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cagettepei/www/js/rgraph/RGraph.bar.js

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/**
* o------------------------------------------------------------------------------o
* | This file is part of the RGraph package - you can learn more at: |
* | |
* | http://www.rgraph.net |
* | |
* | This package is licensed under the RGraph license. For all kinds of business |
* | purposes there is a small one-time licensing fee to pay and for non |
* | commercial purposes it is free to use. You can read the full license here: |
* | |
* | http://www.rgraph.net/LICENSE.txt |
* o------------------------------------------------------------------------------o
*/
if (typeof(RGraph) == 'undefined') RGraph = {};
/**
* The bar chart constructor
*
* @param object canvas The canvas object
* @param array data The chart data
*/
RGraph.Bar = function (id, data)
{
// Get the canvas and context objects
this.id = id;
this.canvas = document.getElementById(id);
this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null;
this.canvas.__object__ = this;
this.type = 'bar';
this.max = 0;
this.stackedOrGrouped = false;
this.isRGraph = true;
this.uid = RGraph.CreateUID();
this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
this.colorsParsed = false;
/**
* Compatibility with older browsers
*/
RGraph.OldBrowserCompat(this.context);
// Various config type stuff
this.properties = {
'chart.background.barcolor1': 'rgba(0,0,0,0)',
'chart.background.barcolor2': 'rgba(0,0,0,0)',
'chart.background.grid': true,
'chart.background.grid.color': '#ddd',
'chart.background.grid.width': 1,
'chart.background.grid.hsize': 20,
'chart.background.grid.vsize': 20,
'chart.background.grid.vlines': true,
'chart.background.grid.hlines': true,
'chart.background.grid.border': true,
'chart.background.grid.autofit':true,
'chart.background.grid.autofit.numhlines': 5,
'chart.background.grid.autofit.numvlines': 20,
'chart.background.image.stretch': true,
'chart.background.image.x': null,
'chart.background.image.y': null,
'chart.background.image.w': null,
'chart.background.image.h': null,
'chart.background.image.align': null,
'chart.ytickgap': 20,
'chart.smallyticks': 3,
'chart.largeyticks': 5,
'chart.numyticks': 10,
'chart.hmargin': 5,
'chart.hmargin.grouped': 1,
'chart.strokecolor': 'rgba(0,0,0,0)',
'chart.axis.color': 'black',
'chart.gutter.top': 25,
'chart.gutter.bottom': 25,
'chart.gutter.left': 25,
'chart.gutter.right': 25,
'chart.labels': null,
'chart.labels.colors': [], // Gradients aren't supported for these colors
'chart.labels.ingraph': null,
'chart.labels.above': false,
'chart.labels.above.decimals': 0,
'chart.labels.above.size': null,
'chart.labels.above.angle': null,
'chart.ylabels': true,
'chart.ylabels.colors': [], // Gradients aren't supported for these colors
'chart.ylabels.count': 5,
'chart.ylabels.inside': false,
'chart.xlabels.offset': 0,
'chart.xaxispos': 'bottom',
'chart.yaxispos': 'left',
'chart.text.color': 'black', // Gradients aren't supported for this color
'chart.text.size': 10,
'chart.text.angle': 0,
'chart.text.font': 'Arial',
'chart.ymin': 0,
'chart.ymax': null,
'chart.title': '',
'chart.title.font': null,
'chart.title.background': null, // Gradients aren't supported for this color
'chart.title.hpos': null,
'chart.title.vpos': null,
'chart.title.bold': true,
'chart.title.xaxis': '',
'chart.title.xaxis.bold': true,
'chart.title.xaxis.size': null,
'chart.title.xaxis.font': null,
'chart.title.yaxis': '',
'chart.title.yaxis.bold': true,
'chart.title.yaxis.size': null,
'chart.title.yaxis.font': null,
'chart.title.yaxis.color': null, // Gradients aren't supported for this color
'chart.title.xaxis.pos': null,
'chart.title.yaxis.pos': null,
'chart.colors': ['#01B4FF', '#0f0', '#00f', '#ff0', '#0ff', '#0f0'],
'chart.colors.sequential': false,
'chart.colors.reverse': false,
'chart.grouping': 'grouped',
'chart.variant': 'bar',
'chart.variant.sketch.verticals': true,
'chart.shadow': false,
'chart.shadow.color': '#999', // Gradients aren't supported for this color
'chart.shadow.offsetx': 3,
'chart.shadow.offsety': 3,
'chart.shadow.blur': 3,
'chart.tooltips': null,
'chart.tooltips.effect': 'fade',
'chart.tooltips.css.class': 'RGraph_tooltip',
'chart.tooltips.event': 'onclick',
'chart.tooltips.highlight': true,
'chart.highlight.stroke': 'rgba(0,0,0,0)',
'chart.highlight.fill': 'rgba(255,255,255,0.7)',
'chart.background.hbars': null,
'chart.key': null,
'chart.key.background': 'white',
'chart.key.position': 'graph',
'chart.key.shadow': false,
'chart.key.shadow.color': '#666',
'chart.key.shadow.blur': 3,
'chart.key.shadow.offsetx': 2,
'chart.key.shadow.offsety': 2,
'chart.key.position.gutter.boxed': true,
'chart.key.position.x': null,
'chart.key.position.y': null,
'chart.key.halign': 'right',
'chart.key.color.shape': 'square',
'chart.key.rounded': true,
'chart.key.text.size': 10,
'chart.key.linewidth': 1,
'chart.key.colors': null,
'chart.contextmenu': null,
'chart.units.pre': '',
'chart.units.post': '',
'chart.scale.decimals': 0,
'chart.scale.point': '.',
'chart.scale.thousand': ',',
'chart.crosshairs': false,
'chart.crosshairs.color': '#333',
'chart.crosshairs.hline': true,
'chart.crosshairs.vline': true,
'chart.linewidth': 1,
'chart.annotatable': false,
'chart.annotate.color': 'black',
'chart.zoom.factor': 1.5,
'chart.zoom.fade.in': true,
'chart.zoom.fade.out': true,
'chart.zoom.hdir': 'right',
'chart.zoom.vdir': 'down',
'chart.zoom.frames': 25,
'chart.zoom.delay': 16.666,
'chart.zoom.shadow': true,
'chart.zoom.background': true,
'chart.resizable': false,
'chart.resize.handle.adjust': [0,0],
'chart.resize.handle.background': null,
'chart.adjustable': false,
'chart.noaxes': false,
'chart.noxaxis': false,
'chart.noyaxis': false,
'chart.events.click': null,
'chart.events.mousemove': null,
'chart.numxticks': null
}
// Check for support
if (!this.canvas) {
alert('[BAR] No canvas support');
return;
}
/**
* Determine whether the chart will contain stacked or grouped bars
*/
for (var i=0; i<data.length; ++i) {
if (typeof(data[i]) == 'object') {
this.stackedOrGrouped = true;
}
}
/**
* Create the dollar objects so that functions can be added to them
*/
var linear_data = RGraph.array_linearize(data);
for (var i=0; i<linear_data.length; ++i) {
this['$' + i] = {};
}
// Store the data
this.data = data;
// Used to store the coords of the bars
this.coords = [];
/**
* This linearises the data. Doing so can make it easier to pull
* out the appropriate data from tooltips
*/
this.data_arr = RGraph.array_linearize(this.data);
/**
* This adds the animation effects to the object so that you can do this: obj.Grow()
*/
//RGraph.AddEffects(this);
/**
* Register the object
*/
RGraph.Register(this);
}
/**
* A setter
*
* @param name string The name of the property to set
* @param value mixed The value of the property
*/
RGraph.Bar.prototype.Set = function (name, value)
{
name = name.toLowerCase();
if (name == 'chart.labels.abovebar') {
name = 'chart.labels.above';
}
if (name == 'chart.strokestyle') {
name = 'chart.strokecolor';
}
/**
* Check for xaxispos
*/
if (name == 'chart.xaxispos' ) {
if (value != 'bottom' && value != 'center' && value != 'top') {
alert('[BAR] (' + this.id + ') chart.xaxispos should be top, center or bottom. Tried to set it to: ' + value + ' Changing it to center');
value = 'center';
}
if (value == 'top') {
for (var i=0; i<this.data.length; ++i) {
if (typeof(this.data[i]) == 'number' && this.data[i] > 0) {
alert('[BAR] The data element with index ' + i + ' should be negative');
}
}
}
}
/**
* lineWidth doesn't appear to like a zero setting
*/
if (name.toLowerCase() == 'chart.linewidth' && value == 0) {
value = 0.0001;
}
this.properties[name] = value;
}
/**
* A getter
*
* @param name string The name of the property to get
*/
RGraph.Bar.prototype.Get = function (name)
{
return this.properties[name];
}
/**
* The function you call to draw the bar chart
*/
RGraph.Bar.prototype.Draw = function ()
{
// MUST be the first thing done!
if (typeof(this.properties['chart.background.image']) == 'string') {
RGraph.DrawBackgroundImage(this);
}
/**
* Fire the onbeforedraw event
*/
RGraph.FireCustomEvent(this, 'onbeforedraw');
/**
* Parse the colors. This allows for simple gradient syntax
*/
if (!this.colorsParsed) {
this.parseColors();
// Don't want to do this again
this.colorsParsed = true;
}
/**
* This is new in May 2011 and facilitates indiviual gutter settings,
* eg chart.gutter.left
*/
this.gutterLeft = this.properties['chart.gutter.left'];
this.gutterRight = this.properties['chart.gutter.right'];
this.gutterTop = this.properties['chart.gutter.top'];
this.gutterBottom = this.properties['chart.gutter.bottom'];
/**
* Convert any null values to 0. Won't make any difference to the bar (as opposed to the line chart)
*/
for (var i=0; i<this.data.length; ++i) {
if (this.data[i] == null) {
this.data[i] = 0;
}
}
// Cache this in a class variable as it's used rather a lot
/**
* Check for tooltips and alert the user that they're not supported with pyramid charts
*/
if ( (this.properties['chart.variant'] == 'pyramid' || this.properties['chart.variant'] == 'dot')
&& typeof(this.properties['chart.tooltips']) == 'object'
&& this.properties['chart.tooltips']
&& this.properties['chart.tooltips'].length > 0) {
alert('[BAR] (' + this.id + ') Sorry, tooltips are not supported with dot or pyramid charts');
}
/**
* Stop the coords array from growing uncontrollably
*/
this.coords = [];
/**
* Work out a few things. They need to be here because they depend on things you can change before you
* call Draw() but after you instantiate the object
*/
this.max = 0;
this.grapharea = this.canvas.height - this.gutterTop - this.gutterBottom;
this.halfgrapharea = this.grapharea / 2;
this.halfTextHeight = this.properties['chart.text.size'] / 2;
/**
* This sets the label colors. Doing it here saves lots of if() conditions in the draw method
*/
if (this.properties['chart.labels']) {
if (this.properties['chart.labels.colors'].length < this.properties['chart.labels'].length) {
while (this.properties['chart.labels.colors'].length < this.properties['chart.labels'].length) {
this.properties['chart.labels.colors'].push(this.properties['chart.labels.colors'][this.properties['chart.labels.colors'].length - 1]);
}
} else {
while (this.properties['chart.labels.colors'].length < this.properties['chart.labels'].length) {
this.properties['chart.labels.colors'].push(this.properties['chart.text.color']);
}
}
}
if (this.properties['chart.ylabels.colors'].length < this.properties['chart.ylabels.count']) {
while (this.properties['chart.ylabels.colors'].length < this.properties['chart.ylabels.count']) {
this.properties['chart.ylabels.colors'].push(this.properties['chart.ylabels.colors'][this.properties['chart.ylabels.colors'].length - 1]);
}
} else {
while (this.properties['chart.ylabels.colors'].length < this.properties['chart.ylabels'].count) {
this.properties['chart.ylabels.colors'].push(this.properties['chart.text.color']);
}
}
// Progressively Draw the chart
RGraph.background.Draw(this);
//If it's a sketch chart variant, draw the axes first
if (this.properties['chart.variant'] == 'sketch') {
this.DrawAxes();
this.Drawbars();
} else {
this.Drawbars();
this.DrawAxes();
}
this.DrawLabels();
// Draw the key if necessary
if (this.properties['chart.key'] && this.properties['chart.key'].length) {
RGraph.DrawKey(this, this.properties['chart.key'], this.properties['chart.colors']);
}
/**
* Setup the context menu if required
*/
if (this.properties['chart.contextmenu']) {
RGraph.ShowContext(this);
}
/**
* Is a line is defined, draw it
*
var line = this.Get('chart.line');
if (line) {
line.__bar__ = this;
// Check the X axis positions
if (this.Get('chart.xaxispos') != line.Get('chart.xaxispos')) {
alert("[BAR] Using different X axis positions when combining the Bar and Line is not advised");
}
line.Set('chart.gutter.left', this.Get('chart.gutter.left'));
line.Set('chart.gutter.right', this.Get('chart.gutter.right'));
line.Set('chart.gutter.top', this.Get('chart.gutter.top'));
line.Set('chart.gutter.bottom', this.Get('chart.gutter.bottom'));
line.Set('chart.hmargin', (this.canvas.width - this.gutterLeft - this.gutterRight) / (line.original_data[0].length * 2));
// If a BAR custom yMax is set, use that
if (this.Get('chart.ymax') && !line.Get('chart.ymax')) {
line.Set('chart.ymax', this.Get('chart.ymax'));
} else if (line.Get('chart.ymax')) {
line.Set('chart.ymax', line.Get('chart.ymax'));
}
// The boolean is used to specify that the Line chart .Draw() method is being called by the Bar chart
line.Draw(true);
}
*/
/**
* Draw "in graph" labels
*/
if (this.properties['chart.labels.ingraph']) {
RGraph.DrawInGraphLabels(this);
}
/**
* This function enables resizing
*/
if (this.properties['chart.resizable']) {
RGraph.AllowResizing(this);
}
/**
* This installs the event listeners
*/
RGraph.InstallEventListeners(this);
/**
* Fire the RGraph ondraw event
*/
RGraph.FireCustomEvent(this, 'ondraw');
}
/**
* Draws the charts axes
*/
RGraph.Bar.prototype.DrawAxes = function ()
{
if (this.properties['chart.noaxes']) {
return;
}
var xaxispos = this.properties['chart.xaxispos'];
var yaxispos = this.properties['chart.yaxispos'];
var isSketch = this.properties['chart.variant'] == 'sketch';
this.context.beginPath();
this.context.strokeStyle = this.properties['chart.axis.color'];
this.context.lineWidth = 1;
// Draw the Y axis
if (this.properties['chart.noyaxis'] == false) {
if (yaxispos == 'right') {
this.context.moveTo(AA(this, this.canvas.width - this.gutterRight + (isSketch ? 3 : 0)), this.gutterTop - (isSketch ? 3 : 0));
this.context.lineTo(AA(this, this.canvas.width - this.gutterRight) - (isSketch ? 2 : 0), this.canvas.height - this.gutterBottom + (isSketch ? 5 : 0));
} else {
this.context.moveTo(AA(this, this.gutterLeft - (isSketch ? 2 : 0)), this.gutterTop - (isSketch ? 5 : 0));
this.context.lineTo(AA(this, this.gutterLeft - (isSketch ? 1 : 0)), this.canvas.height - this.gutterBottom + (isSketch ? 5 : 0));
}
}
// Draw the X axis
if (this.properties['chart.noxaxis'] == false) {
if (xaxispos == 'center') {
this.context.moveTo(this.gutterLeft - (isSketch ? 5 : 0), AA(this, ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop + (isSketch ? 2 : 0)));
this.context.lineTo(this.canvas.width - this.gutterRight + (isSketch ? 5 : 0), AA(this, ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - (isSketch ? 2 : 0)));
} else if (xaxispos == 'top') {
this.context.moveTo(this.gutterLeft - (isSketch ? 3 : 0), AA(this, this.gutterTop) - (isSketch ? 3 : 0));
this.context.lineTo(this.canvas.width - this.gutterRight + (isSketch ? 5 : 0), AA(this, this.gutterTop + (isSketch ? 2 : 0)));
} else {
this.context.moveTo(this.gutterLeft - (isSketch ? 5 : 0), AA(this, this.canvas.height - this.gutterBottom) - (isSketch ? 2 : 0));
this.context.lineTo(this.canvas.width - this.gutterRight + (isSketch ? 8 : 0), AA(this, this.canvas.height - this.gutterBottom + (isSketch ? 2 : 0)));
}
}
var numYTicks = this.properties['chart.numyticks'];
// Draw the Y tickmarks
if (this.properties['chart.noyaxis'] == false && !isSketch) {
var yTickGap = (this.canvas.height - this.gutterTop - this.gutterBottom) / numYTicks;
var xpos = yaxispos == 'left' ? this.gutterLeft : this.canvas.width - this.gutterRight;
if (this.properties['chart.numyticks'] > 0) {
for (y=this.gutterTop;
xaxispos == 'center' ? y <= (this.canvas.height - this.gutterBottom) : y < (this.canvas.height - this.gutterBottom + (xaxispos == 'top' ? 1 : 0));
y += yTickGap) {
if (xaxispos == 'center' && y == (this.gutterTop + (this.grapharea/ 2))) continue;
// X axis at the top
if (xaxispos == 'top' && y == this.gutterTop) continue;
this.context.moveTo(xpos, AA(this, y));
this.context.lineTo(xpos + (yaxispos == 'left' ? -3 : 3), AA(this, y));
}
}
/**
* If the X axis is not being shown, draw an extra tick
*/
if (this.properties['chart.noxaxis']) {
if (xaxispos == 'center') {
this.context.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), AA(this, this.canvas.height / 2));
this.context.lineTo(xpos, AA(this, this.canvas.height / 2));
} else if (xaxispos == 'top') {
this.context.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), AA(this, this.gutterTop));
this.context.lineTo(xpos, AA(this, this.gutterTop));
} else {
this.context.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), AA(this, this.canvas.height - this.gutterBottom));
this.context.lineTo(xpos, AA(this, this.canvas.height - this.gutterBottom));
}
}
}
// Draw the X tickmarks
if (this.properties['chart.noxaxis'] == false && !isSketch) {
xTickGap = (this.canvas.width - this.gutterLeft - this.gutterRight) / this.data.length;
if (typeof(this.properties['chart.numxticks']) == 'number') {
xTickGap = (this.canvas.width - this.gutterLeft - this.gutterRight) / this.properties['chart.numxticks'];
}
if (xaxispos == 'bottom') {
yStart = this.canvas.height - this.gutterBottom;
yEnd = (this.canvas.height - this.gutterBottom) + 3;
} else if (xaxispos == 'top') {
yStart = this.gutterTop - 3;
yEnd = this.gutterTop;
} else if (xaxispos == 'center') {
yStart = ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop + 3;
yEnd = ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - 3;
}
yStart = AA(this, yStart);
yEnd = AA(this, yEnd);
//////////////// X TICKS ////////////////
var noEndXTick = this.properties['chart.noendxtick'];
for (x=this.gutterLeft + (yaxispos == 'left' ? xTickGap : 0); x<this.canvas.width - this.gutterRight + (yaxispos == 'left' ? 5 : 0); x+=xTickGap) {
if (yaxispos == 'left' && !noEndXTick && x > this.gutterLeft) {
this.context.moveTo(AA(this, x), yStart);
this.context.lineTo(AA(this, x), yEnd);
} else if (yaxispos == 'left' && noEndXTick && x > this.gutterLeft && x < (this.canvas.width - this.gutterRight) ) {
this.context.moveTo(AA(this, x), yStart);
this.context.lineTo(AA(this, x), yEnd);
} else if (yaxispos == 'right' && x < (this.canvas.width - this.gutterRight) && !noEndXTick) {
this.context.moveTo(AA(this, x), yStart);
this.context.lineTo(AA(this, x), yEnd);
} else if (yaxispos == 'right' && x < (this.canvas.width - this.gutterRight) && x > (this.gutterLeft) && noEndXTick) {
this.context.moveTo(AA(this, x), yStart);
this.context.lineTo(AA(this, x), yEnd);
}
}
if (this.properties['chart.noyaxis'] || this.properties['chart.numxticks'] == null) {
if (typeof(this.properties['chart.numxticks']) == 'number' && this.properties['chart.numxticks'] > 0) {
this.context.moveTo(AA(this, this.gutterLeft), yStart);
this.context.lineTo(AA(this, this.gutterLeft), yEnd);
}
}
//////////////// X TICKS ////////////////
}
/**
* If the Y axis is not being shown, draw an extra tick
*/
if (this.properties['chart.noyaxis'] && this.properties['chart.noxaxis'] == false && this.properties['chart.numxticks'] == null) {
if (xaxispos == 'center') {
this.context.moveTo(AA(this, this.gutterLeft), (this.canvas.height / 2) - 3);
this.context.lineTo(AA(this, this.gutterLeft), (this.canvas.height / 2) + 3);
} else {
this.context.moveTo(AA(this, this.gutterLeft), this.canvas.height - this.gutterBottom);
this.context.lineTo(AA(this, this.gutterLeft), this.canvas.height - this.gutterBottom + 3);
}
}
this.context.stroke();
}
/**
* Draws the bars
*/
RGraph.Bar.prototype.Drawbars = function ()
{
this.context.lineWidth = this.properties['chart.linewidth'];
this.context.strokeStyle = this.properties['chart.strokecolor'];
this.context.fillStyle = this.properties['chart.colors'][0];
var prevX = 0;
var prevY = 0;
var decimals = this.properties['chart.scale.decimals'];
/**
* Work out the max value
*/
if (this.properties['chart.ymax']) {
this.max = this.properties['chart.ymax'];
this.min = this.properties['chart.ymin'];
this.scale = [
(((this.max - this.min) * (1/5)) + this.min).toFixed(decimals),
(((this.max - this.min) * (2/5)) + this.min).toFixed(decimals),
(((this.max - this.min) * (3/5)) + this.min).toFixed(decimals),
(((this.max - this.min) * (4/5)) + this.min).toFixed(decimals),
(((this.max - this.min) * (5/5) + this.min)).toFixed(decimals)
];
} else {
this.min = this.properties['chart.ymin'];
for (i=0; i<this.data.length; ++i) {
if (typeof(this.data[i]) == 'object') {
var value = this.properties['chart.grouping'] == 'grouped' ? Number(RGraph.array_max(this.data[i], true)) : Number(RGraph.array_sum(this.data[i])) ;
} else {
var value = Number(this.data[i]);
}
this.max = Math.max(Math.abs(this.max), Math.abs(value));
}
this.scale = RGraph.getScale(this.max, this);
this.max = this.scale[4];
if (this.properties['chart.ymin']) {
var decimals = this.properties['chart.scale.decimals'];
this.scale[0] = ((Number(this.scale[4] - this.min) * 0.2) + this.min).toFixed(decimals);
this.scale[1] = ((Number(this.scale[4] - this.min) * 0.4) + this.min).toFixed(decimals);
this.scale[2] = ((Number(this.scale[4] - this.min) * 0.6) + this.min).toFixed(decimals);
this.scale[3] = ((Number(this.scale[4] - this.min) * 0.8) + this.min).toFixed(decimals);
this.scale[4] = ((Number(this.scale[4] - this.min) * 1.0) + this.min).toFixed(decimals);
} else {
if (this.properties['chart.scale.decimals']) {
var decimals = this.properties['chart.scale.decimals'];
this.scale[0] = Number(this.scale[0]).toFixed(decimals);
this.scale[1] = Number(this.scale[1]).toFixed(decimals);
this.scale[2] = Number(this.scale[2]).toFixed(decimals);
this.scale[3] = Number(this.scale[3]).toFixed(decimals);
this.scale[4] = Number(this.scale[4]).toFixed(decimals);
}
}
}
/**
* if the chart is adjustable fix the scale so that it doesn't change.
*/
if (this.properties['chart.adjustable'] && !this.properties['chart.ymax']) {
this.Set('chart.ymax', this.scale[4]);
}
/**
* Draw horizontal bars here
*/
if (this.properties['chart.background.hbars'] && this.properties['chart.background.hbars'].length > 0) {
RGraph.DrawBars(this);
}
var variant = this.properties['chart.variant'];
/**
* Draw the 3D axes is necessary
*/
if (variant == '3d') {
RGraph.Draw3DAxes(this);
}
/**
* Get the variant once, and draw the bars, be they regular, stacked or grouped
*/
// Get these variables outside of the loop
var xaxispos = this.properties['chart.xaxispos'];
var width = (this.canvas.width - this.gutterLeft - this.gutterRight ) / this.data.length;
var orig_height = height;
var hmargin = this.properties['chart.hmargin'];
var shadow = this.properties['chart.shadow'];
var shadowColor = this.properties['chart.shadow.color'];
var shadowBlur = this.properties['chart.shadow.blur'];
var shadowOffsetX = this.properties['chart.shadow.offsetx'];
var shadowOffsetY = this.properties['chart.shadow.offsety'];
var strokeStyle = this.properties['chart.strokecolor'];
var colors = this.properties['chart.colors'];
var sequentialColorIndex = 0;
for (i=0; i<this.data.length; ++i) {
// Work out the height
//The width is up outside the loop
var height = ((RGraph.array_sum(this.data[i]) < 0 ? RGraph.array_sum(this.data[i]) + this.min : RGraph.array_sum(this.data[i]) - this.min) / (this.max - this.min) ) * (this.canvas.height - this.gutterTop - this.gutterBottom);
// Half the height if the Y axis is at the center
if (xaxispos == 'center') {
height /= 2;
}
var x = (i * width) + this.gutterLeft;
var y = xaxispos == 'center' ? ((this.canvas.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - height
: this.canvas.height - height - this.gutterBottom;
// xaxispos is top
if (xaxispos == 'top') {
y = this.gutterTop + Math.abs(height);
}
// Account for negative lengths - Some browsers (eg Chrome) don't like a negative value
if (height < 0) {
y += height;
height = Math.abs(height);
}
/**
* Turn on the shadow if need be
*/
if (shadow) {
this.context.shadowColor = shadowColor;
this.context.shadowBlur = shadowBlur;
this.context.shadowOffsetX = shadowOffsetX;
this.context.shadowOffsetY = shadowOffsetY;
}
/**
* Draw the bar
*/
this.context.beginPath();
if (typeof(this.data[i]) == 'number') {
var barWidth = width - (2 * hmargin);
/**
* Check for a negative bar width
*/
if (barWidth < 0) {
alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
}
// Set the fill color
this.context.strokeStyle = strokeStyle;
this.context.fillStyle = colors[0];
/**
* Sequential colors
*/
if (this.properties['chart.colors.sequential']) {
this.context.fillStyle = colors[i];
}
if (variant == 'sketch') {
this.context.lineCap = 'round';
var sketchOffset = 3;
this.context.beginPath();
this.context.strokeStyle = colors[0];
/**
* Sequential colors
*/
if (this.properties['chart.colors.sequential']) {
this.context.strokeStyle = colors[i];
}
// Left side
this.context.moveTo(x + hmargin + 2, y + height - 2);
this.context.lineTo(x + hmargin - 1, y - 4);
// The top
this.context.moveTo(x + hmargin - 3, y + -2 + (this.data[i] < 0 ? height : 0));
this.context.bezierCurveTo(
x + ((hmargin + width) * 0.33),
y + 15 + (this.data[i] < 0 ? height - 10: 0),
x + ((hmargin + width) * 0.66),
y + 5 + (this.data[i] < 0 ? height - 10 : 0),x + hmargin + width + -1, y + 0 + (this.data[i] < 0 ? height : 0)
);
// The right side
this.context.moveTo(x + hmargin + width - 5, y - 5);
this.context.lineTo(x + hmargin + width - 3, y + height - 3);
if (this.properties['chart.variant.sketch.verticals']) {
for (var r=0.2; r<=0.8; r+=0.2) {
this.context.moveTo(x + hmargin + width + (r > 0.4 ? -1 : 3) - (r * width),y - 1);
this.context.lineTo(x + hmargin + width - (r > 0.4 ? 1 : -1) - (r * width), y + height + (r == 0.2 ? 1 : -2));
}
}
this.context.stroke();
// Regular bar
} else if (variant == 'bar' || variant == '3d' || variant == 'glass' || variant == 'bevel') {
if (RGraph.isOld() && shadow) {
this.DrawIEShadow([x + hmargin, y, barWidth, height]);
}
if (variant == 'glass') {
RGraph.filledCurvyRect(this.context, x + hmargin, y, barWidth, height, 3, this.data[i] > 0, this.data[i] > 0, this.data[i] < 0, this.data[i] < 0);
RGraph.strokedCurvyRect(this.context, x + hmargin, y, barWidth, height, 3, this.data[i] > 0, this.data[i] > 0, this.data[i] < 0, this.data[i] < 0);
} else {
this.context.strokeRect(x + hmargin, y, barWidth, height);
this.context.fillRect(x + hmargin, y, barWidth, height);
}
// 3D effect
if (variant == '3d') {
var prevStrokeStyle = this.context.strokeStyle;
var prevFillStyle = this.context.fillStyle;
// Draw the top
this.context.beginPath();
this.context.moveTo(x + hmargin, y);
this.context.lineTo(x + hmargin + 10, y - 5);
this.context.lineTo(x + hmargin + 10 + barWidth, y - 5);
this.context.lineTo(x + hmargin + barWidth, y);
this.context.closePath();
this.context.stroke();
this.context.fill();
// Draw the right hand side
this.context.beginPath();
this.context.moveTo(x + hmargin + barWidth, y);
this.context.lineTo(x + hmargin + barWidth + 10, y - 5);
this.context.lineTo(x + hmargin + barWidth + 10, y + height - 5);
this.context.lineTo(x + hmargin + barWidth, y + height);
this.context.closePath();
this.context.stroke();
this.context.fill();
// Draw the darker top section
this.context.beginPath();
this.context.fillStyle = 'rgba(255,255,255,0.3)';
this.context.moveTo(x + hmargin, y);
this.context.lineTo(x + hmargin + 10, y - 5);
this.context.lineTo(x + hmargin + 10 + barWidth, y - 5);
this.context.lineTo(x + hmargin + barWidth, y);
this.context.lineTo(x + hmargin, y);
this.context.closePath();
this.context.stroke();
this.context.fill();
// Draw the darker right side section
this.context.beginPath();
this.context.fillStyle = 'rgba(0,0,0,0.4)';
this.context.moveTo(x + hmargin + barWidth, y);
this.context.lineTo(x + hmargin + barWidth + 10, y - 5);
this.context.lineTo(x + hmargin + barWidth + 10, y - 5 + height);
this.context.lineTo(x + hmargin + barWidth, y + height);
this.context.lineTo(x + hmargin + barWidth, y);
this.context.closePath();
this.context.stroke();
this.context.fill();
this.context.strokeStyle = prevStrokeStyle;
this.context.fillStyle = prevFillStyle;
// Glass variant
} else if (variant == 'glass') {
var grad = this.context.createLinearGradient(
x + hmargin,
y,
x + hmargin + (barWidth / 2),
y
);
grad.addColorStop(0, 'rgba(255,255,255,0.9)');
grad.addColorStop(1, 'rgba(255,255,255,0.5)');
this.context.beginPath();
this.context.fillStyle = grad;
this.context.fillRect(x + hmargin + 2,y + (this.data[i] > 0 ? 2 : 0),(barWidth / 2) - 2,height - 2);
this.context.fill();
}
// This bit draws the text labels that appear above the bars if requested
if (this.properties['chart.labels.above']) {
// Turn off any shadow
if (shadow) {
RGraph.NoShadow(this);
}
var yPos = y - 3;
// Account for negative bars
if (this.data[i] < 0) {
yPos += height + 6 + (this.properties['chart.text.size'] - 4);
}
// Account for chart.xaxispos=top
if (this.properties['chart.xaxispos'] == 'top') {
yPos = this.gutterTop + height + 6 + (typeof(this.properties['chart.labels.above.size']) == 'number' ? this.properties['chart.labels.above.size'] : this.properties['chart.text.size'] - 4);
}
// Account for chart.variant=3d
if (this.properties['chart.variant'] == '3d') {
yPos -= 5;
}
this.context.fillStyle = this.properties['chart.text.color'];
RGraph.Text(this.context,
this.properties['chart.text.font'],
typeof(this.properties['chart.labels.above.size']) == 'number' ? this.properties['chart.labels.above.size'] : this.properties['chart.text.size'] - 3,
x + hmargin + (barWidth / 2),
yPos,
RGraph.number_format(this, Number(this.data[i]).toFixed(this.properties['chart.labels.above.decimals']),this.properties['chart.units.pre'],this.properties['chart.units.post']),
this.properties['chart.labels.above.angle'] ? 'bottom' : null,
this.properties['chart.labels.above.angle'] ? (this.properties['chart.labels.above.angle'] > 0 && (this.properties['chart.xaxispos'] != 'top') ? 'right' : 'left') : 'center',
null,
this.properties['chart.labels.above.angle']
);
}
// Dot chart
} else if (variant == 'dot') {
this.context.beginPath();
this.context.moveTo(x + (width / 2), y);
this.context.lineTo(x + (width / 2), y + height);
this.context.stroke();
this.context.beginPath();
this.context.fillStyle = this.properties['chart.colors'][i];
this.context.arc(x + (width / 2), y + (this.data[i] > 0 ? 0 : height), 2, 0, 6.28, 0);
// Set the colour for the dots
this.context.fillStyle = this.properties['chart.colors'][0];
/**
* Sequential colors
*/
if (this.properties['chart.colors.sequential']) {
this.context.fillStyle = colors[i];
}
this.context.stroke();
this.context.fill();
// Pyramid chart
} else if (variant == 'pyramid') {
this.context.beginPath();
var startY = (this.properties['chart.xaxispos'] == 'center' ? (this.canvas.height / 2) : (this.canvas.height - this.gutterBottom));
this.context.moveTo(x + hmargin, startY);
this.context.lineTo(
x + hmargin + (barWidth / 2),
y + (this.properties['chart.xaxispos'] == 'center' && (this.data[i] < 0) ? height : 0)
);
this.context.lineTo(x + hmargin + barWidth, startY);
this.context.closePath();
this.context.stroke();
this.context.fill();
// Arrow chart
} else if (variant == 'arrow') {
var startY = (this.properties['chart.xaxispos'] == 'center' ? (this.canvas.height / 2) : (this.canvas.height - this.gutterBottom));
this.context.lineWidth = this.properties['chart.linewidth'] ? this.properties['chart.linewidth'] : 1;
this.context.lineCap = 'round';
this.context.beginPath();
this.context.moveTo(AA(this, x + hmargin + (barWidth / 2)), startY);
this.context.lineTo(AA(this, x + hmargin + (barWidth / 2)), y + (this.properties['chart.xaxispos'] == 'center' && (this.data[i] < 0) ? height : 0));
this.context.arc(x + hmargin + (barWidth / 2),
y + (this.properties['chart.xaxispos'] == 'center' && (this.data[i] < 0) ? height : 0),
5,
this.data[i] > 0 ? 0.78 : 5.6,
this.data[i] > 0 ? 0.79 : 5.48,
this.data[i] < 0);
this.context.moveTo(AA(this, x + hmargin + (barWidth / 2)), y + (this.properties['chart.xaxispos'] == 'center' && (this.data[i] < 0) ? height : 0));
this.context.arc(x + hmargin + (barWidth / 2),
y + (this.properties['chart.xaxispos'] == 'center' && (this.data[i] < 0) ? height : 0),
5,
this.data[i] > 0 ? 2.355 : 4,
this.data[i] > 0 ? 2.4 : 3.925,
this.data[i] < 0);
this.context.stroke();
this.context.lineWidth = 1;
// Unknown variant type
} else {
alert('[BAR] Warning! Unknown chart.variant: ' + variant);
}
this.coords.push([x + hmargin, y, width - (2 * hmargin), height]);
/**
* Stacked bar
*/
} else if (typeof(this.data[i]) == 'object' && this.properties['chart.grouping'] == 'stacked') {
if (this.min) {
alert("[ERROR] Stacked Bar charts with a Y min are not supported");
}
var barWidth = width - (2 * hmargin);
var redrawCoords = [];// Necessary to draw if the shadow is enabled
var startY = 0;
var dataset = this.data[i];
/**
* Check for a negative bar width
*/
if (barWidth < 0) {
alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
}
for (j=0; j<dataset.length; ++j) {
// Stacked bar chart and X axis pos in the middle - poitless since negative values are not permitted
if (xaxispos == 'center') {
alert("[BAR] It's pointless having the X axis position at the center on a stacked bar chart.");
return;
}
// Negative values not permitted for the stacked chart
if (this.data[i][j] < 0) {
alert('[BAR] Negative values are not permitted with a stacked bar chart. Try a grouped one instead.');
return;
}
/**
* Set the fill and stroke colors
*/
this.context.strokeStyle = strokeStyle
this.context.fillStyle = colors[j];
if (this.properties['chart.colors.reverse']) {
this.context.fillStyle = colors[this.data[i].length - j - 1];
}
if (this.properties['chart.colors.sequential'] && colors[sequentialColorIndex]) {
this.context.fillStyle = colors[sequentialColorIndex++];
} else if (this.properties['chart.colors.sequential']) {
this.context.fillStyle = colors[sequentialColorIndex - 1];
}
var height = (dataset[j] / this.max) * (this.canvas.height - this.gutterTop - this.gutterBottom );
// If the X axis pos is in the center, we need to half the height
if (xaxispos == 'center') {
height /= 2;
}
var totalHeight = (RGraph.array_sum(dataset) / this.max) * (this.canvas.height - hmargin - this.gutterTop - this.gutterBottom);
/**
* Store the coords for tooltips
*/
this.coords.push([x + hmargin, y, width - (2 * hmargin), height]);
// MSIE shadow
if (RGraph.isOld() && shadow) {
this.DrawIEShadow([x + hmargin, y, width - (2 * hmargin), height + 1]);
}
this.context.strokeRect(x + hmargin, y, width - (2 * hmargin), height);
this.context.fillRect(x + hmargin, y, width - (2 * hmargin), height);
if (j == 0) {
var startY = y;
var startX = x;
}
/**
* Store the redraw coords if the shadow is enabled
*/
if (shadow) {
redrawCoords.push([x + hmargin, y, width - (2 * hmargin), height, this.context.fillStyle]);
}
/**
* Stacked 3D effect
*/
if (variant == '3d') {
var prevFillStyle = this.context.fillStyle;
var prevStrokeStyle = this.context.strokeStyle;
// Draw the top side
if (j == 0) {
this.context.beginPath();
this.context.moveTo(startX + hmargin, y);
this.context.lineTo(startX + 10 + hmargin, y - 5);
this.context.lineTo(startX + 10 + barWidth + hmargin, y - 5);
this.context.lineTo(startX + barWidth + hmargin, y);
this.context.closePath();
this.context.fill();
this.context.stroke();
}
// Draw the side section
this.context.beginPath();
this.context.moveTo(startX + barWidth + hmargin, y);
this.context.lineTo(startX + barWidth + hmargin + 10, y - 5);
this.context.lineTo(startX + barWidth + hmargin + 10, y - 5 + height);
this.context.lineTo(startX + barWidth + hmargin , y + height);
this.context.closePath();
this.context.fill();
this.context.stroke();
// Draw the darker top side
if (j == 0) {
this.context.fillStyle = 'rgba(255,255,255,0.3)';
this.context.beginPath();
this.context.moveTo(startX + hmargin, y);
this.context.lineTo(startX + 10 + hmargin, y - 5);
this.context.lineTo(startX + 10 + barWidth + hmargin, y - 5);
this.context.lineTo(startX + barWidth + hmargin, y);
this.context.closePath();
this.context.fill();
this.context.stroke();
}
// Draw the darker side section
this.context.fillStyle = 'rgba(0,0,0,0.4)';
this.context.beginPath();
this.context.moveTo(startX + barWidth + hmargin, y);
this.context.lineTo(startX + barWidth + hmargin + 10, y - 5);
this.context.lineTo(startX + barWidth + hmargin + 10, y - 5 + height);
this.context.lineTo(startX + barWidth + hmargin , y + height);
this.context.closePath();
this.context.fill();
this.context.stroke();
this.context.strokeStyle = prevStrokeStyle;
this.context.fillStyle = prevFillStyle;
}
y += height;
}
// This bit draws the text labels that appear above the bars if requested
if (this.Get('chart.labels.above')) {
// Turn off any shadow
RGraph.NoShadow(this);
this.context.fillStyle = this.properties['chart.text.color'];
RGraph.Text(this.context,
this.properties['chart.text.font'],
typeof(this.properties['chart.labels.above.size']) == 'number' ? this.properties['chart.labels.above.size'] : this.properties['chart.text.size'] - 3,
startX + (barWidth / 2) + this.properties['chart.hmargin'],
startY - (this.properties['chart.shadow'] && this.properties['chart.shadow.offsety'] < 0 ? 7 : 4) - (this.properties['chart.variant'] == '3d' ? 5 : 0),
String(this.properties['chart.units.pre'] + RGraph.array_sum(this.data[i]).toFixed(this.properties['chart.labels.above.decimals']) + this.properties['chart.units.post']),
this.properties['chart.labels.above.angle'] ? 'bottom' : null,
this.properties['chart.labels.above.angle'] ? (this.properties['chart.labels.above.angle'] > 0 ? 'right' : 'left') : 'center',
null,
this.properties['chart.labels.above.angle']);
// Turn any shadow back on
if (shadow) {
this.context.shadowColor = shadowColor;
this.context.shadowBlur = shadowBlur;
this.context.shadowOffsetX = shadowOffsetX;
this.context.shadowOffsetY = shadowOffsetY;
}
}
/**
* Redraw the bars if the shadow is enabled due to hem being drawn from the bottom up, and the
* shadow spilling over to higher up bars
*/
if (shadow) {
RGraph.NoShadow(this);
for (k=0; k<redrawCoords.length; ++k) {
this.context.strokeStyle = strokeStyle;
this.context.fillStyle = redrawCoords[k][4];
this.context.strokeRect(redrawCoords[k][0], redrawCoords[k][1], redrawCoords[k][2], redrawCoords[k][3]);
this.context.fillRect(redrawCoords[k][0], redrawCoords[k][1], redrawCoords[k][2], redrawCoords[k][3]);
this.context.stroke();
this.context.fill();
}
// Reset the redraw coords to be empty
redrawCoords = [];
}
/**
* Grouped bar
*/
} else if (typeof(this.data[i]) == 'object' && this.properties['chart.grouping'] == 'grouped') {
var redrawCoords = [];
this.context.lineWidth = this.properties['chart.linewidth'];
for (j=0; j<this.data[i].length; ++j) {
// Set the fill and stroke colors
this.context.strokeStyle = strokeStyle;
this.context.fillStyle = colors[j];
/**
* Sequential colors
*/
if (this.properties['chart.colors.sequential'] && colors[sequentialColorIndex]) {
this.context.fillStyle = colors[sequentialColorIndex++];
} else if (this.properties['chart.colors.sequential']) {
this.context.fillStyle = colors[sequentialColorIndex - 1];
}
var individualBarWidth = (width - (2 * hmargin)) / this.data[i].length;
var height = ((this.data[i][j] + (this.data[i][j] < 0 ? this.min : (-1 * this.min) )) / (this.max - this.min) ) * (this.canvas.height - this.gutterTop - this.gutterBottom );
/**
* Check for a negative bar width
*/
if (individualBarWidth < 0) {
alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
}
// If the X axis pos is in the center, we need to half the height
if (xaxispos == 'center') {
height /= 2;
}
var startX = x + hmargin + (j * individualBarWidth);
/**
* Determine the start positioning for the bar
*/
if (xaxispos == 'top') {
var startY = this.gutterTop;
var height = Math.abs(height);
} else if (xaxispos == 'center') {
var startY = this.gutterTop + (this.grapharea / 2) - height;
} else {
var startY = this.canvas.height - this.gutterBottom - height;
var height = Math.abs(height);
}
/**
* Draw MSIE shadow
*/
if (RGraph.isOld() && shadow) {
this.DrawIEShadow([startX, startY, individualBarWidth, height]);
}
var groupedMargin = this.properties['chart.hmargin.grouped'];
this.context.strokeRect(startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height);
this.context.fillRect(startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height);
y += height;
/**
* Grouped 3D effect
*/
if (variant == '3d') {
var prevFillStyle = this.context.fillStyle;
var prevStrokeStyle = this.context.strokeStyle;
// Draw the top side
this.context.beginPath();
this.context.moveTo(startX, startY);
this.context.lineTo(startX + 10, startY - 5);
this.context.lineTo(startX + 10 + individualBarWidth, startY - 5);
this.context.lineTo(startX + individualBarWidth, startY);
this.context.closePath();
this.context.fill();
this.context.stroke();
// Draw the side section
this.context.beginPath();
this.context.moveTo(startX + individualBarWidth, startY);
this.context.lineTo(startX + individualBarWidth + 10, startY - 5);
this.context.lineTo(startX + individualBarWidth + 10, startY - 5 + height);
this.context.lineTo(startX + individualBarWidth , startY + height);
this.context.closePath();
this.context.fill();
this.context.stroke();
// Draw the darker top side
this.context.fillStyle = 'rgba(255,255,255,0.3)';
this.context.beginPath();
this.context.moveTo(startX, startY);
this.context.lineTo(startX + 10, startY - 5);
this.context.lineTo(startX + 10 + individualBarWidth, startY - 5);
this.context.lineTo(startX + individualBarWidth, startY);
this.context.closePath();
this.context.fill();
this.context.stroke();
// Draw the darker side section
this.context.fillStyle = 'rgba(0,0,0,0.4)';
this.context.beginPath();
this.context.moveTo(startX + individualBarWidth, startY);
this.context.lineTo(startX + individualBarWidth + 10, startY - 5);
this.context.lineTo(startX + individualBarWidth + 10, startY - 5 + height);
this.context.lineTo(startX + individualBarWidth , startY + height);
this.context.closePath();
this.context.fill();
this.context.stroke();
this.context.strokeStyle = prevStrokeStyle;
this.context.fillStyle = prevFillStyle;
}
if (height < 0) {
height = Math.abs(height);
startY = startY - height;
}
this.coords.push([startX, startY, individualBarWidth, height]);
// Facilitate shadows going to the left
if (this.properties['chart.shadow']) {
redrawCoords.push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height, this.context.fillStyle]);
}
// This bit draws the text labels that appear above the bars if requested
if (this.Get('chart.labels.above')) {
this.context.strokeStyle = 'rgba(0,0,0,0)';
// Turn off any shadow
if (shadow) {
RGraph.NoShadow(this);
}
var yPos = y - 3;
// Account for negative bars
if (this.data[i][j] < 0) {
yPos += height + 6 + (this.properties['chart.text.size'] - 4);
}
this.context.fillStyle = this.properties['chart.text.color'];
RGraph.Text(this.context,
this.properties['chart.text.font'],
typeof(this.properties['chart.labels.above.size']) == 'number' ? this.properties['chart.labels.above.size'] : this.properties['chart.text.size'] - 3,startX + (individualBarWidth / 2),
startY - 2 - (this.properties['chart.variant'] == '3d' ? 5 : 0),
RGraph.number_format(this, this.data[i][j].toFixed(this.properties['chart.labels.above.decimals'])),
null,
this.properties['chart.labels.above.angle'] ? (this.properties['chart.labels.above.angle'] > 0 ? 'right' : 'left') : 'center',
null,
this.properties['chart.labels.above.angle']);
// Turn any shadow back on
if (shadow) {
this.context.shadowColor = shadowColor;
this.context.shadowBlur = shadowBlur;
this.context.shadowOffsetX = shadowOffsetX;
this.context.shadowOffsetY = shadowOffsetY;
}
}
}
/**
* Redraw the bar if shadows are going to the left
*/
if (redrawCoords.length) {
RGraph.NoShadow(this);
this.context.lineWidth = this.properties['chart.linewidth'];
this.context.beginPath();
for (var j=0; j<redrawCoords.length; ++j) {
this.context.fillStyle = redrawCoords[j][4];
this.context.strokeStyle = this.properties['chart.strokecolor'];
this.context.fillRect(redrawCoords[j][0], redrawCoords[j][1], redrawCoords[j][2], redrawCoords[j][3]);
this.context.strokeRect(redrawCoords[j][0], redrawCoords[j][1], redrawCoords[j][2], redrawCoords[j][3]);
}
this.context.fill();
this.context.stroke();
redrawCoords = [];
}
}
this.context.closePath();
}
/**
* Turn off any shadow
*/
RGraph.NoShadow(this);
}
/**
* Draws the labels for the graph
*/
RGraph.Bar.prototype.DrawLabels = function ()
{
var context = this.context;
var text_angle = this.properties['chart.text.angle'];
var text_size = this.properties['chart.text.size'];
var labels = this.properties['chart.labels'];
// Draw the Y axis labels:
if (this.properties['chart.ylabels']) {
this.Drawlabels_top();
this.Drawlabels_center();
this.Drawlabels_bottom();
}
/**
* The X axis labels
*/
if (typeof(labels) == 'object' && labels) {
var yOffset = 5 + Number(this.properties['chart.xlabels.offset']);
if (this.properties['chart.xaxispos'] == 'top') {
yOffset += 18;
}
/**
* Text angle
*/
var angle = 0;
var halign = 'center';
if (text_angle > 0) {
angle = -1 * text_angle;
halign = 'right';
yOffset -= 5;
if (this.properties['chart.xaxispos'] == 'top') {
halign = 'left';
yOffset += 5;
}
}
// Draw the X axis labels
context.fillStyle = this.properties['chart.text.color'];
// How wide is each bar
var barWidth = (this.canvas.width - this.gutterRight - this.gutterLeft) / labels.length;
// Reset the xTickGap
xTickGap = (this.canvas.width - this.gutterRight - this.gutterLeft) / labels.length
// Draw the X tickmarks
var i=0;
var font = this.properties['chart.text.font'];
for (x=this.gutterLeft + (xTickGap / 2); x<=this.canvas.width - this.gutterRight; x+=xTickGap) {
this.context.fillStyle = this.properties['chart.labels.colors'][i];
RGraph.Text(context, font,
text_size,
x + (this.properties['chart.text.angle'] == 90 ? 0 : 0),
this.properties['chart.xaxispos'] == 'top' ? this.gutterTop - yOffset + text_size - 1 : (this.canvas.height - this.gutterBottom) + yOffset,
String(labels[i++]),
(this.properties['chart.text.angle'] == 90 ? 'center' : 'top'),
halign,
null,
angle);
}
}
/**
* If chart.labels.above.specific is specified, draw them
*/
if (this.properties['chart.labels.above.specific']) {
var labels = this.properties['chart.labels.above.specific'];
for (var i=0; i<this.coords.length; ++i) {
var coords = this.coords[i];
var angle = this.properties['chart.labels.above.angle'];
var value = this.data[i];
var valign = value >= 0 ? 'bottom' : 'top';
var halign = 'center';
// Horizontal alignment
if (typeof(this.properties['chart.labels.above.angle']) == 'number') {
if (this.properties['chart.labels.above.angle'] >= 0) {
if (this.data[i] >= 0) {
halign = 'right';
} else {
halign = 'left';
}
} else {
if (this.data[i] >= 0) {
halign = 'left';
} else {
halign = 'right';
}
}
}
RGraph.Text(context,
this.properties['chart.text.font'],
this.properties['chart.labels.above.size'] ? this.properties['chart.labels.above.size'] : this.properties['chart.text.size'],
coords[0] + (coords[2] / 2),
value >= 0 ? coords[1] - 5 : coords[1] + coords[3] + 3,
String(labels[i]),
valign,
halign,
null,
angle);
}
}
}
/**
* Draws the X axis at the top
*/
RGraph.Bar.prototype.Drawlabels_top = function ()
{
this.context.beginPath();
this.context.fillStyle = this.properties['chart.text.color'];
this.context.strokeStyle = 'black';
if (this.properties['chart.xaxispos'] == 'top') {
var context = this.context;
var interval = (this.grapharea * (1/5) );
var text_size = this.properties['chart.text.size'];
var units_pre = this.properties['chart.units.pre'];
var units_post = this.properties['chart.units.post'];
var align = this.properties['chart.yaxispos'] == 'left' ? 'right' : 'left';
var font = this.properties['chart.text.font'];
var numYLabels = this.properties['chart.ylabels.count'];
if (this.properties['chart.ylabels.inside'] == true) {
var xpos = this.properties['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : this.canvas.width - this.gutterRight - 5;
var align = this.properties['chart.yaxispos'] == 'left' ? 'left' : 'right';
var boxed = true;
} else {
var xpos = this.properties['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : this.canvas.width - this.gutterRight + 5;
var boxed = false;
}
/**
* Draw specific Y labels here so that the local variables can be reused
*/
if (typeof(this.properties['chart.ylabels.specific']) == 'object' && this.properties['chart.ylabels.specific']) {
var labels = RGraph.array_reverse(this.properties['chart.ylabels.specific']);
var grapharea = this.canvas.height - this.gutterTop - this.gutterBottom;
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + (grapharea * (i / labels.length)) + (grapharea / labels.length);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i];}
RGraph.Text(context, font, text_size, xpos, y, labels[i], 'center', align, boxed);
}
return;
}
// One label
if (numYLabels == 1) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][4]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][4];}
RGraph.Text(context, font, text_size, xpos,this.canvas.height - this.gutterBottom,'-' + RGraph.number_format(this,Number(this.scale[4]).toFixed((this.properties['chart.scale.decimals'])),units_pre, units_post), 'center', align, boxed);
}
// 3 or 5 labels
if (numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][0]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][0];}
RGraph.Text(context, font, text_size, xpos, this.gutterTop + this.halfTextHeight + interval, '-' + RGraph.number_format(this, this.scale[0], units_pre, units_post), null, align, boxed);
// 5 labels
if (numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][1]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][1];}
RGraph.Text(context, font, text_size, xpos, (1*interval) + this.gutterTop + this.halfTextHeight + interval, '-' + RGraph.number_format(this, this.scale[1], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][3]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][3];}
RGraph.Text(context, font, text_size, xpos, (3*interval) + this.gutterTop + this.halfTextHeight + interval, '-' + RGraph.number_format(this, this.scale[3], units_pre, units_post), null, align, boxed);
}
// 3 labels
if (numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][2]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][2];}
RGraph.Text(context, font, text_size, xpos, (2*interval) + this.gutterTop + this.halfTextHeight + interval, '-' + RGraph.number_format(this, this.scale[2], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][4]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][4];}
RGraph.Text(context, font, text_size, xpos, (4*interval) + this.gutterTop + this.halfTextHeight + interval, '-' + RGraph.number_format(this, this.scale[4], units_pre, units_post), null, align, boxed);
}
}
// 10 Y labels
if (numYLabels == 10) {
interval = (this.grapharea / numYLabels );
for (var i=0; i<10; ++i) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i];}
RGraph.Text(context, font, text_size, xpos,this.gutterTop + ((this.grapharea / 10) * (i + 1)),'-' + RGraph.number_format(this,((this.scale[4] / 10) * (i + 1)).toFixed((this.properties['chart.scale.decimals'])), units_pre, units_post), 'center', align, boxed);
}
}
/**
* Show the minimum value if its not zero
*/
if (this.properties['chart.ymin'] != 0) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][0]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][0];}
RGraph.Text(context,
font,
text_size,
xpos,
this.gutterTop,
'-' + RGraph.number_format(this,(this.min.toFixed((this.properties['chart.scale.decimals']))), units_pre, units_post),
'center',
align,
boxed);
}
}
this.context.fill();
this.context.stroke();
}
/**
* Draws the X axis in the middle
*/
RGraph.Bar.prototype.Drawlabels_center = function ()
{
var font = this.properties['chart.text.font'];
var numYLabels = this.properties['chart.ylabels.count'];
this.context.fillStyle = this.properties['chart.text.color'];
if (this.properties['chart.xaxispos'] == 'center') {
/**
* Draw the top labels
*/
var interval = (this.grapharea * (1/10) );
var text_size = this.properties['chart.text.size'];
var units_pre = this.properties['chart.units.pre'];
var units_post = this.properties['chart.units.post'];
var context = this.context;
var align = '';
var xpos = 0;
var boxed = false;
this.context.fillStyle = this.properties['chart.text.color'];
this.context.strokeStyle = 'black';
if (this.properties['chart.ylabels.inside'] == true) {
var xpos = this.properties['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : this.canvas.width - this.gutterRight - 5;
var align = this.properties['chart.yaxispos'] == 'left' ? 'left' : 'right';
var boxed = true;
} else {
var xpos = this.properties['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : this.canvas.width - this.gutterRight + 5;
var align = this.properties['chart.yaxispos'] == 'left' ? 'right' : 'left';
var boxed = false;
}
/**
* Draw specific Y labels here so that the local variables can be reused
*/
if (typeof(this.properties['chart.ylabels.specific']) == 'object' && this.properties['chart.ylabels.specific']) {
var labels = this.properties['chart.ylabels.specific'];
var grapharea = this.canvas.height - this.gutterTop - this.gutterBottom;
// Draw the top halves labels
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + ((grapharea / 2) / labels.length) * i;
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i];}
RGraph.Text(context, font, text_size, xpos, y, String(labels[i]), 'center', align, boxed);
}
// Draw the bottom halves labels
for (var i=labels.length-1; i>=0; --i) {
var y = this.gutterTop + (grapharea * ( (i+1) / (labels.length * 2) )) + (grapharea / 2);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i + labels.length]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i + labels.length];}
RGraph.Text(context, font, text_size, xpos, y, labels[labels.length - i - 1], 'center', align, boxed);
}
return;
}
if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][0]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][0];}
RGraph.Text(context, font, text_size, xpos, this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[4], units_pre, units_post), null, align, boxed);
if (numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][1]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][1];}
RGraph.Text(context, font, text_size, xpos, (1*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[3], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][3]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][3];}
RGraph.Text(context, font, text_size, xpos, (3*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[1], units_pre, units_post), null, align, boxed);
}
if (numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][4]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][4];}
RGraph.Text(context, font, text_size, xpos, (4*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[0], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][2]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][2];}
RGraph.Text(context, font, text_size, xpos, (2*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[2], units_pre, units_post), null, align, boxed);
}
} else if (numYLabels == 10) {
// 10 Y labels
interval = (this.grapharea / 10) / 2;
for (var i=0; i<10; ++i) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i];}
RGraph.Text(context, font, text_size, xpos,this.gutterTop + ((this.grapharea / (10 * 2)) * i),RGraph.number_format(this, ((this.scale[4] / 10) * (10 - i)).toFixed((this.properties['chart.scale.decimals'])), units_pre, units_post), 'center', align, boxed);
}
}
///////////////////////////////////////////////////////////////////////////////////
/**
* Draw the bottom halves labels
*/
var interval = (this.grapharea) / 10;
if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) {
if (numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][5]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][5];}
RGraph.Text(context, font, text_size, xpos, (this.grapharea + this.gutterTop + this.halfTextHeight) - (4 * interval), '-' + RGraph.number_format(this, this.scale[0], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][7]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][7];}
RGraph.Text(context, font, text_size, xpos, (this.grapharea + this.gutterTop + this.halfTextHeight) - (2 * interval), '-' + RGraph.number_format(this, this.scale[2], units_pre, units_post), null, align, boxed);
}
if (numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][6]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][6];}
RGraph.Text(context, font, text_size, xpos, (this.grapharea + this.gutterTop + this.halfTextHeight) - (3 * interval), '-' + RGraph.number_format(this, this.scale[1], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][8]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][8];}
RGraph.Text(context, font, text_size, xpos, (this.grapharea + this.gutterTop + this.halfTextHeight) - interval, '-' + RGraph.number_format(this, this.scale[3], units_pre, units_post), null, align, boxed);
}
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][9]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][9];}
RGraph.Text(context, font, text_size, xpos, this.grapharea + this.gutterTop + this.halfTextHeight, '-' + RGraph.number_format(this, this.scale[4], units_pre, units_post), null, align, boxed);
} else if (numYLabels == 10) {
// Arbitrary number of Y labels
interval = (this.grapharea / numYLabels) / 2;
for (var i=0; i<numYLabels; ++i) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i + 10]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i + 10];}
RGraph.Text(context, font, text_size, xpos,this.gutterTop + (this.grapharea / 2) + ((this.grapharea / (numYLabels * 2)) * i) + (this.grapharea / (numYLabels * 2)),RGraph.number_format(this, ((this.scale[4] / numYLabels) * (i+1)).toFixed((this.properties['chart.scale.decimals'])), '-' + units_pre, units_post),'center', align, boxed);
}
}
/**
* Show the minimum value if its not zero
*/
if (this.properties['chart.ymin'] != 0) {
RGraph.Text(context,
font,
text_size,
xpos,
this.gutterTop + (this.grapharea / 2),
RGraph.number_format(this,(this.min.toFixed((this.properties['chart.scale.decimals']))), units_pre, units_post),
'center',
align,
boxed);
}
}
}
/**
* Draws the X axdis at the bottom (the default)
*/
RGraph.Bar.prototype.Drawlabels_bottom = function ()
{
this.context.beginPath();
this.context.fillStyle = this.properties['chart.text.color'];
this.context.strokeStyle = 'black';
if (this.properties['chart.xaxispos'] != 'center' && this.properties['chart.xaxispos'] != 'top') {
var interval = (this.grapharea * (1/5) );
var text_size = this.properties['chart.text.size'];
var units_pre = this.properties['chart.units.pre'];
var units_post = this.properties['chart.units.post'];
var context = this.context;
var align = this.properties['chart.yaxispos'] == 'left' ? 'right' : 'left';
var font = this.properties['chart.text.font'];
var numYLabels = this.properties['chart.ylabels.count'];
if (this.properties['chart.ylabels.inside'] == true) {
var xpos = this.properties['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : this.canvas.width - this.gutterRight - 5;
var align = this.properties['chart.yaxispos'] == 'left' ? 'left' : 'right';
var boxed = true;
} else {
var xpos = this.properties['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : this.canvas.width - this.gutterRight + 5;
var boxed = false;
}
/**
* Draw specific Y labels here so that the local variables can be reused
*/
if (this.properties['chart.ylabels.specific'] && typeof(this.properties['chart.ylabels.specific']) == 'object') {
var labels = this.properties['chart.ylabels.specific'];
var grapharea = this.canvas.height - this.gutterTop - this.gutterBottom;
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + (grapharea * (i / labels.length));
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i];}
RGraph.Text(context, font, text_size, xpos, y, labels[i], 'center', align, boxed);
}
return;
}
// 1/3/5 label
if (numYLabels == 1 || numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][0]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][0];}
RGraph.Text(context, font, text_size, xpos, this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[4], units_pre, units_post), null, align, boxed);
// 5 labels
if (numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][1]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][1];}
RGraph.Text(context, font, text_size, xpos, (1*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[3], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][3]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][3];}
RGraph.Text(context, font, text_size, xpos, (3*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[1], units_pre, units_post), null, align, boxed);
}
// 3 labels
if (numYLabels == 3 || numYLabels == 5) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][2]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][2];}
RGraph.Text(context, font, text_size, xpos, (2*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[2], units_pre, units_post), null, align, boxed);
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][4]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][4];}
RGraph.Text(context, font, text_size, xpos, (4*interval) + this.gutterTop + this.halfTextHeight, RGraph.number_format(this, this.scale[0], units_pre, units_post), null, align, boxed);
}
}
// 10 Y labels
if (numYLabels == 10) {
interval = (this.grapharea / numYLabels );
for (var i=0; i<10; ++i) {
// Color
if (typeof(this.properties['chart.ylabels.colors']) == 'object' && this.properties['chart.ylabels.colors'] && this.properties['chart.ylabels.colors'][i]) {this.context.fillStyle = this.properties['chart.ylabels.colors'][i];}
RGraph.Text(context, font, text_size, xpos, this.gutterTop + ((this.grapharea / numYLabels) * i), RGraph.number_format(this,((this.scale[4] / numYLabels) * (numYLabels - i)).toFixed((this.properties['chart.scale.decimals'])), units_pre, units_post), 'center', align, boxed);
}
}
/**
* Show the minimum value if its not zero
*/
if (this.properties['chart.ymin'] != 0) {
RGraph.Text(context,
font,
text_size,
xpos,
this.canvas.height - this.gutterBottom,
RGraph.number_format(this,(this.min.toFixed((this.properties['chart.scale.decimals']))), units_pre, units_post),
'center',
align,
boxed);
}
}
this.context.fill();
this.context.stroke();
}
/**
* This function is used by MSIE only to manually draw the shadow
*
* @param array coords The coords for the bar
*/
RGraph.Bar.prototype.DrawIEShadow = function (coords)
{
var prevFillStyle = this.context.fillStyle;
var offsetx = this.properties['chart.shadow.offsetx'];
var offsety = this.properties['chart.shadow.offsety'];
this.context.lineWidth = this.properties['chart.linewidth'];
this.context.fillStyle = this.properties['chart.shadow.color'];
this.context.beginPath();
// Draw shadow here
this.context.fillRect(coords[0] + offsetx, coords[1] + offsety, coords[2], coords[3]);
this.context.fill();
// Change the fillstyle back to what it was
this.context.fillStyle = prevFillStyle;
}
/**
* Not used by the class during creating the graph, but is used by event handlers
* to get the coordinates (if any) of the selected bar
*
* @param object e The event object
* @param object OPTIONAL You can pass in the bar object instead of the
* function using "this"
*/
RGraph.Bar.prototype.getShape =
RGraph.Bar.prototype.getBar = function (e)
{
// This facilitates you being able to pass in the bar object as a parameter instead of
// the function getting it from itself
var obj = arguments[1] ? arguments[1] : this;
var mouseXY = RGraph.getMouseXY(e);
var mouseX = mouseXY[0];
var mouseY = mouseXY[1];
for (var i=0; i<this.coords.length; i++) {
var left = obj.coords[i][0];
var top = obj.coords[i][1];
var width = obj.coords[i][2];
var height = obj.coords[i][3];
if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height)) {
if (this.properties['chart.tooltips']) {
var tooltip = RGraph.parseTooltipText ? RGraph.parseTooltipText(this.properties['chart.tooltips'], i) : this.properties['chart.tooltips'][i];
}
// Work out the dataset
var dataset = 0;
var idx = i;
while (idx >= (typeof(this.data[dataset]) == 'object' ? this.data[dataset].length : 1)) {
if (typeof(this.data[dataset]) == 'number') {
idx -= 1;
} else {
idx -= this.data[dataset].length;
}
dataset++;
}
if (typeof(this.data[dataset]) == 'number') {
idx = null;
}
return {
0: obj, 1: left, 2: top, 3: width, 4: height, 5: i,
'object': obj, 'x': left, 'y': top, 'width': width, 'height': height, 'index': i, 'tooltip': tooltip, 'index_adjusted': idx, 'dataset': dataset
};
}
}
return null;
}
/**
* This retrives the bar based on the X coordinate only.
*
* @param object e The event object
* @param object OPTIONAL You can pass in the bar object instead of the
* function using "this"
*/
RGraph.Bar.prototype.getShapeByX = function (e)
{
var canvas = e.target;
var mouseCoords = RGraph.getMouseXY(e);
// This facilitates you being able to pass in the bar object as a parameter instead of
// the function getting it from itself
var obj = arguments[1] ? arguments[1] : this;
/**
* Loop through the bars determining if the mouse is over a bar
*/
for (var i=0; i<obj.coords.length; i++) {
var mouseX = mouseCoords[0];
var mouseY = mouseCoords[1];
var left = obj.coords[i][0];
var top = obj.coords[i][1];
var width = obj.coords[i][2];
var height = obj.coords[i][3];
if (mouseX >= left && mouseX <= (left + width)) {
if (this.properties['chart.tooltips']) {
var tooltip = RGraph.parseTooltipText ? RGraph.parseTooltipText(this.properties['chart.tooltips'], i) : this.properties['chart.tooltips'][i];
}
return {
0: obj, 1: left, 2: top, 3: width, 4: height, 5: i,
'object': obj, 'x': left, 'y': top, 'width': width, 'height': height, 'index': i, 'tooltip': tooltip
};
}
}
return null;
}
/**
* When you click on the chart, this method can return the Y value at that point. It works for any point on the
* chart (that is inside the gutters) - not just points within the Bars.
*
* EITHER:
*
* @param object arg The event object
*
* OR:
*
* @param object arg A two element array containing the X and Y coordinates
*/
RGraph.Bar.prototype.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];
}
if ( mouseY < this.properties['chart.gutter.top']
|| mouseY > (this.canvas.height - this.properties['chart.gutter.bottom'])
|| mouseX < this.properties['chart.gutter.left']
|| mouseX > (this.canvas.width - this.properties['chart.gutter.right'])
) {
return null;
}
if (this.properties['chart.xaxispos'] == 'center') {
var value = (((this.grapharea / 2) - (mouseY - this.properties['chart.gutter.top'])) / this.grapharea) * (this.max - this.min)
value *= 2;
if (value >= 0) {
value += this.min;
} else {
value -= this.min;
}
} else if (this.properties['chart.xaxispos'] == 'top') {
var value = ((this.grapharea - (mouseY - this.properties['chart.gutter.top'])) / this.grapharea) * (this.max - this.min)
value = this.max - value;
value = Math.abs(value) * -1;
} else {
var value = ((this.grapharea - (mouseY - this.properties['chart.gutter.top'])) / this.grapharea) * (this.max - this.min)
value += this.min;
}
return value;
}
/**
* This function can be used when the canvas is clicked on (or similar - depending on the event)
* to retrieve the relevant Y coordinate for a particular value.
*
* @param int value The value to get the Y coordinate for
*/
RGraph.Bar.prototype.getYCoord = function (value)
{
if (value > this.max) {
return null;
}
var y;
var xaxispos = this.properties['chart.xaxispos'];
if (xaxispos == 'top') {
// Account for negative numbers
if (value < 0) {
value = Math.abs(value);
}
y = ((value - this.min) / (this.max - this.min)) * this.grapharea;
y = y + this.gutterTop
} else if (xaxispos == 'center') {
y = ((value - this.min) / (this.max - this.min)) * (this.grapharea / 2);
y = (this.grapharea / 2) - y;
y += this.gutterTop;
} else {
if (value < this.min) {
value = this.min;
}
y = ((value - this.min) / (this.max - this.min)) * this.grapharea;
y = this.canvas.height - this.gutterBottom - y;
}
return y;
}
/**
* Each object type has its own Highlight() function which highlights the appropriate shape
*
* @param object shape The shape to highlight
*/
RGraph.Bar.prototype.Highlight = function (shape)
{
// Add the new highlight
RGraph.Highlight.Rect(this, shape);
}
/**
* The getObjectByXY() worker method
*/
RGraph.Bar.prototype.getObjectByXY = function (e)
{
var mouseXY = RGraph.getMouseXY(e);
if (
mouseXY[0] >= this.properties['chart.gutter.left']
&& mouseXY[0] <= (this.canvas.width - this.properties['chart.gutter.right'])
&& mouseXY[1] >= this.properties['chart.gutter.top']
&& mouseXY[1] <= (this.canvas.height - this.properties['chart.gutter.bottom'])
) {
return this;
}
}
/**
* This method handles the adjusting calculation for when the mouse is moved
*
* @param object e The event object
*/
RGraph.Bar.prototype.Adjusting_mousemove = function (e)
{
/**
* Handle adjusting for the Bar
*/
if (RGraph.Registry.Get('chart.adjusting') && RGraph.Registry.Get('chart.adjusting').uid == this.uid) {
// Rounding the value to the given number of decimals make the chart step
var value = Number(this.getValue(e));//.toFixed(this.Get('chart.scale.decimals'));
var shape = this.getShapeByX(e);
if (shape) {
RGraph.Registry.Set('chart.adjusting.shape', shape);
this.data[shape['index']] = Number(value);
RGraph.RedrawCanvas(e.target);
RGraph.FireCustomEvent(this, 'onadjust');
}
}
}
/*********************************************************************************************************
* This is the combined bar and Line class which makes creating bar/line combo charts a little bit easier *
/*********************************************************************************************************/
RGraph.CombinedChart = function ()
{
/**
* Create a default empty array for the objects
*/
this.objects = [];
for (var i=0; i<arguments.length; ++i) {
this.objects[i] = arguments[i];
/**
* Set the Line chart gutters to match the Bar chart gutters
*/
this.objects[i].Set('chart.gutter.left', this.objects[0].Get('chart.gutter.left'));
this.objects[i].Set('chart.gutter.right', this.objects[0].Get('chart.gutter.right'));
this.objects[i].Set('chart.gutter.top', this.objects[0].Get('chart.gutter.top'));
this.objects[i].Set('chart.gutter.bottom', this.objects[0].Get('chart.gutter.bottom'));
if (this.objects[i].type == 'line') {
/**
* Set the line chart hmargin
*/
this.objects[i].Set('chart.hmargin', ((this.objects[0].canvas.width - this.objects[0].Get('chart.gutter.right') - this.objects[0].Get('chart.gutter.left')) / this.objects[0].data.length) / 2 );
/**
* No labels, axes or grid on the Line chart
*/
this.objects[i].Set('chart.noaxes', true);
this.objects[i].Set('chart.background.grid', false);
this.objects[i].Set('chart.ylabels', false);
}
/**
* Resizing
*/
if (this.objects[i].Get('chart.resizable')) {
var resizable = true;
}
}
/**
* Resizing
*/
if (resizable) {
/**
* This recalculates the Line chart hmargin when the chart is resized
*/
function myOnresizebeforedraw (obj)
{
var gutterLeft = obj.Get('chart.gutter.left');
var gutterRight = obj.Get('chart.gutter.right');
obj.Set('chart.hmargin', (obj.canvas.width - gutterLeft - gutterRight) / (obj.original_data[0].length * 2));
}
RGraph.AddCustomEventListener(RGraph.ObjectRegistry.getFirstObjectByType(this.objects[0].canvas.id, 'line'), 'onresizebeforedraw', myOnresizebeforedraw);
}
}
RGraph.CombinedChart.prototype.Draw = function ()
{
for (var i=0; i<this.objects.length; ++i) {
if (typeof(arguments[i]) == 'function') {
arguments[i](this.objects[i]);
} else {
this.objects[i].Draw();
}
}
}
/**
* 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
*/
RGraph.Bar.prototype.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(obj.canvas);
var gutterLeft = obj.Get('chart.gutter.left');
var gutterTop = obj.Get('chart.gutter.top');
var width = tooltip.offsetWidth;
var height = tooltip.offsetHeight;
var value = obj.data_arr[tooltip.__index__];
// Set the top position
tooltip.style.left = 0;
tooltip.style.top = canvasXY[1] + coordY - height - 7 + 'px';
/**
* If the tooltip is for a negative value - position it underneath the bar
*/
if (value < 0) {
tooltip.style.top = canvasXY[1] + coordY + coordH + 7 + 'px';
}
// By default any overflow is hidden
tooltip.style.overflow = '';
// Inverted arrow
// data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAFCAMAAACkeOZkAAAAK3RFWHRDcmVhdGlvbiBUaW1lAFNhdCA2IE9jdCAyMDEyIDEyOjQ5OjMyIC0wMDAw2S1RlgAAAAd0SU1FB9wKBgszM4Ed2k4AAAAJcEhZcwAACxIAAAsSAdLdfvwAAAAEZ0FNQQAAsY8L/GEFAAAACVBMVEX/AAC9vb3//+92Pom0AAAAAXRSTlMAQObYZgAAAB1JREFUeNpjYAABRgY4YGRiRDCZYBwQE8qBMEEcAANCACqByy1sAAAAAElFTkSuQmCC
// The arrow
var img = new Image();
img.style.position = 'absolute';
img.id = '__rgraph_tooltip_pointer__';
if (value >= 0) {
img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAFCAYAAACjKgd3AAAARUlEQVQYV2NkQAN79+797+RkhC4M5+/bd47B2dmZEVkBCgcmgcsgbAaA9GA1BCSBbhAuA/AagmwQPgMIGgIzCD0M0AMMAEFVIAa6UQgcAAAAAElFTkSuQmCC';
img.style.top = (tooltip.offsetHeight - 2) + 'px';
} else {
img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAAFCAMAAACkeOZkAAAAK3RFWHRDcmVhdGlvbiBUaW1lAFNhdCA2IE9jdCAyMDEyIDEyOjQ5OjMyIC0wMDAw2S1RlgAAAAd0SU1FB9wKBgszM4Ed2k4AAAAJcEhZcwAACxIAAAsSAdLdfvwAAAAEZ0FNQQAAsY8L/GEFAAAACVBMVEX/AAC9vb3//+92Pom0AAAAAXRSTlMAQObYZgAAAB1JREFUeNpjYAABRgY4YGRiRDCZYBwQE8qBMEEcAANCACqByy1sAAAAAElFTkSuQmCC';
img.style.top = '-5px';
}
tooltip.appendChild(img);
// Reposition the tooltip if at the edges:
// LEFT edge
if ((canvasXY[0] + coordX + (coordW / 2) - (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)) > document.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';
}
}
/**
* This allows for easy specification of gradients
*/
RGraph.Bar.prototype.parseColors = function ()
{
// Set this as a local variable
var props = this.properties;
// chart.colors
var colors = props['chart.colors'];
if (colors) {
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForGradient(colors[i]);
}
}
// chart.key.colors
var colors = props['chart.key.colors'];
if (colors) {
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForGradient(colors[i]);
}
}
props['chart.crosshairs.color'] = this.parseSingleColorForGradient(props['chart.crosshairs.color']);
props['chart.highlight.stroke'] = this.parseSingleColorForGradient(props['chart.highlight.stroke']);
props['chart.highlight.fill'] = this.parseSingleColorForGradient(props['chart.highlight.fill']);
props['chart.text.color'] = this.parseSingleColorForGradient(props['chart.text.color']);
props['chart.background.barcolor1'] = this.parseSingleColorForGradient(props['chart.background.barcolor1']);
props['chart.background.barcolor2'] = this.parseSingleColorForGradient(props['chart.background.barcolor2']);
props['chart.background.grid.color'] = this.parseSingleColorForGradient(props['chart.background.grid.color']);
props['chart.strokecolor'] = this.parseSingleColorForGradient(props['chart.strokecolor']);
props['chart.axis.color'] = this.parseSingleColorForGradient(props['chart.axis.color']);
}
/**
* This parses a single color value
*/
RGraph.Bar.prototype.parseSingleColorForGradient = function (color)
{
if (!color || typeof(color) != 'string') {
return color;
}
if (color.match(/^gradient\((.*)\)$/i)) {
var parts = RegExp.$1.split(':');
// Create the gradient
var grad = this.context.createLinearGradient(0,this.canvas.height - this.properties['chart.gutter.bottom'], 0, this.properties['chart.gutter.top']);
var diff = 1 / (parts.length - 1);
grad.addColorStop(0, RGraph.trim(parts[0]));
for (var j=1; j<parts.length; ++j) {
grad.addColorStop(j * diff, RGraph.trim(parts[j]));
}
}
return grad ? grad : color;
}