A {@link Painter} implementation composed of an array of Painters.CompoundPainter provides a means for combining several individual Painters, or groups of them, into one logical unit. Each of the Painters are executed in order. BufferedImageOp filter effects can be applied to them together as a whole. The entire set of painting operations may be cached together.
For example, if I want to create a CompoundPainter that started with a blue background, had pinstripes on it running at a 45 degree angle, and those pinstripes appeared to "fade in" from left to right, I would write the following:
Color blue = new Color(0x417DDD); Color translucent = new Color(blue.getRed(), blue.getGreen(), blue.getBlue(), 0); panel.setBackground(blue); panel.setForeground(Color.LIGHT_GRAY); GradientPaint blueToTranslucent = new GradientPaint( new Point2D.Double(.4, 0), blue, new Point2D.Double(1, 0), translucent); MattePainter veil = new MattePainter(blueToTranslucent); veil.setPaintStretched(true); Painter pinstripes = new PinstripePainter(45); Painter backgroundPainter = new RectanglePainter(this.getBackground(), null); Painter p = new CompoundPainter(backgroundPainter, pinstripes, veil); panel.setBackgroundPainter(p); | |
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