qmousepc_qws.cpp

奇趣公司比较新的qt/emd版本

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#include "qmousepc_qws.h"

#include "qwindowsystem_qws.h"
#include "qsocketnotifier.h"
#include "qwsevent_qws.h"
#include "qwscommand_qws_p.h"
#include "qwsutils_qws.h"

#include "qapplication.h"
#include "qpolygon.h"
#include "qtimer.h"
#include "qfile.h"
#include "qtextstream.h"
#include "qstringlist.h"

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <termios.h>

#include <qscreen_qws.h>

//#define QWS_MOUSE_DEBUG

/*
 * Automatic-detection mouse driver
 */

class QWSPcMouseSubHandler {
protected:
    enum { max_buf=32 };

    int fd;

    uchar buffer[max_buf];
    int nbuf;

    QPoint motion;
    int bstate;
    int wheel;

    int goodness;
    int badness;

    virtual int tryData()=0;

public:
    QWSPcMouseSubHandler(int f) : fd(f)
    {
        initState();
    }
    virtual ~QWSPcMouseSubHandler() {}

    int file() const { return fd; }

    void closeIfNot(int& f)
    {
        if (fd != f) {
            f = fd;
            close(fd);
        }
    }

    void initState() { nbuf = bstate = goodness = badness = 0; }

    void worse(int by=1) { badness+=by; }
    bool reliable() const { return goodness >= 5 && badness < 50; }
    int buttonState() const { return bstate; }
    bool motionPending() const { return motion!=QPoint(0,0); }
    QPoint takeMotion() { QPoint r=motion; motion=QPoint(0,0); return r; }
    int takeWheel() { int result = wheel; wheel = 0; return result; }

    void appendData(uchar* data, int length)
    {
        memcpy(buffer+nbuf, data, length);
        nbuf += length;
    }

    enum UsageResult { Insufficient, Motion, Button };

    UsageResult useData()
    {
        int pbstate = bstate;
        int n = tryData();
#ifdef QWS_MOUSE_DEBUG
        if (n) {
            fprintf(stderr, "QWSPcMouseSubHandler tryData read %d bytes:", n);
            for (int i=0; i<n; ++i)
                fprintf(stderr, " %02x", buffer[i]);
            fprintf(stderr, "\n");
        }
#endif
        if (n > 0) {
            if (n<nbuf)
                memmove(buffer, buffer+n, nbuf-n);
            nbuf -= n;
            return (wheel || pbstate != bstate) ? Button : Motion;
        }
        return Insufficient;
    }
};

class QWSPcMouseSubHandler_intellimouse : public QWSPcMouseSubHandler {
    int packetsize;
public:
    QWSPcMouseSubHandler_intellimouse(int f) : QWSPcMouseSubHandler(f)
    {
        init();
    }

    void init()
    {
        int n;
        uchar reply[20];

        tcflush(fd,TCIOFLUSH);
        static const uchar initseq[] = { 243, 200, 243, 100, 243, 80 };
        static const uchar query[] = { 0xf2 };
        if (write(fd, initseq, sizeof(initseq))!=sizeof(initseq)) {
            badness = 100;
            return;
        }
        usleep(10000);
        tcflush(fd,TCIOFLUSH);
        if (write(fd, query, sizeof(query))!=sizeof(query)) {
            badness = 100;
            return;
        }
        usleep(10000);
        n = 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;
        }
    }

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

            if (/*overflow ||*/ !(buffer[0] & 8)) {
                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;
    }
};

class QWSPcMouseSubHandler_mouseman : public QWSPcMouseSubHandler {
    int packetsize;
public:
    QWSPcMouseSubHandler_mouseman(int f) : QWSPcMouseSubHandler(f)
    {
        init();
    }

    void init()
    {
        tcflush(fd,TCIOFLUSH);
        write(fd,"",1);
        usleep(50000);
        write(fd,"@EeI!",5);
        usleep(10000);
        static const char ibuf[] = { 246, 244 };
        write(fd,ibuf,1);
        write(fd,ibuf+1,1);
        tcflush(fd,TCIOFLUSH);
        usleep(10000);

        char buf[100];
        while (read(fd, buf, 100) > 0) { }  // eat unwanted replies
    }

    int tryData()
    {
        if (nbuf >= 3) {
            int nbstate = 0;
            if (buffer[0] & 0x01)
                nbstate |= Qt::LeftButton;
            if (buffer[0] & 0x02)
                nbstate |= Qt::RightButton;
            if (buffer[0] & 0x04)
                nbstate |= Qt::MidButton;

            int overflow = (buffer[0]>>6)& 0x03;
            if (overflow) {
                //### wheel events signalled with overflow bit, ignore for now
                badness++;
                return 1;
            } else {
                bool xs = buffer[0] & 0x10;
                bool ys = buffer[0] & 0x20;
                int dx = xs ? buffer[1]-256 : buffer[1];
                int dy = ys ? buffer[2]-256 : buffer[2];

                motion += QPoint(dx, -dy);
                if (motion.x() || motion.y() || bstate != nbstate) {
                    bstate = nbstate;
                    goodness++;
                } else {
                    badness++;
                    return 1;
                }
            }
            return 3;
        }
        return 0;
    }
};

class QWSPcMouseSubHandler_serial : public QWSPcMouseSubHandler {
public:
    QWSPcMouseSubHandler_serial(int f) : QWSPcMouseSubHandler(f)
    {
        initSerial();
    }

protected:
    void setflags(int f)
    {
        termios tty;
        tcgetattr(fd, &tty);
        tty.c_iflag     = IGNBRK | IGNPAR;
        tty.c_oflag     = 0;
        tty.c_lflag     = 0;
        tty.c_cflag     = f | CREAD | CLOCAL | HUPCL;
#if !defined(Q_OS_DARWIN) && !defined(Q_OS_SOLARIS) && !defined(Q_OS_INTEGRITY)
        tty.c_line      = 0;
#endif
        tty.c_cc[VTIME] = 0;
        tty.c_cc[VMIN]  = 1;
        tcsetattr(fd, TCSANOW, &tty);
    }

private:
    void initSerial()
    {
        int speed[4] = { B9600, B4800, B2400, B1200 };

        for (int n = 0; n < 4; n++) {
            setflags(CSTOPB | speed[n]);
            write(fd, "*q", 2);
            usleep(10000);
        }
    }
};

class QWSPcMouseSubHandler_mousesystems : public QWSPcMouseSubHandler_serial {
public:
    // ##### This driver has not been tested

    QWSPcMouseSubHandler_mousesystems(int f) : QWSPcMouseSubHandler_serial(f)
    {
        init();
    }

    void init()
    {
        setflags(B1200|CS8|CSTOPB);
        // 60Hz
        if (write(fd, "R", 1)!=1) {
            badness = 100;
            return;
        }
        tcflush(fd,TCIOFLUSH);
    }

    int tryData()
    {
        if (nbuf >= 5) {
            if ((buffer[0] & 0xf8) != 0x80) {
                badness++;
                return 1;
            }
            motion +=
                QPoint((signed char)buffer[1] + (signed char)buffer[3],
                       -(signed char)buffer[2] + (signed char)buffer[4]);
            int t = ~buffer[0];
            int nbstate = ((t&3) << 1) | ((t&4) >> 2);
            if (motion.x() || motion.y() || bstate != nbstate) {
                bstate = nbstate;
                goodness++;
            } else {
                badness++;
                return 1;
            }
            return 5;
        }
        return 0;
    }
};

class QWSPcMouseSubHandler_ms : public QWSPcMouseSubHandler_serial {
    int mman;
public:
    QWSPcMouseSubHandler_ms(int f) : QWSPcMouseSubHandler_serial(f)
    {
        mman=0;