libs/gtkutil/nonmodal.h

   1 /*
   2    Copyright (C) 2001-2006, William Joseph.
   3    All Rights Reserved.
   4
   5    This file is part of GtkRadiant.
   6
   7    GtkRadiant is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    GtkRadiant is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GtkRadiant; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 #if !defined( INCLUDED_GTKUTIL_NONMODAL_H )
  23 #define INCLUDED_GTKUTIL_NONMODAL_H
  24
  25 #include <gtk/gtk.h>
  26 #include <gdk/gdkkeysyms.h>
  27
  28 #include "generic/callback.h"
  29
  30 #include "pointer.h"
  31 #include "button.h"
  32
  33 typedef struct _GtkEntry GtkEntry;
  34
  35
  36 inline gboolean escape_clear_focus_widget( GtkWidget* widget, GdkEventKey* event, gpointer data ){
  37         if ( event->keyval == GDK_KEY_Escape ) {
  38                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( widget ) ) ), NULL );
  39                 return TRUE;
  40         }
  41         return FALSE;
  42 }
  43
  44 inline void widget_connect_escape_clear_focus_widget( GtkWidget* widget ){
  45         g_signal_connect( G_OBJECT( widget ), "key_press_event", G_CALLBACK( escape_clear_focus_widget ), 0 );
  46 }
  47
  48
  49 class NonModalEntry
  50 {
  51 bool m_editing;
  52 Callback m_apply;
  53 Callback m_cancel;
  54
  55 static gboolean focus_in( GtkEntry* entry, GdkEventFocus *event, NonModalEntry* self ){
  56         self->m_editing = false;
  57         return FALSE;
  58 }
  59
  60 static gboolean focus_out( GtkEntry* entry, GdkEventFocus *event, NonModalEntry* self ){
  61         if ( self->m_editing && gtk_widget_get_visible( GTK_WIDGET(entry) ) ) {
  62                 self->m_apply();
  63         }
  64         self->m_editing = false;
  65         return FALSE;
  66 }
  67
  68 static gboolean changed( GtkEntry* entry, NonModalEntry* self ){
  69         self->m_editing = true;
  70         return FALSE;
  71 }
  72
  73 static gboolean enter( GtkEntry* entry, GdkEventKey* event, NonModalEntry* self ){
  74         if ( event->keyval == GDK_Return ) {
  75                 self->m_apply();
  76                 self->m_editing = false;
  77                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( entry ) ) ), NULL );
  78                 return TRUE;
  79         }
  80         return FALSE;
  81 }
  82
  83 static gboolean escape( GtkEntry* entry, GdkEventKey* event, NonModalEntry* self ){
  84         if ( event->keyval == GDK_Escape ) {
  85                 self->m_cancel();
  86                 self->m_editing = false;
  87                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( entry ) ) ), NULL );
  88                 return TRUE;
  89         }
  90         return FALSE;
  91 }
  92
  93 public:
  94 NonModalEntry( const Callback& apply, const Callback& cancel ) : m_editing( false ), m_apply( apply ), m_cancel( cancel ){
  95 }
  96 void connect( GtkEntry* entry ){
  97         g_signal_connect( G_OBJECT( entry ), "focus_in_event", G_CALLBACK( focus_in ), this );
  98         g_signal_connect( G_OBJECT( entry ), "focus_out_event", G_CALLBACK( focus_out ), this );
  99         g_signal_connect( G_OBJECT( entry ), "key_press_event", G_CALLBACK( enter ), this );
 100         g_signal_connect( G_OBJECT( entry ), "key_press_event", G_CALLBACK( escape ), this );
 101         g_signal_connect( G_OBJECT( entry ), "changed", G_CALLBACK( changed ), this );
 102 }
 103 };
 104
 105
 106 class NonModalSpinner
 107 {
 108 Callback m_apply;
 109 Callback m_cancel;
 110
 111 static gboolean changed( GtkSpinButton* spin, NonModalSpinner* self ){
 112         self->m_apply();
 113         return FALSE;
 114 }
 115
 116 static gboolean enter( GtkSpinButton* spin, GdkEventKey* event, NonModalSpinner* self ){
 117         if ( event->keyval == GDK_Return ) {
 118                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( spin ) ) ), NULL );
 119                 return TRUE;
 120         }
 121         return FALSE;
 122 }
 123
 124 static gboolean escape( GtkSpinButton* spin, GdkEventKey* event, NonModalSpinner* self ){
 125         if ( event->keyval == GDK_Escape ) {
 126                 self->m_cancel();
 127                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( spin ) ) ), NULL );
 128                 return TRUE;
 129         }
 130         return FALSE;
 131 }
 132
 133 public:
 134 NonModalSpinner( const Callback& apply, const Callback& cancel ) : m_apply( apply ), m_cancel( cancel ){
 135 }
 136 void connect( GtkSpinButton* spin ){
 137         guint handler = g_signal_connect( G_OBJECT( gtk_spin_button_get_adjustment( spin ) ), "value_changed", G_CALLBACK( changed ), this );
 138         g_object_set_data( G_OBJECT( spin ), "handler", gint_to_pointer( handler ) );
 139         g_signal_connect( G_OBJECT( spin ), "key_press_event", G_CALLBACK( enter ), this );
 140         g_signal_connect( G_OBJECT( spin ), "key_press_event", G_CALLBACK( escape ), this );
 141 }
 142 };
 143
 144
 145 class NonModalRadio
 146 {
 147 Callback m_changed;
 148
 149 public:
 150 NonModalRadio( const Callback& changed ) : m_changed( changed ){
 151 }
 152 void connect( GtkRadioButton* radio ){
 153         GSList* group = gtk_radio_button_get_group( radio );
 154         for (; group != 0; group = g_slist_next( group ) )
 155         {
 156                 toggle_button_connect_callback( GTK_TOGGLE_BUTTON( group->data ), m_changed );
 157         }
 158 }
 159 };
 160
 161
 162 #endif