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egui/crates/egui_demo_app
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Emil Ernerfeldt 1571027556
Replace `eframe::Frame` commands and `WindowInfo` with egui (#3564) 
* Part of https://github.com/emilk/egui/issues/3556

## In short
You now almost never need to use `eframe::Frame` - instead use
`ui.input(|i| i.viewport())` for information about the current viewport
(native window), and use `ctx.send_viewport_cmd` to modify it.

## In detail

This PR removes most commands from `eframe::Frame`, and replaces them
with `ViewportCommand`.
So `frame.close()` becomes
`ctx.send_viewport_cmd(ViewportCommand::Close)`, etc.

`frame.info().window_info` is now also gone, replaced with `ui.input(|i|
i.viewport())`.

`frame.info().native_pixels_per_point` is replaced with `ui.input(|i|
i.raw.native_pixels_per_point)`.

`RawInput` now contains one `ViewportInfo` for each viewport.

Screenshots are taken with
`ctx.send_viewport_cmd(ViewportCommand::Screenshots)` and are returned
in `egui::Event` which you can check with:

``` ust
ui.input(|i| {
    for event in &i.raw.events {
        if let egui::Event::Screenshot { viewport_id, image } = event {
            // handle it here
        }
    }
});
```

### Motivation
You no longer need to pass around the `&eframe::Frame` everywhere.
This also opens the door for other integrations to use the same API of
`ViewportCommand`s.
 		2023-11-18 19:27:53 +01:00
..
src Replace `eframe::Frame` commands and `WindowInfo` with egui (#3564) 2023-11-18 19:27:53 +01:00
Cargo.toml Fix HTTP web demo (#3407) 2023-09-28 12:06:55 +02:00
README.md Rename `sh/` folder to `scripts/` 2023-04-18 17:10:52 +02:00

README.md

egui demo app

This app demonstrates egui and eframe.

View the demo app online at https://egui.rs.

Run it locally with cargo run --release -p egui_demo_app.

egui_demo_app can be compiled to WASM and viewed in a browser locally with:

./scripts/start_server.sh &
./scripts/build_demo_web.sh --open

egui_demo_app uses egui_demo_lib.

Running with wgpu backend

(cd egui_demo_app && cargo r --features wgpu)