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### 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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