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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 horizontal bar chart constructor. The horizontal bar is a minor variant
* on the bar chart. If you have big labels, this may be useful as there is usually
* more space available for them.
*
* @param object canvas The canvas object
* @param array data The chart data
*/
RGraph.HBar = 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.data = data;
this.type = 'hbar';
this.coords = [];
this.isRGraph = true;
/**
* Compatibility with older browsers
*/
RGraph.OldBrowserCompat(this.context);
this.max = 0;
this.stackedOrGrouped = false;
// Default properties
this.properties = {
'chart.gutter.left': 75,
'chart.gutter.right': 25,
'chart.gutter.top': 35,
'chart.gutter.bottom': 25,
'chart.background.grid': true,
'chart.background.grid.color': '#ddd',
'chart.background.grid.width': 1,
'chart.background.grid.hsize': 25,
'chart.background.grid.vsize': 25,
'chart.background.barcolor1': 'white',
'chart.background.barcolor2': 'white',
'chart.background.grid.hlines': true,
'chart.background.grid.vlines': true,
'chart.background.grid.border': true,
'chart.background.grid.autofit':true,
'chart.background.grid.autofit.numhlines': 14,
'chart.background.grid.autofit.numvlines': 20,
'chart.title': '',
'chart.title.background': null,
'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.xaxis.pos': null,
'chart.title.yaxis.pos': 10,
'chart.title.hpos': null,
'chart.title.vpos': null,
'chart.title.bold': true,
'chart.title.font': null,
'chart.text.size': 10,
'chart.text.color': 'black',
'chart.text.font': 'Arial',
'chart.colors': ['red', 'blue', 'green', 'pink', 'yellow', 'cyan', 'navy', 'gray', 'black'],
'chart.labels': [],
'chart.labels.above': false,
'chart.labels.above.decimals': 0,
'chart.xlabels': true,
'chart.contextmenu': null,
'chart.key': [],
'chart.key.background': 'white',
'chart.key.position': 'graph',
'chart.key.halign': 'right',
'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.color.shape': 'square',
'chart.key.rounded': true,
'chart.key.linewidth': 1,
'chart.key.colors': null,
'chart.units.pre': '',
'chart.units.post': '',
'chart.units.ingraph': false,
'chart.strokestyle': 'black',
'chart.xmin': 0,
'chart.xmax': 0,
'chart.axis.color': 'black',
'chart.shadow': false,
'chart.shadow.color': '#666',
'chart.shadow.blur': 3,
'chart.shadow.offsetx': 3,
'chart.shadow.offsety': 3,
'chart.vmargin': 3,
'chart.grouping': 'grouped',
'chart.tooltips': null,
'chart.tooltips.event': 'onclick',
'chart.tooltips.effect': 'fade',
'chart.tooltips.css.class': 'RGraph_tooltip',
'chart.tooltips.highlight': true,
'chart.highlight.fill': 'rgba(255,255,255,0.5)',
'chart.highlight.stroke': 'black',
'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.mode': 'canvas',
'chart.zoom.thumbnail.width': 75,
'chart.zoom.thumbnail.height': 75,
'chart.zoom.thumbnail.fixed': false,
'chart.zoom.background': true,
'chart.zoom.action': 'zoom',
'chart.resizable': false,
'chart.resize.handle.adjust': [0,0],
'chart.resize.handle.background': null,
'chart.scale.point': '.',
'chart.scale.thousand': ',',
'chart.scale.decimals': null,
'chart.noredraw': false
}
// Check for support
if (!this.canvas) {
alert('[HBAR] No canvas support');
return;
}
for (i=0; i<this.data.length; ++i) {
if (typeof(this.data[i]) == 'object') {
this.stackedOrGrouped = true;
}
}
/**
* Set the .getShape commonly named method
*/
this.getShape = this.getBar;
}
/**
* A setter
*
* @param name string The name of the property to set
* @param value mixed The value of the property
*/
RGraph.HBar.prototype.Set = function (name, value)
{
if (name == 'chart.labels.abovebar') {
name = 'chart.labels.above';
}
this.properties[name.toLowerCase()] = value;
}
/**
* A getter
*
* @param name string The name of the property to get
*/
RGraph.HBar.prototype.Get = function (name)
{
if (name == 'chart.labels.abovebar') {
name = 'chart.labels.above';
}
return this.properties[name];
}
/**
* The function you call to draw the bar chart
*/
RGraph.HBar.prototype.Draw = function ()
{
/**
* Fire the onbeforedraw event
*/
RGraph.FireCustomEvent(this, 'onbeforedraw');
/**
* Clear all of this canvases event handlers (the ones installed by RGraph)
*/
RGraph.ClearEventListeners(this.id);
/**
* This is new in May 2011 and facilitates indiviual gutter settings,
* eg chart.gutter.left
*/
this.gutterLeft = this.Get('chart.gutter.left');
this.gutterRight = this.Get('chart.gutter.right');
this.gutterTop = this.Get('chart.gutter.top');
this.gutterBottom = this.Get('chart.gutter.bottom');
/**
* Stop the coords array from growing uncontrollably
*/
this.coords = [];
this.max = 0;
/**
* Check for chart.xmin in stacked charts
*/
if (this.Get('chart.xmin') > 0 && this.Get('chart.grouping') == 'stacked') {
alert('[HBAR] Using chart.xmin is not supported with stacked charts, resetting chart.xmin to zero');
this.Set('chart.xmin', 0);
}
/**
* 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.graphwidth = this.canvas.width - this.gutterLeft - this.gutterRight;
this.graphheight = this.canvas.height - this.gutterTop - this.gutterBottom;
this.halfgrapharea = this.grapharea / 2;
this.halfTextHeight = this.Get('chart.text.size') / 2;
// Progressively Draw the chart
RGraph.background.Draw(this);
this.Drawbars();
this.DrawAxes();
this.DrawLabels();
// Draw the key if necessary
if (this.Get('chart.key').length) {
RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.colors'));
}
/**
* Install the event handlers for tooltips
*/
if (this.Get('chart.tooltips')) {
// Need to register this object for redrawing
RGraph.Register(this);
/**
* Install the window onclick handler
*/
window.onclick = function ()
{
RGraph.Redraw();
}
/**
* If the cursor is over a hotspot, change the cursor to a hand
*/
//this.canvas.onmousemove = function (e)
var canvas_onmousemove_func = function (e)
{
e = RGraph.FixEventObject(e);
var canvas = document.getElementById(this.id);
var obj = canvas.__object__;
var bar = obj.getBar(e);
/**
* Get the mouse X/Y coordinates
*/
var mouseCoords = RGraph.getMouseXY(e);
if (bar && (typeof(obj.Get('chart.tooltips')) == 'function' || obj.Get('chart.tooltips')[bar[4]]) ) {
canvas.style.cursor = 'pointer';
var left = bar[0];
var top = bar[1];
var width = bar[2];
var height = bar[3];
var idx = bar[4];
/**
* Show the tooltip if the event is onmousemove
*/
if (obj.Get('chart.tooltips.event') == 'onmousemove') {
var tooltipObj = RGraph.Registry.Get('chart.tooltip');
/**
* Get the tooltip text
*/
if (typeof(obj.Get('chart.tooltips')) == 'function') {
var text = obj.Get('chart.tooltips')(idx);
} else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[idx]) == 'function') {
var text = obj.Get('chart.tooltips')[idx](idx);
} else if (typeof(obj.Get('chart.tooltips')) == 'object') {
var text = obj.Get('chart.tooltips')[idx];
} else {
var text = null;
}
if (text) {
if (!tooltipObj || tooltipObj.__index__ != idx) {
RGraph.HideTooltip();
RGraph.Redraw();
obj.context.beginPath();
obj.context.strokeStyle = obj.Get('chart.highlight.stroke');
obj.context.fillStyle = obj.Get('chart.highlight.fill');
obj.context.strokeRect(left, top, width, height);
obj.context.fillRect(left, top, width, height);
RGraph.Tooltip(canvas, text, e.pageX, e.pageY, idx);
}
return;
}
}
}
if (!bar) {
canvas.style.cursor = 'default';
}
}
this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false);
RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func);
/**
* Install the onclick event handler for the tooltips
*/
//this.canvas.onclick = function (e)
var canvas_onclick_func = function (e)
{
e = RGraph.FixEventObject(e);
//var canvas = document.getElementById(this.id);
var canvas = e.target;
var obj = canvas.__object__;
var bar = obj.getBar(e);
/**
* Redraw the graph first, in effect resetting the graph to as it was when it was first drawn
* This "deselects" any already selected bar
*/
RGraph.Redraw();
/**
* Get the mouse X/Y coordinates
*/
var mouseCoords = RGraph.getMouseXY(e);
/*******************************************************
* Only do this if a bar is being hovered over
*******************************************************/
if (bar) {
var left = bar[0];
var top = bar[1];
var width = bar[2];
var height = bar[3];
var idx = bar[4];
/**
* Get the tooltip text
*/
if (typeof(obj.Get('chart.tooltips')) == 'function') {
var text = obj.Get('chart.tooltips')(idx);
} else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[idx]) == 'function') {
var text = obj.Get('chart.tooltips')[idx](idx);
} else if (typeof(obj.Get('chart.tooltips')) == 'object') {
var text = obj.Get('chart.tooltips')[idx];
} else {
var text = null;
}
/**
* Show a tooltip if it's defined
*/
if (String(text).length && text != null) {
obj.context.beginPath();
obj.context.strokeStyle = obj.Get('chart.highlight.stroke');
obj.context.fillStyle = obj.Get('chart.highlight.fill');
obj.context.strokeRect(left, top, width, height);
obj.context.fillRect(left, top, width, height);
obj.context.stroke();
obj.context.fill();
RGraph.Tooltip(canvas, text, e.pageX, e.pageY, idx);
}
}
/**
* Stop the event bubbling
*/
e.stopPropagation();
}
this.canvas.addEventListener('click', canvas_onclick_func, false);
RGraph.AddEventListener(this.id,'click', canvas_onclick_func);
// This resets the bar graph
if (RGraph.Registry.Get('chart.tooltip')) {
RGraph.Registry.Get('chart.tooltip').style.display = 'none';
RGraph.Registry.Set('chart.tooltip', null)
}
}
/**
* Setup the context menu if required
*/
if (this.Get('chart.contextmenu')) {
RGraph.ShowContext(this);
}
/**
* Draw "in graph" labels
*/
RGraph.DrawInGraphLabels(this);
/**
* If the canvas is annotatable, do install the event handlers
*/
if (this.Get('chart.annotatable')) {
RGraph.Annotate(this);
}
/**
* This bit shows the mini zoom window if requested
*/
if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') {
RGraph.ShowZoomWindow(this);
}
/**
* This function enables resizing
*/
if (this.Get('chart.resizable')) {
RGraph.AllowResizing(this);
}
/**
* Fire the RGraph ondraw event
*/
RGraph.FireCustomEvent(this, 'ondraw');
}
/**
* This draws the axes
*/
RGraph.HBar.prototype.DrawAxes = function ()
{
var halfway = (this.graphwidth / 2) + this.gutterLeft;
this.context.beginPath();
this.context.lineWidth = 1;
this.context.strokeStyle = this.Get('chart.axis.color');
// Draw the Y axis
if (this.Get('chart.yaxispos') == 'center') {
this.context.moveTo(AA(this, halfway), this.gutterTop);
this.context.lineTo(AA(this, halfway), this.canvas.height - this.gutterBottom);
} else {
this.context.moveTo(AA(this, this.gutterLeft), this.gutterTop);
this.context.lineTo(AA(this, this.gutterLeft), this.canvas.height - this.gutterBottom);
}
// Draw the X axis
this.context.moveTo(this.gutterLeft, AA(this, RGraph.GetHeight(this) - this.gutterBottom));
this.context.lineTo(this.canvas.width - this.gutterRight, AA(this, this.canvas.height - this.gutterBottom));
// Draw the Y tickmarks
var yTickGap = (this.canvas.height - this.gutterTop - this.gutterBottom) / this.data.length;
for (y=this.gutterTop; y<(this.canvas.height - this.gutterBottom - 1); y+=yTickGap) {
if (this.Get('chart.yaxispos') == 'center') {
this.context.moveTo(halfway + 3, AA(this, y));
this.context.lineTo(halfway - 3, AA(this, y));
} else {
this.context.moveTo(this.gutterLeft, AA(this, y));
this.context.lineTo( this.gutterLeft - 3, AA(this, y));
}
}
// Draw the X tickmarks
xTickGap = (this.canvas.width - this.gutterLeft - this.gutterRight ) / 10;
yStart = this.canvas.height - this.gutterBottom;
yEnd = (this.canvas.height - this.gutterBottom) + 3;
for (x=(this.canvas.width - this.gutterRight), i=0; this.Get('chart.yaxispos') == 'center' ? x>=this.gutterLeft : x>this.gutterLeft; x-=xTickGap) {
if (this.Get('chart.yaxispos') != 'center' || i != 5) {
this.context.moveTo(AA(this, x), yStart);
this.context.lineTo(AA(this, x), yEnd);
}
i++;
}
this.context.stroke();
}
/**
* This draws the labels for the graph
*/
RGraph.HBar.prototype.DrawLabels = function ()
{
var context = this.context;
var canvas = this.canvas;
var units_pre = this.Get('chart.units.pre');
var units_post = this.Get('chart.units.post');
var text_size = this.Get('chart.text.size');
var font = this.Get('chart.text.font');
/**
* Set the units to blank if they're to be used for ingraph labels only
*/
if (this.Get('chart.units.ingraph')) {
units_pre = '';
units_post = '';
}
/**
* Draw the X axis labels
*/
if (this.Get('chart.xlabels')) {
var gap = 5;
this.context.beginPath();
this.context.fillStyle = this.Get('chart.text.color');
if (this.Get('chart.yaxispos') == 'center') {
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (10/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (9/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (8/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (7/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (6/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (4/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, '-' + RGraph.number_format(this, Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (3/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, '-' + RGraph.number_format(this, Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (2/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, '-' + RGraph.number_format(this, Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (1/10)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, '-' + RGraph.number_format(this, Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (0)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, '-' + RGraph.number_format(this, Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
} else {
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (5/5)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (4/5)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (3/5)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (2/5)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
RGraph.Text(context, font, text_size, this.gutterLeft + (this.graphwidth * (1/5)), this.gutterTop + this.halfTextHeight + this.graphheight + gap, RGraph.number_format(this, Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')), units_pre, units_post), 'center', 'center');
if (this.Get('chart.xmin') > 0) {
RGraph.Text(context,font,text_size,this.gutterLeft,this.gutterTop + this.halfTextHeight + this.graphheight + 2,RGraph.number_format(this, this.Get('chart.xmin'), units_pre, units_post),'center','center');
}
}
this.context.fill();
this.context.stroke();
}
/**
* The Y axis labels
*/
if (typeof(this.Get('chart.labels')) == 'object') {
var xOffset = 5;
var font = this.Get('chart.text.font');
// Draw the X axis labels
this.context.fillStyle = this.Get('chart.text.color');
// How wide is each bar
var barHeight = (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom ) / this.Get('chart.labels').length;
// Reset the xTickGap
yTickGap = (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / this.Get('chart.labels').length
// Draw the X tickmarks
var i=0;
for (y=this.gutterTop + (yTickGap / 2); y<=RGraph.GetHeight(this) - this.gutterBottom; y+=yTickGap) {
RGraph.Text(this.context, font,this.Get('chart.text.size'),this.gutterLeft - xOffset,y,String(this.Get('chart.labels')[i++]),'center','right');
}
}
}
/**
* This function draws the actual bars
*/
RGraph.HBar.prototype.Drawbars = function ()
{
this.context.lineWidth = 1;
this.context.strokeStyle = this.Get('chart.strokestyle');
this.context.fillStyle = this.Get('chart.colors')[0];
var prevX = 0;
var prevY = 0;
/**
* Work out the max value
*/
if (this.Get('chart.xmax')) {
this.scale = [
(((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.2) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')),
(((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.4) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')),
(((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.6) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')),
(((this.Get('chart.xmax') - this.Get('chart.xmin')) * 0.8) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')),
(((this.Get('chart.xmax') - this.Get('chart.xmin')) + this.Get('chart.xmin'))).toFixed(this.Get('chart.scale.decimals'))
];
this.max = this.scale[4];
} else {
var grouping = this.Get('chart.grouping');
for (i=0; i<this.data.length; ++i) {
if (typeof(this.data[i]) == 'object') {
var value = grouping == 'grouped' ? Number(RGraph.array_max(this.data[i], true)) : Number(RGraph.array_sum(this.data[i])) ;
} else {
var value = Number(Math.abs(this.data[i]));
}
this.max = Math.max(Math.abs(this.max), Math.abs(value));
}
this.scale = RGraph.getScale(this.max, this);
/**
* Account for chart.xmin
*/
if (this.Get('chart.xmin') > 0) {
this.scale[0] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.2) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')));
this.scale[1] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.4) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')));
this.scale[2] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.6) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')));
this.scale[3] = Number((((this.scale[4] - this.Get('chart.xmin')) * 0.8) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')));
this.scale[4] = Number((((this.scale[4] - this.Get('chart.xmin')) * 1.0) + this.Get('chart.xmin')).toFixed(this.Get('chart.scale.decimals')));
}
this.max = this.scale[4];
}
if (this.Get('chart.scale.decimals') == null && Number(this.max) == 1) {
this.Set('chart.scale.decimals', 1);
}
/*******************************************************
* This is here to facilitate sequential colors
*******************************************************/
var colorIdx = 0;
/**
* The bars are drawn HERE
*/
var graphwidth = (this.canvas.width - this.gutterLeft - this.gutterRight);
var halfwidth = graphwidth / 2;
for (i=0; i<this.data.length; ++i) {
// Work out the width and height
var width = (this.data[i] / this.max) * graphwidth;
var height = this.graphheight / this.data.length;
var orig_height = height;
var x = this.gutterLeft;
var y = this.gutterTop + (i * height);
var vmargin = this.Get('chart.vmargin');
// Account for negative lengths - Some browsers (eg Chrome) don't like a negative value
if (width < 0) {
x -= width;
width = Math.abs(width);
}
/**
* Turn on the shadow if need be
*/
if (this.Get('chart.shadow')) {
this.context.shadowColor = this.Get('chart.shadow.color');
this.context.shadowBlur = this.Get('chart.shadow.blur');
this.context.shadowOffsetX = this.Get('chart.shadow.offsetx');
this.context.shadowOffsetY = this.Get('chart.shadow.offsety');
}
/**
* Draw the bar
*/
this.context.beginPath();
if (typeof(this.data[i]) == 'number') {
var barHeight = height - (2 * vmargin);
var barWidth = ((this.data[i] - this.Get('chart.xmin')) / (this.max - this.Get('chart.xmin'))) * this.graphwidth;
var barX = this.gutterLeft;
// Account for Y axis pos
if (this.Get('chart.yaxispos') == 'center') {
barWidth /= 2;
barX += halfwidth;
}
// Set the fill color
this.context.strokeStyle = this.Get('chart.strokestyle');
this.context.fillStyle = this.Get('chart.colors')[0];
// Sequential colors
if (this.Get('chart.colors.sequential')) {
this.context.fillStyle = this.Get('chart.colors')[colorIdx++];
}
this.context.strokeRect(barX, this.gutterTop + (i * height) + this.Get('chart.vmargin'), barWidth, barHeight);
this.context.fillRect(barX, this.gutterTop + (i * height) + this.Get('chart.vmargin'), barWidth, barHeight);
this.coords.push([barX,
y + vmargin,
barWidth,
height - (2 * vmargin),
this.context.fillStyle,
this.data[i],
true]);
/**
* Stacked bar chart
*/
} else if (typeof(this.data[i]) == 'object' && this.Get('chart.grouping') == 'stacked') {
if (this.Get('chart.yaxispos') == 'center') {
alert('[HBAR] You can\'t have a stacked chart with the Y axis in the center, change it to grouped');
}
var barHeight = height - (2 * vmargin);
for (j=0; j<this.data[i].length; ++j) {
// Set the fill/stroke colors
this.context.strokeStyle = this.Get('chart.strokestyle');
this.context.fillStyle = this.Get('chart.colors')[j];
// Sequential colors
if (this.Get('chart.colors.sequential')) {
this.context.fillStyle = this.Get('chart.colors')[colorIdx++];
}
var width = (((this.data[i][j]) / (this.max))) * this.graphwidth;
var totalWidth = (RGraph.array_sum(this.data[i]) / this.max) * this.graphwidth;
this.context.strokeRect(x, this.gutterTop + this.Get('chart.vmargin') + (this.graphheight / this.data.length) * i, width, height - (2 * vmargin) );
this.context.fillRect(x, this.gutterTop + this.Get('chart.vmargin') + (this.graphheight / this.data.length) * i, width, height - (2 * vmargin) );
/**
* Store the coords for tooltips
*/
// The last property of this array is a boolean which tells you whether the value is the last or not
this.coords.push([x,
y + vmargin,
width,
height - (2 * vmargin),
this.context.fillStyle,
RGraph.array_sum(this.data[i]),
j == (this.data[i].length - 1)
]);
x += width;
}
/**
* A grouped bar chart
*/
} else if (typeof(this.data[i]) == 'object' && this.Get('chart.grouping') == 'grouped') {
for (j=0; j<this.data[i].length; ++j) {
/**
* Turn on the shadow if need be
*/
if (this.Get('chart.shadow')) {
RGraph.SetShadow(this, this.Get('chart.shadow.color'), this.Get('chart.shadow.offsetx'), this.Get('chart.shadow.offsety'), this.Get('chart.shadow.blur'));
}
// Set the fill/stroke colors
this.context.strokeStyle = this.Get('chart.strokestyle');
this.context.fillStyle = this.Get('chart.colors')[j];
// Sequential colors
if (this.Get('chart.colors.sequential')) {
this.context.fillStyle = this.Get('chart.colors')[colorIdx++];
}
var width = ((this.data[i][j] - this.Get('chart.xmin')) / (this.max - this.Get('chart.xmin'))) * (RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight );
var individualBarHeight = (height - (2 * vmargin)) / this.data[i].length;
var startX = this.gutterLeft;
var startY = y + vmargin + (j * individualBarHeight);
// Account for the Y axis being in the middle
if (this.Get('chart.yaxispos') == 'center') {
width /= 2;
startX += halfwidth;
}
if (width < 0) {
startX += width;
width *= -1;
}
this.context.strokeRect(startX, startY, width, individualBarHeight);
this.context.fillRect(startX, startY, width, individualBarHeight);
this.coords.push([startX,
startY,
width,
individualBarHeight,
this.context.fillStyle,
this.data[i][j],
true]);
}
}
this.context.closePath();
}
this.context.fill();
this.context.stroke();
/**
* Now the bars are stroke()ed, turn off the shadow
*/
RGraph.NoShadow(this);
this.RedrawBars();
}
/**
* This function goes over the bars after they been drawn, so that upwards shadows are underneath the bars
*/
RGraph.HBar.prototype.RedrawBars = function ()
{
if (this.Get('chart.noredraw')) {
return;
}
var coords = this.coords;
var font = this.Get('chart.text.font');
var size = this.Get('chart.text.size');
var color = this.Get('chart.text.color');
RGraph.NoShadow(this);
this.context.strokeStyle = this.Get('chart.strokestyle');
for (var i=0; i<coords.length; ++i) {
if (this.Get('chart.shadow')) {
this.context.beginPath();
this.context.strokeStyle = this.Get('chart.strokestyle');
this.context.fillStyle = coords[i][4];
this.context.lineWidth = 1;
this.context.strokeRect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]);
this.context.fillRect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]);
this.context.fill();
this.context.stroke();
}
/**
* Draw labels "above" the bar
*/
if (this.Get('chart.labels.above') && coords[i][6]) {
this.context.fillStyle = color;
this.context.strokeStyle = 'black';
RGraph.NoShadow(this);
var border = (coords[i][0] + coords[i][2] + 7 + this.context.measureText(this.Get('chart.units.pre') + this.coords[i][5] + this.Get('chart.units.post')).width) > RGraph.GetWidth(this) ? true : false;
RGraph.Text(this.context,
font,
size,
coords[i][0] + coords[i][2] + (border ? -5 : 5),
coords[i][1] + (coords[i][3] / 2),
RGraph.number_format(this, (this.coords[i][5]).toFixed(this.Get('chart.labels.above.decimals')), this.Get('chart.units.pre'), this.Get('chart.units.post')),
'center',
border ? 'right' : 'left',
border,
null,
border ? 'rgba(255,255,255,0.9)' : null);
}
}
}
/*******************************************************
* This function can be used to get the appropriate bar information (if any)
*
* @param e Event object
* @return Appriate bar information (if any)
*******************************************************/
RGraph.HBar.prototype.getBar = function (e)
{
var obj = e.target.__object__;
var canvas = obj.canvas;
var context = obj.context;
var mouseCoords = RGraph.getMouseXY(e);
/**
* Loop through the bars determining if the mouse is over a bar
*/
for (var i=0,len=obj.coords.length; i<len; i++) {
var mouseX = mouseCoords[0]; // In relation to the canvas
var mouseY = mouseCoords[1]; // In relation to the canvas
var left = obj.coords[i][0];
var top = obj.coords[i][1];
var width = obj.coords[i][2];
var height = obj.coords[i][3];
var idx = i;
if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height) ) {
return [left, top, width, height, idx];
}
}
}