This commit implements a new API for drag and drop, with a `DataTransfer` type which abstracts over the various clipboard/drag and drop APIs across different platforms. I built this on top of #2429 although admittedly I ended up removing pretty much all of their work while I was reworking the design.
This is being built in order to help support [drag-and-drop work](https://github.com/slint-ui/slint/issues/1967) in Slint's winit backend. As part of that work, I did extensive research on how drag-and-drop and clipboard APIs are implemented across different platforms, and wrote a (still WIP) research document that can be found [here](https://gist.github.com/eira-fransham/06750cf8d25ade08d362a0ca8dfafe06).
The new API is inspired by the browser's [`DataTransfer`](https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer) API.
wl_surface::set_buffer_scale is available since version 3. Sending it
on an older surface is a protocol error that terminates the connection.
This could happen when setting a custom cursor on a compositor without
wp_viewporter. The neighboring damage call already checks the version.
At the moment, the wayland code uses ahash to perform hashing
in its various hash mas. This was done because ahash was seen as
the best default in the Rust community at the time. However, most
Rust crates (including `hashbrown`) have since moved to using
foldhash instead.
This move is done for two primary reasons:
- This reduces the number of dependencies in the tree for most GUI
projects. As other projects use foldhash now, this removes ahash
(as well as its five dependencies) from the tree.
- In most cases, foldhash is faster than ahash.
Signed-off-by: John Nunley <dev@notgull.net>
Allow updating IME state atomically to make it easier for platforms
where it's atomic by its nature, like Wayland. The old API is marked
as deprecated and is routed to the new atomic API.
Co-authored-by: dcz <gilapfco.dcz@porcupinefactory.org>
