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Implement accessibility APIs via AccessKit (#2294)

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* squash before rebase

* Update AccessKit, introducing support for editable spinners on Windows and an important fix for navigation order on macOS

* Restore support for increment and decrement actions in DragValue

* Avoid VoiceOver race condition bug

* fix clippy lint

* Tell AccessKit that the default action for a text edit (equivalent to a click) is to set the focus. This matters to some platform adapters.

* Refactor InputState functions for AccessKit actions

* Support the AccessKit SetValue for DragValue; this is the only way for a Windows AT to programmatically adjust the value

* Same for Slider

* Properly associate the slider label with both the slider and the drag value

* Lazily activate egui's AccessKit support

* fix clippy lint

* Update AccessKit

* More documentation, particularly around lazy activation

* Tweak one of the doc comments

* See if I can get AccessKit exempted from the 'missing backticks' lint

* Make PlatformOutput::accesskit_update an Option

* Refactor lazy activation

* Refactor node mutation (again)

* Eliminate the need for an explicit is_accesskit_active method, at least for now

* Fix doc comment

* More refactoring of tree construction; don't depend on Arc::get_mut

* Override a clippy lint; I seem to have no other choice

* Final planned refactor: a more flexible approach to hierarchy

* Last AccessKit update for this PR; includes an important macOS DPI fix

* Move and document the optional accesskit dependency

* Fix comment typo

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

* reformat

* More elegant code for conditionally creating a node

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>

* Set step to 1.0 for all integer sliders

* Add doc example for Response::labelled_by

* Clarify a TODO comment I left for myself

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
This commit is contained in:
Matt Campbell
2022-12-04 12:17:12 -06:00
committed by GitHub
parent 48666e1d7a
commit e1f348e4b2
28 changed files with 1049 additions and 97 deletions
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6
crates/egui-winit/Cargo.toml
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@@ -20,6 +20,9 @@ all-features = true
[features]
default = ["clipboard", "links", "wayland", "winit/default"]
## Enable platform accessibility API implementations through [AccessKit](https://accesskit.dev/).
accesskit = ["accesskit_winit", "egui/accesskit"]
## [`bytemuck`](https://docs.rs/bytemuck) enables you to cast [`egui::epaint::Vertex`], [`egui::Vec2`] etc to `&[u8]`.
bytemuck = ["egui/bytemuck"]
@@ -57,6 +60,9 @@ winit = { version = "0.27.2", default-features = false }
## Enable this when generating docs.
document-features = { version = "0.2", optional = true }
# feature accesskit
accesskit_winit = { version = "0.7.1", optional = true }
puffin = { version = "0.14", optional = true }
serde = { version = "1.0", optional = true, features = ["derive"] }