CSS Text 3 gives `text-indent` a couple of optional keywords to control
which lines are affected. This commit parses them, but doesn't yet do
anything with them.
If either of the two transform functions during interpolation is a 3D
function, both of them get coerced to a 3D function before deciding what
to do next. However, we only supported converting 2D functions to 3D if
they had a 2D primitive they could be converted to first.
Change our behavior to default to converting to matrix3d() if there is
no explicit conversion path. Fixes a crash in
`css/css-transforms/animation/transform-interpolation-004.html`.
We had a partial implementation of transformation function interpolation
that did not support numerical interpolation of simple functions (e.g.
`scale(0)` -> `scale(1)`). This refactors the interpolation to follow
the spec more closely.
Gains us 267 WPT subtest passes in `css/css-transforms`.
Fixes#6774.
Since we now have access to the `AbstractElement` through the
`ComputationContext` we can just set the flag that this element relies
on tree counting functions directly, no need to pass this struct around.
We have this code duplicated in multiple places, and we'll want to
handle registered custom properties too at some point, so wrap it in a
reusable `CalculationContext::for_property()` method.
Noticed while doing this that ValueParsingContext will eventually need
to take a PropertyNameAndID, not a PropertyID, so I've added a FIXME.
We shouldn't include spread distance when serializing `text-shadow` as
it is not supported unlike `box-shadow` - to achieve this we store
whether this is a text or box shadow within the ShadowStyleValue and
serialize appropriately.
If we are interpolating between a dimension and a percentage value and
the dimension component is 0, we now return a percentage value rather
than a `calc()` value.
We also support interpolating from a CalculatedStyleValue to a
compatible dimension or percentage style value.
This also brings with it a couple of improvements in how we handle
interpolation between mixed dimension and percentage types in terms of:
- Proper simplification of the resulting calc()
- Improved handling of interpolation outside the 0-1 range
...instead of `auto` Lengths.
This also fixes interpolating between two `auto` `<bg-size>`s, which
fixes a lot of animation tests for both `background-size` and `mask`.
The CSSNumericType defined in the spec is a simple dictionary which is
only used for OM purposes. This NumericType class is used internally
and matches the more abstract definition of a "type".
The current Color::interpolate_color method does not follow the specs
properly. Started improving it by handling premultiplied alpha in color
interpolation.
Only one WPT test covers this (color-transition-premultiplied), which we
currently pass due to a different approach in Color.mixed_with.
This inheritance exists for typed-om classes, but StyleValues aren't
typed-om.
Somehow this makes our z-index interpolation slightly more correct. 🎉
This reverts 0e3487b9ab.
Back when I made that change, I thought we could make our StyleValue
classes match the typed-om definitions directly. However, they have
different requirements. Typed-om types need to be mutable and GCed,
whereas StyleValues are immutable and ideally wouldn't require a JS VM.
While I was already making such a cataclysmic change, I've moved it into
the StyleValues directory, because it *not* being there has bothered me
for a long time. 😅
- Omit calcs that are resolved to `0px` from the serialized value
- Allow CSV to be the 'Z' component in interpolated value.
- Allow calcs with mixed percentages in the first two arguments.
To achieve the third item above the concept of a "special" value parsing
context has been added - this will also be useful for instance for
different arguments of color functions having different contexts.
Gains us 23 WPT tests
Using a generic context argument will allow us to resolve colors in
places where we have all the required information but not in the form of
a layout node as was expected previously.
