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1391 lines
47 KiB
JavaScript
1391 lines
47 KiB
JavaScript
// version: 2015-11-02
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/**
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* o--------------------------------------------------------------------------------o
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* | This file is part of the RGraph package - you can learn more at: |
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* | |
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* | http://www.rgraph.net |
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* | |
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* | RGraph is dual licensed under the Open Source GPL (General Public License) |
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* | v2.0 license and a commercial license which means that you're not bound by |
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* | the terms of the GPL. The commercial license is just £99 (GBP) and you can |
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* | read about it here: |
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* | http://www.rgraph.net/license |
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* o--------------------------------------------------------------------------------o
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*/
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RGraph = window.RGraph || {isRGraph: true};
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/**
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* The line chart constructor
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*
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* @param object canvas The canvas ID
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* @param array data The chart data
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* @param array ... Other lines to plot
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*/
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RGraph.Gauge = function (conf)
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{
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/**
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* Allow for object config style
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*/
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if ( typeof conf === 'object'
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&& typeof conf.min === 'number'
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&& typeof conf.max === 'number'
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&& typeof conf.id === 'string') {
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var id = conf.id
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var canvas = document.getElementById(id);
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var min = conf.min;
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var max = conf.max;
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var value = conf.value;
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var parseConfObjectForOptions = true; // Set this so the config is parsed (at the end of the constructor)
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} else {
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var id = conf;
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var canvas = document.getElementById(id);
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var min = arguments[1];
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var max = arguments[2];
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var value = arguments[3];
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}
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// id, min, max, value
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this.id = id;
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this.canvas = canvas;
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this.context = this.canvas.getContext ? this.canvas.getContext("2d", {alpha: (typeof id === 'object' && id.alpha === false) ? false : true}) : null;
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this.canvas.__object__ = this;
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this.type = 'gauge';
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this.min = min;
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this.max = max;
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this.value = RGraph.stringsToNumbers(value);
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this.isRGraph = true;
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this.currentValue = null;
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this.uid = RGraph.CreateUID();
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this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
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this.colorsParsed = false;
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this.coordsText = [];
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this.original_colors = [];
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this.firstDraw = true; // After the first draw this will be false
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/**
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* Range checking
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*/
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if (typeof(this.value) == 'object') {
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for (var i=0; i<this.value.length; ++i) {
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if (this.value[i] > this.max) this.value[i] = max;
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if (this.value[i] < this.min) this.value[i] = min;
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}
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} else {
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if (this.value > this.max) this.value = max;
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if (this.value < this.min) this.value = min;
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}
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/**
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* Compatibility with older browsers
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*/
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//RGraph.OldBrowserCompat(this.context);
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// Various config type stuff
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this.properties =
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{
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'chart.angles.start': null,
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'chart.angles.end': null,
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'chart.centerx': null,
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'chart.centery': null,
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'chart.radius': null,
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'chart.gutter.left': 15,
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'chart.gutter.right': 15,
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'chart.gutter.top': 15,
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'chart.gutter.bottom': 15,
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'chart.border.width': 10,
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'chart.title.top': '',
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'chart.title.top.font':'Arial',
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'chart.title.top.size':14,
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'chart.title.top.color':'#333',
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'chart.title.top.bold':false,
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'chart.title.top.pos': null,
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'chart.title.bottom': '',
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'chart.title.bottom.font':'Arial',
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'chart.title.bottom.size':14,
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'chart.title.bottom.color':'#333',
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'chart.title.bottom.bold':false,
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'chart.title.bottom.pos':null,
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'chart.text.font': 'Arial',
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'chart.text.color': '#666',
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'chart.text.size': 12,
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'chart.background.color': 'white',
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'chart.background.gradient': false,
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'chart.scale.decimals': 0,
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'chart.scale.point': '.',
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'chart.scale.thousand': ',',
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'chart.units.pre': '',
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'chart.units.post': '',
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'chart.value.text': false,
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'chart.value.text.y.pos': 0.5,
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'chart.value.text.units.pre': null,
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'chart.value.text.units.post': null,
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'chart.value.text.color': 'black',
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'chart.value.text.bounding': true,
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'chart.value.text.bounding.fill': 'white',
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'chart.value.text.bounding.stroke': 'black',
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'chart.red.start': 0.9 * this.max,
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'chart.red.color': '#DC3912',
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'chart.yellow.color': '#FF9900',
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'chart.green.end': 0.7 * this.max,
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'chart.green.color': 'rgba(0,0,0,0)',
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'chart.colors.ranges': null,
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'chart.needle.size': null,
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'chart.needle.tail': false,
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'chart.needle.colors': ['#D5604D', 'red', 'green', 'yellow'],
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'chart.needle.type': 'triangle',
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'chart.border.outer': '#ccc',
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'chart.border.inner': '#f1f1f1',
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'chart.border.outline': 'black',
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'chart.centerpin.color': 'blue',
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'chart.centerpin.radius': null,
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'chart.zoom.background': true,
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'chart.zoom.action': 'zoom',
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'chart.tickmarks.small': 25,
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'chart.tickmarks.small.color': 'black',
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'chart.tickmarks.medium': 0,
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'chart.tickmarks.medium.color': 'black',
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'chart.tickmarks.big': 5,
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'chart.tickmarks.big.color': 'black',
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'chart.labels.count': 5,
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'chart.labels.centered': false,
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'chart.labels.offset': 0,
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'chart.border.gradient': false,
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'chart.adjustable': false,
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'chart.shadow': true,
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'chart.shadow.color': 'gray',
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'chart.shadow.offsetx': 0,
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'chart.shadow.offsety': 0,
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'chart.shadow.blur': 15
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}
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/*
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* Translate half a pixel for antialiasing purposes - but only if it hasn't beeen
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* done already
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*/
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if (!this.canvas.__rgraph_aa_translated__) {
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this.context.translate(0.5,0.5);
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this.canvas.__rgraph_aa_translated__ = true;
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}
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// Short variable names
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var RG = RGraph,
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ca = this.canvas,
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co = ca.getContext('2d'),
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prop = this.properties,
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pa = RG.Path,
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pa2 = RG.path2,
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win = window,
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doc = document,
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ma = Math
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/**
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* "Decorate" the object with the generic effects if the effects library has been included
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*/
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if (RG.Effects && typeof RG.Effects.decorate === 'function') {
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RG.Effects.decorate(this);
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}
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/**
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* An all encompassing accessor
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*
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* @param string name The name of the property
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* @param mixed value The value of the property
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*/
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this.set =
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this.Set = function (name)
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{
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var value = typeof arguments[1] === 'undefined' ? null : arguments[1];
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/**
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* the number of arguments is only one and it's an
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* object - parse it for configuration data and return.
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*/
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if (arguments.length === 1 && typeof name === 'object') {
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RG.parseObjectStyleConfig(this, name);
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return this;
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}
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/**
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* This should be done first - prepend the propertyy name with "chart." if necessary
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*/
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if (name.substr(0,6) != 'chart.') {
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name = 'chart.' + name;
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}
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// Convert uppercase letters to dot+lower case letter
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name = name.replace(/([A-Z])/g, function (str)
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{
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return '.' + String(RegExp.$1).toLowerCase();
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});
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/**
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* Title compatibility
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*/
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if (name == 'chart.title') name = 'chart.title.top';
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if (name == 'chart.title.font') name = 'chart.title.top.font';
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if (name == 'chart.title.size') name = 'chart.title.top.size';
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if (name == 'chart.title.color') name = 'chart.title.top.color';
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if (name == 'chart.title.bold') name = 'chart.title.top.bold';
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// BC
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if (name == 'chart.needle.color') {
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name = 'chart.needle.colors';
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}
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prop[name] = value;
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return this;
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};
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/**
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* An all encompassing accessor
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*
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* @param string name The name of the property
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*/
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this.get =
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this.Get = function (name)
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{
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/**
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* This should be done first - prepend the property name with "chart." if necessary
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*/
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if (name.substr(0,6) != 'chart.') {
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name = 'chart.' + name;
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}
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// Convert uppercase letters to dot+lower case letter
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name = name.replace(/([A-Z])/g, function (str)
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{
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return '.' + String(RegExp.$1).toLowerCase()
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});
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// BC
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if (name == 'chart.needle.color') {
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name = 'chart.needle.colors';
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}
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return prop[name];
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};
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/**
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* The function you call to draw the line chart
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*
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* @param bool An optional bool used internally to ditinguish whether the
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* line chart is being called by the bar chart
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*/
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this.draw =
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this.Draw = function ()
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{
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/**
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* Fire the onbeforedraw event
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*/
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RG.FireCustomEvent(this, 'onbeforedraw');
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/**
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* Store the value (for animation primarily
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*/
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this.currentValue = this.value;
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/**
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* This is new in May 2011 and facilitates indiviual gutter settings,
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* eg chart.gutter.left
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*/
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this.gutterLeft = prop['chart.gutter.left'];
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this.gutterRight = prop['chart.gutter.right'];
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this.gutterTop = prop['chart.gutter.top'];
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this.gutterBottom = prop['chart.gutter.bottom'];
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this.centerx = ((ca.width - this.gutterLeft - this.gutterRight) / 2) + this.gutterLeft;
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this.centery = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;
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this.radius = Math.min(
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((ca.width - this.gutterLeft - this.gutterRight) / 2),
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((ca.height - this.gutterTop - this.gutterBottom) / 2)
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);
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this.startAngle = prop['chart.angles.start'] ? prop['chart.angles.start'] : (RG.HALFPI / 3) + RG.HALFPI;
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this.endAngle = prop['chart.angles.end'] ? prop['chart.angles.end'] : RG.TWOPI + RG.HALFPI - (RG.HALFPI / 3);
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/**
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* Reset this so it doesn't keep growing
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*/
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this.coordsText = [];
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/**
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* You can now override the positioning and radius if you so wish.
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*/
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if (typeof(prop['chart.centerx']) == 'number') this.centerx = prop['chart.centerx'];
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if (typeof(prop['chart.centery']) == 'number') this.centery = prop['chart.centery'];
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if (typeof(prop['chart.radius']) == 'number') this.radius = prop['chart.radius'];
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/**
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* Parse the colors. This allows for simple gradient syntax
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*/
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if (!this.colorsParsed) {
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this.parseColors();
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// Don't want to do this again
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this.colorsParsed = true;
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}
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// This has to be in the constructor
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this.centerpinRadius = 0.16 * this.radius;
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if (typeof(prop['chart.centerpin.radius']) == 'number') {
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this.centerpinRadius = prop['chart.centerpin.radius'];
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}
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/**
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* Setup the context menu if required
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*/
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if (prop['chart.contextmenu']) {
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RG.ShowContext(this);
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}
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// DRAW THE CHART HERE
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this.DrawBackGround();
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this.DrawGradient();
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this.DrawColorBands();
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this.DrawSmallTickmarks();
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this.DrawMediumTickmarks();
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this.DrawBigTickmarks();
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this.DrawLabels();
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this.DrawTopTitle();
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this.DrawBottomTitle();
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if (typeof(this.value) == 'object') {
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for (var i=0; i<this.value.length; ++i) {
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this.DrawNeedle(this.value[i], prop['chart.needle.colors'][i], i);
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}
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} else {
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this.DrawNeedle(this.value, prop['chart.needle.colors'][0], 0);
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}
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this.DrawCenterpin();
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/**
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* This function enables resizing
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*/
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if (prop['chart.resizable']) {
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RG.AllowResizing(this);
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}
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/**
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* This installs the event listeners
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*/
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RG.InstallEventListeners(this);
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/**
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* Fire the onfirstdraw event
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*/
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if (this.firstDraw) {
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RG.fireCustomEvent(this, 'onfirstdraw');
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this.firstDraw = false;
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this.firstDrawFunc();
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}
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/**
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* Fire the RGraph ondraw event
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*/
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RG.FireCustomEvent(this, 'ondraw');
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return this;
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};
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/**
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* Used in chaining. Runs a function there and then - not waiting for
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* the events to fire (eg the onbeforedraw event)
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*
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* @param function func The function to execute
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*/
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this.exec = function (func)
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{
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func(this);
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return this;
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};
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/**
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* Draw the background
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*/
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this.drawBackGround =
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this.DrawBackGround = function ()
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{
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// Shadow //////////////////////////////////////////////
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if (prop['chart.shadow']) {
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RG.SetShadow(this, prop['chart.shadow.color'], prop['chart.shadow.offsetx'], prop['chart.shadow.offsety'], prop['chart.shadow.blur']);
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}
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co.beginPath();
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co.fillStyle = prop['chart.background.color'];
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//co.moveTo(this.centerx, this.centery)
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co.arc(this.centerx, this.centery, this.radius, 0, RG.TWOPI, 0);
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co.fill();
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// Turn off the shadow
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RG.NoShadow(this);
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// Shadow //////////////////////////////////////////////
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var grad = co.createRadialGradient(this.centerx + 50, this.centery - 50, 0, this.centerx + 50, this.centery - 50, 150);
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grad.addColorStop(0, '#eee');
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grad.addColorStop(1, 'white');
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var borderWidth = prop['chart.border.width'];
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co.beginPath();
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co.fillStyle = prop['chart.background.color'];
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co.arc(this.centerx, this.centery, this.radius, 0, RG.TWOPI, 0);
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co.fill();
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/**
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* Draw the gray circle
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*/
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co.beginPath();
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co.fillStyle = prop['chart.border.outer'];
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co.arc(this.centerx, this.centery, this.radius, 0, RG.TWOPI, 0);
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co.fill();
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/**
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* Draw the light gray inner border
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*/
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co.beginPath();
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co.fillStyle = prop['chart.border.inner'];
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co.arc(this.centerx, this.centery, this.radius - borderWidth, 0, RG.TWOPI, 0);
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co.fill();
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// Draw the white circle inner border
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co.beginPath();
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co.fillStyle = prop['chart.background.color'];
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co.arc(this.centerx, this.centery, this.radius - borderWidth - 4, 0, RG.TWOPI, 0);
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co.fill();
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// Draw the circle background. Can be any colour now.
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co.beginPath();
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co.fillStyle = prop['chart.background.color'];
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co.arc(this.centerx, this.centery, this.radius - borderWidth - 4, 0, RG.TWOPI, 0);
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co.fill();
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if (prop['chart.background.gradient']) {
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// Draw a partially transparent gradient that sits on top of the background
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co.beginPath();
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co.fillStyle = RG.RadialGradient(this,
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this.centerx,
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this.centery,
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0,
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this.centerx,
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this.centery,
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this.radius,
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'rgba(255,255,255,0.6)',
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'rgba(255,255,255,0.1)');
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co.arc(this.centerx, this.centery, this.radius - borderWidth - 4, 0, RG.TWOPI, 0);
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co.fill();
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}
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// Draw a black border around the chart
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co.beginPath();
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co.strokeStyle = prop['chart.border.outline'];
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co.arc(this.centerx, this.centery, this.radius, 0, RG.TWOPI, 0);
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co.stroke();
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};
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/**
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* This function draws the smaller tickmarks
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*/
|
|
this.drawSmallTickmarks =
|
|
this.DrawSmallTickmarks = function ()
|
|
{
|
|
var numTicks = prop['chart.tickmarks.small'];
|
|
co.lineWidth = 1;
|
|
|
|
for (var i=0; i<=numTicks; ++i) {
|
|
co.beginPath();
|
|
co.strokeStyle = prop['chart.tickmarks.small.color'];
|
|
var a = (((this.endAngle - this.startAngle) / numTicks) * i) + this.startAngle;
|
|
co.arc(this.centerx, this.centery, this.radius - prop['chart.border.width'] - 10, a, a + 0.00001, 0);
|
|
co.arc(this.centerx, this.centery, this.radius - prop['chart.border.width'] - 10 - 5, a, a + 0.00001, 0);
|
|
co.stroke();
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the medium sized tickmarks
|
|
*/
|
|
this.drawMediumTickmarks =
|
|
this.DrawMediumTickmarks = function ()
|
|
{
|
|
if (prop['chart.tickmarks.medium']) {
|
|
|
|
var numTicks = prop['chart.tickmarks.medium'];
|
|
co.lineWidth = 3;
|
|
co.lineCap = 'round';
|
|
co.strokeStyle = prop['chart.tickmarks.medium.color'];
|
|
|
|
for (var i=0; i<=numTicks; ++i) {
|
|
co.beginPath();
|
|
var a = (((this.endAngle - this.startAngle) / numTicks) * i) + this.startAngle + (((this.endAngle - this.startAngle) / (2 * numTicks)));
|
|
|
|
if (a > this.startAngle && a< this.endAngle) {
|
|
co.arc(this.centerx, this.centery, this.radius - prop['chart.border.width'] - 10, a, a + 0.00001, 0);
|
|
co.arc(this.centerx, this.centery, this.radius - prop['chart.border.width'] - 10 - 6, a, a + 0.00001, 0);
|
|
}
|
|
co.stroke();
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the large, bold tickmarks
|
|
*/
|
|
this.drawBigTickmarks =
|
|
this.DrawBigTickmarks = function ()
|
|
{
|
|
var numTicks = prop['chart.tickmarks.big'];
|
|
co.lineWidth = 3;
|
|
co.lineCap = 'round';
|
|
|
|
for (var i=0; i<=numTicks; ++i) {
|
|
co.beginPath();
|
|
co.strokeStyle = prop['chart.tickmarks.big.color'];
|
|
var a = (((this.endAngle - this.startAngle) / numTicks) * i) + this.startAngle;
|
|
co.arc(this.centerx, this.centery, this.radius - prop['chart.border.width'] - 10, a, a + 0.00001, 0);
|
|
co.arc(this.centerx, this.centery, this.radius - prop['chart.border.width'] - 10 - 10, a, a + 0.00001, 0);
|
|
co.stroke();
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the centerpin
|
|
*/
|
|
this.drawCenterpin =
|
|
this.DrawCenterpin = function ()
|
|
{
|
|
var offset = 6;
|
|
|
|
var grad = co.createRadialGradient(this.centerx + offset, this.centery - offset, 0, this.centerx + offset, this.centery - offset, 25);
|
|
grad.addColorStop(0, '#ddf');
|
|
grad.addColorStop(1, prop['chart.centerpin.color']);
|
|
|
|
co.beginPath();
|
|
co.fillStyle = grad;
|
|
co.arc(this.centerx, this.centery, this.centerpinRadius, 0, RG.TWOPI, 0);
|
|
co.fill();
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the labels
|
|
*/
|
|
this.drawLabels =
|
|
this.DrawLabels = function ()
|
|
{
|
|
co.fillStyle = prop['chart.text.color'];
|
|
var font = prop['chart.text.font'];
|
|
var size = prop['chart.text.size'];
|
|
var num = prop['chart.labels.specific'] ? (prop['chart.labels.specific'].length - 1) : prop['chart.labels.count'];
|
|
|
|
co.beginPath();
|
|
for (var i=0; i<=num; ++i) {
|
|
var hyp = (this.radius - 25 - prop['chart.border.width']) - prop['chart.labels.offset'];
|
|
var a = (this.endAngle - this.startAngle) / num
|
|
a = this.startAngle + (i * a);
|
|
a -= RG.HALFPI;
|
|
|
|
var x = this.centerx - (Math.sin(a) * hyp);
|
|
var y = this.centery + (Math.cos(a) * hyp);
|
|
|
|
var hAlign = x > this.centerx ? 'right' : 'left';
|
|
var vAlign = y > this.centery ? 'bottom' : 'top';
|
|
|
|
// This handles the label alignment when the label is on a PI/HALFPI boundary
|
|
if (a == RG.HALFPI) {
|
|
vAlign = 'center';
|
|
} else if (a == RG.PI) {
|
|
hAlign = 'center';
|
|
} else if (a == (RG.HALFPI + RG.PI) ) {
|
|
vAlign = 'center';
|
|
}
|
|
|
|
/**
|
|
* Can now force center alignment
|
|
*/
|
|
if (prop['chart.labels.centered']) {
|
|
hAlign = 'center';
|
|
vAlign = 'center';
|
|
}
|
|
|
|
|
|
RG.Text2(this, {'font':font,
|
|
'size':size,
|
|
'x':x,
|
|
'y':y,
|
|
'text':prop['chart.labels.specific'] ? prop['chart.labels.specific'][i] : RG.number_format(this, (((this.max - this.min) * (i / num)) + this.min).toFixed(prop['chart.scale.decimals']), prop['chart.units.pre'], prop['chart.units.post']),
|
|
'halign':hAlign,
|
|
'valign':vAlign,
|
|
'tag': prop['chart.labels.specific'] ? 'labels.specific' : 'labels'
|
|
});
|
|
}
|
|
co.fill();
|
|
|
|
|
|
/**
|
|
* Draw the textual value if requested
|
|
*/
|
|
if (prop['chart.value.text']) {
|
|
|
|
var x = this.centerx;
|
|
var y = this.centery + (prop['chart.value.text.y.pos'] * this.radius);
|
|
|
|
var units_pre = typeof(prop['chart.value.text.units.pre']) == 'string' ? prop['chart.value.text.units.pre'] : prop['chart.units.pre'];
|
|
var units_post = typeof(prop['chart.value.text.units.post']) == 'string' ? prop['chart.value.text.units.post'] : prop['chart.units.post'];
|
|
var color = prop['chart.value.text.color'];
|
|
var bounding = prop['chart.value.text.bounding'];
|
|
var boundingFill = prop['chart.value.text.bounding.fill'];
|
|
var boundingStroke = prop['chart.value.text.bounding.stroke'];
|
|
|
|
co.fillStyle = color;
|
|
|
|
RG.text2(this, {
|
|
'font':font,
|
|
'size':size + 2,
|
|
'x':x,
|
|
'y':y,
|
|
'text':RG.number_format(this, this.value.toFixed(prop['chart.scale.decimals']), units_pre, units_post),
|
|
'halign':'center',
|
|
'valign':'center',
|
|
'bounding':bounding,
|
|
'bounding.fill':boundingFill,
|
|
'bounding.stroke': boundingStroke,
|
|
'tag': 'value.text'
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the top title
|
|
*/
|
|
this.drawTopTitle =
|
|
this.DrawTopTitle = function ()
|
|
{
|
|
var x = this.centerx;
|
|
var y = this.centery - 25;
|
|
|
|
// Totally override the calculated positioning
|
|
if (typeof(prop['chart.title.top.pos']) == 'number') {
|
|
y = this.centery - (this.radius * prop['chart.title.top.pos']);
|
|
}
|
|
|
|
if (prop['chart.title.top']) {
|
|
co.fillStyle = prop['chart.title.top.color'];
|
|
RG.Text2(this, {'font':prop['chart.title.top.font'],
|
|
'size':prop['chart.title.top.size'],
|
|
'x':x,
|
|
'y':y,
|
|
'text':String(prop['chart.title.top']),
|
|
'halign':'center',
|
|
'valign':'bottom',
|
|
'bold':prop['chart.title.top.bold'],
|
|
'tag': 'title.top'
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the bottom title
|
|
*/
|
|
this.drawBottomTitle =
|
|
this.DrawBottomTitle = function ()
|
|
{
|
|
var x = this.centerx;
|
|
var y = this.centery + this.centerpinRadius + 10;
|
|
|
|
// Totally override the calculated positioning
|
|
if (typeof(prop['chart.title.bottom.pos']) == 'number') {
|
|
y = this.centery + (this.radius * prop['chart.title.bottom.pos']);
|
|
}
|
|
|
|
if (prop['chart.title.bottom']) {
|
|
co.fillStyle = prop['chart.title.bottom.color'];
|
|
|
|
RG.Text2(this, {'font':prop['chart.title.bottom.font'],
|
|
'size':prop['chart.title.bottom.size'],
|
|
'x':x,
|
|
'y':y,
|
|
'text':String(prop['chart.title.bottom']),
|
|
'halign':'center',
|
|
'valign':'top',
|
|
'bold':prop['chart.title.bottom.bold'],
|
|
'tag': 'title.bottom'
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function draws the Needle
|
|
*
|
|
* @param number value The value to draw the needle for
|
|
*/
|
|
this.drawNeedle =
|
|
this.DrawNeedle = function (value, color, index)
|
|
{
|
|
var type = prop['chart.needle.type'];
|
|
|
|
co.lineWidth = 0.5;
|
|
co.strokeStyle = 'gray';
|
|
co.fillStyle = color;
|
|
|
|
var angle = (this.endAngle - this.startAngle) * ((value - this.min) / (this.max - this.min));
|
|
angle += this.startAngle;
|
|
|
|
|
|
// Work out the size of the needle
|
|
if ( typeof(prop['chart.needle.size']) == 'object'
|
|
&& prop['chart.needle.size']
|
|
&& typeof(prop['chart.needle.size'][index]) == 'number') {
|
|
|
|
var size = prop['chart.needle.size'][index];
|
|
|
|
} else if (typeof(prop['chart.needle.size']) == 'number') {
|
|
var size = prop['chart.needle.size'];
|
|
|
|
} else {
|
|
var size = this.radius - 25 - prop['chart.border.width'];
|
|
}
|
|
|
|
|
|
|
|
if (type == 'line') {
|
|
|
|
co.beginPath();
|
|
|
|
co.lineWidth = 7;
|
|
co.strokeStyle = color;
|
|
|
|
co.arc(this.centerx,
|
|
this.centery,
|
|
size,
|
|
angle,
|
|
angle + 0.0001,
|
|
false);
|
|
|
|
co.lineTo(this.centerx, this.centery);
|
|
|
|
if (prop['chart.needle.tail']) {
|
|
co.arc(this.centerx, this.centery, this.radius * 0.2 , angle + RG.PI, angle + 0.00001 + RG.PI, false);
|
|
}
|
|
|
|
co.lineTo(this.centerx, this.centery);
|
|
|
|
co.stroke();
|
|
//co.fill();
|
|
|
|
} else {
|
|
|
|
co.beginPath();
|
|
co.arc(this.centerx, this.centery, size, angle, angle + 0.00001, false);
|
|
co.arc(this.centerx, this.centery, this.centerpinRadius * 0.5, angle + RG.HALFPI, angle + 0.00001 + RG.HALFPI, false);
|
|
|
|
if (prop['chart.needle.tail']) {
|
|
co.arc(this.centerx, this.centery, this.radius * 0.2 , angle + RG.PI, angle + 0.00001 + RG.PI, false);
|
|
}
|
|
|
|
co.arc(this.centerx, this.centery, this.centerpinRadius * 0.5, angle - RG.HALFPI, angle - 0.00001 - RG.HALFPI, false);
|
|
co.stroke();
|
|
co.fill();
|
|
|
|
/**
|
|
* Store the angle in an object variable
|
|
*/
|
|
this.angle = angle;
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This draws the green background to the tickmarks
|
|
*/
|
|
this.drawColorBands =
|
|
this.DrawColorBands = function ()
|
|
{
|
|
if (RG.is_array(prop['chart.colors.ranges'])) {
|
|
|
|
var ranges = prop['chart.colors.ranges'];
|
|
|
|
for (var i=0; i<ranges.length; ++i) {
|
|
|
|
//co.strokeStyle = prop['chart.strokestyle'] ? prop['chart.strokestyle'] : ranges[i][2];
|
|
co.fillStyle = ranges[i][2];
|
|
co.lineWidth = 0;//prop['chart.linewidth.segments'];
|
|
|
|
co.beginPath();
|
|
co.arc(this.centerx,
|
|
this.centery,
|
|
this.radius - 10 - prop['chart.border.width'],
|
|
(((ranges[i][0] - this.min) / (this.max - this.min)) * (this.endAngle - this.startAngle)) + this.startAngle,
|
|
(((ranges[i][1] - this.min) / (this.max - this.min)) * (this.endAngle - this.startAngle)) + this.startAngle,
|
|
false);
|
|
|
|
co.arc(this.centerx,
|
|
this.centery,
|
|
this.radius - 20 - prop['chart.border.width'],
|
|
(((ranges[i][1] - this.min) / (this.max - this.min)) * (this.endAngle - this.startAngle)) + this.startAngle,
|
|
(((ranges[i][0] - this.min) / (this.max - this.min)) * (this.endAngle - this.startAngle)) + this.startAngle,
|
|
true);
|
|
co.closePath();
|
|
co.fill();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Draw the GREEN region
|
|
*/
|
|
co.strokeStyle = prop['chart.green.color'];
|
|
co.fillStyle = prop['chart.green.color'];
|
|
|
|
var greenStart = this.startAngle;
|
|
var greenEnd = this.startAngle + (this.endAngle - this.startAngle) * ((prop['chart.green.end'] - this.min) / (this.max - this.min))
|
|
|
|
co.beginPath();
|
|
co.arc(this.centerx, this.centery, this.radius - 10 - prop['chart.border.width'], greenStart, greenEnd, false);
|
|
co.arc(this.centerx, this.centery, this.radius - 20 - prop['chart.border.width'], greenEnd, greenStart, true);
|
|
co.fill();
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Draw the YELLOW region
|
|
*/
|
|
co.strokeStyle = prop['chart.yellow.color'];
|
|
co.fillStyle = prop['chart.yellow.color'];
|
|
|
|
var yellowStart = greenEnd;
|
|
var yellowEnd = this.startAngle + (this.endAngle - this.startAngle) * ((prop['chart.red.start'] - this.min) / (this.max - this.min))
|
|
|
|
co.beginPath();
|
|
co.arc(this.centerx, this.centery, this.radius - 10 - prop['chart.border.width'], yellowStart, yellowEnd, false);
|
|
co.arc(this.centerx, this.centery, this.radius - 20 - prop['chart.border.width'], yellowEnd, yellowStart, true);
|
|
co.fill();
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Draw the RED region
|
|
*/
|
|
co.strokeStyle = prop['chart.red.color'];
|
|
co.fillStyle = prop['chart.red.color'];
|
|
|
|
var redStart = yellowEnd;
|
|
var redEnd = this.startAngle + (this.endAngle - this.startAngle) * ((this.max - this.min) / (this.max - this.min))
|
|
|
|
co.beginPath();
|
|
co.arc(this.centerx, this.centery, this.radius - 10 - prop['chart.border.width'], redStart, redEnd, false);
|
|
co.arc(this.centerx, this.centery, this.radius - 20 - prop['chart.border.width'], redEnd, redStart, true);
|
|
co.fill();
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* A placeholder function
|
|
*
|
|
* @param object The event object
|
|
*/
|
|
this.getShape = function (e) {};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* A getValue method
|
|
*
|
|
* @param object e An event object
|
|
*/
|
|
this.getValue = function (e)
|
|
{
|
|
var mouseXY = RG.getMouseXY(e);
|
|
var mouseX = mouseXY[0];
|
|
var mouseY = mouseXY[1];
|
|
|
|
var angle = RG.getAngleByXY(this.centerx, this.centery, mouseX, mouseY);
|
|
|
|
if (angle >= 0 && angle <= RG.HALFPI) {
|
|
angle += RG.TWOPI;
|
|
}
|
|
|
|
var value = ((angle - this.startAngle) / (this.endAngle - this.startAngle)) * (this.max - this.min);
|
|
value = value + this.min;
|
|
|
|
if (value < this.min) {
|
|
value = this.min
|
|
}
|
|
|
|
if (value > this.max) {
|
|
value = this.max
|
|
}
|
|
|
|
return value;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* The getObjectByXY() worker method. Don't call this call:
|
|
*
|
|
* RGraph.ObjectRegistry.getObjectByXY(e)
|
|
*
|
|
* @param object e The event object
|
|
*/
|
|
this.getObjectByXY = function (e)
|
|
{
|
|
var mouseXY = RGraph.getMouseXY(e);
|
|
|
|
if (
|
|
mouseXY[0] > (this.centerx - this.radius)
|
|
&& mouseXY[0] < (this.centerx + this.radius)
|
|
&& mouseXY[1] > (this.centery - this.radius)
|
|
&& mouseXY[1] < (this.centery + this.radius)
|
|
&& RG.getHypLength(this.centerx, this.centery, mouseXY[0], mouseXY[1]) <= this.radius
|
|
) {
|
|
|
|
return this;
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This draws the gradient that goes around the Gauge chart
|
|
*/
|
|
this.drawGradient =
|
|
this.DrawGradient = function ()
|
|
{
|
|
if (prop['chart.border.gradient']) {
|
|
|
|
co.beginPath();
|
|
|
|
var grad = co.createRadialGradient(this.centerx, this.centery, this.radius, this.centerx, this.centery, this.radius - 15);
|
|
grad.addColorStop(0, 'gray');
|
|
grad.addColorStop(1, 'white');
|
|
|
|
co.fillStyle = grad;
|
|
co.arc(this.centerx, this.centery, this.radius, 0, RG.TWOPI, false)
|
|
co.arc(this.centerx, this.centery, this.radius - 15, RG.TWOPI,0, true)
|
|
co.fill();
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This method handles the adjusting calculation for when the mouse is moved
|
|
*
|
|
* @param object e The event object
|
|
*/
|
|
this.adjusting_mousemove =
|
|
this.Adjusting_mousemove = function (e)
|
|
{
|
|
/**
|
|
* Handle adjusting for the Bar
|
|
*/
|
|
if (prop['chart.adjustable'] && RG.Registry.Get('chart.adjusting') && RG.Registry.Get('chart.adjusting').uid == this.uid) {
|
|
this.value = this.getValue(e);
|
|
//RG.Clear(this.canvas);
|
|
RG.redrawCanvas(this.canvas);
|
|
RG.fireCustomEvent(this, 'onadjust');
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This method returns an appropriate angle for the given value (in RADIANS)
|
|
*
|
|
* @param number value The value to get the angle for
|
|
*/
|
|
this.getAngle = function (value)
|
|
{
|
|
// Higher than max
|
|
if (value > this.max || value < this.min) {
|
|
return null;
|
|
}
|
|
|
|
//var value = ((angle - this.startAngle) / (this.endAngle - this.startAngle)) * (this.max - this.min);
|
|
//value = value + this.min;
|
|
|
|
var angle = (((value - this.min) / (this.max - this.min)) * (this.endAngle - this.startAngle)) + this.startAngle;
|
|
|
|
return angle;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This allows for easy specification of gradients. Could optimise this not to repeatedly call parseSingleColors()
|
|
*/
|
|
this.parseColors = function ()
|
|
{
|
|
// Save the original colors so that they can be restored when the canvas is reset
|
|
if (this.original_colors.length === 0) {
|
|
this.original_colors['chart.background.color'] = RG.array_clone(prop['chart.background.color']);
|
|
this.original_colors['chart.red.color'] = RG.array_clone(prop['chart.red.color']);
|
|
this.original_colors['chart.yellow.color'] = RG.array_clone(prop['chart.yellow.color']);
|
|
this.original_colors['chart.green.color'] = RG.array_clone(prop['chart.green.color']);
|
|
this.original_colors['chart.border.inner'] = RG.array_clone(prop['chart.border.inner']);
|
|
this.original_colors['chart.border.outer'] = RG.array_clone(prop['chart.border.outer']);
|
|
this.original_colors['chart.colors.ranges'] = RG.array_clone(prop['chart.colors.ranges']);
|
|
this.original_colors['chart.needle.colors'] = RG.array_clone(prop['chart.needle.colors']);
|
|
}
|
|
|
|
prop['chart.background.color'] = this.parseSingleColorForGradient(prop['chart.background.color']);
|
|
prop['chart.red.color'] = this.parseSingleColorForGradient(prop['chart.red.color']);
|
|
prop['chart.yellow.color'] = this.parseSingleColorForGradient(prop['chart.yellow.color']);
|
|
prop['chart.green.color'] = this.parseSingleColorForGradient(prop['chart.green.color']);
|
|
prop['chart.border.inner'] = this.parseSingleColorForGradient(prop['chart.border.inner']);
|
|
prop['chart.border.outer'] = this.parseSingleColorForGradient(prop['chart.border.outer']);
|
|
|
|
// Parse the chart.color.ranges value
|
|
if (prop['chart.colors.ranges']) {
|
|
|
|
var ranges = prop['chart.colors.ranges'];
|
|
|
|
for (var i=0; i<ranges.length; ++i) {
|
|
ranges[i][2] = this.parseSingleColorForGradient(ranges[i][2], this.radius - 30);
|
|
}
|
|
}
|
|
|
|
// Parse the chart.needle.colors value
|
|
if (prop['chart.needle.colors']) {
|
|
|
|
var colors = prop['chart.needle.colors'];
|
|
|
|
for (var i=0; i<colors.length; ++i) {
|
|
colors[i] = this.parseSingleColorForGradient(colors[i]);
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Use this function to reset the object to the post-constructor state. Eg reset colors if
|
|
* need be etc
|
|
*/
|
|
this.reset = function ()
|
|
{
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This parses a single color value
|
|
*
|
|
* @param string color The color to look for a gradient in
|
|
* @param radius OPTIONAL The start radius to start the gradient at.
|
|
* If not suppllied the centerx value is used
|
|
*/
|
|
this.parseSingleColorForGradient = function (color)
|
|
{
|
|
var radiusStart = arguments[1] || 0;
|
|
|
|
if (!color || typeof(color) != 'string') {
|
|
return color;
|
|
}
|
|
|
|
if (color.match(/^gradient\((.*)\)$/i)) {
|
|
|
|
var parts = RegExp.$1.split(':');
|
|
|
|
// Create the gradient
|
|
var grad = co.createRadialGradient(this.centerx,
|
|
this.centery,
|
|
radiusStart,
|
|
this.centerx,
|
|
this.centery,
|
|
this.radius
|
|
);
|
|
|
|
var diff = 1 / (parts.length - 1);
|
|
|
|
grad.addColorStop(0, RG.trim(parts[0]));
|
|
|
|
for (var j=1; j<parts.length; ++j) {
|
|
grad.addColorStop(j * diff, RG.trim(parts[j]));
|
|
}
|
|
}
|
|
|
|
return grad ? grad : color;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Using a function to add events makes it easier to facilitate method chaining
|
|
*
|
|
* @param string type The type of even to add
|
|
* @param function func
|
|
*/
|
|
this.on = function (type, func)
|
|
{
|
|
if (type.substr(0,2) !== 'on') {
|
|
type = 'on' + type;
|
|
}
|
|
|
|
this[type] = func;
|
|
|
|
return this;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function runs once only
|
|
* (put at the end of the file (before any effects))
|
|
*/
|
|
this.firstDrawFunc = function ()
|
|
{
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Gauge Grow
|
|
*
|
|
* This effect gradually increases the represented value
|
|
*
|
|
* @param object Options for the effect. You can pass frames here
|
|
* @param function An optional callback function
|
|
*/
|
|
this.grow = function ()
|
|
{
|
|
var obj = this;
|
|
var opt = arguments[0] ? arguments[0] : {};
|
|
var callback = arguments[1] ? arguments[1] : function () {};
|
|
var frames = opt.frames || 30;
|
|
var frame = 0;
|
|
|
|
// Single pointer
|
|
if (typeof obj.value === 'number') {
|
|
|
|
var origValue = Number(obj.currentValue);
|
|
|
|
if (obj.currentValue == null) {
|
|
obj.currentValue = obj.min;
|
|
origValue = obj.min;
|
|
}
|
|
|
|
var newValue = obj.value;
|
|
var diff = newValue - origValue;
|
|
|
|
|
|
var iterator = function ()
|
|
{
|
|
obj.value = ((frame / frames) * diff) + origValue;
|
|
|
|
if (obj.value > obj.max) obj.value = obj.max;
|
|
if (obj.value < obj.min) obj.value = obj.min;
|
|
|
|
//RGraph.clear(obj.canvas);
|
|
RG.redrawCanvas(obj.canvas);
|
|
|
|
if (frame++ < frames) {
|
|
RG.Effects.updateCanvas(iterator);
|
|
} else {
|
|
callback(obj);
|
|
}
|
|
};
|
|
|
|
iterator();
|
|
|
|
|
|
|
|
/**
|
|
* Multiple pointers
|
|
*/
|
|
} else {
|
|
|
|
if (obj.currentValue == null) {
|
|
obj.currentValue = [];
|
|
|
|
for (var i=0; i<obj.value.length; ++i) {
|
|
obj.currentValue[i] = obj.min;
|
|
}
|
|
|
|
origValue = RG.array_clone(obj.currentValue);
|
|
}
|
|
|
|
var origValue = RG.array_clone(obj.currentValue);
|
|
var newValue = RG.array_clone(obj.value);
|
|
var diff = [];
|
|
|
|
for (var i=0,len=newValue.length; i<len; ++i) {
|
|
diff[i] = newValue[i] - Number(obj.currentValue[i]);
|
|
}
|
|
|
|
|
|
|
|
var iterator = function ()
|
|
{
|
|
frame++;
|
|
|
|
for (var i=0,len=obj.value.length; i<len; ++i) {
|
|
|
|
obj.value[i] = ((frame / frames) * diff[i]) + origValue[i];
|
|
|
|
if (obj.value[i] > obj.max) obj.value[i] = obj.max;
|
|
if (obj.value[i] < obj.min) obj.value[i] = obj.min;
|
|
}
|
|
|
|
//RG.clear(obj.canvas);
|
|
RG.redrawCanvas(obj.canvas);
|
|
|
|
|
|
if (frame < frames) {
|
|
RG.Effects.updateCanvas(iterator);
|
|
} else {
|
|
callback(obj);
|
|
}
|
|
};
|
|
|
|
iterator();
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
|
|
|
|
RG.att(ca);
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Register the object
|
|
*/
|
|
RG.Register(this);
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This is the 'end' of the constructor so if the first argument
|
|
* contains configuration data - handle that.
|
|
*/
|
|
if (parseConfObjectForOptions) {
|
|
RG.parseObjectStyleConfig(this, conf.options);
|
|
}
|
|
}; |