Re-number the `ClipEventFlag` enum members to match how they
actually appear in a SWF. This allows much simpler read/write
operations.
Also, gracefully handle malformed ClipActions that are only 1 or 0
bytes, as it seems that Flash accepts those too.
Let the `Reader` outlive outside the loop, so it tracks its own
position, instead of doing so manually.
Also move `read_from_file` outside and reuse it.
Matrices in an SWF file store their scale/skew components in
in 16.16 format (fbits).
Split `ruffle_core::Matrix` and `swf::Matrix`. `swf::Matrix` now
stores its data as `Fixed16` instead of immediately converting to
`f32`.
When reading an SWF, search for FileAttributes and
SetBackgroundColor and return this along with the header data
because it's useful (in particular, the AS3 flag).
Use the proper types for ColorTransform:
* Fixed8 (8.8) format for multiplicative component
* i16 format for additive component
This matches the behavior of Flash (for example, alpha only changes
in units of 1/256).
* #[derive(Collect)] should be before #[collect]
* Replace redunant `&buf[..]` with `buf`
* Changes most cases of UPPERCase to UpperCase
* Allow upper_case_acronym on most SWF types, as they are from
SWF spec/more annoying to change.
Some SWFs in the wild have PlaceObject tags with ending ClipActions
that are 2 bytes instead of the required 4 bytes (see #2899).
Swallow the error in this case so that the tag can run.
Normally, a hit test on static text will consider the text glyphs.
However, a CSMTextSettings tag can change the text to use the
"advanced rendering engine", which causes hit tests to only consider
the bounds. This is toggled by the "Anti-alias for readibility"
setting in the Flash IDE.
Wire up the CSMTextSettings tag and adjust hit test behavior based
on this flag.
Fixes#2987.
TÖRÖK Attila