209 lines
7.5 KiB
C++
209 lines
7.5 KiB
C++
/**
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* SPDX-FileCopyrightText: 2018 Albert Vaca Cintora <albertvaka@gmail.com>
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* SPDX-FileCopyrightText: 2014 Ahmed I. Khalil <ahmedibrahimkhali@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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*/
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#include "x11remoteinput.h"
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#include <QX11Info>
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#include <QCursor>
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#include <QDebug>
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#include <X11/extensions/XTest.h>
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#include <X11/keysym.h>
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#include <fakekey/fakekey.h>
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enum MouseButtons {
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LeftMouseButton = 1,
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MiddleMouseButton = 2,
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RightMouseButton = 3,
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MouseWheelUp = 4,
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MouseWheelDown = 5
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};
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//Translation table to keep in sync within all the implementations
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int SpecialKeysMap[] = {
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0, // Invalid
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XK_BackSpace, // 1
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XK_Tab, // 2
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XK_Linefeed, // 3
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XK_Left, // 4
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XK_Up, // 5
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XK_Right, // 6
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XK_Down, // 7
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XK_Page_Up, // 8
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XK_Page_Down, // 9
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XK_Home, // 10
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XK_End, // 11
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XK_Return, // 12
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XK_Delete, // 13
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XK_Escape, // 14
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XK_Sys_Req, // 15
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XK_Scroll_Lock, // 16
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0, // 17
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0, // 18
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0, // 19
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0, // 20
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XK_F1, // 21
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XK_F2, // 22
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XK_F3, // 23
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XK_F4, // 24
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XK_F5, // 25
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XK_F6, // 26
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XK_F7, // 27
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XK_F8, // 28
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XK_F9, // 29
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XK_F10, // 30
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XK_F11, // 31
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XK_F12, // 32
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};
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template <typename T, size_t N>
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size_t arraySize(T(&arr)[N]) { (void)arr; return N; }
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X11RemoteInput::X11RemoteInput(QObject* parent)
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: AbstractRemoteInput(parent)
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, m_fakekey(nullptr)
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{
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}
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X11RemoteInput::~X11RemoteInput()
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{
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if (m_fakekey) {
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free(m_fakekey);
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m_fakekey = nullptr;
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}
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}
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bool isLeftHanded(Display * display)
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{
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unsigned char map[20];
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int num_buttons = XGetPointerMapping(display, map, 20);
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if( num_buttons == 1 ) {
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return false;
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} else if( num_buttons == 2 ) {
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return ( (int)map[0] == 2 && (int)map[1] == 1 );
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} else {
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return ( (int)map[0] == 3 && (int)map[2] == 1 );
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}
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}
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bool X11RemoteInput::handlePacket(const NetworkPacket& np)
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{
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float dx = np.get<float>(QStringLiteral("dx"), 0);
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float dy = np.get<float>(QStringLiteral("dy"), 0);
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bool isSingleClick = np.get<bool>(QStringLiteral("singleclick"), false);
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bool isDoubleClick = np.get<bool>(QStringLiteral("doubleclick"), false);
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bool isMiddleClick = np.get<bool>(QStringLiteral("middleclick"), false);
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bool isRightClick = np.get<bool>(QStringLiteral("rightclick"), false);
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bool isSingleHold = np.get<bool>(QStringLiteral("singlehold"), false);
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bool isSingleRelease = np.get<bool>(QStringLiteral("singlerelease"), false);
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bool isScroll = np.get<bool>(QStringLiteral("scroll"), false);
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QString key = np.get<QString>(QStringLiteral("key"), QLatin1String(""));
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int specialKey = np.get<int>(QStringLiteral("specialKey"), 0);
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if (isSingleClick || isDoubleClick || isMiddleClick || isRightClick || isSingleHold || isSingleRelease || isScroll || !key.isEmpty() || specialKey) {
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Display* display = QX11Info::display();
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if(!display) {
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return false;
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}
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bool leftHanded = isLeftHanded(display);
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int mainMouseButton = leftHanded? RightMouseButton : LeftMouseButton;
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int secondaryMouseButton = leftHanded? LeftMouseButton : RightMouseButton;
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if (isSingleClick) {
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XTestFakeButtonEvent(display, mainMouseButton, True, 0);
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XTestFakeButtonEvent(display, mainMouseButton, False, 0);
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} else if (isDoubleClick) {
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XTestFakeButtonEvent(display, mainMouseButton, True, 0);
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XTestFakeButtonEvent(display, mainMouseButton, False, 0);
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XTestFakeButtonEvent(display, mainMouseButton, True, 0);
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XTestFakeButtonEvent(display, mainMouseButton, False, 0);
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} else if (isMiddleClick) {
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XTestFakeButtonEvent(display, MiddleMouseButton, True, 0);
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XTestFakeButtonEvent(display, MiddleMouseButton, False, 0);
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} else if (isRightClick) {
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XTestFakeButtonEvent(display, secondaryMouseButton, True, 0);
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XTestFakeButtonEvent(display, secondaryMouseButton, False, 0);
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} else if (isSingleHold){
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//For drag'n drop
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XTestFakeButtonEvent(display, mainMouseButton, True, 0);
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} else if (isSingleRelease){
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//For drag'n drop. NEVER USED (release is done by tapping, which actually triggers a isSingleClick). Kept here for future-proofness.
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XTestFakeButtonEvent(display, mainMouseButton, False, 0);
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} else if (isScroll) {
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if (dy < 0) {
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XTestFakeButtonEvent(display, MouseWheelDown, True, 0);
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XTestFakeButtonEvent(display, MouseWheelDown, False, 0);
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} else if (dy > 0) {
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XTestFakeButtonEvent(display, MouseWheelUp, True, 0);
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XTestFakeButtonEvent(display, MouseWheelUp, False, 0);
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}
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} else if (!key.isEmpty() || specialKey) {
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bool ctrl = np.get<bool>(QStringLiteral("ctrl"), false);
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bool alt = np.get<bool>(QStringLiteral("alt"), false);
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bool shift = np.get<bool>(QStringLiteral("shift"), false);
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bool super = np.get<bool>(QStringLiteral("super"), false);
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if (ctrl) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Control_L), True, 0);
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if (alt) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Alt_L), True, 0);
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if (shift) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Shift_L), True, 0);
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if (super) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Super_L), True, 0);
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if (specialKey)
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{
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if (specialKey >= (int)arraySize(SpecialKeysMap)) {
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qWarning() << "Unsupported special key identifier";
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return false;
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}
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int keycode = XKeysymToKeycode(display, SpecialKeysMap[specialKey]);
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XTestFakeKeyEvent (display, keycode, True, 0);
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XTestFakeKeyEvent (display, keycode, False, 0);
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} else {
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if (!m_fakekey) {
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m_fakekey = fakekey_init(display);
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if (!m_fakekey) {
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qWarning() << "Failed to initialize libfakekey";
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return false;
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}
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}
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//We use fakekey here instead of XTest (above) because it can handle utf characters instead of keycodes.
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for (int i=0;i<key.length();i++) {
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QByteArray utf8 = QString(key.at(i)).toUtf8();
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fakekey_press(m_fakekey, (const uchar*)utf8.constData(), utf8.size(), 0);
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fakekey_release(m_fakekey);
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}
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}
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if (ctrl) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Control_L), False, 0);
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if (alt) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Alt_L), False, 0);
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if (shift) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Shift_L), False, 0);
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if (super) XTestFakeKeyEvent (display, XKeysymToKeycode(display, XK_Super_L), False, 0);
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}
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XFlush(display);
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} else { //Is a mouse move event
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QPoint point = QCursor::pos();
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QCursor::setPos(point.x() + (int)dx, point.y() + (int)dy);
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}
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return true;
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}
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bool X11RemoteInput::hasKeyboardSupport()
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{
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return true;
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}
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