widget/gtk/nsBidiKeyboard.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:expandtab:shiftwidth=4:tabstop=4:
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #include "prlink.h"
   9
  10 #include "nsBidiKeyboard.h"
  11 #include "nsIWidget.h"
  12 #include <gtk/gtk.h>
  13
  14 NS_IMPL_ISUPPORTS(nsBidiKeyboard, nsIBidiKeyboard)
  15
  16 nsBidiKeyboard::nsBidiKeyboard() { Reset(); }
  17
  18 NS_IMETHODIMP
  19 nsBidiKeyboard::Reset() {
  20   // NB: The default keymap can be null (e.g. in xpcshell). In that case,
  21   // simply assume that we don't have bidi keyboards.
  22   mHaveBidiKeyboards = false;
  23
  24   GdkDisplay* display = gdk_display_get_default();
  25   if (!display) return NS_OK;
  26
  27   GdkKeymap* keymap = gdk_keymap_get_for_display(display);
  28   mHaveBidiKeyboards = keymap && gdk_keymap_have_bidi_layouts(keymap);
  29   return NS_OK;
  30 }
  31
  32 nsBidiKeyboard::~nsBidiKeyboard() = default;
  33
  34 NS_IMETHODIMP
  35 nsBidiKeyboard::IsLangRTL(bool* aIsRTL) {
  36   if (!mHaveBidiKeyboards) return NS_ERROR_FAILURE;
  37
  38   *aIsRTL = (gdk_keymap_get_direction(gdk_keymap_get_default()) ==
  39              PANGO_DIRECTION_RTL);
  40
  41   return NS_OK;
  42 }
  43
  44 NS_IMETHODIMP nsBidiKeyboard::GetHaveBidiKeyboards(bool* aResult) {
  45   // not implemented yet
  46   return NS_ERROR_NOT_IMPLEMENTED;
  47 }
  48
  49 // static
  50 already_AddRefed<nsIBidiKeyboard> nsIWidget::CreateBidiKeyboardInner() {
  51   return do_AddRef(new nsBidiKeyboard());
  52 }