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// version: 2014-08-16
/**
* 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 Creative Commons BY-NC license. That means |
* | that for non-commercial purposes it's free to use and for business use there's |
* | a 99 GBP per-company fee to pay. You can read the full license here: |
* | |
* | http://www.rgraph.net/license |
* o--------------------------------------------------------------------------------o
*/
RGraph = window.RGraph || {isRGraph: true};
/**
* 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 (conf) {
/**
* Allow for object config style
*/
if (typeof conf === 'object'
&& typeof conf.data === 'object'
&& typeof conf.id === 'string') {
var id = conf.id
var canvas = document.getElementById(id);
var data = conf.data;
var parseConfObjectForOptions = true; // Set this so the config is parsed (at the end of the constructor)
} else {
var id = conf;
var canvas = document.getElementById(id);
var data = arguments[1];
}
this.id = id;
this.canvas = canvas;
this.context = this.canvas.getContext ? this.canvas.getContext("2d", {alpha: (typeof id === 'object' && id.alpha === false) ? false : true}) : null;
this.canvas.__object__ = this;
this.data = data;
this.type = 'hbar';
this.isRGraph = true;
this.uid = RGraph.CreateUID();
this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
this.colorsParsed = false;
this.coords = [];
this.coords2 = [];
this.coordsText = [];
this.original_colors = [];
this.firstDraw = true; // After the first draw this will be false
/**
* 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': 25,
'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': 'rgba(0,0,0,0)',
'chart.background.barcolor2': 'rgba(0,0,0,0)',
'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.background.grid.dashed': false,
'chart.background.grid.dotted': false,
'chart.background.color': null,
'chart.linewidth': 1,
'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.yaxis.color': null,
'chart.title.xaxis.pos': null,
'chart.title.yaxis.pos': 0.8,
'chart.title.yaxis.x': null,
'chart.title.yaxis.y': null,
'chart.title.xaxis.x': null,
'chart.title.xaxis.y': null,
'chart.title.hpos': null,
'chart.title.vpos': null,
'chart.title.bold': true,
'chart.title.font': null,
'chart.title.x': null,
'chart.title.y': null,
'chart.title.halign': null,
'chart.title.valign': null,
'chart.text.size': 10,
'chart.text.color': 'black',
'chart.text.font': 'Arial',
'chart.colors': ['Gradient(white:red)', 'Gradient(white:blue)', 'Gradient(white:green)', 'Gradient(white:pink)', 'Gradient(white:yellow)', 'Gradient(white:cyan)', 'Gradient(white:navy)', 'Gradient(white:gray)', 'Gradient(white:black)'],
'chart.colors.sequential': false,
'chart.xlabels.specific': null,
'chart.labels': [],
'chart.labels.above': false,
'chart.labels.above.decimals': 0,
'chart.labels.above.specific': null,
'chart.xlabels': true,
'chart.xlabels.count': 5,
'chart.contextmenu': null,
'chart.key': null,
'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': false,
'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.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.text.color': 'black',
'chart.units.pre': '',
'chart.units.post': '',
'chart.units.ingraph': false,
'chart.strokestyle': 'rgba(0,0,0,0)',
'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': 2,
'chart.vmargin.grouped': 2,
'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(255,255,255,0.7)',
'chart.highlight.stroke': 'rgba(0,0,0,0)',
'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.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,
'chart.events.click': null,
'chart.events.mousemove': null,
'chart.noxaxis': false,
'chart.noyaxis': false,
'chart.noaxes': false,
'chart.noxtickmarks': false,
'chart.noytickmarks': false,
'chart.numyticks': data.length,
'chart.numxticks': 10
}
// Check for support
if (!this.canvas) {
alert('[HBAR] No canvas support');
return;
}
for (i = 0, len = this.data.length; i < len; ++i) {
if (typeof this.data[i] == 'object') {
this.stackedOrGrouped = true;
}
}
/**
* Create the dollar objects so that functions can be added to them
*/
var linear_data = RGraph.arrayLinearize(data);
for (var i = 0, len = linear_data.length; i < len; ++i) {
this['$' + i] = {};
}
/**
* Create the linear data array
*/
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;
var ca = this.canvas;
var co = ca.getContext('2d');
var prop = this.properties;
var jq = jQuery;
var pa = RG.Path;
var win = window;
var doc = document;
var 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 name === 'object') {
RG.parseObjectStyleConfig(this, name);
return this;
}
name = name.toLowerCase();
/**
* This should be done first - prepend the propertyy name with "chart." if necessary
*/
if (name.substr(0, 6) != 'chart.') {
name = 'chart.' + name;
}
if (name == 'chart.labels.abovebar') {
name = 'chart.labels.above';
}
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;
}
if (name == 'chart.labels.abovebar') {
name = 'chart.labels.above';
}
return prop[name];
};
/**
* The function you call to draw the bar chart
*/
this.draw =
this.Draw = function () {
/**
* Fire the onbeforedraw event
*/
RG.FireCustomEvent(this, 'onbeforedraw');
/**
* Parse the colors. This allows for simple gradient syntax
*/
if (!this.colorsParsed) {
this.parseColors();
// Don't want to do this again
this.colorsParsed = true;
}
/**
* This is new in May 2011 and facilitates indiviual gutter settings,
* eg chart.gutter.left
*/
this.gutterLeft = prop['chart.gutter.left'];
this.gutterRight = prop['chart.gutter.right'];
this.gutterTop = prop['chart.gutter.top'];
this.gutterBottom = prop['chart.gutter.bottom'];
/**
* Stop the coords array from growing uncontrollably
*/
this.coords = [];
this.coords2 = [];
this.coordsText = [];
this.max = 0;
/**
* Check for chart.xmin in stacked charts
*/
if (prop['chart.xmin'] > 0 && prop['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 = ca.width - this.gutterLeft - this.gutterRight;
this.graphheight = ca.height - this.gutterTop - this.gutterBottom;
this.halfgrapharea = this.grapharea / 2;
this.halfTextHeight = prop['chart.text.size'] / 2;
// Progressively Draw the chart
RG.Background.draw(this);
this.Drawbars();
this.DrawAxes();
this.DrawLabels();
// 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
*/
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;
};
/**
* This draws the axes
*/
this.drawAxes =
this.DrawAxes = function () {
var halfway = ma.round((this.graphwidth / 2) + this.gutterLeft);
co.beginPath();
co.lineWidth = prop['chart.axis.linewidth'] ? prop['chart.axis.linewidth'] + 0.001 : 1.001;
co.strokeStyle = prop['chart.axis.color'];
// Draw the Y axis
if (prop['chart.noyaxis'] == false && prop['chart.noaxes'] == false) {
if (prop['chart.yaxispos'] == 'center') {
co.moveTo(halfway, this.gutterTop);
co.lineTo(halfway, ca.height - this.gutterBottom);
} else if (prop['chart.yaxispos'] == 'right') {
co.moveTo(ca.width - this.gutterRight, this.gutterTop);
co.lineTo(ca.width - this.gutterRight, ca.height - this.gutterBottom);
} else {
co.moveTo(this.gutterLeft, this.gutterTop);
co.lineTo(this.gutterLeft, ca.height - this.gutterBottom);
}
}
// Draw the X axis
if (prop['chart.noxaxis'] == false && prop['chart.noaxes'] == false) {
co.moveTo(this.gutterLeft + 0.001, ca.height - this.gutterBottom + 0.001);
co.lineTo(ca.width - this.gutterRight + 0.001, ca.height - this.gutterBottom + 0.001);
}
// Draw the Y tickmarks
if (prop['chart.noytickmarks'] == false
&& prop['chart.noyaxis'] == false
&& prop['chart.numyticks'] > 0
&& prop['chart.noaxes'] == false
) {
var yTickGap = (ca.height - this.gutterTop - this.gutterBottom) / (prop['chart.numyticks'] > 0 ? prop['chart.numyticks'] : this.data.length);
for (y = this.gutterTop; y < (ca.height - this.gutterBottom - 1); y += yTickGap) {
if (prop['chart.yaxispos'] == 'center') {
co.moveTo(halfway + 3, ma.round(y));
co.lineTo(halfway - 3, ma.round(y));
} else if (prop['chart.yaxispos'] == 'right') {
co.moveTo(ca.width - this.gutterRight, ma.round(y));
co.lineTo(ca.width - this.gutterRight + 3, ma.round(y));
} else {
co.moveTo(this.gutterLeft, ma.round(y));
co.lineTo(this.gutterLeft - 3, ma.round(y));
}
}
// If the X axis isn't being shown draw the end tick
if (prop['chart.noxaxis'] == true) {
if (prop['chart.yaxispos'] == 'center') {
co.moveTo(halfway + 3, ma.round(y));
co.lineTo(halfway - 3, ma.round(y));
} else if (prop['chart.yaxispos'] == 'right') {
co.moveTo(ca.width - this.gutterRight, ma.round(y));
co.lineTo(ca.width - this.gutterRight + 3, ma.round(y));
} else {
co.moveTo(this.gutterLeft, ma.round(y));
co.lineTo(this.gutterLeft - 3, ma.round(y));
}
}
}
// Draw the X tickmarks
if (prop['chart.noxtickmarks'] == false
&& prop['chart.noxaxis'] == false
&& prop['chart.numxticks'] > 0
&& prop['chart.noaxes'] == false) {
xTickGap = (ca.width - this.gutterLeft - this.gutterRight ) / prop['chart.numxticks'];
yStart = ca.height - this.gutterBottom;
yEnd = (ca.height - this.gutterBottom) + 3;
var i = prop['chart.yaxispos'] === 'center' ? 5 : 10;
while (i--) {
var gap = (ca.width - this.gutterRight - this.gutterLeft) / 10
var x = ca.width - this.gutterRight - (i * gap);
if (prop['chart.yaxispos'] === 'right') {
x -= gap;
}
co.moveTo(ma.round(x), yStart);
co.lineTo(ma.round(x), yEnd);
}
if (prop['chart.yaxispos'] === 'center') {
var i = 5;
while (i--) {
var x = this.gutterLeft + (gap * i);
co.moveTo(ma.round(x), yStart);
co.lineTo(ma.round(x), yEnd);
}
}
// If the Y axis isn't being shown draw the end tick
if (prop['chart.noyaxis'] == true) {
co.moveTo(this.gutterLeft, ma.round(yStart));
co.lineTo(this.gutterLeft, ma.round(yEnd));
}
}
co.stroke();
/**
* Reset the linewidth
*/
co.lineWidth = 1;
};
/**
* This draws the labels for the graph
*/
this.drawLabels =
this.DrawLabels = function () {
var units_pre = prop['chart.units.pre'];
var units_post = prop['chart.units.post'];
var text_size = prop['chart.text.size'];
var font = prop['chart.text.font'];
/**
* Set the units to blank if they're to be used for ingraph labels only
*/
if (prop['chart.units.ingraph']) {
units_pre = '';
units_post = '';
}
/**
* Draw the X axis labels
*/
if (prop['chart.xlabels']) {
/**
* Specific X labels
*/
if (RG.isArray(prop['chart.xlabels.specific'])) {
if (prop['chart.yaxispos'] == 'center') {
var halfGraphWidth = this.graphwidth / 2;
var labels = prop['chart.xlabels.specific'];
var interval = (this.graphwidth / 2) / (labels.length - 1);
co.fillStyle = prop['chart.text.color'];
for (var i = 0; i < labels.length; i += 1) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + halfGraphWidth + (interval * i),
'y': ca.height - this.gutterBottom,
'text': labels[i],
'valign': 'top',
'halign': 'center',
'tag': 'scale'
});
}
for (var i = (labels.length - 1); i > 0; i -= 1) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + (interval * (labels.length - i - 1)),
'y': ca.height - this.gutterBottom,
'text': labels[i],
'valign': 'top',
'halign': 'center',
'tag': 'scale'
});
}
} else if (prop['chart.yaxispos'] == 'right') {
var labels = prop['chart.xlabels.specific'];
var interval = this.graphwidth / (labels.length - 1);
co.fillStyle = prop['chart.text.color'];
for (var i = 0; i < labels.length; i += 1) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + (interval * i),
'y': ca.height - this.gutterBottom,
'text': labels[labels.length - i - 1],
'valign': 'top',
'halign': 'center',
'tag': 'scale'
});
}
} else {
var labels = prop['chart.xlabels.specific'];
var interval = this.graphwidth / (labels.length - 1);
co.fillStyle = prop['chart.text.color'];
for (var i = 0; i < labels.length; i += 1) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + (interval * i),
'y': ca.height - this.gutterBottom,
'text': labels[i],
'valign': 'top',
'halign': 'center',
'tag': 'scale'
});
}
}
/**
* Draw an X scale
*/
} else {
var gap = 7;
co.beginPath();
co.fillStyle = prop['chart.text.color'];
if (prop['chart.yaxispos'] == 'center') {
for (var i = 0; i < this.scale2.labels.length; ++i) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + (this.graphwidth / 2) - ((this.graphwidth / 2) * ((i + 1) / this.scale2.labels.length)),
'y': this.gutterTop + this.halfTextHeight + this.graphheight + gap,
'text': '-' + this.scale2.labels[i],
'valign': 'center',
'halign': 'center',
'tag': 'scale'
});
}
for (var i = 0; i < this.scale2.labels.length; ++i) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + ((this.graphwidth / 2) * ((i + 1) / this.scale2.labels.length)) + (this.graphwidth / 2),
'y': this.gutterTop + this.halfTextHeight + this.graphheight + gap,
'text': this.scale2.labels[i],
'valign': 'center',
'halign': 'center',
'tag': 'scale'
});
}
} else if (prop['chart.yaxispos'] == 'right') {
for (var i = 0, len = this.scale2.labels.length; i < len; ++i) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + (i * (this.graphwidth / len)),
'y': this.gutterTop + this.halfTextHeight + this.graphheight + gap,
'text': '-' + this.scale2.labels[len - 1 - i],
'valign': 'center',
'halign': 'center',
'tag': 'scale'
});
}
} else {
for (var i = 0, len = this.scale2.labels.length; i < len; ++i) {
RG.Text2(this, {
'font': font,
'size': text_size,
'x': this.gutterLeft + (this.graphwidth * ((i + 1) / len)),
'y': this.gutterTop + this.halfTextHeight + this.graphheight + gap,
'text': this.scale2.labels[i],
'valign': 'center',
'halign': 'center',
'tag': 'scale'
});
}
}
/**
* If xmin is not zero - draw that
*/
if (prop['chart.xmin'] > 0 || prop['chart.noyaxis'] == true) {
var x = prop['chart.yaxispos'] == 'center' ? this.gutterLeft + (this.graphwidth / 2) : this.gutterLeft;
/**
* Y axis on the right
*/
if (prop['chart.yaxispos'] === 'right') {
var x = ca.width - this.gutterRight;
}
RG.Text2(this, {
'font': font,
'size': text_size,
'x': x,
'y': this.gutterTop + this.halfTextHeight + this.graphheight + gap,
'text': RG.number_format(this, prop['chart.xmin'].toFixed(prop['chart.scale.decimals']), units_pre, units_post),
'valign': 'center',
'halign': 'center',
'tag': 'scale'
});
}
co.fill();
co.stroke();
}
}
/**
* The Y axis labels
*/
if (typeof(prop['chart.labels']) == 'object') {
var xOffset = 5;
var font = prop['chart.text.font'];
// Draw the X axis labels
co.fillStyle = prop['chart.text.color'];
// How high is each bar
var barHeight = (ca.height - this.gutterTop - this.gutterBottom ) / prop['chart.labels'].length;
// Reset the yTickGap
yTickGap = (ca.height - this.gutterTop - this.gutterBottom) / prop['chart.labels'].length
/**
* If the Y axis is on the right set the alignment and the X position, otherwise on the left
*/
if (prop['chart.yaxispos'] === 'right') {
var x = ca.width - this.gutterRight + xOffset;
var halign = 'left'
} else {
var x = this.gutterLeft - xOffset;
var halign = 'right'
}
// Draw the X tickmarks
var i = 0;
for (y = this.gutterTop + (yTickGap / 2); y <= ca.height - this.gutterBottom; y += yTickGap) {
RG.Text2(this, {
'font': font,
'size': prop['chart.text.size'],
'x': x,
'y': y,
'text': String(prop['chart.labels'][i++]),
'halign': halign,
'valign': 'center',
'tag': 'labels'
});
}
}
};
/**
* This function draws the bars
*/
this.drawbars =
this.Drawbars = function () {
co.lineWidth = prop['chart.linewidth'];
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][0];
var prevX = 0;
var prevY = 0;
/**
* Work out the max value
*/
if (prop['chart.xmax']) {
this.scale2 = RG.getScale2(this, {
'max': prop['chart.xmax'],
'min': prop['chart.xmin'],
'scale.decimals': Number(prop['chart.scale.decimals']),
'scale.point': prop['chart.scale.point'],
'scale.thousand': prop['chart.scale.thousand'],
'scale.round': prop['chart.scale.round'],
'units.pre': prop['chart.units.pre'],
'units.post': prop['chart.units.post'],
'ylabels.count': prop['chart.xlabels.count'],
'strict': true
});
this.max = this.scale2.max;
} else {
var grouping = prop['chart.grouping'];
for (i = 0; i < this.data.length; ++i) {
if (typeof(this.data[i]) == 'object') {
var value = grouping == 'grouped' ? Number(RG.array_max(this.data[i], true)) : Number(RG.array_sum(this.data[i]));
} else {
var value = Number(Math.abs(this.data[i]));
}
this.max = ma.max(Math.abs(this.max), Math.abs(value));
}
this.scale2 = RG.getScale2(this, {
'max': this.max,
'min': prop['chart.xmin'],
'scale.decimals': Number(prop['chart.scale.decimals']),
'scale.point': prop['chart.scale.point'],
'scale.thousand': prop['chart.scale.thousand'],
'scale.round': prop['chart.scale.round'],
'units.pre': prop['chart.units.pre'],
'units.post': prop['chart.units.post'],
'ylabels.count': prop['chart.xlabels.count']
});
this.max = this.scale2.max;
this.min = this.scale2.min;
}
if (prop['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 = (ca.width - this.gutterLeft - this.gutterRight);
var halfwidth = graphwidth / 2;
for (i = 0, len = this.data.length; i < len; ++i) {
// Work out the width and height
var width = ma.abs((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 = prop['chart.vmargin'];
// Account for the Y axis being on the right hand side
if (prop['chart.yaxispos'] === 'right') {
x = ca.width - this.gutterRight - ma.abs(width);
}
// Account for negative lengths - Some browsers (eg Chrome) don't like a negative value
if (width < 0) {
x -= width;
width = ma.abs(width);
}
/**
* Turn on the shadow if need be
*/
if (prop['chart.shadow']) {
co.shadowColor = prop['chart.shadow.color'];
co.shadowBlur = prop['chart.shadow.blur'];
co.shadowOffsetX = prop['chart.shadow.offsetx'];
co.shadowOffsetY = prop['chart.shadow.offsety'];
}
/**
* Draw the bar
*/
co.beginPath();
if (typeof(this.data[i]) == 'number') {
var barHeight = height - (2 * vmargin);
var barWidth = ((this.data[i] - prop['chart.xmin']) / (this.max - prop['chart.xmin'])) * this.graphwidth;
var barX = this.gutterLeft;
// Account for Y axis pos
if (prop['chart.yaxispos'] == 'center') {
barWidth /= 2;
barX += halfwidth;
if (this.data[i] < 0) {
barWidth = (Math.abs(this.data[i]) - prop['chart.xmin']) / (this.max - prop['chart.xmin']);
barWidth = barWidth * (this.graphwidth / 2);
barX = ((this.graphwidth / 2) + this.gutterLeft) - barWidth;
}
} else if (prop['chart.yaxispos'] == 'right') {
barWidth = Math.abs(barWidth);
barX = ca.width - this.gutterRight - barWidth;
}
// Set the fill color
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][0];
// Sequential colors
if (prop['chart.colors.sequential']) {
co.fillStyle = prop['chart.colors'][colorIdx++];
}
co.strokeRect(barX, this.gutterTop + (i * height) + prop['chart.vmargin'], barWidth, barHeight);
co.fillRect(barX, this.gutterTop + (i * height) + prop['chart.vmargin'], barWidth, barHeight);
this.coords.push([barX,
y + vmargin,
barWidth,
height - (2 * vmargin),
co.fillStyle,
this.data[i],
true]);
/**
* Stacked bar chart
*/
} else if (typeof(this.data[i]) == 'object' && prop['chart.grouping'] == 'stacked') {
if (prop['chart.yaxispos'] == 'center') {
alert('[HBAR] You can\'t have a stacked chart with the Y axis in the center, change it to grouped');
} else if (prop['chart.yaxispos'] == 'right') {
var x = ca.width - this.gutterRight
}
var barHeight = height - (2 * vmargin);
if (typeof this.coords2[i] == 'undefined') {
this.coords2[i] = [];
}
for (j = 0; j < this.data[i].length; ++j) {
// Set the fill/stroke colors
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][j];
// Sequential colors
if (prop['chart.colors.sequential']) {
co.fillStyle = prop['chart.colors'][colorIdx++];
}
var width = (((this.data[i][j]) / (this.max))) * this.graphwidth;
var totalWidth = (RG.arraySum(this.data[i]) / this.max) * this.graphwidth;
if (prop['chart.yaxispos'] === 'right') {
x -= width;
}
co.strokeRect(x, this.gutterTop + prop['chart.vmargin'] + (this.graphheight / this.data.length) * i, width, height - (2 * vmargin));
co.fillRect(x, this.gutterTop + prop['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),
co.fillStyle,
RG.array_sum(this.data[i]),
j == (this.data[i].length - 1)
]);
this.coords2[i].push([x,
y + vmargin,
width,
height - (2 * vmargin),
co.fillStyle,
RG.array_sum(this.data[i]),
j == (this.data[i].length - 1)
]);
if (prop['chart.yaxispos'] !== 'right') {
x += width;
}
}
/**
* A grouped bar chart
*/
} else if (typeof(this.data[i]) == 'object' && prop['chart.grouping'] == 'grouped') {
var vmarginGrouped = prop['chart.vmargin.grouped'];
var individualBarHeight = ((height - (2 * vmargin) - ((this.data[i].length - 1) * vmarginGrouped)) / this.data[i].length)
if (typeof this.coords2[i] == 'undefined') {
this.coords2[i] = [];
}
for (j = 0; j < this.data[i].length; ++j) {
/**
* Turn on the shadow if need be
*/
if (prop['chart.shadow']) {
RG.setShadow(this, prop['chart.shadow.color'], prop['chart.shadow.offsetx'], prop['chart.shadow.offsety'], prop['chart.shadow.blur']);
}
// Set the fill/stroke colors
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][j];
// Sequential colors
if (prop['chart.colors.sequential']) {
co.fillStyle = prop['chart.colors'][colorIdx++];
}
var startY = this.gutterTop + (height * i) + (individualBarHeight * j) + vmargin + (vmarginGrouped * j);
var width = ((this.data[i][j] - prop['chart.xmin']) / (this.max - prop['chart.xmin'])) * (ca.width - this.gutterLeft - this.gutterRight );
var startX = this.gutterLeft;
// Account for the Y axis being in the middle
if (prop['chart.yaxispos'] == 'center') {
width /= 2;
startX += halfwidth;
// Account for the Y axis being on the right
} else if (prop['chart.yaxispos'] == 'right') {
width = ma.abs(width);
startX = ca.width - this.gutterRight - ma.abs(width);
;
}
if (width < 0) {
startX += width;
width *= -1;
}
co.strokeRect(startX, startY, width, individualBarHeight);
co.fillRect(startX, startY, width, individualBarHeight);
this.coords.push([startX,
startY,
width,
individualBarHeight,
co.fillStyle,
this.data[i][j],
true]);
this.coords2[i].push([startX,
startY,
width,
individualBarHeight,
co.fillStyle,
this.data[i][j],
true]);
}
startY += vmargin;
}
co.closePath();
}
co.stroke();
co.fill();
/**
* Now the bars are stroke()ed, turn off the shadow
*/
RG.NoShadow(this);
this.RedrawBars();
};
/**
* This function goes over the bars after they been drawn, so that upwards shadows are underneath the bars
*/
this.redrawBars =
this.RedrawBars = function () {
if (prop['chart.noredraw']) {
return;
}
var coords = this.coords;
var font = prop['chart.text.font'];
var size = prop['chart.text.size'];
var color = prop['chart.text.color'];
RG.noShadow(this);
co.strokeStyle = prop['chart.strokestyle'];
for (var i = 0; i < coords.length; ++i) {
if (prop['chart.shadow']) {
co.beginPath();
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = coords[i][4];
co.lineWidth = prop['chart.linewidth'];
co.rect(coords[i][0], coords[i][1], coords[i][2], coords[i][3]);
co.stroke();
co.fill();
}
/**
* Draw labels "above" the bar
*/
var halign = 'left';
if (prop['chart.labels.above'] && coords[i][6]) {
co.fillStyle = prop['chart.text.color'];
co.strokeStyle = 'black';
RG.noShadow(this);
var border = (coords[i][0] + coords[i][2] + 7 + co.measureText(prop['chart.units.pre'] + this.coords[i][5] + prop['chart.units.post']).width) > ca.width ? true : false;
/**
* Default to the value - then check for specific labels
*/
var text = RG.numberFormat(this, (this.coords[i][5]).toFixed(prop['chart.labels.above.decimals']), prop['chart.units.pre'], prop['chart.units.post']);
if (typeof prop['chart.labels.above.specific'] == 'object' && prop['chart.labels.above.specific'] && prop['chart.labels.above.specific'][i]) {
text = prop['chart.labels.above.specific'][i];
}
var x = coords[i][0] + coords[i][2] + 5;
var y = coords[i][1] + (coords[i][3] / 2);
if (prop['chart.yaxispos'] === 'right') {
x = coords[i][0] - 5;
halign = 'right';
} else if (prop['chart.yaxispos'] === 'center' && this.data_arr[i] < 0) {
x = coords[i][0] - 5;
halign = 'right';
}
RG.Text2(this, {
'font': font,
'size': size,
'x': x,
'y': y,
'text': text,
'valign': 'center',
'halign': halign,
'tag': 'labels.above'
});
}
}
};
/**
* This function can be used to get the appropriate bar information (if any)
*
* @param e Event object
* @return Appriate bar information (if any)
*/
this.getShape =
this.getBar = function (e) {
var mouseCoords = RG.getMouseXY(e);
/**
* Loop through the bars determining if the mouse is over a bar
*/
for (var i = 0, len = this.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 = this.coords[i][0];
var top = this.coords[i][1];
var width = this.coords[i][2];
var height = this.coords[i][3];
var idx = i;
if (mouseX >= left && mouseX <= (left + width) && mouseY >= top && mouseY <= (top + height)) {
var tooltip = RG.parseTooltipText(prop['chart.tooltips'], i);
return {
0: this, 'object': this,
1: left, 'x': left,
2: top, 'y': top,
3: width, 'width': width,
4: height, 'height': height,
5: idx, 'index': idx,
'tooltip': tooltip
};
}
}
};
/**
* When you click on the chart, this method can return the X value at that point. It works for any point on the
* chart (that is inside the gutters) - not just points within the Bars.
*
* @param object e The event object
*/
this.getValue = function (arg) {
if (arg.length == 2) {
var mouseX = arg[0];
var mouseY = arg[1];
} else {
var mouseCoords = RG.getMouseXY(arg);
var mouseX = mouseCoords[0];
var mouseY = mouseCoords[1];
}
if (mouseY < this.gutterTop
|| mouseY > (ca.height - this.gutterBottom)
|| mouseX < this.gutterLeft
|| mouseX > (ca.width - this.gutterRight)
) {
return null;
}
if (prop['chart.yaxispos'] == 'center') {
var value = ((mouseX - this.gutterLeft) / (this.graphwidth / 2)) * (this.max - prop['chart.xmin']);
value = value - this.max
// Special case if xmin is defined
if (prop['chart.xmin'] > 0) {
value = ((mouseX - this.gutterLeft - (this.graphwidth / 2)) / (this.graphwidth / 2)) * (this.max - prop['chart.xmin']);
value += prop['chart.xmin'];
if (mouseX < (this.gutterLeft + (this.graphwidth / 2))) {
value -= (2 * prop['chart.xmin']);
}
}
} else {
var value = ((mouseX - this.gutterLeft) / this.graphwidth) * (this.max - prop['chart.xmin']);
value += prop['chart.xmin'];
}
return value;
};
/**
* Each object type has its own Highlight() function which highlights the appropriate shape
*
* @param object shape The shape to highlight
*/
this.highlight =
this.Highlight = function (shape) {
// Add the new highlight
RG.Highlight.Rect(this, shape);
};
/**
* The getObjectByXY() worker method. Don't call this call:
*
* RG.ObjectRegistry.getObjectByXY(e)
*
* @param object e The event object
*/
this.getObjectByXY = function (e) {
var mouseXY = RG.getMouseXY(e);
if (
mouseXY[0] > this.gutterLeft
&& mouseXY[0] < (ca.width - this.gutterRight)
&& mouseXY[1] > this.gutterTop
&& mouseXY[1] < (ca.height - this.gutterBottom)
) {
return this;
}
};
/**
* This function positions a tooltip when it is displayed
*
* @param obj object The chart object
* @param int x The X coordinate specified for the tooltip
* @param int y The Y coordinate specified for the tooltip
* @param objec tooltip The tooltips DIV element
*/
this.positionTooltip = function (obj, x, y, tooltip, idx) {
var coordX = obj.coords[tooltip.__index__][0];
var coordY = obj.coords[tooltip.__index__][1];
var coordW = obj.coords[tooltip.__index__][2];
var coordH = obj.coords[tooltip.__index__][3];
var canvasXY = RG.getCanvasXY(obj.canvas);
var gutterLeft = obj.gutterLeft;
var gutterTop = obj.gutterTop;
var width = tooltip.offsetWidth;
var height = tooltip.offsetHeight;
// Set the top position
tooltip.style.left = 0;
tooltip.style.top = canvasXY[1] + coordY + (coordH / 2) - height + 'px';
// By default any overflow is hidden
tooltip.style.overflow = '';
// The arrow
var img = new Image();
img.src = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAFCAYAAACjKgd3AAAARUlEQVQYV2NkQAN79+797+RkhC4M5+/bd47B2dmZEVkBCgcmgcsgbAaA9GA1BCSBbhAuA/AagmwQPgMIGgIzCD0M0AMMAEFVIAa6UQgcAAAAAElFTkSuQmCC';
img.style.position = 'absolute';
img.id = '__rgraph_tooltip_pointer__';
img.style.top = (tooltip.offsetHeight - 2) + 'px';
tooltip.appendChild(img);
// Reposition the tooltip if at the edges:
// LEFT edge
if ((canvasXY[0] + coordX + (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] + (coordW / 2) + coordX + (width / 2)) > doc.body.offsetWidth) {
tooltip.style.left = canvasXY[0] + coordX - (width * 0.9) + (coordW / 2) + 'px';
img.style.left = ((width * 0.9) - 8.5) + 'px';
// Default positioning - CENTERED
} else {
tooltip.style.left = (canvasXY[0] + coordX + (coordW / 2) - (width * 0.5)) + 'px';
img.style.left = ((width * 0.5) - 8.5) + 'px';
}
};
/**
* Returns the appropriate Y coord for the given value
*
* @param number value The value to get the coord for
*/
this.getXCoord = function (value) {
if (prop['chart.yaxispos'] == 'center') {
// Range checking
if (value > this.max || value < (-1 * this.max)) {
return null;
}
var width = (ca.width - prop['chart.gutter.left'] - prop['chart.gutter.right']) / 2;
var coord = (((value - prop['chart.xmin']) / (this.max - prop['chart.xmin'])) * width) + width;
coord = prop['chart.gutter.left'] + coord;
} else {
// Range checking
if (value > this.max || value < 0) {
return null;
}
var width = ca.width - prop['chart.gutter.left'] - prop['chart.gutter.right'];
var coord = ((value - prop['chart.xmin']) / (this.max - prop['chart.xmin'])) * width;
coord = prop['chart.gutter.left'] + coord;
}
return coord;
};
/**
*
*/
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.'] = RG.array_clone(prop['chart.']);
this.original_colors['chart.colors'] = RG.array_clone(prop['chart.colors']);
this.original_colors['chart.background.grid.color'] = RG.array_clone(prop['chart.background.grid.color']);
this.original_colors['chart.background.color'] = RG.array_clone(prop['chart.background.color']);
this.original_colors['chart.background.barcolor1'] = RG.array_clone(prop['chart.background.barcolor1']);
this.original_colors['chart.background.barcolor2'] = RG.array_clone(prop['chart.background.barcolor2']);
this.original_colors['chart.text.color'] = RG.array_clone(prop['chart.text.color']);
this.original_colors['chart.labels.colors'] = RG.array_clone(prop['chart.labels.colors']);
this.original_colors['chart.strokestyle'] = RG.array_clone(prop['chart.strokestyle']);
this.original_colors['chart.axis.color'] = RG.array_clone(prop['chart.axis.color']);
this.original_colors['chart.highlight.fill'] = RG.array_clone(prop['chart.highlight.fill']);
this.original_colors['chart.highlight.stroke'] = RG.array_clone(prop['chart.highlight.stroke']);
}
var colors = prop['chart.colors'];
for (var i = 0; i < colors.length; ++i) {
colors[i] = this.parseSingleColorForGradient(colors[i]);
}
prop['chart.background.grid.color'] = this.parseSingleColorForGradient(prop['chart.background.grid.color']);
prop['chart.background.color'] = this.parseSingleColorForGradient(prop['chart.background.color']);
prop['chart.background.barcolor1'] = this.parseSingleColorForGradient(prop['chart.background.barcolor1']);
prop['chart.background.barcolor2'] = this.parseSingleColorForGradient(prop['chart.background.barcolor2']);
prop['chart.text.color'] = this.parseSingleColorForGradient(prop['chart.text.color']);
prop['chart.labels.colors'] = this.parseSingleColorForGradient(prop['chart.labels.colors']);
prop['chart.strokestyle'] = this.parseSingleColorForGradient(prop['chart.strokestyle']);
prop['chart.axis.color'] = this.parseSingleColorForGradient(prop['chart.axis.color']);
prop['chart.highlight.fill'] = this.parseSingleColorForGradient(prop['chart.highlight.fill']);
prop['chart.highlight.stroke'] = this.parseSingleColorForGradient(prop['chart.highlight.stroke']);
};
/**
* 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(':');
if (prop['chart.yaxispos'] === 'right') {
parts = RG.arrayReverse(parts);
}
// Create the gradient
var grad = co.createLinearGradient(prop['chart.gutter.left'], 0, ca.width - prop['chart.gutter.right'], 0);
var diff = 1 / (parts.length - 1);
grad.addColorStop(0, RG.trim(parts[0]));
for (var j = 1; j < parts.length; ++j) {
grad.addColorStop(j * diff, RG.trim(parts[j]));
}
}
return grad ? grad : color;
};
/**
* 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) {
var obj = this;
this.coords2.forEach(function (value, idx, arr) {
var shape = obj.coords2[idx][index]
var pre_linewidth = co.lineWidth;
co.lineWidth = 2;
co.fillStyle = prop['chart.key.interactive.highlight.chart.fill'];
co.strokeStyle = prop['chart.key.interactive.highlight.chart.stroke'];
co.fillRect(shape[0], shape[1], shape[2], shape[3]);
co.strokeRect(shape[0], shape[1], shape[2], shape[3]);
// Reset the lineWidth
co.lineWidth = pre_linewidth;
});
};
/**
* Using a function to add events makes it easier to facilitate method chaining
*
* @param string type The type of even to add
* @param function func
*/
this.on = function (type, func) {
if (type.substr(0, 2) !== 'on') {
type = 'on' + type;
}
this[type] = func;
return this;
};
/**
* This function runs once only
* (put at the end of the file (before any effects))
*/
this.firstDrawFunc = function () {
};
/**
* Grow
*
* The HBar chart Grow effect gradually increases the values of the bars
*
* @param object OPTIONAL Options for the effect. You can pass frames here
* @param function OPTIONAL A callback function
*/
this.grow = function () {
var obj = this;
var opt = arguments[0] || {};
var frames = opt.frames || 30;
var frame = 0;
var callback = arguments[1] || function () {
};
// Save the data
obj.original_data = RG.array_clone(obj.data);
// Stop the scale from changing by setting chart.ymax (if it's not already set)
if (obj.Get('chart.xmax') == 0) {
var xmax = 0;
for (var i = 0; i < obj.data.length; ++i) {
if (RG.is_array(obj.data[i]) && obj.Get('chart.grouping') == 'stacked') {
xmax = Math.max(xmax, RG.array_sum(obj.data[i]));
} else if (RG.is_array(obj.data[i]) && obj.Get('chart.grouping') == 'grouped') {
xmax = ma.max(xmax, RG.array_max(obj.data[i]));
} else {
xmax = ma.max(xmax, RG.array_max(obj.data[i]));
}
}
var scale2 = RG.getScale2(obj, {'max': xmax});
obj.Set('chart.xmax', scale2.max);
}
function iterator() {
// Alter the Bar chart data depending on the frame
for (var j = 0, len = obj.original_data.length; j < len; ++j) {
// This stops the animation from being completely linear
var easingFactor = RG.Effects.getEasingMultiplier(frames, frame);
if (typeof obj.data[j] === 'object') {
for (var k = 0, len2 = obj.data[j].length; k < len2; ++k) {
obj.data[j][k] = obj.original_data[j][k] * easingFactor;
}
} else {
obj.data[j] = obj.original_data[j] * easingFactor;
}
}
RG.redrawCanvas(obj.canvas);
if (frame < frames) {
frame += 1;
RG.Effects.updateCanvas(iterator);
} else {
callback(obj);
}
}
iterator();
return this;
};
/**
* Charts are now always registered
*/
RG.Register(this);
/**
* This is the 'end' of the constructor so if the first argument
* contains configuration data - handle that.
*/
if (parseConfObjectForOptions) {
RG.parseObjectStyleConfig(this, conf.options);
}
};