Referencia de la Clase QPNGImagePacker

The QPNGImagePacker class creates well-compressed PNG animations. Más...

#include <qpngio.h>

Diagrama de herencias de QPNGImagePacker

Lista de todos los miembros.

Métodos públicos
	QPNGImagePacker (QIODevice *, int depth, int convflags)
void	setPixelAlignment (int x)
bool	packImage (const QImage &img)
	QPNGImagePacker (QIODevice *, int depth, int convflags)
void	setPixelAlignment (int x)
bool	packImage (const QImage &img)

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Descripción detallada

The QPNGImagePacker class creates well-compressed PNG animations.

By using transparency, QPNGImagePacker allows you to build a PNG image from a sequence of QImages.

Images are added using packImage().

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Documentación del constructor y destructor

QPNGImagePacker::QPNGImagePacker	(	QIODevice *	iod,
		int	storage_depth,
		int	conversionflags
	)

Creates an image packer that writes PNG data to IO device iod using a storage_depth bit encoding (use 8 or 32, depending on the desired quality and compression requirements).

If the image needs to be modified to fit in a lower-resolution result (e.g. converting from 32-bit to 8-bit), use the conversionflags to specify how you'd prefer this to happen.

Ver también:

Qt::ImageConversionFlags

QPNGImagePacker::QPNGImagePacker	(	QIODevice *	,
		int	depth,
		int	convflags
	)

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Documentación de las funciones miembro

bool QPNGImagePacker::packImage

(

const QImage &

img

)

Adds the image img to the PNG animation, analyzing the differences between this and the previous image to improve compression.

bool QPNGImagePacker::packImage

(

const QImage &

img

)

void QPNGImagePacker::setPixelAlignment

(

int

x

)

void QPNGImagePacker::setPixelAlignment

(

int

x

)

Aligns pixel differences to x pixels. For example, using 8 can improve playback on certain hardware. Normally the default of 1-pixel alignment (i.e. no alignment) gives better compression and performance.

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

• src/qt/include/qpngio.h
• src/qt/src/kernel/qpngio.h
• src/qt/src/kernel/qpngio.cpp