qtcomponentpeer.java

gcc的组建

  }

  protected void hideEvent()
  {
    ComponentEvent e = new ComponentEvent(owner, 
					  ComponentEvent.COMPONENT_HIDDEN);
    QtToolkit.eventQueue.postEvent(e);
  }

  // ************ Public methods *********************

  /** Classpath-specific method */
  public void setEventMask(long x)
  {
    eventMask = x;
  }


  public boolean canDetermineObscurity()
  {
    return true;
  } 

  public int checkImage(Image img,
			int w,
			int h,
			ImageObserver o)
  {
    return toolkit.checkImage(img, w, h, o);
  }

  public void createBuffers(int numBuffers, BufferCapabilities caps)
    throws AWTException 
  {
    // FIXME
  }

  public Image createImage(ImageProducer producer)
  {
    return toolkit.createImage(producer);
  }

  public Image createImage(int width, int height)
  {
    return new QtImage(width, height);
  }

  public void coalescePaintEvent(PaintEvent e)
  {
    // FIXME
  }

  public VolatileImage createVolatileImage(int w, int h)
  {
    return new QtVolatileImage( w, h );
  }

  public void destroyBuffers()
  {
    // FIXME
  }

  public void disable()
  {
    setEnabled(false);
  }

  public void dispose()
  {
    disposeNative();
    if( backBuffer != null )
      backBuffer.dispose();
  }

  public void enable()
  {
    setEnabled(true);
  }

  public void finalize()
  {
    dispose();
  }

  public void flip(BufferCapabilities.FlipContents contents)
  {
  }

  public Image getBackBuffer()
  {
    return backBuffer;
  }

  public ColorModel getColorModel()
  {
    return toolkit.getColorModel();
  }

  public FontMetrics getFontMetrics(Font font)
  {
    return new QtFontMetrics( font, getGraphics() );
  }

  public Graphics getGraphics()
  {
    if( backBuffer == null )
      { 
	Rectangle r = owner.getBounds();
	backBuffer = new QtImage( r.width, r.height );
      }
    return backBuffer.getDirectGraphics( this );
  }

  public GraphicsConfiguration getGraphicsConfiguration()
  {
    int id = whichScreen(); // get the ID of the screen the widget is on.
    GraphicsDevice[] devs = QtToolkit.graphicsEnv.getScreenDevices();
    return devs[id].getDefaultConfiguration();
  }

  public Point getLocationOnScreen()
  {
    Point p = new Point();
    synchronized( p ) 
      {
	getLocationOnScreenNative( p );
	try
	  {	
	    p.wait(); // Wait for the thing to be created.
	  }
	catch(InterruptedException e)
	  {
	  }
      }
    return p;
  }

  private native void getSizeNative(Dimension d, boolean preferred);

  private Dimension getSize(boolean preferred)
  {
    Dimension d = new Dimension();
    synchronized( d ) 
      {
	getSizeNative(d, preferred);
	try
	  {	
	    d.wait(); // Wait for the thing to be created.
	  }
	catch(InterruptedException e)
	  {
	  }
      }
    return d;
  }

  public Dimension getMinimumSize()
  {
    return getSize( false );
  }
 
  public Dimension getPreferredSize()
  {
    return getSize( true );
  }

  public Toolkit getToolkit()
  {
    return toolkit;
  }

  public native boolean handlesWheelScrolling();
   
  public void hide()
  {
    setVisible(false);
  }

  public native boolean isFocusable();

  public boolean isFocusTraversable()
  {
    // FIXME
    return false;
  }

  public native boolean isObscured();

  public Dimension minimumSize()
  {
    return getMinimumSize();
  }

  public Dimension preferredSize()
  {
    return getPreferredSize();
  }

  public native void requestFocus();

  public boolean requestFocus (Component source, boolean bool1, 
			       boolean bool2, long x)
  {
    // FIXME
    return true;
  }

  public void reshape(int x,
		      int y,
		      int width,
		      int height)
  {
    setBounds( x, y, width, height );
  }

  public void setBackground(Color c)
  {
    if(c == null && !settingUp)
      return;
    setGround(c.getRed(), c.getGreen(), c.getBlue(), false);
  }

  public void setBounds(int x, int y, int width, int height)
  {
    if( ignoreResize )
      return;
    updateBackBuffer(width, height);
    QtToolkit.repaintThread.queueComponent(this);
    setBoundsNative(x, y, width, height);
  }

  public void setCursor(Cursor cursor)
  {
    if (cursor != null)
      setCursor(cursor.getType());
  }

  public native void setEnabled(boolean b);

  public void setFont(Font f)
  {
    if( f == null || f.getPeer() == null)
      throw new IllegalArgumentException("Null font.");
    setFontNative( (QtFontPeer)f.getPeer() );
  }

  public void setForeground(Color c)
  {
    if(c == null && !settingUp)
      return;
    setGround(c.getRed(), c.getGreen(), c.getBlue(), true);
  }
  
  public native void setVisible(boolean b);

  public void show()
  {
    setVisible(true);
  }

  public void handleEvent (AWTEvent e)
  {
    int eventID = e.getID();
    Rectangle r;

    switch (eventID)
      {
      case ComponentEvent.COMPONENT_SHOWN:
	QtToolkit.repaintThread.queueComponent(this);
        break;
      case PaintEvent.PAINT:
      case PaintEvent.UPDATE:	
	r = ((PaintEvent)e).getUpdateRect();
	QtToolkit.repaintThread.queueComponent(this, r.x, r.y,
					       r.width, r.height);
        break;
      case KeyEvent.KEY_PRESSED:
	break;
      case KeyEvent.KEY_RELEASED:
	break;
      }
  }

  /**
   * paint() is called back from the native side in response to a native
   * repaint event.
   */  
  public void paint(Graphics g)
  {
    Rectangle r = g.getClipBounds();

    if (backBuffer != null)
      backBuffer.drawPixelsScaledFlipped ((QtGraphics) g, 
					  0, 0, 0, /* bg colors */
					  false, false, /* no flipping */
					  r.x, r.y, r.width, r.height,
					  r.x, r.y, r.width, r.height,
					  false ); /* no compositing */
  }

  public void paintBackBuffer() throws InterruptedException
  {
    if( backBuffer != null )
      {
	backBuffer.clear();
	Graphics2D bbg = (Graphics2D)backBuffer.getGraphics();
	owner.paint(bbg); 
	bbg.dispose();
      }
  }

  public void paintBackBuffer(int x, int y, int w, int h) 
    throws InterruptedException
  {
    if( backBuffer != null )
      {
	Graphics2D bbg = (Graphics2D)backBuffer.getGraphics();
	bbg.setBackground( getNativeBackground() );
	bbg.clearRect(x, y, w, h);
	bbg.setClip(x, y, w, h);
	owner.paint(bbg); 
	bbg.dispose();
      }
  }

  public boolean prepareImage(Image img,
			      int w,
			      int h,
			      ImageObserver o)
  {
    return toolkit.prepareImage(img, w, h, o);
  }
  
  public void print(Graphics g)
  {
    // FIXME
  }

  /**
   * Schedules a timed repaint.
   */
  public void repaint(long tm,
		      int x,
		      int y,
		      int w,
		      int h)
  {
    if( tm <= 0 )
      {
	QtToolkit.repaintThread.queueComponent(this, x, y, w, h);
	return;
      }      
    Timer t = new Timer();
    t.schedule(new RepaintTimerTask(this, x, y, w, h), tm);
  }

  /**
   * Update the cursor (note that setCursor is usually not called)
   */
  public void updateCursorImmediately()
  {
    if (owner.getCursor() != null)
      setCursor(owner.getCursor().getType());
  }

  /**
   * Timed repainter
   */
  private class RepaintTimerTask extends TimerTask 
  {    
    private int x, y, w, h;
    private QtComponentPeer peer;
    RepaintTimerTask(QtComponentPeer peer, int x, int y, int w, int h)
    { 
      this.x=x;
      this.y=y;
      this.w=w;
      this.h=h; 
      this.peer=peer;
    }
    public void run()
    { 
      QtToolkit.repaintThread.queueComponent(peer, x, y, w, h);
    }
  }

  public native Rectangle getBounds();

  public void reparent(ContainerPeer parent)
  {
    if(!(parent instanceof QtContainerPeer))
      throw new IllegalArgumentException("Illegal peer.");
    reparentNative((QtContainerPeer)parent);
  }

  public void setBounds(int x, int y, int width, int height, int z)
  {
    // TODO Auto-generated method stub
    
  }

  public boolean isReparentSupported()
  {
    return true;
  }

  // What does this do, anyway?
  public void layout()
  {
    // TODO Auto-generated method stub
  }
}