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| ** This file is part of the plugins module of the Qt Toolkit. |
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| ****************************************************************************/ |
| |
| #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 |
| |
| Q_LOGGING_CATEGORY(qLcTsLib, "qt.qpa.input") |
| |
| QTsLibMouseHandler::QTsLibMouseHandler(const QString &key, |
| const QString &specification, |
| QObject *parent) |
| : QObject(parent), |
| m_rawMode(!key.compare(QLatin1String("TslibRaw"), Qt::CaseInsensitive)) |
| { |
| qCDebug(qLcTsLib) << "Initializing tslib plugin" << key << specification; |
| setObjectName(QLatin1String("TSLib Mouse Handler")); |
| |
| 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 |