1 files changed, 134 insertions, 0 deletions
diff --git a/src/platformsupport/input/tslib/qtslib.cpp b/src/platformsupport/input/tslib/qtslib.cpp
new file mode 100644
index 0000000000..e75fd9e691
--- /dev/null
+++ b/src/platformsupport/input/tslib/qtslib.cpp
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL21$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia. For licensing terms and
+** conditions see http://qt.digia.com/licensing. For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 or version 3 as published by the Free
+** Software Foundation and appearing in the file LICENSE.LGPLv21 and
+** LICENSE.LGPLv3 included in the packaging of this file. Please review the
+** following information to ensure the GNU Lesser General Public License
+** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights. These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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_notify(0), m_x(0), m_y(0), m_pressed(0), m_rawMode(false)
+{
+    qCDebug(qLcTsLib) << "Initializing tslib plugin" << key << specification;
+    setObjectName(QLatin1String("TSLib Mouse Handler"));
+
+    QByteArray device = qgetenv("TSLIB_TSDEVICE");
+
+    if (specification.startsWith(QStringLiteral("/dev/")))
+        device = specification.toLocal8Bit();
+
+    if (device.isEmpty())
+        device = QByteArrayLiteral("/dev/input/event1");
+
+    m_dev = ts_open(device.constData(), 1);
+    if (!m_dev) {
+        qErrnoWarning(errno, "ts_open() failed");
+        return;
+    }
+
+    if (ts_config(m_dev))
+        qErrnoWarning(errno, "ts_config() failed");
+
+    m_rawMode = !key.compare(QLatin1String("TslibRaw"), Qt::CaseInsensitive);
+
+    int fd = ts_fd(m_dev);
+    if (fd >= 0) {
+        qCDebug(qLcTsLib) << "tslib device is" << device;
+        m_notify = new QSocketNotifier(fd, QSocketNotifier::Read, this);
+        connect(m_notify, SIGNAL(activated(int)), this, SLOT(readMouseData()));
+    } else {
+        qErrnoWarning(errno, "tslib: Cannot open input device %s", device.constData());
+    }
+}
+
+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;
+
+        // work around missing coordinates on mouse release
+        if (sample.pressure == 0 && sample.x == 0 && sample.y == 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(0, pos, pos, pressed ? Qt::LeftButton : Qt::NoButton);
+
+        m_x = x;
+        m_y = y;
+        m_pressed = pressed;
+    }
+}
+
+QT_END_NAMESPACE