src/gtk/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        radiobut.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "radiobut.h"
  13 #endif
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_RADIOBOX
  18
  19 #include "wx/radiobut.h"
  20
  21 #include "wx/gtk/private.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // idle system
  25 //-----------------------------------------------------------------------------
  26
  27 extern void wxapp_install_idle_handler();
  28 extern bool g_isIdle;
  29
  30 //-----------------------------------------------------------------------------
  31 // data
  32 //-----------------------------------------------------------------------------
  33
  34 extern bool           g_blockEventsOnDrag;
  35 extern wxCursor       g_globalCursor;
  36 extern wxWindowGTK   *g_delayedFocus;
  37
  38 //-----------------------------------------------------------------------------
  39 // "clicked"
  40 //-----------------------------------------------------------------------------
  41
  42 static
  43 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  44 {
  45     if (g_isIdle) wxapp_install_idle_handler();
  46
  47     if (!rb->m_hasVMT) return;
  48
  49     if (g_blockEventsOnDrag) return;
  50
  51     if (!button->active) return;
  52
  53     if (rb->m_blockEvent) return;
  54
  55     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  56     event.SetInt( rb->GetValue() );
  57     event.SetEventObject( rb );
  58     rb->GetEventHandler()->ProcessEvent( event );
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // wxRadioButton
  63 //-----------------------------------------------------------------------------
  64
  65 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  66
  67 bool wxRadioButton::Create( wxWindow *parent, wxWindowID id, const wxString& label,
  68   const wxPoint& pos,  const wxSize& size, long style,
  69   const wxValidator& validator, const wxString& name )
  70 {
  71     m_acceptsFocus = TRUE;
  72     m_needParent = TRUE;
  73     m_isRadioButton = TRUE;
  74
  75     m_blockEvent = FALSE;
  76
  77     if (!PreCreation( parent, pos, size ) ||
  78         !CreateBase( parent, id, pos, size, style, validator, name ))
  79     {
  80         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  81         return FALSE;
  82     }
  83
  84     if (HasFlag(wxRB_GROUP))
  85     {
  86         // start a new group
  87         m_radioButtonGroup = (GSList*) NULL;
  88     }
  89     else
  90     {
  91         // search backward for last group start
  92         wxRadioButton *chief = (wxRadioButton*) NULL;
  93         wxWindowList::Node *node = parent->GetChildren().GetLast();
  94         while (node)
  95         {
  96             wxWindow *child = node->GetData();
  97             if (child->m_isRadioButton)
  98             {
  99                 chief = (wxRadioButton*) child;
 100                 if (child->HasFlag(wxRB_GROUP)) break;
 101             }
 102             node = node->GetPrevious();
 103         }
 104         if (chief)
 105         {
 106             // we are part of the group started by chief
 107             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 108         }
 109         else
 110         {
 111             // start a new group
 112             m_radioButtonGroup = (GSList*) NULL;
 113         }
 114     }
 115
 116     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, label.mbc_str() );
 117
 118     SetLabel(label);
 119
 120     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 121       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 122
 123     m_parent->DoAddChild( this );
 124
 125     PostCreation();
 126
 127     SetFont( parent->GetFont() );
 128
 129     wxSize size_best( DoGetBestSize() );
 130     wxSize new_size( size );
 131     if (new_size.x == -1)
 132         new_size.x = size_best.x;
 133     if (new_size.y == -1)
 134         new_size.y = size_best.y;
 135     if ((new_size.x != size.x) || (new_size.y != size.y))
 136         SetSize( new_size.x, new_size.y );
 137
 138     SetBackgroundColour( parent->GetBackgroundColour() );
 139     SetForegroundColour( parent->GetForegroundColour() );
 140
 141     Show( TRUE );
 142
 143     return TRUE;
 144 }
 145
 146 void wxRadioButton::SetLabel( const wxString& label )
 147 {
 148     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 149
 150     wxControl::SetLabel( label );
 151     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 152     gtk_label_set( g_label, GetLabel().mbc_str() );
 153 }
 154
 155 void wxRadioButton::SetValue( bool val )
 156 {
 157     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 158
 159     if (val == GetValue())
 160         return;
 161
 162     m_blockEvent = TRUE;
 163
 164     if (val)
 165     {
 166         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 167     }
 168     else
 169     {
 170         // should give an assert
 171         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 172         //      as FALSE.  Failing silently is probably TRTTD here.
 173     }
 174
 175     m_blockEvent = FALSE;
 176 }
 177
 178 bool wxRadioButton::GetValue() const
 179 {
 180     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 181
 182     return GTK_TOGGLE_BUTTON(m_widget)->active;
 183 }
 184
 185 bool wxRadioButton::Enable( bool enable )
 186 {
 187     if ( !wxControl::Enable( enable ) )
 188         return FALSE;
 189
 190     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 191
 192     return TRUE;
 193 }
 194
 195 void wxRadioButton::ApplyWidgetStyle()
 196 {
 197     SetWidgetStyle();
 198     gtk_widget_set_style( m_widget, m_widgetStyle );
 199     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 200 }
 201
 202 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 203 {
 204     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 205 }
 206
 207 void wxRadioButton::OnInternalIdle()
 208 {
 209     wxCursor cursor = m_cursor;
 210     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 211
 212     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 213     if ( win && cursor.Ok())
 214     {
 215         /* I now set the cursor the anew in every OnInternalIdle call
 216        as setting the cursor in a parent window also effects the
 217        windows above so that checking for the current cursor is
 218        not possible. */
 219
 220        gdk_window_set_cursor( win, cursor.GetCursor() );
 221     }
 222
 223     if (g_delayedFocus == this)
 224     {
 225         if (GTK_WIDGET_REALIZED(m_widget))
 226         {
 227             gtk_widget_grab_focus( m_widget );
 228             g_delayedFocus = NULL;
 229         }
 230     }
 231
 232     UpdateWindowUI();
 233 }
 234
 235 wxSize wxRadioButton::DoGetBestSize() const
 236 {
 237     return wxControl::DoGetBestSize();
 238 }
 239
 240 #endif