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