QLinuxFbIntegration Class Reference

#include <qlinuxfbintegration.h>

Inheritance diagram for QLinuxFbIntegration:

Public Functions
QPixmapData *	createPixmapData (QPixmapData::PixelType type) const
	Factory function for QPixmapData. More...
QPlatformWindow *	createPlatformWindow (QWidget *widget, WId WinId) const
	Factory function for QPlatformWindow. More...
QWindowSurface *	createWindowSurface (QWidget *widget, WId WinId) const
	Factory function for QWindowSurface. More...
QPlatformFontDatabase *	fontDatabase () const
	Accessor for the platform integrations fontdatabase. More...
bool	hasCapability (QPlatformIntegration::Capability cap) const
	QLinuxFbIntegration ()
QList< QPlatformScreen * >	screens () const
	Accessor function to a list of all the screens on the current system. More...
	~QLinuxFbIntegration ()
Public Functions inherited from QPlatformIntegration
virtual QPlatformClipboard *	clipboard () const
	Accessor for the platform integrations clipboard. More...
virtual QPlatformEventLoopIntegration *	createEventLoopIntegration () const
	Factory function for the eventloop integration interface. More...
virtual QPixmap	grabWindow (WId window, int x, int y, int width, int height) const
	This function is called when Qt needs to be able to grab the content of a window. More...
virtual bool	isVirtualDesktop ()
	Returns if the current windowing system configuration defines all the screens to be one desktop(virtual desktop), or if each screen is a desktop of its own. More...
virtual void	moveToScreen (QWidget *window, int screen)
	This function is called when a QWidget is displayed on screen, or the QWidget is to be displayed on a new screen. More...
virtual QPlatformNativeInterface *	nativeInterface () const
virtual	~QPlatformIntegration ()

Private Types
enum	PixelType { NormalPixel, BGRPixel }

Private Functions
void	blank (bool on)
bool	connect (const QString &displaySpec)
void	createPalette (fb_cmap &cmap, fb_var_screeninfo &vinfo, fb_fix_screeninfo &finfo)
bool	initDevice ()
void	setPixelFormat (struct fb_var_screeninfo)

Properties
int	cacheStart
bool	canaccel
int	d
QLinuxFbIntegrationPrivate *	d_ptr
uchar *	data
int	dataoffset
int	dh
int	displayId
int	dw
QPlatformFontDatabase *	fontDb
bool	grayscale
int	h
int	lstep
int	mapsize
QLinuxFbScreen *	mPrimaryScreen
QList< QPlatformScreen * >	mScreens
int	physHeight
int	physWidth
PixelType	pixeltype
QRgb	screenclut [256]
int	screencols
QImage::Format	screenFormat
int	size
int	w

Additional Inherited Members
Public Types inherited from QPlatformIntegration
enum	Capability { ThreadedPixmaps = 1, OpenGL = 2 }

Detailed Description

Definition at line 74 of file qlinuxfbintegration.h.

Enumerations

PixelType

enum QLinuxFbIntegration::PixelType

private

Enumerator
NormalPixel
BGRPixel

Definition at line 95 of file qlinuxfbintegration.h.

{ NormalPixel, BGRPixel };

Constructors and Destructors

QLinuxFbIntegration()

QLinuxFbIntegration::QLinuxFbIntegration

(

)

Definition at line 159 of file qlinuxfbintegration.cpp.

    :fontDb(new QGenericUnixFontDatabase())
{
    d_ptr = new QLinuxFbIntegrationPrivate();

    // XXX
    QString displaySpec = QString::fromLatin1(qgetenv("QWS_DISPLAY"));

    if (!connect(displaySpec))
        qFatal("QLinuxFbIntegration: could not initialize screen");
    initDevice();

    // Create a QImage directly on the screen's framebuffer.
    // This is the blit target for copying windows to the screen.
    mPrimaryScreen = new QLinuxFbScreen(data, w, h, lstep,
                                                      screenFormat);
    mPrimaryScreen->setPhysicalSize(QSize(physWidth, physHeight));
    mScreens.append(mPrimaryScreen);
}

~QLinuxFbIntegration()

QLinuxFbIntegration::~QLinuxFbIntegration

(

)

Definition at line 179 of file qlinuxfbintegration.cpp.

{
    delete mPrimaryScreen;
    delete d_ptr;
}

Functions

blank()

void QLinuxFbIntegration::blank ( bool  on )

private

Definition at line 760 of file qlinuxfbintegration.cpp.

Referenced by initDevice().

{
    if (d_ptr->blank == on)
        return;

#if defined(QT_QWS_IPAQ)
    if (on)
        system("apm -suspend");
#else
    if (d_ptr->fd == -1)
        return;
// Some old kernel versions don't have this.  These defines should go
// away eventually
#if defined(FBIOBLANK)
#if defined(VESA_POWERDOWN) && defined(VESA_NO_BLANKING)
    ioctl(d_ptr->fd, FBIOBLANK, on ? VESA_POWERDOWN : VESA_NO_BLANKING);
#else
    ioctl(d_ptr->fd, FBIOBLANK, on ? 1 : 0);
#endif
#endif
#endif

    d_ptr->blank = on;
}

connect()

bool QLinuxFbIntegration::connect ( const QString &  displaySpec )

private

Definition at line 185 of file qlinuxfbintegration.cpp.

Referenced by QLinuxFbIntegration().

{
    const QStringList args = displaySpec.split(QLatin1Char(':'));

    if (args.contains(QLatin1String("nographicsmodeswitch")))
        d_ptr->doGraphicsMode = false;

#ifdef QT_QWS_DEPTH_GENERIC
    if (args.contains(QLatin1String("genericcolors")))
        d_ptr->doGenericColors = true;
#endif

    QRegExp ttyRegExp(QLatin1String("tty=(.*)"));
    if (args.indexOf(ttyRegExp) != -1)
        d_ptr->ttyDevice = ttyRegExp.cap(1);

#if 0
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
#ifndef QT_QWS_FRAMEBUFFER_LITTLE_ENDIAN
    if (args.contains(QLatin1String("littleendian")))
#endif
        QScreen::setFrameBufferLittleEndian(true);
#endif
#endif

    // Check for explicitly specified device
    const int len = 8; // "/dev/fbx"
    int m = displaySpec.indexOf(QLatin1String("/dev/fb"));

    QString dev;
    if (m > 0)
        dev = displaySpec.mid(m, len);
    else
        dev = QLatin1String("/dev/fb0");

    if (access(dev.toLatin1().constData(), R_OK|W_OK) == 0)
        d_ptr->fd = QT_OPEN(dev.toLatin1().constData(), O_RDWR);
    if (d_ptr->fd == -1) {
        if (access(dev.toLatin1().constData(), R_OK) == 0)
            d_ptr->fd = QT_OPEN(dev.toLatin1().constData(), O_RDONLY);
        if (d_ptr->fd == 1) {
            qWarning("Error opening framebuffer device %s", qPrintable(dev));
            return false;
        }
    }

    fb_fix_screeninfo finfo;
    fb_var_screeninfo vinfo;
    //#######################
    // Shut up Valgrind
    memset(&vinfo, 0, sizeof(vinfo));
    memset(&finfo, 0, sizeof(finfo));
    //#######################

    /* Get fixed screen information */
    if (d_ptr->fd != -1 && ioctl(d_ptr->fd, FBIOGET_FSCREENINFO, &finfo)) {
        perror("QLinuxFbIntegration::connect");
        qWarning("Error reading fixed information");
        return false;
    }

    if (finfo.type == FB_TYPE_VGA_PLANES) {
        qWarning("VGA16 video mode not supported");
        return false;
    }

    /* Get variable screen information */
    if (d_ptr->fd != -1 && ioctl(d_ptr->fd, FBIOGET_VSCREENINFO, &vinfo)) {
        perror("QLinuxFbIntegration::connect");
        qWarning("Error reading variable information");
        return false;
    }

    grayscale = vinfo.grayscale;
    d = vinfo.bits_per_pixel;
    if (d == 24) {
        d = vinfo.red.length + vinfo.green.length + vinfo.blue.length;
        if (d <= 0)
            d = 24; // reset if color component lengths are not reported
    } else if (d == 16) {
        d = vinfo.red.length + vinfo.green.length + vinfo.blue.length;
        if (d <= 0)
            d = 16;
    }
    lstep = finfo.line_length;

    int xoff = vinfo.xoffset;
    int yoff = vinfo.yoffset;
    const char* qwssize;
    if((qwssize=::getenv("QWS_SIZE")) && sscanf(qwssize,"%dx%d",&w,&h)==2) {
        if (d_ptr->fd != -1) {
            if ((uint)w > vinfo.xres) w = vinfo.xres;
            if ((uint)h > vinfo.yres) h = vinfo.yres;
        }
        dw=w;
        dh=h;
        int xxoff, yyoff;
        if (sscanf(qwssize, "%*dx%*d+%d+%d", &xxoff, &yyoff) == 2) {
            if (xxoff < 0 || xxoff + w > (int)(vinfo.xres))
                xxoff = vinfo.xres - w;
            if (yyoff < 0 || yyoff + h > (int)(vinfo.yres))
                yyoff = vinfo.yres - h;
            xoff += xxoff;
            yoff += yyoff;
        } else {
            xoff += (vinfo.xres - w)/2;
            yoff += (vinfo.yres - h)/2;
        }
    } else {
        dw=w=vinfo.xres;
        dh=h=vinfo.yres;
    }

    if (w == 0 || h == 0) {
        qWarning("QLinuxFbIntegration::connect(): Unable to find screen geometry, "
                 "will use 320x240.");
        dw = w = 320;
        dh = h = 240;
    }

    setPixelFormat(vinfo);

    // Handle display physical size spec.
    QStringList displayArgs = displaySpec.split(QLatin1Char(':'));
    QRegExp mmWidthRx(QLatin1String("mmWidth=?(\\d+)"));
    int dimIdxW = displayArgs.indexOf(mmWidthRx);
    QRegExp mmHeightRx(QLatin1String("mmHeight=?(\\d+)"));
    int dimIdxH = displayArgs.indexOf(mmHeightRx);
    if (dimIdxW >= 0) {
        mmWidthRx.exactMatch(displayArgs.at(dimIdxW));
        physWidth = mmWidthRx.cap(1).toInt();
        if (dimIdxH < 0)
            physHeight = dh*physWidth/dw;
    }
    if (dimIdxH >= 0) {
        mmHeightRx.exactMatch(displayArgs.at(dimIdxH));
        physHeight = mmHeightRx.cap(1).toInt();
        if (dimIdxW < 0)
            physWidth = dw*physHeight/dh;
    }
    if (dimIdxW < 0 && dimIdxH < 0) {
        if (vinfo.width != 0 && vinfo.height != 0
            && vinfo.width != UINT_MAX && vinfo.height != UINT_MAX) {
            physWidth = vinfo.width;
            physHeight = vinfo.height;
        } else {
            const int dpi = 72;
            physWidth = qRound(dw * 25.4 / dpi);
            physHeight = qRound(dh * 25.4 / dpi);
        }
    }

    dataoffset = yoff * lstep + xoff * d / 8;
    //qDebug("Using %dx%dx%d screen",w,h,d);

    /* Figure out the size of the screen in bytes */
    size = h * lstep;

    mapsize = finfo.smem_len;

    data = (unsigned char *)-1;
    if (d_ptr->fd != -1)
        data = (unsigned char *)mmap(0, mapsize, PROT_READ | PROT_WRITE,
                                     MAP_SHARED, d_ptr->fd, 0);

    if ((long)data == -1) {
        perror("QLinuxFbIntegration::connect");
        qWarning("Error: failed to map framebuffer device to memory.");
        return false;
    } else {
        data += dataoffset;
    }

#if 0
    canaccel = useOffscreen();
    if(canaccel)
        setupOffScreen();
#endif
    canaccel = false;

    // Now read in palette
    if((vinfo.bits_per_pixel==8) || (vinfo.bits_per_pixel==4)) {
        screencols= (vinfo.bits_per_pixel==8) ? 256 : 16;
        int loopc;
        fb_cmap startcmap;
        startcmap.start=0;
        startcmap.len=screencols;
        startcmap.red=(unsigned short int *)
                 malloc(sizeof(unsigned short int)*screencols);
        startcmap.green=(unsigned short int *)
                   malloc(sizeof(unsigned short int)*screencols);
        startcmap.blue=(unsigned short int *)
                  malloc(sizeof(unsigned short int)*screencols);
        startcmap.transp=(unsigned short int *)
                    malloc(sizeof(unsigned short int)*screencols);
        if (d_ptr->fd == -1 || ioctl(d_ptr->fd, FBIOGETCMAP, &startcmap)) {
            perror("QLinuxFbIntegration::connect");
            qWarning("Error reading palette from framebuffer, using default palette");
            createPalette(startcmap, vinfo, finfo);
        }
        int bits_used = 0;
        for(loopc=0;loopc<screencols;loopc++) {
            screenclut[loopc]=qRgb(startcmap.red[loopc] >> 8,
                                   startcmap.green[loopc] >> 8,
                                   startcmap.blue[loopc] >> 8);
            bits_used |= startcmap.red[loopc]
                         | startcmap.green[loopc]
                         | startcmap.blue[loopc];
        }
        // WORKAROUND: Some framebuffer drivers only return 8 bit
        // color values, so we need to not bit shift them..
        if ((bits_used & 0x00ff) && !(bits_used & 0xff00)) {
            for(loopc=0;loopc<screencols;loopc++) {
                screenclut[loopc] = qRgb(startcmap.red[loopc],
                                         startcmap.green[loopc],
                                         startcmap.blue[loopc]);
            }
            qWarning("8 bits cmap returned due to faulty FB driver, colors corrected");
        }
        free(startcmap.red);
        free(startcmap.green);
        free(startcmap.blue);
        free(startcmap.transp);
    } else {
        screencols=0;
    }

    return true;
}

createPalette()

void QLinuxFbIntegration::createPalette ( fb_cmap &  cmap, fb_var_screeninfo &  vinfo, fb_fix_screeninfo &  finfo  )

private

Definition at line 630 of file qlinuxfbintegration.cpp.

Referenced by connect(), and initDevice().

{
    if((vinfo.bits_per_pixel==8) || (vinfo.bits_per_pixel==4)) {
        screencols= (vinfo.bits_per_pixel==8) ? 256 : 16;
        cmap.start=0;
        cmap.len=screencols;
        cmap.red=(unsigned short int *)
                 malloc(sizeof(unsigned short int)*screencols);
        cmap.green=(unsigned short int *)
                   malloc(sizeof(unsigned short int)*screencols);
        cmap.blue=(unsigned short int *)
                  malloc(sizeof(unsigned short int)*screencols);
        cmap.transp=(unsigned short int *)
                    malloc(sizeof(unsigned short int)*screencols);

        if (screencols==16) {
            if (finfo.type == FB_TYPE_PACKED_PIXELS) {
                // We'll setup a grayscale cmap for 4bpp linear
                int val = 0;
                for (int idx = 0; idx < 16; ++idx, val += 17) {
                    cmap.red[idx] = (val<<8)|val;
                    cmap.green[idx] = (val<<8)|val;
                    cmap.blue[idx] = (val<<8)|val;
                    screenclut[idx]=qRgb(val, val, val);
                }
            } else {
                // Default 16 colour palette
                // Green is now trolltech green so certain images look nicer
                //                             black  d_gray l_gray white  red  green  blue cyan magenta yellow
                unsigned char reds[16]   = { 0x00, 0x7F, 0xBF, 0xFF, 0xFF, 0xA2, 0x00, 0xFF, 0xFF, 0x00, 0x7F, 0x7F, 0x00, 0x00, 0x00, 0x82 };
                unsigned char greens[16] = { 0x00, 0x7F, 0xBF, 0xFF, 0x00, 0xC5, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x00, 0x7F, 0x7F, 0x7F };
                unsigned char blues[16]  = { 0x00, 0x7F, 0xBF, 0xFF, 0x00, 0x11, 0xFF, 0x00, 0xFF, 0xFF, 0x00, 0x7F, 0x7F, 0x7F, 0x00, 0x00 };

                for (int idx = 0; idx < 16; ++idx) {
                    cmap.red[idx] = ((reds[idx]) << 8)|reds[idx];
                    cmap.green[idx] = ((greens[idx]) << 8)|greens[idx];
                    cmap.blue[idx] = ((blues[idx]) << 8)|blues[idx];
                    cmap.transp[idx] = 0;
                    screenclut[idx]=qRgb(reds[idx], greens[idx], blues[idx]);
                }
            }
        } else {
            if (grayscale) {
                // Build grayscale palette
                int i;
                for(i=0;i<screencols;++i) {
                    int bval = screencols == 256 ? i : (i << 4);
                    ushort val = (bval << 8) | bval;
                    cmap.red[i] = val;
                    cmap.green[i] = val;
                    cmap.blue[i] = val;
                    cmap.transp[i] = 0;
                    screenclut[i] = qRgb(bval,bval,bval);
                }
            } else {
                // 6x6x6 216 color cube
                int idx = 0;
                for(int ir = 0x0; ir <= 0xff; ir+=0x33) {
                    for(int ig = 0x0; ig <= 0xff; ig+=0x33) {
                        for(int ib = 0x0; ib <= 0xff; ib+=0x33) {
                            cmap.red[idx] = (ir << 8)|ir;
                            cmap.green[idx] = (ig << 8)|ig;
                            cmap.blue[idx] = (ib << 8)|ib;
                            cmap.transp[idx] = 0;
                            screenclut[idx]=qRgb(ir, ig, ib);
                            ++idx;
                        }
                    }
                }
                // Fill in rest with 0
                for (int loopc=0; loopc<40; ++loopc) {
                    screenclut[idx]=0;
                    ++idx;
                }
                screencols=idx;
            }
        }
    } else if(finfo.visual==FB_VISUAL_DIRECTCOLOR) {
        cmap.start=0;
        int rbits=0,gbits=0,bbits=0;
        switch (vinfo.bits_per_pixel) {
        case 8:
            rbits=vinfo.red.length;
            gbits=vinfo.green.length;
            bbits=vinfo.blue.length;
            if(rbits==0 && gbits==0 && bbits==0) {
                // cyber2000 driver bug hack
                rbits=3;
                gbits=3;
                bbits=2;
            }
            break;
        case 15:
            rbits=5;
            gbits=5;
            bbits=5;
            break;
        case 16:
            rbits=5;
            gbits=6;
            bbits=5;
            break;
        case 18:
        case 19:
            rbits=6;
            gbits=6;
            bbits=6;
            break;
        case 24: case 32:
            rbits=gbits=bbits=8;
            break;
        }
        screencols=cmap.len=1<<qMax(rbits,qMax(gbits,bbits));
        cmap.red=(unsigned short int *)
                 malloc(sizeof(unsigned short int)*256);
        cmap.green=(unsigned short int *)
                   malloc(sizeof(unsigned short int)*256);
        cmap.blue=(unsigned short int *)
                  malloc(sizeof(unsigned short int)*256);
        cmap.transp=(unsigned short int *)
                    malloc(sizeof(unsigned short int)*256);
        for(unsigned int i = 0x0; i < cmap.len; i++) {
            cmap.red[i] = i*65535/((1<<rbits)-1);
            cmap.green[i] = i*65535/((1<<gbits)-1);
            cmap.blue[i] = i*65535/((1<<bbits)-1);
            cmap.transp[i] = 0;
        }
    }
}

createPixmapData()

QPixmapData * QLinuxFbIntegration::createPixmapData ( QPixmapData::PixelType  type ) const

virtual

Factory function for QPixmapData.

PixelType can be either PixmapType or BitmapType.

See also

QPixmapData

Implements QPlatformIntegration.

Definition at line 794 of file qlinuxfbintegration.cpp.

{
    return new QRasterPixmapData(type);
}

createPlatformWindow()

QPlatformWindow * QLinuxFbIntegration::createPlatformWindow ( QWidget *  widget, WId  winId  ) const

virtual

Factory function for QPlatformWindow.

The widget parameter is a pointer to the top level widget(tlw) which the QPlatformWindow is suppose to be created for. The WId handle is actually never used, but there for future reference. Its purpose is if it is going to be possible to create QPlatformWindows on existing WId.

All tlw has to have a QPlatformWindow, and it will be created when the QPlatformWindow is set to be visible for the first time. If the tlw's window flags are changed, or if the tlw's QPlatformWindowFormat is changed, then the tlw's QPlatformWindow is deleted and a new one is created.

See also

QPlatformWindow, QPlatformWindowFormat

createWindowSurface(QWidget *widget, WId winId) const

Implements QPlatformIntegration.

Definition at line 806 of file qlinuxfbintegration.cpp.

{
    QFbWindow *w = new QFbWindow(widget);
    mPrimaryScreen->addWindow(w);
    return w;
}

createWindowSurface()

QWindowSurface * QLinuxFbIntegration::createWindowSurface ( QWidget *  widget, WId  winId  ) const

virtual

Factory function for QWindowSurface.

The QWidget parameter is a pointer to the top level widget(tlw) the window surface is created for. A QPlatformWindow is always created before the QWindowSurface for tlw where the widget also requires a WindowSurface. It is possible to create top level QWidgets without a QWindowSurface by specifying QPlatformWindowFormat::setWindowSurface(false) for the tlw QPlatformWindowFormat.

See also

QWindowSurface

createPlatformWindow(QWidget *widget, WId winId = 0) const

Implements QPlatformIntegration.

Definition at line 799 of file qlinuxfbintegration.cpp.

{
    QFbWindowSurface * surface =
        new QFbWindowSurface(mPrimaryScreen, widget);
    return surface;
}

fontDatabase()

QPlatformFontDatabase * QLinuxFbIntegration::fontDatabase ( ) const

virtual

Accessor for the platform integrations fontdatabase.

Default implementation returns a default QPlatformFontDatabase.

See also

QPlatformFontDatabase

Reimplemented from QPlatformIntegration.

Definition at line 813 of file qlinuxfbintegration.cpp.

{
    return fontDb;
}

hasCapability()

bool QLinuxFbIntegration::hasCapability ( QPlatformIntegration::Capability  cap ) const

virtual

Reimplemented from QPlatformIntegration.

Definition at line 785 of file qlinuxfbintegration.cpp.

{
    switch (cap) {
    case ThreadedPixmaps: return true;
    default: return QPlatformIntegration::hasCapability(cap);
    }
}

initDevice()

bool QLinuxFbIntegration::initDevice ( )

private

Definition at line 415 of file qlinuxfbintegration.cpp.

Referenced by QLinuxFbIntegration().

{
    d_ptr->openTty();

    // Grab current mode so we can reset it
    fb_var_screeninfo vinfo;
    fb_fix_screeninfo finfo;
    //#######################
    // Shut up Valgrind
    memset(&vinfo, 0, sizeof(vinfo));
    memset(&finfo, 0, sizeof(finfo));
    //#######################

    if (ioctl(d_ptr->fd, FBIOGET_VSCREENINFO, &vinfo)) {
        perror("QLinuxFbScreen::initDevice");
        qFatal("Error reading variable information in card init");
        return false;
    }

#ifdef DEBUG_VINFO
    qDebug("Greyscale %d",vinfo.grayscale);
    qDebug("Nonstd %d",vinfo.nonstd);
    qDebug("Red %d %d %d",vinfo.red.offset,vinfo.red.length,
           vinfo.red.msb_right);
    qDebug("Green %d %d %d",vinfo.green.offset,vinfo.green.length,
           vinfo.green.msb_right);
    qDebug("Blue %d %d %d",vinfo.blue.offset,vinfo.blue.length,
           vinfo.blue.msb_right);
    qDebug("Transparent %d %d %d",vinfo.transp.offset,vinfo.transp.length,
           vinfo.transp.msb_right);
#endif

    d_ptr->startupw=vinfo.xres;
    d_ptr->startuph=vinfo.yres;
    d_ptr->startupd=vinfo.bits_per_pixel;
    grayscale = vinfo.grayscale;

    if (ioctl(d_ptr->fd, FBIOGET_FSCREENINFO, &finfo)) {
        perror("QLinuxFbScreen::initDevice");
        qCritical("Error reading fixed information in card init");
        // It's not an /error/ as such, though definitely a bad sign
        // so we return true
        return true;
    }

#ifdef __i386__
    // Now init mtrr
    if(!::getenv("QWS_NOMTRR")) {
        int mfd=QT_OPEN("/proc/mtrr",O_WRONLY,0);
        // MTRR entry goes away when file is closed - i.e.
        // hopefully when QWS is killed
        if(mfd != -1) {
            mtrr_sentry sentry;
            sentry.base=(unsigned long int)finfo.smem_start;
            //qDebug("Physical framebuffer address %p",(void*)finfo.smem_start);
            // Size needs to be in 4k chunks, but that's not always
            // what we get thanks to graphics card registers. Write combining
            // these is Not Good, so we write combine what we can
            // (which is not much - 4 megs on an 8 meg card, it seems)
            unsigned int size=finfo.smem_len;
            size=size >> 22;
            size=size << 22;
            sentry.size=size;
            sentry.type=MTRR_TYPE_WRCOMB;
            if(ioctl(mfd,MTRRIOC_ADD_ENTRY,&sentry)==-1) {
                //printf("Couldn't add mtrr entry for %lx %lx, %s\n",
                //sentry.base,sentry.size,strerror(errno));
            }
        }

        // Should we close mfd here?
        //QT_CLOSE(mfd);
    }
#endif
    if ((vinfo.bits_per_pixel==8) || (vinfo.bits_per_pixel==4) || (finfo.visual==FB_VISUAL_DIRECTCOLOR))
    {
        fb_cmap cmap;
        createPalette(cmap, vinfo, finfo);
        if (ioctl(d_ptr->fd, FBIOPUTCMAP, &cmap)) {
            perror("QLinuxFbScreen::initDevice");
            qWarning("Error writing palette to framebuffer");
        }
        free(cmap.red);
        free(cmap.green);
        free(cmap.blue);
        free(cmap.transp);
    }

#if 0
    if (canaccel) {
        *entryp=0;
        *lowest = mapsize;
        insert_entry(*entryp, *lowest, *lowest);  // dummy entry to mark start
    }

    shared->fifocount = 0;
    shared->buffer_offset = 0xffffffff;  // 0 would be a sensible offset (screen)
    shared->linestep = 0;
    shared->cliptop = 0xffffffff;
    shared->clipleft = 0xffffffff;
    shared->clipright = 0xffffffff;
    shared->clipbottom = 0xffffffff;
    shared->rop = 0xffffffff;
#endif

#ifdef QT_QWS_DEPTH_GENERIC
    if (pixelFormat() == QImage::Format_Invalid && screencols == 0
        && d_ptr->doGenericColors)
    {
        qt_set_generic_blit(this, vinfo.bits_per_pixel,
                            vinfo.red.length, vinfo.green.length,
                            vinfo.blue.length, vinfo.transp.length,
                            vinfo.red.offset, vinfo.green.offset,
                            vinfo.blue.offset, vinfo.transp.offset);
    }
#endif

#if 0
#ifndef QT_NO_QWS_CURSOR
    QScreenCursor::initSoftwareCursor();
#endif
#endif
    blank(false);

    return true;
}

screens()

QList<QPlatformScreen *> QLinuxFbIntegration::screens ( ) const

inlinevirtual

Accessor function to a list of all the screens on the current system.

The screen with the index == 0 is the default/main screen.

Implements QPlatformIntegration.

Definition at line 86 of file qlinuxfbintegration.h.

{ return mScreens; }

setPixelFormat()

void QLinuxFbIntegration::setPixelFormat ( struct fb_var_screeninfo  info )

private

Definition at line 542 of file qlinuxfbintegration.cpp.

Referenced by connect().

{
    const fb_bitfield rgba[4] = { info.red, info.green,
                                  info.blue, info.transp };

    QImage::Format format = QImage::Format_Invalid;

    switch (d) {
    case 32: {
        const fb_bitfield argb8888[4] = {{16, 8, 0}, {8, 8, 0},
                                         {0, 8, 0}, {24, 8, 0}};
        const fb_bitfield abgr8888[4] = {{0, 8, 0}, {8, 8, 0},
                                         {16, 8, 0}, {24, 8, 0}};
        if (memcmp(rgba, argb8888, 4 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_ARGB32;
        } else if (memcmp(rgba, argb8888, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB32;
        } else if (memcmp(rgba, abgr8888, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB32;
            pixeltype = BGRPixel;
        }
        break;
    }
    case 24: {
        const fb_bitfield rgb888[4] = {{16, 8, 0}, {8, 8, 0},
                                       {0, 8, 0}, {0, 0, 0}};
        const fb_bitfield bgr888[4] = {{0, 8, 0}, {8, 8, 0},
                                       {16, 8, 0}, {0, 0, 0}};
        if (memcmp(rgba, rgb888, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB888;
        } else if (memcmp(rgba, bgr888, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB888;
            pixeltype = BGRPixel;
        }
        break;
    }
    case 18: {
        const fb_bitfield rgb666[4] = {{12, 6, 0}, {6, 6, 0},
                                       {0, 6, 0}, {0, 0, 0}};
        if (memcmp(rgba, rgb666, 3 * sizeof(fb_bitfield)) == 0)
            format = QImage::Format_RGB666;
        break;
    }
    case 16: {
        const fb_bitfield rgb565[4] = {{11, 5, 0}, {5, 6, 0},
                                       {0, 5, 0}, {0, 0, 0}};
        const fb_bitfield bgr565[4] = {{0, 5, 0}, {5, 6, 0},
                                       {11, 5, 0}, {0, 0, 0}};
        if (memcmp(rgba, rgb565, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB16;
        } else if (memcmp(rgba, bgr565, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB16;
            pixeltype = BGRPixel;
        }
        break;
    }
    case 15: {
        const fb_bitfield rgb1555[4] = {{10, 5, 0}, {5, 5, 0},
                                        {0, 5, 0}, {15, 1, 0}};
        const fb_bitfield bgr1555[4] = {{0, 5, 0}, {5, 5, 0},
                                        {10, 5, 0}, {15, 1, 0}};
        if (memcmp(rgba, rgb1555, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB555;
        } else if (memcmp(rgba, bgr1555, 3 * sizeof(fb_bitfield)) == 0) {
            format = QImage::Format_RGB555;
            pixeltype = BGRPixel;
        }
        break;
    }
    case 12: {
        const fb_bitfield rgb444[4] = {{8, 4, 0}, {4, 4, 0},
                                       {0, 4, 0}, {0, 0, 0}};
        if (memcmp(rgba, rgb444, 3 * sizeof(fb_bitfield)) == 0)
            format = QImage::Format_RGB444;
        break;
    }
    case 8:
        break;
    case 1:
        format = QImage::Format_Mono; //###: LSB???
        break;
    default:
        break;
    }

    screenFormat = format;
}

Properties

cacheStart

int QLinuxFbIntegration::cacheStart

private

Definition at line 123 of file qlinuxfbintegration.h.

canaccel

bool QLinuxFbIntegration::canaccel

private

Definition at line 121 of file qlinuxfbintegration.h.

Referenced by connect(), and initDevice().

d

int QLinuxFbIntegration::d

private

Definition at line 106 of file qlinuxfbintegration.h.

Referenced by connect(), and setPixelFormat().

d_ptr

QLinuxFbIntegrationPrivate* QLinuxFbIntegration::d_ptr

private

Definition at line 93 of file qlinuxfbintegration.h.

Referenced by blank(), connect(), initDevice(), QLinuxFbIntegration(), and ~QLinuxFbIntegration().

data

uchar* QLinuxFbIntegration::data

private

Definition at line 100 of file qlinuxfbintegration.h.

Referenced by connect(), and QLinuxFbIntegration().

dataoffset

int QLinuxFbIntegration::dataoffset

private

Definition at line 122 of file qlinuxfbintegration.h.

Referenced by connect().

dh

int QLinuxFbIntegration::dh

private

Definition at line 111 of file qlinuxfbintegration.h.

Referenced by connect().

displayId

int QLinuxFbIntegration::displayId

private

Definition at line 116 of file qlinuxfbintegration.h.

dw

int QLinuxFbIntegration::dw

private

Definition at line 110 of file qlinuxfbintegration.h.

Referenced by connect().

fontDb

QPlatformFontDatabase* QLinuxFbIntegration::fontDb

private

Definition at line 130 of file qlinuxfbintegration.h.

Referenced by fontDatabase().

grayscale

bool QLinuxFbIntegration::grayscale

private

Definition at line 108 of file qlinuxfbintegration.h.

Referenced by connect(), createPalette(), and initDevice().

h

int QLinuxFbIntegration::h

private

Definition at line 105 of file qlinuxfbintegration.h.

Referenced by connect(), and QLinuxFbIntegration().

lstep

int QLinuxFbIntegration::lstep

private

Definition at line 104 of file qlinuxfbintegration.h.

Referenced by connect(), and QLinuxFbIntegration().

mapsize

int QLinuxFbIntegration::mapsize

private

Definition at line 114 of file qlinuxfbintegration.h.

Referenced by connect(), and initDevice().

mPrimaryScreen

QLinuxFbScreen* QLinuxFbIntegration::mPrimaryScreen

private

Definition at line 91 of file qlinuxfbintegration.h.

Referenced by createPlatformWindow(), createWindowSurface(), QLinuxFbIntegration(), and ~QLinuxFbIntegration().

mScreens

QList<QPlatformScreen *> QLinuxFbIntegration::mScreens

private

Definition at line 92 of file qlinuxfbintegration.h.

Referenced by QLinuxFbIntegration().

physHeight

int QLinuxFbIntegration::physHeight

private

Definition at line 119 of file qlinuxfbintegration.h.

Referenced by connect(), and QLinuxFbIntegration().

physWidth

int QLinuxFbIntegration::physWidth

private

Definition at line 118 of file qlinuxfbintegration.h.

Referenced by connect(), and QLinuxFbIntegration().

pixeltype

PixelType QLinuxFbIntegration::pixeltype

private

Definition at line 107 of file qlinuxfbintegration.h.

Referenced by setPixelFormat().

screenclut

QRgb QLinuxFbIntegration::screenclut[256]

private

Definition at line 97 of file qlinuxfbintegration.h.

Referenced by connect(), and createPalette().

screencols

int QLinuxFbIntegration::screencols

private

Definition at line 98 of file qlinuxfbintegration.h.

Referenced by connect(), createPalette(), and initDevice().

screenFormat

QImage::Format QLinuxFbIntegration::screenFormat

private

Definition at line 102 of file qlinuxfbintegration.h.

Referenced by QLinuxFbIntegration(), and setPixelFormat().

size

int QLinuxFbIntegration::size

private

Definition at line 113 of file qlinuxfbintegration.h.

Referenced by connect(), and initDevice().

w

int QLinuxFbIntegration::w

private

Definition at line 103 of file qlinuxfbintegration.h.

Referenced by connect(), createPlatformWindow(), and QLinuxFbIntegration().

---

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

• /src/plugins/platforms/linuxfb/qlinuxfbintegration.h
• /src/plugins/platforms/linuxfb/qlinuxfbintegration.cpp