Referencia de la Clase QwtPaintBuffer

Paint buffer for Qwt widgets. Más...

#include <qwt_paint_buffer.h>

Lista de todos los miembros.

Métodos públicos
	QwtPaintBuffer ()
	Default constructor.
	QwtPaintBuffer (QPaintDevice *, const QRect &, QPainter *p=NULL)
virtual	~QwtPaintBuffer ()
void	open (QPaintDevice *, const QRect &, QPainter *p=NULL)
void	close ()
QPainter *	painter ()
const QPaintDevice *	device ()
const QPixmap &	buffer () const
	Return Buffer used for double buffering.
Métodos públicos estáticos
static void	setEnabled (bool enable)
static bool	isEnabled ()
Métodos protegidos
void	flush ()

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Descripción detallada

Paint buffer for Qwt widgets.

QwtPaintBuffer offers a simple way to en/disable double buffering. Double buffering is enabled as default and in general there will be no reason to change this.

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Documentación del constructor y destructor

QwtPaintBuffer::QwtPaintBuffer

(

)

[explicit]

Default constructor.

QwtPaintBuffer::QwtPaintBuffer	(	QPaintDevice *	device,
		const QRect &	rect,
		QPainter *	painter = NULL
	)		[explicit]

Create an open paint buffer

Parámetros:

device	Device to paint on
rect	Rect to paint on
painter	Painter to paint on device. In case of 0 QwtPaintBuffer uses an internal painter

Ver también:

open()

QwtPaintBuffer::~QwtPaintBuffer

(

)

[virtual]

Closes the buffer

Ver también:

close()

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Documentación de las funciones miembro

const QPixmap& QwtPaintBuffer::buffer

(

)

const [inline]

Return Buffer used for double buffering.

void QwtPaintBuffer::close

(

void

)

Flush the internal pixmap buffer to the device and close the buffer.

const QPaintDevice * QwtPaintBuffer::device

(

)

Devuelve:

Device to paint on

void QwtPaintBuffer::flush

(

)

[protected]

Flush the internal pixmap buffer to the device.

bool QwtPaintBuffer::isEnabled

(

)

[static]

Devuelve:

true if double buffering is enabled, false otherwise.

void QwtPaintBuffer::open	(	QPaintDevice *	device,
		const QRect &	rect,
		QPainter *	painter = NULL
	)

Open the buffer

Parámetros:

device	Device to paint on
rect	Rect to paint on
painter	Painter to paint on device. In case of 0 QwtPaintBuffer uses an internal painter

QPainter * QwtPaintBuffer::painter

(

)

Devuelve:

Depending on isEnabled() the painter connected to an internal pixmap buffer otherwise the painter connected to the device.

void QwtPaintBuffer::setEnabled

(

bool

enable

)

[static]

Enable/Disable double buffering. Please note that this is a global switch for all QwtPaintBuffers, but won't change opened buffers.

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La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qwt/src/qwt_paint_buffer.h
• src/qwt/src/qwt_paint_buffer.cpp