mirror of
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1131 lines
37 KiB
JavaScript
1131 lines
37 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 chart constructor. This function sets up the object. It takes the ID (the HTML attribute) of the canvas as the
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* first argument and the data as the second. If you need to change this, you can.
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*
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* NB: If tooltips are ever implemented they must go below the use event listeners!!
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*
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* @param string id The canvas tag ID
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* @param number min The minimum value
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* @param number max The maximum value
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* @param number value The value reported by the thermometer
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*/
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RGraph.Thermometer = 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 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 conf = {
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id: arguments[0],
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min: arguments[1],
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max: arguments[2],
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value: arguments[3]
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}
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}
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this.id = conf.id;
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this.canvas = document.getElementById(this.id);
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this.context = this.canvas.getContext ? this.canvas.getContext('2d') : null;
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this.canvas.__object__ = this;
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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.type = 'thermometer';
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this.isRGraph = true;
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this.min = conf.min;
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this.max = conf.max;
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this.value = RGraph.stringsToNumbers(conf.value);
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this.coords = [];
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this.graphArea = [];
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this.currentValue = null;
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this.bulbRadius = 0;
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this.bulbTopRadius = 0;
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this.bulbTopCenterX = 0
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this.bulbTopCenterY = 0;
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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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this.properties =
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{
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'chart.strokestyle': 'black',
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'chart.colors': ['Gradient(#c00:red:#f66:#fcc)'],
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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.ticksize': 3,
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'chart.text.color': 'black',
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'chart.text.font': 'Arial',
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'chart.text.size': 12,
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'chart.units.pre': '',
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'chart.units.post': '',
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'chart.zoom.factor': 1.5,
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'chart.zoom.fade.in': true,
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'chart.zoom.fade.out': true,
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'chart.zoom.hdir': 'right',
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'chart.zoom.vdir': 'down',
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'chart.zoom.frames': 25,
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'chart.zoom.delay': 16.666,
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'chart.zoom.shadow': true,
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'chart.zoom.background': true,
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'chart.title': '',
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'chart.title.side': '',
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'chart.title.side.bold': true,
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'chart.title.side.font': null,
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'chart.shadow': true,
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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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'chart.shadow.color': 'gray',
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'chart.resizable': false,
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'chart.contextmenu': null,
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'chart.adjustable': false,
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'chart.value.label': true,
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'chart.value.label.decimals': null,
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'chart.value.label.thousand': ',',
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'chart.value.label.point': '.',
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'chart.labels.count': 5,
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'chart.scale.visible': false,
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'chart.scale.decimals': 0,
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'chart.annotatable': false,
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'chart.annotate.color': 'black',
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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.tooltips': null,
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'chart.tooltips.highlight': true,
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'chart.tooltips.effect': 'fade',
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'chart.tooltips.event': 'onclick',
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'chart.highlight.stroke': 'rgba(0,0,0,0)',
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'chart.highlight.fill': 'rgba(255,255,255,0.7)'
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}
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/**
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* A simple check that the browser has canvas support
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*/
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if (!this.canvas) {
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alert('[THERMOMETER] No canvas support');
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return;
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}
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/**
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* The thermometer can only have one data point so only this.$0 needs to be created
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*/
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this.$0 = {}
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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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* A setter.
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*
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* @param name string The name of the property to set
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* @param value mixed 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 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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/**
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* Change of name
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*/
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if (name == 'chart.ylabels.count') {
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name = 'chart.labels.count';
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}
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prop[name.toLowerCase()] = value;
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return this;
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};
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/**
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* A getter.
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*
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* @param name string The name of the property to get
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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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return prop[name];
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};
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/**
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* Draws the thermometer
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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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// Fire the custom RGraph onbeforedraw event (which should be fired before the chart is drawn)
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RG.fireCustomEvent(this, 'onbeforedraw');
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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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/**
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* Set the current value
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*/
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this.currentValue = this.value;
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/**
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* Stop this growing uncontrollably
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*/
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this.coordsText = [];
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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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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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// Get the scale
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this.scale2 = RG.getScale2(
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this, {
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'max':this.max,
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'min':this.min,
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'strict':true,
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'scale.thousand':prop['chart.scale.thousand'],
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'scale.point':prop['chart.scale.point'],
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'scale.decimals':prop['chart.scale.decimals'],
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'ylabels.count':prop['chart.labels.count'],
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'scale.round':prop['chart.scale.round'],
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'units.pre': prop['chart.units.pre'],
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'units.post': prop['chart.units.post']
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}
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);
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// Draw the background
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this.drawBackground();
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// Draw the bar that represents the value
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this.drawBar();
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// Draw the tickmarks
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this.drawTickMarks();
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/**
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* Draw the label
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*/
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this.DrawLabels();
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/**
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* Draw the title
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*/
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if (prop['chart.title']) {
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this.DrawTitle();
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}
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/**
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* Draw the side title
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*/
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if (prop['chart.title.side']) {
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this.DrawSideTitle();
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}
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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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* 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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/**
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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 custom RGraph ondraw event (which should be fired when you have drawn the chart)
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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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* Draws the thermometer itself
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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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var bulbRadius = (ca.width - this.gutterLeft - this.gutterRight) / 2;
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// This is the radius/x/y of the top "semi-circle"
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this.bulbTopRadius = (ca.width - this.gutterLeft - this.gutterRight - 24)/ 2
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this.bulbTopCenterX = this.gutterLeft + bulbRadius;
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this.bulbTopCenterY = this.gutterTop + bulbRadius;
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//This is the radius/x/y of the bottom bulb
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this.bulbBottomRadius = bulbRadius;
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this.bulbBottomCenterX = this.gutterLeft + bulbRadius;
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this.bulbBottomCenterY = ca.height - this.gutterBottom - bulbRadius;
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// Save the bulbRadius as an object variable
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this.bulbRadius = bulbRadius;
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// Draw the black background that becomes the border
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co.beginPath();
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co.fillStyle = prop['chart.strokestyle'];
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if (prop['chart.shadow']) {
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RG.setShadow(
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this,
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prop['chart.shadow.color'],
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prop['chart.shadow.offsetx'],
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prop['chart.shadow.offsety'],
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prop['chart.shadow.blur']
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);
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}
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co.fillRect(this.gutterLeft + 12,this.gutterTop + bulbRadius,ca.width - this.gutterLeft - this.gutterRight - 24, ca.height - this.gutterTop - this.gutterBottom - bulbRadius - bulbRadius);
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// Bottom bulb
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co.arc(this.bulbBottomCenterX, this.bulbBottomCenterY, bulbRadius, 0, RG.TWOPI, 0);
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// Top bulb (which is actually a semi-circle)
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co.arc(this.bulbTopCenterX,this.bulbTopCenterY,this.bulbTopRadius,0,RG.TWOPI,0);
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co.fill();
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// Save the radius of the top semi circle
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RG.NoShadow(this);
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// Draw the white inner content background that creates the border
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co.beginPath();
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co.fillStyle = 'white';
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co.fillRect(this.gutterLeft + 12 + 1,this.gutterTop + bulbRadius,ca.width - this.gutterLeft - this.gutterRight - 24 - 2,ca.height - this.gutterTop - this.gutterBottom - bulbRadius - bulbRadius);
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co.arc(this.gutterLeft + bulbRadius, ca.height - this.gutterBottom - bulbRadius, bulbRadius - 1, 0, RG.TWOPI, 0);
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co.arc(this.gutterLeft + bulbRadius,this.gutterTop + bulbRadius,((ca.width - this.gutterLeft - this.gutterRight - 24)/ 2) - 1,0,RG.TWOPI,0);
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co.fill();
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// Draw the bottom content of the thermometer
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co.beginPath();
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co.fillStyle = prop['chart.colors'][0];
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co.arc(this.gutterLeft + bulbRadius, ca.height - this.gutterBottom - bulbRadius, bulbRadius - 1, 0, RG.TWOPI, 0);
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co.rect(this.gutterLeft + 12 + 1, ca.height - this.gutterBottom - bulbRadius - bulbRadius,ca.width - this.gutterLeft - this.gutterRight - 24 - 2, bulbRadius);
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co.fill();
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// Save the X/Y/width/height
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this.graphArea[0] = this.gutterLeft + 12 + 1;
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this.graphArea[1] = this.gutterTop + bulbRadius;
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this.graphArea[2] = ca.width - this.gutterLeft - this.gutterRight - 24 - 2;
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this.graphArea[3] = (ca.height - this.gutterBottom - bulbRadius - bulbRadius) - (this.graphArea[1]);
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};
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/**
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* This draws the bar that indicates the value of the thermometer
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*/
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this.drawBar =
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this.DrawBar = function ()
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{
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var barHeight = ((this.value - this.min) / (this.max - this.min)) * this.graphArea[3];
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// Draw the actual bar that indicates the value
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co.beginPath();
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co.fillStyle = prop['chart.colors'][0];
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// This solves an issue with ExCanvas showing a whiite cutout in the chart
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if (RGraph.ISOLD) {
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co.arc(this.bulbBottomCenterX, this.bulbBottomCenterY, this.bulbBottomRadius - 1, 0, RG.TWOPI, false)
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}
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co.rect(this.graphArea[0],
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this.graphArea[1] + this.graphArea[3] - barHeight,
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this.graphArea[2],
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barHeight + 2);
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co.fill();
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this.coords[0] = [this.graphArea[0],this.graphArea[1] + this.graphArea[3] - barHeight,this.graphArea[2],barHeight];
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};
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/**
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* Draws the tickmarks of the thermometer
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*/
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this.drawTickMarks =
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this.DrawTickMarks = function ()
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{
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co.strokeStyle = prop['chart.strokestyle']
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var ticksize = prop['chart.ticksize'];
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// Left hand side tickmarks
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co.beginPath();
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for (var i=this.graphArea[1]; i<=(this.graphArea[1] + this.graphArea[3]); i += (this.graphArea[3] / 10)) {
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co.moveTo(this.gutterLeft + 12, Math.round(i));
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co.lineTo(this.gutterLeft + 12 + ticksize, Math.round(i));
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}
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co.stroke();
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// Right hand side tickmarks
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co.beginPath();
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for (var i=this.graphArea[1]; i<=(this.graphArea[1] + this.graphArea[3]); i += (this.graphArea[3] / 10)) {
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co.moveTo(ca.width - (this.gutterRight + 12), Math.round(i));
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co.lineTo(ca.width - (this.gutterRight + 12 + ticksize), Math.round(i));
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}
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co.stroke();
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};
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/**
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* Draws the labels of the thermometer. Now (4th August 2011) draws
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* the scale too
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*/
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this.drawLabels =
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this.DrawLabels = function ()
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{
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/**
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* This draws draws the label that sits at the top of the chart
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*/
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if (prop['chart.value.label']) {
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co.fillStyle = prop['chart.text.color'];
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// Weird...
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var text = prop['chart.scale.visible'] ? RG.number_format(this,
|
|
this.value.toFixed(typeof prop['chart.value.label.decimals'] == 'number' ? prop['chart.value.label.decimals'] : prop['chart.scale.decimals'])
|
|
)
|
|
:
|
|
RG.number_format(this,
|
|
this.value.toFixed(typeof prop['chart.value.label.decimals'] == 'number' ? prop['chart.value.label.decimals'] : prop['chart.scale.decimals']),
|
|
prop['chart.units.pre'],
|
|
prop['chart.units.post']
|
|
);
|
|
|
|
RG.Text2(this, {'font': prop['chart.text.font'],
|
|
'size': prop['chart.text.size'],
|
|
'x':this.gutterLeft + this.bulbRadius,
|
|
'y': this.coords[0][1] + 7,
|
|
'text': text,
|
|
'valign':'top',
|
|
'halign':'center',
|
|
'bounding':true,
|
|
'boundingFill':'white',
|
|
'tag': 'value.label'
|
|
});
|
|
}
|
|
|
|
|
|
/**
|
|
* Draw the scale if requested
|
|
*/
|
|
if (prop['chart.scale.visible']) {
|
|
this.DrawScale();
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Draws the title
|
|
*/
|
|
this.drawTitle =
|
|
this.DrawTitle = function ()
|
|
{
|
|
co.fillStyle = prop['chart.text.color'];
|
|
RG.Text2(this, {'font': prop['chart.text.font'],
|
|
'size': prop['chart.text.size'] + 2,
|
|
'x':this.gutterLeft + ((ca.width - this.gutterLeft - this.gutterRight) / 2),
|
|
'y': this.gutterTop,
|
|
'text': String(prop['chart.title']),
|
|
'valign':'center',
|
|
'halign':'center',
|
|
'bold':true,
|
|
'tag': 'title'
|
|
});
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Draws the title
|
|
*/
|
|
this.drawSideTitle =
|
|
this.DrawSideTitle = function ()
|
|
{
|
|
var font = prop['chart.title.side.font'] ? prop['chart.title.side.font'] : prop['chart.text.font'];
|
|
var size = prop['chart.title.side.size'] ? prop['chart.title.side.size'] : prop['chart.text.size'] + 2;
|
|
|
|
co.fillStyle = prop['chart.text.color'];
|
|
RG.Text2(this, {'font': font,
|
|
'size': size + 2,
|
|
'x':this.gutterLeft - 3,
|
|
'y': ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop,
|
|
'text': String(prop['chart.title.side']),
|
|
'valign':'center',
|
|
'halign':'center',
|
|
'angle':270,
|
|
'bold':prop['chart.title.side.bold'],
|
|
'tag': 'title.side'
|
|
});
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Draw the scale if requested
|
|
*/
|
|
this.drawScale =
|
|
this.DrawScale = function ()
|
|
{
|
|
var numLabels = prop['chart.labels.count']; // The -1 is so that the number of labels tallies with what is displayed
|
|
var step = (this.max - this.min) / numLabels;
|
|
|
|
co.fillStyle = prop['chart.text.color'];
|
|
|
|
var font = prop['chart.text.font'];
|
|
var size = prop['chart.text.size'];
|
|
var units_pre = prop['chart.units.pre'];
|
|
var units_post = prop['chart.units.post'];
|
|
var decimals = prop['chart.scale.decimals'];
|
|
|
|
for (var i=1; i<=numLabels; ++i) {
|
|
|
|
var x = ca.width - this.gutterRight;
|
|
var y = ca.height - this.gutterBottom - (2 * this.bulbRadius) - ((this.graphArea[3] / numLabels) * i);
|
|
var text = RG.number_format(this, String((this.min + (i * step)).toFixed(decimals)), units_pre, units_post);
|
|
|
|
RG.Text2(this, {'font':font,
|
|
'size':size,
|
|
'x':x-6,
|
|
'y':y,
|
|
'text':text,
|
|
'valign':'center',
|
|
'tag': 'scale'
|
|
});
|
|
}
|
|
|
|
// Draw zero
|
|
RG.Text2(this, {'font':font,
|
|
'size':size,
|
|
'x':x-6,
|
|
'y':ca.height - this.gutterBottom - (2 * this.bulbRadius),
|
|
'text':RG.number_format(this, (this.min).toFixed(decimals),units_pre,units_post),
|
|
'valign':'center',
|
|
'tag': 'scale'
|
|
});
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Returns the focused/clicked bar
|
|
*
|
|
* @param event e The event object
|
|
*/
|
|
this.getShape =
|
|
this.getBar = function (e)
|
|
{
|
|
for (var i=0; i<this.coords.length; i++) {
|
|
|
|
var mouseCoords = RGraph.getMouseXY(e);
|
|
var mouseX = mouseCoords[0];
|
|
var mouseY = mouseCoords[1];
|
|
|
|
var left = this.coords[i][0];
|
|
var top = this.coords[i][1];
|
|
var width = this.coords[i][2];
|
|
var height = this.coords[i][3];
|
|
|
|
if ( (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height + this.bulbBottomRadius)) // The bulbBottomRadius is added as the rect and the bulb don't fully cover the red bit
|
|
|| RG.getHypLength(this.bulbBottomCenterX, this.bulbBottomCenterY, mouseX, mouseY) <= this.bulbBottomRadius) {
|
|
|
|
|
|
var tooltip = RG.parseTooltipText ? RG.parseTooltipText(prop['chart.tooltips'], i) : '';
|
|
|
|
|
|
return {0: this, 'object': this,
|
|
1: left, 'x': left,
|
|
2: top, 'y': top,
|
|
3: width, 'width': width,
|
|
4: height, 'height': height,
|
|
5: i, 'index': i,
|
|
'tooltip': tooltip
|
|
};
|
|
}
|
|
}
|
|
|
|
return null;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function returns the value that the mouse is positioned t, regardless of
|
|
* the actual indicated value.
|
|
*
|
|
* @param object e The event object (or it can also be an two element array containing the X/Y coords)
|
|
*/
|
|
this.getValue = function (arg)
|
|
{
|
|
if (arg.length == 2) {
|
|
var mouseX = arg[0];
|
|
var mouseY = arg[1];
|
|
} else {
|
|
var mouseCoords = RGraph.getMouseXY(arg);
|
|
var mouseX = mouseCoords[0];
|
|
var mouseY = mouseCoords[1];
|
|
}
|
|
|
|
|
|
|
|
var value = this.graphArea[3] - (mouseY - this.graphArea[1]);
|
|
value = (value / this.graphArea[3]) * (this.max - this.min);
|
|
value = value + this.min;
|
|
|
|
value = Math.max(value, this.min);
|
|
value = Math.min(value, this.max);
|
|
|
|
return value;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Each object type has its own Highlight() function which highlights the appropriate shape
|
|
*
|
|
* @param object shape The shape to highlight
|
|
*/
|
|
this.highlight =
|
|
this.Highlight = function (shape)
|
|
{
|
|
if (prop['chart.tooltips.highlight']) {
|
|
|
|
// Add the new highlight
|
|
//RGraph.Highlight.Rect(this, shape);
|
|
|
|
co.beginPath();
|
|
co.strokeStyle = prop['chart.highlight.stroke'];
|
|
co.fillStyle = prop['chart.highlight.fill'];
|
|
co.rect(shape['x'],shape['y'],shape['width'],shape['height'] + this.bulbBottomRadius);
|
|
co.arc(this.bulbBottomCenterX, this.bulbBottomCenterY, this.bulbBottomRadius - 1, 0, RG.TWOPI, false);
|
|
co.stroke;
|
|
co.fill();
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* 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.gutterLeft
|
|
&& mouseXY[0] < (ca.width - this.gutterRight)
|
|
&& mouseXY[1] >= this.gutterTop
|
|
&& mouseXY[1] <= (ca.height - this.gutterBottom)
|
|
) {
|
|
|
|
return this;
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* 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 Thermometer
|
|
*/
|
|
if (prop['chart.adjustable'] && RG.Registry.Get('chart.adjusting') && RG.Registry.Get('chart.adjusting').uid == this.uid) {
|
|
|
|
var mouseXY = RGraph.getMouseXY(e);
|
|
var value = this.getValue(e);
|
|
|
|
if (typeof(value) == 'number') {
|
|
|
|
// Fire the onadjust event
|
|
RG.FireCustomEvent(this, 'onadjust');
|
|
|
|
this.value = Number(value.toFixed(prop['chart.scale.decimals']));
|
|
|
|
RG.redrawCanvas(ca);
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This function positions a tooltip when it is displayed
|
|
*
|
|
* @param obj object The chart object
|
|
* @param int x The X coordinate specified for the tooltip
|
|
* @param int y The Y coordinate specified for the tooltip
|
|
* @param objec tooltip The tooltips DIV element
|
|
*/
|
|
this.positionTooltip = function (obj, x, y, tooltip, idx)
|
|
{
|
|
var coordX = obj.coords[tooltip.__index__][0];
|
|
var coordY = obj.coords[tooltip.__index__][1];
|
|
var coordW = obj.coords[tooltip.__index__][2];
|
|
var coordH = obj.coords[tooltip.__index__][3];
|
|
var canvasXY = RGraph.getCanvasXY(ca);
|
|
var gutterLeft = obj.gutterLeft;
|
|
var gutterTop = obj.gutterTop;
|
|
var width = tooltip.offsetWidth;
|
|
var height = tooltip.offsetHeight;
|
|
|
|
// Set the top position
|
|
tooltip.style.left = 0;
|
|
tooltip.style.top = canvasXY[1] + coordY - height - 7 + 'px';
|
|
|
|
// By default any overflow is hidden
|
|
tooltip.style.overflow = '';
|
|
|
|
// The arrow
|
|
var img = new Image();
|
|
img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAFCAYAAACjKgd3AAAARUlEQVQYV2NkQAN79+797+RkhC4M5+/bd47B2dmZEVkBCgcmgcsgbAaA9GA1BCSBbhAuA/AagmwQPgMIGgIzCD0M0AMMAEFVIAa6UQgcAAAAAElFTkSuQmCC';
|
|
img.style.position = 'absolute';
|
|
img.id = '__rgraph_tooltip_pointer__';
|
|
img.style.top = (tooltip.offsetHeight - 2) + 'px';
|
|
tooltip.appendChild(img);
|
|
|
|
// Reposition the tooltip if at the edges:
|
|
|
|
// LEFT edge
|
|
if ((canvasXY[0] + coordX - (width / 2)) < 10) {
|
|
tooltip.style.left = (canvasXY[0] + coordX - (width * 0.1)) + (coordW / 2) + 'px';
|
|
img.style.left = ((width * 0.1) - 8.5) + 'px';
|
|
|
|
// RIGHT edge
|
|
} else if ((canvasXY[0] + coordX + (width / 2)) > doc.body.offsetWidth) {
|
|
tooltip.style.left = canvasXY[0] + coordX - (width * 0.9) + (coordW / 2) + 'px';
|
|
img.style.left = ((width * 0.9) - 8.5) + 'px';
|
|
|
|
// Default positioning - CENTERED
|
|
} else {
|
|
tooltip.style.left = (canvasXY[0] + coordX + (coordW / 2) - (width * 0.5)) + 'px';
|
|
img.style.left = ((width * 0.5) - 8.5) + 'px';
|
|
}
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Returns the appropriate Y coord for a value
|
|
*
|
|
* @param number value The value to return the coord for
|
|
*/
|
|
this.getYCoord = function (value)
|
|
{
|
|
if (value > this.max || value < this.min) {
|
|
return null;
|
|
}
|
|
|
|
var y = (this.graphArea[1] + this.graphArea[3]) - (((value - this.min) / (this.max - this.min)) * this.graphArea[3]);
|
|
|
|
return y;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This returns true/false as to whether the cursor is over the chart area.
|
|
* The cursor does not necessarily have to be over the bar itself.
|
|
*/
|
|
this.overChartArea = function (e)
|
|
{
|
|
var mouseXY = RG.getMouseXY(e);
|
|
var mouseX = mouseXY[0];
|
|
var mouseY = mouseXY[1];
|
|
|
|
// Is the mouse in the "graphArea"?
|
|
// ( with a little extra height added)
|
|
if ( mouseX >= this.graphArea[0]
|
|
&& mouseX <= (this.graphArea[0] + this.graphArea[2])
|
|
&& mouseY >= this.graphArea[1]
|
|
&& mouseY <= (this.graphArea[1] + this.graphArea[3] + this.bulbRadius)
|
|
) {
|
|
|
|
return true;
|
|
}
|
|
|
|
// Is the mouse over the bottom bulb?
|
|
if (RG.getHypLength(this.bulbBottomCenterX, this.bulbBottomCenterY, mouseX, mouseY) <= this.bulbRadius) {
|
|
return true;
|
|
}
|
|
|
|
// Is the mouse over the semi-circle at the top?
|
|
if (RG.getHypLength(this.bulbTopCenterX, this.bulbTopCenterY, mouseX, mouseY) <= this.bulbTopRadius) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
};
|
|
|
|
|
|
|
|
|
|
/**
|
|
* This allows for easy specification of gradients
|
|
*/
|
|
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.colors'] = RG.array_clone(prop['chart.colors']);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
var colors = prop['chart.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
|
|
*/
|
|
this.parseSingleColorForGradient = function (color)
|
|
{
|
|
if (!color) {
|
|
return color;
|
|
}
|
|
|
|
if (typeof color === 'string' && color.match(/^gradient\((.*)\)$/i)) {
|
|
|
|
var parts = RegExp.$1.split(':');
|
|
|
|
// Create the gradient
|
|
var grad = co.createLinearGradient(prop['chart.gutter.left'], 0, ca.width - prop['chart.gutter.right'],0);
|
|
|
|
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 obj The chart object
|
|
* @param Not used - pass null
|
|
* @param function An optional callback function
|
|
*/
|
|
this.grow = function ()
|
|
{
|
|
var obj = this;
|
|
var callback = arguments[1] || function () {};
|
|
var opt = arguments[0] || {};
|
|
var frames = opt.frames ? opt.frames : 30;
|
|
var origValue = Number(obj.currentValue);
|
|
var newValue = obj.value;
|
|
newValue = ma.min(newValue, this.max);
|
|
newValue = ma.max(newValue, this.min);
|
|
var diff = newValue - origValue;
|
|
var step = (diff / frames);
|
|
var frame = 0;
|
|
|
|
|
|
function iterate ()
|
|
{
|
|
// Set the new value
|
|
obj.value = (step * frame) + origValue;
|
|
|
|
RGraph.clear(obj.canvas);
|
|
RGraph.redrawCanvas(obj.canvas);
|
|
|
|
if (frame < frames) {
|
|
frame++;
|
|
RGraph.Effects.updateCanvas(iterate);
|
|
} else {
|
|
callback(obj);
|
|
}
|
|
}
|
|
|
|
iterate();
|
|
|
|
return this;
|
|
};
|
|
|
|
|
|
|
|
RG.att(ca);
|
|
|
|
|
|
|
|
|
|
/**
|
|
* Now, because canvases can support multiple charts, canvases must always be registered
|
|
*/
|
|
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);
|
|
}
|
|
}; |