regsvggen/xml/Clip.xml

<test title="Clip Testing">
	<description>
		This test validates the convertion of Java 2D clip into
		SVG clipPath definition and attributes
	</description>
	<description>
		The test positions the clip so that it can be visually
		represented by doing the following: fill a rectangle
		first, then set the clip, then fill the rectangle again
		in a different color.
	</description>
	<javaCode>
		<![CDATA[
    g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 
                       RenderingHints.VALUE_ANTIALIAS_ON);

    // Save original clip
    Shape clipShape = g.getClip();
    AffineTransform transform = g.getTransform();

    g.setPaint(Color.black);

	Dimension size = new Dimension(300, 400);
	int w=100, h=50;
	int vOffset = h + 20;
	BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
	Graphics2D gi = image.createGraphics();
	gi.setPaint(Color.white);
	gi.fillRect(0, 0, 100, 50);
	gi.setPaint(Color.green);
	gi.fillRect(0, 0, 50, 25);
	gi.setPaint(Color.black);
	gi.fillRect(50, 0, 50, 25);
	gi.setPaint(Color.red);
	gi.fillRect(50, 25, 50, 25);
	gi.dispose();
		
    // Set simple clip : does not modify the output
    g.clipRect(0, 0, size.width, size.height);
    g.drawImage(image, 0, 0, null);
    g.setClip(clipShape);

    g.drawString("Clip set to device bounds", 110, 25);

    g.translate(0, vOffset);

    // Intersect current clip with a smaller clip : show only 
    // the top right corner of the image 
		g.drawString("Clip set to upper right quarter", 110, 25);

    g.clipRect(w/2, 0, w/2, h/2);
    g.drawImage(image, 0, 0, null);

    // Restore
    g.setTransform(transform);
    g.setClip(clipShape);
    g.translate(0, 2*vOffset);

    // Scale before setting the same clip
		g.drawString("Clip set to upper right quarter", 110, 15);
		g.drawString("after .5 scale", 110, 30);
    g.scale(.5, .5);
    g.clipRect(w/2, 0, w/2, h/2);
    g.drawImage(image, 0, 0, null);

    // Restore
    g.setTransform(transform);
    g.setClip(clipShape);

    g.translate(0, 3*vOffset);

    // Use a non-rectangle clipping area
		g.drawString("Non-Rectagular clip", 110, 25);
    Shape circle = new Ellipse2D.Float(0, 0, w, h);
    g.clip(circle);
    g.drawImage(image, 0, 0, null);

    // Restore
    g.setTransform(transform);
    g.setClip(clipShape);

    g.translate(0, 4*vOffset);

    // Use a non-rectangle clipping area again, 
    // after setting a scale transform
		g.drawString("Non-Rectagular clip after", 110, 15);
		g.drawString(".5 scale", 110, 30);
    g.scale(.5, .5);
    g.clip(circle);
    g.drawImage(image, 0, 0, null);

    // Restore
    g.setTransform(transform);
    g.setClip(clipShape);
    g.translate(0, 5*vOffset);

    // Use a non-rectangle clipping area again, 
    // before setting a scale transform
		g.drawString("Non-Rectagular clip before", 110, 15);
		g.drawString(".5 scale", 110, 30);
    g.clip(circle);
    g.scale(.5, .5);
    g.drawImage(image, 0, 0, null);

    ]]>
  </javaCode>
</test>