gtkcomponentpeer.java

来自「Mac OS X 10.4.9 for x86 Source Code gcc」· Java 代码 · 共 631 行 · 第 1/2 页

                                   ke.getKeyCode (), ke.getKeyLocation ());
        break;
      }
  }
  
  public boolean isFocusTraversable () 
  {
    return true;
  }

  public Dimension minimumSize () 
  {
    int dim[] = new int[2];

    gtkWidgetGetPreferredDimensions (dim);

    return new Dimension (dim[0], dim[1]);
  }

  public void paint (Graphics g)
  {
  }

  public Dimension preferredSize ()
  {
    int dim[] = new int[2];

    gtkWidgetGetPreferredDimensions (dim);

    return new Dimension (dim[0], dim[1]);
  }

  public boolean prepareImage (Image image, int width, int height,
			       ImageObserver observer) 
  {
    GtkImage i = (GtkImage) image;

    if (i.isLoaded ()) return true;

    class PrepareImage extends Thread
    {
      GtkImage image;
      ImageObserver observer;

      PrepareImage (GtkImage image, ImageObserver observer)
      {
	this.image = image;
	image.setObserver (observer);
      }
      
      public void run ()
      {
	image.source.startProduction (image);
      }
    }

    new PrepareImage (i, observer).start ();
    return false;
  }

  public void print (Graphics g) 
  {
    throw new RuntimeException ();
  }

  public void repaint (long tm, int x, int y, int width, int height)
  {
    if (x == 0 && y == 0 && width == 0 && height == 0)
      return;

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

  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)
  {
    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.
    boolean lightweightChild = false;
    Insets i;
    while (parent.isLightweight ())
      {
	lightweightChild = true;

	i = ((Container) parent).getInsets ();

	x += parent.getX () + i.left;
	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 && !lightweightChild)
      {
	Insets insets = ((Window) parent).getInsets ();
        GtkWindowPeer peer = (GtkWindowPeer) parent.getPeer ();
        int menuBarHeight = 0;
        if (peer instanceof GtkFramePeer)
          menuBarHeight = ((GtkFramePeer) peer).getMenuBarHeight ();

        // Convert from Java coordinates to GTK coordinates.
        setNativeBounds (x - insets.left, y - insets.top + menuBarHeight,
                         width, height);
      }
    else
      setNativeBounds (x, y, width, height);
  }

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

  public void setCursor (Cursor cursor) 
  {
    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 void setVisible (boolean b)
  {
    if (b)
      show ();
    else
      hide ();
  }

  public native void hide ();
  public native void show ();

  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));
  }

  protected void postExposeEvent (int x, int y, int width, int height)
  {
    if (!isInRepaint)
      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);

    // 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);
            q().postEvent (new KeyEvent (awtComponent, KeyEvent.KEY_TYPED, when, mods,
                                        KeyEvent.VK_UNDEFINED, keyChar, keyLocation));
          }
      }
    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));
  }

  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 ()
  {
    
  }

  public VolatileImage createVolatileImage (int width, int height)
  {
    return null;
  }

  public boolean handlesWheelScrolling ()
  {
    return false;
  }

  public void createBuffers (int x, BufferCapabilities capabilities)
    throws java.awt.AWTException

  {
    
  }

  public Image getBackBuffer ()
  {
    return null;
  }

  public void flip (BufferCapabilities.FlipContents contents)
  {
    
  }

  public void destroyBuffers ()
  {
    
  }
}