Swing/NineSliceScalingButton のバックアップの現在との差分(No.7)

class NineSliceScalingIcon implements Icon {
  private final BufferedImage image;
  private final int a, b, c, d;
  private int width, height;
  public NineSliceScalingIcon(BufferedImage image, int a, int b, int c, int d) {
  private final int leftw;
  private final int rightw;
  private final int toph;
  private final int bottomh;
  private int width;
  private int height;
  protected NineSliceScalingIcon(
      BufferedImage image, int leftw, int rightw, int toph, int bottomh) {
    this.image = image;
    this.a = a;
    this.b = b;
    this.c = c;
    this.d = d;
    this.leftw = leftw;
    this.rightw = rightw;
    this.toph = toph;
    this.bottomh = bottomh;
  }
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#spanend
  @Override public int getIconWidth() {
    return width; // Math.max(image.getWidth(null), width);
  }
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#spanend
  @Override public int getIconHeight() {
    return Math.max(image.getHeight(null), height);
  }
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#spanend
  @Override public void paintIcon(Component cmp, Graphics g, int x, int y) {
    Graphics2D g2 = (Graphics2D) g.create();
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_ON);
    Insets i;
    if (cmp instanceof JComponent) {
      i = ((JComponent) cmp).getBorder().getBorderInsets(cmp);
    } else {
      i = new Insets(0, 0, 0, 0);
    }
    //g2.translate(x, y); //JDK 1.7.0 などで描画がおかしい？ 1.8.0は正常
    Insets i = cmp instanceof Container ? ((Container) cmp).getInsets()
                                        : new Insets(0, 0, 0, 0);
    // g2.translate(x, y); // 1.8.0: work fine?
    int iw = image.getWidth(cmp);
    int ih = image.getHeight(cmp);
    width = cmp.getWidth() - i.left - i.right;
    width  = cmp.getWidth() - i.left - i.right;
    height = cmp.getHeight() - i.top - i.bottom;
    g2.drawImage(image.getSubimage(a, c, iw - a - b, ih - c - d),
                 a, c, width - a - b, height - c - d, cmp);
    if (a > 0 && b > 0 && c > 0 && d > 0) {
      g2.drawImage(image.getSubimage(a, 0, iw - a - b, c),
                   a, 0, width - a - b, c, cmp);
      g2.drawImage(image.getSubimage(a, ih - d, iw - a - b, d),
                   a, height - d, width - a - b, d, cmp);
      g2.drawImage(image.getSubimage(0, c, a, ih - c - d),
                   0, c, a, height - c - d, cmp);
      g2.drawImage(image.getSubimage(iw - b, c, b, ih - c - d),
                   width - b, c, b, height - c - d, cmp);
      g2.drawImage(image.getSubimage(0, 0, a, c), 0, 0, cmp);
      g2.drawImage(image.getSubimage(iw - b, 0, b, c),
                   width - b, 0, cmp);
      g2.drawImage(image.getSubimage(0, ih - d, a, d),
                   0, height - d, cmp);
      g2.drawImage(image.getSubimage(iw - b, ih - d, b, d),
                   width - b, height - d, cmp);
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#spanend
    g2.drawImage(
        image.getSubimage(leftw, toph, iw - leftw - rightw, ih - toph - bottomh),
        leftw, toph, width - leftw - rightw, height - toph - bottomh, cmp);
    if (leftw > 0 && rightw > 0 && toph > 0 && bottomh > 0) {
      g2.drawImage(image.getSubimage(leftw, 0, iw - leftw - rightw, toph),
                   leftw, 0, width - leftw - rightw, toph, cmp);
      g2.drawImage(image.getSubimage(leftw, ih - bottomh, iw - leftw - rightw, bottomh),
                   leftw, height - bottomh, width - leftw - rightw, bottomh, cmp);
      g2.drawImage(image.getSubimage(0, toph, leftw, ih - toph - bottomh),
                   0, toph, leftw, height - toph - bottomh, cmp);
      g2.drawImage(image.getSubimage(iw - rightw, toph, rightw, ih - toph - bottomh),
                   width - rightw, toph, rightw, height - toph - bottomh, cmp);
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#spanend
      g2.drawImage(image.getSubimage(0, 0, leftw, toph),
                   0, 0, cmp);
      g2.drawImage(image.getSubimage(iw - rightw, 0, rightw, toph),
                   width - rightw, 0, cmp);
      g2.drawImage(image.getSubimage(0, ih - bottomh, leftw, bottomh),
                   0, height - bottomh, cmp);
      g2.drawImage(image.getSubimage(iw - rightw, ih - bottomh, rightw, bottomh),
                   width - rightw, height - bottomh, cmp);
    }
    g2.dispose();
  }
}