src/gtk/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/radiobut.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Copyright:   (c) 1998 Robert Roebling
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #if wxUSE_RADIOBTN
  13
  14 #include "wx/radiobut.h"
  15
  16 #include <gtk/gtk.h>
  17 #include "wx/gtk/private.h"
  18 #include "wx/gtk/private/gtk2-compat.h"
  19
  20 //-----------------------------------------------------------------------------
  21 // data
  22 //-----------------------------------------------------------------------------
  23
  24 extern bool           g_blockEventsOnDrag;
  25
  26 //-----------------------------------------------------------------------------
  27 // "clicked"
  28 //-----------------------------------------------------------------------------
  29
  30 extern "C" {
  31 static
  32 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  33 {
  34     if (g_blockEventsOnDrag) return;
  35
  36     if (!gtk_toggle_button_get_active(button)) return;
  37
  38     wxCommandEvent event( wxEVT_RADIOBUTTON, rb->GetId());
  39     event.SetInt( rb->GetValue() );
  40     event.SetEventObject( rb );
  41     rb->HandleWindowEvent( event );
  42 }
  43 }
  44
  45 //-----------------------------------------------------------------------------
  46 // wxRadioButton
  47 //-----------------------------------------------------------------------------
  48
  49 bool wxRadioButton::Create( wxWindow *parent,
  50                             wxWindowID id,
  51                             const wxString& label,
  52                             const wxPoint& pos,
  53                             const wxSize& size,
  54                             long style,
  55                             const wxValidator& validator,
  56                             const wxString& name )
  57 {
  58     if (!PreCreation( parent, pos, size ) ||
  59         !CreateBase( parent, id, pos, size, style, validator, name ))
  60     {
  61         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  62         return false;
  63     }
  64
  65     // Check if this radio button should be put into an existing group. This
  66     // shouldn't be done if it's given a style to explicitly start a new group
  67     // or if it's not meant to be a part of a group at all.
  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
  77             // We stop at the first previous radio button in any case as it
  78             // wouldn't make sense to put this button in a group with another
  79             // one if there is a radio button that is not part of the same
  80             // group between them.
  81             if (wxIsKindOf(child, wxRadioButton))
  82             {
  83                 // Any preceding radio button can be used to get its group, not
  84                 // necessarily one with wxRB_GROUP style, but exclude
  85                 // wxRB_SINGLE ones as their group should never be shared.
  86                 if (!child->HasFlag(wxRB_SINGLE))
  87                 {
  88                     radioButtonGroup = gtk_radio_button_get_group(
  89                         GTK_RADIO_BUTTON(child->m_widget));
  90                 }
  91
  92                 break;
  93             }
  94         }
  95     }
  96
  97     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
  98     g_object_ref(m_widget);
  99
 100     SetLabel(label);
 101
 102     g_signal_connect_after (m_widget, "clicked",
 103                             G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 104
 105     m_parent->DoAddChild( this );
 106
 107     PostCreation(size);
 108
 109     return true;
 110 }
 111
 112 void wxRadioButton::SetLabel( const wxString& label )
 113 {
 114     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 115
 116     // save the original label
 117     wxControlBase::SetLabel(label);
 118
 119     GTKSetLabelForLabel(GTK_LABEL(gtk_bin_get_child(GTK_BIN(m_widget))), label);
 120 }
 121
 122 void wxRadioButton::SetValue( bool val )
 123 {
 124     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 125
 126     if (val == GetValue())
 127         return;
 128
 129     g_signal_handlers_block_by_func(
 130         m_widget, (void*)gtk_radiobutton_clicked_callback, this);
 131
 132     if (val)
 133     {
 134         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 135     }
 136     else
 137     {
 138         // should give an assert
 139         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 140         //      as FALSE.  Failing silently is probably TRTTD here.
 141     }
 142
 143     g_signal_handlers_unblock_by_func(
 144         m_widget, (void*)gtk_radiobutton_clicked_callback, this);
 145 }
 146
 147 bool wxRadioButton::GetValue() const
 148 {
 149     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid radiobutton") );
 150
 151     return gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(m_widget)) != 0;
 152 }
 153
 154 bool wxRadioButton::Enable( bool enable )
 155 {
 156     if (!base_type::Enable(enable))
 157         return false;
 158
 159     gtk_widget_set_sensitive(gtk_bin_get_child(GTK_BIN(m_widget)), enable);
 160
 161     if (enable)
 162         GTKFixSensitivity();
 163
 164     return true;
 165 }
 166
 167 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 168 {
 169     GTKApplyStyle(m_widget, style);
 170     GTKApplyStyle(gtk_bin_get_child(GTK_BIN(m_widget)), style);
 171 }
 172
 173 GdkWindow *
 174 wxRadioButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 175 {
 176     return gtk_button_get_event_window(GTK_BUTTON(m_widget));
 177 }
 178
 179 // static
 180 wxVisualAttributes
 181 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 182 {
 183     return GetDefaultAttributesFromGTKWidget(gtk_radio_button_new_with_label(NULL, ""));
 184 }
 185
 186
 187 #endif