gecko/widget/gtk2/nsBidiKeyboard.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
2012-05-21 04:12:37 -07:00
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "prlink.h"
#include "nsBidiKeyboard.h"
#include <gtk/gtk.h>
static PRLibrary *gtklib = nullptr;
typedef gboolean (*GdkKeymapHaveBidiLayoutsType)(GdkKeymap *keymap);
static GdkKeymapHaveBidiLayoutsType GdkKeymapHaveBidiLayouts = nullptr;
NS_IMPL_ISUPPORTS1(nsBidiKeyboard, nsIBidiKeyboard)
nsBidiKeyboard::nsBidiKeyboard()
{
#if defined(MOZ_X11)
if (!gtklib)
gtklib = PR_LoadLibrary("libgtk-x11-2.0.so.0");
#else
return;
#endif
if (gtklib && !GdkKeymapHaveBidiLayouts)
GdkKeymapHaveBidiLayouts = (GdkKeymapHaveBidiLayoutsType) PR_FindFunctionSymbol(gtklib, "gdk_keymap_have_bidi_layouts");
SetHaveBidiKeyboards();
}
nsBidiKeyboard::~nsBidiKeyboard()
{
if (gtklib) {
PR_UnloadLibrary(gtklib);
gtklib = nullptr;
GdkKeymapHaveBidiLayouts = nullptr;
}
}
NS_IMETHODIMP
nsBidiKeyboard::IsLangRTL(bool *aIsRTL)
{
if (!mHaveBidiKeyboards)
return NS_ERROR_FAILURE;
*aIsRTL = (gdk_keymap_get_direction(NULL) == PANGO_DIRECTION_RTL);
return NS_OK;
}
nsresult
nsBidiKeyboard::SetHaveBidiKeyboards()
{
mHaveBidiKeyboards = false;
if (!gtklib || !GdkKeymapHaveBidiLayouts)
return NS_ERROR_FAILURE;
mHaveBidiKeyboards = (*GdkKeymapHaveBidiLayouts)(NULL);
return NS_OK;
}
NS_IMETHODIMP
nsBidiKeyboard::SetLangFromBidiLevel(PRUint8 aLevel)
{
// XXX Insert platform specific code to set keyboard language
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsBidiKeyboard::GetHaveBidiKeyboards(bool* aResult)
{
// not implemented yet
return NS_ERROR_NOT_IMPLEMENTED;
}