toolchain/gcc/libjava/java/awt/peer/ComponentPeer.java

   1 /* ComponentPeer.java -- Toplevel component peer
   2    Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package java.awt.peer;
  40
  41 import java.awt.AWTEvent;
  42 import java.awt.AWTException;
  43 import java.awt.BufferCapabilities;
  44 import java.awt.Color;
  45 import java.awt.Component;
  46 import java.awt.Cursor;
  47 import java.awt.Dimension;
  48 import java.awt.Font;
  49 import java.awt.FontMetrics;
  50 import java.awt.Graphics;
  51 import java.awt.GraphicsConfiguration;
  52 import java.awt.Image;
  53 import java.awt.Point;
  54 import java.awt.Toolkit;
  55 import java.awt.event.PaintEvent;
  56 import java.awt.image.ColorModel;
  57 import java.awt.image.ImageObserver;
  58 import java.awt.image.ImageProducer;
  59 import java.awt.image.VolatileImage;
  60
  61 public interface ComponentPeer
  62 {
  63   int checkImage(Image img, int width, int height,
  64                  ImageObserver ob);
  65   Image createImage(ImageProducer prod);
  66   Image createImage(int width, int height);
  67   void disable();
  68   void dispose();
  69   void enable();
  70   ColorModel getColorModel();
  71   FontMetrics getFontMetrics(Font f);
  72   Graphics getGraphics();
  73   Point getLocationOnScreen();
  74   Dimension getMinimumSize();
  75   Dimension getPreferredSize();
  76   Toolkit getToolkit();
  77   void handleEvent(AWTEvent e);
  78   void hide();
  79
  80   /**
  81    * Part of the earlier 1.1 API, replaced by isFocusable().
  82    */
  83   boolean isFocusTraversable();
  84   boolean isFocusable();
  85   Dimension minimumSize();
  86   Dimension preferredSize();
  87   void paint(Graphics graphics);
  88   boolean prepareImage(Image img, int width, int height,
  89                               ImageObserver ob);
  90   void print(Graphics graphics);
  91   void repaint(long tm, int x, int y, int width, int height);
  92
  93   /**
  94    * Part of the earlier 1.1 API, apparently replaced by argument
  95    * form of the same method.
  96    */
  97   void requestFocus();
  98   boolean requestFocus (Component source, boolean bool1, boolean bool2, long x);
  99
 100   void reshape(int x, int y, int width, int height);
 101   void setBackground(Color color);
 102   void setBounds(int x, int y, int width, int height);
 103
 104   /**
 105    * Part of the earlier 1.1 API, apparently no longer needed.
 106    */
 107   void setCursor(Cursor cursor);
 108
 109   void setEnabled(boolean enabled);
 110   void setFont(Font font);
 111   void setForeground(Color color);
 112   void setVisible(boolean visible);
 113   void show();
 114
 115   /**
 116    * Get the graphics configuration of the component. The color model
 117    * of the component can be derived from the configuration.
 118    */
 119   GraphicsConfiguration getGraphicsConfiguration();
 120
 121   /**
 122    * Part of an older API, no longer needed.
 123    */
 124   void setEventMask (long mask);
 125
 126   // Methods below are introduced since 1.1
 127   boolean isObscured();
 128   boolean canDetermineObscurity();
 129   void coalescePaintEvent(PaintEvent e);
 130   void updateCursorImmediately();
 131   VolatileImage createVolatileImage(int width, int height);
 132   boolean handlesWheelScrolling();
 133   void createBuffers(int x, BufferCapabilities capabilities) throws AWTException;
 134   Image getBackBuffer();
 135   void flip(BufferCapabilities.FlipContents contents);
 136   void destroyBuffers();
 137
 138 }