text: /**
   * Copyright (c) 2006-2015, JGraph Ltd
   * Copyright (c) 2006-2015, Gaudenz Alder
   */
  
  import mxClient from '../mx_client';
  import mxUtils from './mx_utils';
  import mxAbstractCanvas2D from './mx_abstract_canvas_2d';
  
  /**
   *
   * Class: mxVmlCanvas2D
   * 
   * Implements a canvas to be used for rendering VML. Here is an example of implementing a
   * fallback for SVG images which are not supported in VML-based browsers.
   * 
   * (code)
   * var mxVmlCanvas2DImage = mxVmlCanvas2D.prototype.image;
   * mxVmlCanvas2D.prototype.image = function(x, y, w, h, src, aspect, flipH, flipV)
   * {
   *   if (src.substring(src.length - 4, src.length) == '.svg')
   *   {
   *     src = 'http://www.jgraph.com/images/mxgraph.gif';
   *   }
   *   
   *   mxVmlCanvas2DImage.apply(this, arguments);
   * };
   * (end)
   * 
   * To disable anti-aliasing in the output, use the following code.
   * 
   * (code)
   * document.createStyleSheet().cssText = mxClient.VML_PREFIX + '\\:*{antialias:false;)}';
   * (end)
   * 
   * A description of the public API is available in <mxXmlCanvas2D>. Note that
   * there is a known issue in VML where gradients are painted using the outer
   * bounding box of rotated shapes, not the actual bounds of the shape. See
   * also <text> for plain text label restrictions in shapes for VML.
   */
  var mxVmlCanvas2D = function(root)
  {
  	mxAbstractCanvas2D.call(this);
  
  	/**
  	 * Variable: root
  	 * 
  	 * Reference to the container for the SVG content.
  	 */
  	this.root = root;
  };
  
  /**
   * Extends mxAbstractCanvas2D
   */
  mxUtils.extend(mxVmlCanvas2D, mxAbstractCanvas2D);
  
  /**
   * Variable: path
   * 
   * Holds the current DOM node.
   */
  mxVmlCanvas2D.prototype.node = null;
  
  /**
   * Variable: textEnabled
   * 
   * Specifies if text output should be enabledetB. Default is true.
   */
  mxVmlCanvas2D.prototype.textEnabled = true;
  
  /**
   * Variable: moveOp
   * 
   * Contains the string used for moving in paths. Default is 'm'.
   */
  mxVmlCanvas2D.prototype.moveOp = 'm';
  
  /**
   * Variable: lineOp
   * 
   * Contains the string used for moving in paths. Default is 'l'.
   */
  mxVmlCanvas2D.prototype.lineOp = 'l';
  
  /**
   * Variable: curveOp
   * 
   * Contains the string used for bezier curves. Default is 'c'.
   */
  mxVmlCanvas2D.prototype.curveOp = 'c';
  
  /**
   * Variable: closeOp
   * 
   * Holds the operator for closing curves. Default is 'x e'.
   */
  mxVmlCanvas2D.prototype.closeOp = 'x';
  
  /**
   * Variable: rotatedHtmlBackground
   * 
   * Background color for rotated HTML. Default is ''. This can be set to eg.
   * white to improve rendering of rotated text in VML for IE9.
   */
  mxVmlCanvas2D.prototype.rotatedHtmlBackground = '';
  
  /**
   * Variable: vmlScale
   * 
   * Specifies the scale used to draw VML shapes.
   */
  mxVmlCanvas2D.prototype.vmlScale = 1;
  
  /**
   * Function: createElement
   * 
   * Creates the given element using the document.
   */
  mxVmlCanvas2D.prototype.createElement = function(name)
  {
  	return document.createElement(name);
  };
  
  /**
   * Function: createVmlElement
   * 
   * Creates a new element using <createElement> and prefixes the given name with
   * <mxClient.VML_PREFIX>.
   */
  mxVmlCanvas2D.prototype.createVmlElement = function(name)
  {
  	return this.createElement(mxClient.VML_PREFIX + ':' + name);
  };
  
  /**
   * Function: addNode
   * 
   * Adds the current node to the <root>.
   */
  mxVmlCanvas2D.prototype.addNode = function(filled, stroked)
  {
  	var node = this.node;
  	var s = this.state;
  	
  	if (node != null)
  	{
  		if (node.nodeName == 'shape')
  		{
  			// Checks if the path is not empty
  			if (this.path != null && this.path.length > 0)
  			{
  				node.path = this.path.join(' ') + ' e';
  				node.style.width = this.root.style.width;
  				node.style.height = this.root.style.height;
  				node.coordsize = parseInt(node.style.width) + ' ' + parseInt(node.style.height);
  			}
  			else
  			{
  				return;
  			}
  		}
  
  		node.strokeweight = this.format(Math.max(1, s.strokeWidth * s.scale / this.vmlScale)) + 'px';
  		
  		if (s.shadow)
  		{
  			this.root.appendChild(this.createShadow(node,
  				filled && s.fillColor != null,
  				stroked && s.strokeColor != null));
  		}
  		
  		if (stroked && s.strokeColor != null)
  		{
  			node.stroked = 'true';
  			node.strokecolor = s.strokeColor;
  		}
  		else
  		{
  			node.stroked = 'false';
  		}
  
  		node.appendChild(this.createStroke());
  
  		if (filled && s.fillColor != null)
  		{
  			node.appendChild(this.createFill());
  		}
  		else if (this.pointerEvents && (node.nodeName != 'shape' ||
  			this.path[this.path.length - 1] == this.closeOp))
  		{
  			node.appendChild(this.createTransparentFill());
  		}
  		else
  		{
  			node.filled = 'false';
  		}
  
  		// LATER: Update existing DOM for performance
  		this.root.appendChild(node);
  	}
  };
  
  /**
   * Function: createTransparentFill
   * 
   * Creates a transparent fill.
   */
  mxVmlCanvas2D.prototype.createTransparentFill = function()
  {
  	var fill = this.createVmlElement('fill');
  	fill.src = mxClient.imageBasePath + '/transparent.gif';
  	fill.type = 'tile';
  	
  	return fill;
  };
  
  /**
   * Function: createFill
   * 
   * Creates a fill for the current state.
   */
  mxVmlCanvas2D.prototype.createFill = function()
  {
  	var s = this.state;
  	
  	// Gradients in foregrounds not supported because special gradients
  	// with bounds must be created for each element in graphics-canvases
  	var fill = this.createVmlElement('fill');
  	fill.color = s.fillColor;
  
  	if (s.gradientColor != null)
  	{
  		fill.type = 'gradient';
  		fill.method = 'none';
  		fill.color2 = s.gradientColor;
  		var angle = 180 - s.rotation;
  		
  		if (s.gradientDirection == mxConstants.DIRECTION_WEST)
  		{
  			angle -= 90 + ((this.root.style.flip == 'x') ? 180 : 0);
  		}
  		else if (s.gradientDirection == mxConstants.DIRECTION_EAST)
  		{
  			angle += 90 + ((this.root.style.flip == 'x') ? 180 : 0);
  		}
  		else if (s.gradientDirection == mxConstants.DIRECTION_NORTH)
  		{
  			angle -= 180 + ((this.root.style.flip == 'y') ? -180 : 0);
  		}
  		else
  		{
  			 angle += ((this.root.style.flip == 'y') ? -180 : 0);
  		}
  		
  		if (this.root.style.flip == 'x' || this.root.style.flip == 'y')
  		{
  			angle *= -1;
  		}
  
  		// LATER: Fix outer bounding box for rotated shapes used in VML.
  		fill.angle = mxUtils.mod(angle, 360);
  		fill.opacity = (s.alpha * s.gradientFillAlpha * 100) + '%';
  		fill.setAttribute(mxClient.OFFICE_PREFIX + ':opacity2', (s.alpha * s.gradientAlpha * 100) + '%');
  	}
  	else if (s.alpha < 1 || s.fillAlpha < 1)
  	{
  		fill.opacity = (s.alpha * s.fillAlpha * 100) + '%';			
  	}
  	
  	return fill;
  };
  /**
   * Function: createStroke
   * 
   * Creates a fill for the current state.
   */
  mxVmlCanvas2D.prototype.createStroke = function()
  {
  	var s = this.state;
  	var stroke = this.createVmlElement('stroke');
  	stroke.endcap = s.lineCap || 'flat';
  	stroke.joinstyle = s.lineJoin || 'miter';
  	stroke.miterlimit = s.miterLimit || '10';
  	
  	if (s.alpha < 1 || s.strokeAlpha < 1)
  	{
  		stroke.opacity = (s.alpha * s.strokeAlpha * 100) + '%';
  	}
  	
  	if (s.dashed)
  	{
  		stroke.dashstyle = this.getVmlDashStyle();
  	}
  	
  	return stroke;
  };
  
  /**
   * Function: getVmlDashPattern
   * 
   * Returns a VML dash pattern for the current dashPattern.
   * See http://msdn.microsoft.com/en-us/library/bb264085(v=vs.85).aspx
   */
  mxVmlCanvas2D.prototype.getVmlDashStyle = function()
  {
  	var result = 'dash';
  	
  	if (typeof(this.state.dashPattern) === 'string')
  	{
  		var tok = this.state.dashPattern.split(' ');
  		
  		if (tok.length > 0 && tok[0] == 1)
  		{
  			result = '0 2';
  		}
  	}
  	
  	return result;
  };
  
  /**
   * Function: createShadow
   * 
   * Creates a shadow for the given node.
   */
  mxVmlCanvas2D.prototype.createShadow = function(node, filled, stroked)
  {
  	var s = this.state;
  	var rad = -s.rotation * (Math.PI / 180);
  	var cos = Math.cos(rad);
  	var sin = Math.sin(rad);
  
  	var dx = s.shadowDx * s.scale;
  	var dy = s.shadowDy * s.scale;
  
  	if (this.root.style.flip == 'x')
  	{
  		dx *= -1;
  	}
  	else if (this.root.style.flip == 'y')
  	{
  		dy *= -1;
  	}
  	
  	var shadow = node.cloneNode(true);
  	shadow.style.marginLeft = Math.round(dx * cos - dy * sin) + 'px';
  	shadow.style.marginTop = Math.round(dx * sin + dy * cos) + 'px';
  
  	// Workaround for wrong cloning in IE8 standards mode
  	if (document.documentMode == 8)
  	{
  		shadow.strokeweight = node.strokeweight;
  		
  		if (node.nodeName == 'shape')
  		{
  			shadow.path = this.path.join(' ') + ' e';
  			shadow.style.width = this.root.style.width;
  			shadow.style.height = this.root.style.height;
  			shadow.coordsize = parseInt(node.style.width) + ' ' + parseInt(node.style.height);
  		}
  	}
  	
  	if (stroked)
  	{
  		shadow.strokecolor = s.shadowColor;
  		shadow.appendChild(this.createShadowStroke());
  	}
  	else
  	{
  		shadow.stroked = 'false';
  	}
  	
  	if (filled)
  	{
  		shadow.appendChild(this.createShadowFill());
  	}
  	else
  	{
  		shadow.filled = 'false';
  	}
  	
  	return shadow;
  };
  
  /**
   * Function: createShadowFill
   * 
   * Creates the fill for the shadow.
   */
  mxVmlCanvas2D.prototype.createShadowFill = function()
  {
  	var fill = this.createVmlElement('fill');
  	fill.color = this.state.shadowColor;
  	fill.opacity = (this.state.alpha * this.state.shadowAlpha * 100) + '%';
  	
  	return fill;
  };
  
  /**
   * Function: createShadowStroke
   * 
   * Creates the stroke for the shadow.
   */
  mxVmlCanvas2D.prototype.createShadowStroke = function()
  {
  	var stroke = this.createStroke();
  	stroke.opacity = (this.state.alpha * this.state.shadowAlpha * 100) + '%';
  	
  	return stroke;
  };
  
  /**
   * Function: rotate
   * 
   * Sets the rotation of the canvas. Note that rotation cannot be concatenated.
   */
  mxVmlCanvas2D.prototype.rotate = function(theta, flipH, flipV, cx, cy)
  {
  	if (flipH && flipV)
  	{
  		theta += 180;
  	}
  	else if (flipH)
  	{
  		this.root.style.flip = 'x';
  	}
  	else if (flipV)
  	{
  		this.root.style.flip = 'y';
  	}
  
  	if (flipH ? !flipV : flipV)
  	{
  		theta *= -1;
  	}
  
  	this.root.style.rotation = theta;
  	this.state.rotation = this.state.rotation + theta;
  	this.state.rotationCx = cx;
  	this.state.rotationCy = cy;
  };
  
  /**
   * Function: begin
   * 
   * Extends superclass to create path.
   */
  mxVmlCanvas2D.prototype.begin = function()
  {
  	mxAbstractCanvas2D.prototype.begin.apply(this, arguments);
  	this.node = this.createVmlElement('shape');
  	this.node.style.position = 'absolute';
  };
  
  /**
   * Function: quadTo
   * 
   * Replaces quadratic curve with bezier curve in VML.
   */
  mxVmlCanvas2D.prototype.quadTo = function(x1, y1, x2, y2)
  {
  	var s = this.state;
  
  	var cpx0 = (this.lastX + s.dx) * s.scale;
  	var cpy0 = (this.lastY + s.dy) * s.scale;
  	var qpx1 = (x1 + s.dx) * s.scale;
  	var qpy1 = (y1 + s.dy) * s.scale;
  	var cpx3 = (x2 + s.dx) * s.scale;
  	var cpy3 = (y2 + s.dy) * s.scale;
  	
  	var cpx1 = cpx0 + 2/3 * (qpx1 - cpx0);
  	var cpy1 = cpy0 + 2/3 * (qpy1 - cpy0);
  	
  	var cpx2 = cpx3 + 2/3 * (qpx1 - cpx3);
  	var cpy2 = cpy3 + 2/3 * (qpy1 - cpy3);
  	
  	this.path.push('c ' + this.format(cpx1) + ' ' + this.format(cpy1) +
  			' ' + this.format(cpx2) + ' ' + this.format(cpy2) +
  			' ' + this.format(cpx3) + ' ' + this.format(cpy3));
  	this.lastX = (cpx3 / s.scale) - s.dx;
  	this.lastY = (cpy3 / s.scale) - s.dy;
  	
  };
  
  /**
   * Function: createRect
   * 
   * Sets the glass gradient.
   */
  mxVmlCanvas2D.prototype.createRect = function(nodeName, x, y, w, h)
  {
  	var s = this.state;
  	var n = this.createVmlElement(nodeName);
  	n.style.position = 'absolute';
  	n.style.left = this.format((x + s.dx) * s.scale) + 'px';
  	n.style.top = this.format((y + s.dy) * s.scale) + 'px';
  	n.style.width = this.format(w * s.scale) + 'px';
  	n.style.height = this.format(h * s.scale) + 'px';
  	
  	return n;
  };
  
  /**
   * Function: rect
   * 
   * Sets the current path to a rectangle.
   */
  mxVmlCanvas2D.prototype.rect = function(x, y, w, h)
  {
  	this.node = this.createRect('rect', x, y, w, h);
  };
  
  /**
   * Function: roundrect
   * 
   * Sets the current path to a rounded rectangle.
   */
  mxVmlCanvas2D.prototype.roundrect = function(x, y, w, h, dx, dy)
  {
  	this.node = this.createRect('roundrect', x, y, w, h);
  	// SetAttribute needed here for IE8
  	this.node.setAttribute('arcsize', Math.max(dx * 100 / w, dy * 100 / h) + '%');
  };
  
  /**
   * Function: ellipse
   * 
   * Sets the current path to an ellipse.
   */
  mxVmlCanvas2D.prototype.ellipse = function(x, y, w, h)
  {
  	this.node = this.createRect('oval', x, y, w, h);
  };
  
  /**
   * Function: image
   * 
   * Paints an image.
   */
  mxVmlCanvas2D.prototype.image = function(x, y, w, h, src, aspect, flipH, flipV)
  {
  	var node = null;
  	
  	if (!aspect)
  	{
  		node = this.createRect('image', x, y, w, h);
  		node.src = src;
  	}
  	else
  	{
  		// Uses fill with aspect to avoid asynchronous update of size
  		node = this.createRect('rect', x, y, w, h);
  		node.stroked = 'false';
  		
  		// Handles image aspect via fill
  		var fill = this.createVmlElement('fill');
  		fill.aspect = (aspect) ? 'atmost' : 'ignore';
  		fill.rotate = 'true';
  		fill.type = 'frame';
  		fill.src = src;
  
  		node.appendChild(fill);
  	}
  	
  	if (flipH && flipV)
  	{
  		node.style.rotation = '180';
  	}
  	else if (flipH)
  	{
  		node.style.flip = 'x';
  	}
  	else if (flipV)
  	{
  		node.style.flip = 'y';
  	}
  	
  	if (this.state.alpha < 1 || this.state.fillAlpha < 1)
  	{
  		// KNOWN: Borders around transparent images in IE<9. Using fill.opacity
  		// fixes this problem by adding a white background in all IE versions.
  		node.style.filter += 'alpha(opacity=' + (this.state.alpha * this.state.fillAlpha * 100) + ')';
  	}
  
  	this.root.appendChild(node);
  };
  
  /**
   * Function: createText
   * 
   * Creates the innermost element that contains the HTML text.
   */
  mxVmlCanvas2D.prototype.createDiv = function(str, align, valign, overflow)
  {
  	var div = this.createElement('div');
  	var state = this.state;
  
  	var css = '';
  	
  	if (state.fontBackgroundColor != null)
  	{
  		css += 'background-color:' + state.fontBackgroundColor + ';';
  	}
  	
  	if (state.fontBorderColor != null)
  	{
  		css += 'border:1px solid ' + state.fontBorderColor + ';';
  	}
  	
  	if (mxUtils.isNode(str))
  	{
  		div.appendChild(str);
  	}
  	else
  	{
  		if (overflow != 'fill' && overflow != 'width')
  		{
  			var div2 = this.createElement('div');
  			div2.style.cssText = css;
  			div2.style.display = (mxClient.IS_QUIRKS) ? 'inline' : 'inline-block';
  			div2.style.zoom = '1';
  			div2.style.textDecoration = 'inherit';
  			div2.innerHTML = str;
  			div.appendChild(div2);
  		}
  		else
  		{
  			div.style.cssText = css;
  			div.innerHTML = str;
  		}
  	}
  	
  	var style = div.style;
  
  	style.fontSize = (state.fontSize / this.vmlScale) + 'px';
  	style.fontFamily = state.fontFamily;
  	style.color = state.fontColor;
  	style.verticalAlign = 'top';
  	style.textAlign = align || 'left';
  	style.lineHeight = (mxConstants.ABSOLUTE_LINE_HEIGHT) ? (state.fontSize * mxConstants.LINE_HEIGHT / this.vmlScale) + 'px' : mxConstants.LINE_HEIGHT;
  
  	if ((state.fontStyle & mxConstants.FONT_BOLD) == mxConstants.FONT_BOLD)
  	{
  		style.fontWeight = 'bold';
  	}
  
  	if ((state.fontStyle & mxConstants.FONT_ITALIC) == mxConstants.FONT_ITALIC)
  	{
  		style.fontStyle = 'italic';
  	}
  	
  	if ((state.fontStyle & mxConstants.FONT_UNDERLINE) == mxConstants.FONT_UNDERLINE)
  	{
  		style.textDecoration = 'underline';
  	}
  	
  	return div;
  };
  
  /**
   * Function: text
   * 
   * Paints the given text. Possible values for format are empty string for plain
   * text and html for HTML markup. Clipping, text background and border are not
   * supported for plain text in VML.
   */
  mxVmlCanvas2D.prototype.text = function(x, y, w, h, str, align, valign, wrap, format, overflow, clip, rotation, dir)
  {
  	if (this.textEnabled && str != null)
  	{
  		var s = this.state;
  		
  		if (format == 'html')
  		{
  			if (s.rotation != null)
  			{
  				var pt = this.rotatePoint(x, y, s.rotation, s.rotationCx, s.rotationCy);
  				
  				x = pt.x;
  				y = pt.y;
  			}
  
  			if (document.documentMode == 8 && !mxClient.IS_EM)
  			{
  				x += s.dx;
  				y += s.dy;
  				
  				// Workaround for rendering offsets
  				if (overflow != 'fill' && valign == mxConstants.ALIGN_TOP)
  				{
  					y -= 1;
  				}
  			}
  			else
  			{
  				x *= s.scale;
  				y *= s.scale;
  			}
  
  			// Adds event transparency in IE8 standards without the transparent background
  			// filter which cannot be used due to bugs in the zoomed bounding box (too slow)
  			// FIXME: No event transparency if inside v:rect (ie part of shape)
  			// KNOWN: Offset wrong for rotated text with word that are longer than the wrapping
  			// width in IE8 because real width of text cannot be determined here.
  			// This should be fixed in mxText.updateBoundingBox by calling before this and
  			// passing the real width to this method if not clipped and wrapped.
  			var abs = (document.documentMode == 8 && !mxClient.IS_EM) ? this.createVmlElement('group') : this.createElement('div');
  			abs.style.position = 'absolute';
  			abs.style.display = 'inline';
  			abs.style.left = this.format(x) + 'px';
  			abs.style.top = this.format(y) + 'px';
  			abs.style.zoom = s.scale;
  
  			var box = this.createElement('div');
  			box.style.position = 'relative';
  			box.style.display = 'inline';
  			
  			var margin = mxUtils.getAlignmentAsPoint(align, valign);
  			var dx = margin.x;
  			var dy = margin.y;
  
  			var div = this.createDiv(str, align, valign, overflow);
  			var inner = this.createElement('div');
  			
  			if (dir != null)
  			{
  				div.setAttribute('dir', dir);
  			}
  
  			if (wrap && w > 0)
  			{
  				if (!clip)
  				{
  					div.style.width = Math.round(w) + 'px';
  				}
  				
  				div.style.wordWrap = mxConstants.WORD_WRAP;
  				div.style.whiteSpace = 'normal';
  				
  				// LATER: Check if other cases need to be handled
  				if (div.style.wordWrap == 'break-word')
  				{
  					var tmp = div;
  					
  					if (tmp.firstChild != null && tmp.firstChild.nodeName == 'DIV')
  					{
  						tmp.firstChild.style.width = '100%';
  					}
  				}
  			}
  			else
  			{
  				div.style.whiteSpace = 'nowrap';
  			}
  			
  			var rot = s.rotation + (rotation || 0);
  			
  			if (this.rotateHtml && rot != 0)
  			{
  				inner.style.display = 'inline';
  				inner.style.zoom = '1';
  				inner.appendChild(div);
  
  				// Box not needed for rendering in IE8 standards
  				if (document.documentMode == 8 && !mxClient.IS_EM && this.root.nodeName != 'DIV')
  				{
  					box.appendChild(inner);
  					abs.appendChild(box);
  				}
  				else
  				{
  					abs.appendChild(inner);
  				}
  			}
  			else if (document.documentMode == 8 && !mxClient.IS_EM)
  			{
  				box.appendChild(div);
  				abs.appendChild(box);
  			}
  			else
  			{
  				div.style.display = 'inline';
  				abs.appendChild(div);
  			}
  			
  			// Inserts the node into the DOM
  			if (this.root.nodeName != 'DIV')
  			{
  				// Rectangle to fix position in group
  				var rect = this.createVmlElement('rect');
  				rect.stroked = 'false';
  				rect.filled = 'false';
  
  				rect.appendChild(abs);
  				this.root.appendChild(rect);
  			}
  			else
  			{
  				this.root.appendChild(abs);
  			}
  			
  			if (clip)
  			{
  				div.style.overflow = 'hidden';
  				div.style.width = Math.round(w) + 'px';
  				
  				if (!mxClient.IS_QUIRKS)
  				{
  					div.style.maxHeight = Math.round(h) + 'px';
  				}
  			}
  			else if (overflow == 'fill')
  			{
  				// KNOWN: Affects horizontal alignment in quirks
  				// but fill should only be used with align=left
  				div.style.overflow = 'hidden';
  				div.style.width = (Math.max(0, w) + 1) + 'px';
  				div.style.height = (Math.max(0, h) + 1) + 'px';
  			}
  			else if (overflow == 'width')
  			{
  				// KNOWN: Affects horizontal alignment in quirks
  				// but fill should only be used with align=left
  				div.style.overflow = 'hidden';
  				div.style.width = (Math.max(0, w) + 1) + 'px';
  				div.style.maxHeight = (Math.max(0, h) + 1) + 'px';
  			}
  			
  			if (this.rotateHtml && rot != 0)
  			{
  				var rad = rot * (Math.PI / 180);
  				
  				// Precalculate cos and sin for the rotation
  				var real_cos = parseFloat(parseFloat(Math.cos(rad)).toFixed(8));
  				var real_sin = parseFloat(parseFloat(Math.sin(-rad)).toFixed(8));
  
  				rad %= 2 * Math.PI;
  				if (rad < 0) rad += 2 * Math.PI;
  				rad %= Math.PI;
  				if (rad > Math.PI / 2) rad = Math.PI - rad;
  				
  				var cos = Math.cos(rad);
  				var sin = Math.sin(rad);
  
  				// Adds div to document to measure size
  				if (document.documentMode == 8 && !mxClient.IS_EM)
  				{
  					div.style.display = 'inline-block';
  					inner.style.display = 'inline-block';
  					box.style.display = 'inline-block';
  				}
  				
  				div.style.visibility = 'hidden';
  				div.style.position = 'absolute';
  				document.body.appendChild(div);
  				
  				var sizeDiv = div;
  				
  				if (sizeDiv.firstChild != null && sizeDiv.firstChild.nodeName == 'DIV')
  				{
  					sizeDiv = sizeDiv.firstChild;
  				}
  				
  				var tmp = sizeDiv.offsetWidth + 3;
  				var oh = sizeDiv.offsetHeight;
  				
  				if (clip)
  				{
  					w = Math.min(w, tmp);
  					oh = Math.min(oh, h);
  				}
  				else
  				{
  					w = tmp;
  				}
  
  				// Handles words that are longer than the given wrapping width
  				if (wrap)
  				{
  					div.style.width = w + 'px';
  				}
  				
  				// Simulates max-height in quirks
  				if (mxClient.IS_QUIRKS && (clip || overflow == 'width') && oh > h)
  				{
  					oh = h;
  					
  					// Quirks does not support maxHeight
  					div.style.height = oh + 'px';
  				}
  				
  				h = oh;
  
  				var top_fix = (h - h * cos + w * -sin) / 2 - real_sin * w * (dx + 0.5) + real_cos * h * (dy + 0.5);
  				var left_fix = (w - w * cos + h * -sin) / 2 + real_cos * w * (dx + 0.5) + real_sin * h * (dy + 0.5);
  
  				if (abs.nodeName == 'group' && this.root.nodeName == 'DIV')
  				{
  					// Workaround for bug where group gets moved away if left and top are non-zero in IE8 standards
  					var pos = this.createElement('div');
  					pos.style.display = 'inline-block';
  					pos.style.position = 'absolute';
  					pos.style.left = this.format(x + (left_fix - w / 2) * s.scale) + 'px';
  					pos.style.top = this.format(y + (top_fix - h / 2) * s.scale) + 'px';
  					
  					abs.parentNode.appendChild(pos);
  					pos.appendChild(abs);
  				}
  				else
  				{
  					var sc = (document.documentMode == 8 && !mxClient.IS_EM) ? 1 : s.scale;
  					
  					abs.style.left = this.format(x + (left_fix - w / 2) * sc) + 'px';
  					abs.style.top = this.format(y + (top_fix - h / 2) * sc) + 'px';
  				}
  				
  				// KNOWN: Rotated text rendering quality is bad for IE9 quirks
  				inner.style.filter = "progid:DXImageTransform.Microsoft.Matrix(M11="+real_cos+", M12="+
  					real_sin+", M21="+(-real_sin)+", M22="+real_cos+", sizingMethod='auto expand')";
  				inner.style.backgroundColor = this.rotatedHtmlBackground;
  				
  				if (this.state.alpha < 1)
  				{
  					inner.style.filter += 'alpha(opacity=' + (this.state.alpha * 100) + ')';
  				}
  
  				// Restore parent node for DIV
  				inner.appendChild(div);
  				div.style.position = '';
  				div.style.visibility = '';
  			}
  			else if (document.documentMode != 8 || mxClient.IS_EM)
  			{
  				div.style.verticalAlign = 'top';
  				
  				if (this.state.alpha < 1)
  				{
  					abs.style.filter = 'alpha(opacity=' + (this.state.alpha * 100) + ')';
  				}
  				
  				// Adds div to document to measure size
  				var divParent = div.parentNode;
  				div.style.visibility = 'hidden';
  				document.body.appendChild(div);
  				
  				w = div.offsetWidth;
  				var oh = div.offsetHeight;
  				
  				// Simulates max-height in quirks
  				if (mxClient.IS_QUIRKS && clip && oh > h)
  				{
  					oh = h;
  					
  					// Quirks does not support maxHeight
  					div.style.height = oh + 'px';
  				}
  				
  				h = oh;
  				
  				div.style.visibility = '';
  				divParent.appendChild(div);
  				
  				abs.style.left = this.format(x + w * dx * this.state.scale) + 'px';
  				abs.style.top = this.format(y + h * dy * this.state.scale) + 'px';
  			}
  			else
  			{
  				if (this.state.alpha < 1)
  				{
  					div.style.filter = 'alpha(opacity=' + (this.state.alpha * 100) + ')';
  				}
  				
  				// Faster rendering in IE8 without offsetWidth/Height
  				box.style.left = (dx * 100) + '%';
  				box.style.top = (dy * 100) + '%';
  			}
  		}
  		else
  		{
  			this.plainText(x, y, w, h, mxUtils.htmlEntities(str, false), align, valign, wrap, format, overflow, clip, rotation, dir);
  		}
  	}
  };
  
  /**
   * Function: plainText
   * 
   * Paints the outline of the current path.
   */
  mxVmlCanvas2D.prototype.plainText = function(x, y, w, h, str, align, valign, wrap, format, overflow, clip, rotation, dir)
  {
  	// TextDirection is ignored since this code is not used (format is always HTML in the text function)
  	var s = this.state;
  	x = (x + s.dx) * s.scale;
  	y = (y + s.dy) * s.scale;
  	
  	var node = this.createVmlElement('shape');
  	node.style.width = '1px';
  	node.style.height = '1px';
  	node.stroked = 'false';
  
  	var fill = this.createVmlElement('fill');
  	fill.color = s.fontColor;
  	fill.opacity = (s.alpha * 100) + '%';
  	node.appendChild(fill);
  	
  	var path = this.createVmlElement('path');
  	path.textpathok = 'true';
  	path.v = 'm ' + this.format(0) + ' ' + this.format(0) + ' l ' + this.format(1) + ' ' + this.format(0);
  	
  	node.appendChild(path);
  	
  	// KNOWN: Font family and text decoration ignored
  	var tp = this.createVmlElement('textpath');
  	tp.style.cssText = 'v-text-align:' + align;
  	tp.style.align = align;
  	tp.style.fontFamily = s.fontFamily;
  	tp.string = str;
  	tp.on = 'true';
  	
  	// Scale via fontsize instead of node.style.zoom for correct offsets in IE8
  	var size = s.fontSize * s.scale / this.vmlScale;
  	tp.style.fontSize = size + 'px';
  	
  	// Bold
  	if ((s.fontStyle & mxConstants.FONT_BOLD) == mxConstants.FONT_BOLD)
  	{
  		tp.style.fontWeight = 'bold';
  	}
  	
  	// Italic
  	if ((s.fontStyle & mxConstants.FONT_ITALIC) == mxConstants.FONT_ITALIC)
  	{
  		tp.style.fontStyle = 'italic';
  	}
  
  	// Underline
  	if ((s.fontStyle & mxConstants.FONT_UNDERLINE) == mxConstants.FONT_UNDERLINE)
  	{
  		tp.style.textDecoration = 'underline';
  	}
  
  	var lines = str.split('\n');
  	var textHeight = size + (lines.length - 1) * size * mxConstants.LINE_HEIGHT;
  	var dx = 0;
  	var dy = 0;
  
  	if (valign == mxConstants.ALIGN_BOTTOM)
  	{
  		dy = - textHeight / 2;
  	}
  	else if (valign != mxConstants.ALIGN_MIDDLE) // top
  	{
  		dy = textHeight / 2;
  	}
  
  	if (rotation != null)
  	{
  		node.style.rotation = rotation;
  		var rad = rotation * (Math.PI / 180);
  		dx = Math.sin(rad) * dy;
  		dy = Math.cos(rad) * dy;
  	}
  
  	// FIXME: Clipping is relative to bounding box
  	/*if (clip)
  	{
  		node.style.clip = 'rect(0px ' + this.format(w) + 'px ' + this.format(h) + 'px 0px)';
  	}*/
  	
  	node.appendChild(tp);
  	node.style.left = this.format(x - dx) + 'px';
  	node.style.top = this.format(y + dy) + 'px';
  	
  	this.root.appendChild(node);
  };
  
  /**
   * Function: stroke
   * 
   * Paints the outline of the current path.
   */
  mxVmlCanvas2D.prototype.stroke = function()
  {
  	this.addNode(false, true);
  };
  
  /**
   * Function: fill
   * 
   * Fills the current path.
   */
  mxVmlCanvas2D.prototype.fill = function()
  {
  	this.addNode(true, false);
  };
  
  /**
   * Function: fillAndStroke
   * 
   * Fills and paints the outline of the current path.
   */
  mxVmlCanvas2D.prototype.fillAndStroke = function()
  {
  	this.addNode(true, true);
  };
  
  export default mxVmlCanvas2D;
  