Narfinger d41bb930e1 painter: Insert a cache for animation with smarter updates (#41956) ...

This inserts a cache in painter that keeps data for animating images in
Painter.
We then can send cheap ImageUpdate::UpdateAnimation to just get the
required bytes from the cache.

There are some warts with the current design:
- ImageUpdate::AddImage only adds images in the cache that have the data
in SerializableImageData::Raw. Potentially there could be image
animations in other ways which then for a following
ImageUpdate::UpdateAnimation we do not have the data. We can probably
fix this on the sender side.

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>

Testing: Tested on the usecase in
https://github.com/servo/servo/issues/41818 and WPT test here:
https://github.com/Narfinger/servo/actions/runs/21063721427
Fixes: https://github.com/servo/servo/issues/41818

---------

Signed-off-by: Narfinger <Narfinger@users.noreply.github.com>

2026-01-28 14:07:27 +00:00

..

bytelengthqueuingstrategy.rs

…

byteteereadintorequest.rs

…

byteteereadrequest.rs

…

byteteeunderlyingsource.rs

…

compressionstream.rs

…

countqueuingstrategy.rs

…

decompressionstream.rs

…

defaultteereadrequest.rs

…

defaultteeunderlyingsource.rs

…

mod.rs

…

readablebytestreamcontroller.rs

…

readablestream.rs

…

readablestreambyobreader.rs

…

readablestreambyobrequest.rs

…

readablestreamdefaultcontroller.rs

…

readablestreamdefaultreader.rs

…

readablestreamgenericreader.rs

…

transformstream.rs

…

transformstreamdefaultcontroller.rs

…

underlyingsourcecontainer.rs

…

writablestream.rs

…

writablestreamdefaultcontroller.rs

…

writablestreamdefaultwriter.rs

…