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1029 lines
42 KiB
JavaScript
1029 lines
42 KiB
JavaScript
/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.0b2_r947
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*
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* Copyright (c) 2009-2011 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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$.jqplot.LineRenderer.call(this);
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};
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$.jqplot.MeterGaugeRenderer.prototype = new $.jqplot.LineRenderer();
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$.jqplot.MeterGaugeRenderer.prototype.constructor = $.jqplot.MeterGaugeRenderer;
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// called with scope of a series
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$.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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$.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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// 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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this.setmin = !!(this.min == null);
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this.setmax = !!(this.max == null);
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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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// 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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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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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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$.jqplot.MeterGaugeRenderer.prototype.setGridData = function(plot) {
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// set gridData property. This will hold angle in radians of each data point.
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var stack = [];
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var td = [];
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var sa = this.startAngle;
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for (var i=0; i<this.data.length; i++){
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stack.push(this.data[i][1]);
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td.push([this.data[i][0]]);
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if (i>0) {
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stack[i] += stack[i-1];
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}
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}
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var fact = Math.PI*2/stack[stack.length - 1];
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for (var i=0; i<stack.length; i++) {
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td[i][1] = stack[i] * fact;
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}
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this.gridData = td;
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};
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$.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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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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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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// 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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// pre-draw so can get it's 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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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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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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}
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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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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.
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var max = this.max,
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min = this.min,
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setmax = this.setmax,
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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)));
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var tp = (ti/Math.pow(10, tf));
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(tp > 2 && tp <= 2.5) ? tp = 2.5 : tp = Math.ceil(tp);
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var t = this.tickPositions;
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var tpindex, nt;
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for (i=0; i<t.length; i++) {
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if (tp == t[i] || i && t[i-1] < tp && tp < t[i]) {
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ti = t[i]*Math.pow(10, tf);
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tpindex = i;
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}
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}
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for (i=0; i<t.length; i++) {
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if (tp == t[i] || i && t[i-1] < tp && tp < t[i]) {
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ti = t[i]*Math.pow(10, tf);
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nt = Math.ceil((max - min) / ti);
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}
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}
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// both max and min are free
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if (setmax && setmin) {
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var tmin = (min > 0) ? min - min % ti : min - min % ti - ti;
|
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if (!this.forceZero) {
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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]) {
|
|
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) {
|
|
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;
|
|
|
|
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});
|
|
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);
|
|
|
|
|