qmousepc_qws.cpp

奇趣公司比较新的qt/emd版本

        init();
    }

    void init()
    {
        setflags(B1200|CS7);
        // 60Hz
        if (write(fd, "R", 1)!=1) {
            badness = 100;
            return;
        }
        tcflush(fd,TCIOFLUSH);
    }

    int tryData()
    {
        if (!(buffer[0] & 0x40)) {
            if (buffer[0] == 0x20 && (bstate & Qt::MidButton)) {
                mman=1; // mouseman extension
            }
            return 1;
        }
        int extra = mman&&(bstate & Qt::MidButton);
        if (nbuf >= 3+extra) {
            int nbstate = 0;
            if (buffer[0] == 0x40 && !bstate && !buffer[1] && !buffer[2]) {
                nbstate = Qt::MidButton;
            } else {
                nbstate = ((buffer[0] & 0x20) >> 5)
                        | ((buffer[0] & 0x10) >> 3);
                if (extra && buffer[3] == 0x20)
                    nbstate = Qt::MidButton;
            }

            if (buffer[1] & 0x40) {
                badness++;
                return 1;
            } else {
                motion +=
                    QPoint((signed char)((buffer[0]&0x3)<<6)
                            |(signed char)(buffer[1]&0x3f),
                           (signed char)((buffer[0]&0xc)<<4)
                            |(signed char)(buffer[2]&0x3f));
                if (motion.x() || motion.y() || bstate != nbstate) {
                    bstate = nbstate;
                    goodness++;
                } else {
                    badness++;
                    return 1;
                }
                return 3+extra;
            }
        }
        return 0;
    }
};

//===========================================================================

class QWSPcMouseHandlerPrivate : public QObject
{
    Q_OBJECT
public:
    QWSPcMouseHandlerPrivate(QWSPcMouseHandler *h, const QString &, const QString &);
    ~QWSPcMouseHandlerPrivate();

    void suspend();
    void resume();

private:
    enum { max_dev=32 };
    QWSPcMouseSubHandler *sub[max_dev];
    QList<QSocketNotifier*> notifiers;
    int nsub;
    int retries;

private slots:
    void readMouseData(int);

private:
    void openDevices();
    void closeDevices();
    void notify(int fd);
    bool sendEvent(QWSPcMouseSubHandler& h);

private:
    QWSPcMouseHandler *handler;
    QString driver;
    QString device;
    qreal accel;
    int accel_limit;
};

QWSPcMouseHandler::QWSPcMouseHandler(const QString &driver, const QString &device)
    : QWSMouseHandler(driver, device)
{
    d = new QWSPcMouseHandlerPrivate(this, driver, device);
}

QWSPcMouseHandler::~QWSPcMouseHandler()
{
    delete d;
}

void QWSPcMouseHandler::suspend()
{
    d->suspend();
}

void QWSPcMouseHandler::resume()
{
    d->resume();
}


QWSPcMouseHandlerPrivate::QWSPcMouseHandlerPrivate(QWSPcMouseHandler *h,
    const QString &drv, const QString &arg)
    : handler(h), driver(drv)
{
    QStringList args = arg.split(QLatin1Char(':'), QString::SkipEmptyParts);

    int index;

    accel = qreal(2.0);
    QRegExp accelRegex(QLatin1String("^accel=(\\d+\\.?\\d*)$"));
    index = args.indexOf(accelRegex);
    if (index >= 0) {
        accel = qreal(accelRegex.cap(1).toDouble());
        args.removeAt(index);
    }

    accel_limit = 5;
    QRegExp accelLimitRegex(QLatin1String("^accel_limit=(\\d+)$"));
    index = args.indexOf(accelLimitRegex);
    if (index >= 0) {
        accel_limit = accelLimitRegex.cap(1).toInt();
        args.removeAt(index);
    }

    device = args.join(QString());

    retries = 0;
    openDevices();
}

QWSPcMouseHandlerPrivate::~QWSPcMouseHandlerPrivate()
{
    closeDevices();
}

/*
QWSPcMouseHandler::UsageResult QWSPcMouseHandler::useDev(Dev& d)
{
    if (d.nbuf >= mouseData[d.protocol].bytesPerPacket) {
        uchar *mb = d.buf;
        int bstate = 0;
        int dx = 0;
        int dy = 0;

        switch (mouseProtocol) {
            case MouseMan:
            case IntelliMouse:
            {
                bstate = mb[0] & 0x7; // assuming Qt::*Button order

                int overflow = (mb[0]>>6)& 0x03;
                if (mouseProtocol == MouseMan && overflow) {
                    //### wheel events signalled with overflow bit, ignore for now
                }
                else {
                    bool xs = mb[0] & 0x10;
                    bool ys = mb[0] & 0x20;
                    dx = xs ? mb[1]-256 : mb[1];
                    dy = ys ? mb[2]-256 : mb[2];
                }
                break;
            }
            case Microsoft:
                if (((mb[0] & 0x20) >> 3)) {
                    bstate |= Qt::LeftButton;
                }
                if (((mb[0] & 0x10) >> 4)) {
                    bstate |= Qt::RightButton;
                }

                dx=(signed char)(((mb[0] & 0x03) << 6) | (mb[1] & 0x3f));
                dy=-(signed char)(((mb[0] & 0x0c) << 4) | (mb[2] & 0x3f));

                break;
        }
    }
    }
*/


bool QWSPcMouseHandlerPrivate::sendEvent(QWSPcMouseSubHandler& h)
{
    if (h.reliable()) {
        QPoint motion = h.takeMotion();
        if (qAbs(motion.x()) > accel_limit || qAbs(motion.y()) > accel_limit)
            motion *= accel;
        QPoint newPos = handler->pos() + motion;
        if (qt_screen->isTransformed()) {
            QSize s = QSize(qt_screen->width(), qt_screen->height());
            newPos = qt_screen->mapToDevice(newPos, s);
        }
        handler->limitToScreen(newPos);

        handler->mouseChanged(newPos, h.buttonState(), h.takeWheel());
        return true;
    } else {
        h.takeMotion();
        if (h.buttonState() & (Qt::RightButton|Qt::MidButton)) {
            // Strange for the user to press right or middle without
            // a moving mouse!
            h.worse();
        }
        return false;
    }
}

void QWSPcMouseHandlerPrivate::openDevices()
{
    nsub=0;
    int fd = -1;

    if (!driver.isEmpty() && driver != QLatin1String("Auto")) {
        // Manually specified mouse
        QByteArray dev = device.toLatin1();
        if (driver == QLatin1String("IntelliMouse")) {
            if (dev.isEmpty())
                dev = "/dev/psaux";
            fd = open(dev, O_RDWR | O_NDELAY);
            if (fd >= 0)
                sub[nsub++] = new QWSPcMouseSubHandler_intellimouse(fd);
        } else if (driver == QLatin1String("Microsoft")) {
            if (dev.isEmpty())
                dev = "/dev/ttyS0";
            fd = open(dev, O_RDWR | O_NDELAY);
            if (fd >= 0)
                sub[nsub++] = new QWSPcMouseSubHandler_ms(fd);
        } else if (driver == QLatin1String("MouseSystems")) {
            if (dev.isEmpty())
                dev = "/dev/ttyS0";
            fd = open(dev, O_RDWR | O_NDELAY);
            if (fd >= 0)
                sub[nsub++] = new QWSPcMouseSubHandler_mousesystems(fd);
        } else if (driver == QLatin1String("MouseMan")) {
            if (dev.isEmpty())
                dev = "/dev/psaux";
            fd = open(dev, O_RDWR | O_NDELAY);
            if (fd >= 0)
                sub[nsub++] = new QWSPcMouseSubHandler_mouseman(fd);
        }
        if (fd >= 0)
            notify(fd);
	    else
                qCritical("Error opening mouse device '%s': %s",
                          dev.constData(), strerror(errno));
    } else {
        // Try automatically
        fd = open("/dev/psaux", O_RDWR | O_NDELAY);
        if (fd >= 0) {
            sub[nsub++] = new QWSPcMouseSubHandler_intellimouse(fd);
            notify(fd);
        }
        fd = open("/dev/input/mice", O_RDWR | O_NDELAY);
        if (fd >= 0) {
            sub[nsub++] = new QWSPcMouseSubHandler_intellimouse(fd);
            notify(fd);
            //qDebug("/dev/input/mice fd %d #%d", fd, nsub-1);
        }

// include the code below to auto-detect serial mice, and to mess up
// any sort of serial communication
#if 0
        const char fn[4][11] = { "/dev/ttyS0", "/dev/ttyS1", "/dev/ttyS2", "/dev/ttyS3" };
        for (int ch = 0; ch < 4; ++ch) {
            fd = open(fn[ch], O_RDWR | O_NDELAY);
            if (fd >= 0) {
                //sub[nsub++] = new QWSPcMouseSubHandler_intellimouse(fd);
                sub[nsub++] = new QWSPcMouseSubHandler_mousesystems(fd);
                sub[nsub++] = new QWSPcMouseSubHandler_ms(fd);
                notify(fd);
            }
        }
#endif
    }
}

void QWSPcMouseHandlerPrivate::closeDevices()
{
    int pfd=-1;
    for (int i=0; i<nsub; i++) {
        sub[i]->closeIfNot(pfd);
        delete sub[i];
    }
    qDeleteAll(notifiers);
    notifiers.clear();
}

void QWSPcMouseHandlerPrivate::suspend()
{
    for (int i=0; i<notifiers.size(); ++i)
        notifiers.at(i)->setEnabled(false);
}

void QWSPcMouseHandlerPrivate::resume()
{
    for (int i=0; i<nsub; i++)
        sub[i]->initState();

    for (int i=0; i<notifiers.size(); ++i)
        notifiers.at(i)->setEnabled(true);
}



void QWSPcMouseHandlerPrivate::notify(int fd)
{
    QSocketNotifier *mouseNotifier
        = new QSocketNotifier(fd, QSocketNotifier::Read, this);
    connect(mouseNotifier, SIGNAL(activated(int)),this, SLOT(readMouseData(int)));
    notifiers.append(mouseNotifier);
}

void QWSPcMouseHandlerPrivate::readMouseData(int fd)
{
    for (;;) {
        uchar buf[8];
        int n = read(fd, buf, 8);
        if (n<=0)
            break;
        for (int i=0; i<nsub; i++) {
            QWSPcMouseSubHandler& h = *sub[i];
            if (h.file() == fd) {
                h.appendData(buf,n);
                for (;;) {
                    switch (h.useData()) {
                      case QWSPcMouseSubHandler::Button:
                        sendEvent(h);
                        break;
                      case QWSPcMouseSubHandler::Insufficient:
                        goto breakbreak;
                      case QWSPcMouseSubHandler::Motion:
                        break;
                    }
                }
                breakbreak:
                    ;
            }
        }
    }
    bool any_reliable=false;
    for (int i=0; i<nsub; i++) {
        QWSPcMouseSubHandler& h = *sub[i];
        if (h.motionPending())
            sendEvent(h);
        any_reliable = any_reliable || h.reliable();
    }
    if (any_reliable) {
        // ... get rid of all unreliable ones?  All bad ones?
    } else if (retries < 2) {
        // Try again - maybe the mouse was being moved when we tried to init.
        closeDevices();
        openDevices();
        retries++;
    }
}

#include "qmousepc_qws.moc"