mirror of https://github.com/cutefishos/core
				
				
				
			Refactored shortcut keys
							parent
							
								
									e0e4c8cddf
								
							
						
					
					
						commit
						e673312be8
					
				@ -0,0 +1,301 @@
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/*
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 * Copyright (C) 2021 CutefishOS Team.
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 *
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 * Author:     Reion Wong <aj@cutefishos.com>
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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 * any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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		||||
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#include "hotkeys.h"
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#include <QApplication>
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#include <QKeySequence>
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#include <QX11Info>
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#include <QTimer>
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#include <QDebug>
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// #include <KKeyServer>
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// #include <NETWM>
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// XCB & X11
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#include <xcb/xcb_keysyms.h>
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#include <X11/XKBlib.h>
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Hotkeys::Hotkeys(QObject *parent)
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    : QObject(parent)
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{
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    qApp->installNativeEventFilter(this);
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}
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Hotkeys::~Hotkeys()
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{
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    qApp->removeNativeEventFilter(this);
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}
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bool Hotkeys::nativeEventFilter(const QByteArray &eventType, void *message, long *result)
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{
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    Q_UNUSED(result);
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    if (eventType != "xcb_generic_event_t") {
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        return false;
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    }
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    xcb_generic_event_t *e = static_cast<xcb_generic_event_t *>(message);
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    if (e->response_type == XCB_KEY_PRESS) {
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        xcb_key_press_event_t *keyEvent = static_cast<xcb_key_press_event_t *>(message);
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        quint32 keycode = keyEvent->detail;
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        quint32 mods = keyEvent->state; // & (ShiftMask | ControlMask | Mod1Mask | Mod3Mask);
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        quint32 id = keycode | mods;
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//        int keyQt;
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//        KKeyServer::xcbKeyPressEventToQt(keyEvent, &keyQt);
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//        bool found = false;
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//        for (QKeySequence &seq : m_shortcuts.values()) {
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//            if (seq == QKeySequence(keyQt)) {
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//                found = true;
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//                // emit pressed(seq);
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//                break;
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//            }
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//        }
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//        if (!found && m_shortcuts.contains(id)) {
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//            // emit pressed(m_shortcuts[id]);
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//        }
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//        // Keyboard needs to be ungrabed after XGrabKey() activates the grab,
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//        // otherwise it becomes frozen.
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//        xcb_connection_t *c = QX11Info::connection();
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//        xcb_void_cookie_t cookie = xcb_ungrab_keyboard_checked(c, XCB_TIME_CURRENT_TIME);
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//        xcb_flush(c);
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//        // xcb_flush() only makes sure that the ungrab keyboard request has been
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//        // sent, but is not enough to make sure that request has been fulfilled. Use
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//        // xcb_request_check() to make sure that the request has been processed.
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//        xcb_request_check(c, cookie);
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//        int keyQt;
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//        if (!KKeyServer::xcbKeyPressEventToQt(keyEvent, &keyQt)) {
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//            qDebug() << "KKeyServer::xcbKeyPressEventToQt failed";
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//            return false;
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//        }
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//        // All that work for this hey... argh...
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//        if (NET::timestampCompare(keyEvent->time, QX11Info::appTime()) > 0) {
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//            QX11Info::setAppTime(keyEvent->time);
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//        }
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//        bool found = false;
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//        for (QKeySequence &seq : m_shortcuts.values()) {
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//            if (seq == QKeySequence(keyQt)) {
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//                found = true;
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//                emit pressed(seq);
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//                break;
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//            }
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//        }
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        if (m_shortcuts.contains(id)) {
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            emit pressed(m_shortcuts[id]);
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        }
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        return true;
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    } else if (e->response_type == XCB_KEY_RELEASE) {
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        xcb_key_release_event_t *keyEvent = static_cast<xcb_key_release_event_t *>(message);
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        quint32 keycode = keyEvent->detail;
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        quint32 mods = keyEvent->state; // & (ShiftMask | ControlMask | Mod1Mask | Mod3Mask);
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        quint32 id = keycode | mods;
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        // META
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        if (id == 197) {
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            id = 133;
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        }
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        if (m_shortcuts.contains(id)) {
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            emit released(m_shortcuts[id]);
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        }
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        return true;
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    }
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    return false;
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}
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void Hotkeys::registerKey(QKeySequence keySequence)
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{
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    if (keySequence.isEmpty())
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        return;
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    quint32 keycode = nativeKeycode(getKey(keySequence));
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    quint32 mods = nativeModifiers(getMods(keySequence));
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    quint32 keyId = keycode | mods;
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    // META
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    if (keycode == 204 && mods == 0) {
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        keycode = 133;
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        keyId = keycode | mods;
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    }
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    if (!m_shortcuts.contains(keyId)) {
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        registerKey(keycode, mods);
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        m_shortcuts.insert(keyId, keySequence);
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    }
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}
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void Hotkeys::registerKey(quint32 keycode)
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{
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    if (!m_shortcuts.contains(keycode)) {
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        registerKey(keycode, 0);
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        m_shortcuts.insert(keycode, QKeySequence(keycode | 0));
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    }
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}
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void Hotkeys::registerKey(quint32 key, quint32 mods)
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{
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    xcb_grab_key(QX11Info::connection(),
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                 1,
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                 QX11Info::appRootWindow(),
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                 mods,
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                 key,
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                 XCB_GRAB_MODE_ASYNC,
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                 XCB_GRAB_MODE_ASYNC);
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    xcb_grab_key(QX11Info::connection(),
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                 1,
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                 QX11Info::appRootWindow(),
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                 mods | XCB_MOD_MASK_2,
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                 key,
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                 XCB_GRAB_MODE_ASYNC,
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                 XCB_GRAB_MODE_ASYNC);
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}
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void Hotkeys::unregisterKey(quint32 key, quint32 mods)
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{
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    xcb_ungrab_key(QX11Info::connection(), key, QX11Info::appRootWindow(), mods);
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}
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quint32 Hotkeys::nativeKeycode(Qt::Key k)
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{
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    /* keysymdef.h */
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    quint32 key = 0;
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    if (k >= Qt::Key_F1 && k <= Qt::Key_F35) {
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        key = XK_F1 + (k - Qt::Key_F1);
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    } else if (k >= Qt::Key_Space && k <= Qt::Key_QuoteLeft) {
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        key = k;
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    } else if (k >= Qt::Key_BraceLeft && k <= Qt::Key_AsciiTilde) {
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        key = k;
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    } else if (k >= Qt::Key_nobreakspace && k <= Qt::Key_ydiaeresis) {
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        key = k;
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    } else {
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        switch (k) {
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        case Qt::Key_Escape:
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            key = XK_Escape;
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            break;
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        case Qt::Key_Tab:
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        case Qt::Key_Backtab:
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            key = XK_Tab;
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            break;
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        case Qt::Key_Backspace:
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            key = XK_BackSpace;
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            break;
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        case Qt::Key_Return:
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        case Qt::Key_Enter:
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            key = XK_Return;
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            break;
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        case Qt::Key_Insert:
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            key = XK_Insert;
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            break;
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        case Qt::Key_Delete:
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            key = XK_Delete;
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            break;
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        case Qt::Key_Pause:
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            key = XK_Pause;
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            break;
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        case Qt::Key_Print:
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            key = XK_Print;
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            break;
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        case Qt::Key_SysReq:
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            key = XK_Sys_Req;
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            break;
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        case Qt::Key_Clear:
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            key = XK_Clear;
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            break;
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        case Qt::Key_Home:
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            key = XK_Home;
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            break;
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        case Qt::Key_End:
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            key = XK_End;
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            break;
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        case Qt::Key_Left:
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            key = XK_Left;
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            break;
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        case Qt::Key_Up:
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            key = XK_Up;
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            break;
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        case Qt::Key_Right:
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            key = XK_Right;
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            break;
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        case Qt::Key_Down:
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            key = XK_Down;
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            break;
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        case Qt::Key_PageUp:
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            key = XK_Page_Up;
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            break;
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        case Qt::Key_PageDown:
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            key = XK_Page_Down;
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            break;
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        default:
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            key = 0;
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        }
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    }
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    return XKeysymToKeycode(QX11Info::display(), key);
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}
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quint32 Hotkeys::nativeModifiers(Qt::KeyboardModifiers m)
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{
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    quint32 mods = Qt::NoModifier;
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    if (m & Qt::ShiftModifier)
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        mods |= ShiftMask;
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    if (m & Qt::ControlModifier)
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        mods |= ControlMask;
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    if (m & Qt::AltModifier)
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        mods |= Mod1Mask;
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    if (m & Qt::MetaModifier)
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        mods |= Mod4Mask;
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    return mods;
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}
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Qt::Key Hotkeys::getKey(const QKeySequence &keyseq)
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{
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    if (keyseq.isEmpty()) {
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        return Qt::Key(0);
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    }
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    return Qt::Key(keyseq[0] & ~Qt::KeyboardModifierMask);
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}
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Qt::KeyboardModifiers Hotkeys::getMods(const QKeySequence &keyseq)
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{
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    if (keyseq.isEmpty()) {
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        return Qt::KeyboardModifiers();
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    }
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    return Qt::KeyboardModifiers(keyseq[0] & Qt::KeyboardModifierMask);
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}
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@ -0,0 +1,63 @@
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/*
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 * Copyright (C) 2021 CutefishOS Team.
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 *
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 * Author:     Reion Wong <aj@cutefishos.com>
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 *
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 * This program is free software: you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation, either version 3 of the License, or
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		||||
 * any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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		||||
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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		||||
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 | 
			
		||||
 * GNU General Public License for more details.
 | 
			
		||||
 *
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 * You should have received a copy of the GNU General Public License
 | 
			
		||||
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef HOTKEYS_H
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#define HOTKEYS_H
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#include <QObject>
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#include <QKeySequence>
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#include <QAbstractNativeEventFilter>
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#include <QHash>
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#include <QTimer>
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#include <QSet>
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#include <xcb/xcb.h>
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class Hotkeys : public QObject, public QAbstractNativeEventFilter
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{
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    Q_OBJECT
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public:
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    explicit Hotkeys(QObject *parent = nullptr);
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    ~Hotkeys();
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    bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override;
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    void registerKey(QKeySequence keySequence);
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    void registerKey(quint32 keycode);
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    void registerKey(quint32 key, quint32 mods);
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    void unregisterKey(quint32 key, quint32 mods);
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signals:
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    void pressed(QKeySequence keySeq);
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    void released(QKeySequence keySeq);
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private:
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    quint32 nativeKeycode(Qt::Key k);
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    quint32 nativeModifiers(Qt::KeyboardModifiers m);
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    Qt::Key getKey(const QKeySequence& keyseq);
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    Qt::KeyboardModifiers getMods(const QKeySequence& keyseq);
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private:
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    QHash<quint32, QKeySequence> m_shortcuts;
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};
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#endif // HOTKEYS_H
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