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/*
This file is part of the KDE project
SPDX-FileCopyrightText: 2021 Steffen Hartleib <steffenhartleib@t-online.de>
SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "ktwofingertap_test.h"
#include <QApplication>
#include <QVBoxLayout>
#include <QCheckBox>
#include <QLineEdit>
#include <QLabel>
#include <QDebug>
#include <QTouchEvent>
#include <QSpinBox>
#include <ktwofingertap.h>
MainWindow::MainWindow()
: QMainWindow()
{
mWidget = new QWidget(this);
setCentralWidget(mWidget);
QVBoxLayout *vLayout = new QVBoxLayout (mWidget);
QLabel *msgLabel = new QLabel(QStringLiteral("Make a two finger tap gesture in this window."), mWidget);
msgLabel->setAlignment(Qt::AlignHCenter);
mGStarted = new QCheckBox(QStringLiteral("gesture started"), mWidget);
mGStarted->setEnabled(false);
mGUpdated = new QCheckBox(QStringLiteral("gesture updated"), mWidget);
mGUpdated->setEnabled(false);
mGCanceled = new QCheckBox(QStringLiteral("gesture canceled"), mWidget);
mGCanceled->setEnabled(false);
mGFinished = new QCheckBox(QStringLiteral("gesture finished"), mWidget);
mGFinished->setEnabled(false);
mGPos = new QLineEdit(mWidget);
mGPos->setReadOnly(true);
QLabel *radiusLabel = new QLabel(QStringLiteral("current tapRadius:"), mWidget);
QSizePolicy sizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
radiusLabel->setSizePolicy(sizePolicy);
mGTapRadius = new QSpinBox(mWidget);
mGTapRadius->setMaximum(1000);
vLayout->addWidget(msgLabel);
vLayout->addWidget(mGStarted);
vLayout->addWidget(mGUpdated);
vLayout->addWidget(mGCanceled);
vLayout->addWidget(mGFinished);
vLayout->addWidget(mGPos);
vLayout->addWidget(radiusLabel);
vLayout->addWidget(mGTapRadius);
mTwoFingerRec = new KTwoFingerTapRecognizer();
kTwoFingerTapGesture = QGestureRecognizer::registerRecognizer(mTwoFingerRec);
mGTapRadius->setValue(mTwoFingerRec->tapRadius());
mWidget->grabGesture(kTwoFingerTapGesture);
mWidget->setAttribute(Qt::WA_AcceptTouchEvents);
mWidget->installEventFilter(this);
connect (mGTapRadius, &QSpinBox::valueChanged, this, &MainWindow::slotSwipeTimeChanged);
}
MainWindow::~MainWindow()
{
}
bool MainWindow::eventFilter(QObject *watched, QEvent *e)
{
if (e->type() == QEvent::TouchBegin) {
resetAll();
}
if (e->type() == QEvent::Gesture) {
QGestureEvent *gEvent = static_cast<QGestureEvent *>(e);
KTwoFingerTap *tap = static_cast<KTwoFingerTap *>(gEvent->gesture(kTwoFingerTapGesture));
if (tap) {
const Qt::GestureState state = tap->state();
if (state == Qt::GestureFinished) {
mGFinished->setCheckState(Qt::Checked);
} else if (state == Qt::GestureStarted) {
// We need to map the local position, because the tap->pos() is the local position which on received the gesture.
// In this case it is local to the Widgets in the layout.
const QPoint lokalPos = mWidget->mapFromGlobal(tap->scenePos().toPoint());
QString posStr = QStringLiteral("tap Position = ");
posStr += QString::number(lokalPos.x()) + QStringLiteral(",") + QString::number(lokalPos.y());
mGPos->setText(posStr);
mGStarted->setCheckState(Qt::Checked);
} else if (state == Qt::GestureUpdated) {
mGUpdated->setCheckState(Qt::Checked);
} else if (state == Qt::GestureCanceled) {
mGCanceled->setCheckState(Qt::Checked);
} else if (mGCanceled->isChecked() && mGFinished->isChecked()) {
qWarning()<<"ERROR: The gesture state is canceled and finished at the same time";
}
}
e->accept();
return true;
}
return QObject::eventFilter(watched, e);
}
void MainWindow::resetAll()
{
mGStarted->setCheckState(Qt::Unchecked);
mGUpdated->setCheckState(Qt::Unchecked);
mGCanceled->setCheckState(Qt::Unchecked);
mGFinished->setCheckState(Qt::Unchecked);
mGPos->setText(QString());
}
void MainWindow::slotSwipeTimeChanged(int value)
{
mTwoFingerRec->setTapRadius(value);
}
int main(int argc, char **argv)
{
QApplication::setApplicationName(QStringLiteral("ktwofingertap_test"));
QApplication app(argc, argv);
MainWindow mainWindow;
mainWindow.setGeometry(500, 200, 500, 500);
mainWindow.show();
return app.exec();
}
#include "moc_ktwofingertap_test.cpp"
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