| /* GtkCanvasPeer.java |
| Copyright (C) 1998, 1999 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package gnu.java.awt.peer.gtk; |
| |
| import java.awt.AWTEvent; |
| import java.awt.Canvas; |
| import java.awt.Dimension; |
| import java.awt.Graphics; |
| import java.awt.event.PaintEvent; |
| import java.awt.peer.CanvasPeer; |
| |
| public class GtkCanvasPeer extends GtkComponentPeer implements CanvasPeer |
| { |
| native void create (); |
| |
| public GtkCanvasPeer (Canvas c) |
| { |
| super (c); |
| } |
| |
| public Graphics getGraphics () |
| { |
| if (GtkToolkit.useGraphics2D ()) |
| return new GdkGraphics2D (this); |
| else |
| return new GdkGraphics (this); |
| } |
| |
| public void handleEvent (AWTEvent event) |
| { |
| int id = event.getID(); |
| |
| switch (id) |
| { |
| case PaintEvent.PAINT: |
| case PaintEvent.UPDATE: |
| { |
| try |
| { |
| Graphics g = getGraphics (); |
| g.setClip (((PaintEvent)event).getUpdateRect()); |
| |
| if (id == PaintEvent.PAINT) |
| awtComponent.paint (g); |
| else |
| awtComponent.update (g); |
| |
| g.dispose (); |
| } |
| catch (InternalError e) |
| { |
| System.err.println (e); |
| } |
| } |
| break; |
| } |
| } |
| |
| /* Preferred size for a drawing widget is always what the user requested */ |
| public Dimension getPreferredSize () |
| { |
| return awtComponent.getSize (); |
| } |
| } |