In order to examine real colors of pixels we need to have unmodified (aliased) edges between regions drawn with different colors.
For for wxDCs backed by wxGraphicsContext (e.g. under wxGTK3) antialiasing is enabled by default and to prevent falsifying pixel colors we have to disable it prior to drawing operations.
See #17666.
Under wxGTK3 default color depth for wxBitmap is 24 bpp and therefore wxAlphaPixelData cannot be used to get access to wxBitmap's internal data in this case.
See #17666.
The unit test added in 607b800444 didn't work on
the systems using 32 bpp screens, i.e. almost all of them, because it tried to
use 24 bpp wxNativePixelData with them.
Fix this by using wxAlphaPixelData, which won't work on non 32 bpp systems,
and so is still not ideal, but at least makes the test work on most systems by
default.
See #17666.
The unit test added in 607b800444 had a bug as
it tried to use the bitmap directly while it was still selected into a
wxMemoryDC, which wasn't guaranteed to work and resulted in an assert.
Fix this by destroying wxMemoryDC earlier.
See #17666.
This keyword is not expanded by Git which means it's not replaced with the
correct revision value in the releases made using git-based scripts and it's
confusing to have lines with unexpanded "$Id$" in the released files. As
expanding them with Git is not that simple (it could be done with git archive
and export-subst attribute) and there are not many benefits in having them in
the first place, just remove all these lines.
If nothing else, this will make an eventual transition to Git simpler.
Closes#14487.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
