During the destructor of QWidget, we delete the
layout. If the layout is not set to 0 afterwards,
a check on the layout might turn true, but any access
will end with a segfault.
Reviewed-by: João Abecasis
(cherry picked from commit abc5a632942c23496d75c49b3b0b4a674cdafdf8)
The SPI_FONTSMOOTHINGCONTRAST macro is not defined everywhere. When
the code was refactored, the workaround for this was lost. This
resubmits the work-around to make it compile.
Reviewed-by: Samuel
(cherry picked from commit 4c3630c1fcd2b3008f540a8906a19c533604f36a)
If the SRGB framebuffer extension in GL is available, we can support
gamma correction of text with a gamma of 2.1. On Mac this is
sufficient for gamma correcting subpixel antialiased text. Gray
antialiasing should not be gamma corrected on Mac.
On Windows, the user can potentially set the gamma value to anything
between 1.0 and 2.2 (or something like that). We support anything
that resembles 1.0 closely enough by pushing the text out without
any correction (like before). We also support anything that resembles
2.1 (the gamma hardcoded in GL's SRGB extension) by turning on the
extension before blending the text. In between the two, we'll use
gray antialiasing to avoid differing too much from the raster engine
(which is our reference in this.)
For gray antialiasing on Windows, we use a constant gamma of 2.3 which
has been determined by experimentation. Since this is close enough to
2.1 we do gamma correction with SRGB extension.
The distance limit of 0.2 is determined by some experimentation.
Reviewed-by: Samuel
(cherry picked from commit 79ba7cceca5e4029876ace2121edd25b08ae14ce)
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
Fabien Freling
Laszlo Agocs
Eskil Abrahamsen Blomfeldt
Jørgen Lind
Qt by Nokia