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/defs.h"
  16
  17 #if wxUSE_RADIOBOX
  18
  19 #include "wx/radiobut.h"
  20
  21 #include "wx/gtk/private.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // idle system
  25 //-----------------------------------------------------------------------------
  26
  27 extern void wxapp_install_idle_handler();
  28 extern bool g_isIdle;
  29
  30 //-----------------------------------------------------------------------------
  31 // data
  32 //-----------------------------------------------------------------------------
  33
  34 extern bool           g_blockEventsOnDrag;
  35 extern wxCursor       g_globalCursor;
  36 extern wxWindowGTK   *g_delayedFocus;
  37
  38 //-----------------------------------------------------------------------------
  39 // "clicked"
  40 //-----------------------------------------------------------------------------
  41
  42 static
  43 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  44 {
  45     if (g_isIdle) wxapp_install_idle_handler();
  46
  47     if (!rb->m_hasVMT) return;
  48
  49     if (g_blockEventsOnDrag) return;
  50
  51     if (!button->active) return;
  52
  53     if (rb->m_blockEvent) return;
  54
  55     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  56     event.SetInt( rb->GetValue() );
  57     event.SetEventObject( rb );
  58     rb->GetEventHandler()->ProcessEvent( event );
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // wxRadioButton
  63 //-----------------------------------------------------------------------------
  64
  65 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  66
  67 bool wxRadioButton::Create( wxWindow *parent,
  68                             wxWindowID id,
  69                             const wxString& label,
  70                             const wxPoint& pos,
  71                             const wxSize& size,
  72                             long style,
  73                             const wxValidator& validator,
  74                             const wxString& name )
  75 {
  76     m_acceptsFocus = TRUE;
  77     m_needParent = TRUE;
  78
  79     m_blockEvent = FALSE;
  80
  81     if (!PreCreation( parent, pos, size ) ||
  82         !CreateBase( parent, id, pos, size, style, validator, name ))
  83     {
  84         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  85         return FALSE;
  86     }
  87
  88     if (HasFlag(wxRB_GROUP))
  89     {
  90         // start a new group
  91         m_radioButtonGroup = (GSList*) NULL;
  92     }
  93     else
  94     {
  95         // search backward for last group start
  96         wxRadioButton *chief = (wxRadioButton*) NULL;
  97         wxWindowList::Node *node = parent->GetChildren().GetLast();
  98         while (node)
  99         {
 100             wxWindow *child = node->GetData();
 101             if (child->IsRadioButton())
 102             {
 103                 chief = (wxRadioButton*) child;
 104                 if (child->HasFlag(wxRB_GROUP))
 105                     break;
 106             }
 107             node = node->GetPrevious();
 108         }
 109         if (chief)
 110         {
 111             // we are part of the group started by chief
 112             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 113         }
 114         else
 115         {
 116             // start a new group
 117             m_radioButtonGroup = (GSList*) NULL;
 118         }
 119     }
 120
 121     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, wxGTK_CONV( label ) );
 122
 123     SetLabel(label);
 124
 125     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 126       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 127
 128     m_parent->DoAddChild( this );
 129
 130     PostCreation();
 131
 132     SetFont( parent->GetFont() );
 133
 134     wxSize size_best( DoGetBestSize() );
 135     wxSize new_size( size );
 136     if (new_size.x == -1)
 137         new_size.x = size_best.x;
 138     if (new_size.y == -1)
 139         new_size.y = size_best.y;
 140     if ((new_size.x != size.x) || (new_size.y != size.y))
 141         SetSize( new_size.x, new_size.y );
 142
 143     SetBackgroundColour( parent->GetBackgroundColour() );
 144     SetForegroundColour( parent->GetForegroundColour() );
 145
 146     Show( TRUE );
 147
 148     return TRUE;
 149 }
 150
 151 void wxRadioButton::SetLabel( const wxString& label )
 152 {
 153     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 154
 155     wxControl::SetLabel( label );
 156     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 157     gtk_label_set( g_label, wxGTK_CONV( GetLabel() ) );
 158 }
 159
 160 void wxRadioButton::SetValue( bool val )
 161 {
 162     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 163
 164     if (val == GetValue())
 165         return;
 166
 167     m_blockEvent = TRUE;
 168
 169     if (val)
 170     {
 171         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 172     }
 173     else
 174     {
 175         // should give an assert
 176         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 177         //      as FALSE.  Failing silently is probably TRTTD here.
 178     }
 179
 180     m_blockEvent = FALSE;
 181 }
 182
 183 bool wxRadioButton::GetValue() const
 184 {
 185     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 186
 187     return GTK_TOGGLE_BUTTON(m_widget)->active;
 188 }
 189
 190 bool wxRadioButton::Enable( bool enable )
 191 {
 192     if ( !wxControl::Enable( enable ) )
 193         return FALSE;
 194
 195     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 196
 197     return TRUE;
 198 }
 199
 200 void wxRadioButton::ApplyWidgetStyle()
 201 {
 202     SetWidgetStyle();
 203     gtk_widget_set_style( m_widget, m_widgetStyle );
 204     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 205 }
 206
 207 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 208 {
 209     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 210 }
 211
 212 void wxRadioButton::OnInternalIdle()
 213 {
 214     wxCursor cursor = m_cursor;
 215     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 216
 217     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 218     if ( win && cursor.Ok())
 219     {
 220         /* I now set the cursor the anew in every OnInternalIdle call
 221        as setting the cursor in a parent window also effects the
 222        windows above so that checking for the current cursor is
 223        not possible. */
 224
 225        gdk_window_set_cursor( win, cursor.GetCursor() );
 226     }
 227
 228     if (g_delayedFocus == this)
 229     {
 230         if (GTK_WIDGET_REALIZED(m_widget))
 231         {
 232             gtk_widget_grab_focus( m_widget );
 233             g_delayedFocus = NULL;
 234         }
 235     }
 236
 237     UpdateWindowUI();
 238 }
 239
 240 wxSize wxRadioButton::DoGetBestSize() const
 241 {
 242     return wxControl::DoGetBestSize();
 243 }
 244
 245 #endif