GFXprim is Open-source modular 2D bitmap graphics library with emphasis on speed and correctness. It comes batteries included, but free from bloat.
It includes:
- Graphical user interface widgets with object hierarchy and declarative layouts.
- Clean and non-intrusive implementations of elementary data structures.
- Multiple rendering backends supporting desktop to embedded.
- Integrations with many image loaders.
- Image filters
- Sample applications including image and PDF viewers.
- Many tests
See http://gfxprim.ucw.cz for details.