QProxyScreen Class Reference

The QProxyScreen class provides a generic interface to QScreen implementations. More...

#include <qscreenproxy_qws.h>

Inheritance diagram for QProxyScreen:

Public Functions
void	blank (bool on)
	Reimplemented Function More...
void	blit (const QImage &img, const QPoint &topLeft, const QRegion &region)
	Reimplemented Function More...
bool	connect (const QString &displaySpec)
	Reimplemented Function More...
QWSWindowSurface *	createSurface (QWidget *widget) const
	Reimplemented Function More...
QWSWindowSurface *	createSurface (const QString &key) const
	Reimplemented Function More...
void	disconnect ()
	Reimplemented Function More...
void	exposeRegion (QRegion r, int changing)
	Reimplemented Function More...
void	haltUpdates ()
bool	initDevice ()
	This function is called by the Qt for Embedded Linux server to initialize the framebuffer. More...
bool	isInterlaced () const
	Reimplemented Function More...
bool	isTransformed () const
	Reimplemented Function More...
QSize	mapFromDevice (const QSize &s) const
	Reimplemented Function More...
QPoint	mapFromDevice (const QPoint &, const QSize &) const
	Reimplemented Function More...
QRect	mapFromDevice (const QRect &, const QSize &) const
	Reimplemented Function More...
QRegion	mapFromDevice (const QRegion &, const QSize &) const
	Reimplemented Function More...
QSize	mapToDevice (const QSize &s) const
	Reimplemented Function More...
QPoint	mapToDevice (const QPoint &, const QSize &) const
	Reimplemented Function More...
QRect	mapToDevice (const QRect &, const QSize &) const
	Reimplemented Function More...
QRegion	mapToDevice (const QRegion &, const QSize &) const
	Reimplemented Function More...
int	memoryNeeded (const QString &)
bool	onCard (const unsigned char *) const
	Reimplemented Function More...
bool	onCard (const unsigned char *, ulong &out_offset) const
	Reimplemented Function More...
	QProxyScreen (int display_id, ClassId=ProxyClass)
	Constructs a proxy screen with the given displayId and classId. More...
QRegion	region () const
	Reimplemented Function More...
void	restore ()
	Reimplemented Function More...
void	resumeUpdates ()
void	save ()
	Reimplemented Function More...
QScreen *	screen () const
	Returns the real screen used by the proxy screen. More...
void	setDirty (const QRect &)
	Reimplemented Function More...
void	setMode (int width, int height, int depth)
	Reimplemented Function More...
void	setScreen (QScreen *screen)
	Sets the real screen to be used by the proxy screen. More...
int	sharedRamSize (void *)
void	shutdownDevice ()
	Reimplemented Function More...
void	solidFill (const QColor &color, const QRegion &region)
	Reimplemented Function More...
QList< QScreen * >	subScreens () const
	Reimplemented Function More...
bool	supportsDepth (int) const
	Reimplemented Function More...
int	transformOrientation () const
	Reimplemented Function More...
	~QProxyScreen ()
	Destroys the proxy screen. 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...
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...
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...
QGraphicsSystem *	graphicsSystem () const
int	height () const
	Returns the logical height of the framebuffer in pixels. More...
int	linestep () const
	Returns the length of each scanline of the framebuffer in bytes. 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 QImage	mapToDevice (const QImage &) const
	Maps the given image from the coordinate space used by the application to the framebuffer coordinate system. More...
QT_DEPRECATED int	numCols ()
QPoint	offset () const
	Returns the logical offset of the screen, i. 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...
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)
int	subScreenIndexAt (const QPoint &p) const
	Returns the index of the subscreen at the given position; returns -1 if no screen is found. More...
int	totalSize () const
	Returns the size of the available graphics card memory (including the screen) in bytes. 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...

Private Functions
void	configure ()

Properties
QProxyScreenPrivate *	d_ptr
QScreen *	realScreen

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...
Static Public Functions inherited from QScreen
static QScreen *	instance ()
	Returns a pointer to the application's QScreen instance. 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 QProxyScreen class provides a generic interface to QScreen implementations.

Definition at line 84 of file qscreenproxy_qws.h.

Constructors and Destructors

QProxyScreen()

QProxyScreen::QProxyScreen	(	int	display_id,
		QScreen::ClassId	classId = ProxyClass
	)

Constructs a proxy screen with the given displayId and classId.

Definition at line 189 of file qscreenproxy_qws.cpp.

    : QScreen(displayId, classId), realScreen(0), d_ptr(0)
{
}

~QProxyScreen()

QProxyScreen::~QProxyScreen

(

)

Destroys the proxy screen.

Definition at line 197 of file qscreenproxy_qws.cpp.

{
}

Functions

blank()

void QProxyScreen::blank ( bool  on )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 496 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        realScreen->blank(on);
}

blit()

void QProxyScreen::blit ( const QImage &  img, const QPoint &  topLeft, const QRegion &  region  )

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 305 of file qscreenproxy_qws.cpp.

Referenced by QTransformedScreen::blit(), and QTransformedScreen::isTransformed().

{
    if (!realScreen) {
        QScreen::blit(image, topLeft, region);
        return;
    }

    realScreen->blit(image, topLeft, region);
}

configure()

void QProxyScreen::configure ( )

private

Warning

This function is not part of the public interface.

Definition at line 226 of file qscreenproxy_qws.cpp.

Referenced by connect(), setMode(), and setScreen().

{
    if (!realScreen)
        return;

    d = realScreen->depth();
    w = realScreen->width();
    h = realScreen->height();
    dw = realScreen->deviceWidth();
    dh = realScreen->deviceHeight();
    lstep = realScreen->linestep();
    data = realScreen->base();
    lstep = realScreen->linestep();
    size = realScreen->screenSize();
    physWidth = realScreen->physicalWidth();
    physHeight = realScreen->physicalHeight();
    pixeltype = realScreen->pixelType();
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
    setFrameBufferLittleEndian(realScreen->frameBufferLittleEndian());
#endif

    setOffset(realScreen->offset());
    setPixelFormat(realScreen->pixelFormat());

#ifdef QT_QWS_CLIENTBLIT
    setSupportsBlitInClients(realScreen->supportsBlitInClients());
#endif
}

connect()

bool QProxyScreen::connect ( const QString &  displaySpec )

virtual

Reimplemented Function

Implements QScreen.

Reimplemented in QTransformedScreen, and QVNCScreen.

Definition at line 275 of file qscreenproxy_qws.cpp.

{
    const int id = getDisplayId(displaySpec);
    realScreen = qt_get_screen(id, displaySpec.toLatin1().constData());
    configure();

    return true;
}

createSurface() [1/2]

QWSWindowSurface * QProxyScreen::createSurface ( QWidget *  widget ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 604 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->createSurface(widget);

    return QScreen::createSurface(widget);
}

createSurface() [2/2]

QWSWindowSurface * QProxyScreen::createSurface ( const QString &  key ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 615 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->createSurface(key);

    return QScreen::createSurface(key);
}

disconnect()

void QProxyScreen::disconnect ( )

virtual

Reimplemented Function

Implements QScreen.

Reimplemented in QVNCScreen.

Definition at line 419 of file qscreenproxy_qws.cpp.

Referenced by QVNCScreen::disconnect().

{
    if (realScreen) {
        realScreen->disconnect();
        delete realScreen;
        realScreen = 0;
    }
}

exposeRegion()

void QProxyScreen::exposeRegion ( QRegion  r, int  changing  )

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 287 of file qscreenproxy_qws.cpp.

Referenced by QTransformedScreen::exposeRegion(), QTransformedScreen::isTransformed(), and setMode().

{
    if (!realScreen) {
        QScreen::exposeRegion(r, changing);
        return;
    }

    realScreen->exposeRegion(r, changing);
    r &= realScreen->region();

    const QVector<QRect> rects = r.rects();
    for (int i = 0; i < rects.size(); ++i)
        setDirty(rects.at(i));
}

haltUpdates()

void QProxyScreen::haltUpdates ( )

virtual

Warning

This function is not part of the public interface.

Reimplemented from QScreen.

Definition at line 577 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        realScreen->haltUpdates();
}

initDevice()

bool QProxyScreen::initDevice ( )

virtual

This function is called by the Qt for Embedded Linux server to initialize the framebuffer.

Note that a server application will call the connect() function prior to this function.

Implement this function to make accelerated drivers set up the graphics card. Return true to indicate success and false to indicate failure.

See also

shutdownDevice(), connect()

Implements QScreen.

Reimplemented in QVNCScreen.

Definition at line 430 of file qscreenproxy_qws.cpp.

Referenced by QVNCScreen::initDevice().

{
    if (realScreen)
        return realScreen->initDevice();

    return false;
}

isInterlaced()

bool QProxyScreen::isInterlaced ( ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 525 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->isInterlaced();
    return false;
}

isTransformed()

bool QProxyScreen::isTransformed ( ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 535 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->isTransformed();
    return QScreen::isTransformed();
}

mapFromDevice() [1/4]

QSize QProxyScreen::mapFromDevice ( const QSize &  s ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 342 of file qscreenproxy_qws.cpp.

Referenced by QTransformedScreen::mapFromDevice().

{
    if (!realScreen)
        return QScreen::mapFromDevice(s);

    return realScreen->mapFromDevice(s);
}

mapFromDevice() [2/4]

QPoint QProxyScreen::mapFromDevice ( const QPoint &  p, const QSize &  s  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 364 of file qscreenproxy_qws.cpp.

{
    if (!realScreen)
        return QScreen::mapFromDevice(p, s);

    return realScreen->mapFromDevice(p, s);
}

mapFromDevice() [3/4]

QRect QProxyScreen::mapFromDevice ( const QRect &  r, const QSize &  s  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 386 of file qscreenproxy_qws.cpp.

{
    if (!realScreen)
        return QScreen::mapFromDevice(r, s);

    return realScreen->mapFromDevice(r, s);
}

mapFromDevice() [4/4]

QRegion QProxyScreen::mapFromDevice ( const QRegion &  r, const QSize &  s  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 408 of file qscreenproxy_qws.cpp.

{
    if (!realScreen)
        return QScreen::mapFromDevice(r, s);

    return realScreen->mapFromDevice(r, s);
}

mapToDevice() [1/4]

QSize QProxyScreen::mapToDevice ( const QSize &  s ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 331 of file qscreenproxy_qws.cpp.

Referenced by QTransformedScreen::mapToDevice().

{
    if (!realScreen)
        return QScreen::mapToDevice(s);

    return realScreen->mapToDevice(s);
}

mapToDevice() [2/4]

QPoint QProxyScreen::mapToDevice ( const QPoint &  p, const QSize &  s  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 353 of file qscreenproxy_qws.cpp.

{
    if (!realScreen)
        return QScreen::mapToDevice(p, s);

    return realScreen->mapToDevice(p, s);
}

mapToDevice() [3/4]

QRect QProxyScreen::mapToDevice ( const QRect &  r, const QSize &  s  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 375 of file qscreenproxy_qws.cpp.

{
    if (!realScreen)
        return QScreen::mapToDevice(r, s);

    return realScreen->mapToDevice(r, s);
}

mapToDevice() [4/4]

QRegion QProxyScreen::mapToDevice ( const QRegion &  r, const QSize &  s  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 397 of file qscreenproxy_qws.cpp.

{
    if (!realScreen)
        return QScreen::mapToDevice(r, s);

    return realScreen->mapToDevice(r, s);
}

memoryNeeded()

int QProxyScreen::memoryNeeded ( const QString &  str )

virtual

Warning

This function is not part of the public interface.

Reimplemented from QScreen.

Definition at line 555 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->memoryNeeded(str);
    else
        return QScreen::memoryNeeded(str);
}

onCard() [1/2]

bool QProxyScreen::onCard ( const unsigned char *  ptr ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 505 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->onCard(ptr);
    return false;
}

onCard() [2/2]

bool QProxyScreen::onCard ( const unsigned char *  ptr, ulong &  out_offset  ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 515 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->onCard(ptr, offset);
    return false;
}

region()

QRegion QProxyScreen::region ( ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 637 of file qscreenproxy_qws.cpp.

Referenced by QTransformedScreen::isTransformed(), QTransformedScreen::region(), and setMode().

{
    if (realScreen)
        return realScreen->region();
    else
        return QScreen::region();
}

restore()

void QProxyScreen::restore ( )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 486 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        realScreen->restore();
    QScreen::restore();
}

resumeUpdates()

void QProxyScreen::resumeUpdates ( )

virtual

Warning

This function is not part of the public interface.

Reimplemented from QScreen.

Definition at line 586 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        realScreen->resumeUpdates();
}

save()

void QProxyScreen::save ( )

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 476 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        realScreen->save();
    QScreen::save();
}

screen()

QScreen * QProxyScreen::screen

(

)

const

Returns the real screen used by the proxy screen.

See also

setScreen()

Definition at line 217 of file qscreenproxy_qws.cpp.

Referenced by QVNCScreenPrivate::configure(), QVNCScreen::initDevice(), QVNCIntegration::isVirtualDesktop(), QVNCServer::newConnection(), QVNCServer::setEncodings(), setScreen(), QApplicationPrivate::setScreenTransformation(), QTransformedScreen::setTransformation(), and QVNCScreenPrivate::~QVNCScreenPrivate().

{
    return realScreen;
}

setDirty()

void QProxyScreen::setDirty ( const QRect &  rect )

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen, and QVNCScreen.

Definition at line 595 of file qscreenproxy_qws.cpp.

Referenced by exposeRegion(), QTransformedScreen::isTransformed(), and QTransformedScreen::setDirty().

{
    if (realScreen)
        realScreen->setDirty(rect);
}

setMode()

void QProxyScreen::setMode ( int  width, int  height, int  depth  )

virtual

Reimplemented Function

Implements QScreen.

Definition at line 450 of file qscreenproxy_qws.cpp.

{
    if (realScreen) {
        realScreen->setMode(w, h, d);
    } else {
        QScreen::dw = QScreen::w = w;
        QScreen::dh = QScreen::h = h;
        QScreen::d = d;
    }
    configure();
    exposeRegion(region(), 0);
}

setScreen()

void QProxyScreen::setScreen

(

QScreen *

screen

)

Sets the real screen to be used by the proxy screen.

See also

screen()

Definition at line 206 of file qscreenproxy_qws.cpp.

Referenced by QVNCScreen::connect(), QTransformedScreen::connect(), and QApplicationPrivate::setScreenTransformation().

{
    realScreen = screen;
    configure();
}

sharedRamSize()

int QProxyScreen::sharedRamSize ( void *  ptr )

virtual

Warning

This function is not part of the public interface.

Reimplemented from QScreen.

Definition at line 566 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->sharedRamSize(ptr);
    else
        return QScreen::sharedRamSize(ptr);
}

shutdownDevice()

void QProxyScreen::shutdownDevice ( )

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QVNCScreen.

Definition at line 441 of file qscreenproxy_qws.cpp.

Referenced by QVNCScreen::shutdownDevice().

{
    if (realScreen)
        realScreen->shutdownDevice();
}

solidFill()

void QProxyScreen::solidFill ( const QColor &  color, const QRegion &  region  )

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 319 of file qscreenproxy_qws.cpp.

Referenced by QTransformedScreen::isTransformed(), and QTransformedScreen::solidFill().

{
    if (!realScreen) {
        QScreen::solidFill(color, region);
        return;
    }
    realScreen->solidFill(color, region);
}

subScreens()

QList< QScreen * > QProxyScreen::subScreens ( ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 626 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->subScreens();

    return QScreen::subScreens();
}

supportsDepth()

bool QProxyScreen::supportsDepth ( int  depth ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Definition at line 466 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->supportsDepth(depth);
    return false;
}

transformOrientation()

int QProxyScreen::transformOrientation ( ) const

virtual

Reimplemented Function

Reimplemented from QScreen.

Reimplemented in QTransformedScreen.

Definition at line 545 of file qscreenproxy_qws.cpp.

{
    if (realScreen)
        return realScreen->transformOrientation();
    return QScreen::transformOrientation();
}

Properties

d_ptr

QProxyScreenPrivate* QProxyScreen::d_ptr

private

Definition at line 145 of file qscreenproxy_qws.h.

realScreen

QScreen* QProxyScreen::realScreen

private

Definition at line 144 of file qscreenproxy_qws.h.

Referenced by blank(), blit(), configure(), connect(), createSurface(), disconnect(), exposeRegion(), haltUpdates(), initDevice(), isInterlaced(), isTransformed(), mapFromDevice(), mapToDevice(), memoryNeeded(), onCard(), region(), restore(), resumeUpdates(), save(), screen(), setDirty(), setMode(), setScreen(), sharedRamSize(), shutdownDevice(), solidFill(), subScreens(), supportsDepth(), and transformOrientation().

---

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

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