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_RADIOBTN
  14
  15 #include "wx/radiobut.h"
  16
  17 #include "wx/gtk/private.h"
  18
  19 //-----------------------------------------------------------------------------
  20 // data
  21 //-----------------------------------------------------------------------------
  22
  23 extern bool           g_blockEventsOnDrag;
  24
  25 //-----------------------------------------------------------------------------
  26 // "clicked"
  27 //-----------------------------------------------------------------------------
  28
  29 extern "C" {
  30 static
  31 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  32 {
  33     if (!rb->m_hasVMT) return;
  34
  35     if (g_blockEventsOnDrag) return;
  36
  37     if (!button->active) return;
  38
  39     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  40     event.SetInt( rb->GetValue() );
  41     event.SetEventObject( rb );
  42     rb->HandleWindowEvent( event );
  43 }
  44 }
  45
  46 //-----------------------------------------------------------------------------
  47 // wxRadioButton
  48 //-----------------------------------------------------------------------------
  49
  50 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  51
  52 bool wxRadioButton::Create( wxWindow *parent,
  53                             wxWindowID id,
  54                             const wxString& label,
  55                             const wxPoint& pos,
  56                             const wxSize& size,
  57                             long style,
  58                             const wxValidator& validator,
  59                             const wxString& name )
  60 {
  61     if (!PreCreation( parent, pos, size ) ||
  62         !CreateBase( parent, id, pos, size, style, validator, name ))
  63     {
  64         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  65         return false;
  66     }
  67
  68     GSList* radioButtonGroup = NULL;
  69     if (!HasFlag(wxRB_GROUP) && !HasFlag(wxRB_SINGLE))
  70     {
  71         // search backward for last group start
  72         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  73         for (; node; node = node->GetPrevious())
  74         {
  75             wxWindow *child = node->GetData();
  76             if (child->HasFlag(wxRB_GROUP) && wxIsKindOf(child, wxRadioButton))
  77             {
  78                 radioButtonGroup = gtk_radio_button_get_group(
  79                     GTK_RADIO_BUTTON(child->m_widget));
  80                 break;
  81             }
  82         }
  83     }
  84
  85     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
  86     g_object_ref(m_widget);
  87
  88     SetLabel(label);
  89
  90     g_signal_connect_after (m_widget, "clicked",
  91                             G_CALLBACK (gtk_radiobutton_clicked_callback), this);
  92
  93     m_parent->DoAddChild( this );
  94
  95     PostCreation(size);
  96
  97     return true;
  98 }
  99
 100 void wxRadioButton::SetLabel( const wxString& label )
 101 {
 102     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 103
 104     GTKSetLabelForLabel(GTK_LABEL(GTK_BIN(m_widget)->child), label);
 105 }
 106
 107 void wxRadioButton::SetValue( bool val )
 108 {
 109     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 110
 111     if (val == GetValue())
 112         return;
 113
 114     g_signal_handlers_block_by_func(
 115         m_widget, (void*)gtk_radiobutton_clicked_callback, this);
 116
 117     if (val)
 118     {
 119         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 120     }
 121     else
 122     {
 123         // should give an assert
 124         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 125         //      as FALSE.  Failing silently is probably TRTTD here.
 126         // RR - MSW actually unchecks the radio button so do this here, too
 127         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), FALSE );
 128     }
 129
 130     g_signal_handlers_unblock_by_func(
 131         m_widget, (void*)gtk_radiobutton_clicked_callback, this);
 132 }
 133
 134 bool wxRadioButton::GetValue() const
 135 {
 136     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobutton") );
 137
 138     return GTK_TOGGLE_BUTTON(m_widget)->active;
 139 }
 140
 141 bool wxRadioButton::Enable( bool enable )
 142 {
 143     if (!base_type::Enable(enable))
 144         return false;
 145
 146     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 147
 148     if (enable)
 149         GTKFixSensitivity();
 150
 151     return true;
 152 }
 153
 154 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 155 {
 156     gtk_widget_modify_style(m_widget, style);
 157     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 158 }
 159
 160 GdkWindow *
 161 wxRadioButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 162 {
 163     return GTK_BUTTON(m_widget)->event_window;
 164 }
 165
 166 // static
 167 wxVisualAttributes
 168 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 169 {
 170     wxVisualAttributes attr;
 171     // NB: we need toplevel window so that GTK+ can find the right style
 172     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 173     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 174     gtk_container_add(GTK_CONTAINER(wnd), widget);
 175     attr = GetDefaultAttributesFromGTKWidget(widget);
 176     gtk_widget_destroy(wnd);
 177     return attr;
 178 }
 179
 180
 181 #endif