160 lines
4.3 KiB
C++
160 lines
4.3 KiB
C++
/*
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SPDX-FileCopyrightText: 2018 Marco Martin <mart@kde.org>
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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 "tabletmodemanager.h"
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#include "input.h"
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#include "input_event.h"
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#include "input_event_spy.h"
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#include "libinput/device.h"
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#include "libinput/connection.h"
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#include <QTimer>
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#include <QDBusConnection>
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namespace KWin
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{
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KWIN_SINGLETON_FACTORY_VARIABLE(TabletModeManager, s_manager)
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class TabletModeSwitchEventSpy : public QObject, public InputEventSpy
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{
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public:
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explicit TabletModeSwitchEventSpy(TabletModeManager *parent)
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: QObject(parent)
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, m_parent(parent)
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{
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}
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void switchEvent(SwitchEvent *event) override
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{
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if (!event->device()->isTabletModeSwitch()) {
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return;
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}
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switch (event->state()) {
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case SwitchEvent::State::Off:
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m_parent->setIsTablet(false);
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break;
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case SwitchEvent::State::On:
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m_parent->setIsTablet(true);
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break;
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default:
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Q_UNREACHABLE();
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}
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}
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private:
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TabletModeManager * const m_parent;
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};
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class TabletModeTouchpadRemovedSpy : public QObject
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{
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public:
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explicit TabletModeTouchpadRemovedSpy(TabletModeManager *parent)
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: QObject(parent)
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, m_parent(parent)
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{
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auto c = LibInput::Connection::self();
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connect(c, &LibInput::Connection::deviceAdded, this, &TabletModeTouchpadRemovedSpy::refresh);
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connect(c, &LibInput::Connection::deviceRemoved, this, &TabletModeTouchpadRemovedSpy::refresh);
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check();
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}
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void refresh(LibInput::Device* d) {
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if (!d->isTouch() && !d->isPointer())
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return;
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check();
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}
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void check() {
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if (!LibInput::Connection::self()) {
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qDebug() << "no libinput :(";
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return;
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}
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const auto devices = LibInput::Connection::self()->devices();
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const bool hasTouch = std::any_of(devices.constBegin(), devices.constEnd(), [](LibInput::Device* device){ return device->isTouch(); });
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m_parent->setTabletModeAvailable(hasTouch);
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const bool hasPointer = std::any_of(devices.constBegin(), devices.constEnd(), [](LibInput::Device* device){ return device->isPointer(); });
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m_parent->setIsTablet(hasTouch && !hasPointer);
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}
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private:
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TabletModeManager * const m_parent;
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};
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TabletModeManager::TabletModeManager(QObject *parent)
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: QObject(parent)
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{
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if (input()->hasTabletModeSwitch()) {
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input()->installInputEventSpy(new TabletModeSwitchEventSpy(this));
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} else {
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hasTabletModeInputChanged(false);
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}
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QDBusConnection::sessionBus().registerObject(QStringLiteral("/org/kde/KWin"),
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QStringLiteral("org.kde.KWin.TabletModeManager"),
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this,
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QDBusConnection::ExportAllProperties | QDBusConnection::ExportAllSignals
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);
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connect(input(), &InputRedirection::hasTabletModeSwitchChanged, this, &TabletModeManager::hasTabletModeInputChanged);
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}
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void KWin::TabletModeManager::hasTabletModeInputChanged(bool set)
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{
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if (set) {
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input()->installInputEventSpy(new TabletModeSwitchEventSpy(this));
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setTabletModeAvailable(true);
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} else {
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auto setupDetector = [this] {
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auto spy = new TabletModeTouchpadRemovedSpy(this);
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connect(input(), &InputRedirection::hasTabletModeSwitchChanged, spy, [spy](bool set){
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if (set)
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spy->deleteLater();
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});
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};
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if (LibInput::Connection::self())
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setupDetector();
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else
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QTimer::singleShot(2000, this, setupDetector);
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}
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}
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bool TabletModeManager::isTabletModeAvailable() const
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{
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return m_detecting;
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}
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bool TabletModeManager::isTablet() const
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{
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return m_isTabletMode;
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}
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void TabletModeManager::setIsTablet(bool tablet)
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{
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if (m_isTabletMode == tablet) {
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return;
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}
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m_isTabletMode = tablet;
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emit tabletModeChanged(tablet);
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}
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void KWin::TabletModeManager::setTabletModeAvailable(bool detecting)
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{
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if (m_detecting != detecting) {
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m_detecting = detecting;
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tabletModeAvailableChanged(detecting);
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}
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}
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} // namespace KWin
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