regsvggen/xml/Color2.xml

<test title="Color Testing">
	<description>
		This test color opacity on fill and strokes, because this
		is handled differently in the Java 2D API than in SVG.
	</description>
	<description>
		The test fills and draws a rectangle with fully opaque
		paints but a half transparent SRC_OVER AlphaComposite
		first. Then, it draws and fills the same rectangle
		with half transparent paints and a fully opaque 
	  SRC_OVER AlphaComposite.
	</description>
	<javaCode>
		<![CDATA[
		g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
											 RenderingHints.VALUE_ANTIALIAS_ON);	
	
		// Define Colors
		Color blue = Color.blue;
		Color green = Color.green;
		Color transparentBlue = new Color(0, 0, 255, 128);
		Color transparentGreen = new Color(0, 255, 0, 128);

		// Define AlphaComposites
		AlphaComposite srcOver = AlphaComposite.SrcOver;
		AlphaComposite srcOverTransparent = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, .5f);

		// Define rectangle
		Rectangle rect = new Rectangle(10, 40, 100, 50);

		// Define thick stroke
		BasicStroke thickStroke = new BasicStroke(5);

		// First test: Opaque Colors with AlphaComposite
		g.setPaint(Color.black);
		g.drawString("Opaque Colors, Half Transparent AlphaComposite", 10, 30);

		g.setComposite(srcOverTransparent);
		g.setStroke(thickStroke);
		g.setPaint(blue);
		g.fill(rect);
		g.setPaint(green);
		g.draw(rect);
		g.setPaint(Color.black);
		g.fill(rect);

		g.translate(0, 90);

		// Second test: transparent color, opaque Source Over
		g.setPaint(Color.black);
		g.setComposite(srcOver);
		g.drawString("Transparent Colors, Opaque AlphaComposite SrcOver", 10, 30);

		g.setPaint(transparentBlue);
		g.fill(rect);
		g.setPaint(transparentGreen);
		g.draw(rect);
		]]>
	</javaCode>
</test>