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 (g_isIdle) wxapp_install_idle_handler();
  34
  35     if (!rb->m_hasVMT) return;
  36
  37     if (g_blockEventsOnDrag) return;
  38
  39     if (!button->active) return;
  40
  41     if (rb->m_blockEvent) return;
  42
  43     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  44     event.SetInt( rb->GetValue() );
  45     event.SetEventObject( rb );
  46     rb->GetEventHandler()->ProcessEvent( event );
  47 }
  48 }
  49
  50 //-----------------------------------------------------------------------------
  51 // wxRadioButton
  52 //-----------------------------------------------------------------------------
  53
  54 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  55
  56 bool wxRadioButton::Create( wxWindow *parent,
  57                             wxWindowID id,
  58                             const wxString& label,
  59                             const wxPoint& pos,
  60                             const wxSize& size,
  61                             long style,
  62                             const wxValidator& validator,
  63                             const wxString& name )
  64 {
  65     m_acceptsFocus = TRUE;
  66     m_needParent = TRUE;
  67
  68     m_blockEvent = FALSE;
  69
  70     if (!PreCreation( parent, pos, size ) ||
  71         !CreateBase( parent, id, pos, size, style, validator, name ))
  72     {
  73         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  74         return FALSE;
  75     }
  76
  77     GSList* radioButtonGroup = NULL;
  78     if (!HasFlag(wxRB_GROUP))
  79     {
  80         // search backward for last group start
  81         wxRadioButton *chief = (wxRadioButton*) NULL;
  82         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  83         while (node)
  84         {
  85             wxWindow *child = node->GetData();
  86             if (child->IsRadioButton())
  87             {
  88                 chief = (wxRadioButton*) child;
  89                 if (child->HasFlag(wxRB_GROUP))
  90                     break;
  91             }
  92             node = node->GetPrevious();
  93         }
  94         if (chief)
  95         {
  96             // we are part of the group started by chief
  97             radioButtonGroup = gtk_radio_button_get_group( GTK_RADIO_BUTTON(chief->m_widget) );
  98         }
  99     }
 100
 101     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
 102
 103     SetLabel(label);
 104
 105     g_signal_connect (m_widget, "clicked",
 106                       G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 107
 108     m_parent->DoAddChild( this );
 109
 110     PostCreation(size);
 111
 112     return TRUE;
 113 }
 114
 115 void wxRadioButton::SetLabel( const wxString& label )
 116 {
 117     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 118
 119     GTKSetLabelForLabel(GTK_LABEL(GTK_BIN(m_widget)->child), 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     m_blockEvent = TRUE;
 130
 131     if (val)
 132     {
 133         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 134     }
 135     else
 136     {
 137         // should give an assert
 138         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 139         //      as FALSE.  Failing silently is probably TRTTD here.
 140     }
 141
 142     m_blockEvent = FALSE;
 143 }
 144
 145 bool wxRadioButton::GetValue() const
 146 {
 147     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 148
 149     return GTK_TOGGLE_BUTTON(m_widget)->active;
 150 }
 151
 152 bool wxRadioButton::Enable( bool enable )
 153 {
 154     if ( !wxControl::Enable( enable ) )
 155         return FALSE;
 156
 157     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 158
 159     return TRUE;
 160 }
 161
 162 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 163 {
 164     gtk_widget_modify_style(m_widget, style);
 165     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 166 }
 167
 168 GdkWindow *
 169 wxRadioButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 170 {
 171     return GTK_BUTTON(m_widget)->event_window;
 172 }
 173
 174 wxSize wxRadioButton::DoGetBestSize() const
 175 {
 176     return wxControl::DoGetBestSize();
 177 }
 178
 179 // static
 180 wxVisualAttributes
 181 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 182 {
 183     wxVisualAttributes attr;
 184     // NB: we need toplevel window so that GTK+ can find the right style
 185     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 186     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 187     gtk_container_add(GTK_CONTAINER(wnd), widget);
 188     attr = GetDefaultAttributesFromGTKWidget(widget);
 189     gtk_widget_destroy(wnd);
 190     return attr;
 191 }
 192
 193
 194 #endif