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
  11 #ifdef __GNUG__
  12 #pragma implementation "radiobut.h"
  13 #endif
  14
  15 #include "wx/radiobut.h"
  16
  17 #if wxUSE_RADIOBOX
  18
  19 #include "gdk/gdk.h"
  20 #include "gtk/gtk.h"
  21
  22 //-----------------------------------------------------------------------------
  23 // idle system
  24 //-----------------------------------------------------------------------------
  25
  26 extern void wxapp_install_idle_handler();
  27 extern bool g_isIdle;
  28
  29 //-----------------------------------------------------------------------------
  30 // data
  31 //-----------------------------------------------------------------------------
  32
  33 extern bool g_blockEventsOnDrag;
  34
  35 //-----------------------------------------------------------------------------
  36 // "clicked"
  37 //-----------------------------------------------------------------------------
  38
  39 static
  40 void gtk_radiobutton_clicked_callback( GtkWidget *WXUNUSED(widget), wxRadioButton *rb )
  41 {
  42     if (g_isIdle) wxapp_install_idle_handler();
  43
  44     if (!rb->m_hasVMT) return;
  45
  46     if (g_blockEventsOnDrag) return;
  47
  48     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  49     event.SetInt( rb->GetValue() );
  50     event.SetEventObject( rb );
  51     rb->GetEventHandler()->ProcessEvent( event );
  52 }
  53
  54 //-----------------------------------------------------------------------------
  55 // wxRadioButton
  56 //-----------------------------------------------------------------------------
  57
  58 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  59
  60 bool wxRadioButton::Create( wxWindow *parent, wxWindowID id, const wxString& label,
  61   const wxPoint& pos,  const wxSize& size, long style,
  62   const wxValidator& validator, const wxString& name )
  63 {
  64     m_acceptsFocus = TRUE;
  65     m_needParent = TRUE;
  66
  67     wxSize newSize = size;
  68
  69     PreCreation( parent, id, pos, newSize, style, name );
  70
  71     m_isRadioButton = TRUE;
  72
  73 #if wxUSE_VALIDATORS
  74     SetValidator( validator );
  75 #endif
  76
  77
  78     if (HasFlag(wxRB_GROUP))
  79     {
  80         /* start a new group */
  81         m_radioButtonGroup = (GSList*) NULL;
  82     }
  83     else
  84     {
  85         /* search backward for last group start */
  86         wxRadioButton *chief = (wxRadioButton*) NULL;
  87         wxWindowList::Node *node = parent->GetChildren().GetLast();
  88         while (node)
  89         {
  90             wxWindow *child = node->GetData();
  91             if (child->m_isRadioButton)
  92             {
  93                  chief = (wxRadioButton*) child;
  94                  if (child->HasFlag(wxRB_GROUP)) break;
  95             }
  96             node = node->GetPrevious();
  97         }
  98         if (chief)
  99         {
 100             /* we are part of the group started by chief */
 101             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 102         }
 103         else
 104         {
 105             /* start a new group */
 106             m_radioButtonGroup = (GSList*) NULL;
 107         }
 108     }
 109
 110     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, label.mbc_str() );
 111
 112     SetLabel(label);
 113
 114     if (newSize.x == -1) newSize.x = 22+gdk_string_measure( m_widget->style->font, label.mbc_str() );
 115     if (newSize.y == -1) newSize.y = 26;
 116     SetSize( newSize.x, newSize.y );
 117
 118     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 119       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 120
 121     m_parent->DoAddChild( this );
 122
 123     PostCreation();
 124
 125     SetBackgroundColour( parent->GetBackgroundColour() );
 126     SetForegroundColour( parent->GetForegroundColour() );
 127     SetFont( parent->GetFont() );
 128
 129     Show( TRUE );
 130
 131     return TRUE;
 132 }
 133
 134 void wxRadioButton::SetLabel( const wxString& label )
 135 {
 136     wxCHECK_RET( m_widget != NULL, _T("invalid radiobutton") );
 137
 138     wxControl::SetLabel( label );
 139     GtkButton *bin = GTK_BUTTON( m_widget );
 140     GtkLabel *g_label = GTK_LABEL( bin->child );
 141     gtk_label_set( g_label, GetLabel().mbc_str() );
 142 }
 143
 144 void wxRadioButton::SetValue( bool val )
 145 {
 146     wxCHECK_RET( m_widget != NULL, _T("invalid radiobutton") );
 147
 148     if (val == GetValue())
 149         return;
 150
 151     gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
 152       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 153
 154     if (val)
 155     {
 156         gtk_toggle_button_set_state( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 157     }
 158     else
 159     {
 160         // should give an assert
 161     }
 162
 163     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 164       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 165 }
 166
 167 bool wxRadioButton::GetValue() const
 168 {
 169     wxCHECK_MSG( m_widget != NULL, FALSE, _T("invalid radiobutton") );
 170
 171     return GTK_TOGGLE_BUTTON(m_widget)->active;
 172 }
 173
 174 bool wxRadioButton::Enable( bool enable )
 175 {
 176     if ( !wxControl::Enable( enable ) )
 177         return FALSE;
 178
 179     gtk_widget_set_sensitive( GTK_BUTTON(m_widget)->child, enable );
 180
 181     return TRUE;
 182 }
 183
 184 void wxRadioButton::ApplyWidgetStyle()
 185 {
 186     SetWidgetStyle();
 187     gtk_widget_set_style( m_widget, m_widgetStyle );
 188     gtk_widget_set_style( GTK_BUTTON(m_widget)->child, m_widgetStyle );
 189 }
 190
 191 #endif