node-red-contrib-smartnode-hook
Version:
this project is dependenced by the node-red-contrib-smartnode for some IoT display function
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JavaScript
// version: 2014-11-15
/**
* 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 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
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];
}
// 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.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': 25,
'chart.gutter.left': 25,
'chart.gutter.right': 25,
'chart.labels': 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.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': 10,
'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.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.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;
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 arguments[0] === 'object') {
RG.parseObjectStyleConfig(this, arguments[0]);
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';
}
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;
}
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');
/**
* 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;
};
/**
* 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 ()
{
// Variable "caching" so the context can be accessed as a local variable
//var ca = this.canvas;
//var co = this.context;
//var prop = this.properties;
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 = RGraph.getScale2(this, {
'max':prop['chart.ymax'],
'strict': 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.array_max(this.data[i], true)) : Number(RG.array_sum(this.data[i]));
} else {
var value = Number(this.data[i]);
}
this.max = Math.max(Math.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'];
var width = (ca.width - this.gutterLeft - this.gutterRight ) / this.data.length;
var orig_height = height;
var hmargin = prop['chart.hmargin'];
var shadow = prop['chart.shadow'];
var shadowColor = prop['chart.shadow.color'];
var shadowBlur = prop['chart.shadow.blur'];
var shadowOffsetX = prop['chart.shadow.offsetx'];
var shadowOffsetY = prop['chart.shadow.offsety'];
var strokeStyle = prop['chart.strokecolor'];
var colors = prop['chart.colors'];
var 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) {
alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
}
// Set the fill color
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
co.beginPath();
co.moveTo(x + hmargin, y);
co.lineTo(x + hmargin + 10, y - 5);
co.lineTo(x + hmargin + 10 + barWidth, y - 5);
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 + 10, y - 5);
co.lineTo(x + hmargin + barWidth + 10, y + height - 5);
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 + 10, y - 5);
co.lineTo(x + hmargin + 10 + barWidth, y - 5);
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)';
co.moveTo(x + hmargin + barWidth, y);
co.lineTo(x + hmargin + barWidth + 10, y - 5);
co.lineTo(x + hmargin + barWidth + 10, y - 5 + height);
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) {
alert('[RGRAPH] Warning: you have a negative bar width. This may be caused by the chart.hmargin being too high or the width of the canvas not being sufficient.');
}
for (j=0; j<dataset.length; ++j) {
// Stacked bar chart and X axis pos in the middle - poitless since negative values are not permitted
if (xaxispos == 'center') {
alert("[BAR] It's pointless having the X axis position at the center on a stacked bar chart.");
return;
}
// Negative values not permitted for the stacked chart
if (this.data[i][j] < 0) {
alert('[BAR] Negative values are not permitted with a stacked bar chart. Try a grouped one instead.');
return;
}
/**
* Set the fill and stroke colors
*/
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