+ // do we have the translation or is it a plain ASCII character?
+ if ( (gdk_event->length == 1) || wxIsAsciiKeysym(keysym) )
+ {
+ // we should use keysym if it is ASCII as X does some translations
+ // like "I pressed while Control is down" => "Ctrl-I" == "TAB"
+ // which we don't want here (but which we do use for OnChar())
+ if ( !wxIsAsciiKeysym(keysym) )
+ {
+ keysym = (KeySym)gdk_event->string[0];
+ }
+
+ // we want to always get the same key code when the same key is
+ // pressed regardless of the state of the modifiers, i.e. on a
+ // standard US keyboard pressing '5' or '%' ('5' key with
+ // Shift) should result in the same key code in OnKeyDown():
+ // '5' (although OnChar() will get either '5' or '%').
+ //
+ // to do it we first translate keysym to keycode (== scan code)
+ // and then back but always using the lower register
+ Display *dpy = (Display *)wxGetDisplay();
+ KeyCode keycode = XKeysymToKeycode(dpy, keysym);
+
+ wxLogTrace(TRACE_KEYS, wxT("\t-> keycode %d"), keycode);
+
+ KeySym keysymNormalized = XKeycodeToKeysym(dpy, keycode, 0);
+
+ // use the normalized, i.e. lower register, keysym if we've
+ // got one
+ key_code = keysymNormalized ? keysymNormalized : keysym;
+
+ // as explained above, we want to have lower register key codes
+ // normally but for the letter keys we want to have the upper ones
+ //
+ // NB: don't use XConvertCase() here, we want to do it for letters
+ // only
+ key_code = toupper(key_code);
+ }
+ else // non ASCII key, what to do?
+ {
+ // by default, ignore it
+ key_code = 0;
+
+ // but if we have cached information from the last KEY_PRESS
+ if ( gdk_event->type == GDK_KEY_RELEASE )
+ {
+ // then reuse it
+ if ( keysym == s_lastKeyPress.keysym )
+ {
+ key_code = s_lastKeyPress.keycode;
+ }
+ }
+ }
+
+ if ( gdk_event->type == GDK_KEY_PRESS )
+ {
+ // remember it to be reused for KEY_UP event later
+ s_lastKeyPress.keysym = keysym;
+ s_lastKeyPress.keycode = key_code;
+ }
+ }
+
+ wxLogTrace(TRACE_KEYS, wxT("\t-> wxKeyCode %ld"), key_code);
+
+ // sending unknown key events doesn't really make sense
+ if ( !key_code )
+ return false;
+
+ // now fill all the other fields
+ wxFillOtherKeyEventFields(event, win, gdk_event);
+
+ event.m_keyCode = key_code;
+
+ return true;
+}
+
+
+extern "C" {
+static gint gtk_window_key_press_callback( GtkWidget *widget,
+ GdkEventKey *gdk_event,
+ wxWindow *win )
+{
+ DEBUG_MAIN_THREAD
+
+ if (g_isIdle)
+ wxapp_install_idle_handler();
+
+ if (!win->m_hasVMT)
+ return FALSE;
+ if (g_blockEventsOnDrag)
+ return FALSE;
+
+
+ wxKeyEvent event( wxEVT_KEY_DOWN );
+ bool ret = false;
+ bool return_after_IM = false;
+
+ if ( wxTranslateGTKKeyEventToWx(event, win, gdk_event) )
+ {
+ // Emit KEY_DOWN event
+ ret = win->HandleWindowEvent( event );
+ }
+ else
+ {
+ // Return after IM processing as we cannot do
+ // anything with it anyhow.
+ return_after_IM = true;
+ }
+
+ // This is for GTK+ 1.2 only. The char event generatation for GTK+ 2.0 is done
+ // in the "commit" handler.
+
+ // 2005.02.02 modified by Hong Jen Yee (hzysoft@sina.com.tw).
+ // In GTK+ 1.2, strings sent by IMs are also regarded as key_press events whose
+ // keyCodes cannot be recognized by wxWidgets. These MBCS strings, however, are
+ // composed of more than one character, which means gdk_event->length will always
+ // greater than one. When gtk_event->length == 1, this may be an ASCII character
+ // and can be translated by wx. However, when MBCS characters are sent by IM,
+ // gdk_event->length will >= 2. So neither should we pass it to accelerator table,
+ // nor should we pass it to controls. The following explanation was excerpted
+ // from GDK documentation.
+ // gint length : the length of string.
+ // gchar *string : a null-terminated multi-byte string containing the composed
+ // characters resulting from the key press. When text is being input, in a GtkEntry
+ // for example, it is these characters which should be added to the input buffer.
+ // When using Input Methods to support internationalized text input, the composed
+ // characters appear here after the pre-editing has been completed.
+
+ if ( (!ret) && (gdk_event->length > 1) ) // If this event contains a pre-edited string from IM.
+ {
+ // We should translate this key event into wxEVT_CHAR not wxEVT_KEY_DOWN.
+ #if wxUSE_UNICODE // GTK+ 1.2 is not UTF-8 based.
+ const wxWCharBuffer string = wxConvLocal.cMB2WC( gdk_event->string );
+ if( !string )
+ return false;
+ #else
+ const char* string = gdk_event->string;
+ #endif
+
+ // Implement OnCharHook by checking ancestor top level windows
+ wxWindow *parent = win;
+ while (parent && !parent->IsTopLevel())
+ parent = parent->GetParent();
+
+ for( const wxChar* pstr = string; *pstr; pstr++ )
+ {
+ #if wxUSE_UNICODE
+ event.m_uniChar = *pstr;
+ // Backward compatible for ISO-8859-1
+ event.m_keyCode = *pstr < 256 ? event.m_uniChar : 0;
+ #else
+ event.m_keyCode = *pstr;
+ #endif
+ if (parent)
+ {
+ event.SetEventType( wxEVT_CHAR_HOOK );
+ ret = parent->HandleWindowEvent( event );
+ }
+ if (!ret)
+ {
+ event.SetEventType(wxEVT_CHAR);
+ win->HandleWindowEvent( event );
+ }
+ }
+ return true;
+ }
+
+ if (return_after_IM)
+ return false;
+
+#if wxUSE_ACCEL
+ if (!ret)
+ {
+ wxWindowGTK *ancestor = win;
+ while (ancestor)
+ {
+ int command = ancestor->GetAcceleratorTable()->GetCommand( event );
+ if (command != -1)
+ {
+ wxCommandEvent command_event( wxEVT_COMMAND_MENU_SELECTED, command );
+ ret = ancestor->HandleWindowEvent( command_event );
+ break;
+ }
+ if (ancestor->IsTopLevel())
+ break;
+ ancestor = ancestor->GetParent();
+ }
+ }
+#endif // wxUSE_ACCEL
+
+ // Only send wxEVT_CHAR event if not processed yet. Thus, ALT-x
+ // will only be sent if it is not in an accelerator table.
+ if (!ret)
+ {
+ long key_code;
+ KeySym keysym = gdk_event->keyval;
+ // Find key code for EVT_CHAR and EVT_CHAR_HOOK events
+ key_code = wxTranslateKeySymToWXKey(keysym, true /* isChar */);
+ if ( !key_code )
+ {
+ if ( wxIsAsciiKeysym(keysym) )
+ {
+ // ASCII key
+ key_code = (unsigned char)keysym;
+ }
+ // gdk_event->string is actually deprecated
+ else if ( gdk_event->length == 1 )
+ {
+ key_code = (unsigned char)gdk_event->string[0];
+ }
+ }
+
+ if ( key_code )
+ {
+ wxLogTrace(TRACE_KEYS, wxT("Char event: %ld"), key_code);
+
+ event.m_keyCode = key_code;
+
+ // Implement OnCharHook by checking ancestor top level windows
+ wxWindow *parent = win;
+ while (parent && !parent->IsTopLevel())
+ parent = parent->GetParent();
+ if (parent)
+ {
+ event.SetEventType( wxEVT_CHAR_HOOK );
+ ret = parent->HandleWindowEvent( event );
+ }
+
+ if (!ret)
+ {
+ event.SetEventType(wxEVT_CHAR);
+ ret = win->HandleWindowEvent( event );
+ }
+ }
+ }
+
+
+
+
+
+ // win is a control: tab can be propagated up
+ if ( !ret &&
+ ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab)) &&
+// VZ: testing for wxTE_PROCESS_TAB shouldn't be done here - the control may
+// have this style, yet choose not to process this particular TAB in which
+// case TAB must still work as a navigational character
+// JS: enabling again to make consistent with other platforms
+// (with wxTE_PROCESS_TAB you have to call Navigate to get default
+// navigation behaviour)
+#if wxUSE_TEXTCTRL
+ (! (win->HasFlag(wxTE_PROCESS_TAB) && win->IsKindOf(CLASSINFO(wxTextCtrl)) )) &&
+#endif
+ win->GetParent() && (win->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
+ {
+ wxNavigationKeyEvent new_event;
+ new_event.SetEventObject( win->GetParent() );
+ // GDK reports GDK_ISO_Left_Tab for SHIFT-TAB
+ new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
+ // CTRL-TAB changes the (parent) window, i.e. switch notebook page
+ new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
+ new_event.SetCurrentFocus( win );
+ ret = win->GetParent()->HandleWindowEvent( new_event );
+ }
+
+ // generate wxID_CANCEL if <esc> has been pressed (typically in dialogs)
+ if ( !ret &&
+ (gdk_event->keyval == GDK_Escape) )
+ {
+ // however only do it if we have a Cancel button in the dialog,
+ // otherwise the user code may get confused by the events from a
+ // non-existing button and, worse, a wxButton might get button event
+ // from another button which is not really expected
+ wxWindow *winForCancel = win,
+ *btnCancel = NULL;
+ while ( winForCancel )
+ {
+ btnCancel = winForCancel->FindWindow(wxID_CANCEL);
+ if ( btnCancel )
+ {
+ // found a cancel button
+ break;
+ }
+
+ if ( winForCancel->IsTopLevel() )
+ {
+ // no need to look further
+ break;
+ }
+
+ // maybe our parent has a cancel button?
+ winForCancel = winForCancel->GetParent();
+ }
+
+ if ( btnCancel )
+ {
+ wxCommandEvent eventClick(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+ eventClick.SetEventObject(btnCancel);
+ ret = btnCancel->HandleWindowEvent(eventClick);
+ }
+ }
+
+ if (ret)
+ {
+ gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
projects / wxWidgets.git / blobdiff