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1571027556
* 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.
61 lines
1.4 KiB
Rust
61 lines
1.4 KiB
Rust
//! Demo-code for showing how egui is used.
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//!
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//! The demo-code is also used in benchmarks and tests.
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// ----------------------------------------------------------------------------
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pub mod about;
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pub mod code_editor;
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pub mod code_example;
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pub mod context_menu;
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pub mod dancing_strings;
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pub mod demo_app_windows;
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pub mod drag_and_drop;
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pub mod extra_viewport;
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pub mod font_book;
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pub mod highlighting;
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pub mod layout_test;
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pub mod misc_demo_window;
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pub mod multi_touch;
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pub mod paint_bezier;
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pub mod painting;
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pub mod password;
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pub mod plot_demo;
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pub mod scrolling;
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pub mod sliders;
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pub mod strip_demo;
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pub mod table_demo;
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pub mod tests;
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pub mod text_edit;
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pub mod text_layout;
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pub mod toggle_switch;
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pub mod widget_gallery;
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pub mod window_options;
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pub mod window_with_panels;
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pub use {
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about::About, demo_app_windows::DemoWindows, misc_demo_window::MiscDemoWindow,
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widget_gallery::WidgetGallery,
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};
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// ----------------------------------------------------------------------------
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/// Something to view in the demo windows
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pub trait View {
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fn ui(&mut self, ui: &mut egui::Ui);
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}
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/// Something to view
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pub trait Demo {
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/// Is the demo enabled for this integraton?
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fn is_enabled(&self, _ctx: &egui::Context) -> bool {
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true
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}
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/// `&'static` so we can also use it as a key to store open/close state.
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fn name(&self) -> &'static str;
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/// Show windows, etc
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fn show(&mut self, ctx: &egui::Context, open: &mut bool);
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}
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