src/gtk1/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/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/gtk1/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->HandleWindowEvent( event );
  56 }
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 // wxRadioButton
  61 //-----------------------------------------------------------------------------
  62
  63 bool wxRadioButton::Create( wxWindow *parent,
  64                             wxWindowID id,
  65                             const wxString& label,
  66                             const wxPoint& pos,
  67                             const wxSize& size,
  68                             long style,
  69                             const wxValidator& validator,
  70                             const wxString& name )
  71 {
  72     m_acceptsFocus = TRUE;
  73     m_needParent = 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     GSList* radioButtonGroup = NULL;
  85     if (!HasFlag(wxRB_GROUP))
  86     {
  87         // search backward for last group start
  88         wxRadioButton *chief = NULL;
  89         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  90         while (node)
  91         {
  92             wxWindow *child = node->GetData();
  93             if (child->IsRadioButton())
  94             {
  95                 chief = (wxRadioButton*) child;
  96                 if (child->HasFlag(wxRB_GROUP))
  97                     break;
  98             }
  99             node = node->GetPrevious();
 100         }
 101         if (chief)
 102         {
 103             // we are part of the group started by chief
 104             radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 105         }
 106     }
 107
 108     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
 109
 110     SetLabel(label);
 111
 112     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 113       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 114
 115     m_parent->DoAddChild( this );
 116
 117     PostCreation(size);
 118
 119     return TRUE;
 120 }
 121
 122 void wxRadioButton::SetLabel( const wxString& label )
 123 {
 124     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 125
 126     GTKSetLabelForLabel(GTK_LABEL(BUTTON_CHILD(m_widget)), label);
 127 }
 128
 129 void wxRadioButton::SetValue( bool val )
 130 {
 131     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 132
 133     if (val == GetValue())
 134         return;
 135
 136     m_blockEvent = TRUE;
 137
 138     if (val)
 139     {
 140         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 141     }
 142     else
 143     {
 144         // should give an assert
 145         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 146         //      as FALSE.  Failing silently is probably TRTTD here.
 147     }
 148
 149     m_blockEvent = FALSE;
 150 }
 151
 152 bool wxRadioButton::GetValue() const
 153 {
 154     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 155
 156     return GTK_TOGGLE_BUTTON(m_widget)->active;
 157 }
 158
 159 bool wxRadioButton::Enable( bool enable )
 160 {
 161     if ( !wxControl::Enable( enable ) )
 162         return FALSE;
 163
 164     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 165
 166     return TRUE;
 167 }
 168
 169 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 170 {
 171     gtk_widget_modify_style(m_widget, style);
 172     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 173 }
 174
 175 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 176 {
 177     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 178 }
 179
 180 void wxRadioButton::OnInternalIdle()
 181 {
 182     wxCursor cursor = m_cursor;
 183     if (g_globalCursor.IsOk()) cursor = g_globalCursor;
 184
 185     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 186     if ( win && cursor.IsOk())
 187     {
 188         /* I now set the cursor the anew in every OnInternalIdle call
 189        as setting the cursor in a parent window also effects the
 190        windows above so that checking for the current cursor is
 191        not possible. */
 192
 193        gdk_window_set_cursor( win, cursor.GetCursor() );
 194     }
 195
 196     if (g_delayedFocus == this)
 197     {
 198         if (GTK_WIDGET_REALIZED(m_widget))
 199         {
 200             gtk_widget_grab_focus( m_widget );
 201             g_delayedFocus = NULL;
 202         }
 203     }
 204
 205     if (wxUpdateUIEvent::CanUpdate(this))
 206         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 207 }
 208
 209 wxSize wxRadioButton::DoGetBestSize() const
 210 {
 211     return wxControl::DoGetBestSize();
 212 }
 213
 214 // static
 215 wxVisualAttributes
 216 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 217 {
 218     wxVisualAttributes attr;
 219     // NB: we need toplevel window so that GTK+ can find the right style
 220     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 221     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 222     gtk_container_add(GTK_CONTAINER(wnd), widget);
 223     attr = GetDefaultAttributesFromGTKWidget(widget);
 224     gtk_widget_destroy(wnd);
 225     return attr;
 226 }
 227
 228
 229 #endif