QPNGImagePacker(3qt)QPNGImagePacker(3qt)NAMEQPNGImagePacker - Creates well-compressed PNG animations
#include <qpngio.h>
Inherits QPNGImageWriter.
Public Members
QPNGImagePacker ( QIODevice *, int depth, int convflags )
void setPixelAlignment ( int x )
bool packImage ( const QImage & img )
DESCRIPTION
Creates well-compressed PNG animations.
By using transparency, QPNGImagePacker allows you to build
a PNG image from a sequence of QImages.
MEMBER FUNCTION DOCUMENTATIONQPNGImagePacker::QPNGImagePacker ( QIODevice * iod, int
storage_depth, int conversionflags )
Create an image packer that writes PNG data to iod, using
a storage_depth bit encoding (use 8 or 32, depending on
the desired quality and compression requirements).
bool QPNGImagePacker::packImage ( const QImage & img )
Add the image img to the PNG animation, analyzing the
differences between this and the previous image to improve
compression.
void QPNGImagePacker::setPixelAlignment ( int x )
Align pixel differences to x pixels. For example, using 8
can improve playback on certain hardware. Normally the
default of 1-pixel alignment (ie. no alignment) gives bets
compression and performance.
SEE ALSO
http://doc.trolltech.com/qpngimagepacker.html
http://www.trolltech.com/faq/tech.html
COPYRIGHT
Copyright 1992-2001 Trolltech AS,
http://www.trolltech.com. See the license file included
in the distribution for a complete license statement.
AUTHOR
Generated automatically from the source code.
BUGS
If you find a bug in Qt, please report it as described in
http://doc.trolltech.com/bughowto.html. Good bug reports
make our job much simpler. Thank you.
Trolltech AS 13 June 2001 1
QPNGImagePacker(3qt)QPNGImagePacker(3qt)
In case of content or formattting problems with this
manual page, please report them to qt-bugs@trolltech.com.
Please include the name of the manual page
(qpngimagepacker.3qt) and the Qt version (2.3.1).
Trolltech AS 13 June 2001 2
