kwin/src/globalshortcuts.cpp
2022-01-25 16:56:33 +00:00

236 lines
7.7 KiB
C++

/*
KWin - the KDE window manager
This file is part of the KDE project.
SPDX-FileCopyrightText: 2013 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: GPL-2.0-or-later
*/
// own
#include "globalshortcuts.h"
// kwin
#include "gestures.h"
#include "kwinglobals.h"
#include "main.h"
#include "utils/common.h"
#include <config-kwin.h>
// KDE
#include <KGlobalAccel/private/kglobalaccel_interface.h>
#include <KGlobalAccel/private/kglobalacceld.h>
// Qt
#include <QAction>
#include <variant>
#include <signal.h>
namespace KWin
{
GlobalShortcut::GlobalShortcut(Shortcut &&sc, QAction *action)
: m_shortcut(sc)
, m_action(action)
{
static const QMap<SwipeDirection, SwipeGesture::Direction> dirs = {
{SwipeDirection::Up, SwipeGesture::Direction::Up},
{SwipeDirection::Down, SwipeGesture::Direction::Down},
{SwipeDirection::Left, SwipeGesture::Direction::Left},
{SwipeDirection::Right, SwipeGesture::Direction::Right},
};
if (auto swipeGesture = std::get_if<FourFingerSwipeShortcut>(&sc)) {
m_gesture.reset(new SwipeGesture);
m_gesture->setDirection(dirs[swipeGesture->swipeDirection]);
m_gesture->setMaximumFingerCount(4);
m_gesture->setMinimumFingerCount(4);
QObject::connect(m_gesture.get(), &SwipeGesture::triggered, m_action, &QAction::trigger, Qt::QueuedConnection);
} else if (auto rtSwipeGesture = std::get_if<FourFingerRealtimeFeedbackSwipeShortcut>(&sc)) {
m_gesture.reset(new SwipeGesture);
m_gesture->setDirection(dirs[rtSwipeGesture->swipeDirection]);
m_gesture->setMinimumDelta(QSizeF(200, 200));
m_gesture->setMaximumFingerCount(4);
m_gesture->setMinimumFingerCount(4);
QObject::connect(m_gesture.get(), &SwipeGesture::triggered, m_action, &QAction::trigger, Qt::QueuedConnection);
QObject::connect(m_gesture.get(), &SwipeGesture::cancelled, m_action, &QAction::trigger, Qt::QueuedConnection);
QObject::connect(m_gesture.get(), &SwipeGesture::progress, [cb = rtSwipeGesture->progressCallback](qreal v) {
cb(v);
});
}
}
GlobalShortcut::~GlobalShortcut()
{
}
QAction *GlobalShortcut::action() const
{
return m_action;
}
void GlobalShortcut::invoke() const
{
QMetaObject::invokeMethod(m_action, "trigger", Qt::QueuedConnection);
}
const Shortcut &GlobalShortcut::shortcut() const
{
return m_shortcut;
}
SwipeGesture *GlobalShortcut::swipeGesture() const
{
return m_gesture.get();
}
GlobalShortcutsManager::GlobalShortcutsManager(QObject *parent)
: QObject(parent)
, m_gestureRecognizer(new GestureRecognizer(this))
{
}
GlobalShortcutsManager::~GlobalShortcutsManager()
{
}
void GlobalShortcutsManager::init()
{
if (kwinApp()->shouldUseWaylandForCompositing()) {
qputenv("KGLOBALACCELD_PLATFORM", QByteArrayLiteral("org.kde.kwin"));
m_kglobalAccel = new KGlobalAccelD(this);
if (!m_kglobalAccel->init()) {
qCDebug(KWIN_CORE) << "Init of kglobalaccel failed";
delete m_kglobalAccel;
m_kglobalAccel = nullptr;
} else {
qCDebug(KWIN_CORE) << "KGlobalAcceld inited";
}
}
}
void GlobalShortcutsManager::objectDeleted(QObject *object)
{
auto it = m_shortcuts.begin();
while (it != m_shortcuts.end()) {
if (it->action() == object) {
it = m_shortcuts.erase(it);
} else {
++it;
}
}
}
bool GlobalShortcutsManager::addIfNotExists(GlobalShortcut sc)
{
for (const auto &cs : qAsConst(m_shortcuts)) {
if (sc.shortcut() == cs.shortcut()) {
return false;
}
}
if (std::holds_alternative<FourFingerSwipeShortcut>(sc.shortcut()) || std::holds_alternative<FourFingerRealtimeFeedbackSwipeShortcut>(sc.shortcut())) {
m_gestureRecognizer->registerGesture(sc.swipeGesture());
}
connect(sc.action(), &QAction::destroyed, this, &GlobalShortcutsManager::objectDeleted);
m_shortcuts.push_back(std::move(sc));
return true;
}
void GlobalShortcutsManager::registerPointerShortcut(QAction *action, Qt::KeyboardModifiers modifiers, Qt::MouseButtons pointerButtons)
{
addIfNotExists(GlobalShortcut(PointerButtonShortcut{modifiers, pointerButtons}, action));
}
void GlobalShortcutsManager::registerAxisShortcut(QAction *action, Qt::KeyboardModifiers modifiers, PointerAxisDirection axis)
{
addIfNotExists(GlobalShortcut(PointerAxisShortcut{modifiers, axis}, action));
}
void GlobalShortcutsManager::registerTouchpadSwipe(QAction *action, SwipeDirection direction)
{
addIfNotExists(GlobalShortcut(FourFingerSwipeShortcut{direction}, action));
}
void GlobalShortcutsManager::registerRealtimeTouchpadSwipe(QAction *action, std::function<void (qreal)> progressCallback, SwipeDirection direction)
{
addIfNotExists(GlobalShortcut(FourFingerRealtimeFeedbackSwipeShortcut{direction, progressCallback}, action));
}
bool GlobalShortcutsManager::processKey(Qt::KeyboardModifiers mods, int keyQt)
{
if (m_kglobalAccelInterface) {
if (!keyQt && !mods) {
return false;
}
auto check = [this](Qt::KeyboardModifiers mods, int keyQt) {
bool retVal = false;
QMetaObject::invokeMethod(m_kglobalAccelInterface,
"checkKeyPressed",
Qt::DirectConnection,
Q_RETURN_ARG(bool, retVal),
Q_ARG(int, int(mods) | keyQt));
return retVal;
};
if (check(mods, keyQt)) {
return true;
} else if (keyQt == Qt::Key_Backtab) {
// KGlobalAccel on X11 has some workaround for Backtab
// see kglobalaccel/src/runtime/plugins/xcb/kglobalccel_x11.cpp method x11KeyPress
// Apparently KKeySequenceWidget captures Shift+Tab instead of Backtab
// thus if the key is backtab we should adjust to add shift again and use tab
// in addition KWin registers the shortcut incorrectly as Alt+Shift+Backtab
// this should be changed to either Alt+Backtab or Alt+Shift+Tab to match KKeySequenceWidget
// trying the variants
if (check(mods | Qt::ShiftModifier, keyQt)) {
return true;
}
if (check(mods | Qt::ShiftModifier, Qt::Key_Tab)) {
return true;
}
}
}
return false;
}
template<typename ShortcutKind, typename... Args>
bool match(QVector<GlobalShortcut> &shortcuts, Args... args)
{
for (auto &sc : shortcuts) {
if (std::holds_alternative<ShortcutKind>(sc.shortcut())) {
if (std::get<ShortcutKind>(sc.shortcut()) == ShortcutKind{args...}) {
sc.invoke();
return true;
}
}
}
return false;
}
// TODO(C++20): use ranges for a nicer way of filtering by shortcut type
bool GlobalShortcutsManager::processPointerPressed(Qt::KeyboardModifiers mods, Qt::MouseButtons pointerButtons)
{
return match<PointerButtonShortcut>(m_shortcuts, mods, pointerButtons);
}
bool GlobalShortcutsManager::processAxis(Qt::KeyboardModifiers mods, PointerAxisDirection axis)
{
return match<PointerAxisShortcut>(m_shortcuts, mods, axis);
}
void GlobalShortcutsManager::processSwipeStart(uint fingerCount)
{
m_gestureRecognizer->startSwipeGesture(fingerCount);
}
void GlobalShortcutsManager::processSwipeUpdate(const QSizeF &delta)
{
m_gestureRecognizer->updateSwipeGesture(delta);
}
void GlobalShortcutsManager::processSwipeCancel()
{
m_gestureRecognizer->cancelSwipeGesture();
}
void GlobalShortcutsManager::processSwipeEnd()
{
m_gestureRecognizer->endSwipeGesture();
// TODO: cancel on Wayland Seat if one triggered
}
} // namespace