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/gtkwindow.h>
  26 #include <gtk/gtkspinbutton.h>
  27 #include <gtk/gtkradiobutton.h>
  28 #include <gdk/gdkkeysyms.h>
  29
  30 #include "generic/callback.h"
  31
  32 #include "pointer.h"
  33 #include "button.h"
  34
  35 typedef struct _GtkEntry GtkEntry;
  36
  37
  38 inline gboolean escape_clear_focus_widget( GtkWidget* widget, GdkEventKey* event, gpointer data ){
  39         if ( event->keyval == GDK_Escape ) {
  40                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( widget ) ) ), NULL );
  41                 return TRUE;
  42         }
  43         return FALSE;
  44 }
  45
  46 inline void widget_connect_escape_clear_focus_widget( GtkWidget* widget ){
  47         g_signal_connect( G_OBJECT( widget ), "key_press_event", G_CALLBACK( escape_clear_focus_widget ), 0 );
  48 }
  49
  50
  51 class NonModalEntry
  52 {
  53 bool m_editing;
  54 Callback m_apply;
  55 Callback m_cancel;
  56
  57 static gboolean focus_in( GtkEntry* entry, GdkEventFocus *event, NonModalEntry* self ){
  58         self->m_editing = false;
  59         return FALSE;
  60 }
  61
  62 static gboolean focus_out( GtkEntry* entry, GdkEventFocus *event, NonModalEntry* self ){
  63         if ( self->m_editing && GTK_WIDGET_VISIBLE( entry ) ) {
  64                 self->m_apply();
  65         }
  66         self->m_editing = false;
  67         return FALSE;
  68 }
  69
  70 static gboolean changed( GtkEntry* entry, NonModalEntry* self ){
  71         self->m_editing = true;
  72         return FALSE;
  73 }
  74
  75 static gboolean enter( GtkEntry* entry, GdkEventKey* event, NonModalEntry* self ){
  76         if ( event->keyval == GDK_Return ) {
  77                 self->m_apply();
  78                 self->m_editing = false;
  79                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( entry ) ) ), NULL );
  80                 return TRUE;
  81         }
  82         return FALSE;
  83 }
  84
  85 static gboolean escape( GtkEntry* entry, GdkEventKey* event, NonModalEntry* self ){
  86         if ( event->keyval == GDK_Escape ) {
  87                 self->m_cancel();
  88                 self->m_editing = false;
  89                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( entry ) ) ), NULL );
  90                 return TRUE;
  91         }
  92         return FALSE;
  93 }
  94
  95 public:
  96 NonModalEntry( const Callback& apply, const Callback& cancel ) : m_editing( false ), m_apply( apply ), m_cancel( cancel ){
  97 }
  98 void connect( GtkEntry* entry ){
  99         g_signal_connect( G_OBJECT( entry ), "focus_in_event", G_CALLBACK( focus_in ), this );
 100         g_signal_connect( G_OBJECT( entry ), "focus_out_event", G_CALLBACK( focus_out ), this );
 101         g_signal_connect( G_OBJECT( entry ), "key_press_event", G_CALLBACK( enter ), this );
 102         g_signal_connect( G_OBJECT( entry ), "key_press_event", G_CALLBACK( escape ), this );
 103         g_signal_connect( G_OBJECT( entry ), "changed", G_CALLBACK( changed ), this );
 104 }
 105 };
 106
 107
 108 class NonModalSpinner
 109 {
 110 Callback m_apply;
 111 Callback m_cancel;
 112
 113 static gboolean changed( GtkSpinButton* spin, NonModalSpinner* self ){
 114         self->m_apply();
 115         return FALSE;
 116 }
 117
 118 static gboolean enter( GtkSpinButton* spin, GdkEventKey* event, NonModalSpinner* self ){
 119         if ( event->keyval == GDK_Return ) {
 120                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( spin ) ) ), NULL );
 121                 return TRUE;
 122         }
 123         return FALSE;
 124 }
 125
 126 static gboolean escape( GtkSpinButton* spin, GdkEventKey* event, NonModalSpinner* self ){
 127         if ( event->keyval == GDK_Escape ) {
 128                 self->m_cancel();
 129                 gtk_window_set_focus( GTK_WINDOW( gtk_widget_get_toplevel( GTK_WIDGET( spin ) ) ), NULL );
 130                 return TRUE;
 131         }
 132         return FALSE;
 133 }
 134
 135 public:
 136 NonModalSpinner( const Callback& apply, const Callback& cancel ) : m_apply( apply ), m_cancel( cancel ){
 137 }
 138 void connect( GtkSpinButton* spin ){
 139         guint handler = g_signal_connect( G_OBJECT( gtk_spin_button_get_adjustment( spin ) ), "value_changed", G_CALLBACK( changed ), this );
 140         g_object_set_data( G_OBJECT( spin ), "handler", gint_to_pointer( handler ) );
 141         g_signal_connect( G_OBJECT( spin ), "key_press_event", G_CALLBACK( enter ), this );
 142         g_signal_connect( G_OBJECT( spin ), "key_press_event", G_CALLBACK( escape ), this );
 143 }
 144 };
 145
 146
 147 class NonModalRadio
 148 {
 149 Callback m_changed;
 150
 151 public:
 152 NonModalRadio( const Callback& changed ) : m_changed( changed ){
 153 }
 154 void connect( GtkRadioButton* radio ){
 155         GSList* group = gtk_radio_button_group( radio );
 156         for (; group != 0; group = g_slist_next( group ) )
 157         {
 158                 toggle_button_connect_callback( GTK_TOGGLE_BUTTON( group->data ), m_changed );
 159         }
 160 }
 161 };
 162
 163
 164 #endif