Also ensure we consistently use the original-case family name in FontNameCache entries,
and only lowercase it to a "key" for lookup/insertion into the font list. This avoids
failures in test_font_whitelist.html due to inconsistency in whether family names have
been lowercased.
Differential Revision: https://phabricator.services.mozilla.com/D36112
--HG--
extra : moz-landing-system : lando
This is the main part of the implementation, except that it doesn't handle populating the
local names table (for @font-face src:local() lookups) with Full and PostScript names;
that follows in the next patch.
Differential Revision: https://phabricator.services.mozilla.com/D36110
--HG--
extra : moz-landing-system : lando
I'll need to add a couple of extra fields to the cache records, and realized that the current format
looks really fragile; in theory, it'd break if a font name ever contained a comma or semicolon
(unlikely though that may be). So let's fix it to be a bit more robust before we add to it further.
Using control characters from the C0 range to delimit fields/records, instead of ASCII punctuation,
removes the (tiny) risk of conflict with characters that actually occur in a name, and using
distinct field and record separators means that we can better check that the records we're loading
from the cache actually match the expected format.
(Given that the startup cache gets re-created when the build ID is updated, a change in the format
between versions wasn't going to cause problems for users; their old cache just gets blown away
when upgrading. Still, a little more robustness seems like a good thing.)
Differential Revision: https://phabricator.services.mozilla.com/D36109
--HG--
extra : moz-landing-system : lando
This makes the functional structure a bit cleaner, so that it'll be easier to slip in the alternative
codepath for the shared font-list.
Differential Revision: https://phabricator.services.mozilla.com/D36108
--HG--
extra : moz-landing-system : lando
A bit of cleanup of the existing code, before we start actually implementing new stuff.
Differential Revision: https://phabricator.services.mozilla.com/D36107
--HG--
extra : moz-landing-system : lando
This isn't really specific to the FT2 fontlist, it's a general fixup that I noticed while
working on this. (The missing checks aren't crucial, but mean that we might re-read a cmap
when we shouldn't need to.)
Differential Revision: https://phabricator.services.mozilla.com/D36106
--HG--
extra : moz-landing-system : lando
Only the parent process ever respects the renderroot attribute, so we can
add some extra early-exit checks for this. This also adds a bit of safety
for the next patch, to avoid inadvertently exposing renderroot stuff to
web content.
Also, the GetRenderRootForElement function is only ever called by the
GetRenderRootForFrame function, so let's scope it down to avoid doing
unnecessary work.
Differential Revision: https://phabricator.services.mozilla.com/D37504
--HG--
extra : moz-landing-system : lando
When double buffering is enable with compositor, DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL is used without DirectComposition. There are some devices that swap chain with DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL does not work well. In this case, device reset happens very often. To avoid the situation, the double buffering needs to be disabled when device reset happens.
Differential Revision: https://phabricator.services.mozilla.com/D36579
--HG--
extra : moz-landing-system : lando
This implements the machinery for the splitting of static prefs headers, and
uses it for a single header. #includes are used in such a way that the amount
of boilerplate for each static prefs header file is minimal.
Future patches will split the remaining prefs into more header files.
Differential Revision: https://phabricator.services.mozilla.com/D36154
--HG--
rename : modules/libpref/StaticPrefs.h => modules/libpref/StaticPrefsBase.h
rename : modules/libpref/StaticPrefs.h => modules/libpref/init/StaticPrefListBegin.h
extra : moz-landing-system : lando
And with this, all tests pass on tryserver when the shared list is enabled.
Differential Revision: https://phabricator.services.mozilla.com/D36112
--HG--
extra : moz-landing-system : lando
This is the main part of the implementation, except that it doesn't handle populating the
local names table (for @font-face src:local() lookups) with Full and PostScript names;
that follows in the next patch.
Differential Revision: https://phabricator.services.mozilla.com/D36110
--HG--
extra : moz-landing-system : lando
I'll need to add a couple of extra fields to the cache records, and realized that the current format
looks really fragile; in theory, it'd break if a font name ever contained a comma or semicolon
(unlikely though that may be). So let's fix it to be a bit more robust before we add to it further.
Using control characters from the C0 range to delimit fields/records, instead of ASCII punctuation,
removes the (tiny) risk of conflict with characters that actually occur in a name, and using
distinct field and record separators means that we can better check that the records we're loading
from the cache actually match the expected format.
(Given that the startup cache gets re-created when the build ID is updated, a change in the format
between versions wasn't going to cause problems for users; their old cache just gets blown away
when upgrading. Still, a little more robustness seems like a good thing.)
Differential Revision: https://phabricator.services.mozilla.com/D36109
--HG--
extra : moz-landing-system : lando
This makes the functional structure a bit cleaner, so that it'll be easier to slip in the alternative
codepath for the shared font-list.
Differential Revision: https://phabricator.services.mozilla.com/D36108
--HG--
extra : moz-landing-system : lando
A bit of cleanup of the existing code, before we start actually implementing new stuff.
Differential Revision: https://phabricator.services.mozilla.com/D36107
--HG--
extra : moz-landing-system : lando
This isn't really specific to the FT2 fontlist, it's a general fixup that I noticed while
working on this. (The missing checks aren't crucial, but mean that we might re-read a cmap
when we shouldn't need to.)
Differential Revision: https://phabricator.services.mozilla.com/D36106
--HG--
extra : moz-landing-system : lando
The original patch in bug 1422530 checked whether we're currently hiding a given piece of text
because we're waiting for a resource to download, and used this as a signal that we should not
initiate another download.
However, that's not really a good criterion to use when we're doing font selection for a given
character, both because it's an indirect signal -- whether painting the text is suppressed will
depend on timing and the font-display property -- and because it doesn't consider whether any
resource that's already being downloaded will actually be relevant for the specific character
we're trying to display.
So this patch instead checks for a relevant in-progress load earlier in the font list during
the specific FindFontForChar call, so that when unicode-range is used to split a font across
multiple subsets, an in-progress load for one subset won't make us defer the downloads of other
subsets if they are also needed for the characters present in the text.
With this, the repeated blinking no longer happens on the site here, as loading of all the
required font subsets is initiated early.
Differential Revision: https://phabricator.services.mozilla.com/D35634
--HG--
extra : moz-landing-system : lando
This uses positive-but-empty #if conditions with else clauses rather than
inverted conditions for better readability and documentation.
Differential Revision: https://phabricator.services.mozilla.com/D37083
--HG--
extra : moz-landing-system : lando
