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msd2/tracking/piwik/libs/jqplot/jqplot.shapeRenderer.js

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+/**
+ * jqPlot
+ * Pure JavaScript plotting plugin using jQuery
+ *
+ * Version: @VERSION
+ * Revision: @REVISION
+ *
+ * Copyright (c) 2009-2013 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.shapeRenderer
+    // The default jqPlot shape renderer.  Given a set of points will
+    // plot them and either stroke a line (fill = false) or fill them (fill = true).
+    // If a filled shape is desired, closePath = true must also be set to close
+    // the shape.
+    $.jqplot.ShapeRenderer = function(options){
+        
+        this.lineWidth = 1.5;
+        // prop: linePattern
+        // line pattern 'dashed', 'dotted', 'solid', some combination
+        // of '-' and '.' characters such as '.-.' or a numerical array like 
+        // [draw, skip, draw, skip, ...] such as [1, 10] to draw a dotted line, 
+        // [1, 10, 20, 10] to draw a dot-dash line, and so on.
+        this.linePattern = 'solid';
+        // prop: lineJoin
+        // How line segments of the shadow are joined.
+        this.lineJoin = 'miter';
+        // prop: lineCap
+        // how ends of the shadow line are rendered.
+        this.lineCap = 'round';
+        // prop; closePath
+        // whether line path segment is closed upon itself.
+        this.closePath = false;
+        // prop: fill
+        // whether to fill the shape.
+        this.fill = false;
+        // prop: isarc
+        // whether the shadow is an arc or not.
+        this.isarc = false;
+        // prop: fillRect
+        // true to draw shape as a filled rectangle.
+        this.fillRect = false;
+        // prop: strokeRect
+        // true to draw shape as a stroked rectangle.
+        this.strokeRect = false;
+        // prop: clearRect
+        // true to cear a rectangle.
+        this.clearRect = false;
+        // prop: strokeStyle
+        // css color spec for the stoke style
+        this.strokeStyle = '#999999';
+        // prop: fillStyle
+        // css color spec for the fill style.
+        this.fillStyle = '#999999'; 
+        
+        $.extend(true, this, options);
+    };
+    
+    $.jqplot.ShapeRenderer.prototype.init = function(options) {
+        $.extend(true, this, options);
+    };
+    
+    // function: draw
+    // draws the shape.
+    //
+    // ctx - canvas drawing context
+    // points - array of points for shapes or 
+    // [x, y, width, height] for rectangles or
+    // [x, y, radius, start angle (rad), end angle (rad)] for circles and arcs.
+    $.jqplot.ShapeRenderer.prototype.draw = function(ctx, points, options) {
+        ctx.save();
+        var opts = (options != null) ? options : {};
+        var fill = (opts.fill != null) ? opts.fill : this.fill;
+        var closePath = (opts.closePath != null) ? opts.closePath : this.closePath;
+        var fillRect = (opts.fillRect != null) ? opts.fillRect : this.fillRect;
+        var strokeRect = (opts.strokeRect != null) ? opts.strokeRect : this.strokeRect;
+        var clearRect = (opts.clearRect != null) ? opts.clearRect : this.clearRect;
+        var isarc = (opts.isarc != null) ? opts.isarc : this.isarc;
+        var linePattern = (opts.linePattern != null) ? opts.linePattern : this.linePattern;
+        var ctxPattern = $.jqplot.LinePattern(ctx, linePattern);
+        ctx.lineWidth = opts.lineWidth || this.lineWidth;
+        ctx.lineJoin = opts.lineJoin || this.lineJoin;
+        ctx.lineCap = opts.lineCap || this.lineCap;
+        ctx.strokeStyle = (opts.strokeStyle || opts.color) || this.strokeStyle;
+        ctx.fillStyle = opts.fillStyle || this.fillStyle;
+        ctx.beginPath();
+        if (isarc) {
+            ctx.arc(points[0], points[1], points[2], points[3], points[4], true);   
+            if (closePath) {
+                ctx.closePath();
+            }
+            if (fill) {
+                ctx.fill();
+            }
+            else {
+                ctx.stroke();
+            }
+            ctx.restore();
+            return;
+        }
+        else if (clearRect) {
+            ctx.clearRect(points[0], points[1], points[2], points[3]);
+            ctx.restore();
+            return;
+        }
+        else if (fillRect || strokeRect) {
+            if (fillRect) {
+                ctx.fillRect(points[0], points[1], points[2], points[3]);
+            }
+            if (strokeRect) {
+                ctx.strokeRect(points[0], points[1], points[2], points[3]);
+                ctx.restore();
+                return;
+            }
+        }
+        else if (points && points.length){
+            var move = true;
+            for (var i=0; i<points.length; i++) {
+                // skip to the first non-null point and move to it.
+                if (points[i][0] != null && points[i][1] != null) {
+                    if (move) {
+                        ctxPattern.moveTo(points[i][0], points[i][1]);
+                        move = false;
+                    }
+                    else {
+                        ctxPattern.lineTo(points[i][0], points[i][1]);
+                    }
+                }
+                else {
+                    move = true;
+                }
+            }
+            if (closePath) {
+                ctxPattern.closePath();
+            }
+            if (fill) {
+                ctx.fill();
+            }
+            else {
+                ctx.stroke();
+            }
+        }
+        ctx.restore();
+    };
+})(jQuery);