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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qtslib_p.h"
#include <QSocketNotifier>
#include <QStringList>
#include <QPoint>
#include <QLoggingCategory>
#include <qpa/qwindowsysteminterface.h>
#include <errno.h>
#include <tslib.h>
QT_BEGIN_NAMESPACE
using namespace Qt::StringLiterals;
Q_LOGGING_CATEGORY(qLcTsLib, "qt.qpa.input")
QTsLibMouseHandler::QTsLibMouseHandler(const QString &key,
const QString &specification,
QObject *parent)
: QObject(parent),
m_rawMode(!key.compare("TslibRaw"_L1, Qt::CaseInsensitive))
{
qCDebug(qLcTsLib) << "Initializing tslib plugin" << key << specification;
setObjectName("TSLib Mouse Handler"_L1);
m_dev = ts_setup(nullptr, 1);
if (!m_dev) {
qErrnoWarning(errno, "ts_setup() failed");
return;
}
#ifdef TSLIB_VERSION_EVENTPATH /* also introduced in 1.15 */
qCDebug(qLcTsLib) << "tslib device is" << ts_get_eventpath(m_dev);
#endif
m_notify = new QSocketNotifier(ts_fd(m_dev), QSocketNotifier::Read, this);
connect(m_notify, &QSocketNotifier::activated, this, &QTsLibMouseHandler::readMouseData);
}
QTsLibMouseHandler::~QTsLibMouseHandler()
{
if (m_dev)
ts_close(m_dev);
}
static bool get_sample(struct tsdev *dev, struct ts_sample *sample, bool rawMode)
{
if (rawMode)
return (ts_read_raw(dev, sample, 1) == 1);
else
return (ts_read(dev, sample, 1) == 1);
}
void QTsLibMouseHandler::readMouseData()
{
ts_sample sample;
while (get_sample(m_dev, &sample, m_rawMode)) {
bool pressed = sample.pressure;
int x = sample.x;
int y = sample.y;
// coordinates on release events can contain arbitrary values, just ignore them
if (sample.pressure == 0) {
x = m_x;
y = m_y;
}
if (!m_rawMode) {
//filtering: ignore movements of 2 pixels or less
int dx = x - m_x;
int dy = y - m_y;
if (dx*dx <= 4 && dy*dy <= 4 && pressed == m_pressed)
continue;
}
QPoint pos(x, y);
QWindowSystemInterface::handleMouseEvent(nullptr, pos, pos,
pressed ? Qt::LeftButton : Qt::NoButton,
Qt::NoButton, QEvent::None);
m_x = x;
m_y = y;
m_pressed = pressed;
}
}
QT_END_NAMESPACE
#include "moc_qtslib_p.cpp"
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