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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  12 #pragma implementation "radiobut.h"
  13 #endif
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #if wxUSE_RADIOBOX
  19
  20 #include "wx/radiobut.h"
  21
  22 #include "wx/gtk/private.h"
  23
  24 //-----------------------------------------------------------------------------
  25 // idle system
  26 //-----------------------------------------------------------------------------
  27
  28 extern void wxapp_install_idle_handler();
  29 extern bool g_isIdle;
  30
  31 //-----------------------------------------------------------------------------
  32 // data
  33 //-----------------------------------------------------------------------------
  34
  35 extern bool           g_blockEventsOnDrag;
  36 extern wxCursor       g_globalCursor;
  37 extern wxWindowGTK   *g_delayedFocus;
  38
  39 //-----------------------------------------------------------------------------
  40 // "clicked"
  41 //-----------------------------------------------------------------------------
  42
  43 static
  44 void gtk_radiobutton_clicked_callback( GtkToggleButton *button, wxRadioButton *rb )
  45 {
  46     if (g_isIdle) wxapp_install_idle_handler();
  47
  48     if (!rb->m_hasVMT) return;
  49
  50     if (g_blockEventsOnDrag) return;
  51
  52     if (!button->active) return;
  53
  54     if (rb->m_blockEvent) return;
  55
  56     wxCommandEvent event( wxEVT_COMMAND_RADIOBUTTON_SELECTED, rb->GetId());
  57     event.SetInt( rb->GetValue() );
  58     event.SetEventObject( rb );
  59     rb->GetEventHandler()->ProcessEvent( event );
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // wxRadioButton
  64 //-----------------------------------------------------------------------------
  65
  66 IMPLEMENT_DYNAMIC_CLASS(wxRadioButton,wxControl)
  67
  68 bool wxRadioButton::Create( wxWindow *parent,
  69                             wxWindowID id,
  70                             const wxString& label,
  71                             const wxPoint& pos,
  72                             const wxSize& size,
  73                             long style,
  74                             const wxValidator& validator,
  75                             const wxString& name )
  76 {
  77     m_acceptsFocus = TRUE;
  78     m_needParent = TRUE;
  79
  80     m_blockEvent = FALSE;
  81
  82     if (!PreCreation( parent, pos, size ) ||
  83         !CreateBase( parent, id, pos, size, style, validator, name ))
  84     {
  85         wxFAIL_MSG( wxT("wxRadioButton creation failed") );
  86         return FALSE;
  87     }
  88
  89     if (HasFlag(wxRB_GROUP))
  90     {
  91         // start a new group
  92         m_radioButtonGroup = (GSList*) NULL;
  93     }
  94     else
  95     {
  96         // search backward for last group start
  97         wxRadioButton *chief = (wxRadioButton*) NULL;
  98         wxWindowList::compatibility_iterator node = parent->GetChildren().GetLast();
  99         while (node)
 100         {
 101             wxWindow *child = node->GetData();
 102             if (child->IsRadioButton())
 103             {
 104                 chief = (wxRadioButton*) child;
 105                 if (child->HasFlag(wxRB_GROUP))
 106                     break;
 107             }
 108             node = node->GetPrevious();
 109         }
 110         if (chief)
 111         {
 112             // we are part of the group started by chief
 113             m_radioButtonGroup = gtk_radio_button_group( GTK_RADIO_BUTTON(chief->m_widget) );
 114         }
 115         else
 116         {
 117             // start a new group
 118             m_radioButtonGroup = (GSList*) NULL;
 119         }
 120     }
 121
 122     m_widget = gtk_radio_button_new_with_label( m_radioButtonGroup, wxGTK_CONV( label ) );
 123
 124     SetLabel(label);
 125
 126     gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
 127       GTK_SIGNAL_FUNC(gtk_radiobutton_clicked_callback), (gpointer*)this );
 128
 129     m_parent->DoAddChild( this );
 130
 131     PostCreation();
 132
 133     SetFont( parent->GetFont() );
 134
 135     wxSize size_best( DoGetBestSize() );
 136     wxSize new_size( size );
 137     if (new_size.x == -1)
 138         new_size.x = size_best.x;
 139     if (new_size.y == -1)
 140         new_size.y = size_best.y;
 141     if ((new_size.x != size.x) || (new_size.y != size.y))
 142         SetSize( new_size.x, new_size.y );
 143
 144     SetBackgroundColour( parent->GetBackgroundColour() );
 145     SetForegroundColour( parent->GetForegroundColour() );
 146
 147     Show( TRUE );
 148
 149     return TRUE;
 150 }
 151
 152 void wxRadioButton::SetLabel( const wxString& label )
 153 {
 154     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 155
 156     wxControl::SetLabel( label );
 157     GtkLabel *g_label = GTK_LABEL( BUTTON_CHILD(m_widget) );
 158 #ifdef __WXGTK20__
 159     wxString label2 = PrepareLabelMnemonics( label );
 160     gtk_label_set_text_with_mnemonic( g_label, wxGTK_CONV( label2 ) );
 161 #else
 162     gtk_label_set( g_label, wxGTK_CONV( GetLabel() ) );
 163 #endif
 164 }
 165
 166 void wxRadioButton::SetValue( bool val )
 167 {
 168     wxCHECK_RET( m_widget != NULL, wxT("invalid radiobutton") );
 169
 170     if (val == GetValue())
 171         return;
 172
 173     m_blockEvent = TRUE;
 174
 175     if (val)
 176     {
 177         gtk_toggle_button_set_active( GTK_TOGGLE_BUTTON(m_widget), TRUE );
 178     }
 179     else
 180     {
 181         // should give an assert
 182         // RL - No it shouldn't.  A wxGenericValidator might try to set it
 183         //      as FALSE.  Failing silently is probably TRTTD here.
 184     }
 185
 186     m_blockEvent = FALSE;
 187 }
 188
 189 bool wxRadioButton::GetValue() const
 190 {
 191     wxCHECK_MSG( m_widget != NULL, FALSE, wxT("invalid radiobutton") );
 192
 193     return GTK_TOGGLE_BUTTON(m_widget)->active;
 194 }
 195
 196 bool wxRadioButton::Enable( bool enable )
 197 {
 198     if ( !wxControl::Enable( enable ) )
 199         return FALSE;
 200
 201     gtk_widget_set_sensitive( BUTTON_CHILD(m_widget), enable );
 202
 203     return TRUE;
 204 }
 205
 206 void wxRadioButton::ApplyWidgetStyle()
 207 {
 208     SetWidgetStyle();
 209     gtk_widget_set_style( m_widget, m_widgetStyle );
 210     gtk_widget_set_style( BUTTON_CHILD(m_widget), m_widgetStyle );
 211 }
 212
 213 bool wxRadioButton::IsOwnGtkWindow( GdkWindow *window )
 214 {
 215     return window == TOGGLE_BUTTON_EVENT_WIN(m_widget);
 216 }
 217
 218 void wxRadioButton::OnInternalIdle()
 219 {
 220     wxCursor cursor = m_cursor;
 221     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 222
 223     GdkWindow *win = TOGGLE_BUTTON_EVENT_WIN(m_widget);
 224     if ( win && cursor.Ok())
 225     {
 226         /* I now set the cursor the anew in every OnInternalIdle call
 227        as setting the cursor in a parent window also effects the
 228        windows above so that checking for the current cursor is
 229        not possible. */
 230
 231        gdk_window_set_cursor( win, cursor.GetCursor() );
 232     }
 233
 234     if (g_delayedFocus == this)
 235     {
 236         if (GTK_WIDGET_REALIZED(m_widget))
 237         {
 238             gtk_widget_grab_focus( m_widget );
 239             g_delayedFocus = NULL;
 240         }
 241     }
 242
 243     if (wxUpdateUIEvent::CanUpdate(this))
 244         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
 245 }
 246
 247 wxSize wxRadioButton::DoGetBestSize() const
 248 {
 249     return wxControl::DoGetBestSize();
 250 }
 251
 252 #endif