gtkcomponentpeer.java

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				   new Rectangle(x, y, width, height)));
    else
      RepaintTimerTask.schedule(tm, x, y, width, height, awtComponent);
  }

  /**
   * Used for scheduling delayed paint updates on the event queue.
   */
  private static class RepaintTimerTask extends TimerTask
  {
    private static final Timer repaintTimer = new Timer(true);

    private int x, y, width, height;
    private Component awtComponent;

    RepaintTimerTask(Component c, int x, int y, int width, int height)
    {
      this.x = x;
      this.y = y;
      this.width = width;
      this.height = height;
      this.awtComponent = c;
    }

    public void run()
    {
      q().postEvent (new PaintEvent (awtComponent, PaintEvent.UPDATE,
                                     new Rectangle (x, y, width, height)));
    }

    static void schedule(long tm, int x, int y, int width, int height,
			 Component c)
    {
      repaintTimer.schedule(new RepaintTimerTask(c, x, y, width, height), tm);
    }
  }

  public void requestFocus ()
  {
    gtkWidgetRequestFocus();
    postFocusEvent(FocusEvent.FOCUS_GAINED, false);
  }

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

  public void setBackground (Color c) 
  {
    gtkWidgetSetBackground (c.getRed(), c.getGreen(), c.getBlue());
  }

  native void setNativeBounds (int x, int y, int width, int height);

  public void setBounds (int x, int y, int width, int height)
  {
    int new_x = x;
    int new_y = y;

    Component parent = awtComponent.getParent ();
    
    // Heavyweight components that are children of one or more
    // lightweight containers have to be handled specially.  Because
    // calls to GLightweightPeer.setBounds do nothing, GTK has no
    // knowledge of the lightweight containers' positions.  So we have
    // to add the offsets manually when placing a heavyweight
    // component within a lightweight container.  The lightweight
    // container may itself be in a lightweight container and so on,
    // so we need to continue adding offsets until we reach a
    // container whose position GTK knows -- that is, the first
    // non-lightweight.
    Insets i;    
    while (parent.isLightweight())
      {
        i = ((Container) parent).getInsets();
        
        new_x += parent.getX() + i.left;
        new_y += parent.getY() + i.top;
        
        parent = parent.getParent();
      }
    // We only need to convert from Java to GTK coordinates if we're
    // placing a heavyweight component in a Window.
    if (parent instanceof Window)
      {
        GtkWindowPeer peer = (GtkWindowPeer) parent.getPeer ();
        // important: we want the window peer's insets here, not the
        // window's, since user sub-classes of Window can override
        // getInset and we only want to correct for the frame borders,
        // not for any user-defined inset values
        Insets insets = peer.getInsets ();

        int menuBarHeight = 0;
        if (peer instanceof GtkFramePeer)
          menuBarHeight = ((GtkFramePeer) peer).getMenuBarHeight ();
        
        new_x -= insets.left;
        new_y -= insets.top;
        new_y += menuBarHeight;
      }

    setNativeBounds (new_x, new_y, width, height);

    // If the height or width were (or are now) smaller than zero
    // then we want to adjust the visibility.
    setVisible(awtComponent.isVisible());
  }

  void setCursor ()
  {
    setCursor (awtComponent.getCursor ());
  }

  public void setCursor (Cursor cursor) 
  {
    if (Thread.currentThread() == GtkToolkit.mainThread)
      gtkWidgetSetCursorUnlocked (cursor.getType ());
    else
      gtkWidgetSetCursor (cursor.getType ());
  }

  public void setEnabled (boolean b)
  {
    gtkWidgetSetSensitive (b);
  }

  public void setFont (Font f)
  {
    // FIXME: This should really affect the widget tree below me.
    // Currently this is only handled if the call is made directly on
    // a text widget, which implements setFont() itself.
    gtkWidgetModifyFont(f.getName(), f.getStyle(), f.getSize());
  }

  public void setForeground (Color c) 
  {
    gtkWidgetSetForeground (c.getRed(), c.getGreen(), c.getBlue());
  }

  public Color getForeground ()
  {
    int rgb[] = gtkWidgetGetForeground ();
    return new Color (rgb[0], rgb[1], rgb[2]);
  }

  public Color getBackground ()
  {
    int rgb[] = gtkWidgetGetBackground ();
    return new Color (rgb[0], rgb[1], rgb[2]);
  }

  public native void setVisibleNative (boolean b);
  public native void setVisibleNativeUnlocked (boolean b);

  public void setVisible (boolean b)
  {
    // Only really set visible when component is bigger than zero pixels.
    if (b)
      {
        Rectangle bounds = awtComponent.getBounds();
	b = (bounds.width > 0) && (bounds.height > 0);
      }

    if (Thread.currentThread() == GtkToolkit.mainThread)
      setVisibleNativeUnlocked (b);
    else
      setVisibleNative (b);
  }

  public void hide ()
  {
    setVisible (false);
  }

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

  protected void postMouseEvent(int id, long when, int mods, int x, int y, 
				int clickCount, boolean popupTrigger) 
  {
    q().postEvent(new MouseEvent(awtComponent, id, when, mods, x, y, 
			       clickCount, popupTrigger));
  }

  /**
   * Callback for component_scroll_cb.
   */
  protected void postMouseWheelEvent(int id, long when, int mods,
				     int x, int y, int clickCount,
				     boolean popupTrigger,
				     int type, int amount, int rotation) 
  {
    q().postEvent(new MouseWheelEvent(awtComponent, id, when, mods,
				      x, y, clickCount, popupTrigger,
				      type, amount, rotation));
  }

  protected void postExposeEvent (int x, int y, int width, int height)
  {
    q().postEvent (new PaintEvent (awtComponent, PaintEvent.PAINT,
                                   new Rectangle (x, y, width, height)));
  }

  protected void postKeyEvent (int id, long when, int mods,
                               int keyCode, char keyChar, int keyLocation)
  {
    KeyEvent keyEvent = new KeyEvent (awtComponent, id, when, mods,
                                      keyCode, keyChar, keyLocation);

    EventQueue q = q();

    // Also post a KEY_TYPED event if keyEvent is a key press that
    // doesn't represent an action or modifier key.
    if (keyEvent.getID () == KeyEvent.KEY_PRESSED
        && (!keyEvent.isActionKey ()
            && keyCode != KeyEvent.VK_SHIFT
            && keyCode != KeyEvent.VK_CONTROL
            && keyCode != KeyEvent.VK_ALT))
      {
        synchronized(q)
	  {
	    q.postEvent(keyEvent);
	    keyEvent = new KeyEvent(awtComponent, KeyEvent.KEY_TYPED, when,
				    mods, KeyEvent.VK_UNDEFINED, keyChar,
				    keyLocation);
	    q.postEvent(keyEvent);
          }
      }
    else
      q.postEvent(keyEvent);
  }

  protected void postFocusEvent (int id, boolean temporary)
  {
    q().postEvent (new FocusEvent (awtComponent, id, temporary));
  }

  protected void postItemEvent (Object item, int stateChange)
  {
    q().postEvent (new ItemEvent ((ItemSelectable)awtComponent, 
				ItemEvent.ITEM_STATE_CHANGED,
				item, stateChange));
  }

  protected void postTextEvent ()
  {
    q().postEvent (new TextEvent (awtComponent, TextEvent.TEXT_VALUE_CHANGED));
  }

  public GraphicsConfiguration getGraphicsConfiguration ()
  {
    // FIXME: just a stub for now.
    return null;
  }

  public void setEventMask (long mask)
  {
    // FIXME: just a stub for now.
  }

  public boolean isFocusable ()
  {
    return false;
  }

  public boolean requestFocus (Component source, boolean b1, 
                               boolean b2, long x)
  {
    return false;
  }

  public boolean isObscured ()
  {
    return false;
  }

  public boolean canDetermineObscurity ()
  {
    return false;
  }

  public void coalescePaintEvent (PaintEvent e)
  {
    
  }

  public void updateCursorImmediately ()
  {
    if (awtComponent.getCursor() != null)
      setCursor(awtComponent.getCursor());
  }

  public boolean handlesWheelScrolling ()
  {
    return false;
  }

  // Convenience method to create a new volatile image on the screen
  // on which this component is displayed.
  public VolatileImage createVolatileImage (int width, int height)
  {
    return new GtkVolatileImage (width, height);
  }

  // Creates buffers used in a buffering strategy.
  public void createBuffers (int numBuffers, BufferCapabilities caps)
    throws AWTException
  {
    // numBuffers == 2 implies double-buffering, meaning one back
    // buffer and one front buffer.
    if (numBuffers == 2)
      backBuffer = new GtkVolatileImage(awtComponent.getWidth(),
					awtComponent.getHeight(),
					caps.getBackBufferCapabilities());
    else
      throw new AWTException("GtkComponentPeer.createBuffers:"
			     + " multi-buffering not supported");
    this.caps = caps;
  }

  // Return the back buffer.
  public Image getBackBuffer ()
  {
    return backBuffer;
  }

  // FIXME: flip should be implemented as a fast native operation
  public void flip (BufferCapabilities.FlipContents contents)
  {
    getGraphics().drawImage(backBuffer,
			    awtComponent.getWidth(),
			    awtComponent.getHeight(),
			    null);

    // create new back buffer and clear it to the background color.
    if (contents == BufferCapabilities.FlipContents.BACKGROUND)
	{
	  backBuffer = createVolatileImage(awtComponent.getWidth(),
					   awtComponent.getHeight());
	  backBuffer.getGraphics().clearRect(0, 0,
					     awtComponent.getWidth(),
					     awtComponent.getHeight());
	}
    // FIXME: support BufferCapabilities.FlipContents.PRIOR
  }

  // Release the resources allocated to back buffers.
  public void destroyBuffers ()
  {
    backBuffer.flush();
  }
  
  public String toString ()
  {
    return "peer of " + awtComponent.toString();
  }
  public Rectangle getBounds()
  {
      // FIXME: implement
    return null;
  }
  public void reparent(ContainerPeer parent)
  {
    // FIXME: implement
  
  }
  public void setBounds(int x, int y, int width, int height, int z)
  {
    // FIXME: implement
      setBounds (x, y, width, height);
   
  }
  public boolean isReparentSupported()
  {
    // FIXME: implement

    return false;
  }
  public void layout()
  {
    // FIXME: implement
 
  }
}