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When resource scale is set we need to generate a scaled PangoLayout (by adding a new scale attribute, or adjusting the one we already have according the resource scale), then it has to be painted with proper scaling matrix. So everything that has to do with PangoLayout has to be in real coordinates, then clutter logical coords multiplied by resource scaling. While the actual size of the layout is the one of the PangoLayout divided by resource scale. We map the text positions to logical coords by default, while using the pixel coordinates when painting. We fall back to scale 1 when calculating preferred size if no scale is known. The pango layout will not have set a layout scale attribute, meaning it'll be 1, thus we should just assume the layout scale is 1 here. Not doing so might result in the preferred size being 0x0 meaning the actor won't be laid out properly. Fixes https://gitlab.gnome.org/GNOME/mutter/issues/135 https://bugzilla.gnome.org/show_bug.cgi?id=765011 https://gitlab.gnome.org/GNOME/mutter/merge_requests/3 |
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Outline of test categories:
The conform/ tests should be non-interactive unit-tests that verify a single
feature is behaving as documented. Use the GLib and Clutter test API and macros
to write the test units. The conformance test suites are meant to be used with
continuous integration builds.
The performance/ tests are performance tests, both focused tests testing single
metrics and larger tests. These tests are used to report one or more
performance markers for the build of Clutter. Each performance marker is picked
up from the standard output of running the tests from strings having the form
"\n@ marker-name: 42.23" where 'marker-name' and '42.23' are the key/value pairs
of a single metric. Each test can provide multiple key/value pairs. Note that
if framerate is the feedback metric the test should forcibly enable FPS
debugging itself. The file test-common.h contains utility function helping to
do fps reporting.
The interactive/ tests are any tests whose status can not be determined without
a user looking at some visual output, or providing some manual input etc. This
covers most of the original Clutter tests. Ideally some of these tests will be
migrated into the conform/ directory.
The accessibility/ tests are tests created to test the accessibility support of
clutter, testing some of the atk interfaces.
Other notes:
• All tests should ideally include a detailed description in the source
explaining exactly what the test is for, how the test was designed to work,
and possibly a rationale for the approach taken for testing. Tests for specific
bugs should reference the bug report URL or number.
• When running tests under Valgrind, you should follow the instructions
available here:
https://wiki.gnome.org/Valgrind
and also use the suppression file available in the Git repository.