It is a test task for CQG.

First you need to install following packages:

sudo apt-get install freeglut3-dev libxi-dev libxmu-dev cmake

Build by cmake:

# create build directory
mkdir build
# enter it
cd build
# generate makefile using Cmake
cmake ..
# build
make

Run:

./mypaint

You have 3 windows:

• Picture
• Palette
• Toolbox

Note: If you'll close one of the windows by "X", all windows will be closed.

This is a window for drawing. Here you place figures.

In this window you can select drawing color. First scale is a shade. Second scale is brightness - from black to selected shade color. Third is lightness - from color selected on second scale to white.

Here you can select drawing instrument (pencil, line, ellipse, rectangle), line width, transparency level, etc.

Pencil doesn't support line width