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Showing posts with label RGBImageFilter. Show all posts
Showing posts with label RGBImageFilter. Show all posts

2013/08/29

aterai

Create 9-slice scaling image JButton

Code

class NineSliceScalingIcon implements Icon {
  private final BufferedImage image;
  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.leftw = leftw;
    this.rightw = rightw;
    this.toph = toph;
    this.bottomh = bottomh;
  }
  @Override public int getIconWidth() {
    return width; // Math.max(image.getWidth(null), width);
  }
  @Override public int getIconHeight() {
    return Math.max(image.getHeight(null), height);
  }
  @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); // 1.8.0: work fine?
    int iw = image.getWidth(cmp);
    int ih = image.getHeight(cmp);
    width  = cmp.getWidth() - i.left - i.right;
    height = cmp.getHeight() - i.top - i.bottom;

    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);

      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();
  }
}

References

2013/06/28

aterai

Turn the JProgressBar red with JLayer and RGBImageFilter

Code

class BlockedColorLayerUI extends LayerUI{
  public boolean isPreventing = false;
  private BufferedImage bi;
  private int prevw = -1;
  private int prevh = -1;
  @Override public void paint(Graphics g, JComponent c) {
    if(isPreventing) {
      JLayer jlayer = (JLayer)c;
      JProgressBar progress = (JProgressBar)jlayer.getView();
      int w = progress.getSize().width;
      int h = progress.getSize().height;

      if(bi==null || w!=prevw || h!=prevh) {
        bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
      }
      prevw = w;
      prevh = h;

      Graphics2D g2 = bi.createGraphics();
      super.paint(g2, c);
      g2.dispose();

      Image image = c.createImage(
          new FilteredImageSource(
              bi.getSource(), new RedGreenChannelSwapFilter()));
      //BUG: cause an infinite repaint loop: g.drawImage(image, 0, 0, c);
      g.drawImage(image, 0, 0, null);
    }else{
      super.paint(g, c);
    }
  }
}

class RedGreenChannelSwapFilter extends RGBImageFilter{
  @Override public int filterRGB(int x, int y, int argb) {
    int r = (int)((argb >> 16) & 0xff);
    int g = (int)((argb >>  8) & 0xff);
    int b = (int)((argb    ) & 0xff);
    return (argb & 0xff000000) | (g<<16) | (r<<8) | (b);
  }
}

References

2009/08/17

aterai

Add JButton and JLabel to the EditorComponent of JComboBox

Code

class SiteComboBoxLayout implements LayoutManager {
  private final JLabel favicon;
  private final JButton feedButton;
  protected SiteComboBoxLayout(JLabel favicon, JButton feedButton) {
    this.favicon = favicon;
    this.feedButton = feedButton;
  }
  @Override public void addLayoutComponent(String name, Component comp) {
    /* not needed */
  }
  @Override public void removeLayoutComponent(Component comp) {
    /* not needed */
  }
  @Override public Dimension preferredLayoutSize(Container parent) {
    return parent.getPreferredSize();
  }
  @Override public Dimension minimumLayoutSize(Container parent) {
    return parent.getMinimumSize();
  }
  @Override public void layoutContainer(Container parent) {
    if (!(parent instanceof JComboBox)) {
      return;
    }
    JComboBox<?> cb = (JComboBox<?>) parent;
    int width = cb.getWidth();
    int height = cb.getHeight();
    Insets insets = cb.getInsets();
    int arrowHeight = height - insets.top - insets.bottom;
    int arrowWidth = arrowHeight;
    int faviconWidth = arrowHeight;
    int feedWidth; // = arrowHeight;

    // Arrow Icon JButton
    JButton arrowButton = (JButton) cb.getComponent(0);
    if (Objects.nonNull(arrowButton)) {
      Insets arrowInsets = arrowButton.getInsets();
      arrowWidth = arrowButton.getPreferredSize().width
        + arrowInsets.left + arrowInsets.right;
      arrowButton.setBounds(width - insets.right - arrowWidth, insets.top,
                            arrowWidth, arrowHeight);
    }

    // Favicon JLabel
    if (Objects.nonNull(favicon)) {
      Insets faviconInsets = favicon.getInsets();
      faviconWidth = favicon.getPreferredSize().width
          + faviconInsets.left + faviconInsets.right;
      favicon.setBounds(insets.left, insets.top, faviconWidth, arrowHeight);
    }


    // Feed Icon JButton
    if (Objects.nonNull(feedButton) && feedButton.isVisible()) {
      Insets feedInsets = feedButton.getInsets();
      feedWidth = feedButton.getPreferredSize().width
          + feedInsets.left + feedInsets.right;
      feedButton.setBounds(width - insets.right - feedWidth - arrowWidth, insets.top,
                           feedWidth, arrowHeight);
    } else {
      feedWidth = 0;
    }

    // JComboBox Editor
    Component editor = cb.getEditor().getEditorComponent();
    if (Objects.nonNull(editor)) {
      editor.setBounds(insets.left + faviconWidth, insets.top,
          width  - insets.left - insets.right - arrowWidth - faviconWidth - feedWidth,
          height - insets.top  - insets.bottom);
    }
  }
}

References

2008/12/02

aterai

JLabel Star Rating Bar

Code

class LevelBar extends JPanel implements MouseListener, MouseMotionListener{
  private final int gap;
  protected final List< ImageIcon > iconList;
  protected final List< JLabel > labelList = Arrays.asList(
    new JLabel(),new JLabel(),new JLabel(),new JLabel(),new JLabel()
  );
  protected final ImageIcon defaultIcon;
  private int clicked = -1;
  public LevelBar(ImageIcon defaultIcon, List< ImageIcon > list, int gap) {
    super(new GridLayout(1, 5, gap*2, gap*2));
    this.defaultIcon = defaultIcon;
    this.iconList = list;
    this.gap = gap;
    for(JLabel l:labelList) {
      l.setIcon(defaultIcon);
      add(l);
    }
    addMouseListener(this);
    addMouseMotionListener(this);
  }
  public void clear() {
    clicked = -1;
    repaintIcon(clicked);
  }
  public int getLevel() {
    return clicked;
  }
  public void setLevel(int l) {
    clicked = l;
    repaintIcon(clicked);
  }
  private int getSelectedIconIndex(Point p) {
    for(int i=0;i < labelList.size();i++) {
      Rectangle r = labelList.get(i).getBounds();
      r.grow(gap, gap);
      if(r.contains(p)) return i;
    }
    return -1;
  }
  protected void repaintIcon(int index) {
    for(int i=0;i < labelList.size();i++) {
      labelList.get(i).setIcon(i <= index?iconList.get(i):defaultIcon);
    }
    repaint();
  }
  public void mouseMoved(MouseEvent e) {
    repaintIcon(getSelectedIconIndex(e.getPoint()));
  }
  public void mouseEntered(MouseEvent e) {
    repaintIcon(getSelectedIconIndex(e.getPoint()));
  }
  public void mouseClicked(MouseEvent e) {
    clicked = getSelectedIconIndex(e.getPoint());
  }
  public void mouseExited(MouseEvent e) {
    repaintIcon(clicked);
  }
  public void mouseDragged(MouseEvent e) {}
  public void mousePressed(MouseEvent e) {}
  public void mouseReleased(MouseEvent e) {}
}
class SelectedImageFilter extends RGBImageFilter {
  private final float[] filter;
  public SelectedImageFilter(float[] filter) {
    this.filter = filter;
    canFilterIndexColorModel = true;
  }
  public int filterRGB(int x, int y, int argb) {
    Color color = new Color(argb, true);
    float[] array = new float[4];
    color.getComponents(array);
    return new Color(array[0]*filter[0],
                     array[1]*filter[1],
                     array[2]*filter[2],
                     array[3]).getRGB();
  }
}

References