Here is a list of all files with brief descriptions:

mypaint-brush-settings-gen.h
mypaint-brush-settings.h
mypaint-brush.h
mypaint-config.h
mypaint-fixed-tiled-surface.h
mypaint-glib-compat.h
mypaint-mapping.h
mypaint-matrix.h
mypaint-rectangle.h
mypaint-surface.h
mypaint-symmetry.h
mypaint-tiled-surface.h
mypaint.h