コード例 #1
0
 @Override
 public void paintComponent(Graphics g) {
   g.setColor(getBackground());
   g.fillRect(0, 0, getWidth(), getHeight());
   int w = bufferedImage.getWidth(this);
   int h = bufferedImage.getHeight(this);
   if (mode == Flip.NONE) {
     g.drawImage(bufferedImage, 0, 0, w, h, this);
   } else if (mode == Flip.VERTICAL) {
     AffineTransform at = AffineTransform.getScaleInstance(1d, -1d);
     at.translate(0, -h);
     Graphics2D g2 = (Graphics2D) g.create();
     g2.drawImage(bufferedImage, at, this);
     g2.dispose();
   } else if (mode == Flip.HORIZONTAL) {
     AffineTransform at = AffineTransform.getScaleInstance(-1d, 1d);
     at.translate(-w, 0);
     AffineTransformOp atOp = new AffineTransformOp(at, null);
     g.drawImage(atOp.filter(bufferedImage, null), 0, 0, w, h, this);
   }
 }