QVNCCursor Class Reference

#include <qscreenvnc_p.h>

Inheritance diagram for QVNCCursor:

Public Functions
void	changeCursor (QCursor *widgetCursor, QWidget *widget)
	This method is called by Qt whenever the cursor graphic should be changed. More...
void	clearClientCursor ()
QRect	drawCursor (QPainter &)
void	hide ()
	Reimplemented Function More...
void	move (int x, int y)
	Reimplemented Function More...
	QVNCCursor (QVNCServer *, QVNCScreen *)
	QVNCCursor (QVNCScreen *s)
void	sendClientCursor ()
void	set (const QImage &image, int hotx, int hoty)
	Reimplemented Function More...
void	setCursorMode (bool vnc)
void	show ()
	Reimplemented Function More...
	~QVNCCursor ()
Public Functions inherited from QPlatformSoftwareCursor
QRect	dirtyRect ()
virtual bool	isDirty ()
virtual bool	isOnScreen ()
virtual QRect	lastPainted ()
virtual void	pointerEvent (const QMouseEvent &event)
	This method is called by Qt whenever a QMouseEvent is generated by the underlying pointer input. More...
	QPlatformSoftwareCursor (QPlatformScreen *scr)
virtual void	setDirty ()
Public Functions inherited from QPlatformCursor
virtual QPoint	pos () const
	QPlatformCursor (QPlatformScreen *)
	Constructs a QPlatformCursor for the given screen. More...
virtual void	setPos (const QPoint &pos)
Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
const QObjectList &	children () const
	Returns a list of child objects. More...
bool	connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
bool	disconnect (const QObject *receiver, const char *member=0)
void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...
void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...
QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...
virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
virtual bool	eventFilter (QObject *, QEvent *)
	Filters events if this object has been installed as an event filter for the watched object. More...
template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...
template<typename T >
QList< T >	findChildren (const QRegExp &re) const
bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...
void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...
bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...
void	killTimer (int id)
	Kills the timer with timer identifier, id. More...
virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...
void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...
QString	objectName () const
QObject *	parent () const
	Returns a pointer to the parent object. More...
QVariant	property (const char *name) const
	Returns the value of the object's name property. More...
Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...
void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...
void	setObjectName (const QString &name)
void	setParent (QObject *)
	Makes the object a child of parent. More...
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...
void	setUserData (uint id, QObjectUserData *data)
bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...
int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
QThread *	thread () const
	Returns the thread in which the object lives. More...
QObjectUserData *	userData (uint id) const
virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...
Public Functions inherited from QProxyScreenCursor
	QProxyScreenCursor ()
	Constructs a proxy screen cursor. More...
QScreenCursor *	screenCursor () const
	Returns the real screen cursor used by the proxy screen cursor. More...
void	setScreenCursor (QScreenCursor *cursor)
	Sets the real screen cursor to be used for the proxy screen cursor to the cursor specified. More...
	~QProxyScreenCursor ()
	Destroys the proxy screen cursor. More...
Public Functions inherited from QScreenCursor
QRect	boundingRect () const
	Returns the cursor's bounding rectangle. More...
QImage	image () const
	Returns the cursor's image. More...
bool	isAccelerated () const
	Returns true if the cursor is accelerated; otherwise false. More...
bool	isVisible () const
	Returns true if the cursor is visible; otherwise false. More...
	QScreenCursor ()
	Constructs a screen cursor. More...
bool	supportsAlphaCursor () const
virtual	~QScreenCursor ()
	Destroys the screen cursor. More...

Private Functions
void	setDirty (const QRect &r) const

Properties
QVNCScreen *	screen
QVNCServer *	server
bool	useVncCursor

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...
Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
Static Public Functions inherited from QObject
static bool	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
static bool	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
static bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
	Disconnects signal in object sender from method in object receiver. More...
static bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static uint	registerUserData ()
static QString	tr (const char *sourceText, const char *comment=0, int n=-1)
static QString	trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
Static Public Functions inherited from QScreenCursor
static bool	enabled ()
static void	initSoftwareCursor ()
	Initializes the screen cursor. More...
static QScreenCursor *	instance ()
Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...
Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...
virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...
virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...
virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...
	QObject (QObjectPrivate &dd, QObject *parent=0)
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
int	senderSignalIndex () const
virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...
Protected Variables inherited from QPlatformSoftwareCursor
QPlatformCursorImage *	graphic
Protected Variables inherited from QPlatformCursor
QPlatformScreen *	screen
Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Protected Variables inherited from QScreenCursor
QImage	cursor
uint	enable: 1
QPoint	hotspot
uint	hwaccel: 1
QPoint	pos
QSize	size
uint	supportsAlpha: 1
Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject
Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()
T *	qobject_cast (QObject *object)
	QObjectList
void *	qt_find_obj_child (QObject *parent, const char *type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 70 of file qscreenvnc_p.h.

Constructors and Destructors

QVNCCursor() [1/2]

QVNCCursor::QVNCCursor

(

QVNCScreen *

s

)

Definition at line 71 of file qscreenvnc_qws.cpp.

    : screen(s)
{
    if (qt_screencursor)
        setScreenCursor(qt_screencursor);
    else
        hwaccel = true;
}

~QVNCCursor()

QVNCCursor::~QVNCCursor

(

)

Definition at line 80 of file qscreenvnc_qws.cpp.

{
    if (screenCursor())
        qt_screencursor = screenCursor();
}

QVNCCursor() [2/2]

QVNCCursor::QVNCCursor	(	QVNCServer *	srvr,
		QVNCScreen *	scr
	)

Definition at line 56 of file qvnccursor.cpp.

        :QPlatformSoftwareCursor(scr), useVncCursor(false), server(srvr)
{
}

Functions

changeCursor()

void QVNCCursor::changeCursor ( QCursor *  widgetCursor, QWidget *  widget  )

virtual

This method is called by Qt whenever the cursor graphic should be changed.

Implementation of this method is mandatory for a subclass of QPlatformCursor.

widgetCursor is a pointer to the QCursor that should be displayed.

widget is a pointer to the widget currently displayed at QCursor::pos(). Note that this may be 0 if the current position is not occupied by a displayed widget.

See also

QCursor::pos()

Reimplemented from QPlatformSoftwareCursor.

Definition at line 61 of file qvnccursor.cpp.

{
    QPlatformSoftwareCursor::changeCursor(widgetCursor, widget);
    if (useVncCursor) {
        server->setDirtyCursor();
    } else {
        setDirty();
    }
}

clearClientCursor()

void QVNCCursor::clearClientCursor

(

)

Definition at line 90 of file qvnccursor.cpp.

Referenced by sendClientCursor().

{
    QTcpSocket *socket = server->clientSocket();
    if (!socket) {
        return;
    }
    // FramebufferUpdate header
    {
        const quint16 tmp[6] = { htons(0),
                                 htons(1),
                                 htons(0), htons(0),
                                 htons(0),
                                 htons(0) };
        socket->write((char*)tmp, sizeof(tmp));

        const quint32 encoding = htonl(-239);
        socket->write((char*)(&encoding), sizeof(encoding));
    }
}

drawCursor()

QRect QVNCCursor::drawCursor ( QPainter &  painter )

virtual

Reimplemented from QPlatformSoftwareCursor.

Definition at line 82 of file qvnccursor.cpp.

{
    if (useVncCursor)
        return QRect();

    return QPlatformSoftwareCursor::drawCursor(painter);
}

hide()

void QVNCCursor::hide ( )

virtual

Reimplemented Function

Reimplemented from QProxyScreenCursor.

Definition at line 91 of file qscreenvnc_qws.cpp.

{
    QProxyScreenCursor::hide();
    if (enable)
        setDirty(boundingRect());
}

move()

void QVNCCursor::move ( int  x, int  y  )

virtual

Reimplemented Function

Reimplemented from QProxyScreenCursor.

Definition at line 117 of file qscreenvnc_qws.cpp.

{
    if (enable && hwaccel && !screen->d_ptr->vncServer->hasClientCursor()) {
        QRegion dirty = boundingRect();
        QProxyScreenCursor::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));
        }
    } else {
        QProxyScreenCursor::move(x, y);
    }
}

sendClientCursor()

void QVNCCursor::sendClientCursor

(

)

Definition at line 110 of file qvnccursor.cpp.

{
    if (useVncCursor == false) {
        clearClientCursor();
        return;
    }
    QImage *image = graphic->image();
    if (image->isNull())
        return;
    QTcpSocket *socket = server->clientSocket();
    if (!socket) {
        return;
    }
    // FramebufferUpdate header
    {
        const quint16 tmp[6] = { htons(0),
                                 htons(1),
                                 htons(graphic->hotspot().x()), htons(graphic->hotspot().y()),
                                 htons(image->width()),
                                 htons(image->height()) };
        socket->write((char*)tmp, sizeof(tmp));

        const quint32 encoding = htonl(-239);
        socket->write((char*)(&encoding), sizeof(encoding));
    }

    // write pixels
    //Q_ASSERT(cursor->hasAlphaChannel());
    const QImage img = image->convertToFormat(QImage::Format_RGB32);
    const int n = server->clientBytesPerPixel() * img.width();
    char *buffer = new char[n];
    for (int i = 0; i < img.height(); ++i) {
        server->convertPixels(buffer, (const char*)img.scanLine(i), img.width());
        socket->write(buffer, n);
    }
    delete[] buffer;

    // write mask
    const QImage bitmap = image->createAlphaMask().convertToFormat(QImage::Format_Mono);
    Q_ASSERT(bitmap.depth() == 1);
    Q_ASSERT(bitmap.size() == img.size());
    const int width = (bitmap.width() + 7) / 8;
    for (int i = 0; i < bitmap.height(); ++i)
        socket->write((const char*)bitmap.scanLine(i), width);
}

set()

void QVNCCursor::set ( const QImage &  image, int  hotx, int  hoty  )

virtual

Reimplemented Function

Reimplemented from QProxyScreenCursor.

Definition at line 105 of file qscreenvnc_qws.cpp.

{
    QRegion dirty = boundingRect();
    QProxyScreenCursor::set(image, hotx, hoty);
    dirty |= boundingRect();
    if (enable && hwaccel && !screen->d_ptr->vncServer->hasClientCursor()) {
        const QVector<QRect> rects = dirty.rects();
        for (int i = 0; i < rects.size(); ++i)
            setDirty(rects.at(i));
    }
}

setCursorMode()

void QVNCCursor::setCursorMode

(

bool

vnc

)

Definition at line 71 of file qvnccursor.cpp.

{
    if (vnc) {
        setDirty();
        server->setDirtyCursor();
    } else {
        server->setDirtyCursor();
    }
    useVncCursor = vnc;
}

setDirty()

void QVNCCursor::setDirty ( const QRect &  r ) const

private

Definition at line 86 of file qscreenvnc_qws.cpp.

{
    screen->d_ptr->setDirty(r, true);
}

show()

void QVNCCursor::show ( )

virtual

Reimplemented Function

Reimplemented from QProxyScreenCursor.

Definition at line 98 of file qscreenvnc_qws.cpp.

{
    QProxyScreenCursor::show();
    if (enable)
        setDirty(boundingRect());
}

Properties

screen

QVNCScreen* QVNCCursor::screen

private

Definition at line 83 of file qscreenvnc_p.h.

Referenced by move(), set(), and setDirty().

server

QVNCServer* QVNCCursor::server

private

Definition at line 71 of file qvnccursor.h.

Referenced by changeCursor(), clearClientCursor(), sendClientCursor(), setCursorMode(), and QRfbEncoder::~QRfbEncoder().

useVncCursor

bool QVNCCursor::useVncCursor

private

Definition at line 69 of file qvnccursor.h.

Referenced by changeCursor(), drawCursor(), sendClientCursor(), and setCursorMode().

---

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

• /src/plugins/gfxdrivers/vnc/qscreenvnc_p.h
• /src/plugins/platforms/vnc/qvnccursor.h
• /src/plugins/gfxdrivers/vnc/qscreenvnc_qws.cpp
• /src/plugins/platforms/vnc/qvnccursor.cpp