// o---------------------------------------------------------------------------------o
// | This file is part of the RGraph package - you can learn more at: |
// | |
// | https://www.rgraph.net/license.html |
// | |
// | RGraph is dual-licensed under the Open Source GPL license. That means that it's |
// | free to use and there are no restrictions on what you can use RGraph for! |
// | If the GPL license does not suit you however, then there's an inexpensive |
// | commercial license option available. See the URL above for more details. |
// o---------------------------------------------------------------------------------o
RGraph = window.RGraph || {isrgraph:true,isRGraph:true,rgraph:true};
//
// The bar chart constructor
//
RGraph.Funnel = function (conf)
{
var id = conf.id;
var canvas = document.getElementById(id);
var data = conf.data;
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.type = 'funnel';
this.coords = [];
this.isRGraph = true;
this.isrgraph = true;
this.rgraph = true;
this.uid = RGraph.createUID();
this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.createUID();
this.coordsText = [];
this.original_colors = [];
this.firstDraw = true; // After the first draw this will be false
// Check for support
if (!this.canvas) {
alert('[FUNNEL] No canvas support');
return;
}
//
// The funnel charts properties
//
this.properties =
{
backgroundBars: false,
backgroundBarsOpacity: 0.25,
backgroundBarsColors: null,
colorsStroke: 'rgba(0,0,0,0)',
colors: ['red','green','gray','black','pink','orange','blue','yellow','green','red'],
marginLeft: 35,
marginRight: 35,
marginTop: 35,
marginBottom: 35,
labels: null,
labelsFont: null,
labelsSize: null,
labelsColor: null,
labelsBold: null,
labelsItalic: null,
labelsSticks: false,
labelsX: null,
labelsPosition: 'edge',
labelsOffsetx: 0,
labelsOffsety: 0,
labelsBackground: 'rgba(255,255,255,0.7)',
labelsFormattedDecimals: 0,
labelsFormattedPoint: '.',
labelsFormattedThousand: ',',
labelsFormattedUnitsPre: '',
labelsFormattedUnitsPost: '',
title: '',
titleItalic: null,
titleBold: null,
titleFont: null,
titleSize: null,
titleColor: null,
titleX: null,
titleY: null,
titleHalign: null,
titleValign: null,
titleOffsetx: 0,
titleOffsety: 0,
titleSubtitle: '',
titleSubtitleSize: null,
titleSubtitleColor: '#aaa',
titleSubtitleFont: null,
titleSubtitleBold: null,
titleSubtitleItalic: null,
titleSubtitleOffsetx: 0,
titleSubtitleOffsety: 0,
textSize: 12,
textColor: 'black',
textFont: 'Arial, Verdana, sans-serif',
textBold: false,
textItalic: false,
textHalign: 'left',
textAccessible: false,
textAccessibleOverflow: 'visible',
textAccessiblePointerevents: false,
text: null,
contextmenu: null,
shadow: false,
shadowColor: '#666',
shadowBlur: 3,
shadowOffsetx: 3,
shadowOffsety: 3,
key: null,
keyBackground: 'white',
keyPosition: 'graph',
keyHalign: 'right',
keyShadow: false,
keyShadowColor: '#666',
keyShadowBlur: 3,
keyShadowOffsetx: 2,
keyShadowOffsety: 2,
keyPositionMarginBoxed: false,
keyPositionMarginHSpace: 0,
keyPositionX: null,
keyPositionY: null,
keyColorShape: 'square',
keyRounded: true,
keyLinewidth: 1,
keyColors: null,
keyInteractive: false,
keyInteractiveHighlightChartLinewidth: 2,
keyInteractiveHighlightChartStroke: 'black',
keyInteractiveHighlightChartFill: 'rgba(255,255,255,0.7)',
keyInteractiveHighlightLabel: 'rgba(255,0,0,0.2)',
keyLabelsFont: null,
keyLabelsSize: null,
keyLabelsColor: null,
keyLabelsBold: null,
keyLabelsItalic: null,
keyLabelsOffsetx: 0,
keyLabelsOffsety: 0,
keyFormattedDecimals: 0,
keyFormattedPoint: '.',
keyFormattedThousand: ',',
keyFormattedUnitsPre: '',
keyFormattedUnitsPost: '',
keyFormattedValueSpecific: null,
keyFormattedItemsCount: null,
tooltipsHighlight: true,
tooltips: null,
tooltipsEffect: 'slide',
tooltipsCssClass: 'RGraph_tooltip',
tooltipsCss: null,
tooltipsEvent: 'onclick',
tooltipsPersistent: false,
tooltipsFormattedThousand: ',',
tooltipsFormattedPoint: '.',
tooltipsFormattedDecimals: 0,
tooltipsFormattedUnitsPre: '',
tooltipsFormattedUnitsPost: '',
tooltipsFormattedKeyColors: null,
tooltipsFormattedKeyColorsShape: 'square',
tooltipsFormattedKeyLabels: [],
tooltipsFormattedListType: 'ul',
tooltipsFormattedListItems: null,
tooltipsFormattedTableHeaders: null,
tooltipsFormattedTableData: null,
tooltipsPointer: true,
tooltipsPointerOffsetx: 0,
tooltipsPointerOffsety: 0,
tooltipsPositionStatic: true,
tooltipsHotspotIgnore: null,
highlightStroke: 'rgba(0,0,0,0)',
highlightFill: 'rgba(255,255,255,0.7)',
annotatable: false,
annotatableColor: 'black',
effectGrowMultiplier: 1,
clearto: 'rgba(0,0,0,0)'
}
//
// Add the reverse look-up table for property names
// so that property names can be specified in any case.
//
this.properties_lowercase_map = [];
for (var i in this.properties) {
if (typeof i === 'string') {
this.properties_lowercase_map[i.toLowerCase()] = i;
}
}
// If the data is a string split it up
data = RGraph.stringsToNumbers(data);
this.data = data;
//
// Create the dollar objects so that functions can be added to them
//
for (var i=0; i<data.length; ++i) {
this['$' + i] = {};
}
// Easy access to properties and the path function
var properties = this.properties;
this.path = RGraph.pathObjectFunction;
//
// "Decorate" the object with the generic effects if the effects library has been included
//
if (RGraph.Effects && typeof RGraph.Effects.decorate === 'function') {
RGraph.Effects.decorate(this);
}
// Add the responsive method. This method resides in the common file.
this.responsive = RGraph.responsive;
//
// A setter
//
// @param name string The name of the property to set
// @param value mixed The value of the property
//
this.set = function (name)
{
var value = typeof arguments[1] === 'undefined' ? null : arguments[1];
// Go through all of the properties and make sure
// that they're using the correct capitalisation
if (typeof name === 'string') {
name = this.properties_lowercase_map[name.toLowerCase()] || name;
}
// Set the colorsParsed flag to false if the colors
// property is being set
if ( name === 'colors'
|| name === 'keyColors'
|| name === 'highlightFill'
|| name === 'highlightStroke'
|| name === 'colorsStroke'
) {
this.colorsParsed = false;
}
// 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') {
for (i in arguments[0]) {
if (typeof i === 'string') {
this.set(i, arguments[0][i]);
}
}
return this;
}
properties[name] = value;
return this;
};
//
// A getter
//
// @param name string The name of the property to get
//
this.get = function (name)
{
// Go through all of the properties and make sure
// that they're using the correct capitalisation
name = this.properties_lowercase_map[name.toLowerCase()] || name;
return properties[name];
};
//
// The function you call to draw the bar chart
//
this.draw = function ()
{
// Fire the onbeforedraw event
RGraph.fireCustomEvent(this, 'onbeforedraw');
//
// Install clipping
//
// MUST be the first thing that's done after the
// beforedraw event
//
if (!RGraph.isNullish(this.properties.clip)) {
RGraph.clipTo.start(this, this.properties.clip);
}
// Translate half a pixel for antialiasing purposes - but only if it hasn't been
// done already
//
// MUST be the first thing done!
//
if (!this.canvas.__rgraph_aa_translated__) {
this.context.translate(0.5,0.5);
this.canvas.__rgraph_aa_translated__ = true;
}
//
// Parse the colors. This allows for simple gradient syntax
//
if (!this.colorsParsed) {
this.parseColors();
// Don't want to do this again
this.colorsParsed = true;
}
//
// Make the margins easy ro access
//
this.marginLeft = properties.marginLeft;
this.marginRight = properties.marginRight;
this.marginTop = properties.marginTop;
this.marginBottom = properties.marginBottom;
// This stops the coords array from growing
this.coords = [];
//
// Stop this growing uncntrollably
//
this.coordsText = [];
// Draw the title using the new drawTitle() function
RGraph.drawTitle(this);
// Draw the funnel
this.drawFunnel();
//
// Setup the context menu if required
//
if (properties.contextmenu) {
RGraph.showContext(this);
}
//
// Draw the labels on the chart
//
this.drawLabels();
//
// Add custom text thats specified
//
RGraph.addCustomText(this);
//
// This installs the event listeners
//
RGraph.installEventListeners(this);
//
// End clipping
//
if (!RGraph.isNullish(this.properties.clip)) {
RGraph.clipTo.end();
}
//
// Fire the onfirstdraw event
//
if (this.firstDraw) {
this.firstDraw = false;
RGraph.fireCustomEvent(this, 'onfirstdraw');
this.firstDrawFunc();
}
//
// Fire the RGraph draw event
//
RGraph.fireCustomEvent(this, 'ondraw');
//
// Install any inline responsive configuration. This
// should be last in the draw function - even after
// the draw events.
//
RGraph.installInlineResponsive(this);
return this;
};
//
// Draws a single background bar if requested. This
// function is called by the drawFunnel() function
// once the coordinates have been calculated.
//
// @param number index The zero-indexed number of the
// segment
// @param The coordinates of the section
//
this.drawBackgroundBar = function (index, coords)
{
var color = (RGraph.isArray(properties.backgroundBarsColors) && properties.backgroundBarsColors[index])
? properties.backgroundBarsColors[index]
: properties.colors[index];
if (properties.backgroundBars && this.data[index] && color && index < (this.data.length - 1) ) {
this.path(
'b ga % r % % % % f % ga 1',
properties.backgroundBarsOpacity,
0,
coords[1],
this.canvas.width,
coords[5] - coords[3],
color
);
}
};
//
// Used in chaining. Runs a function there and then - not waiting for
// the events to fire (eg the onbeforedraw event)
//
// @param function func The function to execute
//
this.exec = function (func)
{
func(this);
return this;
};
//
// This function actually draws the chart
//
this.drawFunnel = function ()
{
var width = this.canvas.width - this.marginLeft - this.marginRight;
var height = this.canvas.height - this.marginTop - this.marginBottom;
var max = RGraph.arrayMax(this.data);
var accheight = this.marginTop;
//
// Loop through each segment to draw
//
// Set a shadow if it's been requested
if (properties.shadow) {
this.context.shadowColor = properties.shadowColor;
this.context.shadowBlur = properties.shadowBlur;
this.context.shadowOffsetX = properties.shadowOffsetx;
this.context.shadowOffsetY = properties.shadowOffsety;
}
this.context.strokeStyle = '#0000';
for (i=0,len=this.data.length; i<len; ++i) {
var firstvalue = this.data[0];
var firstwidth = (firstvalue / max) * width;
var curvalue = this.data[i];
var curwidth = (curvalue / max) * width;
var curheight = height / (this.data.length - 1);
var halfCurWidth = (curwidth / 2);
var nextvalue = this.data[i + 1];
var nextwidth = this.data[i + 1] ? (nextvalue / max) * width : null;
var halfNextWidth = (nextwidth / 2);
var center = this.marginLeft + (firstwidth / 2);
//
// These are the coordinates for the Funnel
// segment
//
var x1 = center - halfCurWidth,
y1 = accheight * properties.effectGrowMultiplier,
x2 = center + halfCurWidth,
y2 = accheight * properties.effectGrowMultiplier,
x3 = center + halfNextWidth,
y3 = (accheight + curheight) * properties.effectGrowMultiplier,
x4 = center - halfNextWidth,
y4 = (accheight + curheight) * properties.effectGrowMultiplier;
// Draw a background bar?
if (properties.backgroundBars) {
this.drawBackgroundBar(i, [x1, y1, x2, y2, x3, y3, x4, y4]);
}
if (nextwidth && i < this.data.length - 1) {
this.context.beginPath();
this.context.fillStyle = properties.colors[i];
this.context.strokeStyle = '#0000';
this.context.moveTo(x1, y1);
this.context.lineTo(x2, y2);
this.context.lineTo(x3, y3);
this.context.lineTo(x4, y4);
//
// Store the coordinates
//
this.coords.push([x1, y1, x2, y2, x3, y3, x4, y4]);
}
// The redrawing if the shadow is on will do the stroke
if (!properties.shadow) {
this.context.stroke();
}
this.context.fill();
accheight += curheight;
}
//
// If the shadow is enabled, redraw every segment, in
// order to allow for shadows going upwards
//
if (properties.shadow) {
RGraph.noShadow(this);
for (i=0; i<this.coords.length; ++i) {
this.context.strokeStyle = properties.colors[i];
this.context.fillStyle = properties.colors[i];
this.context.beginPath();
this.context.moveTo(this.coords[i][0], this.coords[i][1]);
this.context.lineTo(this.coords[i][2], this.coords[i][3]);
this.context.lineTo(this.coords[i][4], this.coords[i][5]);
this.context.lineTo(this.coords[i][6], this.coords[i][7]);
this.context.closePath();
this.context.stroke();
this.context.fill();
}
}
//
// Lastly, draw the key if necessary
//
if (properties.key && properties.key.length) {
RGraph.drawKey(this, properties.key, properties.colors);
}
};
//
// Draws the labels
//
this.drawLabels = function ()
{
if (properties.labels && properties.labels.length) {
//
// If the xaxisLabels option is a string then turn it
// into an array.
//
if (typeof properties.labels === 'string') {
properties.labels = RGraph.arrayPad({
array: [],
length: this.coords.length + 1,
value: properties.labels
});
}
//
// Label substitution
//
for (var i=0; i<properties.labels.length; ++i) {
properties.labels[i] = RGraph.labelSubstitution({
object: this,
text: properties.labels[i],
index: i,
value: this.data[i],
decimals: properties.labelsFormattedDecimals || 0,
unitsPre: properties.labelsFormattedUnitsPre || '',
unitsPost: properties.labelsFormattedUnitsPost || '',
thousand: properties.labelsFormattedThousand || ',',
point: properties.labelsFormattedPoint || '.'
});
}
}
//
// Draws the labels
//
if (!RGraph.isNullish(properties.labels) && typeof properties.labels === 'object' && properties.labels.length > 0) {
var font = properties.textFont,
size = properties.textSize,
color = properties.textColor,
labels = properties.labels,
halign = properties.textHalign === 'left' ? 'left' : 'center';
// Get the text configuration
var textConf = RGraph.getTextConf({
object: this,
prefix: 'labels'
});
// Determine the X coordinate
if (typeof properties.labelsX == 'number') {
var x = properties.labelsX;
} else {
var x = halign == 'left' ? (this.marginLeft - 15) : ((this.canvas.width - this.marginLeft - this.marginRight) / 2) + this.marginLeft;
}
// Loop through the labels drawing them on the canvas.
// All but the last label
for (var j=0; j<this.coords.length; ++j) { // MUST be "j"
this.context.beginPath();
// Set the color back to black
this.path('ss black fs %', color);
// Turn off any shadow
RGraph.noShadow(this);
// Calculate the Y coordinate
if (properties.labelsPosition === 'section') {
var y = this.coords[j][1] + ((this.coords[j][5] - this.coords[j][3]) / 2);
} else {
var y = this.coords[j][1];
}
var ret = RGraph.text({
object: this,
font: textConf.font,
size: textConf.size,
color: textConf.color,
bold: textConf.bold,
italic: textConf.italic,
x: x + properties.labelsOffsetx,
y: y + properties.labelsOffsety,
text: labels[j] || '',
valign: 'center',
halign: halign,
bounding: true,
boundingFill: properties.labelsBackground,
boundingStroke: 'rgba(0,0,0,0)',
tag: 'labels',
cssClass: RGraph.getLabelsCSSClassName({
object: this,
name: 'labelsClass',
index: j
})
});
if (properties.labelsSticks && labels[j]) {
//
// Measure the text
//
this.context.font = textConf.size + 'pt ' + font;
var labelWidth = this.context.measureText(labels[j]).width;
//
// Draw the horizontal indicator line
//
this.path(
'b m % % l % % s gray',
x + labelWidth + 10,
y,
(properties.labelsPosition === 'section' ? this.coords[j][0] + ((this.coords[j][6] - this.coords[j][0]) / 2) : this.coords[j][0]) - 10,
y
);
}
}
// This draws the last label if defined
var lastLabel = labels[j];
if (lastLabel && properties.labelsPosition === 'edge') {
RGraph.text({
object: this,
font: textConf.font,
size: textConf.size,
color: textConf.color,
bold: textConf.bold,
italic: textConf.italic,
x: x + properties.labelsOffsetx,
y: this.coords[j - 1][5] + properties.labelsOffsety,
text: lastLabel,
valign: 'center',
halign: halign,
bounding: true,
boundingFill: 'rgba(255,255,255,0.7)',
boundingStroke: 'rgba(0,0,0,0)',
tag: 'labels',
cssClass: RGraph.getLabelsCSSClassName({
object: this,
name: 'labelsClass',
index: j
})
});
if (properties.labelsSticks) {
// Measure the text
this.context.font = textConf.size + 'pt ' + font;
var labelWidth = this.context.measureText(lastLabel).width;
// Draw the horizontal indicator line
this.path(
'b m % % l % % s gray',
x + labelWidth + 10, Math.round(this.coords[j - 1][7]),
this.coords[j - 1][6] - 10, Math.round(this.coords[j - 1][7])
);
}
}
}
};
//
// Gets the appropriate segment that has been highlighted
//
this.getShape = function (e)
{
var coords = this.coords;
var mouseCoords = RGraph.getMouseXY(e);
var x = mouseCoords[0];
var y = mouseCoords[1];
for (i=0,len=coords.length; i<len; ++i) {
var segment = coords[i]
if (RGraph.tooltipsHotspotIgnore(this, i)) {
continue;
}
// Path testing
this.path(
'b m % % l % % l % % l % % l % %',
segment[0], segment[1],
segment[2], segment[3],
segment[4], segment[5],
segment[6], segment[7],
segment[8], segment[9]
);
if (
this.context.isPointInPath(x, y)
&& (this.properties.clip ? RGraph.clipTo.test(this, x, y) : true)
) {
if (RGraph.parseTooltipText && properties.tooltips) {
var tooltip = RGraph.parseTooltipText(properties.tooltips, i);
}
return {
object: this,
coords: segment,
dataset: 0,
index: i,
sequentialIndex: i,
label: properties.labels && typeof properties.labels[i] === 'string' ? properties.labels[i] : null,
tooltip: typeof tooltip === 'string' ? tooltip : null
};
}
}
return null;
};
//
// Each object type has its own Highlight() function which highlights the appropriate shape
//
// @param object shape The shape to highlight
//
this.highlight = function (shape)
{
if (properties.tooltipsHighlight) {
if (typeof properties.highlightStyle === 'function') {
(properties.highlightStyle)(shape);
return;
}
if (typeof properties.highlightStyle === 'string' && properties.highlightStyle === 'invert') {
for (var i=0; i<this.coords.length; ++i) {
if (i !== shape.sequentialIndex) {
var coords = this.coords[i];
this.path(
'b m % % l % % l % % l % % c s % f %',
coords[0] - 0.5, coords[1] - 0.5,
coords[2] + 0.5, coords[3] - 0.5,
coords[4] + 0.5, coords[5] + 0.5,
coords[6] - 0.5, coords[7] + 0.5,
properties.highlightStroke,
properties.highlightFill
);
}
}
return;
}
var coords = shape.coords;
this.path(
'b m % % l % % l % % l % % c s % f %',
coords[0] - 0.5, coords[1] - 0.5,
coords[2] + 0.5, coords[3] - 0.5,
coords[4] + 0.5, coords[5] + 0.5,
coords[6] - 0.5, coords[7] + 0.5,
properties.highlightStroke,
properties.highlightFill
);
}
};
//
// 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);
if (
mouseXY[0] > properties.marginLeft
&& mouseXY[0] < (this.canvas.width - properties.marginRight)
&& mouseXY[1] > properties.marginTop
&& mouseXY[1] < (this.canvas.height - properties.marginBottom)
) {
return this;
}
};
//
// 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.colors = RGraph.arrayClone(properties.colors);
this.original_colors.keyColors = RGraph.arrayClone(properties.keyColors);
this.original_colors.highlightFill = RGraph.arrayClone(properties.highlightFill);
this.original_colors.highlightStroke = RGraph.arrayClone(properties.highlightStroke);
this.original_colors.colorsStroke = RGraph.arrayClone(properties.colorsStroke);
}
var colors = properties.colors;
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForHorizontalGradient(colors[i]);
}
var backgroundBarsColors = properties.backgroundBarsColors;
if (backgroundBarsColors) {
for (var i=0; i<backgroundBarsColors.length; ++i) {
backgroundBarsColors[i] = this.parseSingleColorForHorizontalGradient(backgroundBarsColors[i]);
}
}
var colors = properties.colors;
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForHorizontalGradient(colors[i]);
}
properties.colorsStroke = this.parseSingleColorForVerticalGradient(properties.colorsStroke);
properties.highlightStroke = this.parseSingleColorForHorizontalGradient(properties.highlightStroke);
properties.highlightFill = this.parseSingleColorForHorizontalGradient(properties.highlightFill);
};
//
// 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.parseSingleColorForHorizontalGradient = function (color)
{
if (!color || typeof color != 'string') {
return color;
}
if (color.match(/^gradient\((.*)\)$/i)) {
// Allow for JSON gradients
if (color.match(/^gradient\(({.*})\)$/i)) {
return RGraph.parseJSONGradient({object: this, def: RegExp.$1});
}
var parts = RegExp.$1.split(':');
// Create the gradient
var grad = this.context.createLinearGradient(properties.marginLeft,0,this.canvas.width - properties.marginRight,0);
var diff = 1 / (parts.length - 1);
grad.addColorStop(0, RGraph.trim(parts[0]));
for (var j=1; j<parts.length; ++j) {
grad.addColorStop(j * diff, RGraph.trim(parts[j]));
}
}
return grad ? grad : color;
};
//
// This parses a single color value
//
this.parseSingleColorForVerticalGradient = function (color)
{
if (!color || typeof color != 'string') {
return color;
}
if (color.match(/^gradient\((.*)\)$/i)) {
var parts = RegExp.$1.split(':');
// Create the gradient
var grad = this.context.createLinearGradient(0, properties.marginTop,0,this.canvas.height - properties.marginBottom);
var diff = 1 / (parts.length - 1);
grad.addColorStop(0, RGraph.trim(parts[0]));
for (var j=1; j<parts.length; ++j) {
grad.addColorStop(j * diff, RGraph.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 coords = this.coords[index];
if (coords && coords.length == 8) {
var pre_linewidth = this.context.lineWidth;
this.context.lineWidth = properties.keyInteractiveHighlightChartLinewidth;
this.context.strokeStyle = properties.keyInteractiveHighlightChartStroke;
this.context.fillStyle = properties.keyInteractiveHighlightChartFill;
this.context.beginPath();
this.context.moveTo(coords[0] - 0.5, coords[1] - 0.5);
this.context.lineTo(coords[2] + 0.5, coords[3] - 0.5);
this.context.lineTo(coords[4] + 0.5, coords[5] + 0.5);
this.context.lineTo(coords[6] - 0.5, coords[7] + 0.5);
this.context.closePath();
this.context.fill();
this.context.stroke();
// Reset the linewidth
this.context.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;
}
if (typeof this[type] !== 'function') {
this[type] = func;
} else {
RGraph.addCustomEventListener(this, type, func);
}
return this;
};
//
// This function runs once only
// (put at the end of the file (before any effects))
//
this.firstDrawFunc = function ()
{
};
//
// A worker function that handles Bar chart specific tooltip substitutions
//
this.tooltipSubstitutions = function (opt)
{
return {
index: opt.index,
dataset: 0,
sequentialIndex: opt.index,
value: this.data[opt.index],
values: [this.data[opt.index]]
};
};
//
// A worker function that returns the correct color/label/value
//
// @param object specific The indexes that are applicable
// @param number index The appropriate index
//
this.tooltipsFormattedCustom = function (specific, index)
{
var color = properties.colors[specific.index];
var label = RGraph.isString(properties.tooltipsFormattedKeyLabels[specific.index]) ? properties.tooltipsFormattedKeyLabels[specific.index] : '';
if ( !RGraph.isNullish(properties.tooltipsFormattedKeyColors)
&& typeof properties.tooltipsFormattedKeyColors === 'object'
&& typeof properties.tooltipsFormattedKeyColors[specific.index] === 'string')
{
color = properties.tooltipsFormattedKeyColors[specific.index];
}
return {
label: label,
color: color
};
};
//
// This allows for static tooltip positioning
//
this.positionTooltipStatic = function (args)
{
var obj = args.object,
e = args.event,
tooltip = args.tooltip,
index = args.index,
canvasXY = RGraph.getCanvasXY(obj.canvas)
coords = this.coords[args.index];
// Position the tooltip in the X direction
args.tooltip.style.left = (
canvasXY[0] // The X coordinate of the canvas
+ (((coords[2] - coords[0]) / 2) + coords[0]) // The X coordinate of the bar on the chart
- (tooltip.offsetWidth / 2) // Subtract half of the tooltip width
+ obj.properties.tooltipsOffsetx // Add any user defined offset
) + 'px';
args.tooltip.style.top = (
canvasXY[1] // The Y coordinate of the canvas
+ coords[1] // The Y coordinate of the bar on the chart
//+ ((coords[5] - coords[1]) / 2) // Add half of the height of the segment
- tooltip.offsetHeight // The height of the tooltip
+ obj.properties.tooltipsOffsety // Add any user defined offset
- 10 // An arbitrary amount
) + 'px';
// If the top of the tooltip is off the top of the page
// then move the tooltip down
if(parseFloat(args.tooltip.style.top) < 0) {
args.tooltip.style.top = parseFloat(args.tooltip.style.top) + 20 + 'px';
}
};
//
// This returns the relevant value for the formatted key
// macro %{value}. THIS VALUE SHOULD NOT BE FORMATTED.
//
// @param number index The index in the dataset to get
// the value for
//
this.getKeyValue = function (index)
{
return RGraph.isArray(this.properties.keyFormattedValueSpecific) && RGraph.isNumber(this.properties.keyFormattedValueSpecific[index])
? this.properties.keyFormattedValueSpecific[index]
: this.data[index];
};
//
// Returns how many data-points there should be when a string
// based key property has been specified. For example, this:
//
// key: '%{property:_labels[%{index}]} %{value_formatted}'
//
// ...depending on how many bits of data ther is might get
// turned into this:
//
// key: [
// '%{property:_labels[%{index}]} %{value_formatted}',
// '%{property:_labels[%{index}]} %{value_formatted}',
// '%{property:_labels[%{index}]} %{value_formatted}',
// '%{property:_labels[%{index}]} %{value_formatted}',
// '%{property:_labels[%{index}]} %{value_formatted}',
// ]
//
// ... ie in that case there would be 4 data-points so the
// template is repeated 4 times.
//
this.getKeyNumDatapoints = function ()
{
return this.data.length - 1;
};
//
// Funnel chart grow
//
// Gradually increases the vertical size of the
// Funnel chart
//
// @param object OPTIONAL An object of options
// @param function OPTIONAL A callback function
//
this.grow = function ()
{
// Cancel any stop request if one is pending
this.cancelStopAnimation();
var obj = this,
canvas = this.canvas,
opt = arguments[0] ? arguments[0] : {},
frames = opt.frames || 30,
frame = 0,
callback = arguments[1] ? arguments[1] : function () {};
var iterator = function ()
{
if (obj.stopAnimationRequested) {
// Reset the flag
obj.stopAnimationRequested = false;
return;
}
obj.set('effectGrowMultiplier', frame / frames);
RGraph.redrawCanvas(canvas);
if (frame++ < frames) {
RGraph.Effects.updateCanvas(iterator);
} else {
RGraph.redrawCanvas(obj.canvas);
callback(obj);
}
};
iterator();
return this;
};
//
// Couple of functions that allow you to control the
// animation effect
//
this.stopAnimation = function ()
{
this.stopAnimationRequested = true;
};
this.cancelStopAnimation = function ()
{
this.stopAnimationRequested = false;
};
//
// Always now regsiter the object
//
RGraph.register(this);
//
// This is the 'end' of the constructor so if the first argument
// contains configuration data - handle that.
//
RGraph.parseObjectStyleConfig(this, conf.options);
};