Previously if a font didn't have a space advance and it was needed to
make advances for tabs, Servo would try to read the advance from the
font. If the font didn't have a space glyph, Servo would panic. This
fixes that issue by making the space advance part of the `FontMetrics`
of a font (like Gecko) and falling back properly if that glyph doesn't
exist. The rendered glyph is still the "space" glyph, but we make
sure to select a font that supports that glyph explicitly.
This prevents a crash, but tabs still aren't handled properly. In
reality, tab stops should be calculated in layout and the size of
the space character of the current font shouldn't come into play.
The addition of the space advance metric will make this easier.
Fixes#32970.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
* ohos: Add `ohos_mock` cfg.
This allows using the Linux build together with the `ohos`
font code, using the fonts ship in the `previewer` directory of the OH SDK.
Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* ohos: Detect installed fonts
Scan the systems font folder to detect installed fonts,
derive their associated font names and generate the font list
based on that.
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* Use hardcoded filepaths for HMOS Color emojis
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
* Also support parsing OH 4.x Noto fonts
Currently we don't have an easy way to test the OH version
from the fonts module, so the parsing code has to be extended.
Once the OH 5.0 beta has a reliable fontconfig.json filemap,
then we can probably get rid of most of the parsing code,
and hardcode the OH 4.x Note fonts as a fallback.
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
---------
Signed-off-by: Jonathan Schwender <schwenderjonathan@gmail.com>
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
This adds support for generic font families in Servo and allows for
configuration of them as well as their default font sizes. One
interesting fix here is that now monospace default to 13px, like it does
in other browsers.
In addition to that, this exposes a new interface in Stylo which allows
setting a default style. This is quite useful for fonts, but also for
other kinds of default style settings -- like text zoom.
Fixes#8371.
Fixes#14773.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
The input for this function commonly comes from a `LowercaseString`,
while our actual font family name has cases.
Since font family lookup should be case-neutral, we do a compare
ignoring the ascii case.
I'm not too familiar with the CSS standard so I'm not 100% sure
if this is sufficient, or if we need to use a different method
to compare strings for arbitrary non-ascii font names.
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
The fallback behavior seems to have changed recently.
Now we need to explicitly add a fallback for `serif`
otherwise no font is selected.
Signed-off-by: Jonathan Schwender <jonathan.schwender@huawei.com>
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>
