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

   1 /* GtkScrollPanePeer.java -- Implements ScrollPanePeer with GTK
   2    Copyright (C) 1998, 1999, 2005  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.Adjustable;
  42 import java.awt.Dimension;
  43 import java.awt.ScrollPane;
  44 import java.awt.peer.ScrollPanePeer;
  45
  46 public class GtkScrollPanePeer extends GtkContainerPeer
  47   implements ScrollPanePeer
  48 {
  49   native void create (int width, int height);
  50
  51   void create ()
  52   {
  53     create (awtComponent.getWidth (), awtComponent.getHeight ());
  54   }
  55
  56   // native void gtkScrolledWindowSetScrollPosition(int x, int y);
  57   native void gtkScrolledWindowSetHScrollIncrement (int u);
  58   native void gtkScrolledWindowSetVScrollIncrement (int u);
  59
  60   public GtkScrollPanePeer (ScrollPane sp)
  61   {
  62     super (sp);
  63
  64     setPolicy (sp.getScrollbarDisplayPolicy ());
  65   }
  66
  67   native void setPolicy (int policy);
  68   public void childResized (int width, int height)
  69   {
  70     int dim[] = new int[2];
  71
  72     gtkWidgetGetDimensions (dim);
  73
  74     // If the child is in this range, GTK adds both scrollbars, but
  75     // the AWT doesn't.  So set the peer's scroll policy to
  76     // GTK_POLICY_NEVER.
  77     if ((width > dim[0] - getVScrollbarWidth ()
  78          && width <= dim[0])
  79         && (height > dim[1] - getHScrollbarHeight ()
  80             && height <= dim[1]))
  81       setPolicy (ScrollPane.SCROLLBARS_NEVER);
  82     else
  83       setPolicy (((ScrollPane) awtComponent).getScrollbarDisplayPolicy ());
  84   }
  85
  86   public native int getHScrollbarHeight();
  87   public native int getVScrollbarWidth();
  88   public native void setScrollPosition(int x, int y);
  89
  90   public Dimension getPreferredSize ()
  91   {
  92     return awtComponent.getSize();
  93   }
  94
  95   public void setUnitIncrement (Adjustable adj, int u)
  96   {
  97     if (adj.getOrientation()==Adjustable.HORIZONTAL)
  98       gtkScrolledWindowSetHScrollIncrement (u);
  99     else
 100       gtkScrolledWindowSetVScrollIncrement (u);
 101   }
 102
 103   public void setValue (Adjustable adj, int v)
 104   {
 105 //      System.out.println("SPP: setVal: "+adj+":"+v);
 106 //      Point p=myScrollPane.getScrollPosition ();
 107 //      if (adj.getOrientation()==Adjustable.HORIZONTAL)
 108 //        gtkScrolledWindowSetScrollPosition (v,p.y);
 109 //      else
 110 //        gtkScrolledWindowSetScrollPosition (p.x,v);
 111 //      adj.setValue(v);
 112   }
 113 }