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