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Anonymous committed 2c42be2

initial import

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+// Copyright 2006 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+// Known Issues:
+//
+// * Patterns are not implemented.
+// * Radial gradient are not implemented. The VML version of these look very
+//   different from the canvas one.
+// * Clipping paths are not implemented.
+// * Coordsize. The width and height attribute have higher priority than the
+//   width and height style values which isn't correct.
+// * Painting mode isn't implemented.
+// * Canvas width/height should is using content-box by default. IE in
+//   Quirks mode will draw the canvas using border-box. Either change your
+//   doctype to HTML5
+//   (http://www.whatwg.org/specs/web-apps/current-work/#the-doctype)
+//   or use Box Sizing Behavior from WebFX
+//   (http://webfx.eae.net/dhtml/boxsizing/boxsizing.html)
+// * Non uniform scaling does not correctly scale strokes.
+// * Optimize. There is always room for speed improvements.
+
+// Only add this code if we do not already have a canvas implementation
+if (!document.createElement('canvas').getContext) {
+
+(function() {
+
+  // alias some functions to make (compiled) code shorter
+  var m = Math;
+  var mr = m.round;
+  var ms = m.sin;
+  var mc = m.cos;
+  var abs = m.abs;
+  var sqrt = m.sqrt;
+
+  // this is used for sub pixel precision
+  var Z = 10;
+  var Z2 = Z / 2;
+
+  /**
+   * This funtion is assigned to the <canvas> elements as element.getContext().
+   * @this {HTMLElement}
+   * @return {CanvasRenderingContext2D_}
+   */
+  function getContext() {
+    return this.context_ ||
+        (this.context_ = new CanvasRenderingContext2D_(this));
+  }
+
+  var slice = Array.prototype.slice;
+
+  /**
+   * Binds a function to an object. The returned function will always use the
+   * passed in {@code obj} as {@code this}.
+   *
+   * Example:
+   *
+   *   g = bind(f, obj, a, b)
+   *   g(c, d) // will do f.call(obj, a, b, c, d)
+   *
+   * @param {Function} f The function to bind the object to
+   * @param {Object} obj The object that should act as this when the function
+   *     is called
+   * @param {*} var_args Rest arguments that will be used as the initial
+   *     arguments when the function is called
+   * @return {Function} A new function that has bound this
+   */
+  function bind(f, obj, var_args) {
+    var a = slice.call(arguments, 2);
+    return function() {
+      return f.apply(obj, a.concat(slice.call(arguments)));
+    };
+  }
+
+  var G_vmlCanvasManager_ = {
+    init: function(opt_doc) {
+      if (/MSIE/.test(navigator.userAgent) && !window.opera) {
+        var doc = opt_doc || document;
+        // Create a dummy element so that IE will allow canvas elements to be
+        // recognized.
+        doc.createElement('canvas');
+        doc.attachEvent('onreadystatechange', bind(this.init_, this, doc));
+      }
+    },
+
+    init_: function(doc) {
+      // create xmlns
+      if (!doc.namespaces['g_vml_']) {
+        doc.namespaces.add('g_vml_', 'urn:schemas-microsoft-com:vml',
+                           '#default#VML');
+
+      }
+      if (!doc.namespaces['g_o_']) {
+        doc.namespaces.add('g_o_', 'urn:schemas-microsoft-com:office:office',
+                           '#default#VML');
+      }
+
+      // Setup default CSS.  Only add one style sheet per document
+      if (!doc.styleSheets['ex_canvas_']) {
+        var ss = doc.createStyleSheet();
+        ss.owningElement.id = 'ex_canvas_';
+        ss.cssText = 'canvas{display:inline-block;overflow:hidden;' +
+            // default size is 300x150 in Gecko and Opera
+            'text-align:left;width:300px;height:150px}' +
+            'g_vml_\\:*{behavior:url(#default#VML)}' +
+            'g_o_\\:*{behavior:url(#default#VML)}';
+
+      }
+
+      // find all canvas elements
+      var els = doc.getElementsByTagName('canvas');
+      for (var i = 0; i < els.length; i++) {
+        this.initElement(els[i]);
+      }
+    },
+
+    /**
+     * Public initializes a canvas element so that it can be used as canvas
+     * element from now on. This is called automatically before the page is
+     * loaded but if you are creating elements using createElement you need to
+     * make sure this is called on the element.
+     * @param {HTMLElement} el The canvas element to initialize.
+     * @return {HTMLElement} the element that was created.
+     */
+    initElement: function(el) {
+      if (!el.getContext) {
+
+        el.getContext = getContext;
+
+        // Remove fallback content. There is no way to hide text nodes so we
+        // just remove all childNodes. We could hide all elements and remove
+        // text nodes but who really cares about the fallback content.
+        el.innerHTML = '';
+
+        // do not use inline function because that will leak memory
+        el.attachEvent('onpropertychange', onPropertyChange);
+        el.attachEvent('onresize', onResize);
+
+        var attrs = el.attributes;
+        if (attrs.width && attrs.width.specified) {
+          // TODO: use runtimeStyle and coordsize
+          // el.getContext().setWidth_(attrs.width.nodeValue);
+          el.style.width = attrs.width.nodeValue + 'px';
+        } else {
+          el.width = el.clientWidth;
+        }
+        if (attrs.height && attrs.height.specified) {
+          // TODO: use runtimeStyle and coordsize
+          // el.getContext().setHeight_(attrs.height.nodeValue);
+          el.style.height = attrs.height.nodeValue + 'px';
+        } else {
+          el.height = el.clientHeight;
+        }
+        //el.getContext().setCoordsize_()
+      }
+      return el;
+    }
+  };
+
+  function onPropertyChange(e) {
+    var el = e.srcElement;
+
+    switch (e.propertyName) {
+      case 'width':
+        el.style.width = el.attributes.width.nodeValue + 'px';
+        el.getContext().clearRect();
+        break;
+      case 'height':
+        el.style.height = el.attributes.height.nodeValue + 'px';
+        el.getContext().clearRect();
+        break;
+    }
+  }
+
+  function onResize(e) {
+    var el = e.srcElement;
+    if (el.firstChild) {
+      el.firstChild.style.width =  el.clientWidth + 'px';
+      el.firstChild.style.height = el.clientHeight + 'px';
+    }
+  }
+
+  G_vmlCanvasManager_.init();
+
+  // precompute "00" to "FF"
+  var dec2hex = [];
+  for (var i = 0; i < 16; i++) {
+    for (var j = 0; j < 16; j++) {
+      dec2hex[i * 16 + j] = i.toString(16) + j.toString(16);
+    }
+  }
+
+  function createMatrixIdentity() {
+    return [
+      [1, 0, 0],
+      [0, 1, 0],
+      [0, 0, 1]
+    ];
+  }
+
+  function matrixMultiply(m1, m2) {
+    var result = createMatrixIdentity();
+
+    for (var x = 0; x < 3; x++) {
+      for (var y = 0; y < 3; y++) {
+        var sum = 0;
+
+        for (var z = 0; z < 3; z++) {
+          sum += m1[x][z] * m2[z][y];
+        }
+
+        result[x][y] = sum;
+      }
+    }
+    return result;
+  }
+
+  function copyState(o1, o2) {
+    o2.fillStyle     = o1.fillStyle;
+    o2.lineCap       = o1.lineCap;
+    o2.lineJoin      = o1.lineJoin;
+    o2.lineWidth     = o1.lineWidth;
+    o2.miterLimit    = o1.miterLimit;
+    o2.shadowBlur    = o1.shadowBlur;
+    o2.shadowColor   = o1.shadowColor;
+    o2.shadowOffsetX = o1.shadowOffsetX;
+    o2.shadowOffsetY = o1.shadowOffsetY;
+    o2.strokeStyle   = o1.strokeStyle;
+    o2.globalAlpha   = o1.globalAlpha;
+    o2.arcScaleX_    = o1.arcScaleX_;
+    o2.arcScaleY_    = o1.arcScaleY_;
+    o2.lineScale_    = o1.lineScale_;
+  }
+
+  function processStyle(styleString) {
+    var str, alpha = 1;
+
+    styleString = String(styleString);
+    if (styleString.substring(0, 3) == 'rgb') {
+      var start = styleString.indexOf('(', 3);
+      var end = styleString.indexOf(')', start + 1);
+      var guts = styleString.substring(start + 1, end).split(',');
+
+      str = '#';
+      for (var i = 0; i < 3; i++) {
+        str += dec2hex[Number(guts[i])];
+      }
+
+      if (guts.length == 4 && styleString.substr(3, 1) == 'a') {
+        alpha = guts[3];
+      }
+    } else {
+      str = styleString;
+    }
+
+    return {color: str, alpha: alpha};
+  }
+
+  function processLineCap(lineCap) {
+    switch (lineCap) {
+      case 'butt':
+        return 'flat';
+      case 'round':
+        return 'round';
+      case 'square':
+      default:
+        return 'square';
+    }
+  }
+
+  /**
+   * This class implements CanvasRenderingContext2D interface as described by
+   * the WHATWG.
+   * @param {HTMLElement} surfaceElement The element that the 2D context should
+   * be associated with
+   */
+  function CanvasRenderingContext2D_(surfaceElement) {
+    this.m_ = createMatrixIdentity();
+
+    this.mStack_ = [];
+    this.aStack_ = [];
+    this.currentPath_ = [];
+
+    // Canvas context properties
+    this.strokeStyle = '#000';
+    this.fillStyle = '#000';
+
+    this.lineWidth = 1;
+    this.lineJoin = 'miter';
+    this.lineCap = 'butt';
+    this.miterLimit = Z * 1;
+    this.globalAlpha = 1;
+    this.canvas = surfaceElement;
+
+    var el = surfaceElement.ownerDocument.createElement('div');
+    el.style.width =  surfaceElement.clientWidth + 'px';
+    el.style.height = surfaceElement.clientHeight + 'px';
+    el.style.overflow = 'hidden';
+    el.style.position = 'absolute';
+    surfaceElement.appendChild(el);
+
+    this.element_ = el;
+    this.arcScaleX_ = 1;
+    this.arcScaleY_ = 1;
+    this.lineScale_ = 1;
+  }
+
+  var contextPrototype = CanvasRenderingContext2D_.prototype;
+  contextPrototype.clearRect = function() {
+    this.element_.innerHTML = '';
+  };
+
+  contextPrototype.beginPath = function() {
+    // TODO: Branch current matrix so that save/restore has no effect
+    //       as per safari docs.
+    this.currentPath_ = [];
+  };
+
+  contextPrototype.moveTo = function(aX, aY) {
+    var p = this.getCoords_(aX, aY);
+    this.currentPath_.push({type: 'moveTo', x: p.x, y: p.y});
+    this.currentX_ = p.x;
+    this.currentY_ = p.y;
+  };
+
+  contextPrototype.lineTo = function(aX, aY) {
+    var p = this.getCoords_(aX, aY);
+    this.currentPath_.push({type: 'lineTo', x: p.x, y: p.y});
+
+    this.currentX_ = p.x;
+    this.currentY_ = p.y;
+  };
+
+  contextPrototype.bezierCurveTo = function(aCP1x, aCP1y,
+                                            aCP2x, aCP2y,
+                                            aX, aY) {
+    var p = this.getCoords_(aX, aY);
+    var cp1 = this.getCoords_(aCP1x, aCP1y);
+    var cp2 = this.getCoords_(aCP2x, aCP2y);
+    bezierCurveTo(this, cp1, cp2, p);
+  };
+
+  // Helper function that takes the already fixed cordinates.
+  function bezierCurveTo(self, cp1, cp2, p) {
+    self.currentPath_.push({
+      type: 'bezierCurveTo',
+      cp1x: cp1.x,
+      cp1y: cp1.y,
+      cp2x: cp2.x,
+      cp2y: cp2.y,
+      x: p.x,
+      y: p.y
+    });
+    self.currentX_ = p.x;
+    self.currentY_ = p.y;
+  }
+
+  contextPrototype.quadraticCurveTo = function(aCPx, aCPy, aX, aY) {
+    // the following is lifted almost directly from
+    // http://developer.mozilla.org/en/docs/Canvas_tutorial:Drawing_shapes
+
+    var cp = this.getCoords_(aCPx, aCPy);
+    var p = this.getCoords_(aX, aY);
+
+    var cp1 = {
+      x: this.currentX_ + 2.0 / 3.0 * (cp.x - this.currentX_),
+      y: this.currentY_ + 2.0 / 3.0 * (cp.y - this.currentY_)
+    };
+    var cp2 = {
+      x: cp1.x + (p.x - this.currentX_) / 3.0,
+      y: cp1.y + (p.y - this.currentY_) / 3.0
+    };
+
+    bezierCurveTo(this, cp1, cp2, p);
+  };
+
+  contextPrototype.arc = function(aX, aY, aRadius,
+                                  aStartAngle, aEndAngle, aClockwise) {
+    aRadius *= Z;
+    var arcType = aClockwise ? 'at' : 'wa';
+
+    var xStart = aX + mc(aStartAngle) * aRadius - Z2;
+    var yStart = aY + ms(aStartAngle) * aRadius - Z2;
+
+    var xEnd = aX + mc(aEndAngle) * aRadius - Z2;
+    var yEnd = aY + ms(aEndAngle) * aRadius - Z2;
+
+    // IE won't render arches drawn counter clockwise if xStart == xEnd.
+    if (xStart == xEnd && !aClockwise) {
+      xStart += 0.125; // Offset xStart by 1/80 of a pixel. Use something
+                       // that can be represented in binary
+    }
+
+    var p = this.getCoords_(aX, aY);
+    var pStart = this.getCoords_(xStart, yStart);
+    var pEnd = this.getCoords_(xEnd, yEnd);
+
+    this.currentPath_.push({type: arcType,
+                           x: p.x,
+                           y: p.y,
+                           radius: aRadius,
+                           xStart: pStart.x,
+                           yStart: pStart.y,
+                           xEnd: pEnd.x,
+                           yEnd: pEnd.y});
+
+  };
+
+  contextPrototype.rect = function(aX, aY, aWidth, aHeight) {
+    this.moveTo(aX, aY);
+    this.lineTo(aX + aWidth, aY);
+    this.lineTo(aX + aWidth, aY + aHeight);
+    this.lineTo(aX, aY + aHeight);
+    this.closePath();
+  };
+
+  contextPrototype.strokeRect = function(aX, aY, aWidth, aHeight) {
+    var oldPath = this.currentPath_;
+    this.beginPath();
+
+    this.moveTo(aX, aY);
+    this.lineTo(aX + aWidth, aY);
+    this.lineTo(aX + aWidth, aY + aHeight);
+    this.lineTo(aX, aY + aHeight);
+    this.closePath();
+    this.stroke();
+
+    this.currentPath_ = oldPath;
+  };
+
+  contextPrototype.fillRect = function(aX, aY, aWidth, aHeight) {
+    var oldPath = this.currentPath_;
+    this.beginPath();
+
+    this.moveTo(aX, aY);
+    this.lineTo(aX + aWidth, aY);
+    this.lineTo(aX + aWidth, aY + aHeight);
+    this.lineTo(aX, aY + aHeight);
+    this.closePath();
+    this.fill();
+
+    this.currentPath_ = oldPath;
+  };
+
+  contextPrototype.createLinearGradient = function(aX0, aY0, aX1, aY1) {
+    var gradient = new CanvasGradient_('gradient');
+    gradient.x0_ = aX0;
+    gradient.y0_ = aY0;
+    gradient.x1_ = aX1;
+    gradient.y1_ = aY1;
+    return gradient;
+  };
+
+  contextPrototype.createRadialGradient = function(aX0, aY0, aR0,
+                                                   aX1, aY1, aR1) {
+    var gradient = new CanvasGradient_('gradientradial');
+    gradient.x0_ = aX0;
+    gradient.y0_ = aY0;
+    gradient.r0_ = aR0;
+    gradient.x1_ = aX1;
+    gradient.y1_ = aY1;
+    gradient.r1_ = aR1;
+    return gradient;
+  };
+
+  contextPrototype.drawImage = function(image, var_args) {
+    var dx, dy, dw, dh, sx, sy, sw, sh;
+
+    // to find the original width we overide the width and height
+    var oldRuntimeWidth = image.runtimeStyle.width;
+    var oldRuntimeHeight = image.runtimeStyle.height;
+    image.runtimeStyle.width = 'auto';
+    image.runtimeStyle.height = 'auto';
+
+    // get the original size
+    var w = image.width;
+    var h = image.height;
+
+    // and remove overides
+    image.runtimeStyle.width = oldRuntimeWidth;
+    image.runtimeStyle.height = oldRuntimeHeight;
+
+    if (arguments.length == 3) {
+      dx = arguments[1];
+      dy = arguments[2];
+      sx = sy = 0;
+      sw = dw = w;
+      sh = dh = h;
+    } else if (arguments.length == 5) {
+      dx = arguments[1];
+      dy = arguments[2];
+      dw = arguments[3];
+      dh = arguments[4];
+      sx = sy = 0;
+      sw = w;
+      sh = h;
+    } else if (arguments.length == 9) {
+      sx = arguments[1];
+      sy = arguments[2];
+      sw = arguments[3];
+      sh = arguments[4];
+      dx = arguments[5];
+      dy = arguments[6];
+      dw = arguments[7];
+      dh = arguments[8];
+    } else {
+      throw Error('Invalid number of arguments');
+    }
+
+    var d = this.getCoords_(dx, dy);
+
+    var w2 = sw / 2;
+    var h2 = sh / 2;
+
+    var vmlStr = [];
+
+    var W = 10;
+    var H = 10;
+
+    // For some reason that I've now forgotten, using divs didn't work
+    vmlStr.push(' <g_vml_:group',
+                ' coordsize="', Z * W, ',', Z * H, '"',
+                ' coordorigin="0,0"' ,
+                ' style="width:', W, 'px;height:', H, 'px;position:absolute;');
+
+    // If filters are necessary (rotation exists), create them
+    // filters are bog-slow, so only create them if abbsolutely necessary
+    // The following check doesn't account for skews (which don't exist
+    // in the canvas spec (yet) anyway.
+
+    if (this.m_[0][0] != 1 || this.m_[0][1]) {
+      var filter = [];
+
+      // Note the 12/21 reversal
+      filter.push('M11=', this.m_[0][0], ',',
+                  'M12=', this.m_[1][0], ',',
+                  'M21=', this.m_[0][1], ',',
+                  'M22=', this.m_[1][1], ',',
+                  'Dx=', mr(d.x / Z), ',',
+                  'Dy=', mr(d.y / Z), '');
+
+      // Bounding box calculation (need to minimize displayed area so that
+      // filters don't waste time on unused pixels.
+      var max = d;
+      var c2 = this.getCoords_(dx + dw, dy);
+      var c3 = this.getCoords_(dx, dy + dh);
+      var c4 = this.getCoords_(dx + dw, dy + dh);
+
+      max.x = m.max(max.x, c2.x, c3.x, c4.x);
+      max.y = m.max(max.y, c2.y, c3.y, c4.y);
+
+      vmlStr.push('padding:0 ', mr(max.x / Z), 'px ', mr(max.y / Z),
+                  'px 0;filter:progid:DXImageTransform.Microsoft.Matrix(',
+                  filter.join(''), ", sizingmethod='clip');")
+    } else {
+      vmlStr.push('top:', mr(d.y / Z), 'px;left:', mr(d.x / Z), 'px;');
+    }
+
+    vmlStr.push(' ">' ,
+                '<g_vml_:image src="', image.src, '"',
+                ' style="width:', Z * dw, 'px;',
+                ' height:', Z * dh, 'px;"',
+                ' cropleft="', sx / w, '"',
+                ' croptop="', sy / h, '"',
+                ' cropright="', (w - sx - sw) / w, '"',
+                ' cropbottom="', (h - sy - sh) / h, '"',
+                ' />',
+                '</g_vml_:group>');
+
+    this.element_.insertAdjacentHTML('BeforeEnd',
+                                    vmlStr.join(''));
+  };
+
+  contextPrototype.stroke = function(aFill) {
+    var lineStr = [];
+    var lineOpen = false;
+    var a = processStyle(aFill ? this.fillStyle : this.strokeStyle);
+    var color = a.color;
+    var opacity = a.alpha * this.globalAlpha;
+
+    var W = 10;
+    var H = 10;
+
+    lineStr.push('<g_vml_:shape',
+                 ' filled="', !!aFill, '"',
+                 ' style="position:absolute;width:', W, 'px;height:', H, 'px;"',
+                 ' coordorigin="0 0" coordsize="', Z * W, ' ', Z * H, '"',
+                 ' stroked="', !aFill, '"',
+                 ' path="');
+
+    var newSeq = false;
+    var min = {x: null, y: null};
+    var max = {x: null, y: null};
+
+    for (var i = 0; i < this.currentPath_.length; i++) {
+      var p = this.currentPath_[i];
+      var c;
+
+      switch (p.type) {
+        case 'moveTo':
+          c = p;
+          lineStr.push(' m ', mr(p.x), ',', mr(p.y));
+          break;
+        case 'lineTo':
+          lineStr.push(' l ', mr(p.x), ',', mr(p.y));
+          break;
+        case 'close':
+          lineStr.push(' x ');
+          p = null;
+          break;
+        case 'bezierCurveTo':
+          lineStr.push(' c ',
+                       mr(p.cp1x), ',', mr(p.cp1y), ',',
+                       mr(p.cp2x), ',', mr(p.cp2y), ',',
+                       mr(p.x), ',', mr(p.y));
+          break;
+        case 'at':
+        case 'wa':
+          lineStr.push(' ', p.type, ' ',
+                       mr(p.x - this.arcScaleX_ * p.radius), ',',
+                       mr(p.y - this.arcScaleY_ * p.radius), ' ',
+                       mr(p.x + this.arcScaleX_ * p.radius), ',',
+                       mr(p.y + this.arcScaleY_ * p.radius), ' ',
+                       mr(p.xStart), ',', mr(p.yStart), ' ',
+                       mr(p.xEnd), ',', mr(p.yEnd));
+          break;
+      }
+
+
+      // TODO: Following is broken for curves due to
+      //       move to proper paths.
+
+      // Figure out dimensions so we can do gradient fills
+      // properly
+      if (p) {
+        if (min.x == null || p.x < min.x) {
+          min.x = p.x;
+        }
+        if (max.x == null || p.x > max.x) {
+          max.x = p.x;
+        }
+        if (min.y == null || p.y < min.y) {
+          min.y = p.y;
+        }
+        if (max.y == null || p.y > max.y) {
+          max.y = p.y;
+        }
+      }
+    }
+    lineStr.push(' ">');
+
+    if (!aFill) {
+      var lineWidth = this.lineScale_ * this.lineWidth;
+
+      // VML cannot correctly render a line if the width is less than 1px.
+      // In that case, we dilute the color to make the line look thinner.
+      if (lineWidth < 1) {
+        opacity *= lineWidth;
+      }
+
+      lineStr.push(
+        '<g_vml_:stroke',
+        ' opacity="', opacity, '"',
+        ' joinstyle="', this.lineJoin, '"',
+        ' miterlimit="', this.miterLimit, '"',
+        ' endcap="', processLineCap(this.lineCap), '"',
+        ' weight="', lineWidth, 'px"',
+        ' color="', color, '" />'
+      );
+    } else if (typeof this.fillStyle == 'object') {
+      var fillStyle = this.fillStyle;
+      var angle = 0;
+      var focus = {x: 0, y: 0};
+
+      // additional offset
+      var shift = 0;
+      // scale factor for offset
+      var expansion = 1;
+
+      if (fillStyle.type_ == 'gradient') {
+        var x0 = fillStyle.x0_ / this.arcScaleX_;
+        var y0 = fillStyle.y0_ / this.arcScaleY_;
+        var x1 = fillStyle.x1_ / this.arcScaleX_;
+        var y1 = fillStyle.y1_ / this.arcScaleY_;
+        var p0 = this.getCoords_(x0, y0);
+        var p1 = this.getCoords_(x1, y1);
+        var dx = p1.x - p0.x;
+        var dy = p1.y - p0.y;
+        angle = Math.atan2(dx, dy) * 180 / Math.PI;
+
+        // The angle should be a non-negative number.
+        if (angle < 0) {
+          angle += 360;
+        }
+
+        // Very small angles produce an unexpected result because they are
+        // converted to a scientific notation string.
+        if (angle < 1e-6) {
+          angle = 0;
+        }
+      } else {
+        var p0 = this.getCoords_(fillStyle.x0_, fillStyle.y0_);
+        var width  = max.x - min.x;
+        var height = max.y - min.y;
+        focus = {
+          x: (p0.x - min.x) / width,
+          y: (p0.y - min.y) / height
+        };
+
+        width  /= this.arcScaleX_ * Z;
+        height /= this.arcScaleY_ * Z;
+        var dimension = m.max(width, height);
+        shift = 2 * fillStyle.r0_ / dimension;
+        expansion = 2 * fillStyle.r1_ / dimension - shift;
+      }
+
+      // We need to sort the color stops in ascending order by offset,
+      // otherwise IE won't interpret it correctly.
+      var stops = fillStyle.colors_;
+      stops.sort(function(cs1, cs2) {
+        return cs1.offset - cs2.offset;
+      });
+
+      var length = stops.length;
+      var color1 = stops[0].color;
+      var color2 = stops[length - 1].color;
+      var opacity1 = stops[0].alpha * this.globalAlpha;
+      var opacity2 = stops[length - 1].alpha * this.globalAlpha;
+
+      var colors = [];
+      for (var i = 0; i < length; i++) {
+        var stop = stops[i];
+        colors.push(stop.offset * expansion + shift + ' ' + stop.color);
+      }
+
+      // When colors attribute is used, the meanings of opacity and o:opacity2
+      // are reversed.
+      lineStr.push('<g_vml_:fill type="', fillStyle.type_, '"',
+                   ' method="none" focus="100%"',
+                   ' color="', color1, '"',
+                   ' color2="', color2, '"',
+                   ' colors="', colors.join(','), '"',
+                   ' opacity="', opacity2, '"',
+                   ' g_o_:opacity2="', opacity1, '"',
+                   ' angle="', angle, '"',
+                   ' focusposition="', focus.x, ',', focus.y, '" />');
+    } else {
+      lineStr.push('<g_vml_:fill color="', color, '" opacity="', opacity,
+                   '" />');
+    }
+
+    lineStr.push('</g_vml_:shape>');
+
+    this.element_.insertAdjacentHTML('beforeEnd', lineStr.join(''));
+  };
+
+  contextPrototype.fill = function() {
+    this.stroke(true);
+  }
+
+  contextPrototype.closePath = function() {
+    this.currentPath_.push({type: 'close'});
+  };
+
+  /**
+   * @private
+   */
+  contextPrototype.getCoords_ = function(aX, aY) {
+    var m = this.m_;
+    return {
+      x: Z * (aX * m[0][0] + aY * m[1][0] + m[2][0]) - Z2,
+      y: Z * (aX * m[0][1] + aY * m[1][1] + m[2][1]) - Z2
+    }
+  };
+
+  contextPrototype.save = function() {
+    var o = {};
+    copyState(this, o);
+    this.aStack_.push(o);
+    this.mStack_.push(this.m_);
+    this.m_ = matrixMultiply(createMatrixIdentity(), this.m_);
+  };
+
+  contextPrototype.restore = function() {
+    copyState(this.aStack_.pop(), this);
+    this.m_ = this.mStack_.pop();
+  };
+
+  contextPrototype.translate = function(aX, aY) {
+    var m1 = [
+      [1,  0,  0],
+      [0,  1,  0],
+      [aX, aY, 1]
+    ];
+
+    this.m_ = matrixMultiply(m1, this.m_);
+  };
+
+  contextPrototype.rotate = function(aRot) {
+    var c = mc(aRot);
+    var s = ms(aRot);
+
+    var m1 = [
+      [c,  s, 0],
+      [-s, c, 0],
+      [0,  0, 1]
+    ];
+
+    this.m_ = matrixMultiply(m1, this.m_);
+  };
+
+  contextPrototype.scale = function(aX, aY) {
+    this.arcScaleX_ *= aX;
+    this.arcScaleY_ *= aY;
+    var m1 = [
+      [aX, 0,  0],
+      [0,  aY, 0],
+      [0,  0,  1]
+    ];
+
+    var m = this.m_ = matrixMultiply(m1, this.m_);
+
+    // Get the line scale.
+    // Determinant of this.m_ means how much the area is enlarged by the
+    // transformation. So its square root can be used as a scale factor
+    // for width.
+    var det = m[0][0] * m[1][1] - m[0][1] * m[1][0];
+    this.lineScale_ = sqrt(abs(det));
+  };
+
+  /******** STUBS ********/
+  contextPrototype.clip = function() {
+    // TODO: Implement
+  };
+
+  contextPrototype.arcTo = function() {
+    // TODO: Implement
+  };
+
+  contextPrototype.createPattern = function() {
+    return new CanvasPattern_;
+  };
+
+  // Gradient / Pattern Stubs
+  function CanvasGradient_(aType) {
+    this.type_ = aType;
+    this.x0_ = 0;
+    this.y0_ = 0;
+    this.r0_ = 0;
+    this.x1_ = 0;
+    this.y1_ = 0;
+    this.r1_ = 0;
+    this.colors_ = [];
+  }
+
+  CanvasGradient_.prototype.addColorStop = function(aOffset, aColor) {
+    aColor = processStyle(aColor);
+    this.colors_.push({offset: aOffset,
+                       color: aColor.color,
+                       alpha: aColor.alpha});
+  };
+
+  function CanvasPattern_() {}
+
+  // set up externs
+  G_vmlCanvasManager = G_vmlCanvasManager_;
+  CanvasRenderingContext2D = CanvasRenderingContext2D_;
+  CanvasGradient = CanvasGradient_;
+  CanvasPattern = CanvasPattern_;
+
+})();
+
+} // if

File excanvas.min.js

+if(!document.createElement("canvas").getContext){(function(){var R=Math;var S=R.round;var O=R.sin;var a=R.cos;var J=R.abs;var Y=R.sqrt;var A=10;var K=A/2;function G(){return this.context_||(this.context_=new M(this))}var Q=Array.prototype.slice;function b(c,d,e){var Z=Q.call(arguments,2);return function(){return c.apply(d,Z.concat(Q.call(arguments)))}}var H={init:function(Z){if(/MSIE/.test(navigator.userAgent)&&!window.opera){var c=Z||document;c.createElement("canvas");c.attachEvent("onreadystatechange",b(this.init_,this,c))}},init_:function(e){if(!e.namespaces.g_vml_){e.namespaces.add("g_vml_","urn:schemas-microsoft-com:vml","#default#VML")}if(!e.namespaces.g_o_){e.namespaces.add("g_o_","urn:schemas-microsoft-com:office:office","#default#VML")}if(!e.styleSheets.ex_canvas_){var d=e.createStyleSheet();d.owningElement.id="ex_canvas_";d.cssText="canvas{display:inline-block;overflow:hidden;text-align:left;width:300px;height:150px}g_vml_\\:*{behavior:url(#default#VML)}g_o_\\:*{behavior:url(#default#VML)}"}var c=e.getElementsByTagName("canvas");for(var Z=0;Z<c.length;Z++){this.initElement(c[Z])}},initElement:function(c){if(!c.getContext){c.getContext=G;c.innerHTML="";c.attachEvent("onpropertychange",X);c.attachEvent("onresize",B);var Z=c.attributes;if(Z.width&&Z.width.specified){c.style.width=Z.width.nodeValue+"px"}else{c.width=c.clientWidth}if(Z.height&&Z.height.specified){c.style.height=Z.height.nodeValue+"px"}else{c.height=c.clientHeight}}return c}};function X(c){var Z=c.srcElement;switch(c.propertyName){case"width":Z.style.width=Z.attributes.width.nodeValue+"px";Z.getContext().clearRect();break;case"height":Z.style.height=Z.attributes.height.nodeValue+"px";Z.getContext().clearRect();break}}function B(c){var Z=c.srcElement;if(Z.firstChild){Z.firstChild.style.width=Z.clientWidth+"px";Z.firstChild.style.height=Z.clientHeight+"px"}}H.init();var E=[];for(var V=0;V<16;V++){for(var U=0;U<16;U++){E[V*16+U]=V.toString(16)+U.toString(16)}}function N(){return[[1,0,0],[0,1,0],[0,0,1]]}function D(e,d){var c=N();for(var Z=0;Z<3;Z++){for(var h=0;h<3;h++){var f=0;for(var g=0;g<3;g++){f+=e[Z][g]*d[g][h]}c[Z][h]=f}}return c}function T(c,Z){Z.fillStyle=c.fillStyle;Z.lineCap=c.lineCap;Z.lineJoin=c.lineJoin;Z.lineWidth=c.lineWidth;Z.miterLimit=c.miterLimit;Z.shadowBlur=c.shadowBlur;Z.shadowColor=c.shadowColor;Z.shadowOffsetX=c.shadowOffsetX;Z.shadowOffsetY=c.shadowOffsetY;Z.strokeStyle=c.strokeStyle;Z.globalAlpha=c.globalAlpha;Z.arcScaleX_=c.arcScaleX_;Z.arcScaleY_=c.arcScaleY_;Z.lineScale_=c.lineScale_}function C(c){var f,e=1;c=String(c);if(c.substring(0,3)=="rgb"){var h=c.indexOf("(",3);var Z=c.indexOf(")",h+1);var g=c.substring(h+1,Z).split(",");f="#";for(var d=0;d<3;d++){f+=E[Number(g[d])]}if(g.length==4&&c.substr(3,1)=="a"){e=g[3]}}else{f=c}return{color:f,alpha:e}}function P(Z){switch(Z){case"butt":return"flat";case"round":return"round";case"square":default:return"square"}}function M(c){this.m_=N();this.mStack_=[];this.aStack_=[];this.currentPath_=[];this.strokeStyle="#000";this.fillStyle="#000";this.lineWidth=1;this.lineJoin="miter";this.lineCap="butt";this.miterLimit=A*1;this.globalAlpha=1;this.canvas=c;var Z=c.ownerDocument.createElement("div");Z.style.width=c.clientWidth+"px";Z.style.height=c.clientHeight+"px";Z.style.overflow="hidden";Z.style.position="absolute";c.appendChild(Z);this.element_=Z;this.arcScaleX_=1;this.arcScaleY_=1;this.lineScale_=1}var I=M.prototype;I.clearRect=function(){this.element_.innerHTML=""};I.beginPath=function(){this.currentPath_=[]};I.moveTo=function(c,Z){var d=this.getCoords_(c,Z);this.currentPath_.push({type:"moveTo",x:d.x,y:d.y});this.currentX_=d.x;this.currentY_=d.y};I.lineTo=function(c,Z){var d=this.getCoords_(c,Z);this.currentPath_.push({type:"lineTo",x:d.x,y:d.y});this.currentX_=d.x;this.currentY_=d.y};I.bezierCurveTo=function(d,c,j,i,h,f){var Z=this.getCoords_(h,f);var g=this.getCoords_(d,c);var e=this.getCoords_(j,i);L(this,g,e,Z)};function L(Z,e,d,c){Z.currentPath_.push({type:"bezierCurveTo",cp1x:e.x,cp1y:e.y,cp2x:d.x,cp2y:d.y,x:c.x,y:c.y});Z.currentX_=c.x;Z.currentY_=c.y}I.quadraticCurveTo=function(h,d,c,Z){var g=this.getCoords_(h,d);var f=this.getCoords_(c,Z);var i={x:this.currentX_+2/3*(g.x-this.currentX_),y:this.currentY_+2/3*(g.y-this.currentY_)};var e={x:i.x+(f.x-this.currentX_)/3,y:i.y+(f.y-this.currentY_)/3};L(this,i,e,f)};I.arc=function(k,i,j,f,c,d){j*=A;var o=d?"at":"wa";var l=k+a(f)*j-K;var n=i+O(f)*j-K;var Z=k+a(c)*j-K;var m=i+O(c)*j-K;if(l==Z&&!d){l+=0.125}var e=this.getCoords_(k,i);var h=this.getCoords_(l,n);var g=this.getCoords_(Z,m);this.currentPath_.push({type:o,x:e.x,y:e.y,radius:j,xStart:h.x,yStart:h.y,xEnd:g.x,yEnd:g.y})};I.rect=function(d,c,Z,e){this.moveTo(d,c);this.lineTo(d+Z,c);this.lineTo(d+Z,c+e);this.lineTo(d,c+e);this.closePath()};I.strokeRect=function(d,c,Z,e){var f=this.currentPath_;this.beginPath();this.moveTo(d,c);this.lineTo(d+Z,c);this.lineTo(d+Z,c+e);this.lineTo(d,c+e);this.closePath();this.stroke();this.currentPath_=f};I.fillRect=function(d,c,Z,e){var f=this.currentPath_;this.beginPath();this.moveTo(d,c);this.lineTo(d+Z,c);this.lineTo(d+Z,c+e);this.lineTo(d,c+e);this.closePath();this.fill();this.currentPath_=f};I.createLinearGradient=function(c,e,Z,d){var f=new W("gradient");f.x0_=c;f.y0_=e;f.x1_=Z;f.y1_=d;return f};I.createRadialGradient=function(e,g,d,c,f,Z){var h=new W("gradientradial");h.x0_=e;h.y0_=g;h.r0_=d;h.x1_=c;h.y1_=f;h.r1_=Z;return h};I.drawImage=function(s,e){var l,j,n,AA,q,o,u,AC;var m=s.runtimeStyle.width;var r=s.runtimeStyle.height;s.runtimeStyle.width="auto";s.runtimeStyle.height="auto";var k=s.width;var y=s.height;s.runtimeStyle.width=m;s.runtimeStyle.height=r;if(arguments.length==3){l=arguments[1];j=arguments[2];q=o=0;u=n=k;AC=AA=y}else{if(arguments.length==5){l=arguments[1];j=arguments[2];n=arguments[3];AA=arguments[4];q=o=0;u=k;AC=y}else{if(arguments.length==9){q=arguments[1];o=arguments[2];u=arguments[3];AC=arguments[4];l=arguments[5];j=arguments[6];n=arguments[7];AA=arguments[8]}else{throw Error("Invalid number of arguments")}}}var AB=this.getCoords_(l,j);var f=u/2;var c=AC/2;var z=[];var Z=10;var i=10;z.push(" <g_vml_:group",' coordsize="',A*Z,",",A*i,'"',' coordorigin="0,0"',' style="width:',Z,"px;height:",i,"px;position:absolute;");if(this.m_[0][0]!=1||this.m_[0][1]){var g=[];g.push("M11=",this.m_[0][0],",","M12=",this.m_[1][0],",","M21=",this.m_[0][1],",","M22=",this.m_[1][1],",","Dx=",S(AB.x/A),",","Dy=",S(AB.y/A),"");var x=AB;var v=this.getCoords_(l+n,j);var t=this.getCoords_(l,j+AA);var p=this.getCoords_(l+n,j+AA);x.x=R.max(x.x,v.x,t.x,p.x);x.y=R.max(x.y,v.y,t.y,p.y);z.push("padding:0 ",S(x.x/A),"px ",S(x.y/A),"px 0;filter:progid:DXImageTransform.Microsoft.Matrix(",g.join(""),", sizingmethod='clip');")}else{z.push("top:",S(AB.y/A),"px;left:",S(AB.x/A),"px;")}z.push(' ">','<g_vml_:image src="',s.src,'"',' style="width:',A*n,"px;"," height:",A*AA,'px;"',' cropleft="',q/k,'"',' croptop="',o/y,'"',' cropright="',(k-q-u)/k,'"',' cropbottom="',(y-o-AC)/y,'"'," />","</g_vml_:group>");this.element_.insertAdjacentHTML("BeforeEnd",z.join(""))};I.stroke=function(AE){var j=[];var k=false;var AP=C(AE?this.fillStyle:this.strokeStyle);var AA=AP.color;var AK=AP.alpha*this.globalAlpha;var f=10;var m=10;j.push("<g_vml_:shape",' filled="',!!AE,'"',' style="position:absolute;width:',f,"px;height:",m,'px;"',' coordorigin="0 0" coordsize="',A*f," ",A*m,'"',' stroked="',!AE,'"',' path="');var l=false;var AO={x:null,y:null};var w={x:null,y:null};for(var AJ=0;AJ<this.currentPath_.length;AJ++){var AI=this.currentPath_[AJ];var AN;switch(AI.type){case"moveTo":AN=AI;j.push(" m ",S(AI.x),",",S(AI.y));break;case"lineTo":j.push(" l ",S(AI.x),",",S(AI.y));break;case"close":j.push(" x ");AI=null;break;case"bezierCurveTo":j.push(" c ",S(AI.cp1x),",",S(AI.cp1y),",",S(AI.cp2x),",",S(AI.cp2y),",",S(AI.x),",",S(AI.y));break;case"at":case"wa":j.push(" ",AI.type," ",S(AI.x-this.arcScaleX_*AI.radius),",",S(AI.y-this.arcScaleY_*AI.radius)," ",S(AI.x+this.arcScaleX_*AI.radius),",",S(AI.y+this.arcScaleY_*AI.radius)," ",S(AI.xStart),",",S(AI.yStart)," ",S(AI.xEnd),",",S(AI.yEnd));break}if(AI){if(AO.x==null||AI.x<AO.x){AO.x=AI.x}if(w.x==null||AI.x>w.x){w.x=AI.x}if(AO.y==null||AI.y<AO.y){AO.y=AI.y}if(w.y==null||AI.y>w.y){w.y=AI.y}}}j.push(' ">');if(!AE){var v=this.lineScale_*this.lineWidth;if(v<1){AK*=v}j.push("<g_vml_:stroke",' opacity="',AK,'"',' joinstyle="',this.lineJoin,'"',' miterlimit="',this.miterLimit,'"',' endcap="',P(this.lineCap),'"',' 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color2="',x,'"',' colors="',AF.join(","),'"',' opacity="',AC,'"',' g_o_:opacity2="',AD,'"',' angle="',t,'"',' focusposition="',AH.x,",",AH.y,'" />')}else{j.push('<g_vml_:fill color="',AA,'" opacity="',AK,'" />')}}j.push("</g_vml_:shape>");this.element_.insertAdjacentHTML("beforeEnd",j.join(""))};I.fill=function(){this.stroke(true)};I.closePath=function(){this.currentPath_.push({type:"close"})};I.getCoords_=function(d,c){var Z=this.m_;return{x:A*(d*Z[0][0]+c*Z[1][0]+Z[2][0])-K,y:A*(d*Z[0][1]+c*Z[1][1]+Z[2][1])-K}};I.save=function(){var Z={};T(this,Z);this.aStack_.push(Z);this.mStack_.push(this.m_);this.m_=D(N(),this.m_)};I.restore=function(){T(this.aStack_.pop(),this);this.m_=this.mStack_.pop()};I.translate=function(d,c){var Z=[[1,0,0],[0,1,0],[d,c,1]];this.m_=D(Z,this.m_)};I.rotate=function(d){var f=a(d);var e=O(d);var Z=[[f,e,0],[-e,f,0],[0,0,1]];this.m_=D(Z,this.m_)};I.scale=function(f,e){this.arcScaleX_*=f;this.arcScaleY_*=e;var c=[[f,0,0],[0,e,0],[0,0,1]];var Z=this.m_=D(c,this.m_);var d=Z[0][0]*Z[1][1]-Z[0][1]*Z[1][0];this.lineScale_=Y(J(d))};I.clip=function(){};I.arcTo=function(){};I.createPattern=function(){return new F};function W(Z){this.type_=Z;this.x0_=0;this.y0_=0;this.r0_=0;this.x1_=0;this.y1_=0;this.r1_=0;this.colors_=[]}W.prototype.addColorStop=function(c,Z){Z=C(Z);this.colors_.push({offset:c,color:Z.color,alpha:Z.alpha})};function F(){}G_vmlCanvasManager=H;CanvasRenderingContext2D=M;CanvasGradient=W;CanvasPattern=F})()};
+(function($) {
+    $._jqPlot = function() {
+        // user's data.  Should be in the form of
+        // [ [[x1, y1], [x2, y2],...], [[x1, y1], [x2, y2], ...] ] or
+        // [{ data:[[x1, y1], [x2, y2],...], other_options...}, { data:[[x1, y1], [x2, y2],...], other_options...} ]
+        this.data = [];
+        // the id of the dom element to render the plot into
+        this.targetId = null;
+        // the jquery object for the dom target.
+        this.target = null;
+        // the defaults merged with the options the user passed into us.
+        this.options = null;
+    
+        // default options object to be overridden by user.
+        this.defaults = {
+            pointsDefaults: {show:true, renderer:'circleRenderer', transform:null},
+            points:[],
+            axesDefaults: {show:true, margin:0.1, numberTicks:null, tickInterval:null, renderer:'linearAxisRenderer', transform:null,
+                label:{text:null, font:null, align:null},
+                tickLabel:{formatString:null, font:null, align:null},
+                ticks:null
+            },
+            axes:{xaxis:{}, yaxis:{}, x2axis:{show:false}, y2axis:{show:false}},
+            grid:{gridLines:{}, background:{}, border:{}},
+            title: { text:null, font:null, align:null},
+            seriesDefaults: {show:true, xaxis:'xaxis', yaxis:'yaxis', renderer:'lineRenderer', transform:null},
+            series:[]
+        };
+    
+        // properties for the individual data series
+        this.series = [];
+        // the actual grid coordinates that will be plotted (in scaled grid coordinates)
+        this.gridData = [];
+        // properties for points of individual data series
+        this.points = [];
+        // properties for axes
+        this.axes = {};
+        this.grid = {};
+        // handle to the grid canvas drawing context.  Holds the axes, grid, and labels.
+        // Stuff that should be rendered only at initial plot drawing.
+        this.gctx = null;
+        // handle to the series  canvas drawing context.  Holds the rendered
+        // rendered series which may be manipulated through user interaction.
+        this.sctx = null;
+        // handle to the overlay canvas drawing object.  Holds interactive content
+        // like highlights that are rendered according to user interaction
+        this.octx = null;
+        // width and height of the canvas
+        this.width = null;
+        this.height = null;
+        this.gridOffset = null;
+        // max and min x and y
+        this.dataBounds={xaxis:{min:null, max:null}, yaxis:{min:null, max:null}, x2axis:{min:null, max:null}, y2axis:{min:null, max:null}};
+        
+            
+        this.init = function(target, data, options) {
+            this.targetId = target;
+            this.target = $(target);
+            if (!this.target) throw "No plot target specified";
+            this.height = this.target.css('height');
+            this.width = this.target.css('width');
+            if (this.height <=0 || this.width <=0) throw "Canvas dimensions <=0";
+            // get a handle to the plot object from the target to help with events.
+            $(target).data('jqplot', this);
+            this.data = data;
+            if (data.length < 1 || data[0].length < 2) throw "Invalid Plot data";
+            this.parseOptions(options);
+            
+            // compute the min and max x and y values for each axes
+            var db = this.dataBounds;
+            
+            for (var i=0; i<data.length; i++) {
+                var d=data[i];
+                var dbx = this.series[i].xaxis;
+                var dby = this.series[i].yaxis;
+                if (db[dbx].min == null) db[dbx].min = d[0][0];
+                if (db[dbx].max == null) db[dbx].max = d[0][0];
+                if (db[dby].min == null) db[dby].min = d[0][1];
+                if (db[dby].max == null) db[dby].max = d[0][1];
+                for (var j=0; j<d.length; j++) {
+                    if (d[j][0] < db[dbx].min) db[dbx].min = d[j][0];
+                    else if (d[j][0] > db[dbx].max) db[dbx].max = d[j][0];
+                    if (d[j][1] < db[dby].min) db[dby].min = d[j][1];
+                    else if (d[j][1] > db[dby].max) db[dby].max = d[j][1];
+                }
+            }
+            
+            this.processData();
+        }
+    
+        // parse the user supplied options and override defaults, then
+        // populate the instance properties
+        this.parseOptions = function(){
+            this.options = $.extend(true, {}, this.defaults, options);
+            for (var axis in this.axes) {
+                this.axes[axis] = $.extend(true, {}, this.options.axesDefaults, this.options.axes[axis]);
+            }
+            
+            for (var i=0; i<this.data.length; i++) {
+                var temp = $.extend(true, {}, this.options.seriesDefaults, this.options.series[i]);
+                this.series.push(temp);
+            }
+            
+            for (var i=0; i<this.data.length; i++) {
+                var temp = $.extend(true, {}, this.options.pointsDefaults, this.options.points[i]);
+                this.points.push(temp);
+            }
+            
+            for (var opt in ['grid', 'title']) {
+                this[opt] = $.extend(true, {}, this.options[opt]);
+            }
+        };
+    
+        // populate the gridData array with any necessary transformations
+        this.processData = function(){
+            // actually rather involved.
+            // have to figure out:
+            // overall size of canvas
+            // space for axes labels, axes ticks, title, maybe grid border
+            // (will it be inside, outside, or half&half on grid?)
+            //
+            // Then, figure out size of plotting area and offset from
+            // top left of canvas.
+            // then, tranform data points to plotting area coordinates
+            // and ultimately transform that back to top left grid coordinates.
+            
+        };
+    
+        // determine xmax, xmin, ymax, ymin for each series
+        this.getDataRange = function(){};
+    
+        // calculate tick spacing;
+        this.setAxis = function(name) {
+            // if a ticks array is specified, use it.
+            var axis = this.axes[name];
+            var db = this.dataBounds[name];
+            if (axis.ticks.constructor == Array) {
+                var temp = $.extend(true, [], axis.ticks);
+                axis.ticks = {labels:[], values:[]};
+                // if 2-D array, match them up
+                if (temp[0].lenth) {
+                    for (var i=0; i< temp; i++) {
+                        axis.ticks.labels.push(temp[i][1].toString());
+                        axis.ticks.values.push(parseFloat(temp[i][0]));
+                    }
+                }
+                // else 1-D array
+                else {
+                    for (var i=0; i< temp; i++) {
+                        axis.ticks.labels.push(temp[i].toString());
+                        axis.ticks.values.push(parseFloat(temp[i]));
+                    }
+                }
+            }
+            // else call the axis renderer
+            else this[this.axes[name].renderer].call(this, name);
+        };
+        
+        
+        this.linearAxisRenderer = function(name){
+            var axis = this.axes[name];
+            var db = this.dataBounds[name];
+            var dim, interval;
+            if (name == 'xaxis' || name == 'x2axis') dim = this.width;
+            else dim = this.height;
+            if (dim > 100) {
+                axis.numberTicks = parseInt(2+(dim-100)/50);
+            }
+            else axis.numberTicks = 2;
+            
+            var range = (db.max - db.min)*(1+2*axis.margin);
+            var rdbmin = db.min - range*axis.margin;
+            var rdbmax = db.max - range*axis.margin;
+            axis.tickInterval = range/axis.numberTicks;
+            for (var i=0; i<axis.numberTicks; i++){
+                axis.ticks.labels.push((rdbmin + i*axis.tickInterval).toString());
+                axis.ticks.values.push(rdbmin + i*axis.tickInterval);
+            }
+        };
+    
+        // create the plot and add it do the dom
+        this.draw = function(){};
+    
+        // Add the canvas element to the DOM
+        this.insertCanvas = function(){};
+    
+        this.drawTitle = function(){};
+    
+        this.drawAxes = function(){
+            var offsets;
+            for (var axis in this.axes) {
+                // axis labels not supported yet
+                // offsets = this.drawAxisLabel(axis);
+                offsets = [0,0];
+                this.drawAxisTicks(axis);
+            }
+        };
+        
+        this.drawAxisLabel = function(axis) {};
+        
+        this.drawAxisTicks = function(axis) {
+            
+            
+        };
+    
+        this.drawGrid = function(){};
+    
+        this.drawSeries = function(){};
+    
+        this.drawPoints = function(){};
+    
+        this.lineRenderer = function(){};   
+    
+        this.lineColors = ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"];
+    
+        this.colorMap = {
+            aqua:[0,255,255],
+            azure:[240,255,255],
+            beige:[245,245,220],
+            black:[0,0,0],
+            blue:[0,0,255],
+            brown:[165,42,42],
+            cyan:[0,255,255],
+            darkblue:[0,0,139],
+            darkcyan:[0,139,139],
+            darkgrey:[169,169,169],
+            darkgreen:[0,100,0],
+            darkkhaki:[189,183,107],
+            darkmagenta:[139,0,139],
+            darkolivegreen:[85,107,47],
+            darkorange:[255,140,0],
+            darkorchid:[153,50,204],
+            darkred:[139,0,0],
+            darksalmon:[233,150,122],
+            darkviolet:[148,0,211],
+            fuchsia:[255,0,255],
+            gold:[255,215,0],
+            green:[0,128,0],
+            indigo:[75,0,130],
+            khaki:[240,230,140],
+            lightblue:[173,216,230],
+            lightcyan:[224,255,255],
+            lightgreen:[144,238,144],
+            lightgrey:[211,211,211],
+            lightpink:[255,182,193],
+            lightyellow:[255,255,224],
+            lime:[0,255,0],
+            magenta:[255,0,255],
+            maroon:[128,0,0],
+            navy:[0,0,128],
+            olive:[128,128,0],
+            orange:[255,165,0],
+            pink:[255,192,203],
+            purple:[128,0,128],
+            violet:[128,0,128],
+            red:[255,0,0],
+            silver:[192,192,192],
+            white:[255,255,255],
+            yellow:[255,255,0]
+        }; 
+    };
+    
+    $.jqplot = function(target, data, options) {
+        var plot = new $._jqPlot();
+        plot.init(target, data, options);
+        plot.draw();
+        return plot;
+    };
+    
+    /**
+     * From "JavaScript: the Definitive Guide, by David Flanagan. Copyright 2006 O'Reilly Media, Inc."
+     * 
+     * make(tagname, attributes, children):
+     *   create an HTML element with specified tagname, attributes and children.
+     * 
+     * The attributes argument is a JavaScript object: the names and values of its
+     * properties are taken as the names and values of the attributes to set.
+     * If attributes is null, and children is an array or a string, the attributes 
+     * can be omitted altogether and the children passed as the second argument. 
+     *
+     * The children argument is normally an array of children to be added to 
+     * the created element.  If there are no children, this argument can be 
+     * omitted.  If there is only a single child, it can be passed directly 
+     * instead of being enclosed in an array. (But if the child is not a string
+     * and no attributes are specified, an array must be used.)
+     * 
+     * Example: make("p", ["This is a ", make("b", "bold"), " word."]);
+     *
+     * Inspired by the MochiKit library (http://mochikit.com) by Bob Ippolito
+     */
+    function make(tagname, attributes, children) {
+    
+        // If we were invoked with two arguments the attributes argument is
+        // an array or string, it should really be the children arguments.
+        if (arguments.length == 2 && 
+            (attributes instanceof Array || typeof attributes == "string")) {
+            children = attributes;
+            attributes = null;
+        }
+
+        // Create the element
+        var e = document.createElement(tagname);
+
+        // Set attributes
+        if (attributes) {
+            for(var name in attributes) e.setAttribute(name, attributes[name]);
+        }
+
+        // Add children, if any were specified.
+        if (children != null) {
+            if (children instanceof Array) {  // If it really is an array
+                for(var i = 0; i < children.length; i++) { // Loop through kids
+                    var child = children[i];
+                    if (typeof child == "string")          // Handle text nodes
+                        child = document.createTextNode(child);
+                    e.appendChild(child);  // Assume anything else is a Node
+                }
+            }
+            else if (typeof children == "string") // Handle single text child
+                e.appendChild(document.createTextNode(children));
+            else e.appendChild(children);         // Handle any other single child
+        }
+
+        // Finally, return the element.
+        return e;
+    }
+
+    /**
+     * From "JavaScript: the Definitive Guide, by David Flanagan. Copyright 2006 O'Reilly Media, Inc."
+     * 
+     * maker(tagname): return a function that calls make() for the specified tag.
+     * Example: var table = maker("table"), tr = maker("tr"), td = maker("td");
+     */
+    function maker(tag) {
+        return function(attrs, kids) {
+            if (arguments.length == 1) return make(tag, attrs);
+            else return make(tag, attrs, kids);
+        }
+    }
+    
+})(jQuery);
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+ <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <script language="javascript" type="text/javascript" src="../jquery-1.3.2.js"></script>
+    <script language="javascript" type="text/javascript" src="test.js"></script>
+ </head>
+    <body>
+	<p>Tempus imporum littus</p>
+	<div id="chartdiv" style="height:400px;width:600px;margin:20px;padding:10px;border:5px solid gray;display:none;"></div>
+	<p id="output">Nothing here</p>
+	<div id="t2" style="width:400">Forded norad grosub</div>
+	<p id="out2">Nothing here</p>
+</body></html>
+$(document).ready(function(){
+    h0 = $("#chartdiv").css('height');
+    h2 = $("#chartdiv").outerHeight();
+    h3 = $("#chartdiv").outerHeight(true);
+    h1 = $("#chartdiv").innerHeight();
+    $("#output").html("css('height') is:" +h0+"<br>innerHeight() is: "+h1+"<br>outerHeight() is: "+h2+"<br>outerHeight(true) is: "+h3);
+    h0 = $("#t2").css('height');
+    h2 = $("#t2").outerHeight();
+    h3 = $("#t2").outerHeight(true);
+    h1 = $("#t2").innerHeight();
+    $("#out2").html("css('height') is:" +h0+"<br>innerHeight() is: "+h1+"<br>outerHeight() is: "+h2+"<br>outerHeight(true) is: "+h3);
+});