QPlatformSoftwareCursor Class Reference

#include <fb_base.h>

Inheritance diagram for QPlatformSoftwareCursor:

Public Functions
virtual void	changeCursor (QCursor *widgetCursor, QWidget *widget)
	This method is called by Qt whenever the cursor graphic should be changed. More...
QRect	dirtyRect ()
virtual QRect	drawCursor (QPainter &painter)
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...

Protected Variables
QPlatformCursorImage *	graphic
Protected Variables inherited from QPlatformCursor
QPlatformScreen *	screen
Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Private Functions
QRect	getCurrentRect ()
void	setCursor (const uchar *data, const uchar *mask, int width, int height, int hotX, int hotY)
void	setCursor (Qt::CursorShape shape)
void	setCursor (const QImage &image, int hotx, int hoty)

Properties
QRect	currentRect
bool	dirty
bool	onScreen
QRect	prevRect

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 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...
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 60 of file fb_base.h.

Constructors and Destructors

QPlatformSoftwareCursor()

QPlatformSoftwareCursor::QPlatformSoftwareCursor

(

QPlatformScreen *

scr

)

Definition at line 49 of file fb_base.cpp.

        : QPlatformCursor(scr), currentRect(QRect()), prevRect(QRect())
{
    graphic = new QPlatformCursorImage(0, 0, 0, 0, 0, 0);
    setCursor(Qt::ArrowCursor);
}

Functions

changeCursor()

void QPlatformSoftwareCursor::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()

Implements QPlatformCursor.

Reimplemented in QVNCCursor.

Definition at line 120 of file fb_base.cpp.

Referenced by QVNCCursor::changeCursor().

{
#ifdef QT_NO_CURSOR
    Q_UNUSED(widgetCursor);
    Q_UNUSED(widget);
#else
    Q_UNUSED(widget);
    Qt::CursorShape shape = widgetCursor->shape();

    if (shape == Qt::BitmapCursor) {
        // application supplied cursor
        QPoint spot = widgetCursor->hotSpot();
        setCursor(widgetCursor->pixmap().toImage(), spot.x(), spot.y());
    } else {
        // system cursor
        setCursor(shape);
    }
    currentRect = getCurrentRect();
    QPoint screenOffset = screen->geometry().topLeft(); // global to local translation
    if (onScreen || screen->geometry().intersects(currentRect.translated(screenOffset)))
        setDirty();
#endif
}

dirtyRect()

QRect QPlatformSoftwareCursor::dirtyRect

(

)

Definition at line 96 of file fb_base.cpp.

Referenced by QFbScreen::doRedraw().

{
    if (onScreen) {
        onScreen = false;
        return prevRect;
    }
    return QRect();
}

drawCursor()

QRect QPlatformSoftwareCursor::drawCursor ( QPainter &  painter )

virtual

Reimplemented in QVNCCursor.

Definition at line 78 of file fb_base.cpp.

Referenced by QFbScreen::doRedraw(), and QVNCCursor::drawCursor().

{
    dirty = false;
    if (currentRect.isNull())
        return QRect();

    // We need this because the cursor might be dirty due to moving off screen
    QPoint screenOffset = screen->geometry().topLeft();
    // global to local translation
    if (!currentRect.translated(screenOffset).intersects(screen->geometry()))
        return QRect();

    prevRect = currentRect;
    painter.drawImage(prevRect, *graphic->image());
    onScreen = true;
    return prevRect;
}

getCurrentRect()

QRect QPlatformSoftwareCursor::getCurrentRect ( )

private

Definition at line 56 of file fb_base.cpp.

Referenced by changeCursor(), and pointerEvent().

{
    QRect rect = graphic->image()->rect().translated(-graphic->hotspot().x(),
                                                     -graphic->hotspot().y());
    rect.translate(QCursor::pos());
    QPoint screenOffset = screen->geometry().topLeft();
    rect.translate(-screenOffset);  // global to local translation
    return rect;
}

isDirty()

virtual bool QPlatformSoftwareCursor::isDirty ( )

inlinevirtual

Definition at line 74 of file fb_base.h.

Referenced by QFbScreen::doRedraw().

{ return dirty; }

isOnScreen()

virtual bool QPlatformSoftwareCursor::isOnScreen ( )

inlinevirtual

Definition at line 75 of file fb_base.h.

Referenced by QFbScreen::doRedraw().

{ return onScreen; }

lastPainted()

virtual QRect QPlatformSoftwareCursor::lastPainted ( )

inlinevirtual

Definition at line 76 of file fb_base.h.

Referenced by QFbScreen::doRedraw().

{ return prevRect; }

pointerEvent()

void QPlatformSoftwareCursor::pointerEvent ( const QMouseEvent &  event )

virtual

This method is called by Qt whenever a QMouseEvent is generated by the underlying pointer input.

event is a reference to the QMouseEvent in question. A default do-nothing implementation is provided.

Reimplemented from QPlatformCursor.

Definition at line 67 of file fb_base.cpp.

Referenced by QVNCServer::hasClientCursor(), and QVNCServer::setCursor().

{
    Q_UNUSED(e);
    QPoint screenOffset = screen->geometry().topLeft();
    currentRect = getCurrentRect();
    // global to local translation
    if (onScreen || screen->geometry().intersects(currentRect.translated(screenOffset))) {
        setDirty();
    }
}

setCursor() [1/3]

void QPlatformSoftwareCursor::setCursor ( const uchar *  data, const uchar *  mask, int  width, int  height, int  hotX, int  hotY  )

private

Definition at line 115 of file fb_base.cpp.

Referenced by changeCursor(), and QPlatformSoftwareCursor().

{
    graphic->set(data, mask, width, height, hotX, hotY);
}

setCursor() [2/3]

void QPlatformSoftwareCursor::setCursor ( Qt::CursorShape  shape )

private

Definition at line 105 of file fb_base.cpp.

{
    graphic->set(shape);
}

setCursor() [3/3]

void QPlatformSoftwareCursor::setCursor ( const QImage &  image, int  hotx, int  hoty  )

private

Definition at line 110 of file fb_base.cpp.

{
    graphic->set(image, hotx, hoty);
}

setDirty()

virtual void QPlatformSoftwareCursor::setDirty ( )

inlinevirtual

Definition at line 73 of file fb_base.h.

Referenced by QVNCCursor::changeCursor(), changeCursor(), QVNCCursor::hide(), QVNCCursor::move(), QFbScreen::physicalSize(), pointerEvent(), QVNCCursor::set(), QVNCCursor::setCursorMode(), QVNCServer::setDirtyCursor(), QVNCCursor::show(), and QVNCDirtyMapOptimized< T >::~QVNCDirtyMapOptimized().

{ dirty = true; screen->setDirty(QRect()); }

Properties

currentRect

QRect QPlatformSoftwareCursor::currentRect

private

Definition at line 85 of file fb_base.h.

Referenced by changeCursor(), drawCursor(), and pointerEvent().

dirty

bool QPlatformSoftwareCursor::dirty

private

Definition at line 88 of file fb_base.h.

Referenced by drawCursor(), isDirty(), QVNCCursor::move(), QVNCCursor::set(), and setDirty().

graphic

QPlatformCursorImage* QPlatformSoftwareCursor::graphic

protected

Definition at line 79 of file fb_base.h.

Referenced by drawCursor(), getCurrentRect(), QPlatformSoftwareCursor(), QVNCCursor::sendClientCursor(), and setCursor().

onScreen

bool QPlatformSoftwareCursor::onScreen

private

Definition at line 89 of file fb_base.h.

Referenced by changeCursor(), dirtyRect(), drawCursor(), isOnScreen(), and pointerEvent().

prevRect

QRect QPlatformSoftwareCursor::prevRect

private

Definition at line 86 of file fb_base.h.

Referenced by dirtyRect(), drawCursor(), and lastPainted().

---

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

• /src/plugins/platforms/fb_base/fb_base.h
• /src/plugins/platforms/fb_base/fb_base.cpp