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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  12 #pragma implementation "radiobut.h"
  13 #endif
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #if wxUSE_RADIOBOX
  19
  20 #include "wx/radiobut.h"
  21
  22 #include "wx/gtk/private.h"
  23
  24 //-----------------------------------------------------------------------------
  25 // idle system
  26 //-----------------------------------------------------------------------------
  27
  28 extern void wxapp_install_idle_handler();
  29 extern bool g_isIdle;
  30
  31 //-----------------------------------------------------------------------------
  32 // data
  33 //-----------------------------------------------------------------------------
  34
  35 extern bool           g_blockEventsOnDrag;
  36 extern wxCursor       g_globalCursor;
  37 extern wxWindowGTK   *g_delayedFocus;
  38
  39 //-----------------------------------------------------------------------------
  40 // "clicked"
  41 //-----------------------------------------------------------------------------
  42
  43 static
  44 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  45 {
  46     if (g_isIdle) wxapp_install_idle_handler();
  47
  48     if (!rb->m_hasVMT) return;
  49
  50     if (g_blockEventsOnDrag) return;
  51
  52     if (!button->active) return;
  53
  54     if (rb->m_blockEvent) return;
  55
  56     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  57     event.SetInt( rb->GetValue() );
  58     event.SetEventObject( rb );
  59     rb->GetEventHandler()->ProcessEvent( event );
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // wxRadioButton
  64 //-----------------------------------------------------------------------------
  65
  66 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  67
  68 bool wxRadioButton::Create( wxWindow *parent,
  69                             wxWindowID id,
  70                             const wxString& label,
  71                             const wxPoint& pos,
  72                             const wxSize& size,
  73                             long style,
  74                             const wxValidator& validator,
  75                             const wxString& name )
  76 {
  77     m_acceptsFocus = TRUE;
  78     m_needParent = TRUE;
  79
  80     m_blockEvent = FALSE;
  81
  82     if (!PreCreation( parent, pos, size ) ||
  83         !CreateBase( parent, id, pos, size, style, validator, name ))
  84     {
  85         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  86         return FALSE;
  87     }
  88
  89     if (HasFlag(wxRB_GROUP))
  90     {
  91         // start a new group
  92         m_radioButtonGroup = (GSList*) NULL;
  93     }
  94     else
  95     {
  96         // search backward for last group start
  97         wxRadioButton *chief = (wxRadioButton*) NULL;
  98         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  99         while (node)
 100         {
 101             wxWindow *child = node->GetData();
 102             if (child->IsRadioButton())
 103             {
 104                 chief = (wxRadioButton*) child;
 105                 if (child->HasFlag(wxRB_GROUP))
 106                     break;
 107             }
 108             node = node->GetPrevious();
 109         }
 110         if (chief)
 111         {
 112             // we are part of the group started by chief
 113             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 114         }
 115         else
 116         {
 117             // start a new group
 118             m_radioButtonGroup = (GSList*) NULL;
 119         }
 120     }
 121
 122     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, wxGTK_CONV( label ) );
 123
 124     SetLabel(label);
 125
 126     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 127       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 128
 129     m_parent->DoAddChild( this );
 130
 131     PostCreation();
 132     InheritAttributes();
 133
 134     wxSize size_best( DoGetBestSize() );
 135     wxSize new_size( size );
 136     if (new_size.x == -1)
 137         new_size.x = size_best.x;
 138     if (new_size.y == -1)
 139         new_size.y = size_best.y;
 140     if ((new_size.x != size.x) || (new_size.y != size.y))
 141         SetSize( new_size.x, new_size.y );
 142
 143     Show( TRUE );
 144
 145     return TRUE;
 146 }
 147
 148 void wxRadioButton::SetLabel( const wxString& label )
 149 {
 150     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 151
 152     wxControl::SetLabel( label );
 153     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 154 #ifdef __WXGTK20__
 155     wxString label2 = PrepareLabelMnemonics( label );
 156     gtk_label_set_text_with_mnemonic( g_label, wxGTK_CONV( label2 ) );
 157 #else
 158     gtk_label_set( g_label, wxGTK_CONV( GetLabel() ) );
 159 #endif
 160 }
 161
 162 void wxRadioButton::SetValue( bool val )
 163 {
 164     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 165
 166     if (val == GetValue())
 167         return;
 168
 169     m_blockEvent = TRUE;
 170
 171     if (val)
 172     {
 173         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 174     }
 175     else
 176     {
 177         // should give an assert
 178         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 179         //      as FALSE.  Failing silently is probably TRTTD here.
 180     }
 181
 182     m_blockEvent = FALSE;
 183 }
 184
 185 bool wxRadioButton::GetValue() const
 186 {
 187     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 188
 189     return GTK_TOGGLE_BUTTON(m_widget)->active;
 190 }
 191
 192 bool wxRadioButton::Enable( bool enable )
 193 {
 194     if ( !wxControl::Enable( enable ) )
 195         return FALSE;
 196
 197     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 198
 199     return TRUE;
 200 }
 201
 202 void wxRadioButton::ApplyWidgetStyle()
 203 {
 204     SetWidgetStyle();
 205     gtk_widget_set_style( m_widget, m_widgetStyle );
 206     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 207 }
 208
 209 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 210 {
 211     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 212 }
 213
 214 void wxRadioButton::OnInternalIdle()
 215 {
 216     wxCursor cursor = m_cursor;
 217     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 218
 219     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 220     if ( win && cursor.Ok())
 221     {
 222         /* I now set the cursor the anew in every OnInternalIdle call
 223        as setting the cursor in a parent window also effects the
 224        windows above so that checking for the current cursor is
 225        not possible. */
 226
 227        gdk_window_set_cursor( win, cursor.GetCursor() );
 228     }
 229
 230     if (g_delayedFocus == this)
 231     {
 232         if (GTK_WIDGET_REALIZED(m_widget))
 233         {
 234             gtk_widget_grab_focus( m_widget );
 235             g_delayedFocus = NULL;
 236         }
 237     }
 238
 239     if (wxUpdateUIEvent::CanUpdate(this))
 240         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 241 }
 242
 243 wxSize wxRadioButton::DoGetBestSize() const
 244 {
 245     return wxControl::DoGetBestSize();
 246 }
 247
 248 #endif