a2f1ca31a0
### Motivation We want to offer our users a context menu with `Cut`, `Copy` and `Paste` actions. `Paste` is not possible out of the box. ### Changes This PR adds `ViewportCommand::RequestCut`, `ViewportCommand::RequestCopy` and `ViewportCommand::RequestPaste`. They are routed and handled after the example of `ViewportCommand::Screenshot` and result in the same code being executed as when the user uses `CTRL+V` style keyboard commands. ### Reasoning In our last release we used an instance of `egui_winit:📋:Clipboard` in order to get the `Paste` functionality. However Linux users on Wayland complained about broken clipboard interaction (https://github.com/mikedilger/gossip/issues/617). After a while of digging I could not find the issue although I have found references to problems with multiple clipboards per handle before (https://gitlab.gnome.org/GNOME/mutter/-/issues/1250) but I compared mutter with weston and the problem occured on both. So to solve this I set out to extend egui to access the clipboard instance already present in egui_winit. Since there was no trivial way to reach the instance of `egui_winit::State` I felt the best approach was to follow the logic of the new `ViewportCommand::Screenshot`. ### Variations It could make sense to make the introduced `enum ActionRequested` a part of crates/egui/src/viewport.rs and to then wrap them into one single `ViewportCommand::ActionRequest(ActionRequested)`. ### Example ```Rust let mut text = String::new(); let response = ui.text_edit_singleline(&mut text); if ui.button("Paste").clicked() { response.request_focus(); ui.ctx().send_viewport_cmd(ViewportCommand::RequestPaste); } ``` --------- Co-authored-by: Emil Ernerfeldt <emil.ernerfeldt@gmail.com> |
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README.md
GUI implementation
This is the core library crate egui. It is fully platform independent without any backend. You give the egui library input each frame (mouse pos etc), and it outputs a triangle mesh for you to paint.