mirrors/pfsense
2
0
Fork 0
mirror of https://github.com/pfsense/pfsense.git synced 2025-10-26 11:38:35 +00:00
Code Issues Packages Projects Releases Wiki Activity
88165371ef
pfsense/usr/local/www/protochart/ProtoChart.js

2653 lines
78 KiB
JavaScript
Raw Blame History

/**
* Class: ProtoChart
* Version: v0.5 beta
*
* ProtoChart is a charting lib on top of Prototype.
* This library is heavily motivated by excellent work done by:
* * Flot <http://code.google.com/p/flot/>
* * Flotr <http://solutoire.com/flotr/>
*
* Complete examples can be found at: <http://www.deensoft.com/lab/protochart>
*/
/**
* Events:
* ProtoChart:mousemove - Fired when mouse is moved over the chart
* ProtoChart:plotclick - Fired when graph is clicked
* ProtoChart:dataclick - Fired when graph is clicked AND the click is on a data point
* ProtoChart:selected - Fired when certain region on the graph is selected
* ProtoChart:hit - Fired when mouse is moved near or over certain data point on the graph
*/
if(!Proto) var Proto = {};
Proto.Chart = Class.create({
/**
* Function:
* {Object} elem
* {Object} data
* {Object} options
*/
initialize: function(elem, data, options)
{
options = options || {};
this.graphData = [];
/**
* Property: options
*
* Description: Various options can be set. More details in description.
*
* colors:
* {Array} - pass in a array which contains strings of colors you want to use. Default has 6 color set.
*
* legend:
* {BOOL} - show - if you want to show the legend. Default is false
* {integer} - noColumns - Number of columns for the legend. Default is 1
* {function} - labelFormatter - A function that returns a string. The function is called with a string and is expected to return a string. Default = null
* {string} - labelBoxBorderColor - border color for the little label boxes. Default #CCC
* {HTMLElem} - container - an HTML id or HTML element where the legend should be rendered. If left null means to put the legend on top of the Chart
* {string} - position - position for the legend on the Chart. Default value 'ne'
* {integer} - margin - default valud of 5
* {string} - backgroundColor - default to null (which means auto-detect)
* {float} - backgroundOpacity - leave it 0 to avoid background
*
* xaxis (yaxis) options:
* {string} - mode - default is null but you can pass a string "time" to indicate time series
* {integer} - min
* {integer} - max
* {float} - autoscaleMargin - in % to add if auto-setting min/max
* {mixed} - ticks - either [1, 3] or [[1, "a"], 3] or a function which gets axis info and returns ticks
* {function} - tickFormatter - A function that returns a string as a tick label. Default is null
* {float} - tickDecimals
* {integer} - tickSize
* {integer} - minTickSize
* {array} - monthNames
* {string} - timeformat
*
* Points / Lines / Bars options:
* {bool} - show, default is false
* {integer} - radius: default is 3
* {integer} - lineWidth : default is 2
* {bool} - fill : default is true
* {string} - fillColor: default is #ffffff
*
* Grid options:
* {string} - color
* {string} - backgroundColor - defualt is *null*
* {string} - tickColor - default is *#dddddd*
* {integer} - labelMargin - should be in pixels default is 3
* {integer} - borderWidth - default *1*
* {bool} - clickable - default *null* - pass in TRUE if you wish to monitor click events
* {mixed} - coloredAreas - default *null* - pass in mixed object eg. {x1, x2}
* {string} - coloredAreasColor - default *#f4f4f4*
* {bool} - drawXAxis - default *true*
* {bool} - drawYAxis - default *true*
*
* selection options:
* {string} - mode : either "x", "y" or "xy"
* {string} - color : string
*/
this.options = this.merge(options,{
colors: ["#edc240", "#00A8F0", "#C0D800", "#cb4b4b", "#4da74d", "#9440ed"],
legend: {
show: false,
noColumns: 1,
labelFormatter: null,
labelBoxBorderColor: "#ccc",
container: null,
position: "ne",
margin: 5,
backgroundColor: null,
backgroundOpacity: 0.85
},
xaxis: {
mode: null,
min: null,
max: null,
autoscaleMargin: null,
ticks: null,
tickFormatter: null,
tickDecimals: null,
tickSize: null,
minTickSize: null,
monthNames: null,
timeformat: null
},
yaxis: {
mode: null,
min: null,
max: null,
ticks: null,
tickFormatter: null,
tickDecimals: null,
tickSize: null,
minTickSize: null,
monthNames: null,
timeformat: null,
autoscaleMargin: 0.02
},
points: {
show: false,
radius: 3,
lineWidth: 2,
fill: true,
fillColor: "#ffffff"
},
lines: {
show: false,
lineWidth: 2,
fill: false,
fillColor: null
},
bars: {
show: false,
lineWidth: 2,
barWidth: 1,
fill: true,
fillColor: null,
showShadow: false,
fillOpacity: 0.4,
autoScale: true
},
pies: {
show: false,
radius: 50,
borderWidth: 1,
fill: true,
fillColor: null,
fillOpacity: 0.90,
labelWidth: 30,
fontSize: 11,
autoScale: true
},
grid: {
color: "#545454",
backgroundColor: null,
tickColor: "#dddddd",
labelMargin: 3,
borderWidth: 1,
clickable: null,
coloredAreas: null,
coloredAreasColor: "#f4f4f4",
drawXAxis: true,
drawYAxis: true
},
mouse: {
track: false,
position: 'se',
fixedPosition: true,
clsName: 'mouseValHolder',
trackFormatter: this.defaultTrackFormatter,
margin: 3,
color: '#ff3f19',
trackDecimals: 1,
sensibility: 2,
radius: 5,
lineColor: '#cb4b4b'
},
selection: {
mode: null,
color: "#97CBFF"
},
allowDataClick: true,
makeRandomColor: false,
shadowSize: 4
});
/*
* Local variables.
*/
this.canvas = null;
this.overlay = null;
this.eventHolder = null;
this.context = null;
this.overlayContext = null;
this.domObj = $(elem);
this.xaxis = {};
this.yaxis = {};
this.chartOffset = {left: 0, right: 0, top: 0, bottom: 0};
this.yLabelMaxWidth = 0;
this.yLabelMaxHeight = 0;
this.xLabelBoxWidth = 0;
this.canvasWidth = 0;
this.canvasHeight = 0;
this.chartWidth = 0;
this.chartHeight = 0;
this.hozScale = 0;
this.vertScale = 0;
this.workarounds = {};
this.domObj = $(elem);
this.barDataRange = [];
this.lastMousePos = { pageX: null, pageY: null };
this.selection = { first: { x: -1, y: -1}, second: { x: -1, y: -1} };
this.prevSelection = null;
this.selectionInterval = null;
this.ignoreClick = false;
this.prevHit = null;
if(this.options.makeRandomColor)
this.options.color = this.makeRandomColor(this.options.colors);
this.setData(data);
this.constructCanvas();
this.setupGrid();
this.draw();
},
/**
* Private function internally used.
*/
merge: function(src, dest)
{
var result = dest || {};
for(var i in src){
result[i] = (typeof(src[i]) == 'object' && !(src[i].constructor == Array || src[i].constructor == RegExp)) ? this.merge(src[i], dest[i]) : result[i] = src[i];
}
return result;
},
/**
* Function: setData
* {Object} data
*
* Description:
* Sets datasoruces properly then sets the Bar Width accordingly, then copies the default data options and then processes the graph data
*
* Returns: none
*
*/
setData: function(data)
{
this.graphData = this.parseData(data);
this.setBarWidth();
this.copyGraphDataOptions();
this.processGraphData();
},
/**
* Function: parseData
* {Object} data
*
* Return:
* {Object} result
*
* Description:
* Takes the provided data object and converts it into generic data that we can understand. User can pass in data in 3 different ways:
* - [d1, d2]
* - [{data: d1, label: "data1"}, {data: d2, label: "data2"}]
* - [d1, {data: d1, label: "data1"}]
*
* This function parses these senarios and makes it readable
*/
parseData: function(data)
{
var res = [];
data.each(function(d){
var s;
if(d.data) {
s = {};
for(var v in d) {
s[v] = d[v];
}
}
else {
s = {data: d};
}
res.push(s);
}.bind(this));
return res;
},
/**
* function: makeRandomColor
* {Object} colorSet
*
* Return:
* {Array} result - array containing random colors
*/
makeRandomColor: function(colorSet)
{
var randNum = Math.floor(Math.random() * colorSet.length);
var randArr = [];
var newArr = [];
randArr.push(randNum);
while(randArr.length < colorSet.length)
{
var tempNum = Math.floor(Math.random() * colorSet.length);
while(checkExisted(tempNum, randArr))
tempNum = Math.floor(Math.random() * colorSet.length);
randArr.push(tempNum);
}
randArr.each(function(ra){
newArr.push(colorSet[ra]);
}.bind(this));
return newArr;
},
/**
* function: checkExisted
* {Object} needle
* {Object} haystack
*
* return:
* {bool} existed - true if it finds needle in the haystack
*/
checkExisted: function(needle, haystack)
{
var existed = false;
haystack.each(function(aNeedle){
if(aNeedle == needle) {
existed = true;
throw $break;
}
}.bind(this));
return existed;
},
/**
* function: setBarWidth
*
* Description: sets the bar width for Bar Graph, you should enable *autoScale* property for bar graph
*/
setBarWidth: function()
{
if(this.options.bars.show && this.options.bars.autoScale)
{
this.options.bars.barWidth = 1 / this.graphData.length / 1.2;
}
},
/**
* Function: copyGraphDataOptions
*
* Description: Private function that goes through each graph data (series) and assigned the graph
* properties to it.
*/
copyGraphDataOptions: function()
{
var i, neededColors = this.graphData.length, usedColors = [], assignedColors = [];
this.graphData.each(function(gd){
var sc = gd.color;
if(sc) {
--neededColors;
if(Object.isNumber(sc)) {
assignedColors.push(sc);
}
else {
usedColors.push(this.parseColor(sc));
}
}
}.bind(this));
assignedColors.each(function(ac){
neededColors = Math.max(neededColors, ac + 1);
});
var colors = [];
var variation = 0;
i = 0;
while (colors.length < neededColors) {
var c;
if (this.options.colors.length == i) {
c = new Proto.Color(100, 100, 100);
}
else {
c = this.parseColor(this.options.colors[i]);
}
var sign = variation % 2 == 1 ? -1 : 1;
var factor = 1 + sign * Math.ceil(variation / 2) * 0.2;
c.scale(factor, factor, factor);
colors.push(c);
++i;
if (i >= this.options.colors.length) {
i = 0;
++variation;
}
}
var colorIndex = 0, s;
this.graphData.each(function(gd){
if(gd.color == null)
{
gd.color = colors[colorIndex].toString();
++colorIndex;
}
else if(Object.isNumber(gd.color)) {
gd.color = colors[gd.color].toString();
}
gd.lines = Object.extend(Object.clone(this.options.lines), gd.lines);
gd.points = Object.extend(Object.clone(this.options.points), gd.points);
gd.bars = Object.extend(Object.clone(this.options.bars), gd.bars);
gd.mouse = Object.extend(Object.clone(this.options.mouse), gd.mouse);
if (gd.shadowSize == null) {
gd.shadowSize = this.options.shadowSize;
}
}.bind(this));
},
/**
* Function: processGraphData
*
* Description: processes graph data, setup xaxis and yaxis min and max points.
*/
processGraphData: function() {
this.xaxis.datamin = this.yaxis.datamin = Number.MAX_VALUE;
this.xaxis.datamax = this.yaxis.datamax = Number.MIN_VALUE;
this.graphData.each(function(gd) {
var data = gd.data;
data.each(function(d){
if(d == null) {
return;
}
var x = d[0], y = d[1];
if(!x || !y || isNaN(x = +x) || isNaN(y = +y)) {
d = null;
return;
}
if (x < this.xaxis.datamin)
this.xaxis.datamin = x;
if (x > this.xaxis.datamax)
this.xaxis.datamax = x;
if (y < this.yaxis.datamin)
this.yaxis.datamin = y;
if (y > this.yaxis.datamax)
this.yaxis.datamax = y;
}.bind(this));
}.bind(this));
if (this.xaxis.datamin == Number.MAX_VALUE)
this.xaxis.datamin = 0;
if (this.yaxis.datamin == Number.MAX_VALUE)
this.yaxis.datamin = 0;
if (this.xaxis.datamax == Number.MIN_VALUE)
this.xaxis.datamax = 1;
if (this.yaxis.datamax == Number.MIN_VALUE)
this.yaxis.datamax = 1;
},
/**
* Function: constructCanvas
*
* Description: constructs the main canvas for drawing. It replicates the HTML elem (usually DIV) passed
* in via constructor. If there is no height/width assigned to the HTML elem then we take a default size
* of 400px (width) and 300px (height)
*/
constructCanvas: function() {
this.canvasWidth = this.domObj.getWidth();
this.canvasHeight = this.domObj.getHeight();
this.domObj.update(""); // clear target
this.domObj.setStyle({
"position": "relative"
});
if (this.canvasWidth <= 0) {
this.canvasWdith = 400;
}
if(this.canvasHeight <= 0) {
this.canvasHeight = 300;
}
this.canvas = (Prototype.Browser.IE) ? document.createElement("canvas") : new Element("CANVAS", {'width': this.canvasWidth, 'height': this.canvasHeight});
Element.extend(this.canvas);
this.canvas.style.width = this.canvasWidth + "px";
this.canvas.style.height = this.canvasHeight + "px";
this.domObj.appendChild(this.canvas);
if (Prototype.Browser.IE) // excanvas hack
{
this.canvas = $(window.G_vmlCanvasManager.initElement(this.canvas));
}
this.canvas = $(this.canvas);
this.context = this.canvas.getContext("2d");
this.overlay = (Prototype.Browser.IE) ? document.createElement("canvas") : new Element("CANVAS", {'width': this.canvasWidth, 'height': this.canvasHeight});
Element.extend(this.overlay);
this.overlay.style.width = this.canvasWidth + "px";
this.overlay.style.height = this.canvasHeight + "px";
this.overlay.style.position = "absolute";
this.overlay.style.left = "0px";
this.overlay.style.right = "0px";
this.overlay.setStyle({
'position': 'absolute',
'left': '0px',
'right': '0px'
});
this.domObj.appendChild(this.overlay);
if (Prototype.Browser.IE) {
this.overlay = $(window.G_vmlCanvasManager.initElement(this.overlay));
}
this.overlay = $(this.overlay);
this.overlayContext = this.overlay.getContext("2d");
if(this.options.selection.mode)
{
this.overlay.observe('mousedown', this.onMouseDown.bind(this));
this.overlay.observe('mousemove', this.onMouseMove.bind(this));
}
if(this.options.grid.clickable) {
this.overlay.observe('click', this.onClick.bind(this));
}
if(this.options.mouse.track)
{
this.overlay.observe('mousemove', this.onMouseMove.bind(this));
}
},
/**
* function: setupGrid
*
* Description: a container function that does a few interesting things.
*
* 1. calls <extendXRangeIfNeededByBar> function which makes sure that our axis are expanded if needed
*
* 2. calls <setRange> function providing xaxis options which fixes the ranges according to data points
*
* 3. calls <prepareTickGeneration> function for xaxis which generates ticks according to options provided by user
*
* 4. calls <setTicks> function for xaxis that sets the ticks
*
* similar sequence is called for y-axis.
*
* At the end if this is a pie chart than we insert Labels (around the pie chart) via <insertLabels> and we also call <insertLegend>
*/
setupGrid: function()
{
if(this.options.bars.show)
{
this.xaxis.max += 0.5;
this.xaxis.min -= 0.5;
}
//x-axis
this.extendXRangeIfNeededByBar();
this.setRange(this.xaxis, this.options.xaxis);
this.prepareTickGeneration(this.xaxis, this.options.xaxis);
this.setTicks(this.xaxis, this.options.xaxis);
//y-axis
this.setRange(this.yaxis, this.options.yaxis);
this.prepareTickGeneration(this.yaxis, this.options.yaxis);
this.setTicks(this.yaxis, this.options.yaxis);
this.setSpacing();
if(!this.options.pies.show)
{
this.insertLabels();
}
this.insertLegend();
},
/**
* function: setRange
*
* parameters:
* {Object} axis
* {Object} axisOptions
*/
setRange: function(axis, axisOptions) {
var min = axisOptions.min != null ? axisOptions.min : axis.datamin;
var max = axisOptions.max != null ? axisOptions.max : axis.datamax;
if (max - min == 0.0) {
// degenerate case
var widen;
if (max == 0.0)
widen = 1.0;
else
widen = 0.01;
min -= widen;
max += widen;
}
else {
// consider autoscaling
var margin = axisOptions.autoscaleMargin;
if (margin != null) {
if (axisOptions.min == null) {
min -= (max - min) * margin;
// make sure we don't go below zero if all values
// are positive
if (min < 0 && axis.datamin >= 0)
min = 0;
}
if (axisOptions.max == null) {
max += (max - min) * margin;
if (max > 0 && axis.datamax <= 0)
max = 0;
}
}
}
axis.min = min;
axis.max = max;
},
/**
* function: prepareTickGeneration
*
* Parameters:
* {Object} axis
* {Object} axisOptions
*/
prepareTickGeneration: function(axis, axisOptions) {
// estimate number of ticks
var noTicks;
if (Object.isNumber(axisOptions.ticks) && axisOptions.ticks > 0)
noTicks = axisOptions.ticks;
else if (axis == this.xaxis)
noTicks = this.canvasWidth / 100;
else
noTicks = this.canvasHeight / 60;
var delta = (axis.max - axis.min) / noTicks;
var size, generator, unit, formatter, i, magn, norm;
if (axisOptions.mode == "time") {
function formatDate(d, fmt, monthNames) {
var leftPad = function(n) {
n = "" + n;
return n.length == 1 ? "0" + n : n;
};
var r = [];
var escape = false;
if (monthNames == null)
monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
for (var i = 0; i < fmt.length; ++i) {
var c = fmt.charAt(i);
if (escape) {
switch (c) {
case 'h': c = "" + d.getHours(); break;
case 'H': c = leftPad(d.getHours()); break;
case 'M': c = leftPad(d.getMinutes()); break;
case 'S': c = leftPad(d.getSeconds()); break;
case 'd': c = "" + d.getDate(); break;
case 'm': c = "" + (d.getMonth() + 1); break;
case 'y': c = "" + d.getFullYear(); break;
case 'b': c = "" + monthNames[d.getMonth()]; break;
}
r.push(c);
escape = false;
}
else {
if (c == "%")
escape = true;
else
r.push(c);
}
}
return r.join("");
}
// map of app. size of time units in milliseconds
var timeUnitSize = {
"second": 1000,
"minute": 60 * 1000,
"hour": 60 * 60 * 1000,
"day": 24 * 60 * 60 * 1000,
"month": 30 * 24 * 60 * 60 * 1000,
"year": 365.2425 * 24 * 60 * 60 * 1000
};
// the allowed tick sizes, after 1 year we use
// an integer algorithm
var spec = [
[1, "second"], [2, "second"], [5, "second"], [10, "second"],
[30, "second"],
[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
[30, "minute"],
[1, "hour"], [2, "hour"], [4, "hour"],
[8, "hour"], [12, "hour"],
[1, "day"], [2, "day"], [3, "day"],
[0.25, "month"], [0.5, "month"], [1, "month"],
[2, "month"], [3, "month"], [6, "month"],
[1, "year"]
];
var minSize = 0;
if (axisOptions.minTickSize != null) {
if (typeof axisOptions.tickSize == "number")
minSize = axisOptions.tickSize;
else
minSize = axisOptions.minTickSize[0] * timeUnitSize[axisOptions.minTickSize[1]];
}
for (i = 0; i < spec.length - 1; ++i) {
if (delta < (spec[i][0] * timeUnitSize[spec[i][1]] + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
break;
}
}
size = spec[i][0];
unit = spec[i][1];
// special-case the possibility of several years
if (unit == "year") {
magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
norm = (delta / timeUnitSize.year) / magn;
if (norm < 1.5)
size = 1;
else if (norm < 3)
size = 2;
else if (norm < 7.5)
size = 5;
else
size = 10;
size *= magn;
}
if (axisOptions.tickSize) {
size = axisOptions.tickSize[0];
unit = axisOptions.tickSize[1];
}
var floorInBase = this.floorInBase; //gives us a reference to a global function..
generator = function(axis) {
var ticks = [],
tickSize = axis.tickSize[0], unit = axis.tickSize[1],
d = new Date(axis.min);
var step = tickSize * timeUnitSize[unit];
if (unit == "second")
d.setSeconds(floorInBase(d.getSeconds(), tickSize));
if (unit == "minute")
d.setMinutes(floorInBase(d.getMinutes(), tickSize));
if (unit == "hour")
d.setHours(floorInBase(d.getHours(), tickSize));
if (unit == "month")
d.setMonth(floorInBase(d.getMonth(), tickSize));
if (unit == "year")
d.setFullYear(floorInBase(d.getFullYear(), tickSize));
// reset smaller components
d.setMilliseconds(0);
if (step >= timeUnitSize.minute)
d.setSeconds(0);
if (step >= timeUnitSize.hour)
d.setMinutes(0);
if (step >= timeUnitSize.day)
d.setHours(0);
if (step >= timeUnitSize.day * 4)
d.setDate(1);
if (step >= timeUnitSize.year)
d.setMonth(0);
var carry = 0, v;
do {
v = d.getTime();
ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
if (unit == "month") {
if (tickSize < 1) {
d.setDate(1);
var start = d.getTime();
d.setMonth(d.getMonth() + 1);
var end = d.getTime();
d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
carry = d.getHours();
d.setHours(0);
}
else
d.setMonth(d.getMonth() + tickSize);
}
else if (unit == "year") {
d.setFullYear(d.getFullYear() + tickSize);
}
else
d.setTime(v + step);
} while (v < axis.max);
return ticks;
};
formatter = function (v, axis) {
var d = new Date(v);
// first check global format
if (axisOptions.timeformat != null)
return formatDate(d, axisOptions.timeformat, axisOptions.monthNames);
var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
var span = axis.max - axis.min;
if (t < timeUnitSize.minute)
fmt = "%h:%M:%S";
else if (t < timeUnitSize.day) {
if (span < 2 * timeUnitSize.day)
fmt = "%h:%M";
else
fmt = "%b %d %h:%M";
}
else if (t < timeUnitSize.month)
fmt = "%b %d";
else if (t < timeUnitSize.year) {
if (span < timeUnitSize.year)
fmt = "%b";
else
fmt = "%b %y";
}
else
fmt = "%y";
return formatDate(d, fmt, axisOptions.monthNames);
};
}
else {
// pretty rounding of base-10 numbers
var maxDec = axisOptions.tickDecimals;
var dec = -Math.floor(Math.log(delta) / Math.LN10);
if (maxDec != null && dec > maxDec)
dec = maxDec;
magn = Math.pow(10, -dec);
norm = delta / magn; // norm is between 1.0 and 10.0
if (norm < 1.5)
size = 1;
else if (norm < 3) {
size = 2;
// special case for 2.5, requires an extra decimal
if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
size = 2.5;
++dec;
}
}
else if (norm < 7.5)
size = 5;
else
size = 10;
size *= magn;
if (axisOptions.minTickSize != null && size < axisOptions.minTickSize)
size = axisOptions.minTickSize;
if (axisOptions.tickSize != null)
size = axisOptions.tickSize;
axis.tickDecimals = Math.max(0, (maxDec != null) ? maxDec : dec);
var floorInBase = this.floorInBase;
generator = function (axis) {
var ticks = [];
var start = floorInBase(axis.min, axis.tickSize);
// then spew out all possible ticks
var i = 0, v;
do {
v = start + i * axis.tickSize;
ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
++i;
} while (v < axis.max);
return ticks;
};
formatter = function (v, axis) {
if(v) {
return v.toFixed(axis.tickDecimals);
}
return 0;
};
}
axis.tickSize = unit ? [size, unit] : size;
axis.tickGenerator = generator;
if (Object.isFunction(axisOptions.tickFormatter))
axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); };
else
axis.tickFormatter = formatter;
},
/**
* function: extendXRangeIfNeededByBar
*/
extendXRangeIfNeededByBar: function() {
if (this.options.xaxis.max == null) {
// great, we're autoscaling, check if we might need a bump
var newmax = this.xaxis.max;
this.graphData.each(function(gd){
if(gd.bars.show && gd.bars.barWidth + this.xaxis.datamax > newmax)
{
newmax = this.xaxis.datamax + gd.bars.barWidth;
}
}.bind(this));
this.xaxis.nax = newmax;
}
},
/**
* function: setTicks
*
* parameters:
* {Object} axis
* {Object} axisOptions
*/
setTicks: function(axis, axisOptions) {
axis.ticks = [];
if (axisOptions.ticks == null)
axis.ticks = axis.tickGenerator(axis);
else if (typeof axisOptions.ticks == "number") {
if (axisOptions.ticks > 0)
axis.ticks = axis.tickGenerator(axis);
}
else if (axisOptions.ticks) {
var ticks = axisOptions.ticks;
if (Object.isFunction(ticks))
// generate the ticks
ticks = ticks({ min: axis.min, max: axis.max });
// clean up the user-supplied ticks, copy them over
//var i, v;
ticks.each(function(t, i){
var v = null;
var label = null;
if(typeof t == 'object') {
v = t[0];
if(t.length > 1) { label = t[1]; }
}
else {
v = t;
}
if(!label) {
label = axis.tickFormatter(v, axis);
}
axis.ticks[i] = {v: v, label: label}
}.bind(this));
}
if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) {
if (axisOptions.min == null)
axis.min = Math.min(axis.min, axis.ticks[0].v);
if (axisOptions.max == null && axis.ticks.length > 1)
axis.max = Math.min(axis.max, axis.ticks[axis.ticks.length - 1].v);
}
},
/**
* Function: setSpacing
*
* Parameters: none
*/
setSpacing: function() {
// calculate y label dimensions
var i, labels = [], l;
for (i = 0; i < this.yaxis.ticks.length; ++i) {
l = this.yaxis.ticks[i].label;
if (l)
labels.push('<div class="tickLabel">' + l + '</div>');
}
if (labels.length > 0) {
var dummyDiv = new Element('div', {'style': 'position:absolute;top:-10000px;font-size:smaller'});
dummyDiv.update(labels.join(""));
this.domObj.insert(dummyDiv);
this.yLabelMaxWidth = dummyDiv.getWidth();
this.yLabelMaxHeight = dummyDiv.select('div')[0].getHeight();
dummyDiv.remove();
}
var maxOutset = this.options.grid.borderWidth;
if (this.options.points.show)
maxOutset = Math.max(maxOutset, this.options.points.radius + this.options.points.lineWidth/2);
for (i = 0; i < this.graphData.length; ++i) {
if (this.graphData[i].points.show)
maxOutset = Math.max(maxOutset, this.graphData[i].points.radius + this.graphData[i].points.lineWidth/2);
}
this.chartOffset.left = this.chartOffset.right = this.chartOffset.top = this.chartOffset.bottom = maxOutset;
this.chartOffset.left += this.yLabelMaxWidth + this.options.grid.labelMargin;
this.chartWidth = this.canvasWidth - this.chartOffset.left - this.chartOffset.right;
this.xLabelBoxWidth = this.chartWidth / 6;
labels = [];
for (i = 0; i < this.xaxis.ticks.length; ++i) {
l = this.xaxis.ticks[i].label;
if (l) {
labels.push('<span class="tickLabel" width="' + this.xLabelBoxWidth + '">' + l + '</span>');
}
}
var xLabelMaxHeight = 0;
if (labels.length > 0) {
var dummyDiv = new Element('div', {'style': 'position:absolute;top:-10000px;font-size:smaller'});
dummyDiv.update(labels.join(""));
this.domObj.appendChild(dummyDiv);
xLabelMaxHeight = dummyDiv.getHeight();
dummyDiv.remove();
}
this.chartOffset.bottom += xLabelMaxHeight + this.options.grid.labelMargin;
this.chartHeight = this.canvasHeight - this.chartOffset.bottom - this.chartOffset.top;
this.hozScale = this.chartWidth / (this.xaxis.max - this.xaxis.min);
this.vertScale = this.chartHeight / (this.yaxis.max - this.yaxis.min);
},
/**
* function: draw
*/
draw: function() {
if(this.options.bars.show)
{
this.extendXRangeIfNeededByBar();
this.setSpacing();
this.drawGrid();
this.drawBarGraph(this.graphData, this.barDataRange);
}
else if(this.options.pies.show)
{
this.preparePieData(this.graphData);
this.drawPieGraph(this.graphData);
}
else
{
this.drawGrid();
for (var i = 0; i < this.graphData.length; i++) {
this.drawGraph(this.graphData[i]);
}
}
},
/**
* function: translateHoz
*
* Paramters:
* {Object} x
*
* Description: Given a value this function translate it to relative x coord on canvas
*/
translateHoz: function(x) {
return (x - this.xaxis.min) * this.hozScale;
},
/**
* function: translateVert
*
* parameters:
* {Object} y
*
* Description: Given a value this function translate it to relative y coord on canvas
*/
translateVert: function(y) {
return this.chartHeight - (y - this.yaxis.min) * this.vertScale;
},
/**
* function: drawGrid
*
* parameters: none
*
* description: draws the actual grid on the canvas
*/
drawGrid: function() {
var i;
this.context.save();
this.context.clearRect(0, 0, this.canvasWidth, this.canvasHeight);
this.context.translate(this.chartOffset.left, this.chartOffset.top);
// draw background, if any
if (this.options.grid.backgroundColor != null) {
this.context.fillStyle = this.options.grid.backgroundColor;
this.context.fillRect(0, 0, this.chartWidth, this.chartHeight);
}
// draw colored areas
if (this.options.grid.coloredAreas) {
var areas = this.options.grid.coloredAreas;
if (Object.isFunction(areas)) {
areas = areas({ xmin: this.xaxis.min, xmax: this.xaxis.max, ymin: this.yaxis.min, ymax: this.yaxis.max });
}
areas.each(function(a){
// clip
if (a.x1 == null || a.x1 < this.xaxis.min)
a.x1 = this.xaxis.min;
if (a.x2 == null || a.x2 > this.xaxis.max)
a.x2 = this.xaxis.max;
if (a.y1 == null || a.y1 < this.yaxis.min)
a.y1 = this.yaxis.min;
if (a.y2 == null || a.y2 > this.yaxis.max)
a.y2 = this.yaxis.max;
var tmp;
if (a.x1 > a.x2) {
tmp = a.x1;
a.x1 = a.x2;
a.x2 = tmp;
}
if (a.y1 > a.y2) {
tmp = a.y1;
a.y1 = a.y2;
a.y2 = tmp;
}
if (a.x1 >= this.xaxis.max || a.x2 <= this.xaxis.min || a.x1 == a.x2
|| a.y1 >= this.yaxis.max || a.y2 <= this.yaxis.min || a.y1 == a.y2)
return;
this.context.fillStyle = a.color || this.options.grid.coloredAreasColor;
this.context.fillRect(Math.floor(this.translateHoz(a.x1)), Math.floor(this.translateVert(a.y2)),
Math.floor(this.translateHoz(a.x2) - this.translateHoz(a.x1)), Math.floor(this.translateVert(a.y1) - this.translateVert(a.y2)));
}.bind(this));
}
// draw the inner grid
this.context.lineWidth = 1;
this.context.strokeStyle = this.options.grid.tickColor;
this.context.beginPath();
var v;
if (this.options.grid.drawXAxis) {
this.xaxis.ticks.each(function(aTick){
v = aTick.v;
if(v <= this.xaxis.min || v >= this.xaxis.max) {
return;
}
this.context.moveTo(Math.floor(this.translateHoz(v)) + this.context.lineWidth / 2, 0);
this.context.lineTo(Math.floor(this.translateHoz(v)) + this.context.lineWidth / 2, this.chartHeight);
}.bind(this));
}
if (this.options.grid.drawYAxis) {
this.yaxis.ticks.each(function(aTick){
v = aTick.v;
if(v <= this.yaxis.min || v >= this.yaxis.max) {
return;
}
this.context.moveTo(0, Math.floor(this.translateVert(v)) + this.context.lineWidth / 2);
this.context.lineTo(this.chartWidth, Math.floor(this.translateVert(v)) + this.context.lineWidth / 2);
}.bind(this));
}
this.context.stroke();
if (this.options.grid.borderWidth) {
// draw border
this.context.lineWidth = this.options.grid.borderWidth;
this.context.strokeStyle = this.options.grid.color;
this.context.lineJoin = "round";
this.context.strokeRect(0, 0, this.chartWidth, this.chartHeight);
this.context.restore();
}
},
/**
* function: insertLabels
*
* parameters: none
*
* description: inserts the label with proper spacing. Both on X and Y axis
*/
insertLabels: function() {
this.domObj.select(".tickLabels").invoke('remove');
var i, tick;
var html = '<div class="tickLabels" style="font-size:smaller;color:' + this.options.grid.color + '">';
// do the x-axis
this.xaxis.ticks.each(function(tick){
if (!tick.label || tick.v < this.xaxis.min || tick.v > this.xaxis.max)
return;
html += '<div style="position:absolute;top:' + (this.chartOffset.top + this.chartHeight + this.options.grid.labelMargin) + 'px;left:' + (this.chartOffset.left + this.translateHoz(tick.v) - this.xLabelBoxWidth/2) + 'px;width:' + this.xLabelBoxWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
}.bind(this));
// do the y-axis
this.yaxis.ticks.each(function(tick){
if (!tick.label || tick.v < this.yaxis.min || tick.v > this.yaxis.max)
return;
html += '<div id="ylabels" style="position:absolute;top:' + (this.chartOffset.top + this.translateVert(tick.v) - this.yLabelMaxHeight/2) + 'px;left:0;width:' + this.yLabelMaxWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>";
}.bind(this));
html += '</div>';
this.domObj.insert(html);
},
/**
* function: drawGraph
*
* Paramters:
* {Object} graphData
*
* Description: given a graphData (series) this function calls a proper lower level method to draw it.
*/
drawGraph: function(graphData) {
if (graphData.lines.show || (!graphData.bars.show && !graphData.points.show))
this.drawGraphLines(graphData);
if (graphData.bars.show)
this.drawGraphBar(graphData);
if (graphData.points.show)
this.drawGraphPoints(graphData);
},
/**
* function: plotLine
*
* parameters:
* {Object} data
* {Object} offset
*
* description:
* Helper function that plots a line based on the data provided
*/
plotLine: function(data, offset) {
var prev, cur = null, drawx = null, drawy = null;
this.context.beginPath();
for (var i = 0; i < data.length; ++i) {
prev = cur;
cur = data[i];
if (prev == null || cur == null)
continue;
var x1 = prev[0], y1 = prev[1],
x2 = cur[0], y2 = cur[1];
// clip with ymin
if (y1 <= y2 && y1 < this.yaxis.min) {
if (y2 < this.yaxis.min)
continue; // line segment is outside
// compute new intersection point
x1 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = this.yaxis.min;
}
else if (y2 <= y1 && y2 < this.yaxis.min) {
if (y1 < this.yaxis.min)
continue;
x2 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = this.yaxis.min;
}
// clip with ymax
if (y1 >= y2 && y1 > this.yaxis.max) {
if (y2 > this.yaxis.max)
continue;
x1 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = this.yaxis.max;
}
else if (y2 >= y1 && y2 > this.yaxis.max) {
if (y1 > this.yaxis.max)
continue;
x2 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = this.yaxis.max;
}
// clip with xmin
if (x1 <= x2 && x1 < this.xaxis.min) {
if (x2 < this.xaxis.min)
continue;
y1 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = this.xaxis.min;
}
else if (x2 <= x1 && x2 < this.xaxis.min) {
if (x1 < this.xaxis.min)
continue;
y2 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = this.xaxis.min;
}
// clip with xmax
if (x1 >= x2 && x1 > this.xaxis.max) {
if (x2 > this.xaxis.max)
continue;
y1 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = this.xaxis.max;
}
else if (x2 >= x1 && x2 > this.xaxis.max) {
if (x1 > this.xaxis.max)
continue;
y2 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = this.xaxis.max;
}
if (drawx != this.translateHoz(x1) || drawy != this.translateVert(y1) + offset)
this.context.moveTo(this.translateHoz(x1), this.translateVert(y1) + offset);
drawx = this.translateHoz(x2);
drawy = this.translateVert(y2) + offset;
this.context.lineTo(drawx, drawy);
}
this.context.stroke();
},
/**
* function: plotLineArea
*
* parameters:
* {Object} data
*
* description:
* Helper functoin that plots a colored line graph. This function
* takes the data nad then fill in the area on the graph properly
*/
plotLineArea: function(data) {
var prev, cur = null;
var bottom = Math.min(Math.max(0, this.yaxis.min), this.yaxis.max);
var top, lastX = 0;
var areaOpen = false;
for (var i = 0; i < data.length; ++i) {
prev = cur;
cur = data[i];
if (areaOpen && prev != null && cur == null) {
// close area
this.context.lineTo(this.translateHoz(lastX), this.translateVert(bottom));
this.context.fill();
areaOpen = false;
continue;
}
if (prev == null || cur == null)
continue;
var x1 = prev[0], y1 = prev[1],
x2 = cur[0], y2 = cur[1];
// clip x values
// clip with xmin
if (x1 <= x2 && x1 < this.xaxis.min) {
if (x2 < this.xaxis.min)
continue;
y1 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = this.xaxis.min;
}
else if (x2 <= x1 && x2 < this.xaxis.min) {
if (x1 < this.xaxis.min)
continue;
y2 = (this.xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = this.xaxis.min;
}
// clip with xmax
if (x1 >= x2 && x1 > this.xaxis.max) {
if (x2 > this.xaxis.max)
continue;
y1 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x1 = this.xaxis.max;
}
else if (x2 >= x1 && x2 > this.xaxis.max) {
if (x1 > this.xaxis.max)
continue;
y2 = (this.xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
x2 = this.xaxis.max;
}
if (!areaOpen) {
// open area
this.context.beginPath();
this.context.moveTo(this.translateHoz(x1), this.translateVert(bottom));
areaOpen = true;
}
// now first check the case where both is outside
if (y1 >= this.yaxis.max && y2 >= this.yaxis.max) {
this.context.lineTo(this.translateHoz(x1), this.translateVert(this.yaxis.max));
this.context.lineTo(this.translateHoz(x2), this.translateVert(this.yaxis.max));
continue;
}
else if (y1 <= this.yaxis.min && y2 <= this.yaxis.min) {
this.context.lineTo(this.translateHoz(x1), this.translateVert(this.yaxis.min));
this.context.lineTo(this.translateHoz(x2), this.translateVert(this.yaxis.min));
continue;
}
var x1old = x1, x2old = x2;
// clip with ymin
if (y1 <= y2 && y1 < this.yaxis.min && y2 >= this.yaxis.min) {
x1 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = this.yaxis.min;
}
else if (y2 <= y1 && y2 < this.yaxis.min && y1 >= this.yaxis.min) {
x2 = (this.yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = this.yaxis.min;
}
// clip with ymax
if (y1 >= y2 && y1 > this.yaxis.max && y2 <= this.yaxis.max) {
x1 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y1 = this.yaxis.max;
}
else if (y2 >= y1 && y2 > this.yaxis.max && y1 <= this.yaxis.max) {
x2 = (this.yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
y2 = this.yaxis.max;
}
// if the x value was changed we got a rectangle
// to fill
if (x1 != x1old) {
if (y1 <= this.yaxis.min)
top = this.yaxis.min;
else
top = this.yaxis.max;
this.context.lineTo(this.translateHoz(x1old), this.translateVert(top));
this.context.lineTo(this.translateHoz(x1), this.translateVert(top));
}
// fill the triangles
this.context.lineTo(this.translateHoz(x1), this.translateVert(y1));
this.context.lineTo(this.translateHoz(x2), this.translateVert(y2));
// fill the other rectangle if it's there
if (x2 != x2old) {
if (y2 <= this.yaxis.min)
top = this.yaxis.min;
else
top = this.yaxis.max;
this.context.lineTo(this.translateHoz(x2old), this.translateVert(top));
this.context.lineTo(this.translateHoz(x2), this.translateVert(top));
}
lastX = Math.max(x2, x2old);
}
if (areaOpen) {
this.context.lineTo(this.translateHoz(lastX), this.translateVert(bottom));
this.context.fill();
}
},
/**
* function: drawGraphLines
*
* parameters:
* {Object} graphData
*
* description:
* Main function that daws the line graph. This function is called
* if <options> lines property is set to show or no other type of
* graph is specified. This function depends on <plotLineArea> and
* <plotLine> functions.
*/
drawGraphLines: function(graphData) {
this.context.save();
this.context.translate(this.chartOffset.left, this.chartOffset.top);
this.context.lineJoin = "round";
var lw = graphData.lines.lineWidth;
var sw = graphData.shadowSize;
// FIXME: consider another form of shadow when filling is turned on
if (sw > 0) {
// draw shadow in two steps
this.context.lineWidth = sw / 2;
this.context.strokeStyle = "rgba(0,0,0,0.1)";
this.plotLine(graphData.data, lw/2 + sw/2 + this.context.lineWidth/2);
this.context.lineWidth = sw / 2;
this.context.strokeStyle = "rgba(0,0,0,0.2)";
this.plotLine(graphData.data, lw/2 + this.context.lineWidth/2);
}
this.context.lineWidth = lw;
this.context.strokeStyle = graphData.color;
if (graphData.lines.fill) {
this.context.fillStyle = graphData.lines.fillColor != null ? graphData.lines.fillColor : this.parseColor(graphData.color).scale(null, null, null, 0.4).toString();
this.plotLineArea(graphData.data, 0);
}
this.plotLine(graphData.data, 0);
this.context.restore();
},
/**
* function: plotPoints
*
* parameters:
* {Object} data
* {Object} radius
* {Object} fill
*
* description:
* Helper function that draws the point graph according to the data provided. Size of each
* point is provided by radius variable and fill specifies if points
* are filled
*/
plotPoints: function(data, radius, fill) {
for (var i = 0; i < data.length; ++i) {
if (data[i] == null)
continue;
var x = data[i][0], y = data[i][1];
if (x < this.xaxis.min || x > this.xaxis.max || y < this.yaxis.min || y > this.yaxis.max)
continue;
this.context.beginPath();
this.context.arc(this.translateHoz(x), this.translateVert(y), radius, 0, 2 * Math.PI, true);
if (fill)
this.context.fill();
this.context.stroke();
}
},
/**
* function: plotPointShadows
*
* parameters:
* {Object} data
* {Object} offset
* {Object} radius
*
* description:
* Helper function that draws the shadows for the points.
*/
plotPointShadows: function(data, offset, radius) {
for (var i = 0; i < data.length; ++i) {
if (data[i] == null)
continue;
var x = data[i][0], y = data[i][1];
if (x < this.xaxis.min || x > this.xaxis.max || y < this.yaxis.min || y > this.yaxis.max)
continue;
this.context.beginPath();
this.context.arc(this.translateHoz(x), this.translateVert(y) + offset, radius, 0, Math.PI, false);
this.context.stroke();
}
},
/**
* function: drawGraphPoints
*
* paramters:
* {Object} graphData
*
* description:
* Draws the point graph onto the canvas. This function depends on helper
* functions <plotPointShadows> and <plotPoints>
*/
drawGraphPoints: function(graphData) {
this.context.save();
this.context.translate(this.chartOffset.left, this.chartOffset.top);
var lw = graphData.lines.lineWidth;
var sw = graphData.shadowSize;
if (sw > 0) {
// draw shadow in two steps
this.context.lineWidth = sw / 2;
this.context.strokeStyle = "rgba(0,0,0,0.1)";
this.plotPointShadows(graphData.data, sw/2 + this.context.lineWidth/2, graphData.points.radius);
this.context.lineWidth = sw / 2;
this.context.strokeStyle = "rgba(0,0,0,0.2)";
this.plotPointShadows(graphData.data, this.context.lineWidth/2, graphData.points.radius);
}
this.context.lineWidth = graphData.points.lineWidth;
this.context.strokeStyle = graphData.color;
this.context.fillStyle = graphData.points.fillColor != null ? graphData.points.fillColor : graphData.color;
this.plotPoints(graphData.data, graphData.points.radius, graphData.points.fill);
this.context.restore();
},
/**
* function: preparePieData
*
* parameters:
* {Object} graphData
*
* Description:
* Helper function that manipulates the given data stream so that it can
* be plotted as a Pie Chart
*/
preparePieData: function(graphData)
{
for(i = 0; i < graphData.length; i++)
{
var data = 0;
for(j = 0; j < graphData[i].data.length; j++){
data += parseInt(graphData[i].data[j][1]);
}
graphData[i].data = data;
}
},
/**
* function: drawPieShadow
*
* {Object} anchorX
* {Object} anchorY
* {Object} radius
*
* description:
* Helper function that draws a shadow for the Pie Chart. This just draws
* a circle with offset that simulates shadow. We do not give each piece
* of the pie an individual shadow.
*/
drawPieShadow: function(anchorX, anchorY, radius)
{
this.context.beginPath();
this.context.moveTo(anchorX, anchorY);
this.context.fillStyle = 'rgba(0,0,0,' + 0.1 + ')';
startAngle = 0;
endAngle = (Math.PI/180)*360;
this.context.arc(anchorX + 2, anchorY +2, radius + (this.options.shadowSize/2), startAngle, endAngle, false);
this.context.fill();
this.context.closePath();
},
/**
* function: drawPieGraph
*
* parameters:
* {Object} graphData
*
* description:
* Draws the actual pie chart. This function depends on helper function
* <drawPieShadow> to draw the actual shadow
*/
drawPieGraph: function(graphData)
{
var sumData = 0;
var radius = 0;
var centerX = this.chartWidth/2;
var centerY = this.chartHeight/2;
var startAngle = 0;
var endAngle = 0;
var fontSize = this.options.pies.fontSize;
var labelWidth = this.options.pies.labelWidth;
//determine Pie Radius
if(!this.options.pies.autoScale)
radius = this.options.pies.radius;
else
radius = (this.chartHeight * 0.85)/2;
var labelRadius = radius * 1.05;
for(i = 0; i < graphData.length; i++)
sumData += graphData[i].data;
// used to adjust labels so that everything adds up to 100%
totalPct = 0;
//lets draw the shadow first.. we don't need an individual shadow to every pie rather we just
//draw a circle underneath to simulate the shadow...
this.drawPieShadow(centerX, centerY, radius, 0, 0);
//lets draw the actual pie chart now.
graphData.each(function(gd, j){
var pct = gd.data / sumData;
startAngle = endAngle;
endAngle += pct * (2 * Math.PI);
var sliceMiddle = (endAngle - startAngle) / 2 + startAngle;
var labelX = centerX + Math.cos(sliceMiddle) * labelRadius;
var labelY = centerY + Math.sin(sliceMiddle) * labelRadius;
var anchorX = centerX;
var anchorY = centerY;
var textAlign = null;
var verticalAlign = null;
var left = 0;
var top = 0;
//draw pie:
//drawing pie
this.context.beginPath();
this.context.moveTo(anchorX, anchorY);
this.context.arc(anchorX, anchorY, radius, startAngle, endAngle, false);
this.context.closePath();
this.context.fillStyle = this.parseColor(gd.color).scale(null, null, null, this.options.pies.fillOpacity).toString();
if(this.options.pies.fill) { this.context.fill(); }
// drawing labels
if (sliceMiddle <= 0.25 * (2 * Math.PI))
{
// text on top and align left
textAlign = "left";
verticalAlign = "top";
left = labelX;
top = labelY + fontSize;
}
else if (sliceMiddle > 0.25 * (2 * Math.PI) && sliceMiddle <= 0.5 * (2 * Math.PI))
{
// text on bottom and align left
textAlign = "left";
verticalAlign = "bottom";
left = labelX - labelWidth;
top = labelY;
}
else if (sliceMiddle > 0.5 * (2 * Math.PI) && sliceMiddle <= 0.75 * (2 * Math.PI))
{
// text on bottom and align right
textAlign = "right";
verticalAlign = "bottom";
left = labelX - labelWidth;
top = labelY - fontSize;
}
else
{
// text on top and align right
textAlign = "right";
verticalAlign = "bottom";
left = labelX;
top = labelY - fontSize;
}
left = left + "px";
top = top + "px";
var textVal = Math.round(pct * 100);
if (j == graphData.length - 1) {
if (textVal + totalPct < 100) {
textVal = textVal + 1;
} else if (textVal + totalPct > 100) {
textVal = textVal - 1;
};
}
var html = "<div style=\"position: absolute;zindex:11; width:" + labelWidth + "px;fontSize:" + fontSize + "px;overflow:hidden;top:"+ top + ";left:"+ left + ";textAlign:" + textAlign + ";verticalAlign:" + verticalAlign +"\">" + textVal + "%</div>";
//$(html).appendTo(target);
this.domObj.insert(html);
totalPct = totalPct + textVal;
}.bind(this));
},
/**
* function: drawBarGraph
*
* parameters:
* {Object} graphData
* {Object} barDataRange
*
* description:
* Goes through each series in graphdata and passes it onto <drawBarGraphs> function
*/
drawBarGraph: function(graphData, barDataRange)
{
graphData.each(function(gd, i){
this.drawGraphBars(gd, i, graphData.size(), barDataRange);
}.bind(this));
},
/**
* function: drawGraphBar
*
* parameters:
* {Object} graphData
*
* description:
* This function is called when an individual series in GraphData is bar graph and plots it
*/
drawGraphBar: function(graphData)
{
this.drawGraphBars(graphData, 0, this.graphData.length, this.barDataRange);
},
/**
* function: plotBars
*
* parameters:
* {Object} graphData
* {Object} data
* {Object} barWidth
* {Object} offset
* {Object} fill
* {Object} counter
* {Object} total
* {Object} barDataRange
*
* description:
* Helper function that draws the bar graph based on data.
*/
plotBars: function(graphData, data, barWidth, offset, fill,counter, total, barDataRange) {
var shift = 0;
if(total % 2 == 0)
{
shift = (1 + ((counter - total /2 ) - 1)) * barWidth;
}
else
{
var interval = 0.5;
if(counter == (total/2 - interval )) {
shift = - barWidth * interval;
}
else {
shift = (interval + (counter - Math.round(total/2))) * barWidth;
}
}
var rangeData = [];
data.each(function(d){
if(!d) return;
var x = d[0], y = d[1];
var drawLeft = true, drawTop = true, drawRight = true;
var left = x + shift, right = x + barWidth + shift, bottom = 0, top = y;
var rangeDataPoint = {};
rangeDataPoint.left = left;
rangeDataPoint.right = right;
rangeDataPoint.value = top;
rangeData.push(rangeDataPoint);
if (right < this.xaxis.min || left > this.xaxis.max || top < this.yaxis.min || bottom > this.yaxis.max)
return;
// clip
if (left < this.xaxis.min) {
left = this.xaxis.min;
drawLeft = false;
}
if (right > this.xaxis.max) {
right = this.xaxis.max;
drawRight = false;
}
if (bottom < this.yaxis.min)
bottom = this.yaxis.min;
if (top > this.yaxis.max) {
top = this.yaxis.max;
drawTop = false;
}
if(graphData.bars.showShadow && graphData.shadowSize > 0)
this.plotShadowOutline(graphData, this.context.strokeStyle, left, bottom, top, right, drawLeft, drawRight, drawTop);
// fill the bar
if (fill) {
this.context.beginPath();
this.context.moveTo(this.translateHoz(left), this.translateVert(bottom) + offset);
this.context.lineTo(this.translateHoz(left), this.translateVert(top) + offset);
this.context.lineTo(this.translateHoz(right), this.translateVert(top) + offset);
this.context.lineTo(this.translateHoz(right), this.translateVert(bottom) + offset);
this.context.fill();
}
// draw outline
if (drawLeft || drawRight || drawTop) {
this.context.beginPath();
this.context.moveTo(this.translateHoz(left), this.translateVert(bottom) + offset);
if (drawLeft)
this.context.lineTo(this.translateHoz(left), this.translateVert(top) + offset);
else
this.context.moveTo(this.translateHoz(left), this.translateVert(top) + offset);
if (drawTop)
this.context.lineTo(this.translateHoz(right), this.translateVert(top) + offset);
else
this.context.moveTo(this.translateHoz(right), this.translateVert(top) + offset);
if (drawRight)
this.context.lineTo(this.translateHoz(right), this.translateVert(bottom) + offset);
else
this.context.moveTo(this.translateHoz(right), this.translateVert(bottom) + offset);
this.context.stroke();
}
}.bind(this));
barDataRange.push(rangeData);
},
/**
* function: plotShadowOutline
*
* parameters:
* {Object} graphData
* {Object} orgStrokeStyle
* {Object} left
* {Object} bottom
* {Object} top
* {Object} right
* {Object} drawLeft
* {Object} drawRight
* {Object} drawTop
*
* description:
* Helper function that draws a outline simulating shadow for bar chart
*/
plotShadowOutline: function(graphData, orgStrokeStyle, left, bottom, top, right, drawLeft, drawRight, drawTop)
{
var orgOpac = 0.3;
for(var n = 1; n <= this.options.shadowSize/2; n++)
{
var opac = orgOpac * n;
this.context.beginPath();
this.context.strokeStyle = "rgba(0,0,0," + opac + ")";
this.context.moveTo(this.translateHoz(left) + n, this.translateVert(bottom));
if(drawLeft)
this.context.lineTo(this.translateHoz(left) + n, this.translateVert(top) - n);
else
this.context.moveTo(this.translateHoz(left) + n, this.translateVert(top) - n);
if(drawTop)
this.context.lineTo(this.translateHoz(right) + n, this.translateVert(top) - n);
else
this.context.moveTo(this.translateHoz(right) + n, this.translateVert(top) - n);
if(drawRight)
this.context.lineTo(this.translateHoz(right) + n, this.translateVert(bottom));
else
this.context.lineTo(this.translateHoz(right) + n, this.translateVert(bottom));
this.context.stroke();
this.context.closePath();
}
this.context.strokeStyle = orgStrokeStyle;
},
/**
* function: drawGraphBars
*
* parameters:
* {Object} graphData
* {Object} counter
* {Object} total
* {Object} barDataRange
*
* description:
* Draws the actual bar graphs. Calls <plotBars> to draw the individual bar
*/
drawGraphBars: function(graphData, counter, total, barDataRange){
this.context.save();
this.context.translate(this.chartOffset.left, this.chartOffset.top);
this.context.lineJoin = "round";
var bw = graphData.bars.barWidth;
var lw = Math.min(graphData.bars.lineWidth, bw);
this.context.lineWidth = lw;
this.context.strokeStyle = graphData.color;
if (graphData.bars.fill) {
this.context.fillStyle = graphData.bars.fillColor != null ? graphData.bars.fillColor : this.parseColor(graphData.color).scale(null, null, null, this.options.bars.fillOpacity).toString();
}
this.plotBars(graphData, graphData.data, bw, 0, graphData.bars.fill, counter, total, barDataRange);
this.context.restore();
},
/**
* function: insertLegend
*
* description:
* inserts legend onto the graph. *legend: {show: true}* must be set in <options>
* for for this to work.
*/
insertLegend: function() {
this.domObj.select(".legend").invoke('remove');
if (!this.options.legend.show)
return;
var fragments = [];
var rowStarted = false;
this.graphData.each(function(gd, index){
if(!gd.label) {
return;
}
if(index % this.options.legend.noColumns == 0) {
if(rowStarted) {
fragments.push('</tr>');
}
fragments.push('<tr>');
rowStarted = true;
}
var label = gd.label;
if(this.options.legend.labelFormatter != null) {
label = this.options.legend.labelFormatter(label);
}
fragments.push(
'<td class="legendColorBox"><div style="border:1px solid ' + this.options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:14px;height:10px;background-color:' + gd.color + ';overflow:hidden"></div></div></td>' +
'<td class="legendLabel">' + label + '</td>');
}.bind(this));
if (rowStarted)
fragments.push('</tr>');
if(fragments.length > 0){
var table = '<table style="font-size:smaller;color:' + this.options.grid.color + '">' + fragments.join("") + '</table>';
if($(this.options.legend.container) != null){
$(this.options.legend.container).insert(table);
}else{
var pos = '';
var p = this.options.legend.position, m = this.options.legend.margin;
if(p.charAt(0) == 'n') pos += 'top:' + (m + this.chartOffset.top) + 'px;';
else if(p.charAt(0) == 's') pos += 'bottom:' + (m + this.chartOffset.bottom) + 'px;';
if(p.charAt(1) == 'e') pos += 'right:' + (m + this.chartOffset.right) + 'px;';
else if(p.charAt(1) == 'w') pos += 'left:' + (m + this.chartOffset.bottom) + 'px;';
var div = this.domObj.insert('<div class="ProtoChart-legend" style="border: 1px solid '+this.options.legend.borderColor+'; position:absolute;z-index:2;' + pos +'">' + table + '</div>').getElementsBySelector('div.ProtoChart-legend').first();
if(this.options.legend.backgroundOpacity != 0.0){
var c = this.options.legend.backgroundColor;
if(c == null){
var tmp = (this.options.grid.backgroundColor != null) ? this.options.grid.backgroundColor : this.extractColor(div);
c = this.parseColor(tmp).adjust(null, null, null, 1).toString();
}
this.domObj.insert('<div class="ProtoChart-legend-bg" style="position:absolute;width:' + div.getWidth() + 'px;height:' + div.getHeight() + 'px;' + pos +'background-color:' + c + ';"> </div>').select('div.ProtoChart-legend-bg').first().setStyle({
'opacity': this.options.legend.backgroundOpacity
});
}
}
}
},
/**
* Function: onMouseMove
*
* parameters:
* event: {Object} ev
*
* Description:
* Called whenever the mouse is moved on the graph. This takes care of the mousetracking.
* This event also fires <ProtoChart:mousemove> event, which gets current position of the
* mouse as a parameters.
*/
onMouseMove: function(ev) {
var e = ev || window.event;
if (e.pageX == null && e.clientX != null) {
var de = document.documentElement, b = $(document.body);
this.lastMousePos.pageX = e.clientX + (de && de.scrollLeft || b.scrollLeft || 0);
this.lastMousePos.pageY = e.clientY + (de && de.scrollTop || b.scrollTop || 0);
}
else {
this.lastMousePos.pageX = e.pageX;
this.lastMousePos.pageY = e.pageY;
}
var offset = this.overlay.cumulativeOffset();
var pos = {
x: this.xaxis.min + (e.pageX - offset.left - this.chartOffset.left) / this.hozScale,
y: this.yaxis.max - (e.pageY - offset.top - this.chartOffset.top) / this.vertScale
};
if(this.options.mouse.track && this.selectionInterval == null) {
this.hit(ev, pos);
}
this.domObj.fire("ProtoChart:mousemove", [ pos ]);
},
/**
* Function: onMouseDown
*
* Parameters:
* Event - {Object} e
*
* Description:
* Called whenever the mouse is clicked.
*/
onMouseDown: function(e) {
if (e.which != 1) // only accept left-click
return;
document.body.focus();
if (document.onselectstart !== undefined && this.workarounds.onselectstart == null) {
this.workarounds.onselectstart = document.onselectstart;
document.onselectstart = function () { return false; };
}
if (document.ondrag !== undefined && this.workarounds.ondrag == null) {
this.workarounds.ondrag = document.ondrag;
document.ondrag = function () { return false; };
}
this.setSelectionPos(this.selection.first, e);
if (this.selectionInterval != null)
clearInterval(this.selectionInterval);
this.lastMousePos.pageX = null;
this.selectionInterval = setInterval(this.updateSelectionOnMouseMove.bind(this), 200);
this.overlay.observe("mouseup", this.onSelectionMouseUp.bind(this));
},
/**
* Function: onClick
* parameters:
* Event - {Object} e
* Description:
* Handles the "click" event on the chart. This function fires <ProtoChart:plotclick> event. If
* <options.allowDataClick> is enabled then it also fires <ProtoChart:dataclick> event which gives
* you access to exact data point where user clicked.
*/
onClick: function(e) {
if (this.ignoreClick) {
this.ignoreClick = false;
return;
}
var offset = this.overlay.cumulativeOffset();
var pos ={
x: this.xaxis.min + (e.pageX - offset.left - this.chartOffset.left) / this.hozScale,
y: this.yaxis.max - (e.pageY - offset.top - this.chartOffset.top) / this.vertScale
};
this.domObj.fire("ProtoChart:plotclick", [ pos ]);
if(this.options.allowDataClick)
{
var dataPoint = {};
if(this.options.points.show)
{
dataPoint = this.getDataClickPoint(pos, this.options);
this.domObj.fire("ProtoChart:dataclick", [dataPoint]);
}
else if(this.options.lines.show && this.options.points.show)
{
dataPoint = this.getDataClickPoint(pos, this.options);
this.domObj.fire("ProtoChart:dataclick", [dataPoint]);
}
else if(this.options.bars.show)
{
if(this.barDataRange.length > 0)
{
dataPoint = this.getDataClickPoint(pos, this.options, this.barDataRange);
this.domObj.fire("ProtoChart:dataclick", [dataPoint]);
}
}
}
},
/**
* Internal function used by onClick method.
*/
getDataClickPoint: function(pos, options, barDataRange)
{
pos.x = parseInt(pos.x);
pos.y = parseInt(pos.y);
var yClick = pos.y.toFixed(0);
var dataVal = {};
dataVal.position = pos;
dataVal.value = '';
if(options.points.show)
{
this.graphData.each(function(gd){
var temp = gd.data;
var xClick = parseInt(pos.x.toFixed(0));
if(xClick < 0) { xClick = 0; }
if(temp[xClick] && yClick >= temp[xClick][1] - (this.options.points.radius * 10) && yClick <= temp[xClick][1] + (this.options.points.radius * 10)) {
dataVal.value = temp[xClick][1];
throw $break;
}
}.bind(this));
}
else if(options.bars.show)
{
xClick = pos.x;
this.barDataRange.each(function(barData){
barData.each(function(data){
var temp = data;
if(xClick > temp.left && xClick < temp.right) {
dataVal.value = temp.value;
throw $break;
}
}.bind(this));
}.bind(this));
}
return dataVal;
},
/**
* Function: triggerSelectedEvent
*
* Description:
* Internal function called when a selection on the graph is made. This function
* fires <ProtoChart:selected> event which has a parameter representing the selection
* {
* x1: {int}, y1: {int},
* x2: {int}, y2: {int}
* }
*/
triggerSelectedEvent: function() {
var x1, x2, y1, y2;
if (this.selection.first.x <= this.selection.second.x) {
x1 = this.selection.first.x;
x2 = this.selection.second.x;
}
else {
x1 = this.selection.second.x;
x2 = this.selection.first.x;
}
if (this.selection.first.y >= this.selection.second.y) {
y1 = this.selection.first.y;
y2 = this.selection.second.y;
}
else {
y1 = this.selection.second.y;
y2 = this.selection.first.y;
}
x1 = this.xaxis.min + x1 / this.hozScale;
x2 = this.xaxis.min + x2 / this.hozScale;
y1 = this.yaxis.max - y1 / this.vertScale;
y2 = this.yaxis.max - y2 / this.vertScale;
this.domObj.fire("ProtoChart:selected", [ { x1: x1, y1: y1, x2: x2, y2: y2 } ]);
},
/**
* Internal function
*/
onSelectionMouseUp: function(e) {
if (document.onselectstart !== undefined)
document.onselectstart = this.workarounds.onselectstart;
if (document.ondrag !== undefined)
document.ondrag = this.workarounds.ondrag;
if (this.selectionInterval != null) {
clearInterval(this.selectionInterval);
this.selectionInterval = null;
}
this.setSelectionPos(this.selection.second, e);
this.clearSelection();
if (!this.selectionIsSane() || e.which != 1)
return false;
this.drawSelection();
this.triggerSelectedEvent();
this.ignoreClick = true;
return false;
},
setSelectionPos: function(pos, e) {
var offset = $(this.overlay).cumulativeOffset();
if (this.options.selection.mode == "y") {
if (pos == this.selection.first)
pos.x = 0;
else
pos.x = this.chartWidth;
}
else {
pos.x = e.pageX - offset.left - this.chartOffset.left;
pos.x = Math.min(Math.max(0, pos.x), this.chartWidth);
}
if (this.options.selection.mode == "x") {
if (pos == this.selection.first)
pos.y = 0;
else
pos.y = this.chartHeight;
}
else {
pos.y = e.pageY - offset.top - this.chartOffset.top;
pos.y = Math.min(Math.max(0, pos.y), this.chartHeight);
}
},
updateSelectionOnMouseMove: function() {
if (this.lastMousePos.pageX == null)
return;
this.setSelectionPos(this.selection.second, this.lastMousePos);
this.clearSelection();
if (this.selectionIsSane())
this.drawSelection();
},
clearSelection: function() {
if (this.prevSelection == null)
return;
var x = Math.min(this.prevSelection.first.x, this.prevSelection.second.x),
y = Math.min(this.prevSelection.first.y, this.prevSelection.second.y),
w = Math.abs(this.prevSelection.second.x - this.prevSelection.first.x),
h = Math.abs(this.prevSelection.second.y - this.prevSelection.first.y);
this.overlayContext.clearRect(x + this.chartOffset.left - this.overlayContext.lineWidth,
y + this.chartOffset.top - this.overlayContext.lineWidth,
w + this.overlayContext.lineWidth*2,
h + this.overlayContext.lineWidth*2);
this.prevSelection = null;
},
/**
* Function: setSelection
*
* Parameters:
* Area - {Object} area represented as a range like: {x1: 3, y1: 3, x2: 4, y2: 8}
*
* Description:
* Sets the current graph selection to the provided range. Calls <drawSelection> and
* <triggerSelectedEvent> functions internally.
*/
setSelection: function(area) {
this.clearSelection();
if (this.options.selection.mode == "x") {
this.selection.first.y = 0;
this.selection.second.y = this.chartHeight;
}
else {
this.selection.first.y = (this.yaxis.max - area.y1) * this.vertScale;
this.selection.second.y = (this.yaxis.max - area.y2) * this.vertScale;
}
if (this.options.selection.mode == "y") {
this.selection.first.x = 0;
this.selection.second.x = this.chartWidth;
}
else {
this.selection.first.x = (area.x1 - this.xaxis.min) * this.hozScale;
this.selection.second.x = (area.x2 - this.xaxis.min) * this.hozScale;
}
this.drawSelection();
this.triggerSelectedEvent();
},
/**
* Function: drawSelection
* Description: Internal function called to draw the selection made on the graph.
*/
drawSelection: function() {
if (this.prevSelection != null &&
this.selection.first.x == this.prevSelection.first.x &&
this.selection.first.y == this.prevSelection.first.y &&
this.selection.second.x == this.prevSelection.second.x &&
this.selection.second.y == this.prevSelection.second.y)
{
return;
}
this.overlayContext.strokeStyle = this.parseColor(this.options.selection.color).scale(null, null, null, 0.8).toString();
this.overlayContext.lineWidth = 1;
this.context.lineJoin = "round";
this.overlayContext.fillStyle = this.parseColor(this.options.selection.color).scale(null, null, null, 0.4).toString();
this.prevSelection = { first: { x: this.selection.first.x,
y: this.selection.first.y },
second: { x: this.selection.second.x,
y: this.selection.second.y } };
var x = Math.min(this.selection.first.x, this.selection.second.x),
y = Math.min(this.selection.first.y, this.selection.second.y),
w = Math.abs(this.selection.second.x - this.selection.first.x),
h = Math.abs(this.selection.second.y - this.selection.first.y);
this.overlayContext.fillRect(x + this.chartOffset.left, y + this.chartOffset.top, w, h);
this.overlayContext.strokeRect(x + this.chartOffset.left, y + this.chartOffset.top, w, h);
},
/**
* Internal function
*/
selectionIsSane: function() {
var minSize = 5;
return Math.abs(this.selection.second.x - this.selection.first.x) >= minSize &&
Math.abs(this.selection.second.y - this.selection.first.y) >= minSize;
},
/**
* Internal function that formats the track. This is the format the text is shown when mouse
* tracking is enabled.
*/
defaultTrackFormatter: function(val)
{
return '['+val.x+', '+val.y+']';
},
/**
* Function: clearHit
*/
clearHit: function(){
if(this.prevHit){
this.overlayContext.clearRect(
this.translateHoz(this.prevHit.x) + this.chartOffset.left - this.options.mouse.radius*2,
this.translateVert(this.prevHit.y) + this.chartOffset.top - this.options.mouse.radius*2,
this.options.mouse.radius*3 + this.options.points.lineWidth*3,
this.options.mouse.radius*3 + this.options.points.lineWidth*3
);
this.prevHit = null;
}
},
/**
* Function: hit
*
* Parameters:
* event - {Object} event object
* mouse - {Object} mouse object that is used to keep track of mouse movement
*
* Description:
* If hit occurs this function will fire a ProtoChart:hit event.
*/
hit: function(event, mouse){
/**
* Nearest data element.
*/
var n = {
dist:Number.MAX_VALUE,
x:null,
y:null,
mouse:null
};
for(var i = 0, data, xsens, ysens; i < this.graphData.length; i++){
if(!this.graphData[i].mouse.track) continue;
data = this.graphData[i].data;
xsens = (this.hozScale*this.graphData[i].mouse.sensibility);
ysens = (this.vertScale*this.graphData[i].mouse.sensibility);
for(var j = 0, xabs, yabs; j < data.length; j++){
xabs = this.hozScale*Math.abs(data[j][0] - mouse.x);
yabs = this.vertScale*Math.abs(data[j][1] - mouse.y);
if(xabs < xsens && yabs < ysens && (xabs+yabs) < n.dist){
n.dist = (xabs+yabs);
n.x = data[j][0];
n.y = data[j][1];
n.mouse = this.graphData[i].mouse;
}
}
}
if(n.mouse && n.mouse.track && !this.prevHit || (this.prevHit && n.x != this.prevHit.x && n.y != this.prevHit.y)){
var el = this.domObj.select('.'+this.options.mouse.clsName).first();
if(!el){
var pos = '', p = this.options.mouse.position, m = this.options.mouse.margin;
if(p.charAt(0) == 'n') pos += 'top:' + (m + this.chartOffset.top) + 'px;';
else if(p.charAt(0) == 's') pos += 'bottom:' + (m + this.chartOffset.bottom) + 'px;';
if(p.charAt(1) == 'e') pos += 'right:' + (m + this.chartOffset.right) + 'px;';
else if(p.charAt(1) == 'w') pos += 'left:' + (m + this.chartOffset.bottom) + 'px;';
this.domObj.insert('<div class="'+this.options.mouse.clsName+'" style="display:none;position:absolute;'+pos+'"></div>');
return;
}
if(n.x !== null && n.y !== null){
el.setStyle({display:'block'});
this.clearHit();
if(n.mouse.lineColor != null){
this.overlayContext.save();
this.overlayContext.translate(this.chartOffset.left, this.chartOffset.top);
this.overlayContext.lineWidth = this.options.points.lineWidth;
this.overlayContext.strokeStyle = n.mouse.lineColor;
this.overlayContext.fillStyle = '#ffffff';
this.overlayContext.beginPath();
this.overlayContext.arc(this.translateHoz(n.x), this.translateVert(n.y), this.options.mouse.radius, 0, 2 * Math.PI, true);
this.overlayContext.fill();
this.overlayContext.stroke();
this.overlayContext.restore();
}
this.prevHit = n;
var decimals = n.mouse.trackDecimals;
if(decimals == null || decimals < 0) decimals = 0;
if(!this.options.mouse.fixedPosition)
{
el.setStyle({
left: (this.translateHoz(n.x) + this.options.mouse.radius + 10) + "px",
top: (this.translateVert(n.y) + this.options.mouse.radius + 10) + "px"
});
}
el.innerHTML = n.mouse.trackFormatter({x: n.x.toFixed(decimals), y: n.y.toFixed(decimals)});
this.domObj.fire( 'ProtoChart:hit', [n] )
}else if(this.options.prevHit){
el.setStyle({display:'none'});
this.clearHit();
}
}
},
/**
* Internal function
*/
floorInBase: function(n, base) {
return base * Math.floor(n / base);
},
/**
* Function: extractColor
*
* Parameters:
* element - HTML element or ID of an HTML element
*
* Returns:
* color in string format
*/
extractColor: function(element)
{
var color;
do
{
color = $(element).getStyle('background-color').toLowerCase();
if(color != '' && color != 'transparent')
{
break;
}
element = element.up(0); //or else just get the parent ....
} while(element.nodeName.toLowerCase() != 'body');
//safari fix
if(color == 'rgba(0, 0, 0, 0)')
return 'transparent';
return color;
},
/**
* Function: parseColor
*
* Parameters:
* str - color string in different formats
*
* Returns:
* a Proto.Color Object - use toString() function to retreive the color in rgba/rgb format
*/
parseColor: function(str)
{
var result;
/**
* rgb(num,num,num)
*/
if((result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str)))
return new Proto.Color(parseInt(result[1]), parseInt(result[2]), parseInt(result[3]));
/**
* rgba(num,num,num,num)
*/
if((result = /rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str)))
return new Proto.Color(parseInt(result[1]), parseInt(result[2]), parseInt(result[3]), parseFloat(result[4]));
/**
* rgb(num%,num%,num%)
*/
if((result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str)))
return new Proto.Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55);
/**
* rgba(num%,num%,num%,num)
*/
if((result = /rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str)))
return new Proto.Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55, parseFloat(result[4]));
/**
* #a0b1c2
*/
if((result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str)))
return new Proto.Color(parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16));
/**
* #fff
*/
if((result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str)))
return new Proto.Color(parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16));
/**
* Otherwise, check if user wants transparent .. or we just return a standard color;
*/
var name = str.strip().toLowerCase();
if(name == 'transparent'){
return new Proto.Color(255, 255, 255, 0);
}
return new Proto.Color(100,100,100, 1);
}
});
if(!Proto) var Proto = {};
/**
* Class: Proto.Color
*
* Helper class that manipulates colors using RGBA values.
*
*/
Proto.Color = Class.create({
initialize: function(r, g, b, a) {
this.rgba = ['r', 'g', 'b', 'a'];
var x = 4;
while(-1<--x) {
this[this.rgba[x]] = arguments[x] || ((x==3) ? 1.0 : 0);
}
},
toString: function() {
if(this.a >= 1.0) {
return "rgb(" + [this.r, this.g, this.b].join(",") +")";
}
else {
return "rgba("+[this.r, this.g, this.b, this.a].join(",")+")";
}
},
scale: function(rf, gf, bf, af) {
x = 4;
while(-1<--x) {
if(arguments[x] != null) {
this[this.rgba[x]] *= arguments[x];
}
}
return this.normalize();
},
adjust: function(rd, gd, bd, ad) {
x = 4; //rgba.length
while (-1<--x) {
if (arguments[x] != null)
this[this.rgba[x]] += arguments[x];
}
return this.normalize();
},
clone: function() {
return new Proto.Color(this.r, this.b, this.g, this.a);
},
limit: function(val,minVal,maxVal) {
return Math.max(Math.min(val, maxVal), minVal);
},
normalize: function() {
this.r = this.limit(parseInt(this.r), 0, 255);
this.g = this.limit(parseInt(this.g), 0, 255);
this.b = this.limit(parseInt(this.b), 0, 255);
this.a = this.limit(this.a, 0, 1);
return this;
}
});
Reference in New Issue View Git Blame Copy Permalink