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	diff --git a/hotkeymap.h b/hotkeymap.h
	index 9f2c6c4..4a3c576 100644
	--- a/hotkeymap.h
	+++ b/hotkeymap.h
	@@ -1,271 +1,296 @@
	#include <QtCore>

	#if defined(Q_OS_WIN)
	inline size_t QtKeyToWin(Qt::Key key)
	{
	switch ((Qt::Key)key) {
	case Qt::Key_Escape:
	return VK_ESCAPE;
	case Qt::Key_Tab:
	case Qt::Key_Backtab:
	return VK_TAB;
	case Qt::Key_Backspace:
	return VK_BACK;
	case Qt::Key_Return:
	case Qt::Key_Enter:
	return VK_RETURN;
	case Qt::Key_Insert:
	return VK_INSERT;
	case Qt::Key_Delete:
	return VK_DELETE;
	case Qt::Key_Pause:
	return VK_PAUSE;
	case Qt::Key_Print:
	return VK_SNAPSHOT;
	case Qt::Key_Clear:
	return VK_CLEAR;
	case Qt::Key_Home:
	return VK_HOME;
	case Qt::Key_End:
	return VK_END;
	case Qt::Key_Left:
	return VK_LEFT;
	case Qt::Key_Up:
	return VK_UP;
	case Qt::Key_Right:
	return VK_RIGHT;
	case Qt::Key_Down:
	return VK_DOWN;
	case Qt::Key_PageUp:
	return VK_PRIOR;
	case Qt::Key_PageDown:
	return VK_NEXT;
	case Qt::Key_F1:
	return VK_F1;
	case Qt::Key_F2:
	return VK_F2;
	case Qt::Key_F3:
	return VK_F3;
	case Qt::Key_F4:
	return VK_F4;
	case Qt::Key_F5:
	return VK_F5;
	case Qt::Key_F6:
	return VK_F6;
	case Qt::Key_F7:
	return VK_F7;
	case Qt::Key_F8:
	return VK_F8;
	case Qt::Key_F9:
	return VK_F9;
	case Qt::Key_F10:
	return VK_F10;
	case Qt::Key_F11:
	return VK_F11;
	case Qt::Key_F12:
	return VK_F12;
	case Qt::Key_F13:
	return VK_F13;
	case Qt::Key_F14:
	return VK_F14;
	case Qt::Key_F15:
	return VK_F15;
	case Qt::Key_F16:
	return VK_F16;
	case Qt::Key_F17:
	return VK_F17;
	case Qt::Key_F18:
	return VK_F18;
	case Qt::Key_F19:
	return VK_F19;
	case Qt::Key_F20:
	return VK_F20;
	case Qt::Key_F21:
	return VK_F21;
	case Qt::Key_F22:
	return VK_F22;
	case Qt::Key_F23:
	return VK_F23;
	case Qt::Key_F24:
	return VK_F24;
	case Qt::Key_Space:
	return VK_SPACE;
	case Qt::Key_Asterisk:
	return VK_MULTIPLY;
	case Qt::Key_Plus:
	return VK_ADD;
	case Qt::Key_Comma:
	return VK_SEPARATOR;
	case Qt::Key_Minus:
	return VK_SUBTRACT;
	case Qt::Key_Slash:
	return VK_DIVIDE;
	case Qt::Key_MediaNext:
	return VK_MEDIA_NEXT_TRACK;
	case Qt::Key_MediaPrevious:
	return VK_MEDIA_PREV_TRACK;
	case Qt::Key_MediaPlay:
	return VK_MEDIA_PLAY_PAUSE;
	case Qt::Key_MediaStop:
	return VK_MEDIA_STOP;
	case Qt::Key_VolumeDown:
	return VK_VOLUME_DOWN;
	case Qt::Key_VolumeUp:
	return VK_VOLUME_UP;
	case Qt::Key_VolumeMute:
	return VK_VOLUME_MUTE;
	}

	if (key >= 0x01000030 && key <= 0x01000047) {
	return VK_F1 + (key - Qt::Key_F1);
	}

	return key;
	}
	#elif defined(Q_OS_LINUX)
	+
	#include "ukeysequence.h"
	+#include <unordered_map>
	#include "xcb/xcb.h"
	#include "xcb/xcb_keysyms.h"
	#include "X11/keysym.h"

	struct UKeyData {
	int key;
	int mods;
	};

	+static std::unordered_map<uint32_t, uint32_t> KEY_MAP = {
	+ {Qt::Key_Escape, XK_Escape},
	+ {Qt::Key_Tab, XK_Tab},
	+ {Qt::Key_Backspace, XK_BackSpace},
	+ {Qt::Key_Return, XK_Return},
	+ {Qt::Key_Enter, XK_Return},
	+ {Qt::Key_Insert, XK_Insert},
	+ {Qt::Key_Delete, XK_Delete},
	+ {Qt::Key_Pause, XK_Pause},
	+ {Qt::Key_Print, XK_Print},
	+ {Qt::Key_SysReq, XK_Sys_Req},
	+ {Qt::Key_Clear, XK_Clear},
	+ {Qt::Key_Home, XK_Home},
	+ {Qt::Key_End, XK_End},
	+ {Qt::Key_Left, XK_Left},
	+ {Qt::Key_Up, XK_Up},
	+ {Qt::Key_Right, XK_Right},
	+ {Qt::Key_Down, XK_Down},
	+ {Qt::Key_PageUp, XK_Page_Up},
	+ {Qt::Key_PageDown, XK_Page_Down}
	+};
	+
	inline UKeyData QtKeyToLinux(const UKeySequence &keySeq)
	{
	UKeyData data = {0, 0};

	- auto key = keySeq.GetSimpleKeys();
	+ auto key = keySeq.getSimpleKeys();
	if (key.size() > 0) {
	data.key = key[0];
	} else {
	qWarning() << "Invalid hotkey";
	return data;
	}
	-
	// Key conversion
	- // Qt's F keys need conversion
	- if (data.key >= Qt::Key_F1 && data.key <= Qt::Key_F35) {
	+ // Misc Keys
	+ if (KEY_MAP.find(key[0]) != KEY_MAP.end()) {
	+ data.key = KEY_MAP[key[0]];
	+ } else if (data.key >= Qt::Key_F1 && data.key <= Qt::Key_F35) { // Qt's F keys need conversion
	const size_t DIFF = Qt::Key_F1 - XK_F1;
	data.key -= DIFF;
	} else if (data.key >= Qt::Key_Space && data.key <= Qt::Key_QuoteLeft) {
	// conversion is not necessary, if the value in the range Qt::Key_Space - Qt::Key_QuoteLeft
	} else {
	qWarning() << "Invalid hotkey: key conversion is not defined";
	return data;
	}

	// Modifiers conversion
	- auto mods = keySeq.GetModifiers();
	+ auto mods = keySeq.getModifiers();

	for (auto i : mods) {
	if (i == Qt::Key_Shift)
	data.mods \|= XCB_MOD_MASK_SHIFT;
	else if (i == Qt::Key_Control)
	data.mods \|= XCB_MOD_MASK_CONTROL;
	else if (i == Qt::Key_Alt)
	data.mods \|= XCB_MOD_MASK_1;
	else if (i == Qt::Key_Meta)
	data.mods \|= XCB_MOD_MASK_4; // !
	}

	return data;
	}
	#elif defined(Q_OS_MAC)

	#include "ukeysequence.h"
	#include <Carbon/Carbon.h>
	#include <unordered_map>

	struct UKeyData {
	uint32_t key;
	uint32_t mods;
	};

	static std::unordered_map<uint32_t, uint32_t> KEY_MAP = {
	{Qt::Key_A, kVK_ANSI_A},
	{Qt::Key_B, kVK_ANSI_B},
	{Qt::Key_C, kVK_ANSI_C},
	{Qt::Key_D, kVK_ANSI_D},
	{Qt::Key_E, kVK_ANSI_E},
	{Qt::Key_F, kVK_ANSI_F},
	{Qt::Key_G, kVK_ANSI_G},
	{Qt::Key_H, kVK_ANSI_H},
	{Qt::Key_I, kVK_ANSI_I},
	{Qt::Key_J, kVK_ANSI_J},
	{Qt::Key_K, kVK_ANSI_K},
	{Qt::Key_L, kVK_ANSI_L},
	{Qt::Key_M, kVK_ANSI_M},
	{Qt::Key_N, kVK_ANSI_N},
	{Qt::Key_O, kVK_ANSI_O},
	{Qt::Key_P, kVK_ANSI_P},
	{Qt::Key_Q, kVK_ANSI_Q},
	{Qt::Key_R, kVK_ANSI_R},
	{Qt::Key_S, kVK_ANSI_S},
	{Qt::Key_T, kVK_ANSI_T},
	{Qt::Key_U, kVK_ANSI_U},
	{Qt::Key_V, kVK_ANSI_V},
	{Qt::Key_W, kVK_ANSI_W},
	{Qt::Key_X, kVK_ANSI_X},
	{Qt::Key_Y, kVK_ANSI_Y},
	{Qt::Key_Z, kVK_ANSI_Z},
	{Qt::Key_0, kVK_ANSI_0},
	{Qt::Key_1, kVK_ANSI_1},
	{Qt::Key_2, kVK_ANSI_2},
	{Qt::Key_3, kVK_ANSI_3},
	{Qt::Key_4, kVK_ANSI_4},
	{Qt::Key_5, kVK_ANSI_5},
	{Qt::Key_6, kVK_ANSI_6},
	{Qt::Key_7, kVK_ANSI_7},
	{Qt::Key_8, kVK_ANSI_8},
	{Qt::Key_9, kVK_ANSI_9},
	{Qt::Key_F1, kVK_F1},
	{Qt::Key_F2, kVK_F2},
	{Qt::Key_F3, kVK_F3},
	{Qt::Key_F4, kVK_F4},
	{Qt::Key_F5, kVK_F5},
	{Qt::Key_F6, kVK_F6},
	{Qt::Key_F7, kVK_F7},
	{Qt::Key_F8, kVK_F8},
	{Qt::Key_F9, kVK_F9},
	{Qt::Key_F10, kVK_F10},
	{Qt::Key_F11, kVK_F11},
	{Qt::Key_F12, kVK_F12},
	{Qt::Key_F13, kVK_F13},
	{Qt::Key_F14, kVK_F14},
	{Qt::Key_Print, kVK_F14},
	};

	static std::unordered_map<uint32_t, uint32_t> MOD_MAP = {
	{Qt::Key_Shift, shiftKey},
	{Qt::Key_Alt, optionKey},
	{Qt::Key_Control, controlKey},
	{Qt::Key_Option, optionKey},
	{Qt::Key_Meta, cmdKey},
	};

	inline UKeyData QtKeyToMac(const UKeySequence &keySeq)
	{
	UKeyData data = {0, 0};
	auto key = keySeq.GetSimpleKeys();
	auto mods = keySeq.GetModifiers();

	if (key.size() == 1 && KEY_MAP.find(key[0]) != KEY_MAP.end()) {
	data.key = KEY_MAP[key[0]];
	} else {
	qWarning() << "Invalid hotkey";
	return data;
	}

	for (auto && mod : mods) {
	if (MOD_MAP.find(mod) == MOD_MAP.end())
	return data;

	data.mods += MOD_MAP[mod];
	}
	return data;
	}

	#endif
	diff --git a/uglobalhotkeys.cpp b/uglobalhotkeys.cpp
	index b2faf46..789fa40 100644
	--- a/uglobalhotkeys.cpp
	+++ b/uglobalhotkeys.cpp
	@@ -1,224 +1,231 @@
	#include <QtCore>
	#if defined(Q_OS_WIN)
	#include <windows.h>
	#elif defined(Q_OS_LINUX)
	#include <QWindow>
	#include <qpa/qplatformnativeinterface.h>
	#include <QApplication>
	#endif

	#include "hotkeymap.h"
	#include "uglobalhotkeys.h"

	+#include <QDebug>
	+
	UGlobalHotkeys::UGlobalHotkeys(QWidget *parent)
	: QWidget(parent)
	{
	#if defined(Q_OS_LINUX)
	qApp->installNativeEventFilter(this);
	QWindow wndw;
	void *v = qApp->platformNativeInterface()->nativeResourceForWindow("connection", &wndw);
	X11Connection = (xcb_connection_t *)v;
	X11Wid = xcb_setup_roots_iterator(xcb_get_setup(X11Connection)).data->root;
	X11KeySymbs = xcb_key_symbols_alloc(X11Connection);
	#endif
	}

	bool UGlobalHotkeys::registerHotkey(const QString &keySeq, size_t id)
	{
	return registerHotkey(UKeySequence(keySeq), id);
	}

	#if defined(Q_OS_MAC)
	OSStatus macHotkeyHandler(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData)
	{
	Q_UNUSED(nextHandler);
	EventHotKeyID hkCom;
	GetEventParameter(theEvent, kEventParamDirectObject, typeEventHotKeyID, NULL,
	sizeof(hkCom), NULL, &hkCom);
	size_t id = hkCom.id;

	UGlobalHotkeys caller = (UGlobalHotkeys )userData;
	caller->onHotkeyPressed(id);
	return noErr;
	}
	#endif

	bool UGlobalHotkeys::registerHotkey(const UKeySequence &keySeq, size_t id)
	{
	if (keySeq.size() == 0) {
	return false;
	}
	#if defined(Q_OS_WIN) \|\| defined(Q_OS_LINUX)
	if (Registered.find(id) != Registered.end()) {
	unregisterHotkey(id);
	}
	#endif
	#if defined(Q_OS_WIN)
	size_t winMod = 0;
	size_t key = VK_F2;

	for (size_t i = 0; i != keySeq.size(); i++) {
	if (keySeq[i] == Qt::Key_Control) {
	winMod \|= MOD_CONTROL;
	} else if (keySeq[i] == Qt::Key_Alt) {
	winMod \|= MOD_ALT;
	} else if (keySeq[i] == Qt::Key_Shift) {
	winMod \|= MOD_SHIFT;
	} else if (keySeq[i] == Qt::Key_Meta) {
	winMod \|= MOD_WIN;
	} else {
	key = QtKeyToWin(keySeq[i]);
	}
	}

	if (!RegisterHotKey((HWND)winId(), id, winMod, key)) {
	return false;
	} else {
	Registered.insert(id);
	}
	#elif defined(Q_OS_LINUX)
	regLinuxHotkey(keySeq, id);
	#endif
	#if defined(Q_OS_MAC)
	unregisterHotkey(id);

	EventHotKeyRef gMyHotKeyRef;
	EventHotKeyID gMyHotKeyID;
	EventTypeSpec eventType;
	eventType.eventClass = kEventClassKeyboard;
	eventType.eventKind = kEventHotKeyPressed;

	InstallApplicationEventHandler(&macHotkeyHandler, 1, &eventType, this, NULL);

	gMyHotKeyID.signature = uint32_t(id);
	gMyHotKeyID.id = uint32_t(id);

	UKeyData macKey = QtKeyToMac(keySeq);

	RegisterEventHotKey(macKey.key, macKey.mods, gMyHotKeyID,
	GetApplicationEventTarget(), 0, &gMyHotKeyRef);

	HotkeyRefs[id] = gMyHotKeyRef;
	#endif

	return true;
	}

	void UGlobalHotkeys::unregisterHotkey(size_t id)
	{
	#if defined(Q_OS_WIN) \|\| defined(Q_OS_LINUX)
	Q_ASSERT(Registered.find(id) != Registered.end() && "Unregistered hotkey");
	#endif
	#if defined(Q_OS_WIN)
	UnregisterHotKey((HWND)winId(), id);
	#elif defined(Q_OS_LINUX)
	unregLinuxHotkey(id);
	#endif
	#if defined(Q_OS_WIN) \|\| defined(Q_OS_LINUX)
	Registered.remove(id);
	#endif
	#if defined(Q_OS_MAC)
	if (HotkeyRefs.find(id) != HotkeyRefs.end()) {
	UnregisterEventHotKey(HotkeyRefs[id]);
	}
	#endif
	}

	void UGlobalHotkeys::unregisterAllHotkeys()
	{
	#ifdef Q_OS_WIN
	foreach (const size_t id, Registered) {
	this->unregisterHotkey(id);
	}
	#elif defined(Q_OS_LINUX)
	foreach (const size_t id, Registered.keys()) {
	this->unregisterHotkey(id);
	}
	#endif
	}

	UGlobalHotkeys::~UGlobalHotkeys()
	{
	#if defined(Q_OS_WIN)
	for (QSet<size_t>::iterator i = Registered.begin(); i != Registered.end(); ++i) {
	UnregisterHotKey((HWND)winId(), *i);
	}
	#elif defined(Q_OS_LINUX)
	xcb_key_symbols_free(X11KeySymbs);
	#endif
	}

	#if defined(Q_OS_MAC)
	void UGlobalHotkeys::onHotkeyPressed(size_t id)
	{
	emit activated(id);
	}
	#endif

	#if defined(Q_OS_WIN)
	bool UGlobalHotkeys::winEvent(MSG message, long result)
	{
	Q_UNUSED(result);
	if (message->message == WM_HOTKEY) {
	size_t id = message->wParam;
	Q_ASSERT(Registered.find(id) != Registered.end() && "Unregistered hotkey");
	emit activated(id);
	}
	return false;
	}

	bool UGlobalHotkeys::nativeEvent(const QByteArray &eventType,
	void message, long result)
	{
	Q_UNUSED(eventType);
	return winEvent((MSG *)message, result);
	}

	#elif defined(Q_OS_LINUX)

	bool UGlobalHotkeys::nativeEventFilter(const QByteArray &eventType, void message, long result)
	{
	Q_UNUSED(eventType);
	Q_UNUSED(result);
	return linuxEvent(static_cast<xcb_generic_event_t *>(message));
	}

	bool UGlobalHotkeys::linuxEvent(xcb_generic_event_t *message)
	{
	if ((message->response_type & ~0x80) == XCB_KEY_PRESS) {
	xcb_key_press_event_t ev = (xcb_key_press_event_t )message;
	auto ind = Registered.key({ev->detail, (ev->state & ~XCB_MOD_MASK_2)});

	if (ind == 0) // this is not hotkeys
	return false;

	emit activated(ind);
	return true;
	}
	return false;
	}

	void UGlobalHotkeys::regLinuxHotkey(const UKeySequence &keySeq, size_t id)
	{
	UHotkeyData data;
	UKeyData keyData = QtKeyToLinux(keySeq);
	-
	+
	xcb_keycode_t *keyC = xcb_key_symbols_get_keycode(X11KeySymbs, keyData.key);

	+ if (keyC == XCB_NO_SYMBOL) { // 0x0
	+ qWarning() << "Cannot find symbol";
	+ return;
	+ }
	+
	data.keyCode = *keyC;
	data.mods = keyData.mods;

	xcb_grab_key(X11Connection, 1, X11Wid, data.mods, data.keyCode, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);
	// NumLk
	xcb_grab_key(X11Connection, 1, X11Wid, data.mods \| XCB_MOD_MASK_2, data.keyCode, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC);

	Registered.insert(id, data);
	}

	void UGlobalHotkeys::unregLinuxHotkey(size_t id)
	{
	UHotkeyData data = Registered.take(id);
	xcb_ungrab_key(X11Connection, data.keyCode, X11Wid, data.mods);
	xcb_ungrab_key(X11Connection, data.keyCode, X11Wid, data.mods \| XCB_MOD_MASK_2);
	}
	#endif

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