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

   1 /* GtkTextFieldPeer.java -- Implements TextFieldPeer with GTK
   2    Copyright (C) 1998, 1999, 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 gnu.java.awt.peer.gtk;
  40
  41 import java.awt.AWTEvent;
  42 import java.awt.Dimension;
  43 import java.awt.Font;
  44 import java.awt.FontMetrics;
  45 import java.awt.TextField;
  46 import java.awt.event.KeyEvent;
  47 import java.awt.peer.TextFieldPeer;
  48
  49 public class GtkTextFieldPeer extends GtkTextComponentPeer
  50   implements TextFieldPeer
  51 {
  52   native void create (int width);
  53   native void gtkWidgetSetBackground (int red, int green, int blue);
  54   native void gtkWidgetSetForeground (int red, int green, int blue);
  55
  56   void create ()
  57   {
  58     Font f = awtComponent.getFont ();
  59
  60     // By default, Sun sets a TextField's font when its peer is
  61     // created.  If f != null then the peer's font is set by
  62     // GtkComponent.create.
  63     if (f == null)
  64       {
  65         f = new Font ("Dialog", Font.PLAIN, 12);
  66         awtComponent.setFont (f);
  67       }
  68
  69     FontMetrics fm = getFontMetrics (f);
  70
  71     TextField tf = ((TextField) awtComponent);
  72     int cols = tf.getColumns ();
  73
  74     int text_width = cols * fm.getMaxAdvance ();
  75
  76     create (text_width);
  77
  78     setEditable (tf.isEditable ());
  79   }
  80
  81   native int gtkEntryGetBorderWidth ();
  82
  83   native void gtkWidgetModifyFont (String name, int style, int size);
  84
  85   public GtkTextFieldPeer (TextField tf)
  86   {
  87     super (tf);
  88
  89     if (tf.echoCharIsSet ())
  90       setEchoChar (tf.getEchoChar ());
  91   }
  92
  93   public Dimension getMinimumSize (int cols)
  94   {
  95     return minimumSize (cols);
  96   }
  97
  98   public Dimension getPreferredSize (int cols)
  99   {
 100     return preferredSize (cols);
 101   }
 102
 103   public native void setEchoChar (char c);
 104
 105   // Deprecated
 106   public Dimension minimumSize (int cols)
 107   {
 108     int dim[] = new int[2];
 109
 110     gtkWidgetGetPreferredDimensions (dim);
 111
 112     Font f = awtComponent.getFont ();
 113     if (f == null)
 114       return new Dimension (2 * gtkEntryGetBorderWidth (), dim[1]);
 115
 116     FontMetrics fm = getFontMetrics (f);
 117
 118     int text_width = cols * fm.getMaxAdvance ();
 119
 120     int width = text_width + 2 * gtkEntryGetBorderWidth ();
 121
 122     return new Dimension (width, dim[1]);
 123   }
 124
 125   public Dimension preferredSize (int cols)
 126   {
 127     int dim[] = new int[2];
 128
 129     gtkWidgetGetPreferredDimensions (dim);
 130
 131     Font f = awtComponent.getFont ();
 132     if (f == null)
 133       return new Dimension (2 * gtkEntryGetBorderWidth (), dim[1]);
 134
 135     FontMetrics fm = getFontMetrics (f);
 136
 137     int text_width = cols * fm.getMaxAdvance ();
 138
 139     int width = text_width + 2 * gtkEntryGetBorderWidth ();
 140
 141     return new Dimension (width, dim[1]);
 142   }
 143
 144   public void setEchoCharacter (char c)
 145   {
 146     setEchoChar (c);
 147   }
 148
 149   public void handleEvent (AWTEvent e)
 150   {
 151     if (e.getID () == KeyEvent.KEY_PRESSED)
 152       {
 153         KeyEvent ke = (KeyEvent) e;
 154
 155         if (!ke.isConsumed ()
 156             && ke.getKeyCode () == KeyEvent.VK_ENTER)
 157           postActionEvent (getText (), ke.getModifiersEx ());
 158       }
 159
 160     super.handleEvent (e);
 161   }
 162 }