NAMEQPNGImagePacker - 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 )
DESCRIPTIONThe 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, INTconversionflags ) 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//doc.trolltech.com/qpngimagepacker.html //www.trolltech.com/faq/tech.html
COPYRIGHTCopyright 1992-2007 Trolltech ASA, //www.trolltech.com. See the license file included in the distribution for a complete license statement.
AUTHORGenerated automatically from the source code.
BUGSIf you find a bug in Qt, please report it as described in //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- firstname.lastname@example.org. Please include the name of the manual page (qpngimagepacker.3qt) and the Qt version (3.3.8). QPNGIMAGEPACKER(3)