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/*
SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>
SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include <QGuiApplication>
#include <QQuickItem>
#include <QQuickView>
#include <KWayland/Client/connection_thread.h>
#include <KWayland/Client/pointer.h>
#include <KWayland/Client/pointergestures.h>
#include <KWayland/Client/registry.h>
#include <KWayland/Client/seat.h>
using namespace KWayland::Client;
class PinchGesture : public QQuickItem
{
Q_OBJECT
Q_PROPERTY(qreal scale READ scale NOTIFY scaleChanged)
Q_PROPERTY(qreal progressScale READ progressScale NOTIFY progressScaleChanged)
public:
explicit PinchGesture(QQuickItem *parent = nullptr);
~PinchGesture() override;
qreal scale() const
{
return m_scale;
}
qreal progressScale() const
{
return m_progressScale;
}
protected:
void componentComplete() override;
Q_SIGNALS:
void progressScaleChanged();
private:
void initWayland();
void setupGesture();
Pointer *m_pointer = nullptr;
PointerGestures *m_pointerGestures = nullptr;
PointerPinchGesture *m_gesture = nullptr;
qreal m_scale = 1.0;
qreal m_progressScale = 1.0;
};
PinchGesture::PinchGesture(QQuickItem *parent)
: QQuickItem(parent)
{
}
PinchGesture::~PinchGesture() = default;
void PinchGesture::componentComplete()
{
QQuickItem::componentComplete();
initWayland();
}
void PinchGesture::initWayland()
{
auto c = ConnectionThread::fromApplication(this);
Registry *r = new Registry(c);
r->create(c);
connect(r, &Registry::interfacesAnnounced, this,
[this, r] {
const auto gi = r->interface(Registry::Interface::PointerGesturesUnstableV1);
if (gi.name == 0) {
return;
}
m_pointerGestures = r->createPointerGestures(gi.name, gi.version, this);
// now create seat
const auto si = r->interface(Registry::Interface::Seat);
if (si.name == 0) {
return;
}
auto seat = r->createSeat(si.name, si.version, this);
connect(seat, &Seat::hasKeyboardChanged, this,
[this, seat](bool hasPointer) {
if (hasPointer) {
m_pointer = seat->createPointer(this);
setupGesture();
} else {
delete m_pointer;
delete m_gesture;
m_pointer = nullptr;
m_gesture = nullptr;
}
});
});
r->setup();
c->roundtrip();
}
void PinchGesture::setupGesture()
{
if (m_gesture || !m_pointerGestures || !m_pointer) {
return;
}
m_gesture = m_pointerGestures->createPinchGesture(m_pointer, this);
connect(m_gesture, &PointerPinchGesture::updated, this,
[this](const QSizeF &delta, qreal scale) {
m_progressScale = scale;
Q_EMIT progressScaleChanged();
});
connect(m_gesture, &PointerPinchGesture::ended, this,
[this] {
m_scale = m_scale * m_progressScale;
m_progressScale = 1.0;
Q_EMIT scaleChanged();
Q_EMIT progressScaleChanged();
});
connect(m_gesture, &PointerPinchGesture::cancelled, this,
[this] {
m_progressScale = 1.0;
Q_EMIT progressScaleChanged();
});
}
int main(int argc, char *argv[])
{
qputenv("QT_QPA_PLATFORM", QByteArrayLiteral("wayland"));
QGuiApplication app(argc, argv);
qmlRegisterType<PinchGesture>("org.kde.kwin.tests", 1, 0, "PinchGesture");
QQuickView view;
view.setSource(QUrl::fromLocalFile(QStringLiteral(DIR) + QStringLiteral("/pointergesturestest.qml")));
view.show();
return app.exec();
}
#include "pointergesturestest.moc"
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