test-case-app/public/mxgraph-base/js/util/mxVmlCanvas2D.js

/**
 * Copyright (c) 2006-2015, JGraph Ltd
 * Copyright (c) 2006-2015, Gaudenz Alder
 */
/**
 *
 * 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:' + mxUtils.htmlEntities(state.fontBackgroundColor) + ';';
	}
	
	if (state.fontBorderColor != null)
	{
		css += 'border:1px solid ' + mxUtils.htmlEntities(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);
};