// version: 2017-11-25
/**
* o--------------------------------------------------------------------------------o
* | This file is part of the RGraph package - you can learn more at: |
* | |
* | http://www.rgraph.net |
* | |
* | RGraph is licensed under the Open Source MIT license. That means that it's |
* | totally free to use and there are no restrictions on what you can do with it! |
* o--------------------------------------------------------------------------------o
*/
RGraph = window.RGraph || {isRGraph: true};
RGraph.Effects = RGraph.Effects || {};
RGraph.Effects.Rose = RGraph.Effects.Rose || {};
/**
* The rose chart constuctor
*
* @param object canvas
* @param array data
*/
RGraph.Rose = function (conf)
{
/**
* Allow for object config style
*/
if ( typeof conf === 'object'
&& typeof conf.data === 'object'
&& typeof conf.id === 'string') {
var parseConfObjectForOptions = true; // Set this so the config is parsed (at the end of the constructor)
} else {
var conf = {id: conf};
conf.data = arguments[1];
}
this.id = conf.id;
this.canvas = document.getElementById(this.id);
this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null;
this.data = conf.data;
this.canvas.__object__ = this;
this.type = 'rose';
this.isRGraph = true;
this.uid = RGraph.CreateUID();
this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.CreateUID();
this.colorsParsed = false;
this.coordsText = [];
this.original_colors = [];
this.firstDraw = true; // After the first draw this will be false
this.centerx = 0;
this.centery = 0;
this.radius = 0;
this.max = 0;
this.angles = [];
this.angles2 = [];
this.properties =
{
'chart.background.axes': true,
'chart.background.axes.color': 'black',
'chart.background.grid': true,
'chart.background.grid.color': '#ccc',
'chart.background.grid.size': null,
'chart.background.grid.radials':null,
'chart.background.grid.count': 5,
'chart.centerx': null,
'chart.centery': null,
'chart.radius': null,
'chart.angles.start': 0,
'chart.colors': ['rgba(255,0,0,0.5)', 'rgba(255,255,0,0.5)', 'rgba(0,255,255,0.5)', 'rgb(0,255,0)', 'gray', 'blue', 'rgb(255,128,255)','green', 'pink', 'gray', 'aqua'],
'chart.linewidth': 1,
'chart.colors.sequential': false,
'chart.colors.alpha': null,
'chart.margin': 0,
'chart.strokestyle': '#aaa',
'chart.gutter.left': 25,
'chart.gutter.right': 25,
'chart.gutter.top': 25,
'chart.gutter.bottom': 25,
'chart.shadow': false,
'chart.shadow.color': '#aaa',
'chart.shadow.offsetx': 0,
'chart.shadow.offsety': 0,
'chart.shadow.blur': 15,
'chart.title': '',
'chart.title.background': 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.labels': null,
'chart.labels.color': null,
'chart.labels.position': 'center',
'chart.labels.axes': 'nsew',
'chart.labels.boxed': false,
'chart.labels.offset': 0,
'chart.text.color': 'black',
'chart.text.font': 'Segoe UI, Arial, Verdana, sans-serif',
'chart.text.size': 12,
'chart.text.accessible': true,
'chart.text.accessible.overflow': 'visible',
'chart.text.accessible.pointerevents': true,
'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.contextmenu': null,
'chart.tooltips': null,
'chart.tooltips.event': 'onclick',
'chart.tooltips.effect': 'fade',
'chart.tooltips.css.class': 'RGraph_tooltip',
'chart.tooltips.highlight': true,
'chart.highlight.stroke': 'rgba(0,0,0,0)',
'chart.highlight.fill': 'rgba(255,255,255,0.7)',
'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.adjustable': false,
'chart.ymax': null,
'chart.ymin': 0,
'chart.scale.decimals': null,
'chart.scale.point': '.',
'chart.scale.thousand': ',',
'chart.variant': 'stacked',
'chart.variant.threed.depth': 10,
'chart.exploded': 0,
'chart.events.mousemove': null,
'chart.events.click': null,
'chart.animation.roundrobin.factor': 1,
'chart.animation.roundrobin.radius': true,
'chart.animation.grow.multiplier': 1,
'chart.labels.count': 5,
'chart.segment.highlight': false,
'chart.segment.highlight.count': null,
'chart.segment.highlight.fill': 'rgba(0,255,0,0.5)',
'chart.segment.highlight.stroke': 'rgba(0,0,0,0)',
'chart.clearto': 'rgba(0,0,0,0)'
}
// Go through the data converting it to numbers
for (var i=0; i<this.data.length; ++i) {
if (typeof this.data[i] === 'string') {
this.data[i] = parseFloat(this.data[i]);
} else if (typeof this.data[i] === 'object') {
for (var j=0; j<this.data[i].length; ++j) {
if (typeof this.data[i][j] === 'string') {
this.data[i][j] = parseFloat(this.data[i][j]);
}
}
}
}
/**
* Create the $ objects. In the case of non-equi-angular rose charts it actually creates too many $ objects,
* but it doesn't matter.
*/
var linear_data = RGraph.arrayLinearize(this.data);
for (var i=0; i<linear_data.length; ++i) {
this["$" + i] = {};
}
/**
* 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,
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 simple setter
*
* @param string name The name of the property to set
* @param string value 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;
}
/**
* 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
while(name.match(/([A-Z])/)) {
name = name.replace(/([A-Z])/, '.' + RegExp.$1.toLowerCase());
}
// A little BC...
if (name === 'chart.background.grid.spokes') name = 'chart.background.grid.radials';
//
// Change chart.segments.highlight* to chart.segment.highlight (no plural)
//
if (name === 'chart.segments.highlight') name = 'chart.segment.highlight';
if (name === 'chart.segments.highlight.fill') name = 'chart.segment.highlight.fill';
if (name === 'chart.segments.highlight.stroke') name = 'chart.segment.highlight.stroke';
prop[name.toLowerCase()] = value;
return this;
};
/**
* A simple getter
*
* @param string name 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
while(name.match(/([A-Z])/)) {
name = name.replace(/([A-Z])/, '.' + RegExp.$1.toLowerCase());
}
return prop[name.toLowerCase()];
};
/**
* This method draws the rose chart
*/
this.draw =
this.Draw = function ()
{
/**
* Fire the onbeforedraw event
*/
RG.fireCustomEvent(this, 'onbeforedraw');
/**
* This doesn't affect the chart, but is used for compatibility
*/
this.gutterLeft = prop['chart.gutter.left'];
this.gutterRight = prop['chart.gutter.right'];
this.gutterTop = prop['chart.gutter.top'];
this.gutterBottom = prop['chart.gutter.bottom'];
// Calculate the radius
this.radius = (ma.min(ca.width - this.gutterLeft - this.gutterRight, ca.height - this.gutterTop - this.gutterBottom) / 2);
this.centerx = ((ca.width - this.gutterLeft - this.gutterRight) / 2) + this.gutterLeft;
this.centery = ((ca.height - this.gutterTop - this.gutterBottom) / 2) + this.gutterTop;
this.angles = [];
this.angles2 = [];
this.total = 0;
this.startRadians = prop['chart.angles.start'];
this.coordsText = [];
/**
* Change the centerx marginally if the key is defined
*/
if (prop['chart.key'] && prop['chart.key'].length > 0 && prop['chart.key'].length >= 3) {
this.centerx = this.centerx - this.gutterRight + 5;
}
// User specified radius, centerx and centery
if (typeof prop['chart.centerx'] == 'number') this.centerx = prop['chart.centerx'];
if (typeof prop['chart.centery'] == 'number') this.centery = prop['chart.centery'];
if (typeof prop['chart.radius'] == 'number') this.radius = prop['chart.radius'];
/**
* Parse the colors for gradients. Its down here so that the center X/Y can be used
*/
if (!this.colorsParsed) {
this.parseColors();
// Don't want to do this again
this.colorsParsed = true;
}
// 3D variant
if (prop['chart.variant'].indexOf('3d') !== -1) {
var scaleX = 1.5;
this.context.setTransform(
scaleX,
0,
0,
1,
(ca.width * scaleX - ca.width) * -0.5,
0
);
}
this.drawBackground();
// If a 3D variant draw the depth
if (prop['chart.variant'].indexOf('3d') !== -1) {
RG.setShadow(this,'rgba(0,0,0,0.35)',0,15,25);
for (var i=prop['chart.variant.threed.depth']; i>0; i-=1) {
this.centery -= 1;
this.drawRose({storeAngles: false});
RG.setShadow(this,'rgba(0,0,0,0)',0,0,0);
// Make the segments darker
for (var j=0,len=this.angles.length; j<len; j+=1) {
var a = this.angles[j];
pa2(co, [
'b',
'm', a[4], a[5],
'a', a[4], a[5], a[3] + 1.5, a[0] - 0.01, a[1] + 0.01, false,
'c',
'f', 'rgba(0,0,0,0.1)'
]);
}
}
}
this.drawRose();
this.drawLabels();
/**
* Set the strokestyle to transparent because of a strange double stroke bug
*
* DO NOT REMOVE
*/
co.strokeStyle = 'rgba(0,0,0,0)'
/**
* Setup the context menu if required
*/
if (prop['chart.contextmenu']) {
RG.ShowContext(this);
}
/**
* This function enables resizing
*/
if (prop['chart.resizable']) {
RG.AllowResizing(this);
}
/**
* This function enables adjusting
*/
if (prop['chart.adjustable']) {
RG.AllowAdjusting(this);
}
/**
* This installs the event listeners
*/
RG.InstallEventListeners(this);
//
// Allow the segments to be highlighted
//
if (prop['chart.segment.highlight']) {
// Check to see if the dynamic library has been included
if (!RG.allowSegmentHighlight) {
alert('[WARNING] The segment highlight function does not exist - have you included the dynamic library?');
}
RG.allowSegmentHighlight({
object: this,
count: typeof prop['chart.segment.highlight.count'] === 'number' ? prop['chart.segment.highlight.count'] : this.data.length,
fill: prop['chart.segment.highlight.fill'],
stroke: prop['chart.segment.highlight.stroke']
});
}
/**
* Fire the onfirstdraw event
*/
if (this.firstDraw) {
this.firstDraw = false;
RG.fireCustomEvent(this, 'onfirstdraw');
this.firstDrawFunc();
}
/**
* Fire the RGraph ondraw event
*/
RG.FireCustomEvent(this, 'ondraw');
return this;
};
/**
* This method draws the rose charts background
*/
this.drawBackground =
this.DrawBackground = function ()
{
co.lineWidth = 1;
// Draw the background grey circles/spokes
if (prop['chart.background.grid']) {
if (typeof(prop['chart.background.grid.count']) == 'number') {
prop['chart.background.grid.size'] = this.radius / prop['chart.background.grid.count'];
}
co.beginPath();
co.strokeStyle = prop['chart.background.grid.color'];
// Radius must be greater than 0 for Opera to work
for (var i=prop['chart.background.grid.size']; i<=this.radius; i+=prop['chart.background.grid.size']) {
// Hmmm... This is questionable
co.moveTo(this.centerx + i, this.centery);
// Radius must be greater than 0 for Opera to work
co.arc(this.centerx,
this.centery,
i,
0,
RG.TWOPI,
false);
}
co.stroke();
// Draw the background lines that go from the center outwards
co.beginPath();
if (typeof prop['chart.background.grid.radials'] !== 'number') {
prop['chart.background.grid.radials'] = this.data.length
}
var num = (360 / prop['chart.background.grid.radials']);
for (var i=num; i<=360; i+=num) {
// Radius must be greater than 0 for Opera to work
co.arc(this.centerx,
this.centery,
this.radius,
((i / (180 / RG.PI)) - RG.HALFPI) + this.startRadians,
(((i + 0.0001) / (180 / RG.PI)) - RG.HALFPI) + this.startRadians,
false);
co.lineTo(this.centerx, this.centery);
}
co.stroke();
}
if (prop['chart.background.axes']) {
co.beginPath();
co.strokeStyle = prop['chart.background.axes.color'];
// Draw the X axis
co.moveTo(this.centerx - this.radius, ma.round(this.centery) );
co.lineTo(this.centerx + this.radius, ma.round(this.centery) );
// Draw the X ends
co.moveTo(ma.round(this.centerx - this.radius), this.centery - 5);
co.lineTo(ma.round(this.centerx - this.radius), this.centery + 5);
co.moveTo(ma.round(this.centerx + this.radius), this.centery - 5);
co.lineTo(ma.round(this.centerx + this.radius), this.centery + 5);
// Draw the X check marks
for (var i=(this.centerx - this.radius); i<(this.centerx + this.radius); i+=(this.radius / 5)) {
co.moveTo(ma.round(i), this.centery - 3);
co.lineTo(ma.round(i), this.centery + 3.5);
}
// Draw the Y check marks
for (var i=(this.centery - this.radius); i<(this.centery + this.radius); i+=(this.radius / 5)) {
co.moveTo(this.centerx - 3, ma.round(i));
co.lineTo(this.centerx + 3, ma.round(i));
}
// Draw the Y axis
co.moveTo(ma.round(this.centerx), this.centery - this.radius);
co.lineTo(ma.round(this.centerx), this.centery + this.radius);
// Draw the Y ends
co.moveTo(this.centerx - 5, ma.round(this.centery - this.radius));
co.lineTo(this.centerx + 5, ma.round(this.centery - this.radius));
co.moveTo(this.centerx - 5, ma.round(this.centery + this.radius));
co.lineTo(this.centerx + 5, ma.round(this.centery + this.radius));
// Stroke it
co.closePath();
co.stroke();
}
pa2(co, 'b c');
};
/**
* This method draws the data on the graph
*/
this.drawRose =
this.DrawRose = function ()
{
var max = 0,
data = this.data,
margin = RG.degrees2Radians(prop['chart.margin']),
opt = arguments[0] || {};
co.lineWidth = prop['chart.linewidth'];
// Work out the maximum value and the sum
if (RG.isNull(prop['chart.ymax'])) {
// Work out the max
for (var i=0; i<data.length; ++i) {
if (typeof data[i] == 'number') {
max = ma.max(max, data[i]);
} else if (typeof data[i] == 'object' && prop['chart.variant'].indexOf('non-equi-angular') !== -1) {
max = ma.max(max, data[i][0]);
// Fallback is stacked
} else {
max = ma.max(max, RG.arraySum(data[i]));
}
}
this.scale2 = RG.getScale2(this, {
'max':max,
'min':0,
'scale.thousand':prop['chart.scale.thousand'],
'scale.point':prop['chart.scale.point'],
'scale.decimals':prop['chart.scale.decimals'],
'ylabels.count':prop['chart.labels.count'],
'scale.round':prop['chart.scale.round'],
'units.pre': prop['chart.units.pre'],
'units.post': prop['chart.units.post']
});
this.max = this.scale2.max;
} else {
var ymax = prop['chart.ymax'];
this.scale2 = RG.getScale2(this, {
'max':ymax,
'strict':true,
'scale.thousand':prop['chart.scale.thousand'],
'scale.point':prop['chart.scale.point'],
'scale.decimals':prop['chart.scale.decimals'],
'ylabels.count':prop['chart.labels.count'],
'scale.round':prop['chart.scale.round'],
'units.pre': prop['chart.units.pre'],
'units.post': prop['chart.units.post']
});
this.max = this.scale2.max
}
this.sum = RG.arraySum(data);
// Move to the centre
co.moveTo(this.centerx, this.centery);
co.stroke(); // Stroke the background so it stays grey
// Transparency
if (prop['chart.colors.alpha']) {
co.globalAlpha = prop['chart.colors.alpha'];
}
var sequentialIndex = 0;
/*******************************************************
* A non-equi-angular Rose chart
*******************************************************/
if (typeof(prop['chart.variant']) == 'string' && prop['chart.variant'].indexOf('non-equi-angular') !== -1) {
var total=0;
for (var i=0; i<data.length; ++i) {
total += data[i][1];
}
if (prop['chart.shadow']) {
RG.setShadow(
this,
prop['chart.shadow.color'],
prop['chart.shadow.offsetx'],
prop['chart.shadow.offsety'],
prop['chart.shadow.blur']
);
}
for (var i=0; i<this.data.length; ++i) {
var segmentRadians = ((this.data[i][1] / total) * RG.TWOPI);
var radius = ((this.data[i][0] - prop['chart.ymin']) / (this.max - prop['chart.ymin'])) * this.radius;
radius = radius * prop['chart.animation.grow.multiplier'];
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][0];
if (prop['chart.colors.sequential']) {
co.fillStyle = prop['chart.colors'][i];
}
co.beginPath(); // Begin the segment
var startAngle = (this.startRadians * prop['chart.animation.roundrobin.factor']) - RG.HALFPI + margin;
var endAngle = ((this.startRadians + segmentRadians) * prop['chart.animation.roundrobin.factor']) - RG.HALFPI - margin;
var exploded = this.getexploded(i, startAngle, endAngle, prop['chart.exploded']);
var explodedX = exploded[0];
var explodedY = exploded[1];
co.arc(
this.centerx + explodedX,
this.centery + explodedY,
prop['chart.animation.roundrobin.radius'] ? radius * prop['chart.animation.roundrobin.factor'] : radius,
startAngle,
endAngle,
0
);
co.lineTo(this.centerx + explodedX, this.centery + explodedY);
co.closePath(); // End the segment
co.stroke();
co.fill();
// Store the start and end angles
this.angles[i] = [
startAngle,
endAngle,
0,
prop['chart.animation.roundrobin.radius'] ? radius * prop['chart.animation.roundrobin.factor'] : radius,
this.centerx + explodedX,
this.centery + explodedY,
co.strokeStyle,
co.fillStyle
];
sequentialIndex++;
this.startRadians += segmentRadians;
}
// Turn the shadow off it its enabled and redraw the chart
if (prop['chart.shadow']) {
RG.noShadow(this);
this.redrawRose();
}
} else {
var sequentialColorIndex = 0;
if (prop['chart.shadow']) {
RG.setShadow(
this,
prop['chart.shadow.color'],
prop['chart.shadow.offsetx'],
prop['chart.shadow.offsety'],
prop['chart.shadow.blur']
);
}
/*******************************************************
* Draw regular segments here
*******************************************************/
for (var i=0; i<this.data.length; ++i) {
var segmentRadians = (1 / this.data.length) * RG.TWOPI;
if (typeof this.data[i] == 'number') {
co.beginPath(); // Begin the segment
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][0];
/*******************************************************
* This allows sequential colors
*******************************************************/
if (prop['chart.colors.sequential']) {
co.fillStyle = prop['chart.colors'][i];
}
var radius = ((this.data[i] - prop['chart.ymin']) / (this.max - prop['chart.ymin'])) * this.radius;
radius = radius * prop['chart.animation.grow.multiplier'];
var startAngle = (this.startRadians * prop['chart.animation.roundrobin.factor']) - RG.HALFPI + margin;
var endAngle = (this.startRadians * prop['chart.animation.roundrobin.factor']) + (segmentRadians * prop['chart.animation.roundrobin.factor']) - RG.HALFPI - margin;
var exploded = this.getexploded(i, startAngle, endAngle, prop['chart.exploded']);
var explodedX = exploded[0];
var explodedY = exploded[1];
co.arc(
this.centerx + explodedX,
this.centery + explodedY,
prop['chart.animation.roundrobin.radius'] ? radius * prop['chart.animation.roundrobin.factor'] : radius,
startAngle,
endAngle,
0
);
co.lineTo(this.centerx + explodedX, this.centery + explodedY);
co.closePath(); // End the segment
co.stroke();
co.fill();
// This skirts a double-stroke bug
co.beginPath();
if (endAngle == 0) {
//endAngle = RG.TWOPI;
}
// Store the start and end angles
this.angles[i] = [
startAngle,
endAngle,
0,
radius * prop['chart.animation.roundrobin.factor'],
this.centerx + explodedX,
this.centery + explodedY,
co.strokeStyle,
co.fillStyle
];
sequentialIndex++;
/*******************************************************
* Draw a stacked segment
*******************************************************/
} else if (typeof(this.data[i]) == 'object') {
var margin = prop['chart.margin'] / (180 / RG.PI);
// Initialise the angles2 array
if (!this.angles2[i]) {
this.angles2[i] = [];
}
for (var j=0; j<this.data[i].length; ++j) {
var startAngle = (this.startRadians * prop['chart.animation.roundrobin.factor']) - RG.HALFPI + margin;
var endAngle = (this.startRadians * prop['chart.animation.roundrobin.factor'])+ (segmentRadians * prop['chart.animation.roundrobin.factor']) - RG.HALFPI - margin;
var exploded = this.getexploded(i, startAngle, endAngle, prop['chart.exploded']);
var explodedX = exploded[0];
var explodedY = exploded[1];
co.strokeStyle = prop['chart.strokestyle'];
co.fillStyle = prop['chart.colors'][j];
// This facilitates sequential color support
if (prop['chart.colors.sequential']) {
co.fillStyle = prop['chart.colors'][sequentialColorIndex++];
}
if (j == 0) {
co.beginPath(); // Begin the segment
var startRadius = 0;
var endRadius = ((this.data[i][j] - prop['chart.ymin']) / (this.max - prop['chart.ymin'])) * this.radius;
endRadius = endRadius * prop['chart.animation.grow.multiplier'];
co.arc(this.centerx + explodedX,
this.centery + explodedY,
prop['chart.animation.roundrobin.radius'] ? endRadius * prop['chart.animation.roundrobin.factor'] : endRadius,
startAngle,
endAngle,
0);
co.lineTo(this.centerx + explodedX, this.centery + explodedY);
co.closePath(); // End the segment
co.stroke();
co.fill();
this.angles[sequentialIndex++] = [
startAngle,
endAngle,
0,
endRadius * prop['chart.animation.roundrobin.factor'],
this.centerx + explodedX,
this.centery + explodedY,
co.strokeStyle,
co.fillStyle
];
this.angles2[i][j] = [
startAngle,
endAngle,
0,
endRadius * prop['chart.animation.roundrobin.factor'],
this.centerx + explodedX,
this.centery + explodedY,
co.strokeStyle,
co.fillStyle
];
} else {
co.beginPath(); // Begin the segment
var startRadius = endRadius; // This comes from the prior iteration of this loop
var endRadius = (((this.data[i][j] - prop['chart.ymin']) / (this.max - prop['chart.ymin'])) * this.radius) + startRadius;
endRadius = endRadius * prop['chart.animation.grow.multiplier'];
co.arc(this.centerx + explodedX,
this.centery + explodedY,
startRadius * prop['chart.animation.roundrobin.factor'],
startAngle,
endAngle,
0);
co.arc(this.centerx + explodedX,
this.centery + explodedY,
endRadius * prop['chart.animation.roundrobin.factor'],
endAngle,
startAngle,
true);
co.closePath(); // End the segment
co.stroke();
co.fill();
this.angles[sequentialIndex++] = [
startAngle,
endAngle,
startRadius * prop['chart.animation.roundrobin.factor'],
endRadius * prop['chart.animation.roundrobin.factor'],
this.centerx + explodedX,
this.centery + explodedY,
co.strokeStyle,
co.fillStyle
];
this.angles2[i][j] = [
startAngle,
endAngle,
startRadius * prop['chart.animation.roundrobin.factor'],
endRadius * prop['chart.animation.roundrobin.factor'],
this.centerx + explodedX,
this.centery + explodedY,
co.strokeStyle,
co.fillStyle
];
}
}
}
this.startRadians += segmentRadians;
}
if (prop['chart.shadow']) {
RG.noShadow(this);
}
//
// Now redraw the rose if the shadow is enabled so that
// the rose appears over the shadow
//
if (prop['chart.shadow']) {
this.redrawRose();
}
}
// Turn off the transparency
if (prop['chart.colors.alpha']) {
co.globalAlpha = 1;
}
// Draw the title if any has been set
if (prop['chart.title']) {
RG.drawTitle(
this,
prop['chart.title'],
(ca.height / 2) - this.radius,
this.centerx,
prop['chart.title.size'] ? prop['chart.title.size'] : prop['chart.text.size'] + 2
);
}
};
//
// This function redraws the rose if the shadow is enabled so the it
// appears above the shadow
//
this.redrawRose = function ()
{
var angles = this.angles;
for (var i=0; i<angles.length; ++i) {
pa2(
co,
'b a % % % % % false a % % % % % true c f % f % ',
angles[i][4], // x
angles[i][5], // y
angles[i][2], // radius
angles[i][0], // start angle
angles[i][1], // end angle
angles[i][4], // x
angles[i][5], // y
angles[i][3], // radius
angles[i][1], // end angle
angles[i][0], // start angle
angles[i][6], // strokestyle
angles[i][7] // fillstyle
);
}
};
/**
* Unsuprisingly, draws the labels
*/
this.drawLabels =
this.DrawLabels = function ()
{
co.lineWidth = 1;
var key = prop['chart.key'];
if (key && key.length) {
RG.DrawKey(this, key, prop['chart.colors']);
}
// Set the color to black
co.fillStyle = prop['chart.text.color'];
co.strokeStyle = 'black';
var radius = this.radius,
font = prop['chart.text.font'],
size = prop['chart.text.size'],
axes = prop['chart.labels.axes'].toLowerCase(),
decimals = prop['chart.scale.decimals'],
units_pre = prop['chart.units.pre'],
units_post = prop['chart.units.post'],
centerx = this.centerx,
centery = this.centery + (prop['chart.variant'].indexOf('3d') !== -1 ? prop['chart.variant.threed.depth'] : 0);
// Draw any circular labels
if (typeof prop['chart.labels'] == 'object' && prop['chart.labels']) {
this.DrawCircularLabels(co, prop['chart.labels'], font, size, radius + 10);
}
// Size can be specified seperately for the scale now
if (typeof(prop['chart.text.size.scale']) == 'number') {
size = prop['chart.text.size.scale'];
}
var color = 'rgba(255,255,255,0.8)';
// The "North" axis labels
if (axes.indexOf('n') > -1) {
for (var i=0; i<prop['chart.labels.count']; ++i) {
RG.text2(this, {
'font':font,
'size':size,
'x':centerx - 10,
'y':centery - (radius * ((i+1) / prop['chart.labels.count'])),
'text':this.scale2.labels[i],
'valign':'center',
'halign':'right',
'bounding':true,
'bounding.fill':color,
'bounding.stroke':prop['chart.labels.boxed'] ? 'black' : 'rgba(0,0,0,0)',
'tag': 'scale'
});
}
}
// The "South" axis labels
if (axes.indexOf('s') > -1) {
for (var i=0; i<prop['chart.labels.count']; ++i) {
RG.Text2(this, {
'font':font,
'size':size,
'x':centerx - 10,
'y':centery + (radius * ((i+1) / prop['chart.labels.count'])),
'text':this.scale2.labels[i],
'valign':'center',
'halign':'right',
'bounding':true,
'bounding.fill':color,
'bounding.stroke':prop['chart.labels.boxed'] ? 'black' : 'rgba(0,0,0,0)',
'tag': 'scale'
});
}
}
// The "East" axis labels
if (axes.indexOf('e') > -1) {
for (var i=0; i<prop['chart.labels.count']; ++i) {
RG.Text2(this, {
'font':font,
'size':size,
'x':centerx + (radius * ((i+1) / prop['chart.labels.count'])),
'y':centery + 10,
'text':this.scale2.labels[i],
'valign':'top',
'halign':'center',
'bounding':true,
'bounding.fill':color,
'bounding.stroke':prop['chart.labels.boxed'] ? 'black' : 'rgba(0,0,0,0)',
'tag': 'scale'
});
}
}
// The "West" axis labels
if (axes.indexOf('w') > -1) {
for (var i=0; i<prop['chart.labels.count']; ++i) {
RG.Text2(this, {
'font':font,
'size':size,
'x':centerx - (radius * ((i+1) / prop['chart.labels.count'])),
'y':centery + 10,
'text':this.scale2.labels[i],
'valign':'top',
'halign':'center',
'bounding':true,
'bounding.fill':color,
'bounding.stroke':prop['chart.labels.boxed'] ? 'black' : 'rgba(0,0,0,0)',
'tag': 'scale'
});
}
}
// Draw the minimum value
if (RG.trim(axes).length > 0) {
RG.Text2(this, {
'font':font,
'size':size,
'x':centerx,
'y':centery,
'text':typeof prop['chart.ymin'] === 'number' ? RG.numberFormat(this, Number(prop['chart.ymin']).toFixed(prop['chart.ymin'] === 0 ? '0' : prop['chart.scale.decimals']), units_pre, units_post) : '0',
'valign':'center',
'halign':'center',
'bounding':true,
'bounding.fill':color,
'bounding.stroke':prop['chart.labels.boxed'] ? 'black' : 'rgba(0,0,0,0)',
'tag': 'scale'
});
}
};
/**
* Draws the circular labels that go around the charts
*
* @param labels array The labels that go around the chart
*/
this.drawCircularLabels =
this.DrawCircularLabels = function (co, labels, font, size, radius)
{
var variant = prop['chart.variant'],
position = prop['chart.labels.position'],
radius = radius + 5 + prop['chart.labels.offset'],
centerx = this.centerx,
centery = this.centery + (prop['chart.variant'].indexOf('3d') !== -1 ? prop['chart.variant.threed.depth'] : 0),
labelsColor = prop['chart.labels.color'] || prop['chart.text.color'],
angles = this.angles
for (var i=0; i<this.data.length; ++i) {
if (typeof(variant) == 'string' && variant.indexOf('non-equi-angular') !== -1) {
var a = Number(angles[i][0]) + ((angles[i][1] - angles[i][0]) / 2);
} else {
var a = (RG.TWOPI / this.data.length) * (i + 1) - (RG.TWOPI / (this.data.length * 2));
var a = a - RG.HALFPI + (prop['chart.labels.position'] == 'edge' ? ((RG.TWOPI / this.data.length) / 2) : 0);
}
var x = centerx + (ma.cos(a) * radius);
var y = centery + (ma.sin(a) * radius);
// Horizontal alignment
if (x > centerx) {
halign = 'left';
} else if (Math.round(x) == centerx) {
halign = 'center';
} else {
halign = 'right';
}
RG.text2(this, {
'color': labelsColor,
'font':font,
'size':size,
'x':x,
'y':y,
'text':String(labels[i]),
'halign':halign,
'valign':'center',
'tag': 'labels'
});
}
};
/**
* This function is for use with circular graph types, eg the Pie or Rose. Pass it your event object
* and it will pass you back the corresponding segment details as an array:
*
* [x, y, r, startAngle, endAngle]
*
* Angles are measured in degrees, and are measured from the "east" axis (just like the canvas).
*
* @param object e Your event object
* @param object Options (OPTIONAL):
* radius - whether to take into account
* the radius of the segment
*/
this.getShape =
this.getSegment = function (e)
{
RG.fixEventObject(e);
var angles = this.angles;
var ret = [];
var opt = arguments[1] ? arguments[1] : {radius: true};
/**
* Go through all of the angles checking each one
*/
for (var i=0; i<angles.length ; ++i) {
var angleStart = angles[i][0];
var angleEnd = angles[i][1];
var radiusStart = opt.radius === false ? 0 : angles[i][2];
var radiusEnd = opt.radius === false ? this.radius : angles[i][3];
var centerX = angles[i][4];
var centerY = angles[i][5];// - (prop['chart.variant'].indexOf('3d') !== -1 ? prop['chart.variant.threed.depth'] : 0);
var mouseXY = RG.getMouseXY(e);
var mouseX = mouseXY[0] - centerX;
var mouseY = mouseXY[1] - centerY;
// New click testing (the 0.01 is there because Opera doesn't like 0 as the radius)
co.beginPath();
co.arc(centerX, centerY, radiusStart ? radiusStart : 0.01, angleStart, angleEnd, false);
co.arc(centerX, centerY, radiusEnd, angleEnd, angleStart, true);
co.closePath();
// No stroke() or fill()
if (co.isPointInPath(mouseXY[0], mouseXY[1])) {
angles[i][6] = i;
if (RG.parseTooltipText) {
var tooltip = RG.parseTooltipText(prop['chart.tooltips'], angles[i][6]);
}
// Add the textual keys
angles[i]['object'] = this;
angles[i]['x'] = angles[i][4];
angles[i]['y'] = angles[i][5];
angles[i]['angle.start'] = angles[i][0];
angles[i]['angle.end'] = angles[i][1];
angles[i]['radius.start'] = angles[i][2];
angles[i]['radius.end'] = angles[i][3];
angles[i]['index'] = angles[i][6];
angles[i]['tooltip'] = tooltip ? tooltip : null;
return angles[i];
}
}
return null;
};
/**
* Returns any exploded for a particular segment
*/
this.getExploded =
this.getexploded = function (index, startAngle, endAngle, exploded)
{
var explodedx, explodedy;
/**
* Retrieve any exploded - the exploded can be an array of numbers or a single number
* (which is applied to all segments)
*/
if (typeof(exploded) == 'object' && typeof(exploded[index]) == 'number') {
explodedx = Math.cos(((endAngle - startAngle) / 2) + startAngle) * exploded[index];
explodedy = Math.sin(((endAngle - startAngle) / 2) + startAngle) * exploded[index];
} else if (typeof(exploded) == 'number') {
explodedx = Math.cos(((endAngle - startAngle) / 2) + startAngle) * exploded;
explodedy = Math.sin(((endAngle - startAngle) / 2) + startAngle) * exploded;
} else {
explodedx = 0;
explodedy = 0;
}
return [explodedx, explodedy];
};
/**
* This function facilitates the installation of tooltip event listeners if
* tooltips are defined.
*/
this.allowTooltips =
this.AllowTooltips = function ()
{
// Preload any tooltip images that are used in the tooltips
RG.PreLoadTooltipImages(this);
/**
* This installs the window mousedown event listener that lears any
* highlight that may be visible.
*/
RG.InstallWindowMousedownTooltipListener(this);
/**
* This installs the canvas mousemove event listener. This function
* controls the pointer shape.
*/
RG.InstallCanvasMousemoveTooltipListener(this);
/**
* This installs the canvas mouseup event listener. This is the
* function that actually shows the appropriate tooltip (if any).
*/
RG.InstallCanvasMouseupTooltipListener(this);
};
/**
* 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)
{
if (prop['chart.tooltips.highlight']) {
if (typeof prop['chart.highlight.style'] === 'function'){
(prop['chart.highlight.style'])(shape);
return;
}
// Add the new segment highlight
co.beginPath();
co.strokeStyle = prop['chart.highlight.stroke'];
co.fillStyle = prop['chart.highlight.fill'];
co.arc(
shape['x'],
shape['y'],//- (prop['chart.variant'].indexOf('3d') !== -1 ? prop['chart.variant.threed.depth'] : 0),
shape['radius.end'],
shape['angle.start'],
shape['angle.end'],
false
);
if (shape['radius.start'] > 0) {
co.arc(
shape['x'],
shape['y'],
shape['radius.start'],
shape['angle.end'],
shape['angle.start'],
true
);
} else {
co.lineTo(
shape['x'],
shape['y']
);
}
co.closePath();
co.stroke();
co.fill();
}
};
/**
* The getObjectByXY() worker method. Don't call this call:
*
* RGraph.ObjectRegistry.getObjectByXY(e)
*
* @param object e The event object
*/
this.getObjectByXY = function (e)
{
var mouseXY = RGraph.getMouseXY(e);
// Work out the radius
var radius = RG.getHypLength(this.centerx, this.centery, mouseXY[0], mouseXY[1]);
// Account for the 3D stretching effect
if (prop['chart.variant'].indexOf('3d') !== -1) {
radius /= -1;
}
if (
mouseXY[0] > (this.centerx - this.radius)
&& mouseXY[0] < (this.centerx + this.radius)
&& mouseXY[1] > (this.centery - this.radius)
&& mouseXY[1] < (this.centery + this.radius)
&& radius <= this.radius
) {
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 centerX = this.angles[idx][4],
centerY = this.angles[idx][5] - (prop['chart.variant'].indexOf('3d') !== -1 ? prop['chart.variant.threed.depth'] : 0),
radiusStart = this.angles[idx][2],
radiusEnd = this.angles[idx][3],
coordX = this.angles[idx][4],
coordY = this.angles[idx][5] - (prop['chart.variant'].indexOf('3d') !== -1 ? prop['chart.variant.threed.depth'] : 0),
angleStart = this.angles[idx][0],
angleEnd = this.angles[idx][1],
radius = ((radiusEnd - radiusStart) / 2) + radiusStart,
angleCenter = ((angleEnd - angleStart) / 2) + angleStart,
canvasXY = RG.getCanvasXY(this.canvas),
mouseXY = RG.getMouseXY(window.event),
gutterLeft = this.gutterLeft,
gutterTop = this.gutterTop,
width = tooltip.offsetWidth,
height = tooltip.offsetHeight
// Set the top position
tooltip.style.left = 0;
tooltip.style.top = window.event.pageY - height - 5 + 'px';
// By default any overflow is hidden
tooltip.style.overflow = '';
// Reposition the tooltip if at the edges:
// LEFT edge
if (canvasXY[0] + mouseXY[0] - (width / 2) < 0) {
tooltip.style.left = canvasXY[0] + mouseXY[0] - (width * 0.1) + 'px';
// RIGHT edge
} else if (canvasXY[0] + mouseXY[0] + (width / 2) > doc.body.offsetWidth) {
tooltip.style.left = canvasXY[0] + mouseXY[0] - (width * 0.9) + 'px';
// Default positioning - CENTERED
} else {
tooltip.style.left = canvasXY[0] + mouseXY[0] - (width / 2) + 'px';
}
};*/
/**
* This method gives you the relevant radius for a particular value
*
* @param number value The relevant value to get the radius for
*/
this.getRadius = function (value)
{
// Range checking (the Rose minimum is always 0)
if (value < 0 || value > this.max) {
return null;
}
var r = (value / this.max) * this.radius;
return r;
};
/**
* 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'] = RG.array_clone(prop['chart.colors']);
this.original_colors['chart.key.colors'] = RG.array_clone(prop['chart.key.colors']);
this.original_colors['chart.text.color'] = RG.array_clone(prop['chart.text.color']);
this.original_colors['chart.title.color'] = RG.array_clone(prop['chart.title.color']);
this.original_colors['chart.highlight.stroke'] = RG.array_clone(prop['chart.highlight.stroke']);
this.original_colors['chart.highlight.fill'] = RG.array_clone(prop['chart.highlight.fill']);
}
for (var i=0; i<prop['chart.colors'].length; ++i) {
prop['chart.colors'][i] = this.parseSingleColorForGradient(prop['chart.colors'][i]);
}
/**
* Key colors
*/
if (!RG.is_null(prop['chart.key.colors'])) {
for (var i=0; i<prop['chart.key.colors'].length; ++i) {
prop['chart.key.colors'][i] = this.parseSingleColorForGradient(prop['chart.key.colors'][i]);
}
}
prop['chart.text.color'] = this.parseSingleColorForGradient(prop['chart.text.color']);
prop['chart.title.color'] = this.parseSingleColorForGradient(prop['chart.title.color']);
prop['chart.highlight.fill'] = this.parseSingleColorForGradient(prop['chart.highlight.fill']);
prop['chart.highlight.stroke'] = this.parseSingleColorForGradient(prop['chart.highlight.stroke']);
prop['chart.segment.highlight.stroke'] = this.parseSingleColorForGradient(prop['chart.segment.highlight.stroke']);
prop['chart.segment.highlight.fill'] = this.parseSingleColorForGradient(prop['chart.segment.highlight.fill']);
};
/**
* 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 = context.createLinearGradient(0,0,canvas.width,0);
var grad = co.createRadialGradient(this.centerx, this.centery, 0, this.centerx, this.centery, this.radius);
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 segments = this.angles2;
for (var i=0; i<this.angles2.length; i+=1) {
co.beginPath();
co.lineWidth = 2;
co.fillStyle = prop['chart.key.interactive.highlight.chart.fill'];
co.strokeStyle = prop['chart.key.interactive.highlight.chart.stroke'];
co.arc(segments[i][index][4], segments[i][index][5], segments[i][index][2], segments[i][index][0], segments[i][index][1], false);
co.arc(segments[i][index][4], segments[i][index][5], segments[i][index][3], segments[i][index][1], segments[i][index][0], true);
co.closePath();
co.fill();
co.stroke();
}
return/*
if (segments) {
for (var i=0; i<segments.length; i+=1) {
}
}
*/
};
/**
* 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;
}
if (typeof this[type] !== 'function') {
this[type] = func;
} else {
RG.addCustomEventListener(this, type, func);
}
return this;
};
/**
* This function runs once only
* (put at the end of the file (before any effects))
*/
this.firstDrawFunc = function ()
{
};
/**
* Rose chart explode
*
* Explodes the Rose chart - gradually incrementing the size of the chart.explode property
*
* @param object Optional options for the effect. You can pass in frames here - such as:
* myRose.roundRobin({frames: 60}; function () {alert('Done!');})
* @param function A callback function which is called when the effect is finished
*/
this.explode = function ()
{
var obj = this;
var opt = arguments[0] || {};
var callback = arguments[1] || function (){};
var frames = opt.frames ? opt.frames : 30;
var frame = 0;
var explodedMax = ma.max(ca.width, ca.height);
var exploded = Number(this.Get('exploded'));
function iterator ()
{
exploded = (frame / frames) * explodedMax;
// Set the new value
obj.Set('exploded', exploded);
RG.clear(ca);
RG.redrawCanvas(ca);
if (frame++ < frames) {
RG.Effects.updateCanvas(iterator);
} else {
callback(obj);
}
}
iterator();
return this;
};
/**
* RoundRobin
*
* This effect is similar to the Pie chart RoundRobin effect
*
* @param object Optional options for the effect. You can pass in frames here - such as:
* myRose.roundRobin({frames: 60}; function () {alert('Done!');})
* @param function A callback function which is called when the effect is finished
*/
this.roundrobin =
this.roundRobin = function ()
{
var obj = this;
var opt = arguments[0] || {}
var frames = opt.frames || 30;
var frame = 0;
var original_margin = prop['chart.margin'];
var margin = (360 / this.data.length) / 2;
var callback = arguments[1] || function () {};
this.Set('chart.margin', margin);
this.Set('chart.animation.roundrobin.factor', 0);
function iterator ()
{
RG.clear(obj.canvas);
RG.redrawCanvas(obj.canvas);
if (frame++ < frames) {
obj.set('animation.roundrobin.factor', frame / frames);
obj.set('margin', (frame / frames) * original_margin);
RG.Effects.updateCanvas(iterator);
} else {
obj.set('animation.roundrobin.factor', 1);
obj.set('margin', original_margin);
callback(obj);
}
}
iterator();
return this;
};
/**
* Rose chart implode
*
* Implodes the Rose chart - gradually decreasing the size of the chart.explode property. It starts at the largest of
* the canvas width./height
*
* @param object Optional options for the effect. You can pass in frames here - such as:
* myRose.implode({frames: 60}; function () {alert('Done!');})
* @param function A callback function which is called when the effect is finished
*/
this.implode = function ()
{
var obj = this;
var opt = arguments[0] || {};
var callback = arguments[1] || function (){};
var frames = opt.frames || 30;
var frame = 0;
var explodedMax = ma.max(ca.width, ca.height);
var exploded = explodedMax;
function iterator ()
{
exploded = explodedMax - ((frame / frames) * explodedMax);
// Set the new value
obj.Set('exploded', exploded);
RG.clear(ca);
RG.redrawCanvas(ca);
if (frame++ < frames) {
RG.Effects.updateCanvas(iterator);
} else {
RG.clear(obj.canvas);
RG.redrawCanvas(obj.canvas);
callback(obj);
}
}
iterator();
return this;
};
/**
* Rose chart Grow
*
* This effect gradually increases the size of the Rose chart
*
* @param object Optional options for the effect. You can pass in frames here - such as:
* myRose.grow({frames: 60}; function () {alert('Done!');})
* @param function A callback function which is called when the effect is finished
*/
this.grow = function ()
{
var obj = this;
var opt = arguments[0] || {};
var callback = arguments[1] || function (){};
var frames = opt.frames || 30;
var frame = 0;
function iterator ()
{
obj.Set('animation.grow.multiplier', frame / frames);
RG.clear(ca);
RG.redrawCanvas(ca);
if (frame < frames) {
frame++;
RG.Effects.updateCanvas(iterator);
} else {
callback(obj);
}
}
iterator();
return this;
};
/**
* Register this object
*/
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);
}
};