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QPNGImagePacker(3qt)							     QPNGImagePacker(3qt)

NAME
       QPNGImagePacker - Creates well-compressed PNG animations

SYNOPSIS
       #include <qpngio.h>

   Public Members
       QPNGImagePacker ( QIODevice * iod, int storage_depth, int conversionflags )
       void setPixelAlignment ( int x )
       bool packImage ( const QImage & img )

DESCRIPTION
       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().

       See also Graphics Classes and Image Processing Classes.

MEMBER FUNCTION DOCUMENTATION
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.

       See also Qt::ImageConversionFlags.

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.

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.

SEE ALSO
       http://doc.trolltech.com/qpngimagepacker.html http://www.trolltech.com/faq/tech.html

COPYRIGHT
       Copyright 1992-2007 Trolltech ASA, 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 help us to help you. Thank you.

       The definitive Qt documentation is provided in HTML format; it is located at
       $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is
       provided as a convenience for those users who prefer man pages, although this format is
       not officially supported by Trolltech.

       If you find errors in 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
       (3.3.8).

Trolltech AS				 2 February 2007		     QPNGImagePacker(3qt)
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