QWSPcMouseSubHandler_intellimouse Class Reference

Inheritance diagram for QWSPcMouseSubHandler_intellimouse:

Public Functions
void	init ()
	QWSPcMouseSubHandler_intellimouse (int f)
int	tryData ()
Public Functions inherited from QWSPcMouseSubHandler
void	appendData (uchar *data, int length)
int	buttonState () const
void	closeIfNot (int &f)
int	file () const
void	initState ()
bool	motionPending () const
	QWSPcMouseSubHandler (int f)
bool	reliable () const
QPoint	takeMotion ()
int	takeWheel ()
UsageResult	useData ()
void	worse (int by=1)
virtual	~QWSPcMouseSubHandler ()

Properties
int	packetsize

Additional Inherited Members
Public Types inherited from QWSPcMouseSubHandler
enum	UsageResult { Insufficient, Motion, Button }
Protected Types inherited from QWSPcMouseSubHandler
enum	{ max_buf =32 }
Protected Variables inherited from QWSPcMouseSubHandler
int	badness
int	bstate
uchar	buffer [max_buf]
int	fd
int	goodness
QPoint	motion
int	nbuf
int	wheel

Detailed Description

Definition at line 154 of file qmousepc_qws.cpp.

Constructors and Destructors

QWSPcMouseSubHandler_intellimouse()

QWSPcMouseSubHandler_intellimouse::QWSPcMouseSubHandler_intellimouse ( int  f )

inline

Definition at line 157 of file qmousepc_qws.cpp.

                                             : QWSPcMouseSubHandler(f)
    {
        init();
    }

Functions

init()

void QWSPcMouseSubHandler_intellimouse::init ( )

inline

Definition at line 162 of file qmousepc_qws.cpp.

    {
        int n;
        uchar reply[20];

        if (tcflush(fd,TCIOFLUSH) == -1) {
#ifdef QWS_MOUSE_DEBUG
            perror("QWSPcMouseSubHandler_intellimouse: pre-init tcflush");
#endif
        }
        static const uchar initseq[] = { 243, 200, 243, 100, 243, 80 };
        static const uchar query[] = { 0xf2 };
        if (QT_WRITE(fd, initseq, sizeof(initseq))!=sizeof(initseq)) {
            badness = 100;
            return;
        }
        usleep(10000);
        if (tcflush(fd,TCIOFLUSH) == -1) {
#ifdef QWS_MOUSE_DEBUG
            perror("QWSPcMouseSubHandler_intellimouse: post-init tcflush");
#endif
        }
        if (QT_WRITE(fd, query, sizeof(query))!=sizeof(query)) {
            badness = 100;
            return;
        }
        usleep(10000);
        n = QT_READ(fd, reply, 20);
        if (n > 0) {
            goodness = 10;
            switch (reply[n-1]) {
              case 3:
              case 4:
                packetsize = 4;
                break;
             default:
                packetsize = 3;
            }
        } else {
            badness = 100;
        }
    }

tryData()

int QWSPcMouseSubHandler_intellimouse::tryData ( )

inlinevirtual

Implements QWSPcMouseSubHandler.

Definition at line 205 of file qmousepc_qws.cpp.

    {
        if (nbuf >= packetsize) {
            //int overflow = (buffer[0]>>6)& 0x03;

            if (/*overflow ||*/ !(buffer[0] & 8)) {
#ifdef QWS_MOUSE_DEBUG
                qDebug("Intellimouse: skipping (overflow)");
#endif
                badness++;
                return 1;
            } else {
                QPoint delta((buffer[0] & 0x10) ? buffer[1]-256 : buffer[1],
                       (buffer[0] & 0x20) ? 256-buffer[2] : -buffer[2]);
                motion += delta;
                int nbstate = buffer[0] & 0x7;
#ifdef QWS_MOUSE_DEBUG
                int debugwheel =
#endif
                wheel = packetsize > 3 ? -(signed char)buffer[3] : 0;
                if (wheel < -2 || wheel > 2)
                    wheel = 0;
                wheel *= 120; // WHEEL_DELTA?
#ifdef QWS_MOUSE_DEBUG
                qDebug("Intellimouse: motion %d,%d, state %d, raw wheel %d, wheel %d", motion.x(), motion.y(), nbstate, debugwheel, wheel);
#endif
                if (motion.x() || motion.y() || bstate != nbstate || wheel) {
                    bstate = nbstate;
                    goodness++;
                } else {
                    badness++;
                    return 1;
                }
            }
            return packetsize;
        }
        return 0;
    }

Properties

packetsize

int QWSPcMouseSubHandler_intellimouse::packetsize

private

Definition at line 155 of file qmousepc_qws.cpp.

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The documentation for this class was generated from the following file:

• /src/gui/embedded/qmousepc_qws.cpp