* Bump bitflags to 2.0.0
* Sprinkle Clone, Copy, Eq, PartialEq, and Debug derives where needed
* Call `bits` on bitflags, as it is now a method
* Switch from `from_bits_truncate` to `from_bits_retain` on bitflags where needed
* Bump h263-rs for the bitflags 2.0.0 dependency
As part of porting to bitflags 2.0.0, see:
https://kodraus.github.io/rust/2022/10/07/bitflags2.html#upgrading-to-2x
`tag_length` isn't really necessary since each tag is read using
a dedicated `swf::Reader`, which keeps track of the tag boundary
internally.
As a result, `tag_len` can be avoided passed around many times in
`movie_clip.rs`.
And make it generic, as a first step towards making it a general-purpose
data structure for the whole codebase. Some potential replacements are:
* `BoundingBox` in `render/src/bounding_box.rs`.
* `BoxBounds` in `core/src/html/dimensions.rs`.
* Parameters to a bunch of `BitmapData` methods in
`core/src/bitmap/bitmap_data.rs`.
The SWF19 specs incorrectly state DefineEditText tag only contains
font height if the HasFont flag is set. The tag also contains
the height if the HasFontClass flag is set. This indicates that a
font is used via runtime sharing.
Extract `swf::Reader::read_do_abc()` which, as the name suggests,
reads a `DoAbc` tag, and use it before calling to `Avm2::load_abc`.
Finally, introduce `DoAbcFlag` using `bitflags`.
This greatly simplifies the ABC loading code.
Fixes#7098
Some SWF appear to have a PlaceObject3 tag with
`HAS_CACHE_AS_BITMAP` set, but the tag ends without
including the corresponding 'is_bitmap_cached' byte.
* Remove LineStyle::color, instead using fill_style with
FillStyle::Color to indicate solid color.
* Store `flags` in the struct instead of separate bools/values.
* Add getters/setters for ease of use.
* Add builder-style methods for setting LineStyle properties.
* Fix misnamed ALLOW_CLOSE flag to NO_CLOSE.
relrelb