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 extern "C" {
  44 static
  45 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  46 {
  47     if (g_isIdle) wxapp_install_idle_handler();
  48
  49     if (!rb->m_hasVMT) return;
  50
  51     if (g_blockEventsOnDrag) return;
  52
  53     if (!button->active) return;
  54
  55     if (rb->m_blockEvent) return;
  56
  57     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  58     event.SetInt( rb->GetValue() );
  59     event.SetEventObject( rb );
  60     rb->GetEventHandler()->ProcessEvent( event );
  61 }
  62 }
  63
  64 //-----------------------------------------------------------------------------
  65 // wxRadioButton
  66 //-----------------------------------------------------------------------------
  67
  68 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  69
  70 bool wxRadioButton::Create( wxWindow *parent,
  71                             wxWindowID id,
  72                             const wxString& label,
  73                             const wxPoint& pos,
  74                             const wxSize& size,
  75                             long style,
  76                             const wxValidator& validator,
  77                             const wxString& name )
  78 {
  79     m_acceptsFocus = TRUE;
  80     m_needParent = TRUE;
  81
  82     m_blockEvent = FALSE;
  83
  84     if (!PreCreation( parent, pos, size ) ||
  85         !CreateBase( parent, id, pos, size, style, validator, name ))
  86     {
  87         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  88         return FALSE;
  89     }
  90
  91     if (HasFlag(wxRB_GROUP))
  92     {
  93         // start a new group
  94         m_radioButtonGroup = (GSList*) NULL;
  95     }
  96     else
  97     {
  98         // search backward for last group start
  99         wxRadioButton *chief = (wxRadioButton*) NULL;
 100         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
 101         while (node)
 102         {
 103             wxWindow *child = node->GetData();
 104             if (child->IsRadioButton())
 105             {
 106                 chief = (wxRadioButton*) child;
 107                 if (child->HasFlag(wxRB_GROUP))
 108                     break;
 109             }
 110             node = node->GetPrevious();
 111         }
 112         if (chief)
 113         {
 114             // we are part of the group started by chief
 115             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 116         }
 117         else
 118         {
 119             // start a new group
 120             m_radioButtonGroup = (GSList*) NULL;
 121         }
 122     }
 123
 124     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, wxGTK_CONV( label ) );
 125
 126     SetLabel(label);
 127
 128     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 129       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 130
 131     m_parent->DoAddChild( this );
 132
 133     PostCreation(size);
 134
 135     return TRUE;
 136 }
 137
 138 void wxRadioButton::SetLabel( const wxString& label )
 139 {
 140     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 141
 142     wxControl::SetLabel( label );
 143     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 144 #ifdef __WXGTK20__
 145     wxString label2 = PrepareLabelMnemonics( label );
 146     gtk_label_set_text_with_mnemonic( g_label, wxGTK_CONV( label2 ) );
 147 #else
 148     gtk_label_set( g_label, wxGTK_CONV( GetLabel() ) );
 149 #endif
 150 }
 151
 152 void wxRadioButton::SetValue( bool val )
 153 {
 154     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 155
 156     if (val == GetValue())
 157         return;
 158
 159     m_blockEvent = TRUE;
 160
 161     if (val)
 162     {
 163         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 164     }
 165     else
 166     {
 167         // should give an assert
 168         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 169         //      as FALSE.  Failing silently is probably TRTTD here.
 170     }
 171
 172     m_blockEvent = FALSE;
 173 }
 174
 175 bool wxRadioButton::GetValue() const
 176 {
 177     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 178
 179     return GTK_TOGGLE_BUTTON(m_widget)->active;
 180 }
 181
 182 bool wxRadioButton::Enable( bool enable )
 183 {
 184     if ( !wxControl::Enable( enable ) )
 185         return FALSE;
 186
 187     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 188
 189     return TRUE;
 190 }
 191
 192 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 193 {
 194     gtk_widget_modify_style(m_widget, style);
 195     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 196 }
 197
 198 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 199 {
 200     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 201 }
 202
 203 void wxRadioButton::OnInternalIdle()
 204 {
 205     wxCursor cursor = m_cursor;
 206     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 207
 208     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 209     if ( win && cursor.Ok())
 210     {
 211         /* I now set the cursor the anew in every OnInternalIdle call
 212        as setting the cursor in a parent window also effects the
 213        windows above so that checking for the current cursor is
 214        not possible. */
 215
 216        gdk_window_set_cursor( win, cursor.GetCursor() );
 217     }
 218
 219     if (g_delayedFocus == this)
 220     {
 221         if (GTK_WIDGET_REALIZED(m_widget))
 222         {
 223             gtk_widget_grab_focus( m_widget );
 224             g_delayedFocus = NULL;
 225         }
 226     }
 227
 228     if (wxUpdateUIEvent::CanUpdate(this))
 229         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 230 }
 231
 232 wxSize wxRadioButton::DoGetBestSize() const
 233 {
 234     return wxControl::DoGetBestSize();
 235 }
 236
 237 // static
 238 wxVisualAttributes
 239 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 240 {
 241     wxVisualAttributes attr;
 242     // NB: we need toplevel window so that GTK+ can find the right style
 243     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 244     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 245     gtk_container_add(GTK_CONTAINER(wnd), widget);
 246     attr = GetDefaultAttributesFromGTKWidget(widget);
 247     gtk_widget_destroy(wnd);
 248     return attr;
 249 }
 250
 251
 252 #endif