psadaic / qapng

apng image plugin for Qt to support animated PNGs

qapng

apng image plugin for Qt to support animated PNGs

Features

Enable the usage of apng images with Qt. The plugin adds the apng format as a new format for any Qt application, and thus supports loading of apng images via QMovie, AnimatedImage and other types.

Requirements

To build the plugin, libpng with the apng patch applied is required. If your system does not provide the patched library, you can use the build_libpng_static.sh script to download and build it statically, and automatically set up the project to use this static libpng version for compilation.

Download/Installation

1. Arch-Linux only: If you are building against your system Qt, you can use my AUR-Repository: qt5-apng-plugin
2. Build it yourself! Note: This requires perl to be installed. If you don't have/need cmake, you can ignore the related warnings. To automatically build and install to your Qt installation, run:
   • qmake -r
   • make
   • make install

Usage

Simply use the default Qt classes like QImageReader, QMovie etc.

Format Detection:
Since the png format is already used by Qt, *.png files will not use the plugin. To load a png as animated, you can either rename the file to *.apng, or set the format explicitly

QMovie movie("path/to/image.png", "apng");