Merge example_web into egui_demo_lib

egui_demo_lib/src/apps/demo/mod.rs

@@ -0,0 +1,43 @@
+//! Demo-code for showing how Egui is used.
+//!
+//! The demo-code is also used in benchmarks and tests.
+
+// ----------------------------------------------------------------------------
+
+mod app;
+mod color_test;
+mod dancing_strings;
+pub mod demo_window;
+mod demo_windows;
+mod drag_and_drop;
+mod font_book;
+pub mod font_contents_emoji;
+pub mod font_contents_ubuntu;
+mod fractal_clock;
+mod painting;
+mod scrolls;
+mod sliders;
+mod tests;
+pub mod toggle_switch;
+mod widgets;
+
+pub use {
+    app::*, color_test::ColorTest, dancing_strings::DancingStrings, demo_window::DemoWindow,
+    demo_windows::*, drag_and_drop::*, font_book::FontBook, fractal_clock::FractalClock,
+    painting::Painting, scrolls::Scrolls, sliders::Sliders, tests::Tests, widgets::Widgets,
+};
+
+// ----------------------------------------------------------------------------
+
+/// Something to view in the demo windows
+pub trait View {
+    fn ui(&mut self, ui: &mut egui::Ui);
+}
+
+/// Something to view
+pub trait Demo {
+    fn name(&self) -> &str;
+
+    /// Show windows, etc
+    fn show(&mut self, ctx: &egui::CtxRef, open: &mut bool);
+}