Use enum class and other C++11 means to improve code quality.
Recommendation from Krita: https://community.kde.org/Krita/C%2B%2B11#enum_class
Description
Description
Use enum class and other C++11 means to improve code quality.
Recommendation from Krita: https://community.kde.org/Krita/C%2B%2B11#enum_class