Like the name suggests this pointer type compares its pointees by value
rather than just by the pointer. This is needed for the defaulted
struct Properties equality operator.
This commit also contains a few changes to StyleValue such as replacing
the operator==()s with a .equals() again. This is done to avoid the new
reversed operator==()s ambiguity in C++20.
This removes a load of manually implemented equality operators. This
is done with a little pattern where all properties of a StyleValue are
placed inside a Properties member struct, with a defaulted equality
operator. This is then used to do the actual StyleValue compare.
There is also a CTRP class to avoid manually implementing the virtual
operator==()s for all StyleValues.
Here .to_string() was being called, which gives an ErrorOr<String>,
then .value() was called on that without any checks. Cases like this
should at least be .release_value_but_fixme_should_propagate_errors()
which makes it clear the error is ignored, but here it's easy to
propagate.
This was wrong twice making it right... But let's fix that.
The center was being passed as a DevicePixelPoint, but was in fact in
CSS pixels, the size was passed as a Gfx::FloatSize but was in
CSS pixels again. Then we were scaling from device pixels to CSS pixels
when painting which does not need to be done if everything is passed
which the correct scale factors already applied.
This will make it easier to support both string types at the same time
while we convert code, and tracking down remaining uses.
One big exception is Value::to_string() in LibJS, where the name is
dictated by the ToString AO.
We have a new, improved string type coming up in AK (OOM aware, no null
state), and while it's going to use UTF-8, the name UTF8String is a
mouthful - so let's free up the String name by renaming the existing
class.
Making the old one have an annoying name will hopefully also help with
quick adoption :^)
This class represents a <position> and handles resolving it to a
Gfx::FloatPoint relative to some rectangle.
It can handle all forms of <position>:
- Two presets:
left center
- A preset + a length percentage:
10% bottom
- Or relative to some edges:
right 20% bottom 30px
This commit adds a simple style value (which is an abstract image)
to represent conic-gradient()s.
This commit also starts to factor out some reusable parts of the
linear-gradient() style value for other gradient types.
