.fillStyle = 'black';
+        context.beginPath();
+
+        /**
+        * Draw the key (ie. the labels)
+        */
+        if (labels && labels.length) {
+
+            var text_size = this.Get('chart.text.size');
+
+            for (i=0; i<labels.length; ++i) {
+            
+                /**
+                * T|his ensures that if we're given too many labels, that we don't get an error
+                */
+                if (typeof(this.Get('chart.segments')[i]) == 'undefined') {
+                    continue;
+                }
+
+                // Move to the centre
+                context.moveTo(this.centerx,this.centery);
+                
+                var a = this.Get('chart.segments')[i][0] + ((this.Get('chart.segments')[i][1] - this.Get('chart.segments')[i][0]) / 2) - 90;
+
+                /**
+                * Alignment
+                */
+                if (a < 90) {
+                    hAlignment = 'left';
+                    vAlignment = 'center';
+                } else if (a < 180) {
+                    hAlignment = 'right';
+                    vAlignment = 'center';
+                } else if (a < 270) {
+                    hAlignment = 'right';
+                    vAlignment = 'center';
+                } else if (a < 360) {
+                    hAlignment = 'left';
+                    vAlignment = 'center';
+                }
+
+var angle = ((this.angles[i][1] - this.angles[i][0]) / 2) + this.angles[i][0];
+                /**
+                * Handle the additional "explosion" offset
+                */
+                if (typeof(this.Get('chart.exploded')) == 'object' && this.Get('chart.exploded')[i] || typeof(this.Get('chart.exploded')) == 'number') {
+
+                    var t = ((this.angles[i][1] - this.angles[i][0]) / 2) / (360/6.2830);
+                    var seperation = typeof(this.Get('chart.exploded')) == 'number' ? this.Get('chart.exploded') : this.Get('chart.exploded')[i];
+
+                    // Adjust the angles
+                    var explosion_offsetx = (Math.cos(angle / 57.29) * seperation);
+                    var explosion_offsety = (Math.sin(angle / 57.29) * seperation);
+                } else {
+                    var explosion_offsetx = 0;
+                    var explosion_offsety = 0;
+                }
+                
+                /**
+                * Allow for the label sticks
+                */
+                if (this.Get('chart.labels.sticks')) {
+                    explosion_offsetx += (Math.cos(angle / 57.29) * this.Get('chart.labels.sticks.length'));
+                    explosion_offsety += (Math.sin(angle / 57.29) * this.Get('chart.labels.sticks.length'));
+                }
+
+
+                context.fillStyle = this.Get('chart.text.color');
+
+                RGraph.Text(context,
+                            this.Get('chart.text.font'),
+                            text_size,
+                            this.centerx + explosion_offsetx + ((this.radius + 10)* Math.cos(a / 57.3)) + (this.Get('chart.labels.sticks') ? (a < 90 || a > 270 ? 2 : -2) : 0),
+                            this.centery + explosion_offsety + (((this.radius + 10) * Math.sin(a / 57.3))),
+                            labels[i],
+                            vAlignment,
+                            hAlignment);
+            }
+            
+            context.fill();
+        }
+    }
+
+
+    /**
+    * This function draws the pie chart sticks (for the labels)
+    */
+    RGraph.Pie.prototype.DrawSticks = function ()
+    {
+        var context  = this.context;
+        var offset   = this.Get('chart.linewidth') / 2;
+        var exploded = this.Get('chart.exploded');
+        var sticks   = this.Get('chart.labels.sticks');
+
+        for (var i=0; i<this.angles.length; ++i) {
+
+            // This allows the chart.labels.sticks to be an array as well as a boolean
+            if (typeof(sticks) == 'object' && !sticks[i]) {
+                continue;
+            }
+
+            var degrees = this.angles[i][1] - this.angles[i][0];
+
+            context.beginPath();
+            context.strokeStyle = this.Get('chart.labels.sticks.color');
+            context.lineWidth   = 1;
+
+            var midpoint = (this.angles[i][0] + (degrees / 2)) / 57.3;
+
+            if (typeof(exploded) == 'object' && exploded[i]) {
+                var extra = exploded[i];
+            } else if (typeof(exploded) == 'number') {
+                var extra = exploded;
+            } else {
+                var extra = 0;
+            }
+
+            context.lineJoin = 'round';
+            context.lineWidth = 1;
+
+            context.arc(this.centerx,
+                        this.centery,
+                        this.radius + this.Get('chart.labels.sticks.length') + extra,
+                        midpoint,
+                        midpoint + 0.001,
+                        0);
+            context.arc(this.centerx,
+                        this.centery,
+                        this.radius + extra,
+                        midpoint,
+                        midpoint + 0.001,
+                        0);
+
+            context.stroke();
+        }
+    }
+
+
+    /**
+    * The (now Pie chart specific) getSegment function
+    * 
+    * @param object e The event object
+    */
+    RGraph.Pie.prototype.getSegment = function (e)
+    {
+        RGraph.FixEventObject(e);
+
+        // The optional arg provides a way of allowing some accuracy (pixels)
+        var accuracy = arguments[1] ? arguments[1] : 0;
+
+        var obj         = e.target.__object__;
+        var canvas      = obj.canvas;
+        var context     = obj.context;
+        var mouseCoords = RGraph.getMouseXY(e);
+        var r           = obj.radius;
+        var angles      = obj.angles;
+        var ret         = [];
+
+        for (var i=0; i<angles.length; ++i) {
+
+            var x     = mouseCoords[0] - angles[i][2];
+            var y     = mouseCoords[1] - angles[i][3];
+            var theta = Math.atan(y / x); // RADIANS
+            var hyp   = y / Math.sin(theta);
+            var hyp   = (hyp < 0) ? hyp + accuracy : hyp - accuracy;
+            // Put theta in DEGREES
+            theta *= 57.3
+
+            /**
+            * Account for the correct quadrant
+            */
+            if (x < 0 && y >= 0) {
+                theta += 180;
+            } else if (x < 0 && y < 0) {
+                theta += 180;
+            }
+
+            if (theta > 360) {
+                theta -= 360;
+            }
+
+            if (theta >= angles[i][0] && theta < angles[i][1]) {
+
+                hyp = Math.abs(hyp);
+
+                if (!hyp || (obj.radius && hyp > obj.radius) ) {
+                    return null;
+                }
+
+                if (obj.type == 'pie' && obj.Get('chart.variant') == 'donut' && (hyp > obj.radius || hyp < (obj.radius / 2) ) ) {
+                    return null;
+                }
+
+                ret[0] = angles[i][2];
+                ret[1] = angles[i][3];
+                ret[2] = (obj.type == 'rose') ? angles[i][2] : obj.radius;
+                ret[3] = angles[i][0];
+                ret[4] = angles[i][1];
+                ret[5] = i;
+
+
+                
+                if (ret[3] < 0) ret[3] += 360;
+                if (ret[4] > 360) ret[4] -= 360;
+
+                return ret;
+            }
+        }
+        
+        return null;
+    }
+
+
+    RGraph.Pie.prototype.DrawBorders = function ()
+    {
+        if (this.Get('chart.linewidth') > 0) {
+
+            this.context.lineWidth = this.Get('chart.linewidth');
+            this.context.strokeStyle = this.Get('chart.strokestyle');
+
+            for (var i=0,len=this.angles.length; i<len; ++i) {
+                this.context.beginPath();
+                    this.context.moveTo(this.angles[i][2], this.angles[i][3]);
+                    this.context.arc(this.angles[i][2],
+                                     this.angles[i][3],
+                                     this.radius,
+                                     ((this.angles[i][0] / 57.3)),
+                                     ((this.angles[i][0] + 0.01) / 57.3),
+                                     0);
+                    this.context.arc(this.angles[i][2],
+                                     this.angles[i][3],
+                                     this.radius,
+                                     ((this.angles[i][0] / 57.3)),
+                                     this.angles[i][1] / 57.3,
+                                     0);
+                this.context.closePath();
+                
+                this.context.stroke();
+            }
+        }
+    }
+
+
+    /**
+    * Returns the radius of the pie chart
+    */
+    RGraph.Pie.prototype.getRadius = function ()
+    {
+        return Math.min(this.canvas.height - this.gutterTop - this.gutterBottom, this.canvas.width - this.gutterLeft - this.gutterRight) / 2;
+    }
+
+
+    /**
+    * A programmatic explode function
+    * 
+    * @param object obj   The chart object
+    * @param number index The zero-indexed number of the segment
+    * @param number size  The size (in pixels) of the explosion
+    */
+    RGraph.Pie.prototype.Explode = function (index, size)
+    {
+        if (this.Get('chart.exploded') == 0) {
+            this.Set('chart.exploded', []);
+        }
+
+        var obj = this;
+
+        for (var i=0; i<size; ++i) {
+            setTimeout(
+                function ()
+                {
+                    var exploded = obj.Get('chart.exploded');
+                    var value = typeof(exploded[index]) == 'number' ? exploded[index] : 0;
+                    exploded[index] = value + 1;
+                    obj.Set('chart.exploded', exploded);
+                    RGraph.Clear(obj.canvas);
+                    obj.Draw();
+                }, i * 16.666);
+        }
+        
+        /**
+        * Now set the property accordingly
+        */
+        setTimeout(
+            function ()
+            {
+                obj.Set('chart.exploded', exploded);
+            }, i * 16.666
+        )
+
+        //var Reset = function ()
+        //{
+        //    pie.Set('chart.exploded', []);
+        //    RGraph.Clear(pie.canvas);
+        //    pie.Draw();
+        //}
+        //window.addEventListener('click', Reset, false);
+    }
\ No newline at end of file
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