libjava/gnu/java/awt/peer/gtk/GtkContainerPeer.java

   1 /* GtkContainerPeer.java -- Implements ContainerPeer with GTK
   2    Copyright (C) 1998, 1999 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 gnu.java.awt.peer.gtk;
  40
  41 import java.awt.Color;
  42 import java.awt.Component;
  43 import java.awt.Container;
  44 import java.awt.Font;
  45 import java.awt.Graphics;
  46 import java.awt.Insets;
  47 import java.awt.Window;
  48 import java.awt.peer.ComponentPeer;
  49 import java.awt.peer.ContainerPeer;
  50
  51 public class GtkContainerPeer extends GtkComponentPeer
  52   implements ContainerPeer
  53 {
  54   Container c;
  55   boolean isValidating;
  56
  57   public GtkContainerPeer(Container c)
  58   {
  59     super (c);
  60     this.c = c;
  61   }
  62
  63   public void beginValidate ()
  64   {
  65     isValidating = true;
  66   }
  67
  68   public void endValidate ()
  69   {
  70     Component parent = awtComponent.getParent ();
  71
  72     // Only set our parent on the GTK side if our parent on the AWT
  73     // side is not showing.  Otherwise the gtk peer will be shown
  74     // before we've had a chance to position and size it properly.
  75     if (parent != null && parent.isShowing ())
  76       {
  77         Component[] components = ((Container) awtComponent).getComponents ();
  78         int ncomponents = components.length;
  79
  80         for (int i = 0; i < ncomponents; i++)
  81           {
  82             ComponentPeer peer = components[i].getPeer ();
  83
  84             // Skip lightweight peers.
  85             if (peer instanceof GtkComponentPeer)
  86               ((GtkComponentPeer) peer).setParentAndBounds ();
  87           }
  88
  89         // GTK windows don't have parents.
  90         if (!(awtComponent instanceof Window))
  91           setParentAndBounds ();
  92       }
  93
  94     isValidating = false;
  95   }
  96
  97   public Insets getInsets()
  98   {
  99     return insets;
 100   }
 101
 102   public Insets insets()
 103   {
 104     return getInsets ();
 105   }
 106
 107   public void setBounds (int x, int y, int width, int height)
 108   {
 109     super.setBounds (x, y, width, height);
 110   }
 111
 112   public void setFont(Font f)
 113   {
 114     super.setFont(f);
 115     Component[] components = ((Container) awtComponent).getComponents();
 116     for (int i = 0; i < components.length; i++)
 117       {
 118         GtkComponentPeer peer = (GtkComponentPeer) components[i].getPeer();
 119         if (peer != null && ! peer.awtComponent.isFontSet())
 120           peer.setFont(f);
 121       }
 122   }
 123
 124   public Graphics getGraphics ()
 125   {
 126     return super.getGraphics();
 127   }
 128
 129   public void beginLayout () { }
 130   public void endLayout () { }
 131   public boolean isPaintPending () { return false; }
 132
 133   public void setBackground (Color c)
 134   {
 135     super.setBackground(c);
 136
 137     Object components[] = ((Container) awtComponent).getComponents();
 138     for (int i = 0; i < components.length; i++)
 139       {
 140         Component comp = (Component) components[i];
 141
 142         // If the child's background has not been explicitly set yet,
 143         // it should inherit this container's background. This makes the
 144         // child component appear as if it has a transparent background.
 145         // Note that we do not alter the background property of the child,
 146         // but only repaint the child with the parent's background color.
 147         if (!comp.isBackgroundSet() && comp.getPeer() != null)
 148           comp.getPeer().setBackground(c);
 149       }
 150   }
 151 }