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-rw-r--r--src/plugins/generic/touchscreen/qtouchscreen.cpp396
1 files changed, 0 insertions, 396 deletions
diff --git a/src/plugins/generic/touchscreen/qtouchscreen.cpp b/src/plugins/generic/touchscreen/qtouchscreen.cpp
deleted file mode 100644
index 8e04c10b9f..0000000000
--- a/src/plugins/generic/touchscreen/qtouchscreen.cpp
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@@ -1,396 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: http://www.qt-project.org/
-**
-** This file is part of the plugins module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qtouchscreen.h"
-#include <QStringList>
-#include <QHash>
-#include <QSocketNotifier>
-#include <QtCore/private/qcore_unix_p.h>
-#include <linux/input.h>
-#include <libudev.h>
-
-QT_BEGIN_NAMESPACE
-
-class QTouchScreenData
-{
-public:
- QTouchScreenData(QTouchScreenHandler *q_ptr, const QStringList &args);
-
- void processInputEvent(input_event *data);
- void assignIds();
-
- QTouchScreenHandler *q;
- int m_lastEventType;
- QList<QWindowSystemInterface::TouchPoint> m_touchPoints;
-
- struct Contact {
- int trackingId;
- int x;
- int y;
- int maj;
- int pressure;
- Qt::TouchPointState state;
- QTouchEvent::TouchPoint::InfoFlags flags;
- Contact() : trackingId(-1),
- x(0), y(0), maj(1), pressure(0),
- state(Qt::TouchPointPressed), flags(0) { }
- };
- QHash<int, Contact> m_contacts, m_lastContacts;
- Contact m_currentData;
-
- int findClosestContact(const QHash<int, Contact> &contacts, int x, int y, int *dist);
-
- int hw_range_x_min;
- int hw_range_x_max;
- int hw_range_y_min;
- int hw_range_y_max;
- int hw_pressure_min;
- int hw_pressure_max;
- QString hw_name;
-
- QList<QTouchScreenObserver *> m_observers;
-};
-
-QTouchScreenData::QTouchScreenData(QTouchScreenHandler *q_ptr, const QStringList &args)
- : q(q_ptr),
- m_lastEventType(-1),
- hw_range_x_min(0), hw_range_x_max(0),
- hw_range_y_min(0), hw_range_y_max(0),
- hw_pressure_min(0), hw_pressure_max(0)
-{
- Q_UNUSED(args);
-}
-
-QTouchScreenHandler::QTouchScreenHandler(const QString &spec)
- : m_notify(0), m_fd(-1), d(0)
-{
- setObjectName(QLatin1String("Linux Touch Handler"));
-
- QString dev = QLatin1String("/dev/input/event5");
- try_udev(&dev);
-
- QStringList args = spec.split(QLatin1Char(':'));
- for (int i = 0; i < args.count(); ++i)
- if (args.at(i).startsWith(QLatin1String("/dev/")))
- dev = args.at(i);
-
- qDebug("Using device '%s'", qPrintable(dev));
- m_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0);
-
- if (m_fd >= 0) {
- m_notify = new QSocketNotifier(m_fd, QSocketNotifier::Read, this);
- connect(m_notify, SIGNAL(activated(int)), this, SLOT(readData()));
- } else {
- qWarning("Cannot open input device '%s': %s", qPrintable(dev), strerror(errno));
- return;
- }
-
- d = new QTouchScreenData(this, args);
-
- input_absinfo absInfo;
- memset(&absInfo, 0, sizeof(input_absinfo));
- if (ioctl(m_fd, EVIOCGABS(ABS_MT_POSITION_X), &absInfo) >= 0) {
- qDebug("min X: %d max X: %d", absInfo.minimum, absInfo.maximum);
- d->hw_range_x_min = absInfo.minimum;
- d->hw_range_x_max = absInfo.maximum;
- }
- if (ioctl(m_fd, EVIOCGABS(ABS_MT_POSITION_Y), &absInfo) >= 0) {
- qDebug("min Y: %d max Y: %d", absInfo.minimum, absInfo.maximum);
- d->hw_range_y_min = absInfo.minimum;
- d->hw_range_y_max = absInfo.maximum;
- }
- if (ioctl(m_fd, EVIOCGABS(ABS_PRESSURE), &absInfo) >= 0) {
- qDebug("min pressure: %d max pressure: %d", absInfo.minimum, absInfo.maximum);
- if (absInfo.maximum > absInfo.minimum) {
- d->hw_pressure_min = absInfo.minimum;
- d->hw_pressure_max = absInfo.maximum;
- }
- }
- char name[1024];
- if (ioctl(m_fd, EVIOCGNAME(sizeof(name) - 1), name) >= 0) {
- d->hw_name = QString::fromLocal8Bit(name);
- qDebug("device name: %s", name);
- }
-}
-
-QTouchScreenHandler::~QTouchScreenHandler()
-{
- if (m_fd >= 0)
- QT_CLOSE(m_fd);
-
- delete d;
-}
-
-void QTouchScreenHandler::addObserver(QTouchScreenObserver *observer)
-{
- if (!d || !observer)
- return;
- d->m_observers.append(observer);
- observer->touch_configure(d->hw_range_x_min, d->hw_range_x_max,
- d->hw_range_y_min, d->hw_range_y_max,
- d->hw_pressure_min, d->hw_pressure_max,
- d->hw_name);
-}
-
-void QTouchScreenHandler::try_udev(QString *path)
-{
- *path = QString();
- udev *u = udev_new();
- udev_enumerate *ue = udev_enumerate_new(u);
- udev_enumerate_add_match_subsystem(ue, "input");
- udev_enumerate_add_match_property(ue, "ID_INPUT_TOUCHPAD", "1");
- udev_enumerate_scan_devices(ue);
- udev_list_entry *entry;
- udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(ue)) {
- const char *syspath = udev_list_entry_get_name(entry);
- udev_device *udevice = udev_device_new_from_syspath(u, syspath);
- QString candidate = QString::fromLocal8Bit(udev_device_get_devnode(udevice));
- udev_device_unref(udevice);
- if (path->isEmpty() && candidate.startsWith("/dev/input/event"))
- *path = candidate;
- }
- udev_enumerate_unref(ue);
- udev_unref(u);
-}
-
-void QTouchScreenHandler::readData()
-{
- ::input_event buffer[32];
- int n = 0;
- for (; ;) {
- n = QT_READ(m_fd, reinterpret_cast<char*>(buffer) + n, sizeof(buffer) - n);
-
- if (!n) {
- qWarning("Got EOF from input device");
- return;
- } else if (n < 0 && (errno != EINTR && errno != EAGAIN)) {
- qWarning("Could not read from input device: %s", strerror(errno));
- if (errno == ENODEV) { // device got disconnected -> stop reading
- delete m_notify;
- m_notify = 0;
- QT_CLOSE(m_fd);
- m_fd = -1;
- }
- return;
- } else if (n % sizeof(::input_event) == 0) {
- break;
- }
- }
-
- n /= sizeof(::input_event);
-
- for (int i = 0; i < n; ++i)
- d->processInputEvent(&buffer[i]);
-}
-
-void QTouchScreenData::processInputEvent(input_event *data)
-{
- if (data->type == EV_ABS) {
-
- if (data->code == ABS_MT_POSITION_X) {
- m_currentData.x = qBound(hw_range_x_min, data->value, hw_range_x_max);
- } else if (data->code == ABS_MT_POSITION_Y) {
- m_currentData.y = qBound(hw_range_y_min, data->value, hw_range_y_max);
- } else if (data->code == ABS_MT_TRACKING_ID) {
- m_currentData.trackingId = data->value;
- } else if (data->code == ABS_MT_TOUCH_MAJOR) {
- m_currentData.maj = data->value;
- if (data->value == 0)
- m_currentData.state = Qt::TouchPointReleased;
- } else if (data->code == ABS_PRESSURE) {
- m_currentData.pressure = qBound(hw_pressure_min, data->value, hw_pressure_max);
- }
-
- } else if (data->type == EV_SYN && data->code == SYN_MT_REPORT && m_lastEventType != EV_SYN) {
-
- // If there is no tracking id, one will be generated later.
- // Until that use a temporary key.
- int key = m_currentData.trackingId;
- if (key == -1)
- key = m_contacts.count();
-
- m_contacts.insert(key, m_currentData);
- m_currentData = Contact();
-
- } else if (data->type == EV_SYN && data->code == SYN_REPORT) {
-
- // Ensure valid IDs even when the driver does not report ABS_MT_TRACKING_ID.
- if (!m_contacts.isEmpty() && m_contacts.constBegin().value().trackingId == -1)
- assignIds();
-
- m_touchPoints.clear();
- Qt::TouchPointStates combinedStates;
- QMutableHashIterator<int, Contact> it(m_contacts);
- while (it.hasNext()) {
- it.next();
- QWindowSystemInterface::TouchPoint tp;
- Contact &contact(it.value());
- tp.id = contact.trackingId;
- tp.flags = contact.flags;
-
- if (m_lastContacts.contains(contact.trackingId)) {
- const Contact &prev(m_lastContacts.value(contact.trackingId));
- if (contact.state == Qt::TouchPointReleased) {
- // Copy over the previous values for released points, just in case.
- contact.x = prev.x;
- contact.y = prev.y;
- contact.maj = prev.maj;
- } else {
- contact.state = (prev.x == contact.x && prev.y == contact.y)
- ? Qt::TouchPointStationary : Qt::TouchPointMoved;
- }
- }
-
- // Avoid reporting a contact in released state more than once.
- if (contact.state == Qt::TouchPointReleased
- && !m_lastContacts.contains(contact.trackingId)) {
- it.remove();
- continue;
- }
-
- tp.state = contact.state;
- combinedStates |= tp.state;
-
- // Store the HW coordinates. Observers can then map it to screen space or something else.
- tp.area = QRectF(0, 0, contact.maj, contact.maj);
- tp.area.moveCenter(QPoint(contact.x, contact.y));
- tp.pressure = contact.pressure;
-
- // Get a normalized position in range 0..1.
- tp.normalPosition = QPointF((contact.x - hw_range_x_min) / qreal(hw_range_x_max - hw_range_x_min),
- (contact.y - hw_range_y_min) / qreal(hw_range_y_max - hw_range_y_min));
-
- m_touchPoints.append(tp);
-
- if (contact.state == Qt::TouchPointReleased)
- it.remove();
- }
-
- m_lastContacts = m_contacts;
- m_contacts.clear();
-
- if (!m_touchPoints.isEmpty() && combinedStates != Qt::TouchPointStationary) {
- for (int i = 0; i < m_observers.count(); ++i)
- m_observers.at(i)->touch_point(m_touchPoints);
- }
- }
-
- m_lastEventType = data->type;
-}
-
-int QTouchScreenData::findClosestContact(const QHash<int, Contact> &contacts, int x, int y, int *dist)
-{
- int minDist = -1, id = -1;
- for (QHash<int, Contact>::const_iterator it = contacts.constBegin(), ite = contacts.constEnd();
- it != ite; ++it) {
- const Contact &contact(it.value());
- int dx = x - contact.x;
- int dy = y - contact.y;
- int dist = dx * dx + dy * dy;
- if (minDist == -1 || dist < minDist) {
- minDist = dist;
- id = contact.trackingId;
- }
- }
- if (dist)
- *dist = minDist;
- return id;
-}
-
-void QTouchScreenData::assignIds()
-{
- QHash<int, Contact> candidates = m_lastContacts, pending = m_contacts, newContacts;
- int maxId = -1;
- QHash<int, Contact>::iterator it, ite, bestMatch;
- while (!pending.isEmpty() && !candidates.isEmpty()) {
- int bestDist = -1, bestId;
- for (it = pending.begin(), ite = pending.end(); it != ite; ++it) {
- int dist;
- int id = findClosestContact(candidates, it->x, it->y, &dist);
- if (id >= 0 && (bestDist == -1 || dist < bestDist)) {
- bestDist = dist;
- bestId = id;
- bestMatch = it;
- }
- }
- if (bestDist >= 0) {
- bestMatch->trackingId = bestId;
- newContacts.insert(bestId, *bestMatch);
- candidates.remove(bestId);
- pending.erase(bestMatch);
- if (bestId > maxId)
- maxId = bestId;
- }
- }
- if (candidates.isEmpty()) {
- for (it = pending.begin(), ite = pending.end(); it != ite; ++it) {
- it->trackingId = ++maxId;
- newContacts.insert(it->trackingId, *it);
- }
- }
- m_contacts = newContacts;
-}
-
-
-QTouchScreenHandlerThread::QTouchScreenHandlerThread(const QString &spec,
- QTouchScreenObserver *observer)
- : m_spec(spec), m_handler(0), m_observer(observer)
-{
- start();
-}
-
-QTouchScreenHandlerThread::~QTouchScreenHandlerThread()
-{
- quit();
- wait();
-}
-
-void QTouchScreenHandlerThread::run()
-{
- m_handler = new QTouchScreenHandler(m_spec);
- m_handler->addObserver(m_observer);
- exec();
- delete m_handler;
- m_handler = 0;
-}
-
-
-QT_END_NAMESPACE
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