// version: 2015-11-02
/**
* o--------------------------------------------------------------------------------o
* | This file is part of the RGraph package - you can learn more at: |
* | |
* | http://www.rgraph.net |
* | |
* | RGraph is dual licensed under the Open Source GPL (General Public License) |
* | v2.0 license and a commercial license which means that you're not bound by |
* | the terms of the GPL. The commercial license is just �99 (GBP) and you can |
* | read about it here: |
* | http://www.rgraph.net/license |
* o--------------------------------------------------------------------------------o
*/
RGraph = window.RGraph || {isRGraph: true};
/**
* The bar chart constructor
*
* @param object canvas The canvas object
* @param array data The chart data
*/
RGraph.Bar = function (conf)
{
/**
* Allow for object config style
*/
if (typeof conf === 'object' && typeof conf.data === 'object'&& typeof conf.id === 'string') {
var id = conf.id,
canvas = document.getElementById(id),
data = conf.data,
parseConfObjectForOptions = true // Set this so the config is parsed (at the end of the constructor)
} else {
var id = conf,
canvas = document.getElementById(id),
data = arguments[1]
}
// Get the canvas and context objects
this.id = id;
this.canvas = canvas;
this.context = this.canvas.getContext('2d');
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;
this.original_colors = [];
this.cachedBackgroundCanvas = null;
this.firstDraw = true; // After the first draw this will be 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.align': true,
'chart.background.grid.autofit.numhlines': 5,
'chart.background.grid.autofit.numvlines': 20,
'chart.background.grid.dashed': false,
'chart.background.grid.dotted': false,
'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.background.color': null,
'chart.background.hbars': null,
'chart.numyticks': 10,
'chart.hmargin': 5,
'chart.hmargin.grouped': 1,
'chart.strokecolor': 'white',
'chart.axis.color': 'black',
'chart.axis.linewidth': 1,
'chart.gutter.top': 25,
'chart.gutter.bottom': 30,
'chart.gutter.left': 25,
'chart.gutter.right': 25,
'chart.labels': null,
'chart.labels.bold': false,
'chart.labels.color': null,
'chart.labels.ingraph': null,
'chart.labels.above': false,
'chart.labels.above.decimals': 0,
'chart.labels.above.size': null,
'chart.labels.above.color': null,
'chart.labels.above.angle': null,
'chart.labels.above.offset': 4,
'chart.labels.above.units.pre': '',
'chart.labels.above.units.post':'',
'chart.ylabels': true,
'chart.ylabels.count': 5,
'chart.ylabels.inside': false,
'chart.xlabels.offset': 0,
'chart.xaxispos': 'bottom',
'chart.yaxispos': 'left',
'chart.text.angle': 0,
'chart.text.color': 'black', // Gradients aren't supported for this color
'chart.text.size': 12,
'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.title.yaxis.x': null,
'chart.title.yaxis.y': null,
'chart.title.xaxis.x': null,
'chart.title.xaxis.y': null,
'chart.title.x': null,
'chart.title.y': null,
'chart.title.halign': null,
'chart.title.valign': null,
'chart.colors': [
'Gradient(#F9D5C9:#E65F2D:#E65F2D:#E65F2D)',
'Gradient(#F7DCD1:#D4592A:#D4592A:#D4592A)',
'Gradient(#DEE5EA:#B5C3CE:#B5C3CE:#B5C3CE)',
'Gradient(#E5E5E3:#545451:#545451:#545451)',
'Gradient(#F6E5D2:#E9C294:#E9C294:#E9C294)',
'Gradient(#F5EAD3:#D6AA4E:#D6AA4E:#D6AA4E)'
],
'chart.colors.sequential': false,
'chart.colors.reverse': false,
'chart.grouping': 'grouped',
'chart.variant': 'bar',
'chart.variant.sketch.verticals': true,
'chart.variant.threed.angle': 0.1,
'chart.variant.threed.offsetx': 10,
'chart.variant.threed.offsety': 5,
'chart.shadow': true,
'chart.shadow.color': '#aaa', // Gradients aren't supported for this color
'chart.shadow.offsetx': 0,
'chart.shadow.offsety': 0,
'chart.shadow.blur': 15,
'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.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':false,
'chart.key.position.x': null,
'chart.key.position.y': null,
'chart.key.interactive': false,
'chart.key.interactive.highlight.chart.stroke':'black',
'chart.key.interactive.highlight.chart.fill':'rgba(255,255,255,0.7)',
'chart.key.interactive.highlight.label':'rgba(255,0,0,0.2)',
'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.key.text.color': 'black',
'chart.contextmenu': null,
'chart.units.pre': '',
'chart.units.post': '',
'chart.scale.decimals': 0,
'chart.scale.point': '.',
'chart.scale.thousand': ',',
'chart.scale.round': false,
'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.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,
'chart.bevel': false
}
// 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' && !RGraph.is_null(data[i])) {
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.coords2 = [];
this.coordsText = [];
/**
* 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);
/**
* Translate half a pixel for antialiasing purposes - but only if it hasn't beeen
* done already
*/
if (!this.canvas.__rgraph_aa_translated__) {
this.context.translate(0.5,0.5);
this.canvas.__rgraph_aa_translated__ = true;
}
// Short variable names
var RG = RGraph,
ca = this.canvas,
co = ca.getContext('2d'),
prop = this.properties,
pa = RG.Path,
pa2 = RG.path2,
win = window,
doc = document,
ma = Math
/**
* "Decorate" the object with the generic effects if the effects library has been included
*/
if (RG.Effects && typeof RG.Effects.decorate === 'function') {
RG.Effects.decorate(this);
}
/**
* A setter
*
* @param name string The name of the property to set
* @param value mixed The value of the property
*/
this.set =
this.Set = function (name)
{
var value = typeof arguments[1] === 'undefined' ? null : arguments[1];
/**
* the number of arguments is only one and it's an
* object - parse it for configuration data and return.
*/
if (arguments.length === 1 && typeof arguments[0] === 'object') {
RG.parseObjectStyleConfig(this, arguments[0]);
return this;
}
/**
* This should be done first - prepend the propertyy name with "chart." if necessary
*/
if (name.substr(0,6) != 'chart.') {
name = 'chart.' + name;
}
// Convert uppercase letters to dot+lower case letter
name = name.replace(/([A-Z])/g, function (str)
{
return '.' + String(RegExp.$1).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;
}
prop[name] = value;
return this;
};
/**
* A getter
*
* @param name string The name of the property to get
*/
this.get =
this.Get = function (name)
{
/**
* This should be done first - prepend the property name with "chart." if necessary
*/
if (name.substr(0,6) != 'chart.') {
name = 'chart.' + name;
}
// Convert uppercase letters to dot+lower case letter
name = name.replace(/([A-Z])/g, function (str)
{
return '.' + String(RegExp.$1).toLowerCase()
});
return prop[name];
};
/**
* The function you call to draw the bar chart
*/
this.draw =
this.Draw = function ()
{
// MUST be the first thing done!
if (typeof(prop['chart.background.image']) == 'string') {
RG.DrawBackgroundImage(this);
}
/**
* Fire the onbeforedraw event
*/
RG.FireCustomEvent(this, 'onbeforedraw');
//
// If the chart is 3d then angle it it
//
if (prop['chart.variant'] === '3d') {
co.setTransform(1,prop['chart.variant.threed.angle'],0,1,0.5,0.5);
}
/**
* 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 = prop['chart.gutter.left'];
this.gutterRight = prop['chart.gutter.right'];
this.gutterTop = prop['chart.gutter.top'];
this.gutterBottom = prop['chart.gutter.bottom'];
// 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 ( (prop['chart.variant'] == 'pyramid' || prop['chart.variant'] == 'dot')
&& typeof(prop['chart.tooltips']) == 'object'
&& prop['chart.tooltips']
&& prop['chart.tooltips'].length > 0) {
alert('[BAR] (' + this.id + ') Sorry, tooltips are not supported with dot or pyramid charts');
}
/**
* Stop the coords arrays from growing uncontrollably
*/
this.coords = [];
this.coords2 = [];
this.coordsText = [];
/**
* 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 = ca.height - this.gutterTop - this.gutterBottom;
this.halfgrapharea = this.grapharea / 2;
this.halfTextHeight = prop['chart.text.size'] / 2;
// Now draw the background on to the main canvas
RG.background.Draw(this);
//If it's a sketch chart variant, draw the axes first
if (prop['chart.variant'] == 'sketch') {
this.DrawAxes();
this.Drawbars();
} else {
this.Drawbars();
this.DrawAxes();
}
this.DrawLabels();
/**
* Draw the bevel if required
*/
if (prop['chart.bevel'] || prop['chart.bevelled']) {
this.DrawBevel();
}
// Draw the key if necessary
if (prop['chart.key'] && prop['chart.key'].length) {
RG.DrawKey(this, prop['chart.key'], prop['chart.colors']);
}
/**
* Setup the context menu if required
*/
if (prop['chart.contextmenu']) {
RG.ShowContext(this);
}
/**
* Draw "in graph" labels
*/
if (prop['chart.labels.ingraph']) {
RG.DrawInGraphLabels(this);
}
/**
* This function enables resizing
*/
if (prop['chart.resizable']) {
RG.AllowResizing(this);
}
/**
* This installs the event listeners
*/
RG.InstallEventListeners(this);
/**
* Fire the onfirstdraw event
*/
if (this.firstDraw) {
RG.fireCustomEvent(this, 'onfirstdraw');
this.firstDraw = false;
this.firstDrawFunc();
}
/**
* Fire the RGraph ondraw event
*/
RG.fireCustomEvent(this, 'ondraw');
return this;
};
/**
* Used in chaining. Runs a function there and then - not waiting for
* the events to fire (eg the onbeforedraw event)
*
* @param function func The function to execute
*/
this.exec = function (func)
{
func(this);
return this;
};
/**
* Draws the charts axes
*/
this.drawAxes =
this.DrawAxes = function ()
{
if (prop['chart.noaxes']) {
return;
}
var xaxispos = prop['chart.xaxispos'];
var yaxispos = prop['chart.yaxispos'];
var isSketch = prop['chart.variant'] == 'sketch';
co.beginPath();
co.strokeStyle = prop['chart.axis.color'];
co.lineWidth = prop['chart.axis.linewidth'] + 0.001;
if (RG.ISSAFARI == -1) {
co.lineCap = 'square';
}
// Draw the Y axis
if (prop['chart.noyaxis'] == false) {
if (yaxispos == 'right') {
co.moveTo(ca.width - this.gutterRight + (isSketch ? 3 : 0), this.gutterTop - (isSketch ? 3 : 0));
co.lineTo(ca.width - this.gutterRight - (isSketch ? 2 : 0), ca.height - this.gutterBottom + (isSketch ? 5 : 0));
} else {
co.moveTo(this.gutterLeft - (isSketch ? 2 : 0), this.gutterTop - (isSketch ? 5 : 0));
co.lineTo(this.gutterLeft - (isSketch ? 1 : 0), ca.height - this.gutterBottom + (isSketch ? 5 : 0));
}
}
// Draw the X axis
if (prop['chart.noxaxis'] == false) {
if (xaxispos == 'center') {
co.moveTo(this.gutterLeft - (isSketch ? 5 : 0), Math.round(((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop + (isSketch ? 2 : 0)));
co.lineTo(ca.width - this.gutterRight + (isSketch ? 5 : 0), Math.round(((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - (isSketch ? 2 : 0)));
} else if (xaxispos == 'top') {
co.moveTo(this.gutterLeft - (isSketch ? 3 : 0), this.gutterTop - (isSketch ? 3 : 0));
co.lineTo(ca.width - this.gutterRight + (isSketch ? 5 : 0), this.gutterTop + (isSketch ? 2 : 0));
} else {
co.moveTo(this.gutterLeft - (isSketch ? 5 : 0), ca.height - this.gutterBottom - (isSketch ? 2 : 0));
co.lineTo(ca.width - this.gutterRight + (isSketch ? 8 : 0), ca.height - this.gutterBottom + (isSketch ? 2 : 0));
}
}
var numYTicks = prop['chart.numyticks'];
// Draw the Y tickmarks
if (prop['chart.noyaxis'] == false && !isSketch) {
var yTickGap = (ca.height - this.gutterTop - this.gutterBottom) / numYTicks;
var xpos = yaxispos == 'left' ? this.gutterLeft : ca.width - this.gutterRight;
if (this.properties['chart.numyticks'] > 0) {
for (y=this.gutterTop;
xaxispos == 'center' ? y <= (ca.height - this.gutterBottom) : y < (ca.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;
co.moveTo(xpos + (yaxispos == 'left' ? 0 : 0), Math.round(y));
co.lineTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(y));
}
}
/**
* If the X axis is not being shown, draw an extra tick
*/
if (prop['chart.noxaxis']) {
if (xaxispos == 'center') {
co.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(ca.height / 2));
co.lineTo(xpos, Math.round(ca.height / 2));
} else if (xaxispos == 'top') {
co.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(this.gutterTop));
co.lineTo(xpos, Math.round(this.gutterTop));
} else {
co.moveTo(xpos + (yaxispos == 'left' ? -3 : 3), Math.round(ca.height - this.gutterBottom));
co.lineTo(xpos, Math.round(ca.height - this.gutterBottom));
}
}
}
// Draw the X tickmarks
if (prop['chart.noxaxis'] == false && !isSketch) {
if (typeof(prop['chart.numxticks']) == 'number') {
var xTickGap = (ca.width - this.gutterLeft - this.gutterRight) / prop['chart.numxticks'];
} else {
var xTickGap = (ca.width - this.gutterLeft - this.gutterRight) / this.data.length;
}
if (xaxispos == 'bottom') {
yStart = ca.height - this.gutterBottom;
yEnd = (ca.height - this.gutterBottom) + 3;
} else if (xaxispos == 'top') {
yStart = this.gutterTop - 3;
yEnd = this.gutterTop;
} else if (xaxispos == 'center') {
yStart = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop + 3;
yEnd = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - 3;
}
yStart = yStart;
yEnd = yEnd;
//////////////// X TICKS ////////////////
var noEndXTick = prop['chart.noendxtick'];
for (x=this.gutterLeft + (yaxispos == 'left' ? xTickGap : 0),len=(ca.width - this.gutterRight + (yaxispos == 'left' ? 5 : 0)); x<len; x+=xTickGap) {
if (yaxispos == 'left' && !noEndXTick && x > this.gutterLeft) {
co.moveTo(Math.round(x), yStart);
co.lineTo(Math.round(x), yEnd);
} else if (yaxispos == 'left' && noEndXTick && x > this.gutterLeft && x < (ca.width - this.gutterRight) ) {
co.moveTo(Math.round(x), yStart);
co.lineTo(Math.round(x), yEnd);
} else if (yaxispos == 'right' && x < (ca.width - this.gutterRight) && !noEndXTick) {
co.moveTo(Math.round(x), yStart);
co.lineTo(Math.round(x), yEnd);
} else if (yaxispos == 'right' && x < (ca.width - this.gutterRight) && x > (this.gutterLeft) && noEndXTick) {
co.moveTo(Math.round(x), yStart);
co.lineTo(Math.round(x), yEnd);
}
}
if (prop['chart.noyaxis'] || prop['chart.numxticks'] == null) {
if (typeof(prop['chart.numxticks']) == 'number' && prop['chart.numxticks'] > 0) {
co.moveTo(Math.round(this.gutterLeft), yStart);
co.lineTo(Math.round(this.gutterLeft), yEnd);
}
}
//////////////// X TICKS ////////////////
}
/**
* If the Y axis is not being shown, draw an extra tick
*/
if (prop['chart.noyaxis'] && prop['chart.noxaxis'] == false && prop['chart.numxticks'] == null) {
if (xaxispos == 'center') {
co.moveTo(Math.round(this.gutterLeft), (ca.height / 2) - 3);
co.lineTo(Math.round(this.gutterLeft), (ca.height / 2) + 3);
} else {
co.moveTo(Math.round(this.gutterLeft), ca.height - this.gutterBottom);
co.lineTo(Math.round(this.gutterLeft), ca.height - this.gutterBottom + 3);
}
}
co.stroke();
};
/**
* Draws the bars
*/
this.drawbars =
this.Drawbars = function ()
{
co.lineWidth = prop['chart.linewidth'];
co.strokeStyle = prop['chart.strokecolor'];
co.fillStyle = prop['chart.colors'][0];
var prevX = 0;
var prevY = 0;
var decimals = prop['chart.scale.decimals'];
/**
* Work out the max value
*/
if (prop['chart.ymax']) {
this.scale2 = RG.getScale2(this, {
'max':prop['chart.ymax'],
'strict': prop['chart.scale.round'] ? false : true,
'min':prop['chart.ymin'],
'scale.thousand':prop['chart.scale.thousand'],
'scale.point':prop['chart.scale.point'],
'scale.decimals':prop['chart.scale.decimals'],
'ylabels.count':prop['chart.ylabels.count'],
'scale.round':prop['chart.scale.round'],
'units.pre': prop['chart.units.pre'],
'units.post': prop['chart.units.post']
});
} else {
for (i=0; i<this.data.length; ++i) {
if (typeof(this.data[i]) == 'object') {
var value = prop['chart.grouping'] == 'grouped' ? Number(RG.arrayMax(this.data[i], true)) : Number(RG.array_sum(this.data[i]));
} else {
var value = Number(this.data[i]);
}
this.max = ma.max(ma.abs(this.max), Math.abs(value));
}
this.scale2 = RGraph.getScale2(this, {
'max':this.max,
'min':prop['chart.ymin'],
'scale.thousand':prop['chart.scale.thousand'],
'scale.point':prop['chart.scale.point'],
'scale.decimals':prop['chart.scale.decimals'],
'ylabels.count':prop['chart.ylabels.count'],
'scale.round':prop['chart.scale.round'],
'units.pre': prop['chart.units.pre'],
'units.post': prop['chart.units.post']
});
this.max = this.scale2.max;
}
/**
* if the chart is adjustable fix the scale so that it doesn't change.
*/
if (prop['chart.adjustable'] && !prop['chart.ymax']) {
this.Set('chart.ymax', this.scale2.max);
}
/**
* Draw horizontal bars here
*/
if (prop['chart.background.hbars'] && prop['chart.background.hbars'].length > 0) {
RGraph.DrawBars(this);
}
var variant = prop['chart.variant'];
/**
* Draw the 3D axes is necessary
*/
if (variant === '3d') {
RG.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 = prop['chart.xaxispos'],
width = (ca.width - this.gutterLeft - this.gutterRight ) / this.data.length,
orig_height = height,
hmargin = prop['chart.hmargin'],
shadow = prop['chart.shadow'],
shadowColor = prop['chart.shadow.color'],
shadowBlur = prop['chart.shadow.blur'],
shadowOffsetX = prop['chart.shadow.offsetx'],
shadowOffsetY = prop['chart.shadow.offsety'],
strokeStyle = prop['chart.strokecolor'],
colors = prop['chart.colors'],
sequentialColorIndex = 0
for (i=0,len=this.data.length; i<len; i+=1) {
// 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.scale2.min : RGraph.array_sum(this.data[i]) - this.scale2.min) / (this.scale2.max - this.scale2.min) ) * (ca.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' ? ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop - height
: ca.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) {
co.shadowColor = shadowColor;
co.shadowBlur = shadowBlur;
co.shadowOffsetX = shadowOffsetX;
co.shadowOffsetY = shadowOffsetY;
}
/**
* Draw the bar
*/
co.beginPath();
if (typeof this.data[i] == 'number') {
var barWidth = width - (2 * hmargin);
/**
* Check for a negative bar width
*/
if (barWidth < 0) {
console.log('[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
co.strokeStyle = strokeStyle;
co.fillStyle = colors[0];
/**
* Sequential colors
*/
if (prop['chart.colors.sequential']) {
co.fillStyle = colors[i];
}
if (variant == 'sketch') {
co.lineCap = 'round';
var sketchOffset = 3;
co.beginPath();
co.strokeStyle = colors[0];
/**
* Sequential colors
*/
if (prop['chart.colors.sequential']) {
co.strokeStyle = colors[i];
}
// Left side
co.moveTo(x + hmargin + 2, y + height - 2);
co.lineTo(x + hmargin - 1, y - 4);
// The top
co.moveTo(x + hmargin - 3, y + -2 + (this.data[i] < 0 ? height : 0));
co.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
co.moveTo(x + hmargin + width - 5, y - 5);
co.lineTo(x + hmargin + width - 3, y + height - 3);
if (prop['chart.variant.sketch.verticals']) {
for (var r=0.2; r<=0.8; r+=0.2) {
co.moveTo(x + hmargin + width + (r > 0.4 ? -1 : 3) - (r * width),y - 1);
co.lineTo(x + hmargin + width - (r > 0.4 ? 1 : -1) - (r * width), y + height + (r == 0.2 ? 1 : -2));
}
}
co.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(co, x + hmargin, y, barWidth, height, 3, this.data[i] > 0, this.data[i] > 0, this.data[i] < 0, this.data[i] < 0);
RGraph.strokedCurvyRect(co, x + hmargin, y, barWidth, height, 3, this.data[i] > 0, this.data[i] > 0, this.data[i] < 0, this.data[i] < 0);
} else {
// On 9th April 2013 these two were swapped around so that the stroke happens SECOND so that any
// shadow that is cast by the fill does not overwrite the stroke
co.beginPath();
co.rect(x + hmargin, y, barWidth, height);
co.fill();
// Turn the shadow off so that the stroke doesn't cast any "extra" shadow
// that would show inside the bar
RG.NoShadow(this);
co.beginPath();
co.rect(x + hmargin, y, barWidth, height);
co.stroke();
}
// 3D effect
if (variant == '3d') {
var prevStrokeStyle = co.strokeStyle;
var prevFillStyle = co.fillStyle;
// Draw the top (if the value is positive - otherwise there's no point)
if (this.data[i] >= 0) {
co.beginPath();
co.moveTo(x + hmargin, y);
co.lineTo(x + hmargin + prop['chart.variant.threed.offsetx'], y - prop['chart.variant.threed.offsety']);
co.lineTo(x + hmargin + prop['chart.variant.threed.offsetx'] + barWidth, y - prop['chart.variant.threed.offsety']);
co.lineTo(x + hmargin + barWidth, y);
co.closePath();
co.stroke();
co.fill();
}
// Draw the right hand side
co.beginPath();
co.moveTo(x + hmargin + barWidth, y);
co.lineTo(
x + hmargin + barWidth + prop['chart.variant.threed.offsetx'],
this.data[i] < 0 && xaxispos === 'bottom' ? (ca.height - this.gutterBottom) : (this.data[i] < 0 && (y - prop['chart.variant.threed.offsety']) < (this.gutterTop + this.halfgrapharea) ? (this.gutterTop + this.halfgrapharea) : (y - prop['chart.variant.threed.offsety']))
);
co.lineTo(
x + hmargin + barWidth + prop['chart.variant.threed.offsetx'],
this.data[i] < 0 && (y - prop['chart.variant.threed.offsety'] + height) < (this.gutterTop + this.halfgrapharea)
? (this.gutterTop + this.halfgrapharea)
: this.data[i] > 0 ? y - prop['chart.variant.threed.offsety'] + height : ma.min(y - prop['chart.variant.threed.offsety'] + height, ca.height - this.gutterBottom)
);
co.lineTo(x + hmargin + barWidth, y + height);
co.closePath();
co.stroke();
co.fill();
// Draw the darker top section
co.beginPath();
co.fillStyle = 'rgba(255,255,255,0.3)';
co.moveTo(x + hmargin, y);
co.lineTo(x + hmargin + prop['chart.variant.threed.offsetx'], y - prop['chart.variant.threed.offsety']);
co.lineTo(x + hmargin + prop['chart.variant.threed.offsetx'] + barWidth, y - prop['chart.variant.threed.offsety']);
co.lineTo(x + hmargin + barWidth, y);
co.lineTo(x + hmargin, y);
co.closePath();
co.stroke();
co.fill();
// Draw the darker right side section
co.beginPath();
co.fillStyle = 'rgba(0,0,0,0.4)';
// TL
co.moveTo(x + hmargin + barWidth, y);
// TR
co.lineTo(
x + hmargin + barWidth + prop['chart.variant.threed.offsetx'],
this.data[i] < 0 && xaxispos === 'bottom' ? (ca.height - this.gutterBottom) : (this.data[i] < 0 && (y - prop['chart.variant.threed.offsety']) < (this.gutterTop + this.halfgrapharea) ? (this.gutterTop + this.halfgrapharea) : y - prop['chart.variant.threed.offsety'])
);
// BR
co.lineTo(
x + hmargin + barWidth + prop['chart.variant.threed.offsetx'],
this.data[i] < 0 && (y - prop['chart.variant.threed.offsety'] + height) < (this.gutterTop + this.halfgrapharea)
? (this.gutterTop + this.halfgrapharea)
: this.data[i] > 0 ? y - prop['chart.variant.threed.offsety'] + height : ma.min(y - prop['chart.variant.threed.offsety'] + height, ca.height - this.gutterBottom)
);
// BL
co.lineTo(x + hmargin + barWidth, y + height);
co.lineTo(x + hmargin + barWidth, y);
co.closePath();
co.stroke();
co.fill();
co.strokeStyle = prevStrokeStyle;
co.fillStyle = prevFillStyle;
// Glass variant
} else if (variant == 'glass') {
var grad = co.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)');
co.beginPath();
co.fillStyle = grad;
co.fillRect(x + hmargin + 2,y + (this.data[i] > 0 ? 2 : 0),(barWidth / 2) - 2,height - 2);
co.fill();
}
// Dot chart
} else if (variant == 'dot') {
co.beginPath();
co.moveTo(x + (width / 2), y);
co.lineTo(x + (width / 2), y + height);
co.stroke();
co.beginPath();
co.fillStyle = this.properties['chart.colors'][i];
co.arc(x + (width / 2), y + (this.data[i] > 0 ? 0 : height), 2, 0, 6.28, 0);
// Set the colour for the dots
co.fillStyle = prop['chart.colors'][0];
/**
* Sequential colors
*/
if (prop['chart.colors.sequential']) {
co.fillStyle = colors[i];
}
co.stroke();
co.fill();
// Unknown variant type
} else {
alert('[BAR] Warning! Unknown chart.variant: ' + variant);
}
this.coords.push([x + hmargin, y, width - (2 * hmargin), height]);
if (typeof this.coords2[i] == 'undefined') {
this.coords2[i] = [];
}
this.coords2[i].push([x + hmargin, y, width - (2 * hmargin), height]);
/**
* Stacked bar
*/
} else if (this.data[i] && typeof(this.data[i]) == 'object' && prop['chart.grouping'] == 'stacked') {
if (this.scale2.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) {
console.log('[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
*/
co.strokeStyle = strokeStyle
co.fillStyle = colors[j];
if (prop['chart.colors.reverse']) {
co.fillStyle = colors[this.data[i].length - j - 1];
}
if (prop['chart.colors.sequential'] && colors[sequentialColorIndex]) {
co.fillStyle = colors[sequentialColorIndex++];
} else if (prop['chart.colors.sequential']) {
co.fillStyle = colors[sequentialColorIndex - 1];
}
var height = (dataset[j] / this.scale2.max) * (ca.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.scale2.max) * (ca.height - hmargin - this.gutterTop - this.gutterBottom);
/**
* Store the coords for tooltips
*/
this.coords.push([x + hmargin, y, width - (2 * hmargin), height]);
if (typeof this.coords2[i] == 'undefined') {
this.coords2[i] = [];
}
this.coords2[i].push([x + hmargin, y, width - (2 * hmargin), height]);
// MSIE shadow
if (RGraph.ISOLD && shadow) {
this.DrawIEShadow([x + hmargin, y, width - (2 * hmargin), height + 1]);
}
if (height > 0) {
co.strokeRect(x + hmargin, y, width - (2 * hmargin), height);
co.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, co.fillStyle]);
}
/**
* Stacked 3D effect
*/
if (variant == '3d') {
var prevFillStyle = co.fillStyle;
var prevStrokeStyle = co.strokeStyle;
// Draw the top side
if (j == 0) {
co.beginPath();
co.moveTo(startX + hmargin, y);
co.lineTo(startX + prop['chart.variant.threed.offsetx'] + hmargin, y - prop['chart.variant.threed.offsety']);
co.lineTo(startX + prop['chart.variant.threed.offsetx'] + barWidth + hmargin, y - prop['chart.variant.threed.offsety']);
co.lineTo(startX + barWidth + hmargin, y);
co.closePath();
co.fill();
co.stroke();
}
// Draw the side section
co.beginPath();
co.moveTo(startX + barWidth + hmargin, y);
co.lineTo(startX + barWidth + hmargin + prop['chart.variant.threed.offsetx'], y - prop['chart.variant.threed.offsety']);
co.lineTo(startX + barWidth + hmargin + prop['chart.variant.threed.offsetx'], y - prop['chart.variant.threed.offsety'] + height);
co.lineTo(startX + barWidth + hmargin , y + height);
co.closePath();
co.fill();
co.stroke();
// Draw the darker top side
if (j == 0) {
co.fillStyle = 'rgba(255,255,255,0.3)';
co.beginPath();
co.moveTo(startX + hmargin, y);
co.lineTo(startX + prop['chart.variant.threed.offsetx'] + hmargin, y - prop['chart.variant.threed.offsety']);
co.lineTo(startX + prop['chart.variant.threed.offsetx'] + barWidth + hmargin, y - prop['chart.variant.threed.offsety']);
co.lineTo(startX + barWidth + hmargin, y);
co.closePath();
co.fill();
co.stroke();
}
// Draw the darker side section
co.fillStyle = 'rgba(0,0,0,0.4)';
co.beginPath();
co.moveTo(startX + barWidth + hmargin, y);
co.lineTo(startX + barWidth + hmargin + prop['chart.variant.threed.offsetx'], y - prop['chart.variant.threed.offsety']);
co.lineTo(startX + barWidth + hmargin + prop['chart.variant.threed.offsetx'], y - prop['chart.variant.threed.offsety'] + height);
co.lineTo(startX + barWidth + hmargin , y + height);
co.closePath();
co.fill();
co.stroke();
co.strokeStyle = prevStrokeStyle;
co.fillStyle = prevFillStyle;
}
y += height;
}
/**
* 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) {
co.strokeStyle = strokeStyle;
co.fillStyle = redrawCoords[k][4];
co.strokeRect(redrawCoords[k][0], redrawCoords[k][1], redrawCoords[k][2], redrawCoords[k][3]);
co.fillRect(redrawCoords[k][0], redrawCoords[k][1], redrawCoords[k][2], redrawCoords[k][3]);
co.stroke();
co.fill();
}
// Reset the redraw coords to be empty
redrawCoords = [];
}
/**
* Grouped bar
*/
} else if (this.data[i] && typeof(this.data[i]) == 'object' && prop['chart.grouping'] == 'grouped') {
var redrawCoords = [];
co.lineWidth = prop['chart.linewidth'];
for (j=0; j<this.data[i].length; ++j) {
// Set the fill and stroke colors
co.strokeStyle = strokeStyle;
co.fillStyle = colors[j];
/**
* Sequential colors
*/
if (prop['chart.colors.sequential'] && colors[sequentialColorIndex]) {
co.fillStyle = colors[sequentialColorIndex++];
} else if (prop['chart.colors.sequential']) {
co.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.scale2.min : (-1 * this.scale2.min) )) / (this.scale2.max - this.scale2.min) ) * (ca.height - this.gutterTop - this.gutterBottom );
var groupedMargin = prop['chart.hmargin.grouped'];
var startX = x + hmargin + (j * individualBarWidth);
/**
* Check for a negative bar width
*/
if (individualBarWidth < 0) {
console.log('[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;
}
/**
* 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 = ca.height - this.gutterBottom - height;
var height = Math.abs(height);
}
/**
* Draw MSIE shadow
*/
if (RGraph.ISOLD && shadow) {
this.DrawIEShadow([startX, startY, individualBarWidth, height]);
}
co.strokeRect(startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height);
co.fillRect(startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height);
y += height;
/**
* Grouped 3D effect
*/
if (variant == '3d') {
var prevFillStyle = co.fillStyle;
var prevStrokeStyle = co.strokeStyle;
var hmarginGrouped = prop['chart.hmargin.grouped'];
// Draw the top side
if (this.data[i][j] >= 0) {
co.beginPath();
co.moveTo(startX + hmarginGrouped, startY);
co.lineTo(startX + hmarginGrouped + prop['chart.variant.threed.offsetx'], startY - prop['chart.variant.threed.offsety']);
co.lineTo(startX + prop['chart.variant.threed.offsetx'] + individualBarWidth - hmarginGrouped, startY - prop['chart.variant.threed.offsety']);
co.lineTo(startX + individualBarWidth - hmarginGrouped, startY);
co.closePath();
co.fill();
co.stroke();
}
// Draw the side section
co.beginPath();
co.moveTo(startX + individualBarWidth - hmarginGrouped - 1, startY);
co.lineTo(
startX + individualBarWidth - hmarginGrouped + prop['chart.variant.threed.offsetx'],
this.data[i][j] < 0 && (startY - prop['chart.variant.threed.offsety']) < (this.gutterTop + this.halfgrapharea) ? (this.gutterTop + this.halfgrapharea) : (startY - prop['chart.variant.threed.offsety'])
);
co.lineTo(
startX + individualBarWidth - hmarginGrouped + prop['chart.variant.threed.offsetx'],
this.data[i][j] < 0 && (startY + height - prop['chart.variant.threed.offsety']) < (this.gutterTop + this.halfgrapharea) ? (this.gutterTop + this.halfgrapharea) : (startY + height - prop['chart.variant.threed.offsety'])
);
co.lineTo(startX + individualBarWidth - hmarginGrouped - 1, startY + height);
co.closePath();
co.fill();
co.stroke();
// Draw the lighter top side - but only if the current value is positive
if (this.data[i][j] >= 0) {
co.fillStyle = 'rgba(255,255,255,0.3)';
co.beginPath();
// BL
co.moveTo(startX + hmarginGrouped, startY);
// BR
co.lineTo(startX + hmarginGrouped + prop['chart.variant.threed.offsetx'], startY - prop['chart.variant.threed.offsety']);
// TR
co.lineTo(startX + prop['chart.variant.threed.offsetx'] + individualBarWidth - hmarginGrouped, startY - prop['chart.variant.threed.offsety']);
// TL
co.lineTo(startX + individualBarWidth - hmarginGrouped, startY);
co.closePath();
co.fill();
co.stroke();
}
// Draw the darker side section
co.fillStyle = 'rgba(0,0,0,0.4)';
co.beginPath();
// BL corner
co.moveTo(startX + individualBarWidth - hmarginGrouped, startY);
// BR corner
co.lineTo(startX + individualBarWidth + prop['chart.variant.threed.offsetx'] - hmarginGrouped, this.data[i][j] < 0 && (startY - 5) < (this.gutterTop + this.halfgrapharea) ? (this.gutterTop + this.halfgrapharea) : (startY - prop['chart.variant.threed.offsety']));
// TR corner
co.lineTo(startX + individualBarWidth + prop['chart.variant.threed.offsetx'] - hmarginGrouped, this.data[i][j] < 0 && (startY + height - 5) < (this.gutterTop + this.halfgrapharea) ? (this.gutterTop + this.halfgrapharea) : (startY + height - prop['chart.variant.threed.offsety']));
// TL corner
co.lineTo(startX + individualBarWidth - hmarginGrouped, startY + height);
co.closePath();
co.fill();
co.stroke();
co.strokeStyle = prevStrokeStyle;
co.fillStyle = prevFillStyle;
}
if (height < 0) {
height = Math.abs(height);
startY = startY - height;
}
this.coords.push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height]);
if (typeof this.coords2[i] == 'undefined') {
this.coords2[i] = [];
}
this.coords2[i].push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height]);
// Facilitate shadows going to the left
if (prop['chart.shadow']) {
redrawCoords.push([startX + groupedMargin, startY, individualBarWidth - (2 * groupedMargin), height, co.fillStyle]);
}
}
/**
* Redraw the bar if shadows are going to the left
*/
if (redrawCoords.length) {
RGraph.NoShadow(this);
co.lineWidth = prop['chart.linewidth'];
co.beginPath();
for (var j=0; j<redrawCoords.length; ++j) {
co.fillStyle = redrawCoords[j][4];
co.strokeStyle = prop['chart.strokecolor'];
co.fillRect(redrawCoords[j][0], redrawCoords[j][1], redrawCoords[j][2], redrawCoords[j][3]);
co.strokeRect(redrawCoords[j][0], redrawCoords[j][1], redrawCoords[j][2], redrawCoords[j][3]);
}
co.fill();
co.stroke();
redrawCoords = [];
}
} else {
this.coords.push([]);
}
co.closePath();
}
/**
* Turn off any shadow
*/
RGraph.NoShadow(this);
};
/**
* Draws the labels for the graph
*/
this.drawLabels =
this.DrawLabels = function ()
{
var context = co;
var text_angle = prop['chart.text.angle']
text_size = prop['chart.text.size']
labels = prop['chart.labels']
// Draw the Y axis labels:
if (prop['chart.ylabels']) {
if (prop['chart.xaxispos'] == 'top') this.Drawlabels_top();
if (prop['chart.xaxispos'] == 'center') this.Drawlabels_center();
if (prop['chart.xaxispos'] == 'bottom') this.Drawlabels_bottom();
}
/**
* The X axis labels
*/
if (typeof(labels) == 'object' && labels) {
var yOffset = Number(prop['chart.xlabels.offset']),
bold = prop['chart.labels.bold']
/**
* Text angle
*/
if (prop['chart.text.angle'] != 0) {
var valign = 'center';
var halign = 'right';
var angle = 0 - prop['chart.text.angle'];
} else {
var valign = 'top';
var halign = 'center';
var angle = 0;
}
// Draw the X axis labels
co.fillStyle = prop['chart.labels.color'] || prop['chart.text.color'];
// How wide is each bar
var barWidth = (ca.width - this.gutterRight - this.gutterLeft) / labels.length;
// Reset the xTickGap
xTickGap = (ca.width - this.gutterRight - this.gutterLeft) / labels.length
// Draw the X tickmarks
var i=0;
var font = prop['chart.text.font'];
for (x=this.gutterLeft + (xTickGap / 2); x<=ca.width - this.gutterRight; x+=xTickGap) {
RGraph.text2(this, {
'font': font,
'size': text_size,
'x': x,
'y': prop['chart.xaxispos'] == 'top' ? this.gutterTop - yOffset - 5: (ca.height - this.gutterBottom) + yOffset + 3,
'bold': bold,
'text': String(labels[i++]),
'valign': prop['chart.xaxispos'] == 'top' ? 'bottom' : valign,
'halign': halign,
'tag':'label',
'marker':false,
'angle':angle,
'tag': 'labels'
});
}
}
/**
* Draw above labels
*/
this.drawAboveLabels();
};
/**
* Draws the X axis at the top
*/
this.drawlabels_top =
this.Drawlabels_top = function ()
{
var ca = this.canvas;
var co = this.context;
var prop = this.properties;
co.beginPath();
co.fillStyle = prop['chart.text.color'];
co.strokeStyle = 'black';
if (prop['chart.xaxispos'] == 'top') {
var context = co;
var text_size = prop['chart.text.size'];
var units_pre = prop['chart.units.pre'];
var units_post = prop['chart.units.post'];
var align = prop['chart.yaxispos'] == 'left' ? 'right' : 'left';
var font = prop['chart.text.font'];
var numYLabels = prop['chart.ylabels.count'];
var ymin = prop['chart.ymin'];
if (prop['chart.ylabels.inside'] == true) {
var xpos = prop['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : ca.width - this.gutterRight - 5;
var align = prop['chart.yaxispos'] == 'left' ? 'left' : 'right';
var boxed = true;
} else {
var xpos = prop['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : ca.width - this.gutterRight + 5;
var boxed = false;
}
/**
* Draw specific Y labels here so that the local variables can be reused
*/
if (typeof(prop['chart.ylabels.specific']) == 'object' && prop['chart.ylabels.specific']) {
var labels = RGraph.array_reverse(prop['chart.ylabels.specific']);
var grapharea = ca.height - this.gutterTop - this.gutterBottom;
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + (grapharea * (i / labels.length)) + (grapharea / labels.length);
RGraph.Text2(this, {'font': font,
'size': text_size,
'x': xpos,
'y': y,
'text': String(labels[i]),
'valign': 'center',
'halign': align,
'bordered':boxed,
'tag': 'scale'
});
}
return;
}
/**
* Draw the scale
*/
var labels = this.scale2.labels;
for (var i=0; i<labels.length; ++i) {
RGraph.Text2(this, {'font': font,
'size':text_size,
'x':xpos,
'y':this.gutterTop + ((this.grapharea / labels.length) * (i + 1)),
'text': '-' + labels[i],
'valign': 'center',
'halign': align,
'bordered': boxed,
'tag':'scale'});
}
/**
* Show the minimum value if its not zero
*/
if (prop['chart.ymin'] != 0 || prop['chart.noxaxis'] || prop['chart.scale.zerostart']) {
RGraph.Text2(this, {'font': font,
'size': text_size,
'x': xpos,
'y': this.gutterTop,
'text': (this.scale2.min != 0 ? '-' : '') + RGraph.number_format(this,(this.scale2.min.toFixed((prop['chart.scale.decimals']))), units_pre, units_post),
'valign': 'center',
'halign': align,
'bordered': boxed,
'tag': 'scale'});
}
}
co.fill();
};
/**
* Draws the X axis in the middle
*/
this.drawlabels_center =
this.Drawlabels_center = function ()
{
var ca = this.canvas;
var co = this.context;
var prop = this.properties;
var font = prop['chart.text.font'];
var numYLabels = prop['chart.ylabels.count'];
co.fillStyle = prop['chart.text.color'];
if (prop['chart.xaxispos'] == 'center') {
/**
* Draw the top labels
*/
var text_size = prop['chart.text.size'];
var units_pre = prop['chart.units.pre'];
var units_post = prop['chart.units.post'];
var context = co;
var align = '';
var xpos = 0;
var boxed = false;
var ymin = prop['chart.ymin'];
co.fillStyle = prop['chart.text.color'];
co.strokeStyle = 'black';
if (prop['chart.ylabels.inside'] == true) {
var xpos = prop['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : ca.width - this.gutterRight - 5;
var align = prop['chart.yaxispos'] == 'left' ? 'left' : 'right';
var boxed = true;
} else {
var xpos = prop['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : ca.width - this.gutterRight + 5;
var align = prop['chart.yaxispos'] == 'left' ? 'right' : 'left';
var boxed = false;
}
/**
* Draw specific Y labels here so that the local variables can be reused
*/
if (typeof(prop['chart.ylabels.specific']) == 'object' && prop['chart.ylabels.specific']) {
var labels = prop['chart.ylabels.specific'];
var grapharea = ca.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 - 1)) * i;
RGraph.Text2(this, {'font':font,
'size':text_size,
'x':xpos,
'y':y,
'text':String(labels[i]),
'valign':'center',
'halign':align,
'bordered':boxed,
'tag': 'scale'
});
}
// Draw the bottom halves labels
for (var i=labels.length-1; i>=1; --i) {
var y = this.gutterTop + (grapharea * (i / ((labels.length - 1) * 2) )) + (grapharea / 2);
RG.Text2(this, {'font':font,
'size':text_size,
'x':xpos,
'y':y,
'text':String(labels[labels.length - i - 1]),
'valign':'center',
'halign':align,
'bordered':boxed,
'tag': 'scale'
});
}
return;
}
/**
* Draw the top halfs labels
*/
for (var i=0; i<this.scale2.labels.length; ++i) {
var y = this.gutterTop + this.halfgrapharea - ((this.halfgrapharea / numYLabels) * (i + 1));
var text = this.scale2.labels[i];
RG.Text2(this, {'font':font, 'size':text_size, 'x':xpos, 'y':y, 'text': text, 'valign':'center', 'halign': align, 'bordered': boxed, 'tag':'scale'});
}
/**
* Draw the bottom halfs labels
*/
for (var i=(this.scale2.labels.length - 1); i>=0; --i) {
var y = this.gutterTop + ((this.halfgrapharea / numYLabels) * (i + 1)) + this.halfgrapharea;
var text = this.scale2.labels[i];
RG.Text2(this, {'font':font, 'size':text_size,'x':xpos,'y':y,'text': '-' + text,'valign':'center','halign': align,'bordered': boxed,'tag':'scale'});
}
/**
* Show the minimum value if its not zero
*/
if (this.scale2.min != 0 || prop['chart.scale.zerostart']) {
RG.Text2(this, {'font':font,'size':text_size, 'x':xpos, 'y':this.gutterTop + this.halfgrapharea,'text': RGraph.number_format(this,(this.scale2.min.toFixed((prop['chart.scale.decimals']))), units_pre, units_post),'valign':'center', 'valign':'center','halign': align, 'bordered': boxed, 'tag':'scale'});
}
}
};
/**
* Draws the X axdis at the bottom (the default)
*/
this.drawlabels_bottom =
this.Drawlabels_bottom = function ()
{
var text_size = prop['chart.text.size'],
units_pre = prop['chart.units.pre'],
units_post = prop['chart.units.post'],
context = this.context,
align = prop['chart.yaxispos'] == 'left' ? 'right' : 'left',
font = prop['chart.text.font'],
numYLabels = prop['chart.ylabels.count'],
ymin = prop['chart.ymin']
co.beginPath();
co.fillStyle = prop['chart.text.color'];
co.strokeStyle = 'black';
if (prop['chart.ylabels.inside'] == true) {
var xpos = prop['chart.yaxispos'] == 'left' ? this.gutterLeft + 5 : ca.width - this.gutterRight - 5;
var align = prop['chart.yaxispos'] == 'left' ? 'left' : 'right';
var boxed = true;
} else {
var xpos = prop['chart.yaxispos'] == 'left' ? this.gutterLeft - 5 : ca.width - this.gutterRight + 5;
var boxed = false;
}
/**
* Draw specific Y labels here so that the local variables can be reused
*/
if (prop['chart.ylabels.specific'] && typeof(prop['chart.ylabels.specific']) == 'object') {
var labels = prop['chart.ylabels.specific'];
var grapharea = ca.height - this.gutterTop - this.gutterBottom;
for (var i=0; i<labels.length; ++i) {
var y = this.gutterTop + (grapharea * (i / (labels.length - 1)));
RGraph.Text2(this, {'font':font,
'size':text_size,
'x':xpos,
'y':y,
'text': labels[i],
'valign':'center',
'halign': align,
'bordered': boxed,
'tag':'scale'
});
}
return;
}
var gutterTop = this.gutterTop;
var halfTextHeight = this.halfTextHeight;
var scale = this.scale;
for (var i=0; i<numYLabels; ++i) {
var text = this.scale2.labels[i];
RGraph.Text2(this, {'font':font,
'size':text_size,
'x':xpos,
'y':this.gutterTop + this.grapharea - ((this.grapharea / numYLabels) * (i+1)),
'text': text,
'valign':'center',
'halign': align,
'bordered': boxed,
'tag':'scale'});
}
/**
* Show the minimum value if its not zero
*/
if (prop['chart.ymin'] != 0 || prop['chart.noxaxis'] || prop['chart.scale.zerostart']) {
RG.Text2(this, {'font':font,
'size':text_size,
'x':xpos,
'y':ca.height - this.gutterBottom,
'text': RG.number_format(this,(this.scale2.min.toFixed((prop['chart.scale.decimals']))), units_pre, units_post),
'valign':'center',
'halign': align,
'bordered': boxed,
'tag':'scale'});
}
co.fill();
};
/**
* This function is used by MSIE only to manually draw the shadow
*
* @param array coords The coords for the bar
*/
this.drawIEShadow =
this.DrawIEShadow = function (coords)
{
var co = this.context;
var ca = this.canvas;
var prop = this.properties;
var prevFillStyle = co.fillStyle;
var offsetx = prop['chart.shadow.offsetx'];
var offsety = prop['chart.shadow.offsety'];
co.lineWidth = prop['chart.linewidth'];
co.fillStyle = prop['chart.shadow.color'];
co.beginPath();
// Draw shadow here
co.fillRect(coords[0] + offsetx, coords[1] + offsety, coords[2], coords[3]);
co.fill();
// Change the fillstyle back to what it was
co.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"
*/
this.getShape =
this.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 = RG.getMouseXY(e),
mouseX = mouseXY[0],
mouseY = mouseXY[1],
canvas = obj.canvas,
context = obj.context,
coords = obj.coords
for (var i=0,len=coords.length; i<len; i+=1) {
if (obj.coords[i].length == 0) {
continue;
}
var left = coords[i][0],
top = coords[i][1],
width = coords[i][2],
height = coords[i][3],
prop = obj.properties
// Old way of testing
//if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height)) {
// Recreate the path/rectangle so that it can be tested
// ** DO NOT STROKE OR FILL IT **
pa(co,['b','r',left,top,width,height]);
if (co.isPointInPath(mouseX, mouseY)) {
if (prop['chart.tooltips']) {
var tooltip = RG.parseTooltipText ? RG.parseTooltipText(prop['chart.tooltips'], i) : prop['chart.tooltips'][i];
}
// Work out the dataset
var dataset = 0,
idx = i
while (idx >= (typeof obj.data[dataset] === 'object' && obj.data[dataset] ? obj.data[dataset].length : 1)) {
if (typeof obj.data[dataset] === 'number') {
idx -= 1;
} else if (obj.data[dataset]) { // Accounts for null being an object
idx -= obj.data[dataset].length;
} else {
idx -= 1;
}
dataset++;
}
if (typeof(obj.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"
*/
this.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,len=obj.coords.length; i<len; i++) {
if (obj.coords[i].length == 0) {
continue;
}
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];
var prop = obj.properties;
if (mouseX >= left && mouseX <= (left + width)) {
if (prop['chart.tooltips']) {
var tooltip = RGraph.parseTooltipText ? RGraph.parseTooltipText(prop['chart.tooltips'], i) : prop['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
*/
this.getValue = function (arg)
{
var co = this.context;
var ca = this.canvas;
var prop = this.properties;
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 < prop['chart.gutter.top']
|| mouseY > (ca.height - prop['chart.gutter.bottom'])
|| mouseX < prop['chart.gutter.left']
|| mouseX > (ca.width - prop['chart.gutter.right'])
) {
return null;
}
if (prop['chart.xaxispos'] == 'center') {
var value = (((this.grapharea / 2) - (mouseY - prop['chart.gutter.top'])) / this.grapharea) * (this.scale2.max - this.scale2.min)
value *= 2;
if (value >= 0) {
value += this.scale2.min;
} else {
value -= this.scale2.min;
}
} else if (prop['chart.xaxispos'] == 'top') {
var value = ((this.grapharea - (mouseY - prop['chart.gutter.top'])) / this.grapharea) * (this.scale2.max - this.scale2.min)
value = this.scale2.max - value;
value = Math.abs(value) * -1;
} else {
var value = ((this.grapharea - (mouseY - prop['chart.gutter.top'])) / this.grapharea) * (this.scale2.max - this.scale2.min)
value += this.scale2.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
*/
this.getYCoord = function (value)
{
if (value > this.scale2.max) {
return null;
}
var co = this.context;
var ca = this.canvas;
var prop = this.properties;
var y;
var xaxispos = prop['chart.xaxispos'];
if (xaxispos == 'top') {
// Account for negative numbers
if (value < 0) {
value = Math.abs(value);
}
y = ((value - this.scale2.min) / (this.scale2.max - this.scale2.min)) * this.grapharea;
y = y + this.gutterTop
} else if (xaxispos == 'center') {
y = ((value - this.scale2.min) / (this.scale2.max - this.scale2.min)) * (this.grapharea / 2);
y = (this.grapharea / 2) - y;
y += this.gutterTop;
} else {
if (value < this.scale2.min) {
value = this.scale2.min;
}
y = ((value - this.scale2.min) / (this.scale2.max - this.scale2.min)) * this.grapharea;
y = ca.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
*/
this.highlight =
this.Highlight = function (shape)
{
// Add the new highlight
RGraph.Highlight.Rect(this, shape);
};
/**
* The getObjectByXY() worker method
*/
this.getObjectByXY = function (e)
{
var mouseXY = RG.getMouseXY(e);
// Adjust the mouse Y coordinate for when the bar chart is
// a 3D variant
if (prop['chart.variant'] === '3d') {
var adjustment = prop['chart.variant.threed.angle'] * mouseXY[0];
mouseXY[1] -= adjustment;
}
if (
mouseXY[0] >= prop['chart.gutter.left']
&& mouseXY[0] <= (ca.width - prop['chart.gutter.right'])
&& mouseXY[1] >= prop['chart.gutter.top']
&& mouseXY[1] <= (ca.height - prop['chart.gutter.bottom'])
) {
return this;
}
};
/**
* This method handles the adjusting calculation for when the mouse is moved
*
* @param object e The event object
*/
this.adjusting_mousemove =
this.Adjusting_mousemove = function (e)
{
/**
* Handle adjusting for the Bar
*/
if (prop['chart.adjustable'] && RG.Registry.Get('chart.adjusting') && RG.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));
var shape = this.getShapeByX(e);
if (shape) {
RG.Registry.Set('chart.adjusting.shape', shape);
if (this.stackedOrGrouped && prop['chart.grouping'] == 'grouped') {
var indexes = RG.sequentialIndexToGrouped(shape['index'], this.data);
if (typeof this.data[indexes[0]] == 'number') {
this.data[indexes[0]] = Number(value);
} else if (!RG.is_null(this.data[indexes[0]])) {
this.data[indexes[0]][indexes[1]] = Number(value);
}
} else if (typeof this.data[shape['index']] == 'number') {
this.data[shape['index']] = Number(value);
}
RG.redrawCanvas(e.target);
RG.fireCustomEvent(this, 'onadjust');
}
}
};
/**
* This function positions a tooltip when it is displayed
*
* @param obj object The chart object
* @param int x The X coordinate specified for the tooltip
* @param int y The Y coordinate specified for the tooltip
* @param objec tooltip The tooltips DIV element
*/
this.positionTooltip = function (obj, x, y, tooltip, idx)
{
var prop = obj.properties,
coordX = obj.coords[tooltip.__index__][0],
coordY = obj.coords[tooltip.__index__][1],
coordW = obj.coords[tooltip.__index__][2],
coordH = obj.coords[tooltip.__index__][3],
mouseXY = RG.getMouseXY(window.event),
canvasXY = RG.getCanvasXY(obj.canvas),
gutterLeft = prop['chart.gutter.left'],
gutterTop = prop['chart.gutter.top'],
width = tooltip.offsetWidth,
height = tooltip.offsetHeight,
value = obj.data_arr[tooltip.__index__]
// If the chart is a 3D version the tooltip Y position needs this
// adjustment
if (prop['chart.variant'] === '3d' && mouseXY) {
var adjustment = (prop['chart.variant.threed.angle'] * mouseXY[0]);
}
// Set the top position
tooltip.style.left = 0;
tooltip.style.top = canvasXY[1] + coordY - height - 7 + (adjustment || 0) + '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 + (adjustment || 0)+ '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)) > doc.body.offsetWidth) {
tooltip.style.left = canvasXY[0] + coordX - (width * 0.9) + (coordW / 2) + 'px';
img.style.left = ((width * 0.9) - 8.5) + 'px';
// Default positioning - CENTERED
} else {
tooltip.style.left = (canvasXY[0] + coordX + (coordW / 2) - (width * 0.5)) + 'px';
img.style.left = ((width * 0.5) - 8.5) + 'px';
}
};
/**
* This allows for easy specification of gradients
*/
this.parseColors = function ()
{
// Save the original colors so that they can be restored when the canvas is reset
if (this.original_colors.length === 0) {
this.original_colors['chart.colors'] = RGraph.array_clone(prop['chart.colors']);
this.original_colors['chart.key.colors'] = RGraph.array_clone(prop['chart.key.colors']);
this.original_colors['chart.crosshairs.color'] = prop['chart.crosshairs.color'];
this.original_colors['chart.highlight.stroke'] = prop['chart.highlight.stroke'];
this.original_colors['chart.highlight.fill'] = prop['chart.highlight.fill'];
this.original_colors['chart.text.color'] = prop['chart.text.color'];
this.original_colors['chart.background.barcolor1'] = prop['chart.background.barcolor1'];
this.original_colors['chart.background.barcolor2'] = prop['chart.background.barcolor2'];
this.original_colors['chart.background.grid.color'] = prop['chart.background.grid.color'];
this.original_colors['chart.background.color'] = prop['chart.background.color'];
this.original_colors['chart.strokecolor'] = prop['chart.strokecolor'];
this.original_colors['chart.axis.color'] = prop['chart.axis.color'];
}
// chart.colors
var colors = prop['chart.colors'];
if (colors) {
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForGradient(colors[i]);
}
}
// chart.key.colors
var colors = prop['chart.key.colors'];
if (colors) {
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForGradient(colors[i]);
}
}
prop['chart.crosshairs.color'] = this.parseSingleColorForGradient(prop['chart.crosshairs.color']);
prop['chart.highlight.stroke'] = this.parseSingleColorForGradient(prop['chart.highlight.stroke']);
prop['chart.highlight.fill'] = this.parseSingleColorForGradient(prop['chart.highlight.fill']);
prop['chart.text.color'] = this.parseSingleColorForGradient(prop['chart.text.color']);
prop['chart.background.barcolor1'] = this.parseSingleColorForGradient(prop['chart.background.barcolor1']);
prop['chart.background.barcolor2'] = this.parseSingleColorForGradient(prop['chart.background.barcolor2']);
prop['chart.background.grid.color'] = this.parseSingleColorForGradient(prop['chart.background.grid.color']);
prop['chart.background.color'] = this.parseSingleColorForGradient(prop['chart.background.color']);
prop['chart.strokecolor'] = this.parseSingleColorForGradient(prop['chart.strokecolor']);
prop['chart.axis.color'] = this.parseSingleColorForGradient(prop['chart.axis.color']);
};
/**
* Use this function to reset the object to the post-constructor state. Eg reset colors if
* need be etc
*/
this.reset = function ()
{
};
/**
* This parses a single color value
*/
this.parseSingleColorForGradient = function (color)
{
if (!color || typeof(color) != 'string') {
return color;
}
if (color.match(/^gradient\((.*)\)$/i)) {
var parts = RegExp.$1.split(':');
// Create the gradient
var grad = co.createLinearGradient(0,ca.height - prop['chart.gutter.bottom'], 0, prop['chart.gutter.top']);
var diff = 1 / (parts.length - 1);
grad.addColorStop(0, RG.trim(parts[0]));
for (var j=1,len=parts.length; j<len; ++j) {
grad.addColorStop(j * diff, RGraph.trim(parts[j]));
}
}
return grad ? grad : color;
};
this.drawBevel =
this.DrawBevel = function ()
{
var coords = this.coords;
var coords2 = this.coords2;
var prop = this.properties;
var co = this.context;
var ca = this.canvas;
if (prop['chart.grouping'] == 'stacked') {
for (var i=0; i<coords2.length; ++i) {
if (coords2[i] && coords2[i][0] && coords2[i][0][0]) {
var x = coords2[i][0][0];
var y = coords2[i][0][1];
var w = coords2[i][0][2];
var arr = [];
for (var j=0; j<coords2[i].length; ++j) {
arr.push(coords2[i][j][3]);
}
var h = RGraph.array_sum(arr);
co.save();
co.strokeStyle = 'black';
// Clip to the rect
co.beginPath();
co.rect(x, y, w, h);
co.clip();
// Add the shadow
co.shadowColor = 'black';
co.shadowOffsetX = 0;
co.shadowOffsetY = 0;
co.shadowBlur = 20;
co.beginPath();
co.rect(x - 3, y - 3, w + 6, h + 100);
co.lineWidth = 5;
co.stroke();
co.restore();
}
}
} else {
for (var i=0; i<coords.length; ++i) {
if (coords[i]) {
var x = coords[i][0];
var y = coords[i][1];
var w = coords[i][2];
var h = coords[i][3];
var xaxispos = prop['chart.xaxispos'];
var xaxis_ycoord = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;
co.save();
co.strokeStyle = 'black';
// Clip to the rect
co.beginPath();
co.rect(x, y, w, h);
co.clip();
// Add the shadow
co.shadowColor = 'black';
co.shadowOffsetX = 0;
co.shadowOffsetY = 0;
co.shadowBlur = 20;
if (xaxispos == 'top' || (xaxispos == 'center' && (y + h) > xaxis_ycoord)) {
y = y - 100;
h = h + 100;
} else {
y = y;
h = h + 100;
}
co.beginPath();
co.rect(x - 3, y - 3, w + 6, h + 6);
co.lineWidth = 5;
co.stroke();
co.restore();
}
}
}
};
/**
* This function handles highlighting an entire data-series for the interactive
* key
*
* @param int index The index of the data series to be highlighted
*/
this.interactiveKeyHighlight = function (index)
{
this.coords2.forEach(function (value, idx, arr)
{
if (typeof value[index] == 'object' && value[index]) {
var x = value[index][0]
var y = value[index][1]
var w = value[index][2]
var h = value[index][3]
co.fillStyle = prop['chart.key.interactive.highlight.chart.fill'];
co.strokeStyle = prop['chart.key.interactive.highlight.chart.stroke'];
co.lineWidth = 2;
co.strokeRect(x, y, w, h);
co.fillRect(x, y, w, h);
}
});
};
/**
* Using a function to add events makes it easier to facilitate method chaining
*
* @param string type The type of even to add
* @param function func
*/
this.on = function (type, func)
{
if (type.substr(0,2) !== 'on') {
type = 'on' + type;
}
this[type] = func;
return this;
};
/**
* Draws the above labels
*/
this.drawAboveLabels = function ()
{
var labels = prop['chart.labels.above'],
specific = prop['chart.labels.above.specific'],
color = prop['chart.labels.above.color'],
decimals = prop['chart.labels.above.decimals'],
size = prop['chart.labels.above.size'],
angle = -1 * prop['chart.labels.above.angle'],
unitsPre = prop['chart.labels.above.units.pre'],
unitsPost = prop['chart.labels.above.units.post'],
coords = this.coords,
coords2 = this.coords2,
data = this.data,
ldata = RG.arrayLinearize(this.data),
offset = prop['chart.labels.above.offset'],
text_font = prop['chart.text.font'],
text_size = prop['chart.text.size'],
grouping = prop['chart.grouping']
// Turn off any shadow
RG.noShadow(this);
// Color
co.fillStyle = typeof color === 'string' ? color : prop['chart.text.color'];
// This bit draws the text labels that appear above the bars if requested
if (labels && grouping === 'grouped') {
for (var i=0,len=data.length,sequentialIndex=0; i<len; i+=1) {
// Alignment for regular, positive bars
if (typeof data[i] === 'number' && data[i] >= 0) {
var angle = angle;
var halign = (angle ? 'left' : 'center');
var valign = angle !== 0 ? 'center' : 'bottom';
RG.text2(this, {
'font': text_font,
'size': typeof size === 'number' ? size : text_size - 3,
'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
'y': coords2[i][0][1] - offset,
'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(typeof data[i] === 'object' ? data[i][0] : data[i]).toFixed(decimals), unitsPre, unitsPost),
'halign': halign,
'valign': valign,
'angle': angle,
'marker': false,
'bounding': false,
'tag': 'labels.above'
});
sequentialIndex++;
// Alignment for regular, negative bars
} else if (typeof data[i] === 'number' && data[i] < 0) {
var angle = angle;
var halign = angle ? 'right' : 'center';
var valign = angle !== 0 ? 'center' : 'top';
RG.text2(this, {
'font': text_font,
'size': typeof size === 'number' ? size : text_size - 3,
'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
'y': coords2[i][0][1] + coords2[i][0][3] + offset,
'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(typeof data[i] === 'object' ? data[i][0] : data[i]).toFixed(decimals), unitsPre, unitsPost),
'halign': halign,
'valign': valign,
'angle': angle,
'bounding': false,
'marker': false,
'tag': 'labels.above'
});
sequentialIndex++;
// Alignment for grouped bars
} else if (typeof data[i] === 'object') {
for (var j=0,len2=data[i].length; j<len2; j+=1) {
var angle = angle;
var halign = data[i][j] < 0 ? 'right' : 'left';
halign = angle === 0 ? 'center' : halign;
var valign = data[i][j] < 0 ? 'top' : 'bottom';
valign = angle != 0 ? 'center' : valign;
RG.text2(this, {
'font': text_font,
'size': typeof size === 'number' ? size : text_size - 3,
'x': coords2[i][j][0] + (coords2[i][j][2] / 2),
'y': coords2[i][j][1] + (data[i][j] < 0 ? coords2[i][j][3] + offset: -offset),
'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(data[i][j]).toFixed(decimals), unitsPre, unitsPost),
'halign': halign,
'valign': valign,
'angle': angle,
'bounding': false,
'marker': false,
'tag': 'labels.above'
});
sequentialIndex++;
}
}
}
/**
* STACKED bars
*/
} else if (labels && grouping === 'stacked') {
for (var i=0,len=data.length,sequentialIndex=0; i<len; i+=1) {
if (typeof data[i] === 'object') {
var angle = angle;
var halign = angle != 0 ? 'left' : 'center';
var valign = angle != 0 ? 'center' : 'bottom';
RG.text2(this, {
'font': text_font,
'size': typeof size === 'number' ? size : text_size - 3,
'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
'y': coords2[i][0][1] + (data[i][0] < 0 ? coords2[i][0][3] : 0) - offset,
'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(RG.arraySum(data[i])).toFixed(decimals), unitsPre, unitsPost),
'halign': halign,
'valign': valign,
'angle': angle,
'bounding': false,
'marker': false,
'tag': 'labels.above'
});
sequentialIndex += data[i].length;
/**
* Regular numbers but in a stacked grouping
*/
} else {
var angle = angle;
var halign = angle != 0 ? 'left' : 'center';
var valign = angle != 0 ? 'center' : 'bottom';
RG.text2(this, {
'font': text_font,
'size': typeof size === 'number' ? size : text_size - 3,
'x': coords2[i][0][0] + (coords2[i][0][2] / 2),
'y': coords2[i][0][1] + (data[i][0] < 0 ? coords2[i][0][3] : 0) - offset,
'text': specific ? (specific[sequentialIndex] || '') : RG.numberFormat(this, Number(data[i]).toFixed(decimals), unitsPre, unitsPost),
'halign': halign,
'valign': valign,
'angle': angle,
'bounding': false,
'marker': false,
'tag': 'labels.above'
});
sequentialIndex++;
}
}
}
};
/**
* This function runs once only
*/
this.firstDrawFunc = function ()
{
};
/**
* Bar chart Wave effect This effect defaults to 30 frames - which is
* approximately half a second. This the prior, older implementation
* of the Wave effect. It can be slower due to the many timers set
*
* @param object obj The chart object
*/
this.waveOld = function ()
{
var obj = this;
var opt = arguments[0] ? arguments[0] : {};
opt.frames = opt.frames ? opt.frames : 15;
opt.delay = opt.delay || 50;
var callback = arguments[1] ? arguments[1] : function () {};
var original_data = [];
var frame = [];
var length = obj.data.length;
obj.draw();
//var scale = RGraph.getScale2(obj, {'max':obj.max});
obj.Set('chart.ymax', obj.scale2.max);
RG.clear(obj.canvas);
for (var i=0,len=length; i<len; ++i) {
(function (idx)
{
original_data[idx] = obj.data[idx];
obj.data[idx] = typeof obj.data[idx] === 'object' ? [] : 0;
frame[idx] = typeof obj.data[idx] === 'object' ? [] : 0;
setTimeout(function () {iterator(idx, opt.frames);}, opt.delay * idx)
})(i);
}
return this;
function iterator (idx, frames)
{
if (frame[idx] <= frames) {
// Update the data point
if (typeof obj.data[idx] === 'number') {
obj.data[idx] = (frame[idx] / frames) * original_data[idx]
} else if (typeof obj.data[idx] === 'object') {
for (var k=0,len=original_data[idx].length; k<len; ++k) {
obj.data[idx][k] = (frame[idx] / frames) * original_data[idx][k];
}
}
RG.clear(obj.canvas);
RG.redrawCanvas(obj.canvas);
++frame[idx];
RG.Effects.updateCanvas(function () {iterator(idx, frames);});
} else if (idx === (length - 1) ) {
callback(obj);
}
}
};
/**
* (new) Bar chart Wave effect. This is a rewrite that should be smoother
* because it just uses a single loop and not setTimeout
*
* @param object OPTIONAL An object map of options. You specify 'frames' here to give the number of frames in the effect
* @param function OPTIONAL A function that will be called when the effect is complete
*/
this.wave = function ()
{
var obj = this,
opt = arguments[0] || {};
opt.frames = opt.frames || 60;
opt.startFrames = [];
opt.counters = [];
var framesperbar = opt.frames / 3,
frame = -1,
callback = arguments[1] || function () {},
original = RG.arrayClone(obj.data);
for (var i=0,len=obj.data.length; i<len; i+=1) {
opt.startFrames[i] = ((opt.frames / 2) / (obj.data.length - 1)) * i;
if (typeof obj.data[i] === 'object' && obj.data[i]) {
opt.counters[i] = [];
for (var j=0; j<obj.data[i].length; j++) {
opt.counters[i][j] = 0;
}
} else {
opt.counters[i] = 0;
}
}
/**
* This stops the chart from jumping
*/
obj.draw();
obj.Set('ymax', obj.scale2.max);
RG.clear(obj.canvas);
function iterator ()
{
++frame;
for (var i=0,len=obj.data.length; i<len; i+=1) {
if (frame > opt.startFrames[i]) {
if (typeof obj.data[i] === 'number') {
obj.data[i] = ma.min(
ma.abs(original[i]),
ma.abs(original[i] * ( (opt.counters[i]++) / framesperbar))
);
// Make the number negative if the original was
if (original[i] < 0) {
obj.data[i] *= -1;
}
} else if (!RG.isNull(obj.data[i])) {
for (var j=0,len2=obj.data[i].length; j<len2; j+=1) {
obj.data[i][j] = ma.min(
ma.abs(original[i][j]),
ma.abs(original[i][j] * ( (opt.counters[i][j]++) / framesperbar))
);
// Make the number negative if the original was
if (original[i][j] < 0) {
obj.data[i][j] *= -1;
}
}
}
} else {
obj.data[i] = typeof obj.data[i] === 'object' && obj.data[i] ? RG.arrayPad([], obj.data[i].length, 0) : (RG.isNull(obj.data[i]) ? null : 0);
}
}
if (frame >= opt.frames) {
callback(obj);
} else {
RG.redrawCanvas(obj.canvas);
RG.Effects.updateCanvas(iterator);
}
}
iterator();
return this;
};
/**
* Grow
*
* The Bar chart Grow effect gradually increases the values of the bars
*
* @param object An object of options - eg: {frames: 30}
* @param function A function to call when the effect is complete
*/
this.grow = function ()
{
// Callback
var opt = arguments[0] || {};
var frames = opt.frames || 30;
var frame = 0;
var callback = arguments[1] || function () {};
var obj = this;
// Save the data
obj.original_data = RG.arrayClone(obj.data);
// Stop the scale from changing by setting chart.ymax (if it's not already set)
if (prop['chart.ymax'] == null) {
var ymax = 0;
for (var i=0; i<obj.data.length; ++i) {
if (RG.isArray(obj.data[i]) && prop['chart.grouping'] === 'stacked') {
ymax = ma.max(ymax, ma.abs(RG.arraySum(obj.data[i])));
} else if (RG.isArray(obj.data[i]) && prop['chart.grouping'] === 'grouped') {
for (var j=0,group=[]; j<obj.data[i].length; j++) {
group.push(ma.abs(obj.data[i][j]));
}
ymax = ma.max(ymax, ma.abs(RG.arrayMax(group)));
} else {
ymax = ma.max(ymax, ma.abs(obj.data[i]));
}
}
var scale = RG.getScale2(obj, {'max':ymax});
obj.Set('chart.ymax', scale.max);
}
var iterator = function ()
{
var easingMultiplier = RG.Effects.getEasingMultiplier(frames, frame);
// Alter the Bar chart data depending on the frame
for (var j=0,len=obj.original_data.length; j<len; ++j) {
if (typeof obj.data[j] === 'object') {
for (var k=0,len2=obj.data[j].length; k<len2; ++k) {
obj.data[j][k] = easingMultiplier * obj.original_data[j][k];
}
} else {
obj.data[j] = easingMultiplier * obj.original_data[j];
}
}
//RGraph.clear(obj.canvas);
RGraph.redrawCanvas(obj.canvas);
if (frame < frames) {
frame += 1;
RG.Effects.updateCanvas(iterator);
// Call the callback function
} else {
callback(obj);
}
};
iterator();
return this;
};
/**
* Register the object
*/
RG.register(this);
/**
* This is the 'end' of the constructor so if the first argument
* contains configuration dsta - handle that.
*/
if (parseConfObjectForOptions) {
RG.parseObjectStyleConfig(this, conf.options);
}
};
/**************************
* 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 = [];
var objects = [];
if (RGraph.isArray(arguments[0])) {
objects = arguments[0];
} else {
for (var i=0; i<arguments.length; i+=1) {
objects[i] = arguments[i];
}
}
for (var i=0; i<objects.length; ++i) {
this.objects[i] = objects[i];
/**
* Set the Line chart gutters to match the Bar chart gutters
*/
this.objects[i].Set({
gutterLeft: this.objects[0].get('gutterLeft'),
gutterRight: this.objects[0].get('gutterRight'),
gutterTop: this.objects[0].get('gutterTop'),
gutterBottom: this.objects[0].get('gutterBottom')
});
if (this.objects[i].type == 'line') {
var obj = this.objects[i];
/**
* Set the line chart hmargin
*/
obj.set('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
*/
obj.set('noaxes', true);
obj.set('backgroundGrid', false);
obj.set('ylabels', false);
}
/**
* Resizing
*/
if (this.objects[i].get('chart.resizable')) {
var resizable_object = obj;
}
}
/**
* Resizing
*/
if (resizable_object) {
/**
* This recalculates the Line chart hmargin when the chart is resized
*/
function myOnresizebeforedraw (obj)
{
var gutterLeft = obj.get('gutterLeft');
var gutterRight = obj.get('gutterRight');
obj.set('hmargin', (obj.canvas.width - gutterLeft - gutterRight) / (obj.original_data[0].length * 2));
}
RGraph.AddCustomEventListener(
resizable_object,
'onresizebeforedraw',
myOnresizebeforedraw
);
}
};
/**
* The Add method can be used to add methods to the CombinedChart object.
*/
RGraph.CombinedChart.prototype.add =
RGraph.CombinedChart.prototype.Add = function (obj)
{
this.objects.push(obj);
};
/**
* The Draw method goes through all of the objects drawing them (sequentially)
*/
RGraph.CombinedChart.prototype.draw =
RGraph.CombinedChart.prototype.Draw = function ()
{
for (var i=0; i<this.objects.length; ++i) {
this.objects[i].Draw();
}
};