Instead of having the copy constructor convert to display format, the new
copy constructor preserves the pixel format and a separate method was
introduced to convert surfaces to display format.
The code was made more robust as well: it should no longer crash if the
wallpaper cannot be loaded.
I cheated a bit by declaring ASFont as friend, but all other outside
access now happens via methods.
I removed the "saveScreenshot" method since the code calling it is
commented out and I never heard anyone complain about missing this
feature.
If loading fails, the factory method returns NULL, while previously the
constructor would create a Surface object with a NULL "raw" field.
However, since most of the methods dereference "raw" without checking,
such a Surface would likely crash the application when used.
The unnecessary alpha channel might harm performance but is not a big deal.
However, the fact that the alpha flag (bool) is somehow automatically
converted by C++ into a skin name (string) causes the entire screen to
stay black.
The black screen was fixed by removing the alpha flag.
For optimum blitting performance, the wallpaper surface is then converted
to the pixel format of the frame buffer.
Bug was introduced in 52c89d6005.
Although exposing a read/write reference to a private field is not much better than having a public field.
Well, at least we are explicit about the nasty stuff now.
