src/gtk1/radiobut.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk1/radiobut.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Copyright:   (c) 1998 Robert Roebling
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #if wxUSE_RADIOBOX
  13
  14 #include "wx/radiobut.h"
  15
  16 #include "wx/gtk1/private.h"
  17
  18 //-----------------------------------------------------------------------------
  19 // idle system
  20 //-----------------------------------------------------------------------------
  21
  22 extern void wxapp_install_idle_handler();
  23 extern bool g_isIdle;
  24
  25 //-----------------------------------------------------------------------------
  26 // data
  27 //-----------------------------------------------------------------------------
  28
  29 extern bool           g_blockEventsOnDrag;
  30 extern wxCursor       g_globalCursor;
  31 extern wxWindowGTK   *g_delayedFocus;
  32
  33 //-----------------------------------------------------------------------------
  34 // "clicked"
  35 //-----------------------------------------------------------------------------
  36
  37 extern "C" {
  38 static
  39 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  40 {
  41     if (g_isIdle) wxapp_install_idle_handler();
  42
  43     if (!rb->m_hasVMT) return;
  44
  45     if (g_blockEventsOnDrag) return;
  46
  47     if (!button->active) return;
  48
  49     if (rb->m_blockEvent) return;
  50
  51     wxCommandEvent event( wxEVT_RADIOBUTTON, rb->GetId());
  52     event.SetInt( rb->GetValue() );
  53     event.SetEventObject( rb );
  54     rb->HandleWindowEvent( event );
  55 }
  56 }
  57
  58 //-----------------------------------------------------------------------------
  59 // wxRadioButton
  60 //-----------------------------------------------------------------------------
  61
  62 bool wxRadioButton::Create( wxWindow *parent,
  63                             wxWindowID id,
  64                             const wxString& label,
  65                             const wxPoint& pos,
  66                             const wxSize& size,
  67                             long style,
  68                             const wxValidator& validator,
  69                             const wxString& name )
  70 {
  71     m_acceptsFocus = TRUE;
  72     m_needParent = TRUE;
  73
  74     m_blockEvent = FALSE;
  75
  76     if (!PreCreation( parent, pos, size ) ||
  77         !CreateBase( parent, id, pos, size, style, validator, name ))
  78     {
  79         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  80         return FALSE;
  81     }
  82
  83     GSList* radioButtonGroup = NULL;
  84     if (!HasFlag(wxRB_GROUP))
  85     {
  86         // search backward for last group start
  87         wxRadioButton *chief = NULL;
  88         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  89         while (node)
  90         {
  91             wxWindow *child = node->GetData();
  92             if (child->IsRadioButton())
  93             {
  94                 chief = (wxRadioButton*) child;
  95                 if (child->HasFlag(wxRB_GROUP))
  96                     break;
  97             }
  98             node = node->GetPrevious();
  99         }
 100         if (chief)
 101         {
 102             // we are part of the group started by chief
 103             radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 104         }
 105     }
 106
 107     m_widget = gtk_radio_button_new_with_label( radioButtonGroup, wxGTK_CONV( label ) );
 108
 109     SetLabel(label);
 110
 111     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 112       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 113
 114     m_parent->DoAddChild( this );
 115
 116     PostCreation(size);
 117
 118     return TRUE;
 119 }
 120
 121 void wxRadioButton::SetLabel( const wxString& label )
 122 {
 123     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 124
 125     GTKSetLabelForLabel(GTK_LABEL(BUTTON_CHILD(m_widget)), label);
 126 }
 127
 128 void wxRadioButton::SetValue( bool val )
 129 {
 130     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 131
 132     if (val == GetValue())
 133         return;
 134
 135     m_blockEvent = TRUE;
 136
 137     if (val)
 138     {
 139         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 140     }
 141     else
 142     {
 143         // should give an assert
 144         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 145         //      as FALSE.  Failing silently is probably TRTTD here.
 146     }
 147
 148     m_blockEvent = FALSE;
 149 }
 150
 151 bool wxRadioButton::GetValue() const
 152 {
 153     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 154
 155     return GTK_TOGGLE_BUTTON(m_widget)->active;
 156 }
 157
 158 bool wxRadioButton::Enable( bool enable )
 159 {
 160     if ( !wxControl::Enable( enable ) )
 161         return FALSE;
 162
 163     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 164
 165     return TRUE;
 166 }
 167
 168 void wxRadioButton::DoApplyWidgetStyle(GtkRcStyle *style)
 169 {
 170     gtk_widget_modify_style(m_widget, style);
 171     gtk_widget_modify_style(BUTTON_CHILD(m_widget), style);
 172 }
 173
 174 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 175 {
 176     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 177 }
 178
 179 void wxRadioButton::OnInternalIdle()
 180 {
 181     wxCursor cursor = m_cursor;
 182     if (g_globalCursor.IsOk()) cursor = g_globalCursor;
 183
 184     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 185     if ( win && cursor.IsOk())
 186     {
 187         /* I now set the cursor the anew in every OnInternalIdle call
 188        as setting the cursor in a parent window also effects the
 189        windows above so that checking for the current cursor is
 190        not possible. */
 191
 192        gdk_window_set_cursor( win, cursor.GetCursor() );
 193     }
 194
 195     if (g_delayedFocus == this)
 196     {
 197         if (GTK_WIDGET_REALIZED(m_widget))
 198         {
 199             gtk_widget_grab_focus( m_widget );
 200             g_delayedFocus = NULL;
 201         }
 202     }
 203
 204     if (wxUpdateUIEvent::CanUpdate(this))
 205         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 206 }
 207
 208 wxSize wxRadioButton::DoGetBestSize() const
 209 {
 210     return wxControl::DoGetBestSize();
 211 }
 212
 213 // static
 214 wxVisualAttributes
 215 wxRadioButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 216 {
 217     wxVisualAttributes attr;
 218     // NB: we need toplevel window so that GTK+ can find the right style
 219     GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 220     GtkWidget* widget = gtk_radio_button_new_with_label(NULL, "");
 221     gtk_container_add(GTK_CONTAINER(wnd), widget);
 222     attr = GetDefaultAttributesFromGTKWidget(widget);
 223     gtk_widget_destroy(wnd);
 224     return attr;
 225 }
 226
 227
 228 #endif