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+ /**
+ * 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 odometer constructor. Pass it the ID of the canvas tag, the start value of the odo,
+ * the end value, and the value that the pointer should point to.
+ *
+ * @param string id The ID of the canvas tag
+ * @param int start The start value of the Odo
+ * @param int end The end value of the odo
+ * @param int value The indicated value (what the needle points to)
+ */
+ RGraph.Odometer = function (id, start, end, value)
+ {
+ this.id = id
+ this.canvas = document.getElementById(id);
+ this.context = this.canvas.getContext('2d');
+ this.canvas.__object__ = this;
+ this.type = 'odo';
+ this.isRGraph = true;
+ this.start = start;
+ this.end = end;
+ this.value = value;
+ this.currentValue = null;
+
+
+ /**
+ * Compatibility with older browsers
+ */
+ RGraph.OldBrowserCompat(this.context);
+
+
+ this.properties = {
+ 'chart.radius': null,
+ 'chart.value.text': false,
+ 'chart.value.text.decimals': 0,
+ 'chart.needle.color': 'black',
+ 'chart.needle.width': 2,
+ 'chart.needle.head': true,
+ 'chart.needle.tail': true,
+ 'chart.needle.type': 'pointer',
+ 'chart.needle.extra': [],
+ 'chart.needle.triangle.border': '#aaa',
+ 'chart.text.size': 10,
+ 'chart.text.color': 'black',
+ 'chart.text.font': 'Verdana',
+ 'chart.green.max': end * 0.75,
+ 'chart.red.min': end * 0.9,
+ 'chart.green.color': 'green',
+ 'chart.yellow.color': 'yellow',
+ 'chart.red.color': 'red',
+ 'chart.green.solid': false,
+ 'chart.yellow.solid': false,
+ 'chart.red.solid': false,
+ 'chart.label.area': 35,
+ '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': null,
+ 'chart.title.font': null,
+ 'chart.title.bold': true,
+ 'chart.contextmenu': null,
+ 'chart.linewidth': 1,
+ 'chart.shadow.inner': false,
+ 'chart.shadow.inner.color': 'black',
+ 'chart.shadow.inner.offsetx': 3,
+ 'chart.shadow.inner.offsety': 3,
+ 'chart.shadow.inner.blur': 6,
+ 'chart.shadow.outer': false,
+ 'chart.shadow.outer.color': '#666',
+ 'chart.shadow.outer.offsetx': 0,
+ 'chart.shadow.outer.offsety': 0,
+ 'chart.shadow.outer.blur': 15,
+ 'chart.annotatable': false,
+ 'chart.annotate.color': 'black',
+ 'chart.scale.decimals': 0,
+ '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.units.pre': '',
+ 'chart.units.post': '',
+ 'chart.border': false,
+ 'chart.border.color1': '#BEBCB0',
+ 'chart.border.color2': '#F0EFEA',
+ 'chart.border.color3': '#BEBCB0',
+ 'chart.tickmarks.highlighted': false,
+ 'chart.zerostart': false,
+ 'chart.labels': null,
+ 'chart.units.pre': '',
+ 'chart.units.post': '',
+ 'chart.value.units.pre': '',
+ 'chart.value.units.post': '',
+ 'chart.key': [],
+ 'chart.key.background': 'white',
+ 'chart.key.position': 'graph',
+ '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.halign': 'right',
+ 'chart.key.color.shape': 'square',
+ 'chart.key.rounded': true,
+ 'chart.key.text.size': 10,
+ }
+ }
+
+
+ /**
+ * A peudo setter
+ *
+ * @param name string The name of the property to set
+ * @param value mixed The value of the property
+ */
+ RGraph.Odometer.prototype.Set = function (name, value)
+ {
+ if (name == 'chart.needle.style') {
+ alert('[RGRAPH] The RGraph property chart.needle.style has changed to chart.needle.color');
+ }
+
+ if (name == 'chart.needle.thickness') {
+ name = 'chart.needle.width';
+ }
+
+ if (name == 'chart.value') {
+ this.value = value;
+ return;
+ }
+
+ this.properties[name.toLowerCase()] = value;
+ }
+
+
+ /**
+ * A getter
+ *
+ * @param name string The name of the property to get
+ */
+ RGraph.Odometer.prototype.Get = function (name)
+ {
+ if (name == 'chart.value') {
+ return this.value;
+ }
+
+ return this.properties[name.toLowerCase()];
+ }
+
+
+ /**
+ * Draws the odometer
+ */
+ RGraph.Odometer.prototype.Draw = function ()
+ {
+ /**
+ * Fire the onbeforedraw event
+ */
+ RGraph.FireCustomEvent(this, 'onbeforedraw');
+
+ /**
+ * Clear all of this canvases event handlers (the ones installed by RGraph)
+ */
+ RGraph.ClearEventListeners(this.id);
+
+ /**
+ * Set the current value
+ */
+ this.currentValue = this.value;
+
+ /**
+ * No longer allow values outside the range of the Odo
+ */
+ if (this.value > this.end) {
+ this.value = this.end;
+ }
+
+ if (this.value < this.start) {
+ this.value = this.start;
+ }
+
+ /**
+ * 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');
+
+ // Work out a few things
+ this.radius = Math.min((RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight) / 2, (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2) - (this.Get('chart.border') ? 25 : 0);
+ this.diameter = 2 * this.radius;
+ this.centerx = this.canvas.width / 2;
+ this.centery = this.canvas.height / 2;
+ this.range = this.end - this.start;
+
+
+ if (typeof(this.Get('chart.radius')) == 'number') {
+ this.radius = this.Get('chart.radius');
+ }
+
+ /**
+ * Move the centerx if the key is defined
+ */
+ if (this.Get('chart.key').length > 0 && this.canvas.width > this.canvas.height) {
+ this.centerx = 5 + this.radius;
+ }
+
+ this.context.lineWidth = this.Get('chart.linewidth');
+
+ // Draw the background
+ this.DrawBackground();
+
+ // And lastly, draw the labels
+ this.DrawLabels();
+
+ // Draw the needle
+ this.DrawNeedle(this.value, this.Get('chart.needle.color'));
+
+ /**
+ * Draw any extra needles
+ */
+ if (this.Get('chart.needle.extra').length > 0) {
+ for (var i=0; i<this.Get('chart.needle.extra').length; ++i) {
+ var needle = this.Get('chart.needle.extra')[i];
+ this.DrawNeedle(needle[0], needle[1], needle[2]);
+ }
+ }
+
+ /**
+ * Draw the key if requested
+ */
+ if (this.Get('chart.key').length > 0) {
+ // Build a colors array out of the needle colors
+ var colors = [this.Get('chart.needle.color')];
+
+ if (this.Get('chart.needle.extra').length > 0) {
+ for (var i=0; i<this.Get('chart.needle.extra').length; ++i) {
+ var needle = this.Get('chart.needle.extra')[i];
+ colors.push(needle[1]);
+ }
+ }
+
+ RGraph.DrawKey(this, this.Get('chart.key'), colors);
+ }
+
+
+ /**
+ * Setup the context menu if required
+ */
+ if (this.Get('chart.contextmenu')) {
+ RGraph.ShowContext(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 the background
+ */
+ RGraph.Odometer.prototype.DrawBackground = function ()
+ {
+ this.context.beginPath();
+
+ /**
+ * Turn on the shadow if need be
+ */
+ if (this.Get('chart.shadow.outer')) {
+ RGraph.SetShadow(this, this.Get('chart.shadow.outer.color'), this.Get('chart.shadow.outer.offsetx'), this.Get('chart.shadow.outer.offsety'), this.Get('chart.shadow.outer.blur'));
+ }
+
+ var backgroundColor = '#eee';
+
+ // Draw the grey border
+ this.context.fillStyle = backgroundColor;
+ this.context.arc(this.centerx, this.centery, this.radius, 0.0001, 6.28, false);
+ this.context.fill();
+
+ /**
+ * Turn off the shadow
+ */
+ RGraph.NoShadow(this);
+
+
+ // Draw a circle
+ this.context.strokeStyle = '#666';
+ this.context.arc(this.centerx, this.centery, this.radius, 0, 6.28, false);
+
+ // Now draw a big white circle to make the lines appear as tick marks
+ // This is solely for Chrome
+ this.context.fillStyle = backgroundColor;
+ this.context.arc(this.centerx, this.centery, this.radius, 0, 6.28, false);
+ this.context.fill();
+
+ /**
+ * Draw more tickmarks
+ */
+ this.context.beginPath();
+ this.context.strokeStyle = '#bbb';
+
+ for (var i=0; i<=360; i+=3) {
+ this.context.arc(this.centerx, this.centery, this.radius, 0, RGraph.degrees2Radians(i), false);
+ this.context.lineTo(this.centerx, this.centery);
+ }
+ this.context.stroke();
+
+ this.context.beginPath();
+ this.context.lineWidth = 1;
+ this.context.strokeStyle = 'black';
+
+ // Now draw a big white circle to make the lines appear as tick marks
+ this.context.fillStyle = backgroundColor;
+ this.context.strokeStyle = backgroundColor;
+ this.context.arc(this.centerx, this.centery, this.radius - 5, 0, 6.28, false);
+ this.context.fill();
+ this.context.stroke();
+
+ // Gray lines at 18 degree intervals
+ this.context.beginPath();
+ this.context.strokeStyle = '#ddd';
+ for (var i=0; i<360; i+=18) {
+ this.context.arc(this.centerx, this.centery, this.radius, 0, RGraph.degrees2Radians(i), false);
+ this.context.lineTo(this.centerx, this.centery);
+ }
+ this.context.stroke();
+
+ // Redraw the outer circle
+ this.context.beginPath();
+ this.context.strokeStyle = 'black';
+ this.context.arc(this.centerx, this.centery, this.radius, 0, 6.2830, false);
+ this.context.stroke();
+
+ /**
+ * Now draw the center bits shadow if need be
+ */
+ if (this.Get('chart.shadow.inner')) {
+ this.context.beginPath();
+ RGraph.SetShadow(this, this.Get('chart.shadow.inner.color'), this.Get('chart.shadow.inner.offsetx'), this.Get('chart.shadow.inner.offsety'), this.Get('chart.shadow.inner.blur'));
+ this.context.arc(this.centerx, this.centery, this.radius - this.Get('chart.label.area'), 0, 6.28, 0);
+ this.context.fill();
+ this.context.stroke();
+
+ /**
+ * Turn off the shadow
+ */
+ RGraph.NoShadow(this);
+ }
+
+ /*******************************************************
+ * Draw the green area
+ *******************************************************/
+ if (this.Get('chart.green.solid')) {
+ var greengrad = this.Get('chart.green.color');
+
+ } else {
+ var greengrad = this.context.createRadialGradient(this.centerx,this.centery,0,this.centerx,this.centery,this.radius);
+ greengrad.addColorStop(0, 'white');
+ greengrad.addColorStop(1, this.Get('chart.green.color'));
+ }
+
+ // Draw the "tick highlight"
+ if (this.Get('chart.tickmarks.highlighted')) {
+ this.context.beginPath();
+ this.context.lineWidth = 5;
+ this.context.strokeStyle = greengrad;
+ this.context.arc(this.centerx, this.centery, this.radius - 2.5,
+
+ -1.57,
+ (((this.Get('chart.green.max') - this.start)/ (this.end - this.start)) * 6.2830) - 1.57,
+ 0);
+
+ this.context.stroke();
+
+ this.context.lineWidth = 1;
+ }
+
+ this.context.beginPath();
+ this.context.fillStyle = greengrad;
+ this.context.arc(
+ this.centerx,
+ this.centery,
+ this.radius - this.Get('chart.label.area'),
+ -1.57,
+ (((this.Get('chart.green.max') - this.start)/ (this.end - this.start)) * 6.2830) - 1.57,
+ false
+ );
+ this.context.lineTo(this.centerx, this.centery);
+ this.context.closePath();
+ this.context.fill();
+
+
+ /*******************************************************
+ * Draw the yellow area
+ *******************************************************/
+ if (this.Get('chart.yellow.solid')) {
+ var yellowgrad = this.Get('chart.yellow.color');
+
+ } else {
+ var yellowgrad = this.context.createRadialGradient(this.centerx,this.centery,0,this.centerx,this.centery,this.radius);
+ yellowgrad.addColorStop(0, 'white');
+ yellowgrad.addColorStop(1, this.Get('chart.yellow.color'));
+ }
+
+ // Draw the "tick highlight"
+ if (this.Get('chart.tickmarks.highlighted')) {
+ this.context.beginPath();
+ this.context.lineWidth = 5;
+ this.context.strokeStyle = yellowgrad;
+ this.context.arc(this.centerx, this.centery, this.radius - 2.5, (
+
+ ((this.Get('chart.green.max') - this.start) / (this.end - this.start)) * 6.2830) - 1.57,
+ (((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57,
+ 0);
+
+ this.context.stroke();
+
+ this.context.lineWidth = 1;
+ }
+
+ this.context.beginPath();
+ this.context.fillStyle = yellowgrad;
+ this.context.arc(
+ this.centerx,
+ this.centery,
+ this.radius - this.Get('chart.label.area'),
+ ( ((this.Get('chart.green.max') -this.start) / (this.end - this.start)) * 6.2830) - 1.57,
+ ( ((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57,
+ false
+ );
+ this.context.lineTo(this.centerx, this.centery);
+ this.context.closePath();
+ this.context.fill();
+
+ /*******************************************************
+ * Draw the red area
+ *******************************************************/
+ if (this.Get('chart.red.solid')) {
+ var redgrad = this.Get('chart.red.color');
+
+ } else {
+ var redgrad = this.context.createRadialGradient(this.centerx,
+ this.centery,
+ 0,
+ this.centerx,
+ this.centery,
+ this.radius);
+ redgrad.addColorStop(0, 'white');
+ redgrad.addColorStop(1, this.Get('chart.red.color'));
+ }
+
+
+ // Draw the "tick highlight"
+ if (this.Get('chart.tickmarks.highlighted')) {
+ this.context.beginPath();
+ this.context.lineWidth = 5;
+ this.context.strokeStyle = redgrad;
+ this.context.arc(this.centerx, this.centery, this.radius - 2.5,(((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57,(2 * Math.PI) - (0.5 * Math.PI),0);
+ this.context.stroke();
+
+ this.context.lineWidth = 1;
+ }
+
+ this.context.beginPath();
+ this.context.fillStyle = redgrad;
+ this.context.strokeStyle = redgrad;
+ this.context.arc(
+ this.centerx,
+ this.centery,
+ this.radius - this.Get('chart.label.area'),
+ (((this.Get('chart.red.min') - this.start) / (this.end - this.start)) * 6.2830) - 1.57,
+ 6.2830 - (0.25 * 6.2830),
+ false
+ );
+ this.context.lineTo(this.centerx, this.centery);
+ this.context.closePath();
+ this.context.fill();
+
+
+ /**
+ * Draw the thick border
+ */
+
+ if (this.Get('chart.border')) {
+
+
+ var grad = this.context.createRadialGradient(this.centerx, this.centery, this.radius, this.centerx, this.centery, this.radius + 20);
+ grad.addColorStop(0, this.Get('chart.border.color1'));
+ grad.addColorStop(0.5, this.Get('chart.border.color2'));
+ grad.addColorStop(1, this.Get('chart.border.color3'));
+
+
+ this.context.beginPath();
+ this.context.fillStyle = grad;
+ this.context.strokeStyle = 'rgba(0,0,0,0)'
+ this.context.lineWidth = 0.001;
+ this.context.arc(this.centerx, this.centery, this.radius + 20, 0, 6.2830, 0);
+ this.context.arc(this.centerx, this.centery, this.radius - 2, 6.2830, 0, 1);
+ this.context.fill();
+ }
+
+ // Put the linewidth back to what it was
+ this.context.lineWidth = this.Get('chart.linewidth');
+
+
+ /**
+ * Draw the title if specified
+ */
+ if (this.Get('chart.title')) {
+ RGraph.DrawTitle(this.canvas,
+ this.Get('chart.title'),
+ this.centery - this.radius,
+ null,
+ this.Get('chart.title.size') ? this.Get('chart.title.size') : this.Get('chart.text.size') + 2);
+ }
+
+
+ // Draw the big tick marks
+ if (!this.Get('chart.tickmarks.highlighted')) {
+ for (var i=18; i<=360; i+=36) {
+ this.context.beginPath();
+ this.context.strokeStyle = '#999';
+ this.context.lineWidth = 2;
+ this.context.arc(this.centerx, this.centery, this.radius - 1, RGraph.degrees2Radians(i), RGraph.degrees2Radians(i+0.01), false);
+ this.context.arc(this.centerx, this.centery, this.radius - 7, RGraph.degrees2Radians(i), RGraph.degrees2Radians(i+0.01), false);
+ this.context.stroke();
+ }
+ }
+ }
+
+
+ /**
+ * Draws the needle of the odometer
+ *
+ * @param number value The value to represent
+ * @param string color The color of the needle
+ * @param number The OPTIONAL length of the needle
+ */
+ RGraph.Odometer.prototype.DrawNeedle = function (value, color)
+ {
+ // The optional length of the needle
+ var length = arguments[2] ? arguments[2] : this.radius - this.Get('chart.label.area');
+
+ // ===== First draw a grey background circle =====
+
+ this.context.fillStyle = '#999';
+
+ this.context.beginPath();
+ this.context.moveTo(this.centerx, this.centery);
+ this.context.arc(this.centerx, this.centery, 10, 0, 6.28, false);
+ this.context.fill();
+ this.context.closePath();
+
+ this.context.fill();
+
+ // ===============================================
+
+ this.context.fillStyle = color
+ this.context.strokeStyle = '#666';
+
+ // Draw the centre bit
+ this.context.beginPath();
+ this.context.moveTo(this.centerx, this.centery);
+ this.context.arc(this.centerx, this.centery, 8, 0, 6.28, false);
+ this.context.fill();
+ this.context.closePath();
+
+ this.context.stroke();
+ this.context.fill();
+
+ if (this.Get('chart.needle.type') == 'pointer') {
+
+ this.context.strokeStyle = color;
+ this.context.lineWidth = this.Get('chart.needle.width');
+ this.context.lineCap = 'round';
+ this.context.lineJoin = 'round';
+
+ // Draw the needle
+ this.context.beginPath();
+ // The trailing bit on the opposite side of the dial
+ this.context.beginPath();
+ this.context.moveTo(this.centerx, this.centery);
+
+ if (this.Get('chart.needle.tail')) {
+
+ this.context.arc(this.centerx,
+ this.centery,
+ 20,
+ (((value / this.range) * 360) + 90) / 57.3,
+ (((value / this.range) * 360) + 90 + 0.01) / 57.3, // The 0.01 avoids a bug in ExCanvas and Chrome 6
+ false
+ );
+ }
+
+ // Draw the long bit on the opposite side
+ this.context.arc(this.centerx,
+ this.centery,
+ length - 10,
+ (((value / this.range) * 360) - 90) / 57.3,
+ (((value / this.range) * 360) - 90 + 0.1 ) / 57.3, // The 0.1 avoids a bug in ExCanvas and Chrome 6
+ false
+ );
+ this.context.closePath();
+
+ //this.context.stroke();
+ //this.context.fill();
+
+
+ } else if (this.Get('chart.needle.type') == 'triangle') {
+
+ this.context.lineWidth = 0.01;
+ this.context.lineEnd = 'square';
+ this.context.lineJoin = 'miter';
+
+ /**
+ * This draws the version of the pointer that becomes the border
+ */
+ this.context.beginPath();
+ this.context.fillStyle = this.Get('chart.needle.triangle.border');
+ this.context.arc(this.centerx, this.centery, 11, (((value / this.range) * 360)) / 57.3, ((((value / this.range) * 360)) + 0.01) / 57.3, 0);
+ this.context.arc(this.centerx, this.centery, 11, (((value / this.range) * 360) + 180) / 57.3, ((((value / this.range) * 360) + 180) + 0.01)/ 57.3, 0);
+ this.context.arc(this.centerx, this.centery, length - 5, (((value / this.range) * 360) - 90) / 57.3, ((((value / this.range) * 360) - 90) / 57.3) + 0.01, 0);
+ this.context.closePath();
+ this.context.fill();
+
+ this.context.beginPath();
+ this.context.arc(this.centerx, this.centery, 15, 0, 6.28, 0);
+ this.context.closePath();
+ this.context.fill();
+
+ // This draws the pointer
+ this.context.beginPath();
+ this.context.strokeStyle = 'black';
+ this.context.fillStyle = color;
+ this.context.arc(this.centerx, this.centery, 7, (((value / this.range) * 360)) / 57.3, ((((value / this.range) * 360)) + 0.01) / 57.3, 0);
+ this.context.arc(this.centerx, this.centery, 7, (((value / this.range) * 360) + 180) / 57.3, ((((value / this.range) * 360) + 180) + 0.01)/ 57.3, 0);
+ this.context.arc(this.centerx, this.centery, length - 13, (((value / this.range) * 360) - 90) / 57.3, ((((value / this.range) * 360) - 90) / 57.3) + 0.01, 0);
+ this.context.closePath();
+ this.context.stroke();
+ this.context.fill();
+
+ /**
+ * This is here to accomodate the MSIE/ExCanvas combo
+ */
+ this.context.beginPath();
+ this.context.arc(this.centerx, this.centery, 7, 0, 6.28, 0);
+ this.context.closePath();
+ this.context.fill();
+ }
+
+
+ this.context.stroke();
+ this.context.fill();
+
+ // Draw the mini center circle
+ this.context.beginPath();
+ this.context.fillStyle = color;
+ this.context.arc(this.centerx, this.centery, this.Get('chart.needle.type') == 'pointer' ? 7 : 12, 0.01, 6.2830, false);
+ this.context.fill();
+
+ // This draws the arrow at the end of the line
+ if (this.Get('chart.needle.head') && this.Get('chart.needle.type') == 'pointer') {
+ this.context.lineWidth = 1;
+ this.context.fillStyle = color;
+
+ // round, bevel, miter
+ this.context.lineJoin = 'miter';
+ this.context.lineCap = 'butt';
+
+ this.context.beginPath();
+ this.context.arc(this.centerx, this.centery, length - 5, (((value / this.range) * 360) - 90) / 57.3, (((value / this.range) * 360) - 90 + 0.1) / 57.3, false);
+
+ this.context.arc(this.centerx,
+ this.centery,
+ length - 20,
+ RGraph.degrees2Radians( ((value / this.range) * 360) - (length < 60 ? 80 : 85) ),
+ RGraph.degrees2Radians( ((value / this.range) * 360) - (length < 60 ? 100 : 95) ),
+ 1);
+ this.context.closePath();
+
+ this.context.fill();
+ //this.context.stroke();
+ }
+
+ /**
+ * Draw a white circle at the centre
+ */
+ this.context.beginPath();
+ this.context.fillStyle = 'gray';
+ this.context.moveTo(this.centerx, this.centery);
+ this.context.arc(this.centerx,this.centery,2,0,6.2795,false);
+ this.context.closePath();
+
+ this.context.fill();
+ }
+
+ /**
+ * Draws the labels for the Odo
+ */
+ RGraph.Odometer.prototype.DrawLabels = function ()
+ {
+ var context = this.context;
+ var size = this.Get('chart.text.size');
+ var font = this.Get('chart.text.font');
+ var centerx = this.centerx;
+ var centery = this.centery;
+ var r = this.radius - (this.Get('chart.label.area') / 2);
+ var start = this.start;
+ var end = this.end;
+ var decimals = this.Get('chart.scale.decimals');
+ var labels = this.Get('chart.labels');
+ var units_pre = this.Get('chart.units.pre');
+ var units_post = this.Get('chart.units.post');
+
+ context.beginPath();
+ context.fillStyle = this.Get('chart.text.color');
+
+ /**
+ * If label are specified, use those
+ */
+ if (labels) {
+ for (var i=0; i<labels.length; ++i) {
+
+ RGraph.Text(context,
+ font,
+ size,
+ centerx + (Math.cos(((i / labels.length) * 6.28) - 1.57) * (this.radius - (this.Get('chart.label.area') / 2) ) ), // Sin A = Opp / Hyp
+ centery + (Math.sin(((i / labels.length) * 6.28) - 1.57) * (this.radius - (this.Get('chart.label.area') / 2) ) ), // Cos A = Adj / Hyp
+ String(units_pre + labels[i] + units_post),
+ 'center',
+ 'center');
+ }
+
+ /**
+ * If not, use the maximum value
+ */
+ } else {
+ RGraph.Text(context, font, size, centerx + (0.588 * r ), centery - (0.809 * r ), String(units_pre + (((end - start) * (1/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 36);
+ RGraph.Text(context, font, size, centerx + (0.951 * r ), centery - (0.309 * r), String(units_pre + (((end - start) * (2/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 72);
+ RGraph.Text(context, font, size, centerx + (0.949 * r), centery + (0.287 * r), String(units_pre + (((end - start) * (3/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 108);
+ RGraph.Text(context, font, size, centerx + (0.588 * r ), centery + (0.809 * r ), String(units_pre + (((end - start) * (4/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 144);
+ RGraph.Text(context, font, size, centerx, centery + r, String(units_pre + (((end - start) * (5/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 180);
+ RGraph.Text(context, font, size, centerx - (0.588 * r ), centery + (0.809 * r ), String(units_pre + (((end - start) * (6/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 216);
+ RGraph.Text(context, font, size, centerx - (0.949 * r), centery + (0.300 * r), a = String(units_pre + (((end - start) * (7/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 252);
+ RGraph.Text(context, font, size, centerx - (0.951 * r), centery - (0.309 * r), String(units_pre + (((end - start) * (8/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 288);
+ RGraph.Text(context, font, size, centerx - (0.588 * r ), centery - (0.809 * r ), String(units_pre + (((end - start) * (9/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 324);
+ RGraph.Text(context, font, size, centerx, centery - r, this.Get('chart.zerostart') ? units_pre + String(this.start) + units_post : String(units_pre + (((end - start) * (10/10)) + start).toFixed(decimals) + units_post), 'center', 'center', false, 360);
+ }
+
+ this.context.fill();
+
+ /**
+ * Draw the text label below the center point
+ */
+ if (this.Get('chart.value.text')) {
+ context.strokeStyle = 'black';
+ RGraph.Text(context, font, size + 2, centerx, centery + size + 2 + 10, String(this.Get('chart.value.units.pre') + this.value.toFixed(this.Get('chart.value.text.decimals')) + this.Get('chart.value.units.post')), 'center', 'center', true, null, 'white');
+ }
+ }