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/**
* o------------------------------------------------------------------------------o
* | This file is part of the RGraph package - you can learn more at: |
* | |
* | http://www.rgraph.net |
* | |
* | This package is licensed under the RGraph license. For all kinds of business |
* | purposes there is a small one-time licensing fee to pay and for non |
* | commercial purposes it is free to use. You can read the full license here: |
* | |
* | http://www.rgraph.net/LICENSE.txt |
* o------------------------------------------------------------------------------o
*/
/**
* Initialise the various objects
*/
if (typeof(RGraph) == 'undefined') RGraph = {isRGraph:true,type:'common'};
RGraph.Registry = {};
RGraph.Registry.store = [];
RGraph.Registry.store['chart.event.handlers'] = [];
RGraph.Registry.store['__rgraph_event_listeners__'] = []; // Used in the new system for tooltips
RGraph.background = {};
RGraph.objects = [];
RGraph.Resizing = {};
RGraph.events = [];
RGraph.cursor = [];
RGraph.ObjectRegistry = {};
RGraph.ObjectRegistry.objects = {};
RGraph.ObjectRegistry.objects.byUID = [];
RGraph.ObjectRegistry.objects.byCanvasID = [];
/**
* Some "constants"
*/
HALFPI = (Math.PI / 2);
PI = Math.PI;
TWOPI = PI * 2;
/**
* Returns five values which are used as a nice scale
*
* @param max int The maximum value of the graph
* @param obj object The graph object
* @return array An appropriate scale
*/
RGraph.getScale = function (max, obj)
{
/**
* Special case for 0
*/
if (max == 0) {
return ['0.2', '0.4', '0.6', '0.8', '1.0'];
}
var original_max = max;
/**
* Manually do decimals
*/
if (max <= 1) {
if (max > 0.5) {
return [0.2,0.4,0.6,0.8, Number(1).toFixed(1)];
} else if (max >= 0.1) {
return obj.Get('chart.scale.round') ? [0.2,0.4,0.6,0.8,1] : [0.1,0.2,0.3,0.4,0.5];
} else {
var tmp = max;
var exp = 0;
while (tmp < 1.01) {
exp += 1;
tmp *= 10;
}
var ret = ['2e-' + exp, '4e-' + exp, '6e-' + exp, '8e-' + exp, '10e-' + exp];
if (max <= ('5e-' + exp)) {
ret = ['1e-' + exp, '2e-' + exp, '3e-' + exp, '4e-' + exp, '5e-' + exp];
}
return ret;
}
}
// Take off any decimals
if (String(max).indexOf('.') > 0) {
max = String(max).replace(/\.\d+$/, '');
}
var interval = Math.pow(10, Number(String(Number(max)).length - 1));
var topValue = interval;
while (topValue < max) {
topValue += (interval / 2);
}
// Handles cases where the max is (for example) 50.5
if (Number(original_max) > Number(topValue)) {
topValue += (interval / 2);
}
// Custom if the max is greater than 5 and less than 10
if (max < 10) {
topValue = (Number(original_max) <= 5 ? 5 : 10);
}
/**
* Added 02/11/2010 to create "nicer" scales
*/
if (obj && typeof(obj.Get('chart.scale.round')) == 'boolean' && obj.Get('chart.scale.round')) {
topValue = 10 * interval;
}
return [topValue * 0.2, topValue * 0.4, topValue * 0.6, topValue * 0.8, topValue];
}
/**
* Returns the maximum numeric value which is in an array
*
* @param array arr The array (can also be a number, in which case it's returned as-is)
* @param int Whether to ignore signs (ie negative/positive)
* @return int The maximum value in the array
*/
RGraph.array_max = function (arr)
{
var max = null;
if (typeof(arr) == 'number') {
return arr;
}
for (var i=0; i<arr.length; ++i) {
if (typeof(arr[i]) == 'number') {
var val = arguments[1] ? Math.abs(arr[i]) : arr[i];
if (typeof(max) == 'number') {
max = Math.max(max, val);
} else {
max = val;
}
}
}
return max;
}
/**
* Returns the maximum value which is in an array
*
* @param array arr The array
* @param int len The length to pad the array to
* @param mixed The value to use to pad the array (optional)
*/
RGraph.array_pad = function (arr, len)
{
if (arr.length < len) {
var val = arguments[2] ? arguments[2] : null;
for (var i=arr.length; i<len; ++i) {
arr[i] = val;
}
}
return arr;
}
/**
* An array sum function
*
* @param array arr The array to calculate the total of
* @return int The summed total of the arrays elements
*/
RGraph.array_sum = function (arr)
{
// Allow integers
if (typeof(arr) == 'number') {
return arr;
}
var i, sum;
var len = arr.length;
for(i=0,sum=0;i<len;sum+=arr[i++]);
return sum;
}
/**
* Takes any number of arguments and adds them to one big linear array
* which is then returned
*
* @param ... mixed The data to linearise. You can strings, booleans, numbers or arrays
*/
RGraph.array_linearize = function ()
{
var arr = [];
for (var i=0; i<arguments.length; ++i) {
if (typeof(arguments[i]) == 'object' && arguments[i]) {
for (var j=0; j<arguments[i].length; ++j) {
var sub = RGraph.array_linearize(arguments[i][j]);
for (var k=0; k<sub.length; ++k) {
arr.push(sub[k]);
}
}
} else {
arr.push(arguments[i]);
}
}
return arr;
}
/**
* This is a useful function which is basically a shortcut for drawing left, right, top and bottom alligned text.
*
* @param object context The context
* @param string font The font
* @param int size The size of the text
* @param int x The X coordinate
* @param int y The Y coordinate
* @param string text The text to draw
* @parm string The vertical alignment. Can be null. "center" gives center aligned text, "top" gives top aligned text.
* Anything else produces bottom aligned text. Default is bottom.
* @param string The horizontal alignment. Can be null. "center" gives center aligned text, "right" gives right aligned text.
* Anything else produces left aligned text. Default is left.
* @param bool Whether to show a bounding box around the text. Defaults not to
* @param int The angle that the text should be rotate at (IN DEGREES)
* @param string Background color for the text
* @param bool Whether the text is bold or not
* @param bool Whether the bounding box has a placement indicator
*/
RGraph.Text = function (context, font, size, x, y, text)
{
// Handle undefined - change it to an empty string
if ((typeof(text) != 'string' && typeof(text) != 'number') || text == 'undefined') {
return;
}
/**
* Adjust the vertical Y coord if it should be vertically centered
*/
if (typeof(text) == 'string') {
if (text.indexOf('\r\n') > 0 && arguments[6] == 'center') {
var line_count = text.split('\r\n').length;
y = y - ((line_count - 1.5) * size);
} else if (text.indexOf('\r\n') > 0 && arguments[6] == 'bottom') {
var line_count = text.split('\r\n').length;
y = y - ((line_count - 0.5) * size);
}
}
/**
* This calls the text function recursively to accommodate multi-line text
*/
if (typeof(text) == 'string' && text.match(/\r\n/)) {
var arr = text.split('\r\n');
text = arr[0];
arr = RGraph.array_shift(arr);
var nextline = arr.join('\r\n')
RGraph.Text(context,
font,
size,
arguments[9] == -90 ? (x + (size * 1.5)) : x,
y + (size * 1.5),
nextline,
arguments[6] ? arguments[6] : null,
arguments[7],
arguments[8],
arguments[9],
arguments[10],
arguments[11],
arguments[12]);
}
// Accommodate MSIE
if (RGraph.isOld()) {
y += 2;
}
context.font = (arguments[11] ? 'Bold ': '') + size + 'pt ' + font;
var i;
var origX = x;
var origY = y;
var originalFillStyle = context.fillStyle;
var originalLineWidth = context.lineWidth;
// Need these now the angle can be specified, ie defaults for the former two args
if (typeof(arguments[6]) == null) arguments[6] = 'bottom'; // Vertical alignment. Default to bottom/baseline
if (typeof(arguments[7]) == null) arguments[7] = 'left'; // Horizontal alignment. Default to left
if (typeof(arguments[8]) == null) arguments[8] = null; // Show a bounding box. Useful for positioning during development. Defaults to false
if (typeof(arguments[9]) == null) arguments[9] = 0; // Angle (IN DEGREES) that the text should be drawn at. 0 is middle right, and it goes clockwise
if (typeof(arguments[12]) == null) arguments[12] = true; // Whether the bounding box has the placement indicator
// The alignment is recorded here for purposes of Opera compatibility
if (navigator.userAgent.indexOf('Opera') != -1) {
context.canvas.__rgraph_valign__ = arguments[6];
context.canvas.__rgraph_halign__ = arguments[7];
}
// First, translate to x/y coords
context.save();
context.canvas.__rgraph_originalx__ = x;
context.canvas.__rgraph_originaly__ = y;
context.translate(x, y);
x = 0;
y = 0;
// Rotate the canvas if need be
if (arguments[9]) {
context.rotate(arguments[9] / 57.3);
}
// Vertical alignment - defaults to bottom
if (arguments[6]) {
var vAlign = arguments[6];
if (vAlign == 'center') {
context.translate(0, size / 2);
} else if (vAlign == 'top') {
context.translate(0, size);
}
}
// Hoeizontal alignment - defaults to left
if (arguments[7]) {
var hAlign = arguments[7];
var width = context.measureText(text).width;
if (hAlign) {
if (hAlign == 'center') {
context.translate(-1 * (width / 2), 0)
} else if (hAlign == 'right') {
context.translate(-1 * width, 0)
}
}
}
context.fillStyle = originalFillStyle;
/**
* Draw a bounding box if requested
*/
context.save();
context.fillText(text,0,0);
context.lineWidth = 1;
if (arguments[8]) {
var width = context.measureText(text).width;
var ieOffset = RGraph.isIE8() ? 2 : 0;
context.translate(x, y);
context.strokeRect(AA(context.canvas.__object__, - 3), AA(context.canvas.__object__, 0 - 3 - size - ieOffset), width + 6, 0 + size + 6);
/**
* If requested, draw a background for the text
*/
if (arguments[10]) {
var offset = 3;
var ieOffset = RGraph.isIE8() ? 2 : 0;
var width = context.measureText(text).width
//context.strokeStyle = 'gray';
context.fillStyle = arguments[10];
context.fillRect(AA(context.canvas.__object__, x - offset),
AA(context.canvas.__object__, y - size - offset - ieOffset),
width + (2 * offset),
size + (2 * offset));
//context.strokeRect(x - offset, y - size - offset - ieOffset, width + (2 * offset), size + (2 * offset));
}
/**
* Do the actual drawing of the text
*/
context.fillStyle = originalFillStyle;
if (arguments[6] = 'center') {
context.ttextBaseline = 'middle';
}
context.fillText(text,0,0);
if (arguments[12]) {
context.fillRect(
arguments[7] == 'left' ? 0 : (arguments[7] == 'center' ? width / 2 : width ) - 2,
arguments[6] == 'bottom' ? 0 : (arguments[6] == 'center' ? (0 - size) / 2 : 0 - size) - 2,
4,
4
);
}
}
context.restore();
// Reset the lineWidth
context.lineWidth = originalLineWidth;
context.restore();
}
/**
* Clears the canvas by setting the width. You can specify a colour if you wish.
*
* @param object canvas The canvas to clear
*/
RGraph.Clear = function (canvas)
{
if (!canvas) {
return;
}
RGraph.FireCustomEvent(canvas.__object__, 'onbeforeclear');
var context = canvas.getContext('2d');
var color = arguments[1];
if (RGraph.isIE8() && !color) {
color = 'white';
}
/**
* Can now clear the canvas back to fully transparent
*/
if (!color || (color && color == 'transparent')) {
context.clearRect(0,0,canvas.width, canvas.height);
// Reset the globalCompositeOperation
context.globalCompositeOperation = 'source-over';
} else {
context.fillStyle = color;
context = canvas.getContext('2d');
context.beginPath();
if (RGraph.isIE8()) {
context.fillRect(0,0,canvas.width,canvas.height);
} else {
context.fillRect(-10,-10,canvas.width + 20,canvas.height + 20);
}
context.fill();
}
if (RGraph.ClearAnnotations) {
//RGraph.ClearAnnotations(canvas.id);
}
/**
* This removes any background image that may be present
*/
if (RGraph.Registry.Get('chart.background.image.' + canvas.id)) {
var img = RGraph.Registry.Get('chart.background.image.' + canvas.id);
img.style.position = 'absolute';
img.style.left = '-10000px';
img.style.top = '-10000px';
}
/**
* This hides the tooltip that is showing IF it has the same canvas ID as
* that which is being cleared
*/
if (RGraph.Registry.Get('chart.tooltip')) {
RGraph.HideTooltip();
//RGraph.Redraw();
}
/**
* Set the cursor to default
*/
canvas.style.cursor = 'default';
RGraph.FireCustomEvent(canvas.__object__, 'onclear');
}
/**
* Draws the title of the graph
*
* @param object canvas The canvas object
* @param string text The title to write
* @param integer gutter The size of the gutter
* @param integer The center X point (optional - if not given it will be generated from the canvas width)
* @param integer Size of the text. If not given it will be 14
*/
RGraph.DrawTitle = function (obj, text, gutterTop)
{
var canvas = obj.canvas;
var context = obj.context;
var gutterLeft = obj.Get('chart.gutter.left');
var gutterRight = obj.Get('chart.gutter.right');
var gutterBottom = obj.Get('chart.gutter.bottom');
var size = arguments[4] ? arguments[4] : 12;
var bold = obj.Get('chart.title.bold');
var centerx = (arguments[3] ? arguments[3] : ((obj.canvas.width - gutterLeft - gutterRight) / 2) + gutterLeft);
var keypos = obj.Get('chart.key.position');
var vpos = obj.Get('chart.title.vpos');
var hpos = obj.Get('chart.title.hpos');
var bgcolor = obj.Get('chart.title.background');
// Account for 3D effect by faking the key position
if (obj.type == 'bar' && obj.Get('chart.variant') == '3d') {
keypos = 'gutter';
}
context.beginPath();
context.fillStyle = obj.Get('chart.text.color') ? obj.Get('chart.text.color') : 'black';
/**
* Vertically center the text if the key is not present
*/
if (keypos && keypos != 'gutter') {
var vCenter = 'center';
} else if (!keypos) {
var vCenter = 'center';
} else {
var vCenter = 'bottom';
}
// if chart.title.vpos does not equal 0.5, use that
if (typeof(obj.Get('chart.title.vpos')) == 'number') {
vpos = obj.Get('chart.title.vpos') * gutterTop;
if (obj.Get('chart.xaxispos') == 'top') {
vpos = obj.Get('chart.title.vpos') * gutterBottom + gutterTop + (obj.canvas.height - gutterTop - gutterBottom);
}
} else {
vpos = gutterTop - size - 5;
if (obj.Get('chart.xaxispos') == 'top') {
vpos = obj.canvas.height - gutterBottom + size + 5;
}
}
// if chart.title.hpos is a number, use that. It's multiplied with the (entire) canvas width
if (typeof(hpos) == 'number') {
centerx = hpos * canvas.width;
}
// Set the colour
if (typeof(obj.Get('chart.title.color') != null)) {
var oldColor = context.fillStyle
var newColor = obj.Get('chart.title.color')
context.fillStyle = newColor ? newColor : 'black';
}
/**
* Default font is Verdana
*/
var font = obj.Get('chart.text.font');
/**
* Override the default font with chart.title.font
*/
if (typeof(obj.Get('chart.title.font')) == 'string') {
font = obj.Get('chart.title.font');
}
/**
* Draw the title itself
*/
RGraph.Text(context, font, size, centerx, vpos, text, vCenter, 'center', bgcolor != null, null, bgcolor, bold);
// Reset the fill colour
context.fillStyle = oldColor;
}
/**
* This function returns the mouse position in relation to the canvas
*
* @param object e The event object.
*/
RGraph.getMouseXY = function (e)
{
var el = ((RGraph.isIE8() || RGraph.isIE7()) ? event.srcElement : e.target);
var x;
var y;
// ???
var paddingLeft = el.style.paddingLeft ? parseInt(el.style.paddingLeft) : 0;
var paddingTop = el.style.paddingTop ? parseInt(el.style.paddingTop) : 0;
var borderLeft = el.style.borderLeftWidth ? parseInt(el.style.borderLeftWidth) : 0;
var borderTop = el.style.borderTopWidth ? parseInt(el.style.borderTopWidth) : 0;
if (RGraph.isIE8()) e = event;
// Browser with offsetX and offsetY
if (typeof(e.offsetX) == 'number' && typeof(e.offsetY) == 'number') {
x = e.offsetX;
y = e.offsetY;
// FF and other
} else {
x = 0;
y = 0;
while (el != document.body && el) {
x += el.offsetLeft;
y += el.offsetTop;
el = el.offsetParent;
}
x = e.pageX - x;
y = e.pageY - y;
}
return [x, y];
}
/**
* This function returns a two element array of the canvas x/y position in
* relation to the page
*
* @param object canvas
*/
RGraph.getCanvasXY = function (canvas)
{
var x = 0;
var y = 0;
var obj = canvas;
do {
x += obj.offsetLeft;
y += obj.offsetTop;
obj = obj.offsetParent;
} while (obj && obj.tagName.toLowerCase() != 'body');
var paddingLeft = canvas.style.paddingLeft ? parseInt(canvas.style.paddingLeft) : 0;
var paddingTop = canvas.style.paddingTop ? parseInt(canvas.style.paddingTop) : 0;
var borderLeft = canvas.style.borderLeftWidth ? parseInt(canvas.style.borderLeftWidth) : 0;
var borderTop = canvas.style.borderTopWidth ? parseInt(canvas.style.borderTopWidth) : 0;
return [x + paddingLeft + borderLeft, y + paddingTop + borderTop];
}
/**
* Registers a graph object (used when the canvas is redrawn)
*
* @param object obj The object to be registered
*/
RGraph.Register = function (obj)
{
// Checking this property ensures the object is only registered once
if (!obj.Get('chart.noregister')) {
// As of 21st/1/2012 the object registry is now used
RGraph.ObjectRegistry.Add(obj);
obj.Set('chart.noregister', true);
}
}
/**
* Causes all registered objects to be redrawn
*
* @param string An optional color to use to clear the canvas
*/
RGraph.Redraw = function ()
{
var objectRegistry = RGraph.ObjectRegistry.objects.byCanvasID;
// Get all of the canvas tags on the page
var tags = document.getElementsByTagName('canvas');
for (var i=0; i<tags.length; ++i) {
if (tags[i].__object__ && tags[i].__object__.isRGraph) {
RGraph.Clear(tags[i], arguments[0] ? arguments[0] : null);
}
}
// Go through the object registry and redraw *all* of the canvas'es that have been registered
for (var i=0; i<objectRegistry.length; ++i) {
if (objectRegistry[i]) {
var id = objectRegistry[i][0];
objectRegistry[i][1].Draw();
}
}
}
/**
* Causes all registered objects ON THE GIVEN CANVAS to be redrawn
*
* @param canvas object The canvas object to redraw
* @param bool Optional boolean which defaults to true and determines whether to clear the canvas
*/
RGraph.RedrawCanvas = function (canvas)
{
var objects = RGraph.ObjectRegistry.getObjectsByCanvasID(canvas.id);
/**
* First clear the canvas
*/
if (!arguments[1] || (typeof(arguments[1]) == 'boolean' && !arguments[1] == false) ) {
RGraph.Clear(canvas);
}
/**
* Now redraw all the charts associated with that canvas
*/
for (var i=0; i<objects.length; ++i) {
if (objects[i]) {
if (objects[i] && objects[i].isRGraph) { // Is it an RGraph object ??
objects[i].Draw();
}
}
}
}
/**
* This function draws the background for the bar chart, line chart and scatter chart.
*
* @param object obj The graph object
*/
RGraph.background.Draw = function (obj)
{
var canvas = obj.canvas;
var context = obj.context;
var height = 0;
var gutterLeft = obj.Get('chart.gutter.left');
var gutterRight = obj.Get('chart.gutter.right');
var gutterTop = obj.Get('chart.gutter.top');
var gutterBottom = obj.Get('chart.gutter.bottom');
var variant = obj.Get('chart.variant');
context.fillStyle = obj.Get('chart.text.color');
// If it's a bar and 3D variant, translate
if (variant == '3d') {
context.save();
context.translate(10, -5);
}
// X axis title
if (typeof(obj.Get('chart.title.xaxis')) == 'string' && obj.Get('chart.title.xaxis').length) {
var size = obj.Get('chart.text.size') + 2;
var font = obj.Get('chart.text.font');
var bold = obj.Get('chart.title.xaxis.bold');
if (typeof(obj.Get('chart.title.xaxis.size')) == 'number') {
size = obj.Get('chart.title.xaxis.size');
}
if (typeof(obj.Get('chart.title.xaxis.font')) == 'string') {
font = obj.Get('chart.title.xaxis.font');
}
var hpos = ((obj.canvas.width - obj.gutterLeft - obj.gutterRight) / 2) + obj.gutterLeft;
var vpos = obj.canvas.height - obj.Get('chart.gutter.bottom') + 25;
if (typeof(obj.Get('chart.title.xaxis.pos')) == 'number') {
vpos = obj.canvas.height - (gutterBottom * obj.Get('chart.title.xaxis.pos'));
}
context.beginPath();
RGraph.Text(context,
font,
size,
hpos,
vpos,
obj.Get('chart.title.xaxis'),
'center',
'center',
false,
false,
false,
bold);
context.fill();
}
// Y axis title
if (typeof(obj.Get('chart.title.yaxis')) == 'string' && obj.Get('chart.title.yaxis').length) {
var size = obj.Get('chart.text.size') + 2;
var font = obj.Get('chart.text.font');
var angle = 270;
var bold = obj.Get('chart.title.yaxis.bold');
if (typeof(obj.Get('chart.title.yaxis.pos')) == 'number') {
var yaxis_title_pos = obj.Get('chart.title.yaxis.pos') * obj.Get('chart.gutter.left');
} else {
var yaxis_title_pos = ((obj.Get('chart.gutter.left') - 25) / obj.Get('chart.gutter.left')) * obj.Get('chart.gutter.left');
}
if (typeof(obj.Get('chart.title.yaxis.size')) == 'number') {
size = obj.Get('chart.title.yaxis.size');
}
if (typeof(obj.Get('chart.title.yaxis.font')) == 'string') {
font = obj.Get('chart.title.yaxis.font');
}
if (obj.Get('chart.title.yaxis.align') == 'right' || obj.Get('chart.title.yaxis.position') == 'right') {
angle = 90;
yaxis_title_pos = obj.Get('chart.title.yaxis.pos') ? obj.Get('chart.title.yaxis.pos') * obj.Get('chart.gutter.right') :
obj.canvas.width - obj.Get('chart.gutter.right') + obj.Get('chart.text.size') + 5;
} else {
yaxis_title_pos = yaxis_title_pos;
}
context.beginPath();
RGraph.Text(context,
font,
size,
yaxis_title_pos,
((obj.canvas.height - obj.gutterTop - obj.gutterBottom) / 2) + obj.gutterTop,
obj.Get('chart.title.yaxis'),
'center',
'center',
false,
angle,
false,
bold);
context.fill();
}
obj.context.beginPath();
// Draw the horizontal bars
context.fillStyle = obj.Get('chart.background.barcolor1');
height = (RGraph.GetHeight(obj) - gutterBottom);
for (var i=gutterTop; i < height ; i+=80) {
obj.context.fillRect(gutterLeft, i, RGraph.GetWidth(obj) - gutterLeft - gutterRight, Math.min(40, RGraph.GetHeight(obj) - gutterBottom - i) );
}
context.fillStyle = obj.Get('chart.background.barcolor2');
height = (RGraph.GetHeight(obj) - gutterBottom);
for (var i= (40 + gutterTop); i < height; i+=80) {
obj.context.fillRect(gutterLeft, i, RGraph.GetWidth(obj) - gutterLeft - gutterRight, i + 40 > (RGraph.GetHeight(obj) - gutterBottom) ? RGraph.GetHeight(obj) - (gutterBottom + i) : 40);
}
context.stroke();
// Draw the background grid
if (obj.Get('chart.background.grid')) {
// If autofit is specified, use the .numhlines and .numvlines along with the width to work
// out the hsize and vsize
if (obj.Get('chart.background.grid.autofit')) {
/**
* Align the grid to the tickmarks
*/
if (obj.Get('chart.background.grid.autofit.align')) {
// Align the horizontal lines
obj.Set('chart.background.grid.autofit.numhlines', obj.Get('chart.ylabels.count'));
// Align the vertical lines for the line
if (obj.type == 'line') {
if (obj.Get('chart.labels') && obj.Get('chart.labels').length) {
obj.Set('chart.background.grid.autofit.numvlines', obj.Get('chart.labels').length - 1);
} else {
obj.Set('chart.background.grid.autofit.numvlines', obj.data[0].length - 1);
}
// Align the vertical lines for the bar
} else if (obj.type == 'bar' && obj.Get('chart.labels') && obj.Get('chart.labels').length) {
obj.Set('chart.background.grid.autofit.numvlines', obj.Get('chart.labels').length);
}
}
var vsize = ((obj.canvas.width - gutterLeft - gutterRight)) / obj.Get('chart.background.grid.autofit.numvlines');
var hsize = (obj.canvas.height - gutterTop - gutterBottom) / obj.Get('chart.background.grid.autofit.numhlines');
obj.Set('chart.background.grid.vsize', vsize);
obj.Set('chart.background.grid.hsize', hsize);
}
context.beginPath();
context.lineWidth = obj.Get('chart.background.grid.width') ? obj.Get('chart.background.grid.width') : 1;
context.strokeStyle = obj.Get('chart.background.grid.color');
// Draw the horizontal lines
if (obj.Get('chart.background.grid.hlines')) {
height = (RGraph.GetHeight(obj) - gutterBottom)
for (y=gutterTop; y<height; y+=obj.Get('chart.background.grid.hsize')) {
context.moveTo(gutterLeft, AA(this, y));
context.lineTo(RGraph.GetWidth(obj) - gutterRight, AA(this, y));
}
}
if (obj.Get('chart.background.grid.vlines')) {
// Draw the vertical lines
var width = (obj.canvas.width - gutterRight)
for (x=gutterLeft; x<=width; x+=obj.Get('chart.background.grid.vsize')) {
context.moveTo(AA(this, x), gutterTop);
context.lineTo(AA(this, x), obj.canvas.height - gutterBottom);
}
}
if (obj.Get('chart.background.grid.border')) {
// Make sure a rectangle, the same colour as the grid goes around the graph
context.strokeStyle = obj.Get('chart.background.grid.color');
context.strokeRect(AA(this, gutterLeft), AA(this, gutterTop), RGraph.GetWidth(obj) - gutterLeft - gutterRight, RGraph.GetHeight(obj) - gutterTop - gutterBottom);
}
}
context.stroke();
// If it's a bar and 3D variant, translate
if (variant == '3d') {
context.restore();
}
// Draw the title if one is set
if ( typeof(obj.Get('chart.title')) == 'string') {
if (obj.type == 'gantt') {
gutterTop -= 10;
}
RGraph.DrawTitle(obj,
obj.Get('chart.title'),
gutterTop,
null,
obj.Get('chart.title.size') ? obj.Get('chart.title.size') : obj.Get('chart.text.size') + 2);
}
context.stroke();
}
/**
* Returns the day number for a particular date. Eg 1st February would be 32
*
* @param object obj A date object
* @return int The day number of the given date
*/
RGraph.GetDays = function (obj)
{
var year = obj.getFullYear();
var days = obj.getDate();
var month = obj.getMonth();
if (month == 0) return days;
if (month >= 1) days += 31;
if (month >= 2) days += 28;
// Leap years. Crude, but it functions
if (year >= 2008 && year % 4 == 0) days += 1;
if (month >= 3) days += 31;
if (month >= 4) days += 30;
if (month >= 5) days += 31;
if (month >= 6) days += 30;
if (month >= 7) days += 31;
if (month >= 8) days += 31;
if (month >= 9) days += 30;
if (month >= 10) days += 31;
if (month >= 11) days += 30;
return days;
}
/**
* Makes a clone of an object
*
* @param obj val The object to clone
*/
RGraph.array_clone = function (obj)
{
if(obj == null || typeof(obj) != 'object') {
return obj;
}
var temp = [];
for (var i=0;i<obj.length; ++i) {
if (typeof(obj[i]) == 'number') {
temp[i] = (function (arg) {return Number(arg);})(obj[i]);
} else if (typeof(obj[i]) == 'string') {
temp[i] = (function (arg) {return String(arg);})(obj[i]);
} else if (typeof(obj[i]) == 'function') {
temp[i] = obj[i];
} else {
temp[i] = RGraph.array_clone(obj[i]);
}
}
return temp;
}
/**
* Formats a number with thousand seperators so it's easier to read
*
* @param integer num The number to format
* @param string The (optional) string to prepend to the string
* @param string The (optional) string to ap
* pend to the string
* @return string The formatted number
*/
RGraph.number_format = function (obj, num)
{
var i;
var prepend = arguments[2] ? String(arguments[2]) : '';
var append = arguments[3] ? String(arguments[3]) : '';
var output = '';
var decimal = '';
var decimal_seperator = obj.Get('chart.scale.point') ? obj.Get('chart.scale.point') : '.';
var thousand_seperator = obj.Get('chart.scale.thousand') ? obj.Get('chart.scale.thousand') : ',';
RegExp.$1 = '';
var i,j;
if (typeof(obj.Get('chart.scale.formatter')) == 'function') {
return obj.Get('chart.scale.formatter')(obj, num);
}
// Ignore the preformatted version of "1e-2"
if (String(num).indexOf('e') > 0) {
return String(prepend + String(num) + append);
}
// We need then number as a string
num = String(num);
// Take off the decimal part - we re-append it later
if (num.indexOf('.') > 0) {
var tmp = num;
num = num.replace(/\.(.*)/, ''); // The front part of the number
decimal = tmp.replace(/(.*)\.(.*)/, '$2'); // The decimal part of the number
}
// Thousand seperator
//var seperator = arguments[1] ? String(arguments[1]) : ',';
var seperator = thousand_seperator;
/**
* Work backwards adding the thousand seperators
*/
var foundPoint;
for (i=(num.length - 1),j=0; i>=0; j++,i--) {
var character = num.charAt(i);
if ( j % 3 == 0 && j != 0) {
output += seperator;
}
/**
* Build the output
*/
output += character;
}
/**
* Now need to reverse the string
*/
var rev = output;
output = '';
for (i=(rev.length - 1); i>=0; i--) {
output += rev.charAt(i);
}
// Tidy up
//output = output.replace(/^-,/, '-');
if (output.indexOf('-' + obj.Get('chart.scale.thousand')) == 0) {
output = '-' + output.substr(('-' + obj.Get('chart.scale.thousand')).length);
}
// Reappend the decimal
if (decimal.length) {
output = output + decimal_seperator + decimal;
decimal = '';
RegExp.$1 = '';
}
// Minor bugette
if (output.charAt(0) == '-') {
output = output.replace(/-/, '');
prepend = '-' + prepend;
}
return prepend + output + append;
}
/**
* Draws horizontal coloured bars on something like the bar, line or scatter
*/
RGraph.DrawBars = function (obj)
{
var hbars = obj.Get('chart.background.hbars');
/**
* Draws a horizontal bar
*/
obj.context.beginPath();
for (i=0; i<hbars.length; ++i) {
// If null is specified as the "height", set it to the upper max value
if (hbars[i][1] == null) {
hbars[i][1] = obj.max;
// If the first index plus the second index is greater than the max value, adjust accordingly
} else if (hbars[i][0] + hbars[i][1] > obj.max) {
hbars[i][1] = obj.max - hbars[i][0];
}
// If height is negative, and the abs() value is greater than .max, use a negative max instead
if (Math.abs(hbars[i][1]) > obj.max) {
hbars[i][1] = -1 * obj.max;
}
// If start point is greater than max, change it to max
if (Math.abs(hbars[i][0]) > obj.max) {
hbars[i][0] = obj.max;
}
// If start point plus height is less than negative max, use the negative max plus the start point
if (hbars[i][0] + hbars[i][1] < (-1 * obj.max) ) {
hbars[i][1] = -1 * (obj.max + hbars[i][0]);
}
// If the X axis is at the bottom, and a negative max is given, warn the user
if (obj.Get('chart.xaxispos') == 'bottom' && (hbars[i][0] < 0 || (hbars[i][1] + hbars[i][1] < 0)) ) {
alert('[' + obj.type.toUpperCase() + ' (ID: ' + obj.id + ') BACKGROUND HBARS] You have a negative value in one of your background hbars values, whilst the X axis is in the center');
}
var ystart = (obj.grapharea - ((hbars[i][0] / obj.max) * obj.grapharea));
var height = (Math.min(hbars[i][1], obj.max - hbars[i][0]) / obj.max) * obj.grapharea;
// Account for the X axis being in the center
if (obj.Get('chart.xaxispos') == 'center') {
ystart /= 2;
height /= 2;
}
ystart += obj.Get('chart.gutter.top')
var x = obj.Get('chart.gutter.left');
var y = ystart - height;
var w = obj.canvas.width - obj.Get('chart.gutter.left') - obj.Get('chart.gutter.right');
var h = height;
// Accommodate Opera :-/
if (navigator.userAgent.indexOf('Opera') != -1 && obj.Get('chart.xaxispos') == 'center' && h < 0) {
h *= -1;
y = y - h;
}
/**
* Account for X axis at the top
*/
if (obj.Get('chart.xaxispos') == 'top') {
y = obj.canvas.height - y;
h *= -1;
}
obj.context.fillStyle = hbars[i][2];
obj.context.fillRect(x, y, w, h);
}
obj.context.fill();
}
/**
* Draws in-graph labels.
*
* @param object obj The graph object
*/
RGraph.DrawInGraphLabels = function (obj)
{
var canvas = obj.canvas;
var context = obj.context;
var labels = obj.Get('chart.labels.ingraph');
var labels_processed = [];
// Defaults
var fgcolor = 'black';
var bgcolor = 'white';
var direction = 1;
if (!labels) {
return;
}
/**
* Preprocess the labels array. Numbers are expanded
*/
for (var i=0; i<labels.length; ++i) {
if (typeof(labels[i]) == 'number') {
for (var j=0; j<labels[i]; ++j) {
labels_processed.push(null);
}
} else if (typeof(labels[i]) == 'string' || typeof(labels[i]) == 'object') {
labels_processed.push(labels[i]);
} else {
labels_processed.push('');
}
}
/**
* Turn off any shadow
*/
RGraph.NoShadow(obj);
if (labels_processed && labels_processed.length > 0) {
for (var i=0; i<labels_processed.length; ++i) {
if (labels_processed[i]) {
var coords = obj.coords[i];
if (coords && coords.length > 0) {
var x = (obj.type == 'bar' ? coords[0] + (coords[2] / 2) : coords[0]);
var y = (obj.type == 'bar' ? coords[1] + (coords[3] / 2) : coords[1]);
var length = typeof(labels_processed[i][4]) == 'number' ? labels_processed[i][4] : 25;
context.beginPath();
context.fillStyle = 'black';
context.strokeStyle = 'black';
if (obj.type == 'bar') {
/**
* X axis at the top
*/
if (obj.Get('chart.xaxispos') == 'top') {
length *= -1;
}
if (obj.Get('chart.variant') == 'dot') {
context.moveTo(AA(obj, x), obj.coords[i][1] - 5);
context.lineTo(AA(obj, x), obj.coords[i][1] - 5 - length);
var text_x = AA(obj, x);
var text_y = obj.coords[i][1] - 5 - length;
} else if (obj.Get('chart.variant') == 'arrow') {
context.moveTo(AA(obj, x), obj.coords[i][1] - 5);
context.lineTo(AA(obj, x), obj.coords[i][1] - 5 - length);
var text_x = AA(obj, x);
var text_y = obj.coords[i][1] - 5 - length;
} else {
context.arc(AA(obj, x), y, 2.5, 0, 6.28, 0);
context.moveTo(AA(obj, x), y);
context.lineTo(AA(obj, x), y - length);
var text_x = AA(obj, x);
var text_y = y - length;
}
context.stroke();
context.fill();
} else if (obj.type == 'line') {
if (
typeof(labels_processed[i]) == 'object' &&
typeof(labels_processed[i][3]) == 'number' &&
labels_processed[i][3] == -1
) {
context.moveTo(AA(obj, x), y + 5);
context.lineTo(AA(obj, x), y + 5 + length);
context.stroke();
context.beginPath();
// This draws the arrow
context.moveTo(AA(obj, x), y + 5);
context.lineTo(AA(obj, x) - 3, y + 10);
context.lineTo(AA(obj, x) + 3, y + 10);
context.closePath();
var text_x = x;
var text_y = y + 5 + length;
} else {
var text_x = x;
var text_y = y - 5 - length;
context.moveTo(AA(obj, x), y - 5);
context.lineTo(AA(obj, x), y - 5 - length);
context.stroke();
context.beginPath();
// This draws the arrow
context.moveTo(AA(obj, x), y - 5);
context.lineTo(AA(obj, x) - 3, y - 10);
context.lineTo(AA(obj, x) + 3, y - 10);
context.closePath();
}
context.fill();
}
// Taken out on the 10th Nov 2010 - unnecessary
//var width = context.measureText(labels[i]).width;
context.beginPath();
// Fore ground color
context.fillStyle = (typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][1]) == 'string') ? labels_processed[i][1] : 'black';
RGraph.Text(context,
obj.Get('chart.text.font'),
obj.Get('chart.text.size'),
text_x,
text_y,
(typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][0]) == 'string') ? labels_processed[i][0] : labels_processed[i],
'bottom',
'center',
true,
null,
(typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][2]) == 'string') ? labels_processed[i][2] : 'white');
context.fill();
}
}
}
}
}
/**
* This function "fills in" key missing properties that various implementations lack
*
* @param object e The event object
*/
RGraph.FixEventObject = function (e)
{
if (RGraph.isIE8() || RGraph.isIE7()) {
var e = event;
e.pageX = (event.clientX + document.body.scrollLeft);
e.pageY = (event.clientY + document.body.scrollTop);
e.target = event.srcElement;
if (!document.body.scrollTop && document.documentElement.scrollTop) {
e.pageX += parseInt(document.documentElement.scrollLeft);
e.pageY += parseInt(document.documentElement.scrollTop);
}
}
// This is mainly for FF which doesn't provide offsetX
if (typeof(e.offsetX) == 'undefined' && typeof(e.offsetY) == 'undefined') {
var coords = RGraph.getMouseXY(e);
e.offsetX = coords[0];
e.offsetY = coords[1];
}
// Any browser that doesn't implement stopPropagation() (MSIE)
if (!e.stopPropagation) {
e.stopPropagation = function () {window.event.cancelBubble = true;}
}
return e;
}
/**
* Thisz function hides the crosshairs coordinates
*/
RGraph.HideCrosshairCoords = function ()
{
var div = RGraph.Registry.Get('chart.coordinates.coords.div');
if ( div
&& div.style.opacity == 1
&& div.__object__.Get('chart.crosshairs.coords.fadeout')
) {
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.9;}, 50);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.8;}, 100);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.7;}, 150);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.6;}, 200);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.5;}, 250);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.4;}, 300);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.3;}, 350);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.2;}, 400);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0.1;}, 450);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.opacity = 0;}, 500);
setTimeout(function() {RGraph.Registry.Get('chart.coordinates.coords.div').style.display = 'none';}, 550);
}
}
/**
* Draws the3D axes/background
*/
RGraph.Draw3DAxes = function (obj)
{
var gutterLeft = obj.Get('chart.gutter.left');
var gutterRight = obj.Get('chart.gutter.right');
var gutterTop = obj.Get('chart.gutter.top');
var gutterBottom = obj.Get('chart.gutter.bottom');
var context = obj.context;
var canvas = obj.canvas;
context.strokeStyle = '#aaa';
context.fillStyle = '#ddd';
// Draw the vertical left side
context.beginPath();
context.moveTo(gutterLeft, gutterTop);
context.lineTo(gutterLeft + 10, gutterTop - 5);
context.lineTo(gutterLeft + 10, canvas.height - gutterBottom - 5);
context.lineTo(gutterLeft, canvas.height - gutterBottom);
context.closePath();
context.stroke();
context.fill();
// Draw the bottom floor
context.beginPath();
context.moveTo(gutterLeft, canvas.height - gutterBottom);
context.lineTo(gutterLeft + 10, canvas.height - gutterBottom - 5);
context.lineTo(canvas.width - gutterRight + 10, canvas.height - gutterBottom - 5);
context.lineTo(canvas.width - gutterRight, canvas.height - gutterBottom);
context.closePath();
context.stroke();
context.fill();
}
/**
* This function attempts to "fill in" missing functions from the canvas
* context object. Only two at the moment - measureText() nd fillText().
*
* @param object context The canvas 2D context
*/
RGraph.OldBrowserCompat = function (context)
{
if (!context) {
return;
}
if (!context.measureText) {
// This emulates the measureText() function
context.measureText = function (text)
{
var textObj = document.createElement('DIV');
textObj.innerHTML = text;
textObj.style.backgroundColor = 'white';
textObj.style.position = 'absolute';
textObj.style.top = -100
textObj.style.left = 0;
document.body.appendChild(textObj);
var width = {width: textObj.offsetWidth};
textObj.style.display = 'none';
return width;
}
}
if (!context.fillText) {
// This emulates the fillText() method
context.fillText = function (text, targetX, targetY)
{
return false;
}
}
// If IE8, add addEventListener()
if (!context.canvas.addEventListener) {
window.addEventListener = function (ev, func, bubble)
{
return this.attachEvent('on' + ev, func);
}
context.canvas.addEventListener = function (ev, func, bubble)
{
return this.attachEvent('on' + ev, func);
}
}
}
/**
* Draws a rectangle with curvy corners
*
* @param context object The context
* @param x number The X coordinate (top left of the square)
* @param y number The Y coordinate (top left of the square)
* @param w number The width of the rectangle
* @param h number The height of the rectangle
* @param number The radius of the curved corners
* @param boolean Whether the top left corner is curvy
* @param boolean Whether the top right corner is curvy
* @param boolean Whether the bottom right corner is curvy
* @param boolean Whether the bottom left corner is curvy
*/
RGraph.strokedCurvyRect = function (context, x, y, w, h)
{
// The corner radius
var r = arguments[5] ? arguments[5] : 3;
// The corners
var corner_tl = (arguments[6] || arguments[6] == null) ? true : false;
var corner_tr = (arguments[7] || arguments[7] == null) ? true : false;
var corner_br = (arguments[8] || arguments[8] == null) ? true : false;
var corner_bl = (arguments[9] || arguments[9] == null) ? true : false;
context.beginPath();
// Top left side
context.moveTo(x + (corner_tl ? r : 0), y);
context.lineTo(x + w - (corner_tr ? r : 0), y);
// Top right corner
if (corner_tr) {
context.arc(x + w - r, y + r, r, PI + HALFPI, TWOPI, false);
}
// Top right side
context.lineTo(x + w, y + h - (corner_br ? r : 0) );
// Bottom right corner
if (corner_br) {
context.arc(x + w - r, y - r + h, r, TWOPI, HALFPI, false);
}
// Bottom right side
context.lineTo(x + (corner_bl ? r : 0), y + h);
// Bottom left corner
if (corner_bl) {
context.arc(x + r, y - r + h, r, HALFPI, PI, false);
}
// Bottom left side
context.lineTo(x, y + (corner_tl ? r : 0) );
// Top left corner
if (corner_tl) {
context.arc(x + r, y + r, r, PI, PI + HALFPI, false);
}
context.stroke();
}
/**
* Draws a filled rectangle with curvy corners
*
* @param context object The context
* @param x number The X coordinate (top left of the square)
* @param y number The Y coordinate (top left of the square)
* @param w number The width of the rectangle
* @param h number The height of the rectangle
* @param number The radius of the curved corners
* @param boolean Whether the top left corner is curvy
* @param boolean Whether the top right corner is curvy
* @param boolean Whether the bottom right corner is curvy
* @param boolean Whether the bottom left corner is curvy
*/
RGraph.filledCurvyRect = function (context, x, y, w, h)
{
// The corner radius
var r = arguments[5] ? arguments[5] : 3;
// The corners
var corner_tl = (arguments[6] || arguments[6] == null) ? true : false;
var corner_tr = (arguments[7] || arguments[7] == null) ? true : false;
var corner_br = (arguments[8] || arguments[8] == null) ? true : false;
var corner_bl = (arguments[9] || arguments[9] == null) ? true : false;
context.beginPath();
// First draw the corners
// Top left corner
if (corner_tl) {
context.moveTo(x + r, y + r);
context.arc(x + r, y + r, r, PI, PI + HALFPI, false);
} else {
context.fillRect(x, y, r, r);
}
// Top right corner
if (corner_tr) {
context.moveTo(x + w - r, y + r);
context.arc(x + w - r, y + r, r, PI + HALFPI, 0, false);
} else {
context.moveTo(x + w - r, y);
context.fillRect(x + w - r, y, r, r);
}
// Bottom right corner
if (corner_br) {
context.moveTo(x + w - r, y + h - r);
context.arc(x + w - r, y - r + h, r, 0, HALFPI, false);
} else {
context.moveTo(x + w - r, y + h - r);
context.fillRect(x + w - r, y + h - r, r, r);
}
// Bottom left corner
if (corner_bl) {
context.moveTo(x + r, y + h - r);
context.arc(x + r, y - r + h, r, HALFPI, PI, false);
} else {
context.moveTo(x, y + h - r);
context.fillRect(x, y + h - r, r, r);
}
// Now fill it in
context.fillRect(x + r, y, w - r - r, h);
context.fillRect(x, y + r, r + 1, h - r - r);
context.fillRect(x + w - r - 1, y + r, r + 1, h - r - r);
context.fill();
}
/**
* Hides the zoomed canvas
*/
RGraph.HideZoomedCanvas = function ()
{
var interval = 15;
var frames = 10;
if (typeof(__zoomedimage__) == 'object') {
obj = __zoomedimage__.obj;
} else {
return;
}
if (obj.Get('chart.zoom.fade.out')) {
for (var i=frames,j=1; i>=0; --i, ++j) {
if (typeof(__zoomedimage__) == 'object') {
setTimeout("__zoomedimage__.style.opacity = " + String(i / 10), j * interval);
}
}
if (typeof(__zoomedbackground__) == 'object') {
setTimeout("__zoomedbackground__.style.opacity = " + String(i / frames), j * interval);
}
}
if (typeof(__zoomedimage__) == 'object') {
setTimeout("__zoomedimage__.style.display = 'none'", obj.Get('chart.zoom.fade.out') ? (frames * interval) + 10 : 0);
}
if (typeof(__zoomedbackground__) == 'object') {
setTimeout("__zoomedbackground__.style.display = 'none'", obj.Get('chart.zoom.fade.out') ? (frames * interval) + 10 : 0);
}
}
/**
* Adds an event handler
*
* @param object obj The graph object
* @param string event The name of the event, eg ontooltip
* @param object func The callback function
*/
RGraph.AddCustomEventListener = function (obj, name, func)
{
if (typeof(RGraph.events[obj.uid]) == 'undefined') {
RGraph.events[obj.uid] = [];
}
RGraph.events[obj.uid].push([obj, name, func]);
return RGraph.events[obj.uid].length - 1;
}
/**
* Used to fire one of the RGraph custom events
*
* @param object obj The graph object that fires the event
* @param string event The name of the event to fire
*/
RGraph.FireCustomEvent = function (obj, name)
{
if (obj && obj.isRGraph) {
var uid = obj.uid;
if ( typeof(uid) == 'string'
&& typeof(RGraph.events) == 'object'
&& typeof(RGraph.events[uid]) == 'object'
&& RGraph.events[uid].length > 0) {
for(var j=0; j<RGraph.events[uid].length; ++j) {
if (RGraph.events[uid][j] && RGraph.events[uid][j][1] == name) {
RGraph.events[uid][j][2](obj);
}
}
}
}
}
/**
* This function suggests a gutter size based on the widest left label. Given that the bottom
* labels may be longer, this may be a little out.
*
* @param object obj The graph object
* @param array data An array of graph data
* @return int A suggested gutter setting
*/
RGraph.getGutterSuggest = function (obj, data)
{
/**
* Calculate the minimum value
*/
var min = 0;
for (var i=0; i<data.length; ++i) {
min = Math.min(min, data[i]);
}
var min = Math.abs(min);
var str = RGraph.number_format(obj, RGraph.array_max(RGraph.getScale(Math.max(min, RGraph.array_max(data)), obj)), obj.Get('chart.units.pre'), obj.Get('chart.units.post'));
// Take into account the HBar
if (obj.type == 'hbar') {
var str = '';
var len = 0;
for (var i=0; i<obj.Get('chart.labels').length; ++i) {
str = (obj.Get('chart.labels').length > str.length ? obj.Get('chart.labels')[i] : str);
}
}
obj.context.font = obj.Get('chart.text.size') + 'pt ' + obj.Get('chart.text.font');
len = obj.context.measureText(str).width + 5;
return (obj.type == 'hbar' ? len / 3 : len);
}
/**
* If you prefer, you can use the SetConfig() method to set the configuration information
* for your chart. You may find that setting the configuration this way eases reuse.
*
* @param object obj The graph object
* @param object config The graph configuration information
*/
RGraph.SetConfig = function (obj, c)
{
for (i in c) {
if (typeof(i) == 'string') {
obj.Set(i, c[i]);
}
}
return obj;
}
/**
* Clears all the custom event listeners that have been registered
*
* @param string Limits the clearing to this object ID
*/
RGraph.RemoveAllCustomEventListeners = function ()
{
var id = arguments[0];
if (id && RGraph.events[id]) {
RGraph.events[id] = [];
} else {
RGraph.events = [];
}
}
/**
* Clears a particular custom event listener
*
* @param object obj The graph object
* @param number i This is the index that is return by .AddCustomEventListener()
*/
RGraph.RemoveCustomEventListener = function (obj, i)
{
if ( typeof(RGraph.events) == 'object'
&& typeof(RGraph.events[obj.id]) == 'object'
&& typeof(RGraph.events[obj.id][i]) == 'object') {
RGraph.events[obj.id][i] = null;
}
}
/**
* This draws the background
*
* @param object obj The graph object
*/
RGraph.DrawBackgroundImage = function (obj)
{
if (typeof(obj.Get('chart.background.image')) == 'string') {
if (typeof(obj.canvas.__rgraph_background_image__) == 'undefined') {
var img = new Image();
img.__object__ = obj;
img.__canvas__ = obj.canvas;
img.__context__ = obj.context;
img.src = obj.Get('chart.background.image');
obj.canvas.__rgraph_background_image__ = img;
} else {
img = obj.canvas.__rgraph_background_image__;
}
// When the image has loaded - redraw the canvas
img.onload = function ()
{
RGraph.Clear(obj.canvas);
RGraph.RedrawCanvas(obj.canvas);
}
var gutterLeft = obj.Get('chart.gutter.left');
var gutterRight = obj.Get('chart.gutter.right');
var gutterTop = obj.Get('chart.gutter.top');
var gutterBottom = obj.Get('chart.gutter.bottom');
var stretch = obj.Get('chart.background.image.stretch');
var align = obj.Get('chart.background.image.align');
// Handle chart.background.image.align
if (typeof(align) == 'string') {
if (align.indexOf('right') != -1) {
var x = obj.canvas.width - img.width - gutterRight;
} else {
var x = gutterLeft;
}
if (align.indexOf('bottom') != -1) {
var y = obj.canvas.height - img.height - gutterBottom;
} else {
var y = gutterTop;
}
} else {
var x = gutterLeft;
var y = gutterTop;
}
// X/Y coords take precedence over the align
var x = typeof(obj.Get('chart.background.image.x')) == 'number' ? obj.Get('chart.background.image.x') : x;
var y = typeof(obj.Get('chart.background.image.y')) == 'number' ? obj.Get('chart.background.image.y') : y;
var w = stretch ? obj.canvas.width - gutterLeft - gutterRight : img.width;
var h = stretch ? obj.canvas.height - gutterTop - gutterBottom : img.height;
/**
* You can now specify the width and height of the image
*/
if (typeof(obj.Get('chart.background.image.w')) == 'number') w = obj.Get('chart.background.image.w');
if (typeof(obj.Get('chart.background.image.h')) == 'number') h = obj.Get('chart.background.image.h');
obj.context.drawImage(img,x,y,w, h);
}
}
/**
* This function determines wshether an object has tooltips or not
*
* @param object obj The chart object
*/
RGraph.hasTooltips = function (obj)
{
if (typeof(obj.Get('chart.tooltips')) == 'object' && obj.Get('chart.tooltips')) {
for (var i=0; i<obj.Get('chart.tooltips').length; ++i) {
if (!RGraph.is_null(obj.Get('chart.tooltips')[i])) {
return true;
}
}
} else if (typeof(obj.Get('chart.tooltips')) == 'function') {
return true;
}
return false;
}
/**
* This function creates a (G)UID which can be used to identify objects.
*
* @return string (g)uid The (G)UID
*/
RGraph.CreateUID = function ()
{
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c)
{
var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
return v.toString(16);
});
}
/**
* This is the new object registry, used to facilitate multiple objects per canvas.
*
* @param object obj The object to register
*/
RGraph.ObjectRegistry.Add = function (obj)
{
var uid = obj.uid;
var canvasID = obj.canvas.id;
/**
* Index the objects by UID
*/
RGraph.ObjectRegistry.objects.byUID.push([uid, obj]);
/**
* Index the objects by the canvas that they're drawn on
*/
RGraph.ObjectRegistry.objects.byCanvasID.push([canvasID, obj]);
}
/**
* Remove an object from the object registry
*
* @param object obj The object to remove.
*/
RGraph.ObjectRegistry.Remove = function (obj)
{
var id = obj.id;
var uid = obj.uid;
for (var i=0; i<RGraph.ObjectRegistry.objects.byUID.length; ++i) {
if (RGraph.ObjectRegistry.objects.byUID[i] && RGraph.ObjectRegistry.objects.byUID[i][1].uid == uid) {
RGraph.ObjectRegistry.objects.byUID[i] = null;
}
}
// RGraph.ObjectRegistry.objects.byCanvasID.push([canvasID, obj]);
for (var i=0; i<RGraph.ObjectRegistry.objects.byCanvasID.length; ++i) {
if (RGraph.ObjectRegistry.objects.byCanvasID[i] && RGraph.ObjectRegistry.objects.byCanvasID[i][0] == id) {
RGraph.ObjectRegistry.objects.byCanvasID[i] = null;
}
}
}
/**
* Removes all objects from the ObjectRegistry. If either the ID of a canvas is supplied,
* or the canvas itself, then only objects pertaining to that canvas are cleared.
*
* @param mixed Either a canvas object (as returned by document.getElementById()
* or the ID of a canvas (ie a string)
*/
RGraph.ObjectRegistry.Clear = function ()
{
// If an ID is supplied restrict the learing to that
if (arguments[0]) {
var id = (typeof(arguments[0]) == 'object' ? arguments[0].id : arguments[0]);
var objects = RGraph.ObjectRegistry.getObjectsByCanvasID(id);
for (var i=0; i<objects.length; ++i) {
RGraph.ObjectRegistry.Remove(objects[i]);
}
} else {
RGraph.ObjectRegistry.objects = {};
RGraph.ObjectRegistry.objects.byUID = [];
RGraph.ObjectRegistry.objects.byCanvasID = [];
}
}
/**
* Retrieves all objects for a given canvas id
*
* @patarm id string The canvas ID to get objects for.
*/
RGraph.ObjectRegistry.getObjectsByCanvasID = function (id)
{
var store = RGraph.ObjectRegistry.objects.byCanvasID;
var ret = [];
// Loop through all of the objects and return the appropriate ones
for (var i=0; i<store.length; ++i) {
if (store[i] && store[i][0] == id ) {
ret.push(store[i][1]);
}
}
return ret;
}
/**
* Retrieves the relevant object based on the X/Y position.
*
* @param object e The event object
* @return object The applicable (if any) object
*/
RGraph.ObjectRegistry.getFirstObjectByXY =
RGraph.ObjectRegistry.getObjectByXY = function (e)
{
var canvas = e.target;
var ret = null;
var objects = RGraph.ObjectRegistry.getObjectsByCanvasID(canvas.id);
for (var i=(objects.length - 1); i>=0; --i) {
var obj = objects[i].getObjectByXY(e);
if (obj) {
return obj;
}
}
}
/**
* Retrieves the relevant objects based on the X/Y position.
* NOTE This function returns an array of objects
*
* @param object e The event object
* @return An array of pertinent objects. Note the there may be only one object
*/
RGraph.ObjectRegistry.getObjectsByXY = function (e)
{
var canvas = e.target;
var ret = [];
var objects = RGraph.ObjectRegistry.getObjectsByCanvasID(canvas.id);
for (var i=(objects.length - 1); i>=0; --i) {
var obj = objects[i].getObjectByXY(e);
if (obj) {
ret.push(obj);
}
}
return ret;
}
/**
* Retrieves the object with the corresponding UID
*
* @param string uid The UID to get the relevant object for
*/
RGraph.ObjectRegistry.getObjectByUID = function (uid)
{
var objects = RGraph.ObjectRegistry.objects.byUID;
for (var i=0; i<objects.length; ++i) {
if (objects[i] && objects[i][1].uid == uid) {
return objects[i][1];
}
}
}
/**
* Retrieves the objects that are the given type
*
* @param mixed canvas The canvas to check. It can either be the canvas object itself or just the ID
* @param string type The type to look for
* @return array An array of one or more objects
*/
RGraph.ObjectRegistry.getObjectsByType = function (canvas, type)
{
if (typeof(canvas) == 'string') {
canvas = document.getElementById(canvas);
}
var objects = RGraph.ObjectRegistry.getObjectsByCanvasID(canvas.id);
var ret = [];
for (var i=0; i<objects.length; ++i) {
if (objects[i] && objects[i].type && objects[i].type == type) {
ret.push(objects[i]);
}
}
return ret;
}
/**
* Retrieves the FIRST object that matches the given type
*
* @param mixed canvas The type to look for
* @param string type The type of object to look for
* @return object The FIRST object that matches the given type
*/
RGraph.ObjectRegistry.getFirstObjectByType = function (canvas, type)
{
var objects = RGraph.ObjectRegistry.getObjectsByType(canvas, type);
return objects.length > 0 ? objects[0] : null;
}
/**
* This takes centerx, centery, x and y coordinates and returns the
* appropriate angle relative to the canvas angle system. Remember
* that the canvas angle system starts at the EAST axis
*
* @param number cx The centerx coordinate
* @param number cy The centery coordinate
* @param number x The X coordinate (eg the mouseX if coming from a click)
* @param number y The Y coordinate (eg the mouseY if coming from a click)
* @return number The relevant angle (measured in in RADIANS)
*/
RGraph.getAngleByXY = function (cx, cy, x, y)
{
var angle = Math.atan((y - cy) / (x - cx));
angle = Math.abs(angle)
if (x >= cx && y >= cy) {
angle += TWOPI;
} else if (x >= cx && y < cy) {
angle = (HALFPI - angle) + (PI + HALFPI);
} else if (x < cx && y < cy) {
angle += PI;
} else {
angle = PI - angle;
}
/**
* Upper and lower limit checking
*/
if (angle > TWOPI) {
angle -= TWOPI;
}
return angle;
}
/**
* This function returns the distance between two points. In effect the
* radius of an imaginary circle that is centered on x1 and y1. The name
* of this function is derived from the word "Hypoteneuse", which in
* trigonmetry is the longest side of a triangle
*
* @param number x1 The original X coordinate
* @param number y1 The original Y coordinate
* @param number x2 The target X coordinate
* @param number y2 The target Y coordinate
*/
RGraph.getHypLength = function (x1, y1, x2, y2)
{
var ret = Math.sqrt(((x2 - x1) * (x2 - x1)) + ((y2 - y1) * (y2 - y1)));
return ret;
}
/**
* This installs all of the event listeners
*
* @param object obj The chart object
*/
RGraph.InstallEventListeners = function (obj)
{
/**
* Don't attempt to install event listeners for older versions of MSIE
*/
if (RGraph.isOld()) {
return;
}
/**
* If this function exists, then the dynamic file has been included.
*/
if (RGraph.InstallCanvasClickListener) {
RGraph.InstallWindowMousedownListener(obj);
RGraph.InstallWindowMouseupListener(obj);
RGraph.InstallCanvasMousemoveListener(obj);
RGraph.InstallCanvasMouseupListener(obj);
RGraph.InstallCanvasMousedownListener(obj);
RGraph.InstallCanvasClickListener(obj);
} else if ( RGraph.hasTooltips(obj)
|| obj.Get('chart.adjustable')
|| obj.Get('chart.annotatable')
|| obj.Get('chart.contextmenu')
|| obj.Get('chart.resizable')
|| obj.Get('chart.key.interactive')
|| obj.Get('chart.events.click')
|| obj.Get('chart.events.mousemove')
) {
alert('[RGRAPH] You appear to have used dynamic features but not included the file: RGraph.common.dynamic.js');
}
}
/**
* Loosly mimicks the PHP function print_r();
*/
RGraph.pr = function (obj)
{
var str = '';
var indent = (arguments[2] ? arguments[2] : '');
switch (typeof(obj)) {
case 'number':
if (indent == '') {
str+= 'Number: '
}
str += String(obj);
break;
case 'string':
if (indent == '') {
str+= 'String (' + obj.length + '):'
}
str += '"' + String(obj) + '"';
break;
case 'object':
// In case of null
if (obj == null) {
str += 'null';
break;
}
str += 'Object\n' + indent + '(\n';
for (var i in obj) {
if (typeof(i) == 'string' || typeof(i) == 'number') {
str += indent + ' ' + i + ' => ' + RGraph.pr(obj[i], true, indent + ' ') + '\n';
}
}
var str = str + indent + ')';
break;
case 'function':
str += obj;
break;
case 'boolean':
str += 'Boolean: ' + (obj ? 'true' : 'false');
break;
}
/**
* Finished, now either return if we're in a recursed call, or alert()
* if we're not.
*/
if (arguments[1]) {
return str;
} else {
alert(str);
}
}
/**
* Produces a dashed line
*
* @param
*/
RGraph.DashedLine = function(context, x1, y1, x2, y2)
{
/**
* This is the size of the dashes
*/
var size = 5;
/**
* The optional fifth argument can be the size of the dashes
*/
if (typeof(arguments[5]) == 'number') {
size = arguments[5];
}
var dx = x2 - x1;
var dy = y2 - y1;
var num = Math.floor(Math.sqrt((dx * dx) + (dy * dy)) / size);
var xLen = dx / num;
var yLen = dy / num;
var count = 0;
do {
count % 2 == 0 ? context.lineTo(x1, y1) : context.moveTo(x1, y1);
x1 += xLen;
y1 += yLen;
} while(count++ < num);
}
/**
* Makes an AJAX call. It calls the given callback (a function) when ready
*
* @param string url The URL to retrieve
* @param function callback A function that is called when the response is ready, there's an example below
* called "myCallback".
*/
RGraph.AJAX = function (url, callback)
{
// Mozilla, Safari, ...
if (window.XMLHttpRequest) {
var httpRequest = new XMLHttpRequest();
// MSIE
} else if (window.ActiveXObject) {
var httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
httpRequest.onreadystatechange = function ()
{
if (this.readyState == 4 && this.status == 200) {
this.__user_callback__ = callback;
this.__user_callback__();
}
}
httpRequest.open('GET', url, true);
httpRequest.send();
}
/**
* Rotates the canvas
*
* @param object canvas The canvas to rotate
* @param int x The X coordinate about which to rotate the canvas
* @param int y The Y coordinate about which to rotate the canvas
* @param int angle The angle(in RADIANS) to rotate the canvas by
*/
RGraph.RotateCanvas = function (canvas, x, y, angle)
{
var context = canvas.getContext('2d');
context.translate(x, y);
context.rotate(angle);
context.translate(0 - x, 0 - y);
}
// Some other functions. Because they're rarely changed - they're hand minified
function AA(obj,value){var value=String(value).replace(/^(\d+)\.\d+/,'$1');var newvalue=Number(value)+0.5;return(newvalue-value)>=0?newvalue:Math.floor(value);}
RGraph.LinearGradient=function(obj,x1,y1,x2,y2,color1,color2){var gradient=obj.context.createLinearGradient(x1,y1,x2,y2);gradient.addColorStop(0,color1);gradient.addColorStop(1,color2);return gradient;}
RGraph.RadialGradient=function(obj,x1,y1,r1,x2,y2,r2,color1,color2){var gradient=obj.context.createRadialGradient(x1,y1,r1,x2,y2,r2);gradient.addColorStop(0,color1);gradient.addColorStop(1,color2);return gradient;}
RGraph.array_shift=function(arr){var ret=[];for(var i=1;i<arr.length;++i){ret.push(arr[i]);}return ret;}
RGraph.AddEventListener=function(id,e,func){var type=arguments[3]?arguments[3]:'unknown';RGraph.Registry.Get('chart.event.handlers').push([id,e,func,type]);}
RGraph.ClearEventListeners=function(id){}
RGraph.HidePalette=function(){var div=RGraph.Registry.Get('palette');if(typeof(div)=='object'&&div){div.style.visibility='hidden';div.style.display='none';RGraph.Registry.Set('palette',null);}}
RGraph.random=function(min,max){var dp=arguments[2]?arguments[2]:0;var r=Math.random();return Number((((max - min) * r) + min).toFixed(dp));}
RGraph.NoShadow=function(obj){obj.context.shadowColor='rgba(0,0,0,0)';obj.context.shadowBlur=0;obj.context.shadowOffsetX=0;obj.context.shadowOffsetY=0;}
RGraph.SetShadow=function(obj,color,offsetx,offsety,blur){obj.context.shadowColor=color;obj.context.shadowOffsetX=offsetx;obj.context.shadowOffsetY=offsety;obj.context.shadowBlur=blur;}
RGraph.array_reverse=function(arr){var newarr=[];for(var i=arr.length-1;i>=0;i--){newarr.push(arr[i]);}return newarr;}
RGraph.Registry.Set=function(name,value){RGraph.Registry.store[name]=value;return value;}
RGraph.Registry.Get=function(name){return RGraph.Registry.store[name];}
RGraph.degrees2Radians=function(degrees){return degrees*(PI/180);}
RGraph.is_array=function(obj){return obj!=null&&obj.constructor.toString().indexOf('Array')!=-1;}
RGraph.trim=function(str){return RGraph.ltrim(RGraph.rtrim(str));}
RGraph.ltrim=function(str){return str.replace(/^(\s|\0)+/, '');}
RGraph.rtrim=function(str){return str.replace(/(\s|\0)+$/, '');}
RGraph.GetHeight=function(obj){return obj.canvas.height;}
RGraph.GetWidth=function(obj){return obj.canvas.width;}
RGraph.is_null=function(arg){if(arg==null||(typeof(arg))=='object'&&!arg){return true;}return false;}
RGraph.Timer=function(label){var d=new Date();console.log(label+': '+d.getSeconds()+'.'+d.getMilliseconds());}
RGraph.Async=function(func){return setTimeout(func,arguments[1]?arguments[1]:1);}
RGraph.isIE7=function(){return navigator.userAgent.indexOf('MSIE 7')>0;}
RGraph.isIE8=function(){return navigator.userAgent.indexOf('MSIE 8')>0;}
RGraph.isIE9=function(){return navigator.userAgent.indexOf('MSIE 9')>0;}
RGraph.isIE9up=function(){navigator.userAgent.match(/MSIE (\d+)/);return Number(RegExp.$1)>=9;}
RGraph.isOld=function(){return RGraph.isIE7()||RGraph.isIE8();}
RGraph.Reset=function(canvas){canvas.width=canvas.width;}
function pd(variable){RGraph.pr(variable);}
function p(variable){RGraph.pr(variable);}
function a(variable){alert(variable);}
function cl(variable){return console.log(variable);}
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