egroupware_official/phpgwapi/js/jquery/jqplot/plugins/jqplot.barRenderer.js
2011-08-09 23:10:50 +00:00

709 lines
30 KiB
JavaScript

/**
* jqPlot
* Pure JavaScript plotting plugin using jQuery
*
* Version: 1.0.0b2_r792
*
* Copyright (c) 2009-2011 Chris Leonello
* jqPlot is currently available for use in all personal or commercial projects
* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
* choose the license that best suits your project and use it accordingly.
*
* Although not required, the author would appreciate an email letting him
* know of any substantial use of jqPlot. You can reach the author at:
* chris at jqplot dot com or see http://www.jqplot.com/info.php .
*
* If you are feeling kind and generous, consider supporting the project by
* making a donation at: http://www.jqplot.com/donate.php .
*
* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
*
* version 2007.04.27
* author Ash Searle
* http://hexmen.com/blog/2007/03/printf-sprintf/
* http://hexmen.com/js/sprintf.js
* The author (Ash Searle) has placed this code in the public domain:
* "This code is unrestricted: you are free to use it however you like."
*
*/
(function($) {
// Class: $.jqplot.BarRenderer
// A plugin renderer for jqPlot to draw a bar plot.
// Draws series as a line.
$.jqplot.BarRenderer = function(){
$.jqplot.LineRenderer.call(this);
};
$.jqplot.BarRenderer.prototype = new $.jqplot.LineRenderer();
$.jqplot.BarRenderer.prototype.constructor = $.jqplot.BarRenderer;
// called with scope of series.
$.jqplot.BarRenderer.prototype.init = function(options, plot) {
// Group: Properties
//
// prop: barPadding
// Number of pixels between adjacent bars at the same axis value.
this.barPadding = 8;
// prop: barMargin
// Number of pixels between groups of bars at adjacent axis values.
this.barMargin = 10;
// prop: barDirection
// 'vertical' = up and down bars, 'horizontal' = side to side bars
this.barDirection = 'vertical';
// prop: barWidth
// Width of the bar in pixels (auto by devaul). null = calculated automatically.
this.barWidth = null;
// prop: shadowOffset
// offset of the shadow from the slice and offset of
// each succesive stroke of the shadow from the last.
this.shadowOffset = 2;
// prop: shadowDepth
// number of strokes to apply to the shadow,
// each stroke offset shadowOffset from the last.
this.shadowDepth = 5;
// prop: shadowAlpha
// transparency of the shadow (0 = transparent, 1 = opaque)
this.shadowAlpha = 0.08;
// prop: waterfall
// true to enable waterfall plot.
this.waterfall = false;
// prop: groups
// group bars into this many groups
this.groups = 1;
// prop: varyBarColor
// true to color each bar of a series separately rather than
// have every bar of a given series the same color.
// If used for non-stacked multiple series bar plots, user should
// specify a separate 'seriesColors' array for each series.
// Otherwise, each series will set their bars to the same color array.
// This option has no Effect for stacked bar charts and is disabled.
this.varyBarColor = false;
// prop: highlightMouseOver
// True to highlight slice when moused over.
// This must be false to enable highlightMouseDown to highlight when clicking on a slice.
this.highlightMouseOver = true;
// prop: highlightMouseDown
// True to highlight when a mouse button is pressed over a slice.
// This will be disabled if highlightMouseOver is true.
this.highlightMouseDown = false;
// prop: highlightColors
// an array of colors to use when highlighting a bar.
this.highlightColors = [];
this._type = 'bar';
// if user has passed in highlightMouseDown option and not set highlightMouseOver, disable highlightMouseOver
if (options.highlightMouseDown && options.highlightMouseOver == null) {
options.highlightMouseOver = false;
}
$.extend(true, this, options);
// fill is still needed to properly draw the legend.
// bars have to be filled.
this.fill = true;
if (this.waterfall) {
this.fillToZero = false;
this.disableStack = true;
}
if (this.barDirection == 'vertical' ) {
this._primaryAxis = '_xaxis';
this._stackAxis = 'y';
this.fillAxis = 'y';
}
else {
this._primaryAxis = '_yaxis';
this._stackAxis = 'x';
this.fillAxis = 'x';
}
// index of the currenty highlighted point, if any
this._highlightedPoint = null;
// total number of values for all bar series, total number of bar series, and position of this series
this._plotSeriesInfo = null;
// Array of actual data colors used for each data point.
this._dataColors = [];
this._barPoints = [];
// set the shape renderer options
var opts = {lineJoin:'miter', lineCap:'round', fill:true, isarc:false, strokeStyle:this.color, fillStyle:this.color, closePath:this.fill};
this.renderer.shapeRenderer.init(opts);
// set the shadow renderer options
var sopts = {lineJoin:'miter', lineCap:'round', fill:true, isarc:false, angle:this.shadowAngle, offset:this.shadowOffset, alpha:this.shadowAlpha, depth:this.shadowDepth, closePath:this.fill};
this.renderer.shadowRenderer.init(sopts);
plot.postInitHooks.addOnce(postInit);
plot.postDrawHooks.addOnce(postPlotDraw);
plot.eventListenerHooks.addOnce('jqplotMouseMove', handleMove);
plot.eventListenerHooks.addOnce('jqplotMouseDown', handleMouseDown);
plot.eventListenerHooks.addOnce('jqplotMouseUp', handleMouseUp);
plot.eventListenerHooks.addOnce('jqplotClick', handleClick);
plot.eventListenerHooks.addOnce('jqplotRightClick', handleRightClick);
};
// called with scope of series
function barPreInit(target, data, seriesDefaults, options) {
if (this.rendererOptions.barDirection == 'horizontal') {
this._stackAxis = 'x';
this._primaryAxis = '_yaxis';
}
if (this.rendererOptions.waterfall == true) {
this._data = $.extend(true, [], this.data);
var sum = 0;
var pos = (!this.rendererOptions.barDirection || this.rendererOptions.barDirection == 'vertical') ? 1 : 0;
for(var i=0; i<this.data.length; i++) {
sum += this.data[i][pos];
if (i>0) {
this.data[i][pos] += this.data[i-1][pos];
}
}
this.data[this.data.length] = (pos == 1) ? [this.data.length+1, sum] : [sum, this.data.length+1];
this._data[this._data.length] = (pos == 1) ? [this._data.length+1, sum] : [sum, this._data.length+1];
}
if (this.rendererOptions.groups > 1) {
this.breakOnNull = true;
var l = this.data.length;
var skip = parseInt(l/this.rendererOptions.groups, 10);
var count = 0;
for (var i=skip; i<l; i+=skip) {
this.data.splice(i+count, 0, [null, null]);
count++;
}
for (i=0; i<this.data.length; i++) {
if (this._primaryAxis == '_xaxis') {
this.data[i][0] = i+1;
}
else {
this.data[i][1] = i+1;
}
}
}
}
$.jqplot.preSeriesInitHooks.push(barPreInit);
// needs to be called with scope of series, not renderer.
$.jqplot.BarRenderer.prototype.calcSeriesNumbers = function() {
var nvals = 0;
var nseries = 0;
var paxis = this[this._primaryAxis];
var s, series, pos;
// loop through all series on this axis
for (var i=0; i < paxis._series.length; i++) {
series = paxis._series[i];
if (series === this) {
pos = i;
}
// is the series rendered as a bar?
if (series.renderer.constructor == $.jqplot.BarRenderer) {
// gridData may not be computed yet, use data length insted
nvals += series.data.length;
nseries += 1;
}
}
// return total number of values for all bar series, total number of bar series, and position of this series
return [nvals, nseries, pos];
};
$.jqplot.BarRenderer.prototype.setBarWidth = function() {
// need to know how many data values we have on the approprate axis and figure it out.
var i;
var nvals = 0;
var nseries = 0;
var paxis = this[this._primaryAxis];
var s, series, pos;
var temp = this._plotSeriesInfo = this.renderer.calcSeriesNumbers.call(this);
nvals = temp[0];
nseries = temp[1];
var nticks = paxis.numberTicks;
var nbins = (nticks-1)/2;
// so, now we have total number of axis values.
if (paxis.name == 'xaxis' || paxis.name == 'x2axis') {
if (this._stack) {
this.barWidth = (paxis._offsets.max - paxis._offsets.min) / nvals * nseries - this.barMargin;
}
else {
this.barWidth = ((paxis._offsets.max - paxis._offsets.min)/nbins - this.barPadding * (nseries-1) - this.barMargin*2)/nseries;
// this.barWidth = (paxis._offsets.max - paxis._offsets.min) / nvals - this.barPadding - this.barMargin/nseries;
}
}
else {
if (this._stack) {
this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals * nseries - this.barMargin;
}
else {
this.barWidth = ((paxis._offsets.min - paxis._offsets.max)/nbins - this.barPadding * (nseries-1) - this.barMargin*2)/nseries;
// this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals - this.barPadding - this.barMargin/nseries;
}
}
return [nvals, nseries];
};
function computeHighlightColors (colors) {
var ret = [];
for (var i=0; i<colors.length; i++){
var rgba = $.jqplot.getColorComponents(colors[i]);
var newrgb = [rgba[0], rgba[1], rgba[2]];
var sum = newrgb[0] + newrgb[1] + newrgb[2];
for (var j=0; j<3; j++) {
// when darkening, lowest color component can be is 60.
newrgb[j] = (sum > 570) ? newrgb[j] * 0.8 : newrgb[j] + 0.3 * (255 - newrgb[j]);
newrgb[j] = parseInt(newrgb[j], 10);
}
ret.push('rgb('+newrgb[0]+','+newrgb[1]+','+newrgb[2]+')');
}
return ret;
}
$.jqplot.BarRenderer.prototype.draw = function(ctx, gridData, options) {
var i;
// Ughhh, have to make a copy of options b/c it may be modified later.
var opts = $.extend({}, options);
var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;
var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine;
var fill = (opts.fill != undefined) ? opts.fill : this.fill;
var xaxis = this.xaxis;
var yaxis = this.yaxis;
var xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
var pointx, pointy;
// clear out data colors.
this._dataColors = [];
this._barPoints = [];
if (this.barWidth == null) {
this.renderer.setBarWidth.call(this);
}
var temp = this._plotSeriesInfo = this.renderer.calcSeriesNumbers.call(this);
var nvals = temp[0];
var nseries = temp[1];
var pos = temp[2];
var points = [];
if (this._stack) {
this._barNudge = 0;
}
else {
this._barNudge = (-Math.abs(nseries/2 - 0.5) + pos) * (this.barWidth + this.barPadding);
}
if (showLine) {
var negativeColors = new $.jqplot.ColorGenerator(this.negativeSeriesColors);
var positiveColors = new $.jqplot.ColorGenerator(this.seriesColors);
var negativeColor = negativeColors.get(this.index);
if (! this.useNegativeColors) {
negativeColor = opts.fillStyle;
}
var positiveColor = opts.fillStyle;
var base;
var xstart;
var ystart;
if (this.barDirection == 'vertical') {
for (var i=0; i<gridData.length; i++) {
if (this.data[i][1] == null) {
continue;
}
points = [];
base = gridData[i][0] + this._barNudge;
ystart;
// stacked
if (this._stack && this._prevGridData.length) {
ystart = this._prevGridData[i][1];
}
// not stacked and first series in stack
else {
if (this.fillToZero) {
ystart = this._yaxis.series_u2p(0);
}
else if (this.waterfall && i > 0 && i < this.gridData.length-1) {
ystart = this.gridData[i-1][1];
}
else if (this.waterfall && i == 0 && i < this.gridData.length-1) {
if (this._yaxis.min <= 0 && this._yaxis.max >= 0) {
ystart = this._yaxis.series_u2p(0);
}
else if (this._yaxis.min > 0) {
ystart = ctx.canvas.height;
}
else {
ystart = 0;
}
}
else if (this.waterfall && i == this.gridData.length - 1) {
if (this._yaxis.min <= 0 && this._yaxis.max >= 0) {
ystart = this._yaxis.series_u2p(0);
}
else if (this._yaxis.min > 0) {
ystart = ctx.canvas.height;
}
else {
ystart = 0;
}
}
else {
ystart = ctx.canvas.height;
}
}
if ((this.fillToZero && this._plotData[i][1] < 0) || (this.waterfall && this._data[i][1] < 0)) {
if (this.varyBarColor && !this._stack) {
if (this.useNegativeColors) {
opts.fillStyle = negativeColors.next();
}
else {
opts.fillStyle = positiveColors.next();
}
}
else {
opts.fillStyle = negativeColor;
}
}
else {
if (this.varyBarColor && !this._stack) {
opts.fillStyle = positiveColors.next();
}
else {
opts.fillStyle = positiveColor;
}
}
if (!this.fillToZero || this._plotData[i][1] >= 0) {
points.push([base-this.barWidth/2, ystart]);
points.push([base-this.barWidth/2, gridData[i][1]]);
points.push([base+this.barWidth/2, gridData[i][1]]);
points.push([base+this.barWidth/2, ystart]);
}
// for negative bars make sure points are always ordered clockwise
else {
points.push([base-this.barWidth/2, gridData[i][1]]);
points.push([base-this.barWidth/2, ystart]);
points.push([base+this.barWidth/2, ystart]);
points.push([base+this.barWidth/2, gridData[i][1]]);
}
this._barPoints.push(points);
// now draw the shadows if not stacked.
// for stacked plots, they are predrawn by drawShadow
if (shadow && !this._stack) {
var sopts = $.extend(true, {}, opts);
// need to get rid of fillStyle on shadow.
delete sopts.fillStyle;
this.renderer.shadowRenderer.draw(ctx, points, sopts);
}
var clr = opts.fillStyle || this.color;
this._dataColors.push(clr);
this.renderer.shapeRenderer.draw(ctx, points, opts);
}
}
else if (this.barDirection == 'horizontal'){
for (var i=0; i<gridData.length; i++) {
if (this.data[i][0] == null) {
continue;
}
points = [];
base = gridData[i][1] - this._barNudge;
xstart;
if (this._stack && this._prevGridData.length) {
xstart = this._prevGridData[i][0];
}
// not stacked and first series in stack
else {
if (this.fillToZero) {
xstart = this._xaxis.series_u2p(0);
}
else if (this.waterfall && i > 0 && i < this.gridData.length-1) {
xstart = this.gridData[i-1][1];
}
else if (this.waterfall && i == 0 && i < this.gridData.length-1) {
if (this._xaxis.min <= 0 && this._xaxis.max >= 0) {
xstart = this._xaxis.series_u2p(0);
}
else if (this._xaxis.min > 0) {
xstart = 0;
}
else {
xstart = ctx.canvas.width;
}
}
else if (this.waterfall && i == this.gridData.length - 1) {
if (this._xaxis.min <= 0 && this._xaxis.max >= 0) {
xstart = this._xaxis.series_u2p(0);
}
else if (this._xaxis.min > 0) {
xstart = 0;
}
else {
xstart = ctx.canvas.width;
}
}
else {
xstart = 0;
}
}
if ((this.fillToZero && this._plotData[i][1] < 0) || (this.waterfall && this._data[i][1] < 0)) {
if (this.varyBarColor && !this._stack) {
if (this.useNegativeColors) {
opts.fillStyle = negativeColors.next();
}
else {
opts.fillStyle = positiveColors.next();
}
}
}
else {
if (this.varyBarColor && !this._stack) {
opts.fillStyle = positiveColors.next();
}
else {
opts.fillStyle = positiveColor;
}
}
points.push([xstart, base+this.barWidth/2]);
points.push([xstart, base-this.barWidth/2]);
points.push([gridData[i][0], base-this.barWidth/2]);
points.push([gridData[i][0], base+this.barWidth/2]);
this._barPoints.push(points);
// now draw the shadows if not stacked.
// for stacked plots, they are predrawn by drawShadow
if (shadow && !this._stack) {
var sopts = $.extend(true, {}, opts);
delete sopts.fillStyle;
this.renderer.shadowRenderer.draw(ctx, points, sopts);
}
var clr = opts.fillStyle || this.color;
this._dataColors.push(clr);
this.renderer.shapeRenderer.draw(ctx, points, opts);
}
}
}
if (this.highlightColors.length == 0) {
this.highlightColors = computeHighlightColors(this._dataColors);
}
else if (typeof(this.highlightColors) == 'string') {
var temp = this.highlightColors;
this.highlightColors = [];
for (var i=0; i<this._dataColors.length; i++) {
this.highlightColors.push(temp);
}
}
};
// for stacked plots, shadows will be pre drawn by drawShadow.
$.jqplot.BarRenderer.prototype.drawShadow = function(ctx, gridData, options) {
var i;
var opts = (options != undefined) ? options : {};
var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow;
var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine;
var fill = (opts.fill != undefined) ? opts.fill : this.fill;
var xaxis = this.xaxis;
var yaxis = this.yaxis;
var xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
var pointx, points, pointy, nvals, nseries, pos;
if (this._stack && this.shadow) {
if (this.barWidth == null) {
this.renderer.setBarWidth.call(this);
}
var temp = this._plotSeriesInfo = this.renderer.calcSeriesNumbers.call(this);
nvals = temp[0];
nseries = temp[1];
pos = temp[2];
if (this._stack) {
this._barNudge = 0;
}
else {
this._barNudge = (-Math.abs(nseries/2 - 0.5) + pos) * (this.barWidth + this.barPadding);
}
if (showLine) {
if (this.barDirection == 'vertical') {
for (var i=0; i<gridData.length; i++) {
if (this.data[i][1] == null) {
continue;
}
points = [];
var base = gridData[i][0] + this._barNudge;
var ystart;
if (this._stack && this._prevGridData.length) {
ystart = this._prevGridData[i][1];
}
else {
if (this.fillToZero) {
ystart = this._yaxis.series_u2p(0);
}
else {
ystart = ctx.canvas.height;
}
}
points.push([base-this.barWidth/2, ystart]);
points.push([base-this.barWidth/2, gridData[i][1]]);
points.push([base+this.barWidth/2, gridData[i][1]]);
points.push([base+this.barWidth/2, ystart]);
this.renderer.shadowRenderer.draw(ctx, points, opts);
}
}
else if (this.barDirection == 'horizontal'){
for (var i=0; i<gridData.length; i++) {
if (this.data[i][0] == null) {
continue;
}
points = [];
var base = gridData[i][1] - this._barNudge;
var xstart;
if (this._stack && this._prevGridData.length) {
xstart = this._prevGridData[i][0];
}
else {
xstart = 0;
}
points.push([xstart, base+this.barWidth/2]);
points.push([gridData[i][0], base+this.barWidth/2]);
points.push([gridData[i][0], base-this.barWidth/2]);
points.push([xstart, base-this.barWidth/2]);
this.renderer.shadowRenderer.draw(ctx, points, opts);
}
}
}
}
};
function postInit(target, data, options) {
for (var i=0; i<this.series.length; i++) {
if (this.series[i].renderer.constructor == $.jqplot.BarRenderer) {
// don't allow mouseover and mousedown at same time.
if (this.series[i].highlightMouseOver) {
this.series[i].highlightMouseDown = false;
}
}
}
this.target.bind('mouseout', {plot:this}, function (ev) { unhighlight(ev.data.plot); });
}
// called within context of plot
// create a canvas which we can draw on.
// insert it before the eventCanvas, so eventCanvas will still capture events.
function postPlotDraw() {
// Memory Leaks patch
if (this.plugins.barRenderer && this.plugins.barRenderer.highlightCanvas) {
this.plugins.barRenderer.highlightCanvas.resetCanvas();
this.plugins.barRenderer.highlightCanvas = null;
}
this.plugins.barRenderer = {highlightedSeriesIndex:null};
this.plugins.barRenderer.highlightCanvas = new $.jqplot.GenericCanvas();
this.eventCanvas._elem.before(this.plugins.barRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-barRenderer-highlight-canvas', this._plotDimensions, this));
this.plugins.barRenderer.highlightCanvas.setContext();
}
function highlight (plot, sidx, pidx, points) {
var s = plot.series[sidx];
var canvas = plot.plugins.barRenderer.highlightCanvas;
canvas._ctx.clearRect(0,0,canvas._ctx.canvas.width, canvas._ctx.canvas.height);
s._highlightedPoint = pidx;
plot.plugins.barRenderer.highlightedSeriesIndex = sidx;
var opts = {fillStyle: s.highlightColors[pidx]};
s.renderer.shapeRenderer.draw(canvas._ctx, points, opts);
canvas = null;
}
function unhighlight (plot) {
var canvas = plot.plugins.barRenderer.highlightCanvas;
canvas._ctx.clearRect(0,0, canvas._ctx.canvas.width, canvas._ctx.canvas.height);
for (var i=0; i<plot.series.length; i++) {
plot.series[i]._highlightedPoint = null;
}
plot.plugins.barRenderer.highlightedSeriesIndex = null;
plot.target.trigger('jqplotDataUnhighlight');
canvas = null;
}
function handleMove(ev, gridpos, datapos, neighbor, plot) {
if (neighbor) {
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
var evt1 = jQuery.Event('jqplotDataMouseOver');
evt1.pageX = ev.pageX;
evt1.pageY = ev.pageY;
plot.target.trigger(evt1, ins);
if (plot.series[ins[0]].highlightMouseOver && !(ins[0] == plot.plugins.barRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
var evt = jQuery.Event('jqplotDataHighlight');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
plot.target.trigger(evt, ins);
highlight (plot, neighbor.seriesIndex, neighbor.pointIndex, neighbor.points);
}
}
else if (neighbor == null) {
unhighlight (plot);
}
}
function handleMouseDown(ev, gridpos, datapos, neighbor, plot) {
if (neighbor) {
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
if (plot.series[ins[0]].highlightMouseDown && !(ins[0] == plot.plugins.barRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
var evt = jQuery.Event('jqplotDataHighlight');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
plot.target.trigger(evt, ins);
highlight (plot, neighbor.seriesIndex, neighbor.pointIndex, neighbor.points);
}
}
else if (neighbor == null) {
unhighlight (plot);
}
}
function handleMouseUp(ev, gridpos, datapos, neighbor, plot) {
var idx = plot.plugins.barRenderer.highlightedSeriesIndex;
if (idx != null && plot.series[idx].highlightMouseDown) {
unhighlight(plot);
}
}
function handleClick(ev, gridpos, datapos, neighbor, plot) {
if (neighbor) {
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
var evt = jQuery.Event('jqplotDataClick');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
plot.target.trigger(evt, ins);
}
}
function handleRightClick(ev, gridpos, datapos, neighbor, plot) {
if (neighbor) {
var ins = [neighbor.seriesIndex, neighbor.pointIndex, neighbor.data];
var idx = plot.plugins.barRenderer.highlightedSeriesIndex;
if (idx != null && plot.series[idx].highlightMouseDown) {
unhighlight(plot);
}
var evt = jQuery.Event('jqplotDataRightClick');
evt.pageX = ev.pageX;
evt.pageY = ev.pageY;
plot.target.trigger(evt, ins);
}
}
})(jQuery);