mxStencil.prototype.drawNode = function()

in airavata-kubernetes/workflow-composer/src/js/shape/mxStencil.js [503:761]
239 lines of code
54 McCabe index (conditional complexity)

mxStencil.prototype.drawNode = function(canvas, shape, node, aspect, disableShadow)
{
	var name = node.nodeName;
	var x0 = aspect.x;
	var y0 = aspect.y;
	var sx = aspect.width;
	var sy = aspect.height;
	var minScale = Math.min(sx, sy);

	if (name == 'save')
	{
		canvas.save();
	}
	else if (name == 'restore')
	{
		canvas.restore();
	}
	else if (name == 'path')
	{
		canvas.begin();

		// Renders the elements inside the given path
		var childNode = node.firstChild;
		
		while (childNode != null)
		{
			if (childNode.nodeType == mxConstants.NODETYPE_ELEMENT)
			{
				this.drawNode(canvas, shape, childNode, aspect, disableShadow);
			}
			
			childNode = childNode.nextSibling;
		}
	}
	else if (name == 'close')
	{
		canvas.close();
	}
	else if (name == 'move')
	{
		canvas.moveTo(x0 + Number(node.getAttribute('x')) * sx, y0 + Number(node.getAttribute('y')) * sy);
	}
	else if (name == 'line')
	{
		canvas.lineTo(x0 + Number(node.getAttribute('x')) * sx, y0 + Number(node.getAttribute('y')) * sy);
	}
	else if (name == 'quad')
	{
		canvas.quadTo(x0 + Number(node.getAttribute('x1')) * sx,
				y0 + Number(node.getAttribute('y1')) * sy,
				x0 + Number(node.getAttribute('x2')) * sx,
				y0 + Number(node.getAttribute('y2')) * sy);
	}
	else if (name == 'curve')
	{
		canvas.curveTo(x0 + Number(node.getAttribute('x1')) * sx,
				y0 + Number(node.getAttribute('y1')) * sy,
				x0 + Number(node.getAttribute('x2')) * sx,
				y0 + Number(node.getAttribute('y2')) * sy,
				x0 + Number(node.getAttribute('x3')) * sx,
				y0 + Number(node.getAttribute('y3')) * sy);
	}
	else if (name == 'arc')
	{
		canvas.arcTo(Number(node.getAttribute('rx')) * sx,
				Number(node.getAttribute('ry')) * sy,
				Number(node.getAttribute('x-axis-rotation')),
				Number(node.getAttribute('large-arc-flag')),
				Number(node.getAttribute('sweep-flag')),
				x0 + Number(node.getAttribute('x')) * sx,
				y0 + Number(node.getAttribute('y')) * sy);
	}
	else if (name == 'rect')
	{
		canvas.rect(x0 + Number(node.getAttribute('x')) * sx,
				y0 + Number(node.getAttribute('y')) * sy,
				Number(node.getAttribute('w')) * sx,
				Number(node.getAttribute('h')) * sy);
	}
	else if (name == 'roundrect')
	{
		var arcsize = Number(node.getAttribute('arcsize'));

		if (arcsize == 0)
		{
			arcsize = mxConstants.RECTANGLE_ROUNDING_FACTOR * 100;
		}
		
		var w = Number(node.getAttribute('w')) * sx;
		var h = Number(node.getAttribute('h')) * sy;
		var factor = Number(arcsize) / 100;
		var r = Math.min(w * factor, h * factor);
		
		canvas.roundrect(x0 + Number(node.getAttribute('x')) * sx,
				y0 + Number(node.getAttribute('y')) * sy,
				w, h, r, r);
	}
	else if (name == 'ellipse')
	{
		canvas.ellipse(x0 + Number(node.getAttribute('x')) * sx,
			y0 + Number(node.getAttribute('y')) * sy,
			Number(node.getAttribute('w')) * sx,
			Number(node.getAttribute('h')) * sy);
	}
	else if (name == 'image')
	{
		if (!shape.outline)
		{
			var src = this.evaluateAttribute(node, 'src', shape);
			
			canvas.image(x0 + Number(node.getAttribute('x')) * sx,
				y0 + Number(node.getAttribute('y')) * sy,
				Number(node.getAttribute('w')) * sx,
				Number(node.getAttribute('h')) * sy,
				src, false, node.getAttribute('flipH') == '1',
				node.getAttribute('flipV') == '1');
		}
	}
	else if (name == 'text')
	{
		if (!shape.outline)
		{
			var str = this.evaluateTextAttribute(node, 'str', shape);
			var rotation = node.getAttribute('vertical') == '1' ? -90 : 0;
			
			if (node.getAttribute('align-shape') == '0')
			{
				var dr = shape.rotation;
	
				// Depends on flipping
				var flipH = mxUtils.getValue(shape.style, mxConstants.STYLE_FLIPH, 0) == 1;
				var flipV = mxUtils.getValue(shape.style, mxConstants.STYLE_FLIPV, 0) == 1;
				
				if (flipH && flipV)
				{
					rotation -= dr;
				}
				else if (flipH || flipV)
				{
					rotation += dr;
				}
				else
				{
					rotation -= dr;
				}
			}
	
			rotation -= node.getAttribute('rotation');
	
			canvas.text(x0 + Number(node.getAttribute('x')) * sx,
					y0 + Number(node.getAttribute('y')) * sy,
					0, 0, str, node.getAttribute('align') || 'left',
					node.getAttribute('valign') || 'top', false, '',
					null, false, rotation);
		}
	}
	else if (name == 'include-shape')
	{
		var stencil = mxStencilRegistry.getStencil(node.getAttribute('name'));
		
		if (stencil != null)
		{
			var x = x0 + Number(node.getAttribute('x')) * sx;
			var y = y0 + Number(node.getAttribute('y')) * sy;
			var w = Number(node.getAttribute('w')) * sx;
			var h = Number(node.getAttribute('h')) * sy;
			
			stencil.drawShape(canvas, shape, x, y, w, h);
		}
	}
	else if (name == 'fillstroke')
	{
		canvas.fillAndStroke();
	}
	else if (name == 'fill')
	{
		canvas.fill();
	}
	else if (name == 'stroke')
	{
		canvas.stroke();
	}
	else if (name == 'strokewidth')
	{
		var s = (node.getAttribute('fixed') == '1') ? 1 : minScale;
		canvas.setStrokeWidth(Number(node.getAttribute('width')) * s);
	}
	else if (name == 'dashed')
	{
		canvas.setDashed(node.getAttribute('dashed') == '1');
	}
	else if (name == 'dashpattern')
	{
		var value = node.getAttribute('pattern');
		
		if (value != null)
		{
			var tmp = value.split(' ');
			var pat = [];
			
			for (var i = 0; i < tmp.length; i++)
			{
				if (tmp[i].length > 0)
				{
					pat.push(Number(tmp[i]) * minScale);
				}
			}
			
			value = pat.join(' ');
			canvas.setDashPattern(value);
		}
	}
	else if (name == 'strokecolor')
	{
		canvas.setStrokeColor(node.getAttribute('color'));
	}
	else if (name == 'linecap')
	{
		canvas.setLineCap(node.getAttribute('cap'));
	}
	else if (name == 'linejoin')
	{
		canvas.setLineJoin(node.getAttribute('join'));
	}
	else if (name == 'miterlimit')
	{
		canvas.setMiterLimit(Number(node.getAttribute('limit')));
	}
	else if (name == 'fillcolor')
	{
		canvas.setFillColor(node.getAttribute('color'));
	}
	else if (name == 'alpha')
	{
		canvas.setAlpha(node.getAttribute('alpha'));
	}
	else if (name == 'fontcolor')
	{
		canvas.setFontColor(node.getAttribute('color'));
	}
	else if (name == 'fontstyle')
	{
		canvas.setFontStyle(node.getAttribute('style'));
	}
	else if (name == 'fontfamily')
	{
		canvas.setFontFamily(node.getAttribute('family'));
	}
	else if (name == 'fontsize')
	{
		canvas.setFontSize(Number(node.getAttribute('size')) * minScale);
	}
	
	if (disableShadow && (name == 'fillstroke' || name == 'fill' || name == 'stroke'))
	{
		disableShadow = false;
		canvas.setShadow(false);
	}
};