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     g_signal_connect (m_widget, "clicked",
 115                       G_CALLBACK (gtk_radiobutton_clicked_callback), 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     GTKSetLabelForLabel(GTK_LABEL(BUTTON_CHILD(m_widget)), label);
 129 }
 130
 131 void wxRadioButton::SetValue( bool val )
 132 {
 133     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 134
 135     if (val == GetValue())
 136         return;
 137
 138     m_blockEvent = TRUE;
 139
 140     if (val)
 141     {
 142         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 143     }
 144     else
 145     {
 146         // should give an assert
 147         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 148         //      as FALSE.  Failing silently is probably TRTTD here.
 149     }
 150
 151     m_blockEvent = FALSE;
 152 }
 153
 154 bool wxRadioButton::GetValue() const
 155 {
 156     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 157
 158     return GTK_TOGGLE_BUTTON(m_widget)->active;
 159 }
 160
 161 bool wxRadioButton::Enable( bool enable )
 162 {
 163     if ( !wxControl::Enable( enable ) )
 164         return FALSE;
 165
 166     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 167
 168     return TRUE;
 169 }
 170
 171 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 172 {
 173     gtk_widget_modify_style(m_widget, style);
 174     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 175 }
 176
 177 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 178 {
 179     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 180 }
 181
 182 void wxRadioButton::OnInternalIdle()
 183 {
 184     wxCursor cursor = m_cursor;
 185     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 186
 187     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 188     if ( win && cursor.Ok())
 189     {
 190         /* I now set the cursor the anew in every OnInternalIdle call
 191        as setting the cursor in a parent window also effects the
 192        windows above so that checking for the current cursor is
 193        not possible. */
 194
 195        gdk_window_set_cursor( win, cursor.GetCursor() );
 196     }
 197
 198     if (g_delayedFocus == this)
 199     {
 200         if (GTK_WIDGET_REALIZED(m_widget))
 201         {
 202             gtk_widget_grab_focus( m_widget );
 203             g_delayedFocus = NULL;
 204         }
 205     }
 206
 207     if (wxUpdateUIEvent::CanUpdate(this))
 208         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 209 }
 210
 211 wxSize wxRadioButton::DoGetBestSize() const
 212 {
 213     return wxControl::DoGetBestSize();
 214 }
 215
 216 // static
 217 wxVisualAttributes
 218 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 219 {
 220     wxVisualAttributes attr;
 221     // NB: we need toplevel window so that GTK+ can find the right style
 222     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 223     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 224     gtk_container_add(GTK_CONTAINER(wnd), widget);
 225     attr = GetDefaultAttributesFromGTKWidget(widget);
 226     gtk_widget_destroy(wnd);
 227     return attr;
 228 }
 229
 230
 231 #endif