// 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 Activity meter constructor
//
RGraph.Activity = function (conf)
{
var id = conf.id,
canvas = document.getElementById(id),
min = conf.min,
max = conf.max,
value = conf.value;
// id, min, max, value
// Get the canvas and context objects
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 = 'activity';
this.min = RGraph.stringsToNumbers(min);
this.max = RGraph.stringsToNumbers(max);
this.value = RGraph.stringsToNumbers(value);
this.centerx = null;
this.centery = null;
this.radius = null;
this.isRGraph = true;
this.isrgraph = true;
this.rgraph = true;
this.currentValue = null;
this.uid = RGraph.createUID();
this.canvas.uid = this.canvas.uid ? this.canvas.uid : RGraph.createUID();
this.colorsParsed = false;
this.coordsText = [];
this.angles =
this.coords = [];
this.original_colors = [];
this.images = [];
this.firstDraw = true; // After the first draw this will be false
this.stopAnimationRequested = false;// Used to control the animations
//
// If the value is zero set it to very
// slightly more than zero so the meter
// is drawn correctly.
//
// Likewise with the maximum value
//
if (typeof this.value === 'number') {
this.value = [this.value];
}
for (var i=0; i<this.value.length; ++i) {
if (this.value[i] <= 0.0000001) {
this.value[i] = 0.0000001;
}
}
// Various config type stuff
this.properties =
{
radius: null,
centerx: null,
centery: null,
width: null,
ends: 'round',
marginLeft: 15,
marginRight: 15,
marginTop: 15,
marginBottom: 15,
marginInner: 1,
backgroundGrid: false,
backgroundGridColor: '#666',
backgroundGridCircles: true,
backgroundGridCirclesCount: null,
backgroundGridRadials: true,
backgroundGridRadialsCount: 8,
backgroundRings: true,
backgroundRingsColors: null,
backgroundRingsAlpha: 0.5,
backgroundColor: 'black',
colors: ['#F45B5B','#90EE7E','#2B908F','red','green','blue','yellow','pink'],
icons: [],
iconsWidth: null,
iconsHeight: null,
iconsOffsetx: 0,
iconsOffsety: 0,
textFont: 'Arial, Verdana, sans-serif',
textSize: 12,
textColor: '#aaa',
textBold: false,
textItalic: false,
textAccessible: false,
textAccessibleOverflow: 'visible',
textAccessiblePointerevents: false,
text: null,
labelsCenter: false,
labelsCenterIndex: 0,
labelsCenterFont: null,
labelsCenterSize: 50,
labelsCenterColor: null,
labelsCenterBold: null,
labelsCenterItalic: null,
labelsCenterUnitsPre: '',
labelsCenterUnitsPost: '',
labelsCenterDecimals: 0,
labelsCenterPoint: '.',
labelsCenterThousand: ',',
labelsCenterSpecific: '',
labelsCenterOffsetx: 0,
labelsCenterOffsety: 0,
labels: [],
labelsColor: null,
labelsFont: null,
labelsSize: null,
labelsBold: null,
labelsItalic: null,
labelsBackgroundFill: 'transparent',
labelsBackgroundStroke: 'transparent',
labelsOffsetx: 0,
labelsOffsety: 0,
labelsFormattedDecimals: 0,
labelsFormattedPoint: '.',
labelsFormattedThousand: ',',
labelsFormattedUnitsPre: '',
labelsFormattedUnitsPost: '',
contextmenu: null,
annotatable: false,
annotatableColor: 'black',
annotatableLinewidth: 1,
adjustable: false,
tooltips: null,
tooltipsEffect: 'slide',
tooltipsCssClass: 'RGraph_tooltip',
tooltipsCss: null,
tooltipsEvent: 'onclick',
tooltipsHighlight: true,
tooltipsPersistent: false,
tooltipsHotspotXonly: false,
tooltipsHotspotIgnore: null,
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,
highlightStyle: null,
highlightStroke: 'rgba(0,0,0,0)',
highlightFill: 'rgba(255,255,255,0.5)',
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;
}
}
// Check for support
if (!this.canvas) {
alert('[ACTIVITY] No canvas support');
return;
}
// 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
//
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 === 'backgroundColor'
) {
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');
// Translate half a pixel for antialiasing purposes -
// but only if it hasn't been done already
//
// MUST be the first thing done to the canvas!
//
if (!this.canvas.__rgraph_aa_translated__) {
this.context.translate(0.5,0.5);
this.canvas.__rgraph_aa_translated__ = true;
}
// Ensure that the obj.value property is an array
if (typeof this.value === 'number') {
this.value = [this.value];
}
//
// Constrain the value to be within the min and max
//
for (var i=0; i<this.value.length; ++i) {
if (this.value[i] > this.max) this.value[i] = this.max;
if (this.value[i] < this.min) this.value[i] = this.min;
}
//
// Set the current value
//
this.currentValue = RGraph.arrayClone(this.value);
//
// Make the margins easy to access
//
this.marginLeft = properties.marginLeft;
this.marginRight = properties.marginRight;
this.marginTop = properties.marginTop;
this.marginBottom = properties.marginBottom;
this.centerx = ((this.canvas.width - this.marginLeft - this.marginRight) / 2) + this.marginLeft;
this.centery = ((this.canvas.height - this.marginBottom - this.marginTop) / 2) + this.marginTop;
this.radius = Math.min(
(this.canvas.width - this.marginLeft - this.marginRight) / 2,
(this.canvas.height - this.marginTop - this.marginBottom) / 2
);
//
// Stop this growing uncontrollably
//
this.coordsText = [];
//
// Custom centerx, centery and radius
//
if (typeof properties.centerx === 'number') this.centerx = properties.centerx;
if (typeof properties.centery === 'number') this.centery = properties.centery;
if (typeof properties.radius === 'number') this.radius = properties.radius;
//
// Allow the centerx/centery/radius to be a plus/minus
//
if (typeof this.properties.radius === 'string' && this.properties.radius.match(/^\+|-\d+$/) ) this.radius += parseFloat(this.properties.radius);
if (typeof this.properties.centerx === 'string' && this.properties.centerx.match(/^\+|-\d+$/) ) this.centerx += parseFloat(this.properties.centerx);
if (typeof this.properties.centery === 'string' && this.properties.centery.match(/^\+|-\d+$/) ) this.centery += parseFloat(this.properties.centery);
// The width variable is the width of an individual ring
this.width = typeof properties.width === 'number' ? properties.width : ((this.radius * 0.75) / this.value.length);
this.width = this.width - properties.marginInner - properties.marginInner;
// Allow for +/-xx style width
if (typeof properties.width === 'string') {
this.width += Number(properties.width);
}
//
// 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;
}
//
// Install clipping
//
if (!RGraph.isNull(this.properties.clip)) {
RGraph.clipTo.start(this, this.properties.clip);
}
//
// Draw the meter and its label
//
this.drawBackground();
this.drawMeter();
this.drawLabels();
this.drawIcons();
this.drawEnds();
//
// Setup the context menu if required
//
if (properties.contextmenu) {
RGraph.showContext(this);
}
//
// Add custom text thats specified
//
RGraph.addCustomText(this);
//
// This installs the event listeners
//
RGraph.installEventListeners(this);
//
// End clipping
//
if (!RGraph.isNull(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;
};
//
// 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;
};
//
// Draw the background"grid"
//
this.drawBackground = function ()
{
// First thing to do is clear the canvas to the backgroundColor
if (properties.backgroundColor) {
this.path(
'fs % fr -5 -5 % %',
properties.backgroundColor,
this.canvas.width + 10,
this.canvas.height + 10
);
}
// Draw the grid?
if (properties.backgroundGrid) {
// Draw the background grey circles
if (properties.backgroundGridCircles) {
// How many background circles?
if (typeof properties.backgroundGridCirclesCount === 'number') {
var count = properties.backgroundGridCirclesCount;
} else {
var count = this.value.length + 1;
}
for (var i=0; i<count; i++) {
var radius = this.radius - (i * (this.width + (2 * properties.marginInner)));
this.path(
'b a % % % 0 6.29 false s %',
this.centerx, this.centery, radius,
properties.backgroundGridColor
);
}
//
// Draw the background lines that go from the center outwards
//
if (properties.backgroundGridRadials) {
var angle = (RGraph.TWOPI / properties.backgroundGridRadialsCount);
for (var i=0; i<=properties.backgroundGridRadialsCount; ++i) {
// Radius must be greater than 0 for Opera to work
this.path(
'b a % % % % % % a % % % % % % s %',
this.centerx, this.centery, radius, (i * angle) - RGraph.HALFPI, (i * angle) - RGraph.HALFPI, false,
this.centerx, this.centery, this.radius, (i * angle) - RGraph.HALFPI, (i * angle) - RGraph.HALFPI, false,
properties.backgroundGridColor
);
}
}
}
}
};
//
// Draws the meter
//
this.drawMeter = function ()
{
var color;
// This is the maximum radius of the outer ring
var r = (this.radius - properties.marginInner);
// Draw the background rings if enabled
if (properties.backgroundRings) {
//
// Loop through the values and draw the background rings
//
this.context.globalAlpha = properties.backgroundRingsAlpha;
for (var i=0; i<this.value.length; ++i) {
// Determine the color
if (RGraph.isArray(properties.backgroundRingsColors) && typeof properties.backgroundRingsColors[i] === 'string') {
color = properties.backgroundRingsColors[i];
} else {
color = properties.colors[i];
}
this.path(
'b a % % % % % false a % % % % % true f %',
this.centerx,
this.centery,
r - (i * (properties.marginInner + properties.marginInner + this.width)),
0 - RGraph.HALFPI,
RGraph.TWOPI - RGraph.HALFPI,
this.centerx,
this.centery,
r - this.width - (i * (properties.marginInner + properties.marginInner + this.width)),
RGraph.TWOPI - RGraph.HALFPI,
0 - RGraph.HALFPI,
color
);
}
// Reset the alpha value
this.context.globalAlpha = 1;
}
//
// Now loop through the values and draw each circle
//
for (var i=0; i<this.value.length; ++i) {
var radians = ((this.value[i] - this.min) / (this.max - this.min)) * RGraph.TWOPI;
this.path(
'b a % % % % % false a % % % % % true f %',
this.centerx,
this.centery,
r - (i * (properties.marginInner + properties.marginInner + this.width)),
0 - RGraph.HALFPI,
radians - RGraph.HALFPI,
this.centerx,
this.centery,
r - this.width - (i * (properties.marginInner + properties.marginInner + this.width)),
radians - RGraph.HALFPI,
0 - RGraph.HALFPI,
properties.colors[i]
);
// Store the coordinates of the ring
this.angles[i] =
this.coords[i] = {
x: this.centerx,
y: this.centery,
angleStart: 0 - RGraph.HALFPI,
angleEnd: radians - RGraph.HALFPI,
radiusInner: r - this.width - (i * (properties.marginInner + properties.marginInner + this.width)),
radiusOuter: r - (i * (properties.marginInner + properties.marginInner + this.width)),
color: properties.colors[i],
};
}
//
// By calling the RGraph.text() function with a blank
// string the text accessible wrapper DIV will be
// created and the responsive function will work
// as expected (ie the css: and parentCss: options).
//
RGraph.text({
object: this,
x: -10000,
y: -10000,
color: 'transparent',
text: ''
});
};
//
// Draws the center label and the vertical labels if enabled
//
this.drawLabels = function ()
{
//
// Draw the label if specified
//
if (properties.labelsCenter) {
var textConf = RGraph.getTextConf({
object: this,
prefix: 'labelsCenter'
});
RGraph.text({
object: this,
text: String(properties.labelsCenterSpecific ? properties.labelsCenterSpecific : RGraph.numberFormat({
object: this,
number: this.value[properties.labelsCenterIndex].toFixed(properties.labelsCenterDecimals),
unitspre: properties.labelsCenterUnitsPre,
unitspost: properties.labelsCenterUnitsPost,
point: properties.labelsCenterPoint,
thousand: properties.labelsCenterThousand
})),
x: this.centerx + properties.labelsCenterOffsetx,
y: this.centery + properties.labelsCenterOffsety,
halign: 'center',
valign: 'center',
color: textConf.color,
size: textConf.size,
font: textConf.font,
bold: textConf.bold,
italic: textConf.italic
});
}
var textConf = RGraph.getTextConf({
object: this,
prefix: 'labels'
});
if (typeof properties.labels === 'string') {
properties.labels = RGraph.arrayPad({
array: [],
length: this.coords.length,
value: properties.labels
});
}
// Loop thru the labels
for (var i=0; i<properties.labels.length; ++i) {
if ( typeof properties.labels === 'object' && properties.labels.length && typeof properties.labels[i] === 'string' ) {
var text = RGraph.labelSubstitution({
object: this,
text: properties.labels[i],
index: i,
value: this.value[i],
decimals: properties.labelsFormattedDecimals,
point: properties.labelsFormattedPoint,
thousand: properties.labelsFormattedThousand,
unitsPre: properties.labelsFormattedUnitsPre,
unitsPost: properties.labelsFormattedUnitsPost,
});
}
RGraph.text({
object: this,
text: ( RGraph.isString(properties.labels[i])
|| RGraph.isNumber(properties.labels[i]) ) ? text : '',
x: this.coords[i].x - 5 + properties.labelsOffsetx,
y: this.coords[i].y - this.coords[i].radiusOuter + ((this.coords[i].radiusOuter - this.coords[i].radiusInner) / 2) + properties.labelsOffsety,
valign: 'center',
halign: 'right',
bounding: true,
boundingFill: properties.labelsBackgroundFill,
boundingStroke: properties.labelsBackgroundStroke,
textConfPrefix: 'labels',
});
}
};
//
// Draws the icons at the start of the circles.
//
this.drawIcons = function ()
{
for (var i=0; i<this.value.length; ++i) {
if (typeof properties.icons[i] === 'string' && properties.icons[i].length) {
this.images[i] = new Image();
this.images[i].src = properties.icons[i];
this.images[i].index = i;
var obj = this;
this.images[i].onload = function ()
{
// Aids readability
var img = this;
// IMPORTANT:
//
// In this callback the 'this' variable is the image object. The
// 'obj' variable is the chart object.
//
var width = img.width;
var height = width;
// Reduce the size of the icon if necessary
if (width >= obj.width) {
width -= 10;
height -= 10;
}
// If a width has been stipulated then use it
if (typeof properties.iconsWidth === 'number') {
width = properties.iconsWidth;
}
// If a height has been specified then use it
if (typeof properties.iconsHeight === 'number') {
height = properties.iconsHeight;
}
var x = obj.centerx - (width / 3) + ((properties.ends === 'straight' || properties.ends === 'square') ? 15 : 0);
var y = (obj.centery - obj.coords[this.index].radiusOuter + ((obj.coords[this.index].radiusOuter - obj.coords[this.index].radiusInner) / 2) - (height / 2) );
x += properties.iconsOffsetx;
y += properties.iconsOffsety;
obj.context.drawImage(
this, x, y, width, height
);
};
}
}
};
//
// Draws the rounded ends to the bars
//
this.drawEnds = function ()
{
if (properties.ends === 'straight' || properties.ends === 'square') {
return;
}
for (var i=0; i<this.coords.length; ++i) {
var x = this.coords[i].x;
var y = this.coords[i].y - ((this.coords[i].radiusOuter - this.coords[i].radiusInner) / 2) - this.coords[i].radiusInner;
this.path(
'b a % % % % % false f %',
x,
y,
this.width / 2,
0,
6.29,
properties.colors[i]
);
// cx,cy,angle,radius
var xy = RGraph.getRadiusEndPoint({
cx: this.centerx,
cy: this.centery,
angle: this.coords[i].angleEnd,
radius: ((this.coords[i].radiusOuter - this.coords[i].radiusInner) / 2) + this.coords[i].radiusInner
});
this.path(
'b a % % % % % false f %',
xy[0],
xy[1],
(this.coords[i].radiusOuter - this.coords[i].radiusInner) / 2,
0,
6.29,
properties.colors[i]
);
}
};
//
// A placeholder function
//
// @param object The event object
//
this.getShape = function (e)
{
var mouseXY = RGraph.getMouseXY(e);
var mouseX = mouseXY[0];
var mouseY = mouseXY[1];
// Go through the obj.coords array and find the correct index/shape
for (var i=0; i<this.coords.length; ++i) {
if (RGraph.tooltipsHotspotIgnore(this, i)) {
continue;
}
// Recreate the shape but don't fill/stroke it
this.path(
'b a % % % % % false a % % % % % true',
this.coords[i].x,
this.coords[i].y,
this.coords[i].radiusOuter,
this.coords[i].angleStart,
this.coords[i].angleEnd,
this.coords[i].x,
this.coords[i].y,
this.coords[i].radiusInner,
this.coords[i].angleEnd,
this.coords[i].angleStart
);
//
// Add the ends to the path if the bars are capped
//
if (properties.ends) {
this.path(
'a % % % % % false',
this.coords[i].x,
this.coords[i].y - this.coords[i].radiusInner - (this.width / 2),
this.width / 2,
RGraph.HALFPI,
RGraph.PI + RGraph.HALFPI
);
// cx,cy,angle,radius of the circle at the end of the bar
var xy = RGraph.getRadiusEndPoint({
cx: this.centerx,
cy: this.centery,
angle: this.coords[i].angleEnd,
radius: ((this.coords[i].radiusOuter - this.coords[i].radiusInner) / 2) + this.coords[i].radiusInner
});
this.path(
'm % % a % % % % % false',
xy[0],
xy[1],
xy[0],
xy[1],
(this.coords[i].radiusOuter - this.coords[i].radiusInner) / 2,
0,
6.29
);
}
if ( this.context.isPointInPath(mouseX, mouseY)
&& (this.properties.clip ? RGraph.clipTo.test(this, mouseX, mouseY) : true)
) {
if (RGraph.parseTooltipText) {
var tooltip = RGraph.parseTooltipText(properties.tooltips, i);
}
return {
object: this,
x: this.coords[i].x,
y: this.coords[i].y,
radiusInner: this.coords[i].radiusInner,
radiusOuter: this.coords[i].radiusOuter,
angleStart: this.coords[i].angleStart,
angleEnd: this.coords[i].angleEnd,
tooltip: typeof tooltip === 'string' ? tooltip : null,
label: properties.labels && typeof properties.labels[i] === 'string' ? properties.labels[i] : null,
dataset: 0,
index: i,
sequentialIndex: i
};
}
}
};
//
// This function returns the pertinent value for a particular click (or other mouse event)
//
// @param obj e The event object
//
this.getValue = function (e)
{
var mouseXY = RGraph.getMouseXY(e);
var angle = RGraph.getAngleByXY(
this.centerx,
this.centery,
mouseXY[0],
mouseXY[1]
);
// Adjust the angle because canvas angles
// start at the east axis
angle += RGraph.HALFPI;
if (angle > RGraph.TWOPI) {
angle -= RGraph.TWOPI;
}
// Calculate the value based on the angle and min/max values
var value = ((angle / RGraph.TWOPI) * (this.max - this.min)) + this.min;
// Ensure that the value is in range
value = Math.max(value, this.min);
value = Math.min(value, this.max);
return value;
};
//
// 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),
width = this.width;
// Work out the radius
var radius = RGraph.getHypLength(
this.centerx,
this.centery,
mouseXY[0],
mouseXY[1]
);
if (radius > this.radius || radius < (this.radius * 0.25) ) {
return null;
}
return this;
};
//
// This method handles the adjusting calculation for when the mouse is moved
//
// @param object e The event object
//
this.adjusting_mousemove = function (e)
{
//
// Handle adjusting for the Bar
//
if (properties.adjustable && RGraph.Registry.get('adjusting') && RGraph.Registry.get('adjusting').uid == this.uid) {
var mouseXY = RGraph.getMouseXY(e);
var radius = RGraph.getHypLength(
this.centerx,
this.centery,
mouseXY[0],
mouseXY[1]
);
var index = this.getIndexByRadius(radius);
// Store the index in the radius
if (typeof RGraph.Registry.get('adjusting.index') !== 'number') {
RGraph.Registry.set('adjusting.index', index);
RGraph.addCustomEventListener(this, 'onadjustend', function ()
{
RGraph.Registry.set('adjusting.index', null);
});
} else {
index = RGraph.Registry.get('adjusting.index')
}
if (typeof index === 'number') {
this.value[index] = this.getValue(e);
RGraph.clear(this.canvas);
RGraph.redrawCanvas(this.canvas);
RGraph.fireCustomEvent(this, 'onadjust');
}
}
};
//
// Returns the relevant index of the relevant datapoint.
// But only if it's in range.
//
// @param number radius The radius to check
//
this.getIndexByRadius = function (radius)
{
// Loop through the shapes to determine the correct shape
for (var i=0; i<this.coords.length; ++i) {
if (radius < this.coords[i].radiusOuter && radius > this.coords[i].radiusInner) {
return i;
}
}
return null;
};
//
// This method returns the appropriate angle for a value
//
// @param number value The value
//
this.getAngle = function (value)
{
// Higher than max
if (value > this.max || value < this.min) {
return null;
}
var angle = (((value - this.min) / (this.max - this.min)) * RGraph.TWOPI) - RGraph.HALFPI;
if (value === this.max) angle -= 0.00001;
if (value === this.min) angle += 0.00001;
return angle;
};
//
// 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 (typeof properties.highlightStyle === 'function') {
if (properties.tooltipsHighlight) {
(properties.highlightStyle)(shape);
}
// Highlight all of the rings except this one - essentially an inverted highlight
} else if (typeof properties.highlightStyle === 'string' && properties.highlightStyle === 'invert') {
if (properties.tooltipsHighlight) {
this.context.beginPath();
for (var i=0; i<this.coords.length; ++i) {
if (shape.index !== i) {
this.pathBar(i);
}
}
this.context.fillStyle = properties.highlightFill;
this.context.strokeStyle = properties.highlightStroke;
this.context.stroke();
this.context.fill();
}
// Regular highlighting
} else {
if (properties.tooltipsHighlight) {
this.context.beginPath();
this.pathBar(shape.index);
this.context.fillStyle = properties.highlightFill;
this.context.strokeStyle = properties.highlightStroke;
this.context.stroke();
this.context.fill();
}
}
};
//
// Paths a bar given an index but does not:
// o stroke
// o fill
// o issue a beginPath() call
// o issue a closePath() call
//
// Do NOT use when drawing the bars initially - the .coords array
// must already be populated.
//
this.pathBar = function (index)
{
// Path the outer edge
this.path(
'a % % % % % false',
this.coords[index].x,
this.coords[index].y,
this.coords[index].radiusOuter,
0 - RGraph.HALFPI,
this.coords[index].angleEnd
);
// Get the center x/y coords of the end of the bar
var xy = RGraph.getRadiusEndPoint({
cx: this.centerx,
cy: this.centery,
angle: this.coords[index].angleEnd,
radius: this.coords[index].radiusInner + ((this.coords[index].radiusOuter - this.coords[index].radiusInner) / 2)
});
// Path the ending curved end if the ends are round
if (properties.ends === 'round') {
this.path(
'a % % % % % false',
xy[0],
xy[1],
this.width / 2,
this.coords[index].angleEnd,
this.coords[index].angleEnd + RGraph.PI
);
}
// Path the inner edge
this.path(
'a % % % % % true',
this.coords[index].x,
this.coords[index].y,
this.coords[index].radiusInner,
this.coords[index].angleEnd,
this.coords[index].angleStart
);
// Path the starting curved end if the ends are round
if (properties.ends === 'round') {
this.path(
'a % % % % % false',
this.centerx,
this.centery - this.coords[index].radiusInner - ((this.coords[index].radiusOuter - this.coords[index].radiusInner) / 2),
this.width / 2,
RGraph.HALFPI,
RGraph.PI + RGraph.HALFPI
);
}
};
//
// A worker function that handles Activity chart specific tooltip substitutions
//
this.tooltipSubstitutions = function (opt)
{
return {
index: opt.index,
dataset: 0,
sequentialIndex: opt.index,
value: this.value[opt.index],
values: this.value
};
};
//
// 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)
{
return {
label: properties.tooltipsFormattedKeyLabels[index]
};
};
//
// 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];
//cx,cy,angle,radius
var point = RGraph.getRadiusEndPoint({
cx: this.centerx,
cy: this.centery,
radius: ((coords.radiusOuter - coords.radiusInner) / 2) + coords.radiusInner,
angle: ((coords.angleEnd - coords.angleStart) / 2) + (0 - RGraph.HALFPI)
});
// Position the tooltip in the X direction
//args.tooltip.style.left = point[0] - (tooltip.offsetWidth / 2) + 'px';
args.tooltip.style.left =
canvasXY[0]
+ point[0]
- (tooltip.offsetWidth / 2)
+ obj.properties.tooltipsOffsetx
+ 'px';
args.tooltip.style.top =
canvasXY[1]
+ point[1]
- tooltip.offsetHeight
- 10
+ obj.properties.tooltipsOffsety
+ '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 = 5 + 'px';
}
};
//
// This allows for easy specification of gradients
//
this.parseColors = function ()
{
// Save the original colors so that they can be restored when the canvas is reset
if (this.original_colors.length === 0) {
this.original_colors.backgroundColor = RGraph.arrayClone(properties.backgroundColor);
this.original_colors.colors = RGraph.arrayClone(properties.colors);
}
// Parse the background color
properties.backgroundColor = this.parseSingleColorForGradient(properties.backgroundColor);
// Parse colors
var colors = properties.colors;
if (colors && colors.length) {
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForGradient(colors[i]);
}
}
};
//
// 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)) {
// Allow for JSON gradients
if (color.match(/^gradient\(({.*})\)$/i)) {
return RGraph.parseJSONGradient({
object: this,
def: RegExp.$1,
radial: true
});
}
var parts = RegExp.$1.split(':');
// Create the gradient
var grad = this.context.createLinearGradient(
properties.marginLeft,
0,
this.canvas.width - properties.marginLeft - properties.marginRight,
0
);
var diff = 1 / (parts.length - 1);
grad.addColorStop(0, RGraph.trim(parts[0]));
for (var j=1,len=parts.length; j<len; ++j) {
grad.addColorStop(j * diff, RGraph.trim(parts[j]));
}
}
return grad ? grad : color;
};
//
// 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 ()
{
};
//
// Activity chart Grow effect
//
// This effect gradually increases the represented value
//
// @param An object of options - eg: {frames: 60}
// @param function An optional callback function
//
this.grow = function ()
{
// Cancel any stop request if one is pending
this.cancelStopAnimation();
var obj = this;
//
// Convert the value to an array if its a number
//
if (typeof this.value === 'number') {
this.value = [this.value];
}
//this.currentValue = this.currentValue || obj.min;
if (RGraph.isNull(this.currentValue)) {
this.currentValue=[];
for (var i=0; i<this.value.length; ++i) {
this.currentValue[i] = this.min;
}
}
var opt = arguments[0] || {},
frames = opt.frames || 30,
frame = 0,
diff = [],
step = [],
callback = arguments[1] || function () {},
initial = [];
// Set a few properties too by looping through the data
for (var i=0; i<this.value.length; ++i) {
diff[i] = this.value[i] - this.currentValue[i];
step[i] = diff[i] / frames;
initial[i] = this.currentValue[i];
}
function iterator ()
{
if (obj.stopAnimationRequested) {
// Reset the flag
obj.stopAnimationRequested = false;
return;
}
for (var i=0; i<obj.value.length; ++i) {
obj.value[i] = initial[i] + (frame * step[i]);
}
// Increment the frame
frame++;
RGraph.clear(obj.canvas);
RGraph.redrawCanvas(obj.canvas);
if (frame <= frames) {
RGraph.Effects.updateCanvas(iterator);
} else {
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;
};
//
// This function handles clipping to scale values. Because
// each chart handles scales differently, a worker function
// is needed instead of it all being done centrally in the
// RGraph.clipTo.start() function.
//
// @param string clip The clip string as supplied by the
// user in the chart configuration
//
this.clipToScaleWorker = function (clip)
{
// The Regular expression is actually done by the
// calling RGraph.clipTo.start() function in the core
// library
if (RegExp.$1 === 'min') from = this.min; else from = Number(RegExp.$1);
if (RegExp.$2 === 'max') to = this.max; else to = Number(RegExp.$2);
var a1 = this.getAngle(from),
a2 = this.getAngle(to);
// Change the radius if the number is "min"
if (RegExp.$1 === 'min') {
a1 = this.getAngle(this.min);
}
// Change the radius if the number is "max"
if (RegExp.$2 === 'max') {
a2 = this.getAngle(this.max);
}
this.path(
'sa b m % % a % % % % % false c cl',
this.centerx,
this.centery,
this.centerx,
this.centery,
Math.max(this.canvas.width, this.canvas.height),
a1, a2
);
};
//
// This function handles TESTING clipping to scale values.
// Because each chart handles scales differently, a worker
// function is needed instead of it all being done
// centrally in the RGraph.clipTo.start() function.
//
// @param string clip The clip string as supplied by the
// user in the chart configuration
//
this.clipToScaleTestWorker = function (clip)
{
// The Regular expression is actually done by the
// calling RGraph.clipTo.start() function in the core
// library
if (RegExp.$1 === 'min') from = this.min; else from = Number(RegExp.$1);
if (RegExp.$2 === 'max') to = this.max; else to = Number(RegExp.$2);
var a1 = this.getAngle(from),
a2 = this.getAngle(to);
// Change the radius if the number is "min"
if (RegExp.$1 === 'min') {
a1 = this.getAngle(this.min);
}
// Change the radius if the number is "max"
if (RegExp.$2 === 'max') {
a2 = this.getAngle(this.max);
}
this.path(
'b m % % a % % % % % false c',
this.centerx,
this.centery,
this.centerx,
this.centery,
Math.max(this.canvas.width, this.canvas.height),
a1, a2
);
};
//
// Register 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);
};