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This crate only takes care of fonts now as graphics related things are
split into other crates. In addition, this exposes data structures at
the top of the crate, hiding the implementation details and making it
simpler to import them.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
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Disable some code for Windows, which is causing build warnings. When it
cannot be easily disabled (mainly for the incomplete BHM and sandbox
feature), allow dead code.
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On platforms that ship Noto, the list of fallback fonts can be shared.
This reduces code duplcation and makes it easier to keep up to date with
changes in Noto.
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* Add OpenHarmony support for allocator / profile
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* gfx: Build harfbuzz from source on OHOS
Updates `freetype-sys` to v0.20.1, which includes a build
fix for OpenHarmony.
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* gfx: Don't depend on fontconfig on OpenHarmony
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* gfx: Add ohos font fallback
Hardcode HarmonyOS_Sans_SC_Regular for Chinese
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* libservo: OHOS useragent, and explicitly opt out of sandboxing
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* libservo: Disable get_native_media_display_and_gl_context on ohos
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
---------
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
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This change reworks the way that platform fonts are created and
descriptor data is on `FontTemplate` is initialized.
The main change here is that platform fonts for local font faces are
always initialized using the font data loaded into memory from disk.
This means that there is now only a single path for creating platform
fonts.
In addition, the font list is now responsible for getting the
`FontTemplateDescriptor` for local `FontTemplate`s. Before the font had
to be loaded into memory to get the weight, style, and width used for
the descriptor. This is what fonts lists are for though, so for every
platform we have that information before needing to load the font. In
the future, hopefully this will allow discarding fonts before needing to
load them into memory. Web fonts still get the descriptor from the
platform handle, but hopefully that can be done with skrifa in the
future.
Thsese two fixes together allow properly loading indexed font variations
on Linux machines. Before only the first variation could be
instantiated.
Fixes https://github.com/servo/servo/issues/13317.
Fixes https://github.com/servo/servo/issues/24554.
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
----
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #13317 and #24554
- [x] There are tests for these changes
---------
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
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Now that `FontTemplateData` is more or less the same on all platforms,
it can be removed. This is a preparatory change for a full refactor of
the font system on Servo. The major changes here are:
- Remove `FontTemplateData` and move its members into `FontTemplate`
- Make `FontTemplate` have full interior mutability instead of only
the `FontTemplateData` member. This is preparation for having these
data types `Send` and `Sync` with locking.
- Remove the strong/weak reference concept for font data. In practice,
all font data references were strong, so this was never fully
complete. Instead of using this approach, the new font system will
use a central font data cache with references associated to layouts.
- The `CTFont` cache is now a global cache, so `CTFont`s can be shared
between threads. The cache is cleared when clearing font caches.
A benefit of this change (apart from `CTFont` sharing) is that font data
loading is platform-independent now.
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The `FontContextHandle` was really only used on FreeType platforms to
store the `FT_Library` handle to use for creating faces. Each
`FontContext` and `FontCacheThread` would create its own
`FontContextHandle`. This change removes this data structure in favor of
a mutex-protected shared `FontContextHandle` for an entire Servo
process. The handle is initialized using a `OnceLock` to ensure that it
only happens once and also that it stays alive for the entire process
lifetime.
In addition to greatly simplifying the code, this will make it possible
for different threads to share platform-specific `FontHandle`s, avoiding
multiple allocations for a single font.
The only downside to all of this is that memory usage of FreeType fonts
isn't measured (though the mechanism is still there). This is because
the `FontCacheThread` currently doesn't do any memory measurement.
Eventually this *will* happen though, during the font system redesign.
In exchange, this should reduce the memory usage since there is only a
single FreeType library loaded into memory now.
This is part of #32033.
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* strict imports formatting
* Reformat all imports
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system font configuration files.
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This uses a (very simple) Win32 API call to enumerate font
families available, and load them as byte buffers.
The font rasterization itself is done by freetype.
This gets Servo + WR + Windows working, but should be improved
by adding a proper implementation that matches fonts correctly
and also uses DirectWrite (or GDI) to handle font rasterization.
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