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Context::request_repaint will wake up the UI thread (#1366)

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This adds a callback (set by `Context::set_request_repaint_callback`)
which integration can use to wake up the UI thread.

eframe (egui_web and egui_glow) will use this, replacing
`epi::Frame::request_repaint`.

Existing code calling `epi::Frame::request_repaint` should be changed
to instead call `egui::Context::request_repaint`.

This is the first callback added to the egui API, which otherwise is
completely driven by data.

The purpose of this is to remove the confusion between the two
`request_repaint` methods (by removing one). Furthermore, it makes
`epi::Frame` a lot simpler, allowing future simplifications to it
(perhaps no longer having it be `Send+Sync+Clone`).
This commit is contained in:
Emil Ernerfeldt
2022-03-15 17:21:52 +01:00
committed by GitHub
parent 6aee4997d4
commit c768d1d48e
12 changed files with 46 additions and 48 deletions
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CHANGELOG.md
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@@ -9,6 +9,7 @@ NOTE: [`epaint`](epaint/CHANGELOG.md), [`eframe`](eframe/CHANGELOG.md), [`egui_w
### Added ⭐
* Add `Shape::Callback` for backend-specific painting ([#1351](https://github.com/emilk/egui/pull/1351)).
* Added `Frame::canvas` ([#1362](https://github.com/emilk/egui/pull/1362)).
* `Context::request_repaint` will wake up UI thread, if integrations has called `Context::set_request_repaint_callback` ([#1366](https://github.com/emilk/egui/pull/1366)).
### Changed 🔧
* `ClippedMesh` has been replaced with `ClippedPrimitive` ([#1351](https://github.com/emilk/egui/pull/1351)).