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_needParent = TRUE;
  66
  67     m_blockEvent = FALSE;
  68
  69     if (!PreCreation( parent, pos, size ) ||
  70         !CreateBase( parent, id, pos, size, style, validator, name ))
  71     {
  72         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  73         return FALSE;
  74     }
  75
  76     GSList* radioButtonGroup = NULL;
  77     if (!HasFlag(wxRB_GROUP))
  78     {
  79         // search backward for last group start
  80         wxRadioButton *chief = (wxRadioButton*) NULL;
  81         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  82         while (node)
  83         {
  84             wxWindow *child = node->GetData();
  85             if (child->IsRadioButton())
  86             {
  87                 chief = (wxRadioButton*) child;
  88                 if (child->HasFlag(wxRB_GROUP))
  89                     break;
  90             }
  91             node = node->GetPrevious();
  92         }
  93         if (chief)
  94         {
  95             // we are part of the group started by chief
  96             radioButtonGroup = gtk_radio_button_get_group( GTK_RADIO_BUTTON(chief->m_widget) );
  97         }
  98     }
  99
 100     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
 101
 102     SetLabel(label);
 103
 104     g_signal_connect (m_widget, "clicked",
 105                       G_CALLBACK (gtk_radiobutton_clicked_callback), this);
 106
 107     m_parent->DoAddChild( this );
 108
 109     PostCreation(size);
 110
 111     return TRUE;
 112 }
 113
 114 void wxRadioButton::SetLabel( const wxString& label )
 115 {
 116     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 117
 118     GTKSetLabelForLabel(GTK_LABEL(GTK_BIN(m_widget)->child), label);
 119 }
 120
 121 void wxRadioButton::SetValue( bool val )
 122 {
 123     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 124
 125     if (val == GetValue())
 126         return;
 127
 128     m_blockEvent = TRUE;
 129
 130     if (val)
 131     {
 132         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 133     }
 134     else
 135     {
 136         // should give an assert
 137         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 138         //      as FALSE.  Failing silently is probably TRTTD here.
 139     }
 140
 141     m_blockEvent = FALSE;
 142 }
 143
 144 bool wxRadioButton::GetValue() const
 145 {
 146     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 147
 148     return GTK_TOGGLE_BUTTON(m_widget)->active;
 149 }
 150
 151 bool wxRadioButton::Enable( bool enable )
 152 {
 153     if ( !wxControl::Enable( enable ) )
 154         return FALSE;
 155
 156     gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
 157
 158     return TRUE;
 159 }
 160
 161 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 162 {
 163     gtk_widget_modify_style(m_widget, style);
 164     gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
 165 }
 166
 167 GdkWindow *
 168 wxRadioButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 169 {
 170     return GTK_BUTTON(m_widget)->event_window;
 171 }
 172
 173 wxSize wxRadioButton::DoGetBestSize() const
 174 {
 175     return wxControl::DoGetBestSize();
 176 }
 177
 178 // static
 179 wxVisualAttributes
 180 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 181 {
 182     wxVisualAttributes attr;
 183     // NB: we need toplevel window so that GTK+ can find the right style
 184     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 185     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 186     gtk_container_add(GTK_CONTAINER(wnd), widget);
 187     attr = GetDefaultAttributesFromGTKWidget(widget);
 188     gtk_widget_destroy(wnd);
 189     return attr;
 190 }
 191
 192
 193 #endif