Parse things like "in hsl hue longer". For details, see the
CSS Images Module Level 4, https://www.w3.org/TR/css-images-4.
Tests included.
Gradient interpolation color spaces aren't supported for
rendering yet.
The code parsing interpolation methods hadn't learned about
or latest color space additions. While we're at it, improve
the error reporting a bit.
Tests included.
1MB textures can lead to 20s runtimes - which with asan CI being a lot
slower can be a loooong time and cause timeouts.
Limiting them to 16kB still allows hitting max texture size sometimes
but makes sure the test only runs for 3-4s worst case.
I hope that doesn't trigger timeouts even under asan.
Currently we only have sRGB, so it's a bit redundant, but we'll need this
for color-mix()
Once we have more color spaces, they should be added here (presumably the
enum would be in GDK instead, and instead of GdkRGBA these colors would
have a GdkColor.
Make calc() work in colors too, since we need to support degrees for hsl()
hue anyway and it goes through the same machinery. Make that work for
legacy syntax too, matching the spec.
Ignore missing components/none for now.
Ignore gdk_rgba_parser_parse(), that's also used outside css.
Warn for uses of @name colors, since these should be replaced with
CSS variables and custom properties. We don't issue deprecation
warnings for @define-color uses, since we may want to keep these
around in theme CSS for a while, for backwards compatibility.
Update all affected tests.
Implement the functions described in the "Mathematical
Expressions" section of the "CSS Values and Units Module
Level 4" spec, https://www.w3.org/TR/css-values-4/.
Beyond calc(), which we already had, this includes
min(), max(), clamp(),
round(), rem(), mod(),
sin(), cos(), tan(), asin(), acos(), atan(), atan2(),
pow(), sqrt(), hypot(), log(), exp(),
abs(), sign(),
e, pi, infinity and NaN.
Some tests included.
Copy what gcc's libstdc++ does for vectors to avoid overflows:
1. Define a max size macro and assert against it
Note that we don't assert but actually check, because this needs
to abort even if assertions are disabled.
2. Don't do fancy math to compute new capacity.
Just size *= 2 instead and be careful about overflow.
We'll need this to support variables in @keyframes, since styles will
need to combine their own variables and the ones from the keyframes.
See the next commit, this one is split out to avoid a huge diff.
We want to store some metadata in our symbolic pngs, so make it
possible to get options when loading a png, along with the texture.
Update all callers.
Due to rounding errors, it is possible after intersecting a lot of
rectangles to end up with a tiny size for an offscreen. And because we
allow an epsilon before ceil()ing to an integer (see commit afc7b46264
for details) it is now possible that we end up with a size of 0.
Avoid that by always enforcing a minimum size of 1px.
Test included
The test uses a different codepath to arrive at the same problem - it
specifies the small size instead of triggering it via rounding errors
and clipping like the original bug (and most likely the more common case
to encounter this problem.
Fixes#6656
