qscreenvnc_qws.cpp

奇趣公司比较新的qt/emd版本

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#include "qscreenvnc_qws.h"

#ifndef QT_NO_QWS_VNC

#include "qscreenvnc_p.h"
#include "qwindowsystem_qws.h"
#include "qwsdisplay_qws.h"
#include "qscreendriverfactory_qws.h"
#include <QtCore/qtimer.h>
#include <QtCore/qregexp.h>
#include <QtGui/qwidget.h>
#include <QtGui/qpolygon.h>
#include <QtGui/qpainter.h>
#include <qdebug.h>
#include <private/qwindowsurface_qws_p.h>
#include <private/qwssignalhandler_p.h>
#include <private/qwidget_p.h>

#include <stdlib.h>

//#define QT_QWS_VNC_DEBUG

extern QString qws_qtePipeFilename();

#ifndef QT_NO_QWS_CURSOR

inline void QVNCCursor::setDirty(const QRect &r) const
{
    screen->d_ptr->setDirty(r, true);
}

void QVNCCursor::hide()
{
    QScreenCursor::hide();
    if (enable)
        setDirty(boundingRect());
}

void QVNCCursor::show()
{
    QScreenCursor::show();
    if (!enable)
        setDirty(boundingRect());
}

void QVNCCursor::set(const QImage &image, int hotx, int hoty)
{
    QRegion dirty = boundingRect();
    QScreenCursor::set(image, hotx, hoty);
    dirty |= boundingRect();
    if (enable) {
        const QVector<QRect> rects = dirty.rects();
        for (int i = 0; i < rects.size(); ++i)
            setDirty(rects.at(i));
    }
}

void QVNCCursor::move(int x, int y)
{
    QRegion dirty = boundingRect();
    QScreenCursor::move(x, y);
    dirty |= boundingRect();
    if (enable) {
        const QVector<QRect> rects = dirty.rects();
        for (int i = 0; i < rects.size(); ++i)
            setDirty(rects.at(i));
    }
}

#endif // QT_NO_QWS_CURSOR

QVNCScreenPrivate::QVNCScreenPrivate(QVNCScreen *parent)
    : dpiX(72), dpiY(72), doOnScreenSurface(false), refreshRate(25),
      vncServer(0), subscreen(0), q_ptr(parent)
{
#ifndef QT_NO_QWS_MULTIPROCESS
    shm = 0;
#endif
#ifndef QT_NO_QWS_SIGNALHANDLER
    QWSSignalHandler::instance()->addObject(this);
#endif
}

QVNCScreenPrivate::~QVNCScreenPrivate()
{
#ifndef QT_NO_QWS_MULTIPROCESS
    if (shm) {
        if (QApplication::type() == QApplication::GuiServer)
            shm->destroy();
        delete shm;
    }
#else
    if (!subscreen) {
        delete[] q_ptr->data;
        q_ptr->data = 0;
    }
#endif
    delete subscreen;
}

void QVNCScreenPrivate::configure()
{
    if (subscreen) {
        q_ptr->d = subscreen->depth();
        q_ptr->w = subscreen->width();
        q_ptr->h = subscreen->height();
        q_ptr->dw = subscreen->deviceWidth();
        q_ptr->dh = subscreen->deviceHeight();
        q_ptr->lstep = subscreen->linestep();
        q_ptr->data = subscreen->base();
        q_ptr->physWidth = subscreen->physicalWidth();
        q_ptr->physHeight = subscreen->physicalHeight();

        q_ptr->setPixelFormat(subscreen->pixelFormat());
        q_ptr->setOffset(subscreen->offset());
    } else {
        q_ptr->lstep = (q_ptr->dw * q_ptr->d + 7) / 8;
        q_ptr->size = q_ptr->h * q_ptr->lstep;
        q_ptr->mapsize = q_ptr->size;
        q_ptr->physWidth = qRound(q_ptr->dw * 25.4 / dpiX);
        q_ptr->physHeight = qRound(q_ptr->dh * 25.4 / dpiY);

        switch (q_ptr->d) {
        case 1:
            q_ptr->setPixelFormat(QImage::Format_Mono); //### LSB???
            break;
        case 8:
            q_ptr->setPixelFormat(QImage::Format_Indexed8);
            break;
        case 16:
            q_ptr->setPixelFormat(QImage::Format_RGB16);
            break;
        case 32:
            q_ptr->setPixelFormat(QImage::Format_ARGB32_Premultiplied);
            break;
        }

#ifndef QT_NO_QWS_MULTIPROCESS
        if (shm) {
            if (QApplication::type() == QApplication::GuiServer)
                shm->destroy();
            delete shm;
        }
        shm = new QSharedMemory(q_ptr->size, qws_qtePipeFilename(),
                                q_ptr->displayId);
        if (!shm->create())
            qDebug("QVNCScreen could not create shared memory");
        if (!shm->attach())
            qDebug("QVNCScreen could not attach to shared memory");
        q_ptr->data = reinterpret_cast<uchar*>(shm->base());
#else
        if (q_ptr->data)
            delete[] q_ptr->data;
        q_ptr->data = new uchar[q_ptr->size];
#endif
    }

}

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

static const struct {
    int keysym;
    int keycode;
} keyMap[] = {
    { 0xff08, Qt::Key_Backspace },
    { 0xff09, Qt::Key_Tab       },
    { 0xff0d, Qt::Key_Return    },
    { 0xff1b, Qt::Key_Escape    },
    { 0xff63, Qt::Key_Insert    },
    { 0xffff, Qt::Key_Delete    },
    { 0xff50, Qt::Key_Home      },
    { 0xff57, Qt::Key_End       },
    { 0xff55, Qt::Key_PageUp    },
    { 0xff56, Qt::Key_PageDown  },
    { 0xff51, Qt::Key_Left      },
    { 0xff52, Qt::Key_Up        },
    { 0xff53, Qt::Key_Right     },
    { 0xff54, Qt::Key_Down      },
    { 0xffbe, Qt::Key_F1        },
    { 0xffbf, Qt::Key_F2        },
    { 0xffc0, Qt::Key_F3        },
    { 0xffc1, Qt::Key_F4        },
    { 0xffc2, Qt::Key_F5        },
    { 0xffc3, Qt::Key_F6        },
    { 0xffc4, Qt::Key_F7        },
    { 0xffc5, Qt::Key_F8        },
    { 0xffc6, Qt::Key_F9        },
    { 0xffc7, Qt::Key_F10       },
    { 0xffc8, Qt::Key_F11       },
    { 0xffc9, Qt::Key_F12       },
    { 0xffe1, Qt::Key_Shift     },
    { 0xffe2, Qt::Key_Shift     },
    { 0xffe3, Qt::Key_Control   },
    { 0xffe4, Qt::Key_Control   },
    { 0xffe7, Qt::Key_Meta      },
    { 0xffe8, Qt::Key_Meta      },
    { 0xffe9, Qt::Key_Alt       },
    { 0xffea, Qt::Key_Alt       },
    { 0, 0 }
};

void QRfbRect::read(QTcpSocket *s)
{
    quint16 buf[4];
    s->read((char*)buf, 8);
    x = ntohs(buf[0]);
    y = ntohs(buf[1]);
    w = ntohs(buf[2]);
    h = ntohs(buf[3]);
}

void QRfbRect::write(QTcpSocket *s) const
{
    quint16 buf[4];
    buf[0] = htons(x);
    buf[1] = htons(y);
    buf[2] = htons(w);
    buf[3] = htons(h);
    s->write((char*)buf, 8);
}

void QRfbPixelFormat::read(QTcpSocket *s)
{
    char buf[16];
    s->read(buf, 16);
    bitsPerPixel = buf[0];
    depth = buf[1];
    bigEndian = buf[2];
    trueColor = buf[3];

    quint16 a = ntohs(*(quint16 *)(buf + 4));
    redBits = 0;
    while (a) { a >>= 1; redBits++; }

    a = ntohs(*(quint16 *)(buf + 6));
    greenBits = 0;
    while (a) { a >>= 1; greenBits++; }

    a = ntohs(*(quint16 *)(buf + 8));
    blueBits = 0;
    while (a) { a >>= 1; blueBits++; }

    redShift = buf[10];
    greenShift = buf[11];
    blueShift = buf[12];
}

void QRfbPixelFormat::write(QTcpSocket *s)
{
    char buf[16];
    buf[0] = bitsPerPixel;
    buf[1] = depth;
    buf[2] = bigEndian;
    buf[3] = trueColor;

    quint16 a = 0;
    for (int i = 0; i < redBits; i++) a = (a << 1) | 1;
    *(quint16 *)(buf + 4) = htons(a);

    a = 0;
    for (int i = 0; i < greenBits; i++) a = (a << 1) | 1;
    *(quint16 *)(buf + 6) = htons(a);

    a = 0;
    for (int i = 0; i < blueBits; i++) a = (a << 1) | 1;
    *(quint16 *)(buf + 8) = htons(a);

    buf[10] = redShift;
    buf[11] = greenShift;
    buf[12] = blueShift;
    s->write(buf, 16);
}


void QRfbServerInit::setName(const char *n)
{
    delete[] name;
    name = new char [strlen(n) + 1];
    strcpy(name, n);
}

void QRfbServerInit::read(QTcpSocket *s)
{
    s->read((char *)&width, 2);
    width = ntohs(width);
    s->read((char *)&height, 2);
    height = ntohs(height);
    format.read(s);

    quint32 len;
    s->read((char *)&len, 4);
    len = ntohl(len);

    name = new char [len + 1];
    s->read(name, len);
    name[len] = '\0';
}

void QRfbServerInit::write(QTcpSocket *s)
{
    quint16 t = htons(width);
    s->write((char *)&t, 2);
    t = htons(height);
    s->write((char *)&t, 2);
    format.write(s);
    quint32 len = strlen(name);
    len = htonl(len);
    s->write((char *)&len, 4);
    s->write(name, strlen(name));
}

bool QRfbSetEncodings::read(QTcpSocket *s)
{
    if (s->bytesAvailable() < 3)
        return false;

    char tmp;
    s->read(&tmp, 1);        // padding
    s->read((char *)&count, 2);
    count = ntohs(count);

    return true;
}

bool QRfbFrameBufferUpdateRequest::read(QTcpSocket *s)
{
    if (s->bytesAvailable() < 9)
        return false;

    s->read(&incremental, 1);
    rect.read(s);

    return true;
}

bool QRfbKeyEvent::read(QTcpSocket *s)
{
    if (s->bytesAvailable() < 7)
        return false;

    s->read(&down, 1);
    quint16 tmp;
    s->read((char *)&tmp, 2);  // padding

    quint32 key;
    s->read((char *)&key, 4);
    key = ntohl(key);

    unicode = 0;
    keycode = 0;
    int i = 0;
    while (keyMap[i].keysym && !keycode) {
        if (keyMap[i].keysym == (int)key)
            keycode = keyMap[i].keycode;
        i++;
    }
    if (!keycode) {
        if (key <= 0xff) {
            unicode = key;
            if (key >= 'a' && key <= 'z')
                keycode = Qt::Key_A + key - 'a';
            else if (key >= ' ' && key <= '~')
                keycode = Qt::Key_Space + key - ' ';
        }
    }

    return true;
}

bool QRfbPointerEvent::read(QTcpSocket *s)
{
    if (s->bytesAvailable() < 5)
        return false;

    char buttonMask;
    s->read(&buttonMask, 1);
    buttons = 0;
    if (buttonMask & 1)
        buttons |= Qt::LeftButton;
    if (buttonMask & 2)
        buttons |= Qt::MidButton;
    if (buttonMask & 4)
        buttons |= Qt::RightButton;

    quint16 tmp;
    s->read((char *)&tmp, 2);
    x = ntohs(tmp);
    s->read((char *)&tmp, 2);
    y = ntohs(tmp);

    return true;
}

bool QRfbClientCutText::read(QTcpSocket *s)
{
    if (s->bytesAvailable() < 7)
        return false;

    char tmp[3];
    s->read(tmp, 3);        // padding
    s->read((char *)&length, 4);
    length = ntohl(length);

    return true;
}

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

QVNCServer::QVNCServer(QVNCScreen *screen)
    : qvnc_screen(screen)
{
    init(5900);
}