QIntfbScreen Class Reference

The QIntfbScreen class implements a screen driver for the INTEGRITY framebuffer drivers. More...

#include <qscreenintegrityfb_qws.h>

Inheritance diagram for QIntfbScreen:

Public Functions
virtual void	blank (bool)
	Prevents the screen driver form displaying any content on the screen. More...
virtual bool	connect (const QString &displaySpec)
	Reimplemented Function More...
virtual void	disconnect ()
	Reimplemented Function More...
virtual bool	initDevice ()
	Reimplemented Function More...
	QIntfbScreen (int display_id)
	Constructs a QVNCScreen object. More...
virtual void	restore ()
	Reimplemented Function More...
virtual void	save ()
	Reimplemented Function More...
virtual void	setDirty (const QRect &r)
	Reimplemented Function More...
virtual void	setMode (int nw, int nh, int nd)
	Reimplemented Function More...
virtual void	shutdownDevice ()
	Reimplemented Function More...
virtual	~QIntfbScreen ()
	Destroys this QIntfbScreen object. More...
Public Functions inherited from QScreen
virtual int	alloc (unsigned int, unsigned int, unsigned int)
	Returns the index in the screen's palette which is the closest match to the given RGB value (red, green, blue). More...
uchar *	base () const
	Returns a pointer to the beginning of the framebuffer. More...
virtual void	blit (const QImage &img, const QPoint &topLeft, const QRegion &region)
	Copies the given region in the given image to the point specified by topLeft using device coordinates. More...
void	blit (QWSWindow *bs, const QRegion &clip)
virtual uchar *	cache (int)
ClassId	classId () const
	Returns the class identifier for the screen object. More...
QRgb *	clut ()
	Returns a pointer to the screen's color lookup table (i. More...
int	colorCount ()
	Returns the number of entries in the screen's color lookup table (i. More...
virtual QWSWindowSurface *	createSurface (QWidget *widget) const
	Creates and returns a new window surface for the given widget. More...
virtual QWSWindowSurface *	createSurface (const QString &key) const
	Creates and returns a new window surface matching the given key. More...
int	depth () const
	Returns the depth of the framebuffer, in bits per pixel. More...
int	deviceHeight () const
	Returns the full height of the framebuffer device in pixels. More...
int	deviceWidth () const
	Returns the physical width of the framebuffer device in pixels. More...
virtual void	exposeRegion (QRegion r, int changing)
	This function is called by the Qt for Embedded Linux server whenever a screen update is required. More...
QGraphicsSystem *	graphicsSystem () const
virtual void	haltUpdates ()
int	height () const
	Returns the logical height of the framebuffer in pixels. More...
virtual bool	isInterlaced () const
	Returns true if the display is interlaced (i. More...
virtual bool	isTransformed () const
	Returns true if the screen is transformed (for instance, rotated 90 degrees); otherwise returns false. More...
int	linestep () const
	Returns the length of each scanline of the framebuffer in bytes. More...
virtual QSize	mapFromDevice (const QSize &) const
	Maps the given size from the framebuffer coordinate system to the coordinate space used by the application. More...
virtual QPoint	mapFromDevice (const QPoint &, const QSize &) const
	Maps the given point from the framebuffer coordinate system to the coordinate space used by the application, passing the device's screenSize as argument. More...
virtual QRect	mapFromDevice (const QRect &, const QSize &) const
	Maps the given rectangle from the framebuffer coordinate system to the coordinate space used by the application, passing the device's screenSize as argument. More...
virtual QImage	mapFromDevice (const QImage &) const
	Maps the given image from the framebuffer coordinate system to the coordinate space used by the application. More...
virtual QRegion	mapFromDevice (const QRegion &, const QSize &) const
	Maps the given region from the framebuffer coordinate system to the coordinate space used by the application, passing the device's screenSize as argument. More...
virtual QSize	mapToDevice (const QSize &) const
	Maps the given size from the coordinate space used by the application to the framebuffer coordinate system. More...
virtual QPoint	mapToDevice (const QPoint &, const QSize &) const
	Maps the given point from the coordinate space used by the application to the framebuffer coordinate system, passing the device's screenSize as argument. More...
virtual QRect	mapToDevice (const QRect &, const QSize &) const
	Maps the given rectangle from the coordinate space used by the application to the framebuffer coordinate system, passing the device's screenSize as argument. More...
virtual QImage	mapToDevice (const QImage &) const
	Maps the given image from the coordinate space used by the application to the framebuffer coordinate system. More...
virtual QRegion	mapToDevice (const QRegion &, const QSize &) const
	Maps the given region from the coordinate space used by the application to the framebuffer coordinate system, passing the device's screenSize as argument. More...
virtual int	memoryNeeded (const QString &)
QT_DEPRECATED int	numCols ()
QPoint	offset () const
	Returns the logical offset of the screen, i. More...
virtual bool	onCard (const unsigned char *) const
	Returns true if the specified buffer is within the graphics card's memory; otherwise returns false (i.e. More...
virtual bool	onCard (const unsigned char *, ulong &out_offset) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.If the specified buffer is within the graphics card's memory, this function stores the offset from the start of graphics card memory (in bytes), in the location specified by the offset parameter. More...
int	physicalHeight () const
	Returns the physical height of the screen in millimeters. More...
int	physicalWidth () const
	Returns the physical width of the screen in millimeters. More...
QImage::Format	pixelFormat () const
	Returns the pixel format of the screen, or QImage::Format_Invalid if the pixel format is not a supported image format. More...
PixelType	pixelType () const
	Returns the pixel storage format of the screen. More...
QPixmapDataFactory *	pixmapDataFactory () const
virtual int	pixmapDepth () const
	Returns the preferred depth for pixmaps, in bits per pixel. More...
virtual int	pixmapLinestepAlignment ()
	Returns the value (in bits) to which individual scanlines of pixmaps held in the graphics card's memory, should be aligned. More...
virtual int	pixmapOffsetAlignment ()
	Returns the value (in bits) to which the start address of pixmaps held in the graphics card's memory, should be aligned. More...
	QScreen (int display_id, ClassId classId)
	Constructs a new screen driver. More...
	QScreen (int display_id)
	Constructs a new screen driver. More...
virtual QRegion	region () const
	Returns the region covered by this screen driver. More...
virtual void	resumeUpdates ()
int	screenSize () const
	Returns the size of the screen in bytes. More...
virtual void	set (unsigned int, unsigned int, unsigned int, unsigned int)
void	setOffset (const QPoint &p)
virtual int	sharedRamSize (void *)
virtual void	solidFill (const QColor &color, const QRegion &region)
	Fills the given region of the screen with the specified color. More...
int	subScreenIndexAt (const QPoint &p) const
	Returns the index of the subscreen at the given position; returns -1 if no screen is found. More...
virtual QList< QScreen * >	subScreens () const
virtual bool	supportsDepth (int) const
	Returns true if the screen supports the specified color depth; otherwise returns false. More...
int	totalSize () const
	Returns the size of the available graphics card memory (including the screen) in bytes. More...
virtual int	transformOrientation () const
	Returns the current rotation as an integer value. More...
virtual void	uncache (uchar *)
int	width () const
	Returns the logical width of the framebuffer in pixels. More...
virtual	~QScreen ()
	Destroys this screen driver. More...

Static Public Functions
static void	setBrightness (int b)
Static Public Functions inherited from QScreen
static QScreen *	instance ()
	Returns a pointer to the application's QScreen instance. More...

Properties
QIntfbScreenPrivate *	d_ptr

Additional Inherited Members
Public Types inherited from QScreen
enum	ClassId {   LinuxFBClass, TransformedClass, VNCClass, MultiClass,   VFbClass, DirectFBClass, SvgalibClass, ProxyClass,   GLClass, IntfbClass, CustomClass = 1024 }
	This enum defines the class identifiers for the known screen subclasses. More...
enum	PixelType { NormalPixel, BGRPixel }
	This enum describes the pixel storage format of the screen, i. More...
Protected Functions inherited from QScreen
void	setGraphicsSystem (QGraphicsSystem *system)
void	setPixelFormat (QImage::Format format)
	Sets the screen's pixel format to format. More...
void	setPixmapDataFactory (QPixmapDataFactory *factory)
Protected Variables inherited from QScreen
int	d
	the pixel depth More...
uchar *	data
	points to the first visible pixel in the frame buffer. More...
int	dh
	the device height More...
int	displayId
int	dw
	the device width More...
QPoolEntry *	entries
int *	entryp
bool	grayscale
	the gray scale screen mode flag More...
int	h
	the logical height of the screen. More...
unsigned int *	lowest
int	lstep
	the number of bytes representing a line in the frame buffer. More...
int	mapsize
	the total number of bytes in the frame buffer More...
int	physHeight
	the physical height of the screen in millimeters. More...
int	physWidth
	the physical width of the screen in millimeters. More...
PixelType	pixeltype
	set to BGRPixel More...
QRgb	screenclut [256]
	the color table More...
int	screencols
	the number of entries in the color table More...
int	size
	the number of bytes in the visible region of the frame buffer More...
int	w
	the logical width of the screen. More...
Static Protected Variables inherited from QScreen
static ClearCacheFunc	clearCacheFunc = 0
Related Functions inherited from QScreen
void	setTransformation (int transformation, int screenNo)
	Here it is. More...

Detailed Description

The QIntfbScreen class implements a screen driver for the INTEGRITY framebuffer drivers.

Warning

This function is not part of the public interface.

Note that this class is only available in Qt for INTEGRITY. Custom screen drivers can be added by subclassing the QScreenDriverPlugin class, using the QScreenDriverFactory class to dynamically load the driver into the application, but there should only be one screen object per application.

See also

QScreen, QScreenDriverPlugin, {Running Applications}

Definition at line 57 of file qscreenintegrityfb_qws.h.

Constructors and Destructors

QIntfbScreen()

QIntfbScreen::QIntfbScreen ( int  displayId )

explicit

Constructs a QVNCScreen object.

The displayId argument identifies the Qt for Embedded Linux server to connect to.

Definition at line 163 of file qscreenintegrityfb_qws.cpp.

    : QScreen(display_id, IntfbClass), d_ptr(new QIntfbScreenPrivate)
{
    d_ptr->handle = 0;
    data = 0;
}

~QIntfbScreen()

QIntfbScreen::~QIntfbScreen ( )

virtual

Destroys this QIntfbScreen object.

Definition at line 173 of file qscreenintegrityfb_qws.cpp.

{
    delete d_ptr;
}

Functions

blank()

void QIntfbScreen::blank ( bool  on )

virtual

Prevents the screen driver form displaying any content on the screen.

Note that the default implementation does nothing.

Reimplement this function to prevent the screen driver from displaying any contents on the screen if on is true; otherwise the contents is expected to be shown.

See also

blit()

Reimplemented from QScreen.

Definition at line 338 of file qscreenintegrityfb_qws.cpp.

{
}

connect()

bool QIntfbScreen::connect ( const QString &  displaySpec )

virtual

Reimplemented Function

Implements QScreen.

Definition at line 180 of file qscreenintegrityfb_qws.cpp.

{
    CheckSuccess(gh_FB_get_driver(0, &d_ptr->fbdrv));
    CheckSuccess(gh_FB_check_info(d_ptr->fbdrv, &d_ptr->fbinfo));
    CheckSuccess(gh_FB_open(d_ptr->fbdrv, &d_ptr->fbinfo, &d_ptr->handle));
    CheckSuccess(gh_FB_get_info(d_ptr->handle, &d_ptr->fbinfo));

    data = (uchar *)d_ptr->fbinfo.Start;

    d = d_ptr->fbinfo.BitsPerPixel;
    switch (d) {
    case 1:
        setPixelFormat(QImage::Format_Mono);
        break;
    case 8:
        setPixelFormat(QImage::Format_Indexed8);
        break;
    case 12:
        setPixelFormat(QImage::Format_RGB444);
        break;
    case 15:
        setPixelFormat(QImage::Format_RGB555);
        break;
    case 16:
        setPixelFormat(QImage::Format_RGB16);
        break;
    case 18:
        setPixelFormat(QImage::Format_RGB666);
        break;
    case 24:
        setPixelFormat(QImage::Format_RGB888);
#ifdef QT_QWS_DEPTH_GENERIC
#if Q_BYTE_ORDER != Q_BIG_ENDIAN
            qt_set_generic_blit(this, 24,
                    d_ptr->fbinfo.Red.Bits,
                    d_ptr->fbinfo.Green.Bits,
                    d_ptr->fbinfo.Blue.Bits,
                    d_ptr->fbinfo.Alpha.Bits,
                    d_ptr->fbinfo.Red.Offset,
                    d_ptr->fbinfo.Green.Offset,
                    d_ptr->fbinfo.Blue.Offset,
                    d_ptr->fbinfo.Alpha.Offset);
#else
            qt_set_generic_blit(this, 24,
                    d_ptr->fbinfo.Red.Bits,
                    d_ptr->fbinfo.Green.Bits,
                    d_ptr->fbinfo.Blue.Bits,
                    d_ptr->fbinfo.Alpha.Bits,
                    16 - d_ptr->fbinfo.Red.Offset,
                    16 - d_ptr->fbinfo.Green.Offset,
                    16 - d_ptr->fbinfo.Blue.Offset,
                    16 - d_ptr->fbinfo.Alpha.Offset);
#endif
#endif
        break;
    case 32:
        setPixelFormat(QImage::Format_ARGB32_Premultiplied);
#ifdef QT_QWS_DEPTH_GENERIC
#if Q_BYTE_ORDER != Q_BIG_ENDIAN
            qt_set_generic_blit(this, 32,
                    d_ptr->fbinfo.Red.Bits,
                    d_ptr->fbinfo.Green.Bits,
                    d_ptr->fbinfo.Blue.Bits,
                    d_ptr->fbinfo.Alpha.Bits,
                    d_ptr->fbinfo.Red.Offset,
                    d_ptr->fbinfo.Green.Offset,
                    d_ptr->fbinfo.Blue.Offset,
                    d_ptr->fbinfo.Alpha.Offset);
#else
            qt_set_generic_blit(this, 32,
                    d_ptr->fbinfo.Red.Bits,
                    d_ptr->fbinfo.Green.Bits,
                    d_ptr->fbinfo.Blue.Bits,
                    d_ptr->fbinfo.Alpha.Bits,
                    24 - d_ptr->fbinfo.Red.Offset,
                    24 - d_ptr->fbinfo.Green.Offset,
                    24 - d_ptr->fbinfo.Blue.Offset,
                    24 - d_ptr->fbinfo.Alpha.Offset);
#endif
#endif
        break;
    }

    dw = w = d_ptr->fbinfo.Width;
    dh = h = d_ptr->fbinfo.Height;

    /* assumes no padding */
    lstep = w * ((d + 7) >> 3);

    mapsize = size =  h * lstep;

    /* default values */
    int dpi = 72;
    physWidth = qRound(dw * 25.4 / dpi);
    physHeight = qRound(dh * 25.4 / dpi);

    qDebug("Connected to INTEGRITYfb server: %d x %d x %d %dx%dmm (%dx%ddpi)",
        w, h, d, physWidth, physHeight, qRound(dw*25.4/physWidth), qRound(dh*25.4/physHeight) );


    QWSServer::setDefaultMouse("integrity");
    QWSServer::setDefaultKeyboard("integrity");

    connected = this;

    return true;
}

disconnect()

void QIntfbScreen::disconnect ( )

virtual

Reimplemented Function

Implements QScreen.

Definition at line 288 of file qscreenintegrityfb_qws.cpp.

{
    connected = 0;
}

initDevice()

bool QIntfbScreen::initDevice ( )

virtual

Reimplemented Function

Implements QScreen.

Definition at line 293 of file qscreenintegrityfb_qws.cpp.

{
#ifndef QT_NO_QWS_CURSOR
    QScreenCursor::initSoftwareCursor();
#endif
    return true;
}

restore()

void QIntfbScreen::restore ( )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 319 of file qscreenintegrityfb_qws.cpp.

{
}

save()

void QIntfbScreen::save ( )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 313 of file qscreenintegrityfb_qws.cpp.

{
    // nothing to do.
}

setBrightness()

void QIntfbScreen::setBrightness ( int  b )

static

Definition at line 332 of file qscreenintegrityfb_qws.cpp.

{
    if (connected) {
    }
}

setDirty()

void QIntfbScreen::setDirty ( const QRect &  r )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 322 of file qscreenintegrityfb_qws.cpp.

{
    FBRect fbrect;
    fbrect.dx = rect.x();
    fbrect.dy = rect.y();
    fbrect.Width = rect.width();
    fbrect.Height = rect.height();
    gh_FB_expose(d_ptr->handle, &fbrect, 0);
}

setMode()

void QIntfbScreen::setMode ( int  nw, int  nh, int  nd  )

virtual

Reimplemented Function

Implements QScreen.

Definition at line 306 of file qscreenintegrityfb_qws.cpp.

{
}

shutdownDevice()

void QIntfbScreen::shutdownDevice ( )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 301 of file qscreenintegrityfb_qws.cpp.

{
    gh_FB_close(d_ptr->handle);
}

Properties

d_ptr

QIntfbScreenPrivate* QIntfbScreen::d_ptr

private

Definition at line 74 of file qscreenintegrityfb_qws.h.

Referenced by connect(), QIntfbScreen(), setDirty(), shutdownDevice(), and ~QIntfbScreen().

---

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

• /src/gui/embedded/qscreenintegrityfb_qws.h
• /src/gui/embedded/qscreenintegrityfb_qws.cpp