egui/crates/eframe
Sheldon M 53f8e4049f
Position persistence and sane clamping to still-available monitors for Windows (#2583)
* Attempt to fix monitor clamping on Windows so window positions can be restored between sessions.

* Missed a change.

* Renamed variables, reorganized some lines of code, and added some more comments.

* Cargo fmt run

* Updated CHANGELOG.md to briefly describe my change

* Updated CHANGELOG.md to briefly describe my change

* Applied suggested fixes from emilk
Discovered an issue where putting the monitor off a non-primary monitor to the left causes the position to be off the monitor x and y range, clamping to the primary instead of the non-primary.

* Fix for matching negative restored window positions. Should clamp if any part of the window had been visible on a remaining monitor.

* Apparently compiler attributes on statements have been marked unstable.
Rather than just wrap in blocks, I kind of prefer the more explicit if cfg! call for line 114.

CHANGELOG.md - correct a missing paren I noticed

* I was being silly, I don't need to clone inner_size_points on line 112

* Cargo fmt run

* Update crates/egui-winit/CHANGELOG.md

emilk suggested changelog formatting

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

* Update window_settings.rs

Satisfy CI Error

* clippy

---------

Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
2023-02-04 15:33:32 +01:00
..
src Position persistence and sane clamping to still-available monitors for Windows (#2583) 2023-02-04 15:33:32 +01:00
Cargo.toml cargo update (#2671) 2023-02-04 13:41:34 +01:00
CHANGELOG.md Update to to winit 0.28 (#2654) 2023-02-04 12:43:43 +01:00
README.md Remove references to old, fixed Firefox WebGL bug 2022-12-12 21:45:57 +01:00

eframe: the egui framework

Latest version Documentation unsafe forbidden MIT Apache

eframe is the official framework library for writing apps using egui. The app can be compiled both to run natively (cross platform) or be compiled to a web app (using WASM).

To get started, see the examples. To learn how to set up eframe for web and native, go to https://github.com/emilk/eframe_template/ and follow the instructions there!

There is also a tutorial video at https://www.youtube.com/watch?v=NtUkr_z7l84.

For how to use egui, see the egui docs.


eframe uses egui_glow for rendering, and on native it uses egui-winit.

To use on Linux, first run:

sudo apt-get install libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libspeechd-dev libxkbcommon-dev libssl-dev

You need to either use edition = "2021", or set resolver = "2" in the [workspace] section of your to-level Cargo.toml. See this link for more info.

You can opt-in to the using egui_wgpu for rendering by enabling the wgpu feature and setting NativeOptions::renderer to Renderer::Wgpu.

Alternatives

eframe is not the only way to write an app using egui! You can also try egui-miniquad, bevy_egui, egui_sdl2_gl, and others.

You can also use egui_glow and winit to build your own app as demonstrated in https://github.com/emilk/egui/blob/master/crates/egui_glow/examples/pure_glow.rs.

Problems with running egui on the web

eframe uses WebGL (via glow) and WASM, and almost nothing else from the web tech stack. This has some benefits, but also produces some challenges and serious downsides.

  • Rendering: Getting pixel-perfect rendering right on the web is very difficult.
  • Search: you cannot search an egui web page like you would a normal web page.
  • Bringing up an on-screen keyboard on mobile: there is no JS function to do this, so eframe fakes it by adding some invisible DOM elements. It doesn't always work.
  • Mobile text editing is not as good as for a normal web app.
  • Accessibility: There is an experimental screen reader for eframe, but it has to be enabled explicitly. There is no JS function to ask "Does the user want a screen reader?" (and there should probably not be such a function, due to user tracking/integrity concerns).
  • No integration with browser settings for colors and fonts.

In many ways, eframe is trying to make the browser do something it wasn't designed to do (though there are many things browser vendors could do to improve how well libraries like egui work).

The suggested use for eframe are for web apps where performance and responsiveness are more important than accessibility and mobile text editing.

Companion crates

Not all rust crates work when compiled to WASM, but here are some useful crates have been designed to work well both natively and as WASM:

Name

The frame in eframe stands both for the frame in which your egui app resides and also for "framework" (frame is a framework, egui is a library).