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_blockEvent = false;
  64
  65     if (!PreCreation( parent, pos, size ) ||
  66         !CreateBase( parent, id, pos, size, style, validator, name ))
  67     {
  68         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  69         return false;
  70     }
  71
  72     GSList* radioButtonGroup = NULL;
  73     if (!HasFlag(wxRB_GROUP))
  74     {
  75         // search backward for last group start
  76         wxRadioButton *chief = (wxRadioButton*) NULL;
  77         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  78         while (node)
  79         {
  80             wxWindow *child = node->GetData();
  81             if (child->IsRadioButton())
  82             {
  83                 chief = (wxRadioButton*) child;
  84                 if (child->HasFlag(wxRB_GROUP))
  85                     break;
  86             }
  87             node = node->GetPrevious();
  88         }
  89         if (chief)
  90         {
  91             // we are part of the group started by chief
  92             radioButtonGroup = gtk_radio_button_get_group( GTK_RADIO_BUTTON(chief->m_widget) );
  93         }
  94     }
  95
  96     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
  97
  98     SetLabel(label);
  99
 100     g_signal_connect (m_widget, "clicked",
 101                       G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 102
 103     m_parent->DoAddChild( this );
 104
 105     PostCreation(size);
 106
 107     return TRUE;
 108 }
 109
 110 void wxRadioButton::SetLabel( const wxString& label )
 111 {
 112     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 113
 114     GTKSetLabelForLabel(GTK_LABEL(GTK_BIN(m_widget)->child), label);
 115 }
 116
 117 void wxRadioButton::SetValue( bool val )
 118 {
 119     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 120
 121     if (val == GetValue())
 122         return;
 123
 124     m_blockEvent = TRUE;
 125
 126     if (val)
 127     {
 128         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 129     }
 130     else
 131     {
 132         // should give an assert
 133         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 134         //      as FALSE.  Failing silently is probably TRTTD here.
 135     }
 136
 137     m_blockEvent = FALSE;
 138 }
 139
 140 bool wxRadioButton::GetValue() const
 141 {
 142     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 143
 144     return GTK_TOGGLE_BUTTON(m_widget)->active;
 145 }
 146
 147 bool wxRadioButton::Enable( bool enable )
 148 {
 149     if ( !wxControl::Enable( enable ) )
 150         return FALSE;
 151
 152     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 153
 154     return TRUE;
 155 }
 156
 157 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 158 {
 159     gtk_widget_modify_style(m_widget, style);
 160     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 161 }
 162
 163 GdkWindow *
 164 wxRadioButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 165 {
 166     return GTK_BUTTON(m_widget)->event_window;
 167 }
 168
 169 wxSize wxRadioButton::DoGetBestSize() const
 170 {
 171     return wxControl::DoGetBestSize();
 172 }
 173
 174 // static
 175 wxVisualAttributes
 176 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 177 {
 178     wxVisualAttributes attr;
 179     // NB: we need toplevel window so that GTK+ can find the right style
 180     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 181     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 182     gtk_container_add(GTK_CONTAINER(wnd), widget);
 183     attr = GetDefaultAttributesFromGTKWidget(widget);
 184     gtk_widget_destroy(wnd);
 185     return attr;
 186 }
 187
 188
 189 #endif