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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QEVDEVKEYBOARDHANDLER_P_H
#define QEVDEVKEYBOARDHANDLER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <qobject.h>
#include <QTimer>
#include <QDataStream>
#include <private/qglobal_p.h>
#include <memory>
QT_BEGIN_NAMESPACE
class QSocketNotifier;
namespace QEvdevKeyboardMap {
const quint32 FileMagic = 0x514d4150; // 'QMAP'
struct Mapping {
quint16 keycode;
quint16 unicode;
quint32 qtcode;
quint8 modifiers;
quint8 flags;
quint16 special;
};
enum Flags {
IsDead = 0x01,
IsLetter = 0x02,
IsModifier = 0x04,
IsSystem = 0x08
};
enum System {
SystemConsoleFirst = 0x0100,
SystemConsoleMask = 0x007f,
SystemConsoleLast = 0x017f,
SystemConsolePrevious = 0x0180,
SystemConsoleNext = 0x0181,
SystemReboot = 0x0200,
SystemZap = 0x0300
};
struct Composing {
quint16 first;
quint16 second;
quint16 result;
};
enum Modifiers {
ModPlain = 0x00,
ModShift = 0x01,
ModAltGr = 0x02,
ModControl = 0x04,
ModAlt = 0x08,
ModShiftL = 0x10,
ModShiftR = 0x20,
ModCtrlL = 0x40,
ModCtrlR = 0x80
// ModCapsShift = 0x100, // not supported!
};
}
inline QDataStream &operator>>(QDataStream &ds, QEvdevKeyboardMap::Mapping &m)
{
return ds >> m.keycode >> m.unicode >> m.qtcode >> m.modifiers >> m.flags >> m.special;
}
inline QDataStream &operator<<(QDataStream &ds, const QEvdevKeyboardMap::Mapping &m)
{
return ds << m.keycode << m.unicode << m.qtcode << m.modifiers << m.flags << m.special;
}
inline QDataStream &operator>>(QDataStream &ds, QEvdevKeyboardMap::Composing &c)
{
return ds >> c.first >> c.second >> c.result;
}
inline QDataStream &operator<<(QDataStream &ds, const QEvdevKeyboardMap::Composing &c)
{
return ds << c.first << c.second << c.result;
}
class QFdContainer
{
int m_fd;
Q_DISABLE_COPY_MOVE(QFdContainer);
public:
Q_NODISCARD_CTOR explicit QFdContainer(int fd = -1) noexcept : m_fd(fd) {}
~QFdContainer() { reset(); }
int get() const noexcept { return m_fd; }
int release() noexcept { int result = m_fd; m_fd = -1; return result; }
void reset() noexcept;
void reset(int fd) { reset(); m_fd = fd; }
};
class QEvdevKeyboardHandler : public QObject
{
public:
QEvdevKeyboardHandler(const QString &device, QFdContainer &fd, bool disableZap, bool enableCompose, const QString &keymapFile);
~QEvdevKeyboardHandler();
enum KeycodeAction {
None = 0,
CapsLockOff = 0x01000000,
CapsLockOn = 0x01000001,
NumLockOff = 0x02000000,
NumLockOn = 0x02000001,
ScrollLockOff = 0x03000000,
ScrollLockOn = 0x03000001,
Reboot = 0x04000000,
PreviousConsole = 0x05000000,
NextConsole = 0x05000001,
SwitchConsoleFirst = 0x06000000,
SwitchConsoleLast = 0x0600007f,
SwitchConsoleMask = 0x0000007f
};
static std::unique_ptr<QEvdevKeyboardHandler> create(const QString &device,
const QString &specification,
const QString &defaultKeymapFile = QString());
static Qt::KeyboardModifiers toQtModifiers(quint8 mod)
{
Qt::KeyboardModifiers qtmod = Qt::NoModifier;
if (mod & (QEvdevKeyboardMap::ModShift | QEvdevKeyboardMap::ModShiftL | QEvdevKeyboardMap::ModShiftR))
qtmod |= Qt::ShiftModifier;
if (mod & (QEvdevKeyboardMap::ModControl | QEvdevKeyboardMap::ModCtrlL | QEvdevKeyboardMap::ModCtrlR))
qtmod |= Qt::ControlModifier;
if (mod & QEvdevKeyboardMap::ModAlt)
qtmod |= Qt::AltModifier;
return qtmod;
}
bool loadKeymap(const QString &file);
void unloadKeymap();
void readKeycode();
KeycodeAction processKeycode(quint16 keycode, bool pressed, bool autorepeat);
void switchLang();
private:
void processKeyEvent(int nativecode, int unicode, int qtcode,
Qt::KeyboardModifiers modifiers, bool isPress, bool autoRepeat);
void switchLed(int, bool);
QString m_device;
QFdContainer m_fd;
QSocketNotifier *m_notify;
// keymap handling
quint8 m_modifiers;
quint8 m_locks[3];
int m_composing;
quint16 m_dead_unicode;
quint8 m_langLock;
bool m_no_zap;
bool m_do_compose;
const QEvdevKeyboardMap::Mapping *m_keymap;
int m_keymap_size;
const QEvdevKeyboardMap::Composing *m_keycompose;
int m_keycompose_size;
static const QEvdevKeyboardMap::Mapping s_keymap_default[];
static const QEvdevKeyboardMap::Composing s_keycompose_default[];
};
QT_END_NAMESPACE
#endif // QEVDEVKEYBOARDHANDLER_P_H
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