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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef XKBCOMMON_WORKAROUND_H
#define XKBCOMMON_WORKAROUND_H
// Function utf32_to_utf8() is borrowed from the libxkbcommon library,
// file keysym-utf.c. The workaround should be removed once the fix from
// https://bugs.freedesktop.org/show_bug.cgi?id=56780 gets released.
static int utf32_to_utf8(uint32_t unichar, char *buffer)
{
int count, shift, length;
uint8_t head;
if (unichar <= 0x007f) {
buffer[0] = unichar;
buffer[1] = '\0';
return 2;
}
else if (unichar <= 0x07FF) {
length = 2;
head = 0xc0;
}
else if (unichar <= 0xffff) {
length = 3;
head = 0xe0;
}
else if (unichar <= 0x1fffff) {
length = 4;
head = 0xf0;
}
else if (unichar <= 0x3ffffff) {
length = 5;
head = 0xf8;
}
else {
length = 6;
head = 0xfc;
}
for (count = length - 1, shift = 0; count > 0; count--, shift += 6)
buffer[count] = 0x80 | ((unichar >> shift) & 0x3f);
buffer[0] = head | ((unichar >> shift) & 0x3f);
buffer[length] = '\0';
return length + 1;
}
static bool needWorkaround(uint32_t sym)
{
/* patch encoding botch */
if (sym == XKB_KEY_KP_Space)
return true;
/* special keysyms */
if ((sym >= XKB_KEY_BackSpace && sym <= XKB_KEY_Clear) ||
(sym >= XKB_KEY_KP_Multiply && sym <= XKB_KEY_KP_9) ||
sym == XKB_KEY_Return || sym == XKB_KEY_Escape ||
sym == XKB_KEY_Delete || sym == XKB_KEY_KP_Tab ||
sym == XKB_KEY_KP_Enter || sym == XKB_KEY_KP_Equal)
return true;
return false;
}
#endif // XKBCOMMON_WORKAROUND_H
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