+}
+
+
+static bool
+wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
+ wxWindowGTK *win,
+ GdkEventKey *gdk_event)
+{
+ // VZ: it seems that GDK_KEY_RELEASE event doesn't set event->string
+ // but only event->keyval which is quite useless to us, so remember
+ // the last character from GDK_KEY_PRESS and reuse it as last resort
+ //
+ // NB: should be MT-safe as we're always called from the main thread only
+ static struct
+ {
+ KeySym keysym;
+ long keycode;
+ } s_lastKeyPress = { 0, 0 };
+
+ KeySym keysym = gdk_event->keyval;
+
+ wxLogTrace(TRACE_KEYS, _T("Key %s event: keysym = %ld"),
+ event.GetEventType() == wxEVT_KEY_UP ? _T("release")
+ : _T("press"),
+ keysym);
+
+ long key_code = wxTranslateKeySymToWXKey(keysym, false /* !isChar */);
+
+ if ( !key_code )
+ {
+ // 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, _T("\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, _T("\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;
+#if wxUSE_UNICODE
+ if ( gdk_event->type == GDK_KEY_PRESS || gdk_event->type == GDK_KEY_RELEASE )
+ {
+ event.m_uniChar = key_code;
+ }
+#endif
+
+ return true;
+}
+
+
+struct wxGtkIMData
+{
+ GtkIMContext *context;
+ GdkEventKey *lastKeyEvent;
+
+ wxGtkIMData()
+ {
+ context = gtk_im_multicontext_new();
+ lastKeyEvent = NULL;
+ }
+ ~wxGtkIMData()
+ {
+ g_object_unref (context);
+ }
+};
+
+extern "C" {
+static gboolean
+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->GetEventHandler()->ProcessEvent( event );
+ }
+ else
+ {
+ // Return after IM processing as we cannot do
+ // anything with it anyhow.
+ return_after_IM = true;
+ }
+
+ // 2005.01.26 modified by Hong Jen Yee (hzysoft@sina.com.tw):
+ // When we get a key_press event here, it could be originate
+ // from the current widget or its child widgets. However, only the widget
+ // with the INPUT FOCUS can generate the INITIAL key_press event. That is,
+ // if the CURRENT widget doesn't have the FOCUS at all, this event definitely
+ // originated from its child widgets and shouldn't be passed to IM context.
+ // In fact, what a GTK+ IM should do is filtering keyEvents and convert them
+ // into text input ONLY WHEN THE WIDGET HAS INPUT FOCUS. Besides, when current
+ // widgets has both IM context and input focus, the event should be filtered
+ // by gtk_im_context_filter_keypress().
+ // Then, we should, according to GTK+ 2.0 API doc, return whatever it returns.
+ if ((!ret) && (win->m_imData != NULL) && ( wxWindow::FindFocus() == win ))
+ {
+ // We should let GTK+ IM filter key event first. According to GTK+ 2.0 API
+ // docs, if IM filter returns true, no further processing should be done.
+ // we should send the key_down event anyway.
+ bool intercepted_by_IM = gtk_im_context_filter_keypress(win->m_imData->context, gdk_event);
+ win->m_imData->lastKeyEvent = NULL;
+ if (intercepted_by_IM)
+ {
+ wxLogTrace(TRACE_KEYS, _T("Key event intercepted by IM"));
+ return TRUE;
+ }
+ }
+
+ if (return_after_IM)
+ return FALSE;
projects / wxWidgets.git / blobdiff