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