Swing/TranslucentFrame のバックアップ(No.8)

TITLE:SynthでJInternalFrameを半透明にする

Posted by terai at 2008-12-01

SynthでJInternalFrameを半透明にする

Synthを使ったLookAndFeelで、JInternalFrame を半透明にします。

  • &jnlp;
  • &jar;
  • &zip;

#screenshot

サンプルコード

try{
  for(UIManager.LookAndFeelInfo laf: UIManager.getInstalledLookAndFeels())
    if("Nimbus".equals(laf.getName())) {
      UIManager.setLookAndFeel(laf.getClassName());
      SynthLookAndFeel.setStyleFactory(
        new MySynthStyleFactory(SynthLookAndFeel.getStyleFactory()));
      break;
    }
  }
}catch(Exception e) {
  e.printStackTrace();
}

class MySynthStyleFactory extends SynthStyleFactory {
  private SynthStyleFactory wrappedFactory;
  public MySynthStyleFactory(SynthStyleFactory factory) {
    this.wrappedFactory = factory;
  }
  public SynthStyle getStyle(JComponent c, Region id) {
    SynthStyle s = wrappedFactory.getStyle(c, id);
    //if(id==Region.INTERNAL_FRAME_TITLE_PANE||id==Region.INTERNAL_FRAME) {
    if(id==Region.INTERNAL_FRAME) {
      s = new TranslucentSynthSytle(s);
    }
    return s;
  }
}
class TranslucentSynthSytle extends SynthStyle {
  private final SynthStyle style;
  public TranslucentSynthSytle(SynthStyle s) {
    style = s;
  }
  public SynthPainter getPainter(final SynthContext context) {
    return new SynthPainter() {
      public void paintInternalFrameBackground(SynthContext context,
                           Graphics g, int x, int y, int w, int h) {
        g.setColor(new Color(100,200,100,100));
        g.fillRoundRect(x,y,w-1,h-1,15,15);
      }
    };
  }
  public boolean isOpaque(SynthContext context) {
    if(context.getRegion()==Region.INTERNAL_FRAME) {
      return false;
    }else{
      return style.isOpaque(context);
    }
  }
  public Color getColorForState(SynthContext context, ColorType type) {
    return null; //Color.RED;
  }
  public Font getFontForState(SynthContext context) {
    return null; //new Font("MONOSPACE", Font.ITALIC, 24);
  }
  //...

解説

上記のサンプルでは、SynthStyle#paintInternalFrameBackground、SynthStyle#isOpaqueなどのメソッドをオーバーライドしてJInternalFrame を半透明にします。

  • Synthを使ったLook&Feel

#screenshot(,screenshot1.png)

  • JDK 1.6.0_10 で追加された NimbusLookAndFeel や、GTKLookAndFeel など

「警告:com.sun.java.swing.Painter は Sun が所有する API であり、今後のリリースで削除される可能性があります。」といった警告が出ても良いなら、以下のようにUIDefaults#putでPainterを設定する方法もあります。

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.synth.*;
import com.sun.java.swing.Painter; // JDK6
//import javax.swing.Painter; // 1.7.0 b57
public class BackgroundPainterTest {
  private final JDesktopPane desktop = new JDesktopPane();
  public JComponent makeUI() {
    JPanel p1 = new JPanel();
    p1.setOpaque(false);
    JPanel p2 = new JPanel() {
      public void paintComponent(Graphics g) {
        g.setColor(new Color(100,50,50,100));
        g.fillRect(0,0,getWidth(), getHeight());
      }
    };
    UIDefaults d = new UIDefaults();
    d.put("InternalFrame[Enabled].backgroundPainter", new Painter() {
      public void paint(Graphics2D g, Object o, int w, int h) {
        g.setColor(new Color(100,200,100,100));
        g.fillRoundRect(0,0,w-1,h-1,15,15);
      }
    });
    d.put("InternalFrame[Enabled+WindowFocused].backgroundPainter", new Painter() {
      public void paint(Graphics2D g, Object o, int w, int h) {
        g.setColor(new Color(100,250,120,100));
        g.fillRoundRect(0,0,w-1,h-1,15,15);
      }
    });
    createFrame(p1, d, 0); createFrame(p2, d, 1);
    JPanel p = new JPanel(new BorderLayout());
    p.add(desktop);
    p.setPreferredSize(new Dimension(320, 240));
    return p;
  }
  protected JInternalFrame createFrame(JPanel panel, UIDefaults d, int idx) {
    MyInternalFrame frame = new MyInternalFrame();
    frame.putClientProperty("Nimbus.Overrides", d);
    frame.putClientProperty("Nimbus.Overrides.InheritDefaults", false);
    frame.setOpaque(false);
    if(panel!=null) {
      frame.setContentPane(panel);
      panel.add(new JLabel("label"));
      panel.add(new JButton("button"));
      frame.getRootPane().setOpaque(false);
    }
    desktop.add(frame);
    frame.setVisible(true);
    frame.setLocation(10+60*idx, 10+40*idx);
    desktop.getDesktopManager().activateFrame(frame);
    return frame;
  }
  static class MyInternalFrame extends JInternalFrame{
    public MyInternalFrame() {
      super("title", true, true, true, true);
      setSize(160, 100);
    }
  }
  public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
      public void run() { createAndShowGUI(); }
    });
  }
  public static void createAndShowGUI() {
    try{
      for(UIManager.LookAndFeelInfo laf: UIManager.getInstalledLookAndFeels())
        if("Nimbus".equals(laf.getName())) UIManager.setLookAndFeel(laf.getClassName());
    }catch(Exception e) {
      e.printStackTrace();
    }
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    frame.getContentPane().add(new BackgroundPainterTest().makeUI());
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  }
}

参考リンク

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