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 // 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     if (rb->m_blockEvent) return;
  40
  41     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  42     event.SetInt( rb->GetValue() );
  43     event.SetEventObject( rb );
  44     rb->GetEventHandler()->ProcessEvent( event );
  45 }
  46 }
  47
  48 //-----------------------------------------------------------------------------
  49 // wxRadioButton
  50 //-----------------------------------------------------------------------------
  51
  52 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  53
  54 bool wxRadioButton::Create( wxWindow *parent,
  55                             wxWindowID id,
  56                             const wxString& label,
  57                             const wxPoint& pos,
  58                             const wxSize& size,
  59                             long style,
  60                             const wxValidator& validator,
  61                             const wxString& name )
  62 {
  63     m_needParent = TRUE;
  64
  65     m_blockEvent = FALSE;
  66
  67     if (!PreCreation( parent, pos, size ) ||
  68         !CreateBase( parent, id, pos, size, style, validator, name ))
  69     {
  70         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  71         return FALSE;
  72     }
  73
  74     GSList* radioButtonGroup = NULL;
  75     if (!HasFlag(wxRB_GROUP))
  76     {
  77         // search backward for last group start
  78         wxRadioButton *chief = (wxRadioButton*) NULL;
  79         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  80         while (node)
  81         {
  82             wxWindow *child = node->GetData();
  83             if (child->IsRadioButton())
  84             {
  85                 chief = (wxRadioButton*) child;
  86                 if (child->HasFlag(wxRB_GROUP))
  87                     break;
  88             }
  89             node = node->GetPrevious();
  90         }
  91         if (chief)
  92         {
  93             // we are part of the group started by chief
  94             radioButtonGroup = gtk_radio_button_get_group( GTK_RADIO_BUTTON(chief->m_widget) );
  95         }
  96     }
  97
  98     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
  99
 100     SetLabel(label);
 101
 102     g_signal_connect (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     GTKSetLabelForLabel(GTK_LABEL(GTK_BIN(m_widget)->child), label);
 117 }
 118
 119 void wxRadioButton::SetValue( bool val )
 120 {
 121     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 122
 123     if (val == GetValue())
 124         return;
 125
 126     m_blockEvent = TRUE;
 127
 128     if (val)
 129     {
 130         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 131     }
 132     else
 133     {
 134         // should give an assert
 135         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 136         //      as FALSE.  Failing silently is probably TRTTD here.
 137     }
 138
 139     m_blockEvent = FALSE;
 140 }
 141
 142 bool wxRadioButton::GetValue() const
 143 {
 144     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 145
 146     return GTK_TOGGLE_BUTTON(m_widget)->active;
 147 }
 148
 149 bool wxRadioButton::Enable( bool enable )
 150 {
 151     if ( !wxControl::Enable( enable ) )
 152         return FALSE;
 153
 154     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 155
 156     return TRUE;
 157 }
 158
 159 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 160 {
 161     gtk_widget_modify_style(m_widget, style);
 162     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 163 }
 164
 165 GdkWindow *
 166 wxRadioButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 167 {
 168     return GTK_BUTTON(m_widget)->event_window;
 169 }
 170
 171 wxSize wxRadioButton::DoGetBestSize() const
 172 {
 173     return wxControl::DoGetBestSize();
 174 }
 175
 176 // static
 177 wxVisualAttributes
 178 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 179 {
 180     wxVisualAttributes attr;
 181     // NB: we need toplevel window so that GTK+ can find the right style
 182     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 183     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 184     gtk_container_add(GTK_CONTAINER(wnd), widget);
 185     attr = GetDefaultAttributesFromGTKWidget(widget);
 186     gtk_widget_destroy(wnd);
 187     return attr;
 188 }
 189
 190
 191 #endif