| 0,0 → 1,334 |
|---|
| /** |
| * Copyright (c) 2009 Chris Leonello |
| * jqPlot is currently available for use in all personal or commercial projects |
| * under both the MIT and GPL version 2.0 licenses. This means that you can |
| * choose the license that best suits your project and use it accordingly. |
| * |
| * The author would appreciate an email letting him know of any substantial |
| * use of jqPlot. You can reach the author at: chris dot leonello at gmail |
| * dot com or see http://www.jqplot.com/info.php . This is, of course, |
| * not required. |
| * |
| * If you are feeling kind and generous, consider supporting the project by |
| * making a donation at: http://www.jqplot.com/donate.php . |
| * |
| * Thanks for using jqPlot! |
| * |
| */ |
| (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) { |
| // 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; |
| $.extend(true, this, options); |
| // fill is still needed to properly draw the legend. |
| // bars have to be filled. |
| this.fill = true; |
| if (this.barDirection == 'vertical' ) { |
| this._primaryAxis = '_xaxis'; |
| this._stackAxis = 'y'; |
| this.fillAxis = 'y'; |
| } |
| else { |
| this._primaryAxis = '_yaxis'; |
| this._stackAxis = 'x'; |
| this.fillAxis = 'x'; |
| } |
| // 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); |
| }; |
| |
| // called with scope of series |
| function barPreInit(target, data, seriesDefaults, options) { |
| if (this.rendererOptions.barDirection == 'horizontal') { |
| this._stackAxis = 'x'; |
| this._primaryAxis = '_yaxis'; |
| } |
| } |
| |
| $.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 [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.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]; |
| }; |
| |
| $.jqplot.BarRenderer.prototype.draw = 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, pointy, nvals, nseries, pos; |
| |
| if (this.barWidth == null) { |
| this.renderer.setBarWidth.call(this); |
| } |
| |
| var temp = 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) { |
| var negativeColors = new $.jqplot.ColorGenerator(this.negativeSeriesColors); |
| var negativeColor = negativeColors.get(this.index); |
| var isnegative = false; |
| var posfs = opts.fillStyle; |
| var tempfs; |
| |
| if (this.barDirection == 'vertical') { |
| for (var i=0; i<gridData.length; i++) { |
| points = []; |
| var base = gridData[i][0] + this._barNudge; |
| var 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 { |
| ystart = ctx.canvas.height; |
| } |
| } |
| if (this.fillToZero && this._plotData[i][1] < 0) { |
| isnegative = true; |
| opts.fillStyle = negativeColor; |
| } |
| else { |
| opts.fillStyle = posfs; |
| isnegative = false; |
| } |
| |
| 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]); |
| // now draw the shadows if not stacked. |
| // for stacked plots, they are predrawn by drawShadow |
| if (shadow && !this._stack) { |
| this.renderer.shadowRenderer.draw(ctx, points, opts); |
| } |
| this.renderer.shapeRenderer.draw(ctx, points, opts); |
| } |
| } |
| |
| else if (this.barDirection == 'horizontal'){ |
| for (var i=0; i<gridData.length; i++) { |
| 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]); |
| // now draw the shadows if not stacked. |
| // for stacked plots, they are predrawn by drawShadow |
| if (shadow && !this._stack) { |
| this.renderer.shadowRenderer.draw(ctx, points, opts); |
| } |
| this.renderer.shapeRenderer.draw(ctx, points, opts); |
| } |
| } |
| } |
| |
| }; |
| |
| |
| // 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, pointy, nvals, nseries, pos; |
| |
| if (this._stack && this.shadow) { |
| if (this.barWidth == null) { |
| this.renderer.setBarWidth.call(this); |
| } |
| |
| var temp = 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++) { |
| 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++) { |
| 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); |
| } |
| } |
| } |
| |
| } |
| |
| |
| }; |
| })(jQuerySysStatWidget || jQuery); |