About Tux Paint
Tux Paint is a free, award-winning drawing program for children ages 3 to 12 (for example, preschool and K-6). It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program.
Kids are presented with a blank canvas and a variety of drawing tools to help them be creative. (See the full list of features from http://tuxpaint.org/features/)
About Scratch Magic Tool
This is a Magic Tool for Tux Paint that provides an effect to the image on canvas as if it were scratched.
On Ubuntu you might need to install the following development libs to compile the plugin
sudo apt-get install libsdl1.2-dev libsdl-image1.2-dev libsdl-mixer1.2-dev libsdl-pango-dev libsdl-sound1.2-dev libsdl-ttf2.0-dev libfribidi-dev librsvg2-dev libpaper-dev
Download and compile (run
make) Tux Paint source code from http://www.tuxpaint.org/download/source/. Do
sudo make install to install TuxPaint on your system.
Compiling and Installing the Magic Tool
To compile run,
sudo make install