Instead of doing font selection and text shaping in `canvas`, move this
to `script`. This allows canvas to use the shared `Document`
`FontContext`, which has access to web fonts. In addition, ensure that
there is a font style accessible for `OffscreenCanvas` in workers.
Testing: This causes a number of WPT tests to start to pass as web fonts
are
supported on canvas again. In addition, some start to fail as they
expose other
issues:
- The lack of support for the `Context2D.fontStretch` property
- Issues with zerosize gradient interpolation.
- Differences between quoted and unquoted font family names. This seems
like
a timing issue with the way we are handling web fonts. The test seems to
be
expecting Local fonts to be available immediately (without waiting for
them
to load). This isn't how Servo works ATM. Seems like an issue with the
test.
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Follow the HTML speficication and add missing 'transferToImageBitmap'
method to OffscreenCanvas interface.
https://html.spec.whatwg.org/multipage/#dom-offscreencanvas-transfertoimagebitmap
Testing: Improvements in the following tests
- html/canvas/offscreen/compositing/2d.composite.grid*
- html/canvas/offscreen/fill-and-stroke-styles/2d.gradient*
- html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas*
- html/canvas/offscreen/reset/2d.reset*
- html/canvas/offscreen/text/2d.text*
Fixes (partially): #34111
Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
This patch implements the `FontFace` interface, but with some caveats
1. The interface is only exposed on `Window`. Support for Workers will
be handled in the future.
2. The concept of `css-connected` `FontFace` is not implemented, so
`@font-face` rules in stylesheets will not be represented in the DOM.
3. The constructor only supports using `url()` strings as source
and `ArrayBuffer` and `ArrayBufferView` are not supported yet.
A skeleton implementation of the `load` method of `FontFaceSet` is also
implemented in this patch. The intention is to support some web pages
that don't load without this method.
Signed-off-by: Mukilan Thiyagarajan <mukilan@igalia.com>
Most tests were only being run for layout-2013, not for layout-2020.
This wasn't great since layout-2020 is now the default.
So this patch unifies the lists of included tests for both layouts.
For layout-2013 this implies adding css/css-content/, css/css-logical/
and css/css-masking/clip/.
For layout-2020 this implies adding several additional css tests, and
also tests like dom/, js/, html/, etc.
