--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/embedded/qmousetslib_qws.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,371 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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.
+**
+** 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmousetslib_qws.h"
+
+#if !defined(QT_NO_QWS_MOUSE_TSLIB) || defined(QT_PLUGIN)
+
+#include <QtCore/qregexp.h>
+#include <QtCore/qstringlist.h>
+#include "qsocketnotifier.h"
+#include "qscreen_qws.h"
+
+#include <tslib.h>
+#include <errno.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifdef TSLIBMOUSEHANDLER_DEBUG
+# include <QtCore/QDebug>
+#endif
+
+/*!
+ \internal
+
+ \class QWSTslibMouseHandler
+ \ingroup qws
+
+ \brief The QWSTslibMouseHandler class implements a mouse driver
+ for the Universal Touch Screen Library, tslib.
+
+ QWSTslibMouseHandler inherits the QWSCalibratedMouseHandler class,
+ providing calibration and noise reduction functionality in
+ addition to generating mouse events, for devices using the
+ Universal Touch Screen Library.
+
+ To be able to compile this mouse handler, \l{Qt for Embedded Linux}
+ must be configured with the \c -qt-mouse-tslib option, see the
+ \l{Pointer Handling} documentation for details. In addition, the tslib
+ headers and library must be present in the build environment. The
+ tslib sources can be downloaded from \l
+ {http://tslib.berlios.de/}. Use the \c -L and \c -I options
+ with \c configure to explicitly specify the location of the
+ library and its headers:
+
+ \snippet doc/src/snippets/code/src_gui_embedded_qmousetslib_qws.cpp 0
+
+ In order to use this mouse handler, tslib must also be correctly
+ installed on the target machine. This includes providing a \c
+ ts.conf configuration file and setting the necessary environment
+ variables, see the README file provided with tslib for details.
+
+ The ts.conf file will usually contain the following two lines
+
+ \snippet doc/src/snippets/code/src_gui_embedded_qmousetslib_qws.cpp 1
+
+ To make \l{Qt for Embedded Linux} explicitly choose the tslib mouse
+ handler, set the QWS_MOUSE_PROTO environment variable.
+
+ \sa {Pointer Handling}, {Qt for Embedded Linux}
+*/
+
+class QWSTslibMouseHandlerPrivate : public QObject
+{
+ Q_OBJECT
+public:
+ QWSTslibMouseHandlerPrivate(QWSTslibMouseHandler *h,
+ const QString &device);
+ ~QWSTslibMouseHandlerPrivate();
+
+ void suspend();
+ void resume();
+
+ void calibrate(const QWSPointerCalibrationData *data);
+ void clearCalibration();
+
+private:
+ QWSTslibMouseHandler *handler;
+ struct tsdev *dev;
+ QSocketNotifier *mouseNotifier;
+ int jitter_limit;
+
+ struct ts_sample lastSample;
+ bool wasPressed;
+ int lastdx;
+ int lastdy;
+
+ bool calibrated;
+ QString devName;
+
+ bool open();
+ void close();
+ inline bool get_sample(struct ts_sample *sample);
+
+private slots:
+ void readMouseData();
+};
+
+QWSTslibMouseHandlerPrivate::QWSTslibMouseHandlerPrivate(QWSTslibMouseHandler *h,
+ const QString &device)
+ : handler(h), dev(0), mouseNotifier(0), jitter_limit(3)
+{
+ QStringList args = device.split(QLatin1Char(':'), QString::SkipEmptyParts);
+ QRegExp jitterRegex(QLatin1String("^jitter_limit=(\\d+)$"));
+ int index = args.indexOf(jitterRegex);
+ if (index >= 0) {
+ jitter_limit = jitterRegex.cap(1).toInt();
+ args.removeAt(index);
+ }
+
+ devName = args.join(QString());
+
+ if (devName.isNull()) {
+ const char *str = getenv("TSLIB_TSDEVICE");
+ if (str)
+ devName = QString::fromLocal8Bit(str);
+ }
+
+ if (devName.isNull())
+ devName = QLatin1String("/dev/ts");
+
+ if (!open())
+ return;
+
+ calibrated = true;
+
+ int fd = ts_fd(dev);
+ mouseNotifier = new QSocketNotifier(fd, QSocketNotifier::Read, this);
+ connect(mouseNotifier, SIGNAL(activated(int)),this, SLOT(readMouseData()));
+ resume();
+}
+
+QWSTslibMouseHandlerPrivate::~QWSTslibMouseHandlerPrivate()
+{
+ close();
+}
+
+bool QWSTslibMouseHandlerPrivate::open()
+{
+ dev = ts_open(devName.toLocal8Bit().constData(), 1);
+ if (!dev) {
+ qCritical("QWSTslibMouseHandlerPrivate: ts_open() failed"
+ " with error: '%s'", strerror(errno));
+ qCritical("Please check your tslib installation!");
+ return false;
+ }
+
+ if (ts_config(dev)) {
+ qCritical("QWSTslibMouseHandlerPrivate: ts_config() failed"
+ " with error: '%s'", strerror(errno));
+ qCritical("Please check your tslib installation!");
+ close();
+ return false;
+ }
+
+ return true;
+}
+
+void QWSTslibMouseHandlerPrivate::close()
+{
+ if (dev)
+ ts_close(dev);
+}
+
+void QWSTslibMouseHandlerPrivate::suspend()
+{
+ if (mouseNotifier)
+ mouseNotifier->setEnabled(false);
+}
+
+void QWSTslibMouseHandlerPrivate::resume()
+{
+ memset(&lastSample, 0, sizeof(lastSample));
+ wasPressed = false;
+ lastdx = 0;
+ lastdy = 0;
+ if (mouseNotifier)
+ mouseNotifier->setEnabled(true);
+}
+
+bool QWSTslibMouseHandlerPrivate::get_sample(struct ts_sample *sample)
+{
+ if (!calibrated)
+ return (ts_read_raw(dev, sample, 1) == 1);
+
+ return (ts_read(dev, sample, 1) == 1);
+}
+
+void QWSTslibMouseHandlerPrivate::readMouseData()
+{
+ if (!qt_screen)
+ return;
+
+ for(;;) {
+ struct ts_sample sample = lastSample;
+ bool pressed = wasPressed;
+
+ // Fast return if there's no events.
+ if (!get_sample(&sample))
+ return;
+ pressed = (sample.pressure > 0);
+
+ // Only return last sample unless there's a press/release event.
+ while (pressed == wasPressed) {
+ if (!get_sample(&sample))
+ break;
+ pressed = (sample.pressure > 0);
+ }
+
+ // work around missing coordinates on mouse release in raw mode
+ if (!calibrated && !pressed && sample.x == 0 && sample.y == 0) {
+ sample.x = lastSample.x;
+ sample.y = lastSample.y;
+ }
+
+ int dx = sample.x - lastSample.x;
+ int dy = sample.y - lastSample.y;
+
+ // Remove small movements in oppsite direction
+ if (dx * lastdx < 0 && qAbs(dx) < jitter_limit) {
+ sample.x = lastSample.x;
+ dx = 0;
+ }
+ if (dy * lastdy < 0 && qAbs(dy) < jitter_limit) {
+ sample.y = lastSample.y;
+ dy = 0;
+ }
+
+ if (wasPressed == pressed && dx == 0 && dy == 0)
+ return;
+
+#ifdef TSLIBMOUSEHANDLER_DEBUG
+ qDebug() << "last" << QPoint(lastSample.x, lastSample.y)
+ << "curr" << QPoint(sample.x, sample.y)
+ << "dx,dy" << QPoint(dx, dy)
+ << "ddx,ddy" << QPoint(dx*lastdx, dy*lastdy)
+ << "pressed" << wasPressed << pressed;
+#endif
+
+ lastSample = sample;
+ wasPressed = pressed;
+ if (dx != 0)
+ lastdx = dx;
+ if (dy != 0)
+ lastdy = dy;
+
+ const QPoint p(sample.x, sample.y);
+ if (calibrated) {
+ // tslib should do all the translation and filtering, so we send a
+ // "raw" mouse event
+ handler->QWSMouseHandler::mouseChanged(p, pressed);
+ } else {
+ handler->sendFiltered(p, pressed);
+ }
+ }
+}
+
+void QWSTslibMouseHandlerPrivate::clearCalibration()
+{
+ suspend();
+ close();
+ handler->QWSCalibratedMouseHandler::clearCalibration();
+ calibrated = false;
+ open();
+ resume();
+}
+
+void QWSTslibMouseHandlerPrivate::calibrate(const QWSPointerCalibrationData *data)
+{
+ suspend();
+ close();
+ // default implementation writes to /etc/pointercal
+ // using the same format as the tslib linear module.
+ handler->QWSCalibratedMouseHandler::calibrate(data);
+ calibrated = true;
+ open();
+ resume();
+}
+
+/*!
+ \internal
+*/
+QWSTslibMouseHandler::QWSTslibMouseHandler(const QString &driver,
+ const QString &device)
+ : QWSCalibratedMouseHandler(driver, device)
+{
+ d = new QWSTslibMouseHandlerPrivate(this, device);
+}
+
+/*!
+ \internal
+*/
+QWSTslibMouseHandler::~QWSTslibMouseHandler()
+{
+ delete d;
+}
+
+/*!
+ \reimp
+*/
+void QWSTslibMouseHandler::suspend()
+{
+ d->suspend();
+}
+
+/*!
+ \reimp
+*/
+void QWSTslibMouseHandler::resume()
+{
+ d->resume();
+}
+
+/*!
+ \reimp
+*/
+void QWSTslibMouseHandler::clearCalibration()
+{
+ d->clearCalibration();
+}
+
+/*!
+ \reimp
+*/
+void QWSTslibMouseHandler::calibrate(const QWSPointerCalibrationData *data)
+{
+ d->calibrate(data);
+}
+
+QT_END_NAMESPACE
+
+#include "qmousetslib_qws.moc"
+
+#endif //QT_NO_QWS_MOUSE_TSLIB