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/****************************************************************************
**
** 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 plugins 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 "linuxismousehandler.h"
#include <QFile>
#include <QTextStream>
#include <QScreen>
#include <QSocketNotifier>
#include <QDebug>
#include <qdebug.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <linux/input.h>
#if 1
#define qLog(x) qDebug()
#else
#define qLog(x) while (0) qDebug()
#endif
// sanity check values of the range of possible mouse positions
#define MOUSE_SAMPLE_MIN 0
#define MOUSE_SAMPLE_MAX 2000
LinuxInputSubsystemMouseHandler::LinuxInputSubsystemMouseHandler(const QString &device)
: mouseX(0), mouseY(0), mouseBtn(0), mouseIdx(0)
{
qLog(Input) << "Loaded LinuxInputSubsystem touchscreen plugin!";
setObjectName("LinuxInputSubsystem Mouse Handler");
mouseFd = ::open(device.toLocal8Bit().constData(), O_RDONLY | O_NDELAY);
// mouseFd = ::open(device.toLocal8Bit().constData(), O_RDONLY);
if (mouseFd >= 0) {
qLog(Input) << "Opened" << device << "as touchscreen input";
m_notify = new QSocketNotifier(mouseFd, QSocketNotifier::Read, this);
connect(m_notify, SIGNAL(activated(int)), this, SLOT(readMouseData()));
} else {
qWarning("Cannot open %s for touchscreen input (%s)",
device.toLocal8Bit().constData(), strerror(errno));
return;
}
}
LinuxInputSubsystemMouseHandler::~LinuxInputSubsystemMouseHandler()
{
if (mouseFd >= 0)
::close(mouseFd);
}
void LinuxInputSubsystemMouseHandler::suspend()
{
m_notify->setEnabled( false );
}
void LinuxInputSubsystemMouseHandler::resume()
{
m_notify->setEnabled( true );
}
void LinuxInputSubsystemMouseHandler::readMouseData()
{
if (!qt_screen)
return;
int n;
do {
n = read(mouseFd, mouseBuf + mouseIdx, mouseBufSize - mouseIdx);
if (n > 0)
mouseIdx += n;
struct input_event *data;
int idx = 0;
while (mouseIdx-idx >= (int)sizeof(struct input_event)) {
uchar *mb = mouseBuf + idx;
data = (struct input_event *) mb;
// qLog(Input) << "mouse event type =" << data->type << "code =" << data->code << "value =" << data->value;
bool unknown = false;
if (data->type == EV_ABS) {
if (data->code == ABS_X) {
//qLog(Input) << "\tABS_X" << data->value;
mouseX = data->value;
} else if (data->code == ABS_Y) {
//qLog(Input) << "\tABS_Y" << data->value;
mouseY = data->value;
} else {
unknown = true;
}
} else if (data->type == EV_REL) {
//qLog(Input) << "\tEV_REL" << hex << data->code << dec << data->value;
if (data->code == REL_X) {
mouseX += data->value;
} else if (data->code == REL_Y) {
mouseY += data->value;
} else {
unknown = true;
}
} else if (data->type == EV_KEY && data->code == BTN_TOUCH) {
qLog(Input) << "\tBTN_TOUCH" << data->value;
mouseBtn = data->value ? Qt::LeftButton : 0;
} else if (data->type == EV_KEY) {
int button = 0;
switch (data->code) {
case BTN_LEFT: button = Qt::LeftButton; break;
case BTN_MIDDLE: button = Qt::MidButton; break;
case BTN_RIGHT: button = Qt::RightButton; break;
}
if (data->value)
mouseBtn |= button;
else
mouseBtn &= ~button;
} else if (data->type == EV_SYN && data->code == SYN_REPORT) {
QPoint pos( mouseX, mouseY );
oldmouse = transform( pos );
//qLog(Input) << "\tSYN_REPORT" << mouseBtn << pos << oldmouse;
emit mouseChanged(oldmouse, mouseBtn);
} else {
unknown = true;
}
if (unknown) {
qWarning("unknown mouse event type=%x, code=%x, value=%x", data->type, data->code, data->value);
}
idx += sizeof(struct input_event);
}
int surplus = mouseIdx - idx;
for (int i = 0; i < surplus; i++)
mouseBuf[i] = mouseBuf[idx+i];
mouseIdx = surplus;
} while (n > 0);
}
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