text: /**
   * jqPlot
   * Pure JavaScript plotting plugin using jQuery
   *
   * Version: 1.0.8
   * Revision: abandon : there is no Mercurial repository here (.hg not found)
   *
   * 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.CanvasAxisLabelRenderer
      * Renderer to draw axis labels with a canvas element to support advanced
      * featrues such as rotated text.  This renderer uses a separate rendering engine
      * to draw the text on the canvas.  Two modes of rendering the text are available.
      * If the browser has native font support for canvas fonts (currently Mozila 3.5
      * and Safari 4), you can enable text rendering with the canvas fillText method.
      * You do so by setting the "enableFontSupport" option to true. 
      * 
      * Browsers lacking native font support will have the text drawn on the canvas
      * using the Hershey font metrics.  Even if the "enableFontSupport" option is true
      * non-supporting browsers will still render with the Hershey font.
      * 
      */
      $.jqplot.CanvasAxisLabelRenderer = function(options) {
          // Group: Properties
          
          // prop: angle
          // angle of text, measured clockwise from x axis.
          this.angle = 0;
          // name of the axis associated with this tick
          this.axis;
          // prop: show
          // whether or not to show the tick (mark and label).
          this.show = true;
          // prop: showLabel
          // whether or not to show the label.
          this.showLabel = true;
          // prop: label
          // label for the axis.
          this.label = '';
          // prop: fontFamily
          // CSS spec for the font-family css attribute.
          // Applies only to browsers supporting native font rendering in the
          // canvas tag.  Currently Mozilla 3.5 and Safari 4.
          this.fontFamily = '"Trebuchet MS", Arial, Helvetica, sans-serif';
          // prop: fontSize
          // CSS spec for font size.
          this.fontSize = '11pt';
          // prop: fontWeight
          // CSS spec for fontWeight:  normal, bold, bolder, lighter or a number 100 - 900
          this.fontWeight = 'normal';
          // prop: fontStretch
          // Multiplier to condense or expand font width.  
          // Applies only to browsers which don't support canvas native font rendering.
          this.fontStretch = 1.0;
          // prop: textColor
          // css spec for the color attribute.
          this.textColor = '#666666';
          // prop: enableFontSupport
          // true to turn on native canvas font support in Mozilla 3.5+ and Safari 4+.
          // If true, label will be drawn with canvas tag native support for fonts.
          // If false, label will be drawn with Hershey font metrics.
          this.enableFontSupport = true;
          // prop: pt2px
          // Point to pixel scaling factor, used for computing height of bounding box
          // around a label.  The labels text renderer has a default setting of 1.4, which 
          // should be suitable for most fonts.  Leave as null to use default.  If tops of
          // letters appear clipped, increase this.  If bounding box seems too big, decrease.
          // This is an issue only with the native font renderering capabilities of Mozilla
          // 3.5 and Safari 4 since they do not provide a method to determine the font height.
          this.pt2px = null;
          
          this._elem;
          this._ctx;
          this._plotWidth;
          this._plotHeight;
          this._plotDimensions = {height:null, width:null};
          
          $.extend(true, this, options);
          
          if (options.angle == null && this.axis != 'xaxis' && this.axis != 'x2axis') {
              this.angle = -90;
          }
          
          var ropts = {fontSize:this.fontSize, fontWeight:this.fontWeight, fontStretch:this.fontStretch, fillStyle:this.textColor, angle:this.getAngleRad(), fontFamily:this.fontFamily};
          if (this.pt2px) {
              ropts.pt2px = this.pt2px;
          }
          
          if (this.enableFontSupport) {
              if ($.jqplot.support_canvas_text()) {
                  this._textRenderer = new $.jqplot.CanvasFontRenderer(ropts);
              }
              
              else {
                  this._textRenderer = new $.jqplot.CanvasTextRenderer(ropts); 
              }
          }
          else {
              this._textRenderer = new $.jqplot.CanvasTextRenderer(ropts); 
          }
      };
      
      $.jqplot.CanvasAxisLabelRenderer.prototype.init = function(options) {
          $.extend(true, this, options);
          this._textRenderer.init({fontSize:this.fontSize, fontWeight:this.fontWeight, fontStretch:this.fontStretch, fillStyle:this.textColor, angle:this.getAngleRad(), fontFamily:this.fontFamily});
      };
      
      // return width along the x axis
      // will check first to see if an element exists.
      // if not, will return the computed text box width.
      $.jqplot.CanvasAxisLabelRenderer.prototype.getWidth = function(ctx) {
          if (this._elem) {
           return this._elem.outerWidth(true);
          }
          else {
              var tr = this._textRenderer;
              var l = tr.getWidth(ctx);
              var h = tr.getHeight(ctx);
              var w = Math.abs(Math.sin(tr.angle)*h) + Math.abs(Math.cos(tr.angle)*l);
              return w;
          }
      };
      
      // return height along the y axis.
      $.jqplot.CanvasAxisLabelRenderer.prototype.getHeight = function(ctx) {
          if (this._elem) {
           return this._elem.outerHeight(true);
          }
          else {
              var tr = this._textRenderer;
              var l = tr.getWidth(ctx);
              var h = tr.getHeight(ctx);
              var w = Math.abs(Math.cos(tr.angle)*h) + Math.abs(Math.sin(tr.angle)*l);
              return w;
          }
      };
      
      $.jqplot.CanvasAxisLabelRenderer.prototype.getAngleRad = function() {
          var a = this.angle * Math.PI/180;
          return a;
      };
      
      $.jqplot.CanvasAxisLabelRenderer.prototype.draw = function(ctx, plot) {
            // Memory Leaks patch
            if (this._elem) {
                if ($.jqplot.use_excanvas && window.G_vmlCanvasManager.uninitElement !== undefined) {
                    window.G_vmlCanvasManager.uninitElement(this._elem.get(0));
                }
              
                this._elem.emptyForce();
                this._elem = null;
            }
  
          // create a canvas here, but can't draw on it untill it is appended
          // to dom for IE compatability.
          var elem = plot.canvasManager.getCanvas();
  
          this._textRenderer.setText(this.label, ctx);
          var w = this.getWidth(ctx);
          var h = this.getHeight(ctx);
          elem.width = w;
          elem.height = h;
          elem.style.width = w;
          elem.style.height = h;
          
          elem = plot.canvasManager.initCanvas(elem);
  
          this._elem = $(elem);
          this._elem.css({ position: 'absolute'});
          this._elem.addClass('jqplot-'+this.axis+'-label');
          
          elem = null;
          return this._elem;
      };
      
      $.jqplot.CanvasAxisLabelRenderer.prototype.pack = function() {
          this._textRenderer.draw(this._elem.get(0).getContext("2d"), this.label);
      };
      
  })(jQuery);