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aschwarz
383
msd2/tracking/piwik/libs/jqplot/jqplot.canvasGridRenderer.js
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383
msd2/tracking/piwik/libs/jqplot/jqplot.canvasGridRenderer.js
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/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: @VERSION
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* Revision: @REVISION
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*
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* Copyright (c) 2009-2013 Chris Leonello
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* jqPlot is currently available for use in all personal or commercial projects
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
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* choose the license that best suits your project and use it accordingly.
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*
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* Although not required, the author would appreciate an email letting him
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* know of any substantial use of jqPlot. You can reach the author at:
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* chris at jqplot dot com or see http://www.jqplot.com/info.php .
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*
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* If you are feeling kind and generous, consider supporting the project by
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* making a donation at: http://www.jqplot.com/donate.php .
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*
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
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*
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* version 2007.04.27
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* author Ash Searle
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* http://hexmen.com/blog/2007/03/printf-sprintf/
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* http://hexmen.com/js/sprintf.js
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* The author (Ash Searle) has placed this code in the public domain:
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* "This code is unrestricted: you are free to use it however you like."
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*
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*/
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(function($) {
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// Class: $.jqplot.CanvasGridRenderer
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// The default jqPlot grid renderer, creating a grid on a canvas element.
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// The renderer has no additional options beyond the <Grid> class.
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$.jqplot.CanvasGridRenderer = function(){
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this.shadowRenderer = new $.jqplot.ShadowRenderer();
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};
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// called with context of Grid object
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$.jqplot.CanvasGridRenderer.prototype.init = function(options) {
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this._ctx;
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$.extend(true, this, options);
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// set the shadow renderer options
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var sopts = {lineJoin:'miter', lineCap:'round', fill:false, isarc:false, angle:this.shadowAngle, offset:this.shadowOffset, alpha:this.shadowAlpha, depth:this.shadowDepth, lineWidth:this.shadowWidth, closePath:false, strokeStyle:this.shadowColor};
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this.renderer.shadowRenderer.init(sopts);
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};
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// called with context of Grid.
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$.jqplot.CanvasGridRenderer.prototype.createElement = function(plot) {
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var elem;
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// Memory Leaks patch
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if (this._elem) {
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if ($.jqplot.use_excanvas && window.G_vmlCanvasManager.uninitElement !== undefined) {
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elem = this._elem.get(0);
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window.G_vmlCanvasManager.uninitElement(elem);
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elem = null;
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}
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this._elem.emptyForce();
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this._elem = null;
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}
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elem = plot.canvasManager.getCanvas();
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var w = this._plotDimensions.width;
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var h = this._plotDimensions.height;
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elem.width = w;
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elem.height = h;
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this._elem = $(elem);
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this._elem.addClass('jqplot-grid-canvas');
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this._elem.css({ position: 'absolute', left: 0, top: 0 });
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elem = plot.canvasManager.initCanvas(elem);
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this._top = this._offsets.top;
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this._bottom = h - this._offsets.bottom;
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this._left = this._offsets.left;
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this._right = w - this._offsets.right;
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this._width = this._right - this._left;
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this._height = this._bottom - this._top;
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// avoid memory leak
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elem = null;
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return this._elem;
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};
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$.jqplot.CanvasGridRenderer.prototype.draw = function() {
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this._ctx = this._elem.get(0).getContext("2d");
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var ctx = this._ctx;
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var axes = this._axes;
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// Add the grid onto the grid canvas. This is the bottom most layer.
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ctx.save();
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ctx.clearRect(0, 0, this._plotDimensions.width, this._plotDimensions.height);
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ctx.fillStyle = this.backgroundColor || this.background;
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ctx.fillRect(this._left, this._top, this._width, this._height);
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ctx.save();
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ctx.lineJoin = 'miter';
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ctx.lineCap = 'butt';
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ctx.lineWidth = this.gridLineWidth;
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ctx.strokeStyle = this.gridLineColor;
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var b, e, s, m;
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var ax = ['xaxis', 'yaxis', 'x2axis', 'y2axis'];
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for (var i=4; i>0; i--) {
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var name = ax[i-1];
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var axis = axes[name];
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var ticks = axis._ticks;
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var numticks = ticks.length;
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if (axis.show) {
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if (axis.drawBaseline) {
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var bopts = {};
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if (axis.baselineWidth !== null) {
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bopts.lineWidth = axis.baselineWidth;
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}
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if (axis.baselineColor !== null) {
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bopts.strokeStyle = axis.baselineColor;
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}
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switch (name) {
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case 'xaxis':
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drawLine (this._left, this._bottom, this._right, this._bottom, bopts);
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break;
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case 'yaxis':
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drawLine (this._left, this._bottom, this._left, this._top, bopts);
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break;
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case 'x2axis':
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drawLine (this._left, this._bottom, this._right, this._bottom, bopts);
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break;
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case 'y2axis':
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drawLine (this._right, this._bottom, this._right, this._top, bopts);
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break;
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}
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}
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for (var j=numticks; j>0; j--) {
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var t = ticks[j-1];
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if (t.show) {
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var pos = Math.round(axis.u2p(t.value)) + 0.5;
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switch (name) {
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case 'xaxis':
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// draw the grid line if we should
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if (t.showGridline && this.drawGridlines && ((!t.isMinorTick && axis.drawMajorGridlines) || (t.isMinorTick && axis.drawMinorGridlines)) ) {
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drawLine(pos, this._top, pos, this._bottom);
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}
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// draw the mark
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if (t.showMark && t.mark && ((!t.isMinorTick && axis.drawMajorTickMarks) || (t.isMinorTick && axis.drawMinorTickMarks)) ) {
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s = t.markSize;
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m = t.mark;
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var pos = Math.round(axis.u2p(t.value)) + 0.5;
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switch (m) {
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case 'outside':
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b = this._bottom;
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e = this._bottom+s;
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break;
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case 'inside':
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b = this._bottom-s;
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e = this._bottom;
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break;
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case 'cross':
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b = this._bottom-s;
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e = this._bottom+s;
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break;
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default:
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b = this._bottom;
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e = this._bottom+s;
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break;
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}
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// draw the shadow
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if (this.shadow) {
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this.renderer.shadowRenderer.draw(ctx, [[pos,b],[pos,e]], {lineCap:'butt', lineWidth:this.gridLineWidth, offset:this.gridLineWidth*0.75, depth:2, fill:false, closePath:false});
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}
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// draw the line
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drawLine(pos, b, pos, e);
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}
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break;
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case 'yaxis':
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// draw the grid line
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if (t.showGridline && this.drawGridlines && ((!t.isMinorTick && axis.drawMajorGridlines) || (t.isMinorTick && axis.drawMinorGridlines)) ) {
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drawLine(this._right, pos, this._left, pos);
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}
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// draw the mark
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if (t.showMark && t.mark && ((!t.isMinorTick && axis.drawMajorTickMarks) || (t.isMinorTick && axis.drawMinorTickMarks)) ) {
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s = t.markSize;
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m = t.mark;
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var pos = Math.round(axis.u2p(t.value)) + 0.5;
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switch (m) {
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case 'outside':
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b = this._left-s;
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e = this._left;
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break;
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case 'inside':
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b = this._left;
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e = this._left+s;
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break;
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case 'cross':
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b = this._left-s;
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e = this._left+s;
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break;
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default:
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b = this._left-s;
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e = this._left;
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break;
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}
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// draw the shadow
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if (this.shadow) {
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this.renderer.shadowRenderer.draw(ctx, [[b, pos], [e, pos]], {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false});
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}
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drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor});
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}
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break;
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case 'x2axis':
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// draw the grid line
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if (t.showGridline && this.drawGridlines && ((!t.isMinorTick && axis.drawMajorGridlines) || (t.isMinorTick && axis.drawMinorGridlines)) ) {
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drawLine(pos, this._bottom, pos, this._top);
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}
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// draw the mark
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if (t.showMark && t.mark && ((!t.isMinorTick && axis.drawMajorTickMarks) || (t.isMinorTick && axis.drawMinorTickMarks)) ) {
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s = t.markSize;
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m = t.mark;
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var pos = Math.round(axis.u2p(t.value)) + 0.5;
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switch (m) {
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case 'outside':
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b = this._top-s;
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e = this._top;
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break;
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case 'inside':
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b = this._top;
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e = this._top+s;
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break;
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case 'cross':
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b = this._top-s;
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e = this._top+s;
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break;
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default:
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b = this._top-s;
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e = this._top;
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break;
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}
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// draw the shadow
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if (this.shadow) {
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this.renderer.shadowRenderer.draw(ctx, [[pos,b],[pos,e]], {lineCap:'butt', lineWidth:this.gridLineWidth, offset:this.gridLineWidth*0.75, depth:2, fill:false, closePath:false});
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}
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drawLine(pos, b, pos, e);
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}
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break;
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case 'y2axis':
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// draw the grid line
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if (t.showGridline && this.drawGridlines && ((!t.isMinorTick && axis.drawMajorGridlines) || (t.isMinorTick && axis.drawMinorGridlines)) ) {
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drawLine(this._left, pos, this._right, pos);
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}
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// draw the mark
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if (t.showMark && t.mark && ((!t.isMinorTick && axis.drawMajorTickMarks) || (t.isMinorTick && axis.drawMinorTickMarks)) ) {
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s = t.markSize;
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m = t.mark;
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var pos = Math.round(axis.u2p(t.value)) + 0.5;
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switch (m) {
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case 'outside':
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b = this._right;
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e = this._right+s;
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break;
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case 'inside':
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b = this._right-s;
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e = this._right;
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break;
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case 'cross':
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b = this._right-s;
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e = this._right+s;
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break;
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default:
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b = this._right;
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e = this._right+s;
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break;
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}
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// draw the shadow
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if (this.shadow) {
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this.renderer.shadowRenderer.draw(ctx, [[b, pos], [e, pos]], {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false});
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}
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drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor});
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}
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break;
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default:
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break;
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}
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}
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}
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t = null;
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}
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axis = null;
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ticks = null;
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}
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// Now draw grid lines for additional y axes
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//////
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// TO DO: handle yMidAxis
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//////
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ax = ['y3axis', 'y4axis', 'y5axis', 'y6axis', 'y7axis', 'y8axis', 'y9axis', 'yMidAxis'];
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for (var i=7; i>0; i--) {
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var axis = axes[ax[i-1]];
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var ticks = axis._ticks;
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if (axis.show) {
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var tn = ticks[axis.numberTicks-1];
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var t0 = ticks[0];
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var left = axis.getLeft();
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var points = [[left, tn.getTop() + tn.getHeight()/2], [left, t0.getTop() + t0.getHeight()/2 + 1.0]];
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// draw the shadow
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if (this.shadow) {
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this.renderer.shadowRenderer.draw(ctx, points, {lineCap:'butt', fill:false, closePath:false});
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}
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// draw the line
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drawLine(points[0][0], points[0][1], points[1][0], points[1][1], {lineCap:'butt', strokeStyle:axis.borderColor, lineWidth:axis.borderWidth});
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// draw the tick marks
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for (var j=ticks.length; j>0; j--) {
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var t = ticks[j-1];
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s = t.markSize;
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m = t.mark;
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var pos = Math.round(axis.u2p(t.value)) + 0.5;
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if (t.showMark && t.mark) {
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switch (m) {
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case 'outside':
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b = left;
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e = left+s;
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break;
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case 'inside':
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b = left-s;
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e = left;
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break;
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case 'cross':
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b = left-s;
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e = left+s;
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break;
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default:
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b = left;
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e = left+s;
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break;
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}
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points = [[b,pos], [e,pos]];
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// draw the shadow
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if (this.shadow) {
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this.renderer.shadowRenderer.draw(ctx, points, {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false});
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}
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// draw the line
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drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor});
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}
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t = null;
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}
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t0 = null;
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}
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axis = null;
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ticks = null;
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}
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ctx.restore();
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function drawLine(bx, by, ex, ey, opts) {
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ctx.save();
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opts = opts || {};
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if (opts.lineWidth == null || opts.lineWidth != 0){
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$.extend(true, ctx, opts);
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ctx.beginPath();
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ctx.moveTo(bx, by);
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ctx.lineTo(ex, ey);
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ctx.stroke();
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ctx.restore();
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}
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}
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if (this.shadow) {
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var points = [[this._left, this._bottom], [this._right, this._bottom], [this._right, this._top]];
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this.renderer.shadowRenderer.draw(ctx, points);
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}
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// Now draw border around grid. Use axis border definitions. start at
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// upper left and go clockwise.
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if (this.borderWidth != 0 && this.drawBorder) {
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drawLine (this._left, this._top, this._right, this._top, {lineCap:'round', strokeStyle:axes.x2axis.borderColor, lineWidth:axes.x2axis.borderWidth});
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drawLine (this._right, this._top, this._right, this._bottom, {lineCap:'round', strokeStyle:axes.y2axis.borderColor, lineWidth:axes.y2axis.borderWidth});
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drawLine (this._right, this._bottom, this._left, this._bottom, {lineCap:'round', strokeStyle:axes.xaxis.borderColor, lineWidth:axes.xaxis.borderWidth});
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drawLine (this._left, this._bottom, this._left, this._top, {lineCap:'round', strokeStyle:axes.yaxis.borderColor, lineWidth:axes.yaxis.borderWidth});
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}
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// ctx.lineWidth = this.borderWidth;
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// ctx.strokeStyle = this.borderColor;
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// ctx.strokeRect(this._left, this._top, this._width, this._height);
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ctx.restore();
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ctx = null;
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axes = null;
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};
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})(jQuery);
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Reference in New Issue
Block a user