assets/javascripts/jquery/jquery.jqplot/plugins/jqplot.pyramidRenderer.js
/**
* jqPlot
* Pure JavaScript plotting plugin using jQuery
*
* Version: 1.0.0
* Revision: 1095
*
* 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($) {
// Need to ensure pyramid axis and grid renderers are loaded.
// You should load these with script tags in the html head, that is more efficient
// as the browser will cache the request.
// Note, have to block with synchronous request in order to execute bar renderer code.
if ($.jqplot.PyramidAxisRenderer === undefined) {
$.ajax({
url: $.jqplot.pluginLocation + 'jqplot.pyramidAxisRenderer.js',
dataType: "script",
async: false
});
}
if ($.jqplot.PyramidGridRenderer === undefined) {
$.ajax({
url: $.jqplot.pluginLocation + 'jqplot.pyramidGridRenderer.js',
dataType: "script",
async: false
});
}
$.jqplot.PyramidRenderer = function(){
$.jqplot.LineRenderer.call(this);
};
$.jqplot.PyramidRenderer.prototype = new $.jqplot.LineRenderer();
$.jqplot.PyramidRenderer.prototype.constructor = $.jqplot.PyramidRenderer;
// called with scope of a series
$.jqplot.PyramidRenderer.prototype.init = function(options, plot) {
options = options || {};
this._type = 'pyramid';
// Group: Properties
//
// prop: barPadding
this.barPadding = 10;
this.barWidth = null;
// prop: fill
// True to fill the bars.
this.fill = true;
// 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 slice.
this.highlightColors = [];
// prop highlightThreshold
// Expand the highlightable region in the x direction.
// E.g. a value of 3 will highlight a bar when the mouse is
// within 3 pixels of the bar in the x direction.
this.highlightThreshold = 2;
// prop: synchronizeHighlight
// Index of another series to highlight when this series is highlighted.
// null or false to not synchronize.
this.synchronizeHighlight = false;
// prop: offsetBars
// False will center bars on their y value.
// True will push bars up by 1/2 bar width to fill between their y values.
// If true, there needs to be 1 more tick than there are bars.
this.offsetBars = false;
// if user has passed in highlightMouseDown option and not set highlightMouseOver, disable highlightMouseOver
if (options.highlightMouseDown && options.highlightMouseOver == null) {
options.highlightMouseOver = false;
}
this.side = 'right';
$.extend(true, this, options);
// if (this.fill === false) {
// this.shadow = false;
// }
if (this.side === 'left') {
this._highlightThreshold = [[-this.highlightThreshold, 0], [-this.highlightThreshold, 0], [0,0], [0,0]];
}
else {
this._highlightThreshold = [[0,0], [0,0], [this.highlightThreshold, 0], [this.highlightThreshold, 0]];
}
this.renderer.options = options;
// index of the currenty highlighted point, if any
this._highlightedPoint = null;
// Array of actual data colors used for each data point.
this._dataColors = [];
this._barPoints = [];
this.fillAxis = 'y';
this._primaryAxis = '_yaxis';
this._xnudge = 0;
// set the shape renderer options
var opts = {lineJoin:'miter', lineCap:'butt', fill:this.fill, fillRect:this.fill, isarc:false, strokeStyle:this.color, fillStyle:this.color, closePath:this.fill, lineWidth: this.lineWidth};
this.renderer.shapeRenderer.init(opts);
// set the shadow renderer options
var shadow_offset = options.shadowOffset;
// set the shadow renderer options
if (shadow_offset == null) {
// scale the shadowOffset to the width of the line.
if (this.lineWidth > 2.5) {
shadow_offset = 1.25 * (1 + (Math.atan((this.lineWidth/2.5))/0.785398163 - 1)*0.6);
// var shadow_offset = this.shadowOffset;
}
// for skinny lines, don't make such a big shadow.
else {
shadow_offset = 1.25 * Math.atan((this.lineWidth/2.5))/0.785398163;
}
}
var sopts = {lineJoin:'miter', lineCap:'butt', fill:this.fill, fillRect:this.fill, isarc:false, angle:this.shadowAngle, offset:shadow_offset, alpha:this.shadowAlpha, depth:this.shadowDepth, closePath:this.fill, lineWidth: this.lineWidth};
this.renderer.shadowRenderer.init(sopts);
plot.postDrawHooks.addOnce(postPlotDraw);
plot.eventListenerHooks.addOnce('jqplotMouseMove', handleMove);
// if this is the left side of pyramid, set y values to negative.
if (this.side === 'left') {
for (var i=0, l=this.data.length; i<l; i++) {
this.data[i][1] = -Math.abs(this.data[i][1]);
}
}
};
// setGridData
// converts the user data values to grid coordinates and stores them
// in the gridData array.
// Called with scope of a series.
$.jqplot.PyramidRenderer.prototype.setGridData = function(plot) {
// recalculate the grid data
var xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
var data = this._plotData;
var pdata = this._prevPlotData;
this.gridData = [];
this._prevGridData = [];
var l = data.length;
var adjust = false;
var i;
// if any data values are < 0, consider this a negative series
for (i = 0; i < l; i++) {
if (data[i][1] < 0) {
this.side = 'left';
}
}
if (this._yaxis.name === 'yMidAxis' && this.side === 'right') {
this._xnudge = this._xaxis.max/2000.0;
adjust = true;
}
for (i = 0; i < l; i++) {
// if not a line series or if no nulls in data, push the converted point onto the array.
if (data[i][0] != null && data[i][1] != null) {
this.gridData.push([xp(data[i][1]), yp(data[i][0])]);
}
// else if there is a null, preserve it.
else if (data[i][0] == null) {
this.gridData.push([xp(data[i][1]), null]);
}
else if (data[i][1] == null) {
this.gridData.push(null, [yp(data[i][0])]);
}
// finally, adjust x grid data if have to
if (data[i][1] === 0 && adjust) {
this.gridData[i][0] = xp(this._xnudge);
}
}
};
// makeGridData
// converts any arbitrary data values to grid coordinates and
// returns them. This method exists so that plugins can use a series'
// linerenderer to generate grid data points without overwriting the
// grid data associated with that series.
// Called with scope of a series.
$.jqplot.PyramidRenderer.prototype.makeGridData = function(data, plot) {
// recalculate the grid data
var xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
var gd = [];
var l = data.length;
var adjust = false;
var i;
// if any data values are < 0, consider this a negative series
for (i = 0; i < l; i++) {
if (data[i][1] < 0) {
this.side = 'left';
}
}
if (this._yaxis.name === 'yMidAxis' && this.side === 'right') {
this._xnudge = this._xaxis.max/2000.0;
adjust = true;
}
for (i = 0; i < l; i++) {
// if not a line series or if no nulls in data, push the converted point onto the array.
if (data[i][0] != null && data[i][1] != null) {
gd.push([xp(data[i][1]), yp(data[i][0])]);
}
// else if there is a null, preserve it.
else if (data[i][0] == null) {
gd.push([xp(data[i][1]), null]);
}
else if (data[i][1] == null) {
gd.push([null, yp(data[i][0])]);
}
// finally, adjust x grid data if have to
if (data[i][1] === 0 && adjust) {
gd[i][0] = xp(this._xnudge);
}
}
return gd;
};
$.jqplot.PyramidRenderer.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;
nvals = paxis.max - paxis.min;
var nticks = paxis.numberTicks;
var nbins = (nticks-1)/2;
// so, now we have total number of axis values.
var temp = (this.barPadding === 0) ? 1.0 : 0;
if (paxis.name == 'xaxis' || paxis.name == 'x2axis') {
this.barWidth = (paxis._offsets.max - paxis._offsets.min) / nvals - this.barPadding + temp;
}
else {
if (this.fill) {
this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals - this.barPadding + temp;
}
else {
this.barWidth = (paxis._offsets.min - paxis._offsets.max) / nvals;
}
}
};
$.jqplot.PyramidRenderer.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 xp = this._xaxis.series_u2p;
var yp = this._yaxis.series_u2p;
var pointx, pointy;
// clear out data colors.
this._dataColors = [];
this._barPoints = [];
if (this.renderer.options.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 = [],
w,
h;
// this._barNudge = 0;
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 = this._xaxis.series_u2p(this._xnudge);
var ystart = this._yaxis.series_u2p(this._yaxis.min);
var yend = this._yaxis.series_u2p(this._yaxis.max);
var bw = this.barWidth;
var bw2 = bw/2.0;
var points = [];
var yadj = this.offsetBars ? bw2 : 0;
for (var i=0, l=gridData.length; i<l; i++) {
if (this.data[i][0] == null) {
continue;
}
base = gridData[i][1];
// not stacked and first series in stack
if (this._plotData[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;
}
}
if (this.fill) {
if (this._plotData[i][1] >= 0) {
// xstart = this._xaxis.series_u2p(this._xnudge);
w = gridData[i][0] - xstart;
h = this.barWidth;
points = [xstart, base - bw2 - yadj, w, h];
}
else {
// xstart = this._xaxis.series_u2p(0);
w = xstart - gridData[i][0];
h = this.barWidth;
points = [gridData[i][0], base - bw2 - yadj, w, h];
}
this._barPoints.push([[points[0], points[1] + h], [points[0], points[1]], [points[0] + w, points[1]], [points[0] + w, points[1] + h]]);
if (shadow) {
this.renderer.shadowRenderer.draw(ctx, points);
}
var clr = opts.fillStyle || this.color;
this._dataColors.push(clr);
this.renderer.shapeRenderer.draw(ctx, points, opts);
}
else {
if (i === 0) {
points =[[xstart, ystart], [gridData[i][0], ystart], [gridData[i][0], gridData[i][1] - bw2 - yadj]];
}
else if (i < l-1) {
points = points.concat([[gridData[i-1][0], gridData[i-1][1] - bw2 - yadj], [gridData[i][0], gridData[i][1] + bw2 - yadj], [gridData[i][0], gridData[i][1] - bw2 - yadj]]);
}
// finally, draw the line
else {
points = points.concat([[gridData[i-1][0], gridData[i-1][1] - bw2 - yadj], [gridData[i][0], gridData[i][1] + bw2 - yadj], [gridData[i][0], yend], [xstart, yend]]);
if (shadow) {
this.renderer.shadowRenderer.draw(ctx, points);
}
var clr = opts.fillStyle || this.color;
this._dataColors.push(clr);
this.renderer.shapeRenderer.draw(ctx, points, opts);
}
}
}
}
if (this.highlightColors.length == 0) {
this.highlightColors = $.jqplot.computeHighlightColors(this._dataColors);
}
else if (typeof(this.highlightColors) == 'string') {
this.highlightColors = [];
for (var i=0; i<this._dataColors.length; i++) {
this.highlightColors.push(this.highlightColors);
}
}
};
// setup default renderers for axes and legend so user doesn't have to
// called with scope of plot
function preInit(target, data, options) {
options = options || {};
options.axesDefaults = options.axesDefaults || {};
options.grid = options.grid || {};
options.legend = options.legend || {};
options.seriesDefaults = options.seriesDefaults || {};
// only set these if there is a pie series
var setopts = false;
if (options.seriesDefaults.renderer === $.jqplot.PyramidRenderer) {
setopts = true;
}
else if (options.series) {
for (var i=0; i < options.series.length; i++) {
if (options.series[i].renderer === $.jqplot.PyramidRenderer) {
setopts = true;
}
}
}
if (setopts) {
options.axesDefaults.renderer = $.jqplot.PyramidAxisRenderer;
options.grid.renderer = $.jqplot.PyramidGridRenderer;
options.seriesDefaults.pointLabels = {show: false};
}
}
// 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.pyramidRenderer && this.plugins.pyramidRenderer.highlightCanvas) {
this.plugins.pyramidRenderer.highlightCanvas.resetCanvas();
this.plugins.pyramidRenderer.highlightCanvas = null;
}
this.plugins.pyramidRenderer = {highlightedSeriesIndex:null};
this.plugins.pyramidRenderer.highlightCanvas = new $.jqplot.GenericCanvas();
this.eventCanvas._elem.before(this.plugins.pyramidRenderer.highlightCanvas.createElement(this._gridPadding, 'jqplot-pyramidRenderer-highlight-canvas', this._plotDimensions, this));
this.plugins.pyramidRenderer.highlightCanvas.setContext();
this.eventCanvas._elem.bind('mouseleave', {plot:this}, function (ev) { unhighlight(ev.data.plot); });
}
function highlight (plot, sidx, pidx, points) {
var s = plot.series[sidx];
var canvas = plot.plugins.pyramidRenderer.highlightCanvas;
canvas._ctx.clearRect(0,0,canvas._ctx.canvas.width, canvas._ctx.canvas.height);
s._highlightedPoint = pidx;
plot.plugins.pyramidRenderer.highlightedSeriesIndex = sidx;
var opts = {fillStyle: s.highlightColors[pidx], fillRect: false};
s.renderer.shapeRenderer.draw(canvas._ctx, points, opts);
if (s.synchronizeHighlight !== false && plot.series.length >= s.synchronizeHighlight && s.synchronizeHighlight !== sidx) {
s = plot.series[s.synchronizeHighlight];
opts = {fillStyle: s.highlightColors[pidx], fillRect: false};
s.renderer.shapeRenderer.draw(canvas._ctx, s._barPoints[pidx], opts);
}
canvas = null;
}
function unhighlight (plot) {
var canvas = plot.plugins.pyramidRenderer.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.pyramidRenderer.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.pyramidRenderer.highlightedSeriesIndex && ins[1] == plot.series[ins[0]]._highlightedPoint)) {
var evt = jQuery.Event('jqplotDataHighlight');
evt.which = ev.which;
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);
}
}
// Have to add hook here, becuase it needs called before series is inited.
$.jqplot.preInitHooks.push(preInit);
})(jQuery);