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Diffstat (limited to 'src/platformsupport/input/libinput/qlibinputkeyboard.cpp')
| -rw-r--r-- | src/platformsupport/input/libinput/qlibinputkeyboard.cpp | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/src/platformsupport/input/libinput/qlibinputkeyboard.cpp b/src/platformsupport/input/libinput/qlibinputkeyboard.cpp new file mode 100644 index 0000000000..41c849e8a5 --- /dev/null +++ b/src/platformsupport/input/libinput/qlibinputkeyboard.cpp @@ -0,0 +1,279 @@ +/**************************************************************************** +** +** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the plugins module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qlibinputkeyboard_p.h" +#include <QtCore/QTextCodec> +#include <qpa/qwindowsysteminterface.h> +#include <libinput.h> +#ifndef QT_NO_XKBCOMMON_EVDEV +#include <xkbcommon/xkbcommon-keysyms.h> +#include <xkbcommon/xkbcommon-names.h> +#endif + +QT_BEGIN_NAMESPACE + +const int REPEAT_DELAY = 500; +const int REPEAT_RATE = 100; + +#ifndef QT_NO_XKBCOMMON_EVDEV +struct KeyTabEntry { + int xkbkey; + int qtkey; +}; + +static inline bool operator==(const KeyTabEntry &a, const KeyTabEntry &b) +{ + return a.xkbkey == b.xkbkey; +} + +static const KeyTabEntry keyTab[] = { + { XKB_KEY_Escape, Qt::Key_Escape }, + { XKB_KEY_Tab, Qt::Key_Tab }, + { XKB_KEY_ISO_Left_Tab, Qt::Key_Backtab }, + { XKB_KEY_BackSpace, Qt::Key_Backspace }, + { XKB_KEY_Return, Qt::Key_Return }, + { XKB_KEY_Insert, Qt::Key_Insert }, + { XKB_KEY_Delete, Qt::Key_Delete }, + { XKB_KEY_Clear, Qt::Key_Delete }, + { XKB_KEY_Pause, Qt::Key_Pause }, + { XKB_KEY_Print, Qt::Key_Print }, + + { XKB_KEY_Home, Qt::Key_Home }, + { XKB_KEY_End, Qt::Key_End }, + { XKB_KEY_Left, Qt::Key_Left }, + { XKB_KEY_Up, Qt::Key_Up }, + { XKB_KEY_Right, Qt::Key_Right }, + { XKB_KEY_Down, Qt::Key_Down }, + { XKB_KEY_Prior, Qt::Key_PageUp }, + { XKB_KEY_Next, Qt::Key_PageDown }, + + { XKB_KEY_Shift_L, Qt::Key_Shift }, + { XKB_KEY_Shift_R, Qt::Key_Shift }, + { XKB_KEY_Shift_Lock, Qt::Key_Shift }, + { XKB_KEY_Control_L, Qt::Key_Control }, + { XKB_KEY_Control_R, Qt::Key_Control }, + { XKB_KEY_Meta_L, Qt::Key_Meta }, + { XKB_KEY_Meta_R, Qt::Key_Meta }, + { XKB_KEY_Alt_L, Qt::Key_Alt }, + { XKB_KEY_Alt_R, Qt::Key_Alt }, + { XKB_KEY_Caps_Lock, Qt::Key_CapsLock }, + { XKB_KEY_Num_Lock, Qt::Key_NumLock }, + { XKB_KEY_Scroll_Lock, Qt::Key_ScrollLock }, + { XKB_KEY_Super_L, Qt::Key_Super_L }, + { XKB_KEY_Super_R, Qt::Key_Super_R }, + { XKB_KEY_Menu, Qt::Key_Menu }, + { XKB_KEY_Hyper_L, Qt::Key_Hyper_L }, + { XKB_KEY_Hyper_R, Qt::Key_Hyper_R }, + { XKB_KEY_Help, Qt::Key_Help }, + + { XKB_KEY_KP_Space, Qt::Key_Space }, + { XKB_KEY_KP_Tab, Qt::Key_Tab }, + { XKB_KEY_KP_Enter, Qt::Key_Enter }, + { XKB_KEY_KP_Home, Qt::Key_Home }, + { XKB_KEY_KP_Left, Qt::Key_Left }, + { XKB_KEY_KP_Up, Qt::Key_Up }, + { XKB_KEY_KP_Right, Qt::Key_Right }, + { XKB_KEY_KP_Down, Qt::Key_Down }, + { XKB_KEY_KP_Prior, Qt::Key_PageUp }, + { XKB_KEY_KP_Next, Qt::Key_PageDown }, + { XKB_KEY_KP_End, Qt::Key_End }, + { XKB_KEY_KP_Begin, Qt::Key_Clear }, + { XKB_KEY_KP_Insert, Qt::Key_Insert }, + { XKB_KEY_KP_Delete, Qt::Key_Delete }, + { XKB_KEY_KP_Equal, Qt::Key_Equal }, + { XKB_KEY_KP_Multiply, Qt::Key_Asterisk }, + { XKB_KEY_KP_Add, Qt::Key_Plus }, + { XKB_KEY_KP_Separator, Qt::Key_Comma }, + { XKB_KEY_KP_Subtract, Qt::Key_Minus }, + { XKB_KEY_KP_Decimal, Qt::Key_Period }, + { XKB_KEY_KP_Divide, Qt::Key_Slash }, +}; +#endif + +QLibInputKeyboard::QLibInputKeyboard() +#ifndef QT_NO_XKBCOMMON_EVDEV + : m_ctx(0), + m_keymap(0), + m_state(0) +#endif +{ +#ifndef QT_NO_XKBCOMMON_EVDEV + m_ctx = xkb_context_new(XKB_CONTEXT_NO_FLAGS); + if (!m_ctx) { + qWarning("Failed to create xkb context"); + return; + } + m_keymap = xkb_keymap_new_from_names(m_ctx, Q_NULLPTR, XKB_KEYMAP_COMPILE_NO_FLAGS); + if (!m_keymap) { + qWarning("Failed to compile keymap"); + return; + } + m_state = xkb_state_new(m_keymap); + if (!m_state) { + qWarning("Failed to create xkb state"); + return; + } + m_modindex[0] = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_CTRL); + m_modindex[1] = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_ALT); + m_modindex[2] = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_SHIFT); + m_modindex[3] = xkb_keymap_mod_get_index(m_keymap, XKB_MOD_NAME_LOGO); + + m_repeatTimer.setSingleShot(true); + connect(&m_repeatTimer, &QTimer::timeout, this, &QLibInputKeyboard::handleRepeat); +#endif +} + +QLibInputKeyboard::~QLibInputKeyboard() +{ +#ifndef QT_NO_XKBCOMMON_EVDEV + if (m_state) + xkb_state_unref(m_state); + if (m_keymap) + xkb_keymap_unref(m_keymap); + if (m_ctx) + xkb_context_unref(m_ctx); +#endif +} + +void QLibInputKeyboard::processKey(libinput_event_keyboard *e) +{ +#ifndef QT_NO_XKBCOMMON_EVDEV + if (!m_ctx || !m_keymap || !m_state) + return; + + const uint32_t k = libinput_event_keyboard_get_key(e) + 8; + const bool pressed = libinput_event_keyboard_get_key_state(e) == LIBINPUT_KEY_STATE_PRESSED; + + QByteArray chars; + chars.resize(1 + xkb_state_key_get_utf8(m_state, k, Q_NULLPTR, 0)); + xkb_state_key_get_utf8(m_state, k, chars.data(), chars.size()); + const QString text = QString::fromUtf8(chars); + + const xkb_keysym_t sym = xkb_state_key_get_one_sym(m_state, k); + + Qt::KeyboardModifiers mods = Qt::NoModifier; + const int qtkey = keysymToQtKey(sym, &mods, text); + + xkb_state_component modtype = xkb_state_component(XKB_STATE_MODS_DEPRESSED | XKB_STATE_MODS_LATCHED); + if (xkb_state_mod_index_is_active(m_state, m_modindex[0], modtype) && (qtkey != Qt::Key_Control || !pressed)) + mods |= Qt::ControlModifier; + if (xkb_state_mod_index_is_active(m_state, m_modindex[1], modtype) && (qtkey != Qt::Key_Alt || !pressed)) + mods |= Qt::AltModifier; + if (xkb_state_mod_index_is_active(m_state, m_modindex[2], modtype) && (qtkey != Qt::Key_Shift || !pressed)) + mods |= Qt::ShiftModifier; + if (xkb_state_mod_index_is_active(m_state, m_modindex[3], modtype) && (qtkey != Qt::Key_Meta || !pressed)) + mods |= Qt::MetaModifier; + + xkb_state_update_key(m_state, k, pressed ? XKB_KEY_DOWN : XKB_KEY_UP); + + QWindowSystemInterface::handleExtendedKeyEvent(Q_NULLPTR, + pressed ? QEvent::KeyPress : QEvent::KeyRelease, + qtkey, mods, k, sym, mods, text); + + if (pressed && xkb_keymap_key_repeats(m_keymap, k)) { + m_repeatData.qtkey = qtkey; + m_repeatData.mods = mods; + m_repeatData.nativeScanCode = k; + m_repeatData.virtualKey = sym; + m_repeatData.nativeMods = mods; + m_repeatData.unicodeText = text; + m_repeatData.repeatCount = 1; + m_repeatTimer.setInterval(REPEAT_DELAY); + m_repeatTimer.start(); + } else if (m_repeatTimer.isActive()) { + m_repeatTimer.stop(); + } + +#else + Q_UNUSED(e); +#endif +} + +#ifndef QT_NO_XKBCOMMON_EVDEV +void QLibInputKeyboard::handleRepeat() +{ + QWindowSystemInterface::handleExtendedKeyEvent(Q_NULLPTR, QEvent::KeyPress, + m_repeatData.qtkey, m_repeatData.mods, + m_repeatData.nativeScanCode, m_repeatData.virtualKey, m_repeatData.nativeMods, + m_repeatData.unicodeText, true, m_repeatData.repeatCount); + m_repeatData.repeatCount += 1; + m_repeatTimer.setInterval(REPEAT_RATE); + m_repeatTimer.start(); +} + +int QLibInputKeyboard::keysymToQtKey(xkb_keysym_t key) const +{ + const size_t elemCount = sizeof(keyTab) / sizeof(KeyTabEntry); + KeyTabEntry e; + e.xkbkey = key; + const KeyTabEntry *result = std::find(keyTab, keyTab + elemCount, e); + return result != keyTab + elemCount ? result->qtkey : 0; +} + +int QLibInputKeyboard::keysymToQtKey(xkb_keysym_t keysym, Qt::KeyboardModifiers *modifiers, const QString &text) const +{ + int code = 0; +#ifndef QT_NO_TEXTCODEC + QTextCodec *systemCodec = QTextCodec::codecForLocale(); +#endif + if (keysym < 128 || (keysym < 256 +#ifndef QT_NO_TEXTCODEC + && systemCodec->mibEnum() == 4 +#endif + )) { + // upper-case key, if known + code = isprint((int)keysym) ? toupper((int)keysym) : 0; + } else if (keysym >= XKB_KEY_F1 && keysym <= XKB_KEY_F35) { + // function keys + code = Qt::Key_F1 + ((int)keysym - XKB_KEY_F1); + } else if (keysym >= XKB_KEY_KP_Space && keysym <= XKB_KEY_KP_9) { + if (keysym >= XKB_KEY_KP_0) { + // numeric keypad keys + code = Qt::Key_0 + ((int)keysym - XKB_KEY_KP_0); + } else { + code = keysymToQtKey(keysym); + } + *modifiers |= Qt::KeypadModifier; + } else if (text.length() == 1 && text.unicode()->unicode() > 0x1f + && text.unicode()->unicode() != 0x7f + && !(keysym >= XKB_KEY_dead_grave && keysym <= XKB_KEY_dead_currency)) { + code = text.unicode()->toUpper().unicode(); + } else { + // any other keys + code = keysymToQtKey(keysym); + } + return code; +} +#endif + +QT_END_NAMESPACE |