The font features demo started calling the Harfbuzz API directly
starting from commit 9de3b24c20. Harfbuzz
is an implicit dependency of Pango on some platforms, but it's not part
of the public dependencies; this means that we cannot expect to link to
Pango and automatically get Harfbuzz symbols to link against —
especially when things like --as-needed are in play.
This change triggered build failures on non-Unix platforms, fixed by
commit 2a9967731a, as well as build
failures in Continuous, with this error message:
/usr/lib/gcc/x86_64-gnomeostree-linux/4.9.3/../../../../x86_64-gnomeostree-linux/bin/ld:
font_features.o: undefined reference to symbol 'hb_tag_to_string'
//lib/libharfbuzz.so.0: error adding symbols: DSO missing from command
line
collect2: error: ld returned 1 exit status
In order to get the font features demo to build everywhere we should
take an explicit, though optional, check on Harfbuzz, and conditionally
build the font features demo with the right compiler and linker flags.
The fonts features demo now uses fontconfig APIs via PangoFT2, which makes
the code not build on non-Linux, so only include this demo in the build
on UNIX.
Add more features to the list, allow selecting script/language
from the set that is supported by the font, indicate which
features are present in the font for the selected script/language,
and expand the default specimen to cover latin, cyrillic and
greek.
It looks like the gnome-continuous headers haven't quite
caught up yet, so try __NR_memfd_create instead.
If that doesn't work, i'll likely just add in a fallback
code path.
The tmpdir is used for a wide assortment of things, and
can easily fill up. If it fills then desktop will start
crashing with SIGBUS errors.
This commit changes the shm pool allocation code, to use
memfd_create, instead, so the shared memory files will
be anonymous and not associated with /tmp
https://bugzilla.gnome.org/show_bug.cgi?id=761095
(1) Keep priv->text_allocation for the area used by the text
(2) Compute all text coordinates with the help of priv->text_allocation
As a side effect the get_text_area_size and get_frame_size vfuncs are
now unused. If we wanted them back, they should get a single use durig
size_allocate() and then their results should be stored for further
processing.
This complicates refactorings, so remove that feature. It's not used
anywhere and doesn't play well with nodes the way it's implemented.
If we want it back, we can add it back later.
Changing the visibility of child widgets in size-allocate does
not work well with out current allocation and layout machinery.
To avoid the visual fallout, just keep the arrow buttons visible
and only change their sensitivity.
https://bugzilla.gnome.org/show_bug.cgi?id=754868
We don't want to let baseline adjustment shift the child
out of the original allocation. This is purely a sanity
measure - in practice, the baseline should always be bigger
than the child_baseline.
