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-rw-r--r--src/platformsupport/input/evdevmouse/qevdevmousehandler.cpp105
1 files changed, 80 insertions, 25 deletions
diff --git a/src/platformsupport/input/evdevmouse/qevdevmousehandler.cpp b/src/platformsupport/input/evdevmouse/qevdevmousehandler.cpp
index 92f807095f..11db06680a 100644
--- a/src/platformsupport/input/evdevmouse/qevdevmousehandler.cpp
+++ b/src/platformsupport/input/evdevmouse/qevdevmousehandler.cpp
@@ -1,40 +1,32 @@
/****************************************************************************
**
-** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
-** $QT_BEGIN_LICENSE:LGPL$
+** $QT_BEGIN_LICENSE:LGPL21$
** 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
+** 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 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.
+** 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
+** rights. These rights are described in the Digia 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.
-**
-**
** $QT_END_LICENSE$
**
****************************************************************************/
@@ -60,6 +52,8 @@
//#define QT_QPA_MOUSE_HANDLER_DEBUG
+#define TEST_BIT(array, bit) (array[bit/8] & (1<<(bit%8)))
+
QT_BEGIN_NAMESPACE
QEvdevMouseHandler *QEvdevMouseHandler::create(const QString &device, const QString &specification)
@@ -71,6 +65,7 @@ QEvdevMouseHandler *QEvdevMouseHandler::create(const QString &device, const QStr
bool compression = true;
int jitterLimit = 0;
int grab = 0;
+ bool abs = false;
QStringList args = specification.split(QLatin1Char(':'));
foreach (const QString &arg, args) {
@@ -80,27 +75,37 @@ QEvdevMouseHandler *QEvdevMouseHandler::create(const QString &device, const QStr
jitterLimit = arg.mid(9).toInt();
else if (arg.startsWith(QLatin1String("grab=")))
grab = arg.mid(5).toInt();
+ else if (arg == QLatin1String("abs"))
+ abs = true;
}
int fd;
fd = qt_safe_open(device.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0);
if (fd >= 0) {
::ioctl(fd, EVIOCGRAB, grab);
- return new QEvdevMouseHandler(device, fd, compression, jitterLimit);
+ return new QEvdevMouseHandler(device, fd, abs, compression, jitterLimit);
} else {
qWarning("Cannot open mouse input device '%s': %s", qPrintable(device), strerror(errno));
return 0;
}
}
-QEvdevMouseHandler::QEvdevMouseHandler(const QString &device, int fd, bool compression, int jitterLimit)
+QEvdevMouseHandler::QEvdevMouseHandler(const QString &device, int fd, bool abs, bool compression, int jitterLimit)
: m_device(device), m_fd(fd), m_notify(0), m_x(0), m_y(0), m_prevx(0), m_prevy(0),
- m_compression(compression), m_buttons(0), m_prevInvalid(true)
+ m_abs(abs), m_compression(compression), m_buttons(0), m_prevInvalid(true)
{
setObjectName(QLatin1String("Evdev Mouse Handler"));
m_jitterLimitSquared = jitterLimit * jitterLimit;
+ // Some touch screens present as mice with absolute coordinates.
+ // These can not be differentiated from touchpads, so supplying abs to QT_QPA_EVDEV_MOUSE_PARAMETERS
+ // will force qevdevmousehandler to treat the coordinates as absolute, scaled to the hardware maximums.
+ // Turning this on will not affect mice as these do not report in absolute coordinates
+ // but will make touchpads act like touch screens
+ if (m_abs)
+ m_abs = getHardwareMaximum();
+
// socket notifier for events on the mouse device
QSocketNotifier *notifier;
notifier = new QSocketNotifier(m_fd, QSocketNotifier::Read, this);
@@ -113,16 +118,66 @@ QEvdevMouseHandler::~QEvdevMouseHandler()
qt_safe_close(m_fd);
}
+// Ask touch screen hardware for information on coordinate maximums
+// If any ioctls fail, revert to non abs mode
+bool QEvdevMouseHandler::getHardwareMaximum()
+{
+ unsigned char absFeatures[(ABS_MAX / 8) + 1];
+ memset(absFeatures, '\0', sizeof (absFeatures));
+
+ // test if ABS_X, ABS_Y are available
+ if (ioctl(m_fd, EVIOCGBIT(EV_ABS, sizeof (absFeatures)), absFeatures) == -1)
+ return false;
+
+ if ((!TEST_BIT(absFeatures, ABS_X)) || (!TEST_BIT(absFeatures, ABS_Y)))
+ return false;
+
+ // ask hardware for minimum and maximum values
+ struct input_absinfo absInfo;
+ if (ioctl(m_fd, EVIOCGABS(ABS_X), &absInfo) == -1)
+ return false;
+
+ m_hardwareWidth = absInfo.maximum - absInfo.minimum;
+
+ if (ioctl(m_fd, EVIOCGABS(ABS_Y), &absInfo) == -1)
+ return false;
+
+ m_hardwareHeight = absInfo.maximum - absInfo.minimum;
+
+ QRect g = QGuiApplication::primaryScreen()->virtualGeometry();
+ m_hardwareScalerX = static_cast<qreal>(m_hardwareWidth) / (g.right() - g.left());
+ m_hardwareScalerY = static_cast<qreal>(m_hardwareHeight) / (g.bottom() - g.top());
+
+#ifdef QT_QPA_MOUSE_HANDLER_DEBUG
+ qDebug() << "Absolute pointing device";
+ qDebug() << "hardware max x" << m_hardwareWidth;
+ qDebug() << "hardware max y" << m_hardwareHeight;
+ qDebug() << "hardware scalers x" << m_hardwareScalerX << "y" << m_hardwareScalerY;
+#endif
+
+ return true;
+}
+
void QEvdevMouseHandler::sendMouseEvent()
{
- int x = m_x - m_prevx;
- int y = m_y - m_prevy;
+ int x;
+ int y;
+
+ if (!m_abs) {
+ x = m_x - m_prevx;
+ y = m_y - m_prevy;
+ }
+ else {
+ x = m_x / m_hardwareScalerX;
+ y = m_y / m_hardwareScalerY;
+ }
+
if (m_prevInvalid) {
x = y = 0;
m_prevInvalid = false;
}
- emit handleMouseEvent(x, y, m_buttons);
+ emit handleMouseEvent(x, y, m_abs, m_buttons);
m_prevx = m_x;
m_prevy = m_y;
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-08 08:33:32 +0000