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