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1029 lines
42 KiB
1029 lines
42 KiB
/** |
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* jqPlot |
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* Pure JavaScript plotting plugin using jQuery |
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* |
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* Version: 1.0.8 |
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* Revision: 1250 |
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* |
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* Copyright (c) 2009-2013 Chris Leonello |
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* jqPlot is currently available for use in all personal or commercial projects |
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL |
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can |
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* choose the license that best suits your project and use it accordingly. |
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* |
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* Although not required, the author would appreciate an email letting him |
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* know of any substantial use of jqPlot. You can reach the author at: |
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* chris at jqplot dot com or see http://www.jqplot.com/info.php . |
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* |
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* If you are feeling kind and generous, consider supporting the project by |
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* making a donation at: http://www.jqplot.com/donate.php . |
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* |
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle: |
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* |
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* version 2007.04.27 |
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* author Ash Searle |
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* http://hexmen.com/blog/2007/03/printf-sprintf/ |
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* http://hexmen.com/js/sprintf.js |
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* The author (Ash Searle) has placed this code in the public domain: |
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* "This code is unrestricted: you are free to use it however you like." |
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* |
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*/ |
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(function($) { |
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/** |
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* Class: $.jqplot.MeterGaugeRenderer |
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* Plugin renderer to draw a meter gauge chart. |
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* |
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* Data consists of a single series with 1 data point to position the gauge needle. |
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* |
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* To use this renderer, you need to include the |
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* meter gauge renderer plugin, for example: |
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* |
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* > <script type="text/javascript" src="plugins/jqplot.meterGaugeRenderer.js"></script> |
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* |
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* Properties described here are passed into the $.jqplot function |
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* as options on the series renderer. For example: |
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* |
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* > plot0 = $.jqplot('chart0',[[18]],{ |
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* > title: 'Network Speed', |
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* > seriesDefaults: { |
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* > renderer: $.jqplot.MeterGaugeRenderer, |
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* > rendererOptions: { |
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* > label: 'MB/s' |
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* > } |
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* > } |
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* > }); |
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* |
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* A meterGauge plot does not support events. |
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*/ |
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$.jqplot.MeterGaugeRenderer = function(){ |
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$.jqplot.LineRenderer.call(this); |
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}; |
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|
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$.jqplot.MeterGaugeRenderer.prototype = new $.jqplot.LineRenderer(); |
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$.jqplot.MeterGaugeRenderer.prototype.constructor = $.jqplot.MeterGaugeRenderer; |
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|
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// called with scope of a series |
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$.jqplot.MeterGaugeRenderer.prototype.init = function(options) { |
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// Group: Properties |
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// |
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// prop: diameter |
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// Outer diameter of the meterGauge, auto computed by default |
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this.diameter = null; |
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// prop: padding |
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// padding between the meterGauge and plot edges, auto |
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// calculated by default. |
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this.padding = null; |
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// prop: shadowOffset |
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// offset of the shadow from the gauge ring and offset of |
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// each succesive stroke of the shadow from the last. |
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this.shadowOffset = 2; |
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// prop: shadowAlpha |
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// transparency of the shadow (0 = transparent, 1 = opaque) |
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this.shadowAlpha = 0.07; |
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// prop: shadowDepth |
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// number of strokes to apply to the shadow, |
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// each stroke offset shadowOffset from the last. |
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this.shadowDepth = 4; |
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// prop: background |
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// background color of the inside of the gauge. |
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this.background = "#efefef"; |
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// prop: ringColor |
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// color of the outer ring, hub, and needle of the gauge. |
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this.ringColor = "#BBC6D0"; |
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// needle color not implemented yet. |
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this.needleColor = "#C3D3E5"; |
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// prop: tickColor |
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// color of the tick marks around the gauge. |
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this.tickColor = "#989898"; |
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// prop: ringWidth |
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// width of the ring around the gauge. Auto computed by default. |
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this.ringWidth = null; |
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// prop: min |
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// Minimum value on the gauge. Auto computed by default |
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this.min; |
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// prop: max |
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// Maximum value on the gauge. Auto computed by default |
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this.max; |
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// prop: ticks |
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// Array of tick values. Auto computed by default. |
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this.ticks = []; |
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// prop: showTicks |
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// true to show ticks around gauge. |
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this.showTicks = true; |
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// prop: showTickLabels |
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// true to show tick labels next to ticks. |
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this.showTickLabels = true; |
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// prop: label |
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// A gauge label like 'kph' or 'Volts' |
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this.label = null; |
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// prop: labelHeightAdjust |
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// Number of Pixels to offset the label up (-) or down (+) from its default position. |
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this.labelHeightAdjust = 0; |
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// prop: labelPosition |
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// Where to position the label, either 'inside' or 'bottom'. |
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this.labelPosition = 'inside'; |
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// prop: intervals |
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// Array of ranges to be drawn around the gauge. |
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// Array of form: |
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// > [value1, value2, ...] |
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// indicating the values for the first, second, ... intervals. |
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this.intervals = []; |
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// prop: intervalColors |
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// Array of colors to use for the intervals. |
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this.intervalColors = [ "#4bb2c5", "#EAA228", "#c5b47f", "#579575", "#839557", "#958c12", "#953579", "#4b5de4", "#d8b83f", "#ff5800", "#0085cc", "#c747a3", "#cddf54", "#FBD178", "#26B4E3", "#bd70c7"]; |
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// prop: intervalInnerRadius |
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// Radius of the inner circle of the interval ring. |
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this.intervalInnerRadius = null; |
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// prop: intervalOuterRadius |
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// Radius of the outer circle of the interval ring. |
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this.intervalOuterRadius = null; |
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this.tickRenderer = $.jqplot.MeterGaugeTickRenderer; |
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// ticks spaced every 1, 2, 2.5, 5, 10, 20, .1, .2, .25, .5, etc. |
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this.tickPositions = [1, 2, 2.5, 5, 10]; |
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// prop: tickSpacing |
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// Degrees between ticks. This is a target number, if |
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// incompatible span and ticks are supplied, a suitable |
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// spacing close to this value will be computed. |
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this.tickSpacing = 30; |
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this.numberMinorTicks = null; |
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// prop: hubRadius |
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// Radius of the hub at the bottom center of gauge which the needle attaches to. |
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// Auto computed by default |
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this.hubRadius = null; |
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// prop: tickPadding |
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// padding of the tick marks to the outer ring and the tick labels to marks. |
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// Auto computed by default. |
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this.tickPadding = null; |
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// prop: needleThickness |
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// Maximum thickness the needle. Auto computed by default. |
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this.needleThickness = null; |
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// prop: needlePad |
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// Padding between needle and inner edge of the ring when the needle is at the min or max gauge value. |
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this.needlePad = 6; |
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// prop: pegNeedle |
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// True will stop needle just below/above the min/max values if data is below/above min/max, |
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// as if the meter is "pegged". |
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this.pegNeedle = true; |
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this._type = 'meterGauge'; |
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|
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$.extend(true, this, options); |
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this.type = null; |
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this.numberTicks = null; |
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this.tickInterval = null; |
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// span, the sweep (in degrees) from min to max. This gauge is |
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// a semi-circle. |
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this.span = 180; |
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// get rid of this nonsense |
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// this.innerSpan = this.span; |
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if (this.type == 'circular') { |
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this.semiCircular = false; |
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} |
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else if (this.type != 'circular') { |
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this.semiCircular = true; |
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} |
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else { |
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this.semiCircular = (this.span <= 180) ? true : false; |
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} |
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this._tickPoints = []; |
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// reference to label element. |
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this._labelElem = null; |
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|
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// start the gauge at the beginning of the span |
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this.startAngle = (90 + (360 - this.span)/2) * Math.PI/180; |
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this.endAngle = (90 - (360 - this.span)/2) * Math.PI/180; |
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|
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this.setmin = !!(this.min == null); |
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this.setmax = !!(this.max == null); |
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|
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// if given intervals and is an array of values, create labels and colors. |
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if (this.intervals.length) { |
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if (this.intervals[0].length == null || this.intervals.length == 1) { |
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for (var i=0; i<this.intervals.length; i++) { |
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this.intervals[i] = [this.intervals[i], this.intervals[i], this.intervalColors[i]]; |
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} |
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} |
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else if (this.intervals[0].length == 2) { |
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for (i=0; i<this.intervals.length; i++) { |
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this.intervals[i] = [this.intervals[i][0], this.intervals[i][1], this.intervalColors[i]]; |
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} |
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} |
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} |
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|
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// compute min, max and ticks if not supplied: |
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if (this.ticks.length) { |
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if (this.ticks[0].length == null || this.ticks[0].length == 1) { |
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for (var i=0; i<this.ticks.length; i++) { |
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this.ticks[i] = [this.ticks[i], this.ticks[i]]; |
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} |
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} |
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this.min = (this.min == null) ? this.ticks[0][0] : this.min; |
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this.max = (this.max == null) ? this.ticks[this.ticks.length-1][0] : this.max; |
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this.setmin = false; |
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this.setmax = false; |
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this.numberTicks = this.ticks.length; |
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this.tickInterval = this.ticks[1][0] - this.ticks[0][0]; |
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this.tickFactor = Math.floor(parseFloat((Math.log(this.tickInterval)/Math.log(10)).toFixed(11))); |
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// use the first interal to calculate minor ticks; |
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this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); |
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if (!this.numberMinorTicks) { |
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this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); |
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} |
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if (!this.numberMinorTicks) { |
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this.numberMinorTicks = 1; |
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} |
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} |
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|
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else if (this.intervals.length) { |
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this.min = (this.min == null) ? 0 : this.min; |
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this.setmin = false; |
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if (this.max == null) { |
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if (this.intervals[this.intervals.length-1][0] >= this.data[0][1]) { |
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this.max = this.intervals[this.intervals.length-1][0]; |
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this.setmax = false; |
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} |
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} |
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else { |
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this.setmax = false; |
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} |
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} |
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|
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else { |
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// no ticks and no intervals supplied, put needle in middle |
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this.min = (this.min == null) ? 0 : this.min; |
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this.setmin = false; |
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if (this.max == null) { |
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this.max = this.data[0][1] * 1.25; |
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this.setmax = true; |
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} |
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else { |
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this.setmax = false; |
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} |
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} |
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}; |
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|
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$.jqplot.MeterGaugeRenderer.prototype.setGridData = function(plot) { |
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// set gridData property. This will hold angle in radians of each data point. |
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var stack = []; |
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var td = []; |
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var sa = this.startAngle; |
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for (var i=0; i<this.data.length; i++){ |
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stack.push(this.data[i][1]); |
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td.push([this.data[i][0]]); |
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if (i>0) { |
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stack[i] += stack[i-1]; |
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} |
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} |
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var fact = Math.PI*2/stack[stack.length - 1]; |
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|
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for (var i=0; i<stack.length; i++) { |
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td[i][1] = stack[i] * fact; |
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} |
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this.gridData = td; |
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}; |
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|
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$.jqplot.MeterGaugeRenderer.prototype.makeGridData = function(data, plot) { |
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var stack = []; |
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var td = []; |
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var sa = this.startAngle; |
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for (var i=0; i<data.length; i++){ |
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stack.push(data[i][1]); |
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td.push([data[i][0]]); |
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if (i>0) { |
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stack[i] += stack[i-1]; |
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} |
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} |
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var fact = Math.PI*2/stack[stack.length - 1]; |
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|
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for (var i=0; i<stack.length; i++) { |
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td[i][1] = stack[i] * fact; |
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} |
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return td; |
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}; |
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|
|
|
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function getnmt(pos, interval, fact) { |
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var temp; |
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for (var i=pos.length-1; i>=0; i--) { |
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temp = interval/(pos[i] * Math.pow(10, fact)); |
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if (temp == 4 || temp == 5) { |
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return temp - 1; |
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} |
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} |
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return null; |
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} |
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|
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// called with scope of series |
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$.jqplot.MeterGaugeRenderer.prototype.draw = function (ctx, gd, options) { |
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var i; |
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var opts = (options != undefined) ? options : {}; |
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// offset and direction of offset due to legend placement |
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var offx = 0; |
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var offy = 0; |
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var trans = 1; |
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if (options.legendInfo && options.legendInfo.placement == 'inside') { |
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var li = options.legendInfo; |
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switch (li.location) { |
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case 'nw': |
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offx = li.width + li.xoffset; |
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break; |
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case 'w': |
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offx = li.width + li.xoffset; |
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break; |
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case 'sw': |
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offx = li.width + li.xoffset; |
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break; |
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case 'ne': |
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offx = li.width + li.xoffset; |
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trans = -1; |
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break; |
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case 'e': |
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offx = li.width + li.xoffset; |
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trans = -1; |
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break; |
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case 'se': |
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offx = li.width + li.xoffset; |
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trans = -1; |
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break; |
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case 'n': |
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offy = li.height + li.yoffset; |
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break; |
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case 's': |
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offy = li.height + li.yoffset; |
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trans = -1; |
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break; |
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default: |
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break; |
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} |
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} |
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|
|
|
|
|
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// pre-draw so can get its dimensions. |
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if (this.label) { |
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this._labelElem = $('<div class="jqplot-meterGauge-label" style="position:absolute;">'+this.label+'</div>'); |
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this.canvas._elem.after(this._labelElem); |
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} |
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|
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var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow; |
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var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine; |
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var fill = (opts.fill != undefined) ? opts.fill : this.fill; |
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var cw = ctx.canvas.width; |
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var ch = ctx.canvas.height; |
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if (this.padding == null) { |
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this.padding = Math.round(Math.min(cw, ch)/30); |
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} |
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var w = cw - offx - 2 * this.padding; |
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var h = ch - offy - 2 * this.padding; |
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if (this.labelPosition == 'bottom' && this.label) { |
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h -= this._labelElem.outerHeight(true); |
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} |
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var mindim = Math.min(w,h); |
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var d = mindim; |
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|
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if (!this.diameter) { |
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if (this.semiCircular) { |
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if ( w >= 2*h) { |
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if (!this.ringWidth) { |
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this.ringWidth = 2*h/35; |
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} |
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this.needleThickness = this.needleThickness || 2+Math.pow(this.ringWidth, 0.8); |
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this.innerPad = this.ringWidth/2 + this.needleThickness/2 + this.needlePad; |
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this.diameter = 2 * (h - 2*this.innerPad); |
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} |
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else { |
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if (!this.ringWidth) { |
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this.ringWidth = w/35; |
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} |
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this.needleThickness = this.needleThickness || 2+Math.pow(this.ringWidth, 0.8); |
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this.innerPad = this.ringWidth/2 + this.needleThickness/2 + this.needlePad; |
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this.diameter = w - 2*this.innerPad - this.ringWidth - this.padding; |
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} |
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// center taking into account legend and over draw for gauge bottom below hub. |
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// this will be center of hub. |
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this._center = [(cw - trans * offx)/2 + trans * offx, (ch + trans*offy - this.padding - this.ringWidth - this.innerPad)]; |
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} |
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else { |
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if (!this.ringWidth) { |
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this.ringWidth = d/35; |
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} |
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this.needleThickness = this.needleThickness || 2+Math.pow(this.ringWidth, 0.8); |
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this.innerPad = 0; |
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this.diameter = d - this.ringWidth; |
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// center in middle of canvas taking into account legend. |
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// will be center of hub. |
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this._center = [(cw-trans*offx)/2 + trans * offx, (ch-trans*offy)/2 + trans * offy]; |
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} |
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if (this._labelElem && this.labelPosition == 'bottom') { |
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this._center[1] -= this._labelElem.outerHeight(true); |
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} |
|
|
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} |
|
|
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this._radius = this.diameter/2; |
|
|
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this.tickSpacing = 6000/this.diameter; |
|
|
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if (!this.hubRadius) { |
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this.hubRadius = this.diameter/18; |
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} |
|
|
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this.shadowOffset = 0.5 + this.ringWidth/9; |
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this.shadowWidth = this.ringWidth*1; |
|
|
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this.tickPadding = 3 + Math.pow(this.diameter/20, 0.7); |
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this.tickOuterRadius = this._radius - this.ringWidth/2 - this.tickPadding; |
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this.tickLength = (this.showTicks) ? this._radius/13 : 0; |
|
|
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if (this.ticks.length == 0) { |
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// no ticks, lets make some. |
|
var max = this.max, |
|
min = this.min, |
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setmax = this.setmax, |
|
setmin = this.setmin, |
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ti = (max - min) * this.tickSpacing / this.span; |
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var tf = Math.floor(parseFloat((Math.log(ti)/Math.log(10)).toFixed(11))); |
|
var tp = (ti/Math.pow(10, tf)); |
|
(tp > 2 && tp <= 2.5) ? tp = 2.5 : tp = Math.ceil(tp); |
|
var t = this.tickPositions; |
|
var tpindex, nt; |
|
|
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for (i=0; i<t.length; i++) { |
|
if (tp == t[i] || i && t[i-1] < tp && tp < t[i]) { |
|
ti = t[i]*Math.pow(10, tf); |
|
tpindex = i; |
|
} |
|
} |
|
|
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for (i=0; i<t.length; i++) { |
|
if (tp == t[i] || i && t[i-1] < tp && tp < t[i]) { |
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ti = t[i]*Math.pow(10, tf); |
|
nt = Math.ceil((max - min) / ti); |
|
} |
|
} |
|
|
|
// both max and min are free |
|
if (setmax && setmin) { |
|
var tmin = (min > 0) ? min - min % ti : min - min % ti - ti; |
|
if (!this.forceZero) { |
|
var diff = Math.min(min - tmin, 0.8*ti); |
|
var ntp = Math.floor(diff/t[tpindex]); |
|
if (ntp > 1) { |
|
tmin = tmin + t[tpindex] * (ntp-1); |
|
if (parseInt(tmin, 10) != tmin && parseInt(tmin-t[tpindex], 10) == tmin-t[tpindex]) { |
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tmin = tmin - t[tpindex]; |
|
} |
|
} |
|
} |
|
if (min == tmin) { |
|
min -= ti; |
|
} |
|
else { |
|
// tmin should always be lower than dataMin |
|
if (min - tmin > 0.23*ti) { |
|
min = tmin; |
|
} |
|
else { |
|
min = tmin -ti; |
|
nt += 1; |
|
} |
|
} |
|
nt += 1; |
|
var tmax = min + (nt - 1) * ti; |
|
if (max >= tmax) { |
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tmax += ti; |
|
nt += 1; |
|
} |
|
// now tmax should always be mroe than dataMax |
|
if (tmax - max < 0.23*ti) { |
|
tmax += ti; |
|
nt += 1; |
|
} |
|
this.max = max = tmax; |
|
this.min = min; |
|
|
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this.tickInterval = ti; |
|
this.numberTicks = nt; |
|
var it; |
|
for (i=0; i<nt; i++) { |
|
it = parseFloat((min+i*ti).toFixed(11)); |
|
this.ticks.push([it, it]); |
|
} |
|
this.max = this.ticks[nt-1][1]; |
|
|
|
this.tickFactor = tf; |
|
// determine number of minor ticks |
|
|
|
this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); |
|
|
|
if (!this.numberMinorTicks) { |
|
this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); |
|
} |
|
} |
|
// max is free, min is fixed |
|
else if (setmax) { |
|
var tmax = min + (nt - 1) * ti; |
|
if (max >= tmax) { |
|
max = tmax + ti; |
|
nt += 1; |
|
} |
|
else { |
|
max = tmax; |
|
} |
|
|
|
this.tickInterval = this.tickInterval || ti; |
|
this.numberTicks = this.numberTicks || nt; |
|
var it; |
|
for (i=0; i<this.numberTicks; i++) { |
|
it = parseFloat((min+i*this.tickInterval).toFixed(11)); |
|
this.ticks.push([it, it]); |
|
} |
|
this.max = this.ticks[this.numberTicks-1][1]; |
|
|
|
this.tickFactor = tf; |
|
// determine number of minor ticks |
|
this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); |
|
|
|
if (!this.numberMinorTicks) { |
|
this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); |
|
} |
|
} |
|
|
|
// not setting max or min |
|
if (!setmax && !setmin) { |
|
var range = this.max - this.min; |
|
tf = Math.floor(parseFloat((Math.log(range)/Math.log(10)).toFixed(11))) - 1; |
|
var nticks = [5,6,4,7,3,8,9,10,2], res, numticks, nonSigDigits=0, sigRange; |
|
// check to see how many zeros are at the end of the range |
|
if (range > 1) { |
|
var rstr = String(range); |
|
if (rstr.search(/\./) == -1) { |
|
var pos = rstr.search(/0+$/); |
|
nonSigDigits = (pos > 0) ? rstr.length - pos - 1 : 0; |
|
} |
|
} |
|
sigRange = range/Math.pow(10, nonSigDigits); |
|
for (i=0; i<nticks.length; i++) { |
|
res = sigRange/(nticks[i]-1); |
|
if (res == parseInt(res, 10)) { |
|
this.numberTicks = nticks[i]; |
|
this.tickInterval = range/(this.numberTicks-1); |
|
this.tickFactor = tf+1; |
|
break; |
|
} |
|
} |
|
var it; |
|
for (i=0; i<this.numberTicks; i++) { |
|
it = parseFloat((this.min+i*this.tickInterval).toFixed(11)); |
|
this.ticks.push([it, it]); |
|
} |
|
// determine number of minor ticks |
|
this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); |
|
|
|
if (!this.numberMinorTicks) { |
|
this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); |
|
} |
|
|
|
if (!this.numberMinorTicks) { |
|
this.numberMinorTicks = 1; |
|
var nums = [4, 5, 3, 6, 2]; |
|
for (i=0; i<5; i++) { |
|
var temp = this.tickInterval/nums[i]; |
|
if (temp == parseInt(temp, 10)) { |
|
this.numberMinorTicks = nums[i]-1; |
|
break; |
|
} |
|
} |
|
} |
|
} |
|
} |
|
|
|
|
|
var r = this._radius, |
|
sa = this.startAngle, |
|
ea = this.endAngle, |
|
pi = Math.PI, |
|
hpi = Math.PI/2; |
|
|
|
if (this.semiCircular) { |
|
var overAngle = Math.atan(this.innerPad/r), |
|
outersa = this.outerStartAngle = sa - overAngle, |
|
outerea = this.outerEndAngle = ea + overAngle, |
|
hubsa = this.hubStartAngle = sa - Math.atan(this.innerPad/this.hubRadius*2), |
|
hubea = this.hubEndAngle = ea + Math.atan(this.innerPad/this.hubRadius*2); |
|
|
|
ctx.save(); |
|
|
|
ctx.translate(this._center[0], this._center[1]); |
|
ctx.lineJoin = "round"; |
|
ctx.lineCap = "round"; |
|
|
|
// draw the innerbackground |
|
ctx.save(); |
|
ctx.beginPath(); |
|
ctx.fillStyle = this.background; |
|
ctx.arc(0, 0, r, outersa, outerea, false); |
|
ctx.closePath(); |
|
ctx.fill(); |
|
ctx.restore(); |
|
|
|
// draw the shadow |
|
// the outer ring. |
|
var shadowColor = 'rgba(0,0,0,'+this.shadowAlpha+')'; |
|
ctx.save(); |
|
for (var i=0; i<this.shadowDepth; i++) { |
|
ctx.translate(this.shadowOffset*Math.cos(this.shadowAngle/180*Math.PI), this.shadowOffset*Math.sin(this.shadowAngle/180*Math.PI)); |
|
ctx.beginPath(); |
|
ctx.strokeStyle = shadowColor; |
|
ctx.lineWidth = this.shadowWidth; |
|
ctx.arc(0 ,0, r, outersa, outerea, false); |
|
ctx.closePath(); |
|
ctx.stroke(); |
|
} |
|
ctx.restore(); |
|
|
|
// the inner hub. |
|
ctx.save(); |
|
var tempd = parseInt((this.shadowDepth+1)/2, 10); |
|
for (var i=0; i<tempd; i++) { |
|
ctx.translate(this.shadowOffset*Math.cos(this.shadowAngle/180*Math.PI), this.shadowOffset*Math.sin(this.shadowAngle/180*Math.PI)); |
|
ctx.beginPath(); |
|
ctx.fillStyle = shadowColor; |
|
ctx.arc(0 ,0, this.hubRadius, hubsa, hubea, false); |
|
ctx.closePath(); |
|
ctx.fill(); |
|
} |
|
ctx.restore(); |
|
|
|
// draw the outer ring. |
|
ctx.save(); |
|
ctx.beginPath(); |
|
ctx.strokeStyle = this.ringColor; |
|
ctx.lineWidth = this.ringWidth; |
|
ctx.arc(0 ,0, r, outersa, outerea, false); |
|
ctx.closePath(); |
|
ctx.stroke(); |
|
ctx.restore(); |
|
|
|
// draw the hub |
|
|
|
ctx.save(); |
|
ctx.beginPath(); |
|
ctx.fillStyle = this.ringColor; |
|
ctx.arc(0 ,0, this.hubRadius,hubsa, hubea, false); |
|
ctx.closePath(); |
|
ctx.fill(); |
|
ctx.restore(); |
|
|
|
// draw the ticks |
|
if (this.showTicks) { |
|
ctx.save(); |
|
var orad = this.tickOuterRadius, |
|
tl = this.tickLength, |
|
mtl = tl/2, |
|
nmt = this.numberMinorTicks, |
|
ts = this.span * Math.PI / 180 / (this.ticks.length-1), |
|
mts = ts/(nmt + 1); |
|
|
|
for (i = 0; i<this.ticks.length; i++) { |
|
ctx.beginPath(); |
|
ctx.lineWidth = 1.5 + this.diameter/360; |
|
ctx.strokeStyle = this.ringColor; |
|
var wps = ts*i+sa; |
|
ctx.moveTo(-orad * Math.cos(ts*i+sa), orad * Math.sin(ts*i+sa)); |
|
ctx.lineTo(-(orad-tl) * Math.cos(ts*i+sa), (orad - tl) * Math.sin(ts*i+sa)); |
|
this._tickPoints.push([(orad-tl) * Math.cos(ts*i+sa) + this._center[0] + this.canvas._offsets.left, (orad - tl) * Math.sin(ts*i+sa) + this._center[1] + this.canvas._offsets.top, ts*i+sa]); |
|
ctx.stroke(); |
|
ctx.lineWidth = 1.0 + this.diameter/440; |
|
if (i<this.ticks.length-1) { |
|
for (var j=1; j<=nmt; j++) { |
|
ctx.beginPath(); |
|
ctx.moveTo(-orad * Math.cos(ts*i+mts*j+sa), orad * Math.sin(ts*i+mts*j+sa)); |
|
ctx.lineTo(-(orad-mtl) * Math.cos(ts*i+mts*j+sa), (orad-mtl) * Math.sin(ts*i+mts*j+sa)); |
|
ctx.stroke(); |
|
} |
|
} |
|
} |
|
ctx.restore(); |
|
} |
|
|
|
// draw the tick labels |
|
if (this.showTickLabels) { |
|
var elem, l, t, ew, eh, dim, maxdim=0; |
|
var tp = this.tickPadding * (1 - 1/(this.diameter/80+1)); |
|
for (i=0; i<this.ticks.length; i++) { |
|
elem = $('<div class="jqplot-meterGauge-tick" style="position:absolute;">'+this.ticks[i][1]+'</div>'); |
|
this.canvas._elem.after(elem); |
|
ew = elem.outerWidth(true); |
|
eh = elem.outerHeight(true); |
|
l = this._tickPoints[i][0] - ew * (this._tickPoints[i][2]-Math.PI)/Math.PI - tp * Math.cos(this._tickPoints[i][2]); |
|
t = this._tickPoints[i][1] - eh/2 + eh/2 * Math.pow(Math.abs((Math.sin(this._tickPoints[i][2]))), 0.5) + tp/3 * Math.pow(Math.abs((Math.sin(this._tickPoints[i][2]))), 0.5) ; |
|
// t = this._tickPoints[i][1] - eh/2 - eh/2 * Math.sin(this._tickPoints[i][2]) - tp/2 * Math.sin(this._tickPoints[i][2]); |
|
elem.css({left:l, top:t, color: this.tickColor}); |
|
dim = ew*Math.cos(this._tickPoints[i][2]) + eh*Math.sin(Math.PI/2+this._tickPoints[i][2]/2); |
|
maxdim = (dim > maxdim) ? dim : maxdim; |
|
} |
|
} |
|
|
|
// draw the gauge label |
|
if (this.label && this.labelPosition == 'inside') { |
|
var l = this._center[0] + this.canvas._offsets.left; |
|
var tp = this.tickPadding * (1 - 1/(this.diameter/80+1)); |
|
var t = 0.5*(this._center[1] + this.canvas._offsets.top - this.hubRadius) + 0.5*(this._center[1] + this.canvas._offsets.top - this.tickOuterRadius + this.tickLength + tp) + this.labelHeightAdjust; |
|
// this._labelElem = $('<div class="jqplot-meterGauge-label" style="position:absolute;">'+this.label+'</div>'); |
|
// this.canvas._elem.after(this._labelElem); |
|
l -= this._labelElem.outerWidth(true)/2; |
|
t -= this._labelElem.outerHeight(true)/2; |
|
this._labelElem.css({left:l, top:t}); |
|
} |
|
|
|
else if (this.label && this.labelPosition == 'bottom') { |
|
var l = this._center[0] + this.canvas._offsets.left - this._labelElem.outerWidth(true)/2; |
|
var t = this._center[1] + this.canvas._offsets.top + this.innerPad + this.ringWidth + this.padding + this.labelHeightAdjust; |
|
this._labelElem.css({left:l, top:t}); |
|
|
|
} |
|
|
|
// draw the intervals |
|
|
|
ctx.save(); |
|
var inner = this.intervalInnerRadius || this.hubRadius * 1.5; |
|
if (this.intervalOuterRadius == null) { |
|
if (this.showTickLabels) { |
|
var outer = (this.tickOuterRadius - this.tickLength - this.tickPadding - this.diameter/8); |
|
} |
|
else { |
|
var outer = (this.tickOuterRadius - this.tickLength - this.diameter/16); |
|
} |
|
} |
|
else { |
|
var outer = this.intervalOuterRadius; |
|
} |
|
var range = this.max - this.min; |
|
var intrange = this.intervals[this.intervals.length-1] - this.min; |
|
var start, end, span = this.span*Math.PI/180; |
|
for (i=0; i<this.intervals.length; i++) { |
|
start = (i == 0) ? sa : sa + (this.intervals[i-1][0] - this.min)*span/range; |
|
if (start < 0) { |
|
start = 0; |
|
} |
|
end = sa + (this.intervals[i][0] - this.min)*span/range; |
|
if (end < 0) { |
|
end = 0; |
|
} |
|
ctx.beginPath(); |
|
ctx.fillStyle = this.intervals[i][2]; |
|
ctx.arc(0, 0, inner, start, end, false); |
|
ctx.lineTo(outer*Math.cos(end), outer*Math.sin(end)); |
|
ctx.arc(0, 0, outer, end, start, true); |
|
ctx.lineTo(inner*Math.cos(start), inner*Math.sin(start)); |
|
ctx.closePath(); |
|
ctx.fill(); |
|
} |
|
ctx.restore(); |
|
|
|
// draw the needle |
|
var datapoint = this.data[0][1]; |
|
var dataspan = this.max - this.min; |
|
if (this.pegNeedle) { |
|
if (this.data[0][1] > this.max + dataspan*3/this.span) { |
|
datapoint = this.max + dataspan*3/this.span; |
|
} |
|
if (this.data[0][1] < this.min - dataspan*3/this.span) { |
|
datapoint = this.min - dataspan*3/this.span; |
|
} |
|
} |
|
var dataang = (datapoint - this.min)/dataspan * this.span * Math.PI/180 + this.startAngle; |
|
|
|
|
|
ctx.save(); |
|
ctx.beginPath(); |
|
ctx.fillStyle = this.ringColor; |
|
ctx.strokeStyle = this.ringColor; |
|
this.needleLength = (this.tickOuterRadius - this.tickLength) * 0.85; |
|
this.needleThickness = (this.needleThickness < 2) ? 2 : this.needleThickness; |
|
var endwidth = this.needleThickness * 0.4; |
|
|
|
|
|
var dl = this.needleLength/10; |
|
var dt = (this.needleThickness - endwidth)/10; |
|
var templ; |
|
for (var i=0; i<10; i++) { |
|
templ = this.needleThickness - i*dt; |
|
ctx.moveTo(dl*i*Math.cos(dataang), dl*i*Math.sin(dataang)); |
|
ctx.lineWidth = templ; |
|
ctx.lineTo(dl*(i+1)*Math.cos(dataang), dl*(i+1)*Math.sin(dataang)); |
|
ctx.stroke(); |
|
} |
|
|
|
ctx.restore(); |
|
} |
|
else { |
|
this._center = [(cw - trans * offx)/2 + trans * offx, (ch - trans*offy)/2 + trans * offy]; |
|
} |
|
}; |
|
|
|
$.jqplot.MeterGaugeAxisRenderer = function() { |
|
$.jqplot.LinearAxisRenderer.call(this); |
|
}; |
|
|
|
$.jqplot.MeterGaugeAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer(); |
|
$.jqplot.MeterGaugeAxisRenderer.prototype.constructor = $.jqplot.MeterGaugeAxisRenderer; |
|
|
|
|
|
// There are no traditional axes on a gauge chart. We just need to provide |
|
// dummy objects with properties so the plot will render. |
|
// called with scope of axis object. |
|
$.jqplot.MeterGaugeAxisRenderer.prototype.init = function(options){ |
|
// |
|
this.tickRenderer = $.jqplot.MeterGaugeTickRenderer; |
|
$.extend(true, this, options); |
|
// I don't think I'm going to need _dataBounds here. |
|
// have to go Axis scaling in a way to fit chart onto plot area |
|
// and provide u2p and p2u functionality for mouse cursor, etc. |
|
// for convienence set _dataBounds to 0 and 100 and |
|
// set min/max to 0 and 100. |
|
this._dataBounds = {min:0, max:100}; |
|
this.min = 0; |
|
this.max = 100; |
|
this.showTicks = false; |
|
this.ticks = []; |
|
this.showMark = false; |
|
this.show = false; |
|
}; |
|
|
|
$.jqplot.MeterGaugeLegendRenderer = function(){ |
|
$.jqplot.TableLegendRenderer.call(this); |
|
}; |
|
|
|
$.jqplot.MeterGaugeLegendRenderer.prototype = new $.jqplot.TableLegendRenderer(); |
|
$.jqplot.MeterGaugeLegendRenderer.prototype.constructor = $.jqplot.MeterGaugeLegendRenderer; |
|
|
|
/** |
|
* Class: $.jqplot.MeterGaugeLegendRenderer |
|
*Meter gauges don't typically have a legend, this overrides the default legend renderer. |
|
*/ |
|
$.jqplot.MeterGaugeLegendRenderer.prototype.init = function(options) { |
|
// Maximum number of rows in the legend. 0 or null for unlimited. |
|
this.numberRows = null; |
|
// Maximum number of columns in the legend. 0 or null for unlimited. |
|
this.numberColumns = null; |
|
$.extend(true, this, options); |
|
}; |
|
|
|
// called with context of legend |
|
$.jqplot.MeterGaugeLegendRenderer.prototype.draw = function() { |
|
if (this.show) { |
|
var series = this._series; |
|
var ss = 'position:absolute;'; |
|
ss += (this.background) ? 'background:'+this.background+';' : ''; |
|
ss += (this.border) ? 'border:'+this.border+';' : ''; |
|
ss += (this.fontSize) ? 'font-size:'+this.fontSize+';' : ''; |
|
ss += (this.fontFamily) ? 'font-family:'+this.fontFamily+';' : ''; |
|
ss += (this.textColor) ? 'color:'+this.textColor+';' : ''; |
|
ss += (this.marginTop != null) ? 'margin-top:'+this.marginTop+';' : ''; |
|
ss += (this.marginBottom != null) ? 'margin-bottom:'+this.marginBottom+';' : ''; |
|
ss += (this.marginLeft != null) ? 'margin-left:'+this.marginLeft+';' : ''; |
|
ss += (this.marginRight != null) ? 'margin-right:'+this.marginRight+';' : ''; |
|
this._elem = $('<table class="jqplot-table-legend" style="'+ss+'"></table>'); |
|
// MeterGauge charts legends don't go by number of series, but by number of data points |
|
// in the series. Refactor things here for that. |
|
|
|
var pad = false, |
|
reverse = false, |
|
nr, nc; |
|
var s = series[0]; |
|
|
|
if (s.show) { |
|
var pd = s.data; |
|
if (this.numberRows) { |
|
nr = this.numberRows; |
|
if (!this.numberColumns){ |
|
nc = Math.ceil(pd.length/nr); |
|
} |
|
else{ |
|
nc = this.numberColumns; |
|
} |
|
} |
|
else if (this.numberColumns) { |
|
nc = this.numberColumns; |
|
nr = Math.ceil(pd.length/this.numberColumns); |
|
} |
|
else { |
|
nr = pd.length; |
|
nc = 1; |
|
} |
|
|
|
var i, j, tr, td1, td2, lt, rs, color; |
|
var idx = 0; |
|
|
|
for (i=0; i<nr; i++) { |
|
if (reverse){ |
|
tr = $('<tr class="jqplot-table-legend"></tr>').prependTo(this._elem); |
|
} |
|
else{ |
|
tr = $('<tr class="jqplot-table-legend"></tr>').appendTo(this._elem); |
|
} |
|
for (j=0; j<nc; j++) { |
|
if (idx < pd.length){ |
|
// debugger |
|
lt = this.labels[idx] || pd[idx][0].toString(); |
|
color = s.color; |
|
if (!reverse){ |
|
if (i>0){ |
|
pad = true; |
|
} |
|
else{ |
|
pad = false; |
|
} |
|
} |
|
else{ |
|
if (i == nr -1){ |
|
pad = false; |
|
} |
|
else{ |
|
pad = true; |
|
} |
|
} |
|
rs = (pad) ? this.rowSpacing : '0'; |
|
|
|
td1 = $('<td class="jqplot-table-legend" style="text-align:center;padding-top:'+rs+';">'+ |
|
'<div><div class="jqplot-table-legend-swatch" style="border-color:'+color+';"></div>'+ |
|
'</div></td>'); |
|
td2 = $('<td class="jqplot-table-legend" style="padding-top:'+rs+';"></td>'); |
|
if (this.escapeHtml){ |
|
td2.text(lt); |
|
} |
|
else { |
|
td2.html(lt); |
|
} |
|
if (reverse) { |
|
td2.prependTo(tr); |
|
td1.prependTo(tr); |
|
} |
|
else { |
|
td1.appendTo(tr); |
|
td2.appendTo(tr); |
|
} |
|
pad = true; |
|
} |
|
idx++; |
|
} |
|
} |
|
} |
|
} |
|
return this._elem; |
|
}; |
|
|
|
|
|
// setup default renderers for axes and legend so user doesn't have to |
|
// called with scope of plot |
|
function preInit(target, data, options) { |
|
// debugger |
|
options = options || {}; |
|
options.axesDefaults = options.axesDefaults || {}; |
|
options.legend = options.legend || {}; |
|
options.seriesDefaults = options.seriesDefaults || {}; |
|
options.grid = options.grid || {}; |
|
|
|
// only set these if there is a gauge series |
|
var setopts = false; |
|
if (options.seriesDefaults.renderer == $.jqplot.MeterGaugeRenderer) { |
|
setopts = true; |
|
} |
|
else if (options.series) { |
|
for (var i=0; i < options.series.length; i++) { |
|
if (options.series[i].renderer == $.jqplot.MeterGaugeRenderer) { |
|
setopts = true; |
|
} |
|
} |
|
} |
|
|
|
if (setopts) { |
|
options.axesDefaults.renderer = $.jqplot.MeterGaugeAxisRenderer; |
|
options.legend.renderer = $.jqplot.MeterGaugeLegendRenderer; |
|
options.legend.preDraw = true; |
|
options.grid.background = options.grid.background || 'white'; |
|
options.grid.drawGridlines = false; |
|
options.grid.borderWidth = (options.grid.borderWidth != null) ? options.grid.borderWidth : 0; |
|
options.grid.shadow = (options.grid.shadow != null) ? options.grid.shadow : false; |
|
} |
|
} |
|
|
|
// called with scope of plot |
|
function postParseOptions(options) { |
|
// |
|
} |
|
|
|
$.jqplot.preInitHooks.push(preInit); |
|
$.jqplot.postParseOptionsHooks.push(postParseOptions); |
|
|
|
$.jqplot.MeterGaugeTickRenderer = function() { |
|
$.jqplot.AxisTickRenderer.call(this); |
|
}; |
|
|
|
$.jqplot.MeterGaugeTickRenderer.prototype = new $.jqplot.AxisTickRenderer(); |
|
$.jqplot.MeterGaugeTickRenderer.prototype.constructor = $.jqplot.MeterGaugeTickRenderer; |
|
|
|
})(jQuery); |
|
|
|
|
|
|