// 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 Fuel widget constructor
//
RGraph.Fuel = function (conf)
{
var id = conf.id,
canvas = document.getElementById(id),
min = conf.min,
max = conf.max,
value = conf.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 = 'fuel';
this.isRGraph = true;
this.isrgraph = true;
this.rgraph = true;
this.min = RGraph.stringsToNumbers(min);
this.max = RGraph.stringsToNumbers(max);
this.value = RGraph.stringsToNumbers(value);
this.angles = {};
this.currentValue = null;
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
this.stopAnimationRequested = false;// Used to control the animations
// Check for support
if (!this.canvas) {
alert('[FUEL] No canvas support');
return;
}
//
// The funnel charts properties
//
this.properties =
{
centerx: null,
centery: null,
radius: null,
colors: ['red'],
needleColor: 'red',
needleRadiusOffset: 45,
marginLeft: 5,
marginRight: 5,
marginTop: 5,
marginBottom: 5,
textSize: 12,
textColor: 'black', // Does not support gradients
textFont: 'Arial, Verdana, sans-serif',
textBold: false,
textItalic: false,
textAccessible: false,
textAccessibleOverflow: 'visible',
textAccessiblePointerevents: false,
text: null,
contextmenu: null,
annotatable: false,
annotatableColor: 'black',
adjustable: false,
resizable: false,
resizableHandleBackground: null,
icon: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABwAAAAfCAYAAAD0ma06AAAEGElEQVRIS7VXSyhtYRT+jnfe5FEMjAwUBiQGHikzRWIkkgy8YyDK+xnJK5JCeZSUGKBMiAyYkMxMJAMpSfJ+2/d8695/33NunSPnHqt2Z5+91/9/' + '/' + '/et9a/1b8Pn56dmMBhg/IWDgwNoNzc38PHxkXtN0+Tiexp9eH18fIDj1Bj63N/fw8vLS/wsmcHoqKmXT09PuL29RVFREU5OTvTJ6UIAgioQ+vLe09MTb29v8PX1RWBgICYnJ+XXIqDRWXN0dJT3nIDsWlpadP+lpSWZlD4KmL/8/' + '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',
iconRedraw: true,
backgroundImageStretch: false,
backgroundImageX: null,
backgroundImageY: null,
backgroundImageW: null,
backgroundImageH: null,
backgroundImagealign: null,
labelsFull: 'F',
labelsFullOffsetx: 0,
labelsFullOffsety: 0,
labelsFullOffsetRadius: 0,
labelsEmpty: 'E',
labelsEmptyOffsetx: 0,
labelsEmptyOffsety: 0,
labelsEmptyOffsetRadius: 0,
labelsFont: null,
labelsSize: null,
labelsColor: null,
labelsBold: null,
labelsItalic: null,
scaleVisible: false,
scaleDecimals: 0,
scaleUnitsPre: '',
scaleUnitsPost: '',
scalePoint: '.',
scaleThousand: ',',
scaleLabelsCount: 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;
}
}
//
// Bounds checking - if the value is outside the scale
//
if (this.value > this.max) this.value = this.max;
if (this.value < this.min) this.value = this.min;
// 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 === 'needleColor'
) {
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!
//
if (!this.canvas.__rgraph_aa_translated__) {
this.context.translate(0.5,0.5);
this.canvas.__rgraph_aa_translated__ = true;
}
//
// Set the current value
//
this.currentValue = this.value;
//
// Make the margins easy ro access
//
this.marginLeft = properties.marginLeft;
this.marginRight = properties.marginRight;
this.marginTop = properties.marginTop;
this.marginBottom = properties.marginBottom;
//
// Get the center X and Y of the chart. This is the center of the needle bulb
//
this.centerx = ((this.canvas.width - this.marginLeft - this.marginRight) / 2) + this.marginLeft;
this.centery = this.canvas.height - 20 - this.marginBottom
//
// Work out the radius of the chart
//
this.radius = this.canvas.height - this.marginTop - this.marginBottom - 20;
//
// Stop this growing uncntrollably
//
this.coordsText = [];
//
// You can now specify chart.centerx, chart.centery and chart.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 properties.radius === 'string' && properties.radius.match(/^\+|-\d+$/) ) this.radius += parseFloat(properties.radius);
if (typeof properties.centerx === 'string' && properties.centerx.match(/^\+|-\d+$/) ) this.centerx += parseFloat(properties.centerx);
if (typeof properties.centery === 'string' && properties.centery.match(/^\+|-\d+$/) ) this.centery += parseFloat(properties.centery);
//
// Parse the colors. This allows for simple gradient syntax
//
if (!this.colorsParsed) {
this.parseColors();
// Don't want to do this again
this.colorsParsed = true;
}
//
// The start and end angles of the chart
//
this.angles.start = (RGraph.PI + RGraph.HALFPI) - 0.5;
this.angles.end = (RGraph.PI + RGraph.HALFPI) + 0.5;
this.angles.needle = this.getAngle(this.value);
//
// Install clipping
//
if (!RGraph.isNullish(this.properties.clip)) {
RGraph.clipTo.start(this, this.properties.clip);
}
//
// Draw the labels on the chart
//
this.drawLabels();
//
// Draw the fuel guage
//
this.drawChart();
//
// 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.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;
};
//
// 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.drawChart = function ()
{
//
// Draw the "Scale"
//
this.drawScale();
// Place the icon on the canvas
this.drawIcon();
//
// Draw the needle
//
this.drawNeedle();
};
//
// Draws the labels
//
this.drawLabels = function ()
{
if (!properties.scaleVisible) {
var radius = (this.radius - 20);
this.context.fillStyle = properties.textColor;
// Draw the left label
var y = this.centery - Math.sin(this.angles.start - RGraph.PI) * (this.radius - 17 + properties.labelsEmptyOffsetRadius);
var x = this.centerx - Math.cos(this.angles.start - RGraph.PI) * (this.radius - 17 + properties.labelsEmptyOffsetRadius);
// Get the text configuration
var textConf = RGraph.getTextConf({
object: this,
prefix: 'labels'
});
var ret = RGraph.text({
object: this,
font: textConf.font,
size: textConf.size,
color: textConf.color,
bold: textConf.bold,
italic: textConf.italic,
x: x + properties.labelsEmptyOffsetx,
y: y + properties.labelsEmptyOffsety,
text: properties.labelsEmpty,
halign: 'left',
valign: 'top',
tag: 'labels',
cssClass: RGraph.getLabelsCSSClassName({
object: this,
name: 'labelsClass',
index: 0
})
});
// Draw the right label
var y = this.centery - Math.sin(this.angles.start - RGraph.PI) * (this.radius - 17 + properties.labelsFullOffsetRadius);
var x = this.centerx + Math.cos(this.angles.start - RGraph.PI) * (this.radius - 17 + properties.labelsFullOffsetRadius);
var ret = RGraph.text({
object: this,
font: textConf.font,
size: textConf.size,
color: textConf.color,
bold: textConf.bold,
italic: textConf.italic,
x: x + properties.labelsFullOffsetx,
y: y + properties.labelsFullOffsety,
text: properties.labelsFull,
halign: 'right',
valign: 'top',
tag: 'labels',
cssClass: RGraph.getLabelsCSSClassName({
object: this,
name: 'labelsClass',
index: 1
})
});
}
// Add any CSS class to the text
var className = '';
if (typeof properties.labelsClass === 'string') {
className = properties.labelsClass;
} else if (typeof properties.labelsClass === 'object' && typeof properties.labelsClass[1] === 'string') {
className = properties.labelsClass[1];
}
if (className && ret.node.className.indexOf(className) === -1) {
ret.node.className += ' ' + className;
}
};
//
// Draws the needle
//
this.drawNeedle = function ()
{
// Draw the needle
this.context.beginPath();
this.context.lineWidth = 5;
this.context.lineCap = 'round';
this.context.strokeStyle = properties.needleColor;
//
// The angle for the needle
//
var angle = this.angles.needle;
this.context.arc(this.centerx, this.centery, this.radius - properties.needleRadiusOffset, angle, angle + 0.0001, false);
this.context.lineTo(this.centerx, this.centery);
this.context.stroke();
this.context.lineWidth = 1;
// Create the gradient for the bulb
var cx = this.centerx + 10;
var cy = this.centery - 10
var grad = this.context.createRadialGradient(cx, cy, 35, cx, cy, 0);
grad.addColorStop(0, 'black');
grad.addColorStop(1, '#eee');
if (navigator.userAgent.indexOf('Firefox/6.0') > 0) {
grad = this.context.createLinearGradient(cx + 10, cy - 10, cx - 10, cy + 10);
grad.addColorStop(1, '#666');
grad.addColorStop(0.5, '#ccc');
}
// Draw the bulb
this.context.beginPath();
this.context.fillStyle = grad;
this.context.moveTo(this.centerx, this.centery);
this.context.arc(this.centerx, this.centery, 20, 0, RGraph.TWOPI, 0);
this.context.fill();
};
//
// Draws the "scale"
//
this.drawScale = function ()
{
var a, x, y;
//First draw the fill background
this.context.beginPath();
this.context.strokeStyle = 'black';
this.context.fillStyle = 'white';
this.context.arc(this.centerx, this.centery, this.radius, this.angles.start, this.angles.end, false);
this.context.arc(this.centerx, this.centery, this.radius - 10, this.angles.end, this.angles.start, true);
this.context.closePath();
this.context.stroke();
this.context.fill();
//First draw the fill itself
var start = this.angles.start;
var end = this.angles.needle;
this.context.beginPath();
this.context.fillStyle = properties.colors[0];
this.context.arc(this.centerx, this.centery, this.radius, start, end, false);
this.context.arc(this.centerx, this.centery, this.radius - 10, end, start, true);
this.context.closePath();
//this.context.stroke();
this.context.fill();
// This draws the tickmarks
for (a = this.angles.start; a<=this.angles.end + 0.01; a+=((this.angles.end - this.angles.start) / 5)) {
this.context.beginPath();
this.context.arc(this.centerx, this.centery, this.radius - 10, a, a + 0.0001, false);
this.context.arc(this.centerx, this.centery, this.radius - 15, a + 0.0001, a, true);
this.context.stroke();
}
//
// If chart.scale.visible is specified draw the textual scale
//
if (properties.scaleVisible) {
this.context.fillStyle = properties.textColor;
// The labels
var numLabels = properties.scaleLabelsCount;
var decimals = properties.scaleDecimals;
var units_post = properties.scaleUnitsPost;
var units_pre = properties.scaleUnitsPre;
var font = properties.textFont;
var size = properties.textSize;
var color = properties.textColor;
var bold = properties.textBold;
var italic = properties.textItalic;
for (var i=0; i<=numLabels; ++i) {
a = ((this.angles.end - this.angles.start) * (i/numLabels)) + this.angles.start;
y = this.centery - Math.sin(a - RGraph.PI) * (this.radius - 17);
x = this.centerx - Math.cos(a - RGraph.PI) * (this.radius - 17);
// Get the text configuration
var textConf = RGraph.getTextConf({
object: this,
prefix: 'labels'
});
RGraph.text({
object: this,
font: textConf.font,
size: textConf.size,
color: textConf.color,
bold: textConf.bold,
italic: textConf.italic,
x: x,
y: y,
text: RGraph.numberFormat({
object: this,
number: (this.min + ((this.max - this.min) * (i/numLabels))).toFixed(decimals),
unitspre: units_pre,
unitspost: units_post,
point: properties.scalePoint,
thousand: properties.scaleThousand
}),
halign: 'center',
valign: 'top',
tag: 'scale'
});
}
}
};
//
// A placeholder function that is here to prevent errors
//
this.getShape = function (e) {};
//
// This function returns the pertinent value based on a click
//
// @param object e An event object
// @return number The relevant value at the point of click
//
this.getValue = function (e)
{
var mouseXY = RGraph.getMouseXY(e);
var angle = RGraph.getAngleByXY(this.centerx, this.centery, mouseXY[0], mouseXY[1]);
//
// Boundary checking
//
if (angle >= this.angles.end) {
return this.max;
} else if (angle <= this.angles.start) {
return this.min;
}
var value = (angle - this.angles.start) / (this.angles.end - this.angles.start);
value = value * (this.max - this.min);
value = value + this.min;
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);
var angle = RGraph.getAngleByXY(this.centerx, this.centery, mouseXY[0], mouseXY[1]);
var accuracy = 15;
var leftMin = this.centerx - this.radius;
var rightMax = this.centerx + this.radius;
var topMin = this.centery - this.radius;
var bottomMax = this.centery + this.radius;
if (
mouseXY[0] > leftMin
&& mouseXY[0] < rightMax
&& mouseXY[1] > topMin
&& mouseXY[1] < bottomMax
) {
return this;
}
};
//
// Draws the icon
//
this.drawIcon = function ()
{
if (!this.__icon__ || !this.__icon__.__loaded__) {
var img = new Image();
img.src = properties.icon;
img.__object__ = this;
this.__icon__ = img;
img.onload = function (e)
{
img.__loaded__ = true;
var obj = img.__object__;
obj.context.drawImage(img,obj.centerx - (img.width / 2), obj.centery - obj.radius + 35);
obj.drawNeedle();
if (properties.iconRedraw) {
obj.set('iconRedraw', false);
RGraph.clear(obj.canvas);
RGraph.redrawCanvas(obj.canvas);
}
}
} else {
var img = this.__icon__;
this.context.drawImage(img,this.centerx - (img.width / 2), this.centery - this.radius + 35);
}
this.drawNeedle();
};
//
// 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 Fuel gauge
//
if (properties.adjustable && RGraph.Registry.get('adjusting') && RGraph.Registry.get('adjusting').uid == this.uid) {
this.value = this.getValue(e);
RGraph.redrawCanvas(this.canvas);
RGraph.fireCustomEvent(this, 'onadjust');
}
};
//
// This method gives you the relevant angle (in radians) that a particular value is
//
// @param number value The relevant angle
//
this.getAngle = function (value)
{
// Range checking
if (value < this.min || value > this.max) {
return null;
}
var angle = (((value - this.min) / (this.max - this.min)) * (this.angles.end - this.angles.start)) + this.angles.start;
return angle;
};
//
// 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.needleColor = RGraph.arrayClone(properties.needleColor);
}
var colors = properties.colors;
for (var i=0; i<colors.length; ++i) {
colors[i] = this.parseSingleColorForLinearGradient(colors[i]);
}
properties.needleColor = this.parseSingleColorForRadialGradient(properties.needleColor);
};
//
// 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.parseSingleColorForLinearGradient = 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.parseSingleColorForRadialGradient = 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.createRadialGradient(this.centerx, this.centery, 0, this.centerx, this.centery, this.radius);
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;
};
//
// 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 ()
{
};
//
// Grow
//
// The Fuel chart Grow effect gradually increases the values
// of the Fuel chart
//
this.grow = function ()
{
// Cancel any stop request if one is pending
this.cancelStopAnimation();
var callback = arguments[1] || function () {};
var opt = arguments[0] || {};
var numFrames = opt.frames || 30;
var frame = 0;
var obj = this;
var origValue = Number(this.currentValue);
if (this.currentValue == null) {
this.currentValue = this.min;
origValue = this.min;
}
var newValue = this.value;
var diff = newValue - origValue;
var step = (diff / numFrames);
var frame = 0;
function iterator ()
{
if (obj.stopAnimationRequested) {
// Reset the flag
obj.stopAnimationRequested = false;
return;
}
frame++;
obj.value = ((frame / numFrames) * diff) + origValue
if (obj.value > obj.max) obj.value = obj.max;
if (obj.value < obj.min) obj.value = obj.min;
RGraph.clear(obj.canvas);
RGraph.redrawCanvas(obj.canvas);
if (frame < numFrames) {
RGraph.Effects.updateCanvas(iterator);
// The callback variable is always function
} 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 = RGraph.HALFPI;
}
// Change the radius if the number is "max"
if (RegExp.$2 === 'max') {
a2 = RGraph.TWOPI + RGraph.HALFPI;
}
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
);
};
//
// Now need to register all chart types. MUST be after the setters/getters are defined
//
// *** MUST BE LAST IN THE CONSTRUCTOR ***
//
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);
};