Move all crates into a crates directory (#1940)

2026-09-02 14:50:03 -04:00 · 2022-08-20 10:41:49 +02:00
parent 5c63648c02
commit 041f2e64ba
260 changed files with 59 additions and 57 deletions
--- a/crates/egui_demo_lib/src/demo/about.rs
+++ b/crates/egui_demo_lib/src/demo/about.rs
@@ -0,0 +1,94 @@
+#[derive(Default)]
+#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
+#[cfg_attr(feature = "serde", serde(default))]
+pub struct About {}
+
+impl super::Demo for About {
+    fn name(&self) -> &'static str {
+        "About egui"
+    }
+
+    fn show(&mut self, ctx: &egui::Context, open: &mut bool) {
+        egui::Window::new(self.name())
+            .default_width(320.0)
+            .open(open)
+            .show(ctx, |ui| {
+                use super::View as _;
+                self.ui(ui);
+            });
+    }
+}
+
+impl super::View for About {
+    fn ui(&mut self, ui: &mut egui::Ui) {
+        use egui::special_emojis::{OS_APPLE, OS_LINUX, OS_WINDOWS};
+
+        ui.heading("egui");
+        ui.label(format!(
+            "egui is an immediate mode GUI library written in Rust. egui runs both on the web and natively on {}{}{}. \
+            On the web it is compiled to WebAssembly and rendered with WebGL.{}",
+            OS_APPLE, OS_LINUX, OS_WINDOWS,
+            if cfg!(target_arch = "wasm32") {
+                " Everything you see is rendered as textured triangles. There is no DOM, HTML, JS or CSS. Just Rust."
+            } else {""}
+        ));
+        ui.label("egui is designed to be easy to use, portable, and fast.");
+
+        ui.add_space(12.0); // ui.separator();
+        ui.heading("Immediate mode");
+        about_immediate_mode(ui);
+
+        ui.add_space(12.0); // ui.separator();
+        ui.heading("Links");
+        links(ui);
+    }
+}
+
+fn about_immediate_mode(ui: &mut egui::Ui) {
+    use crate::syntax_highlighting::code_view_ui;
+    ui.style_mut().spacing.interact_size.y = 0.0; // hack to make `horizontal_wrapped` work better with text.
+
+    ui.horizontal_wrapped(|ui| {
+            ui.spacing_mut().item_spacing.x = 0.0;
+            ui.label("Immediate mode is a GUI paradigm that lets you create a GUI with less code and simpler control flow. For example, this is how you create a ");
+            let _ = ui.small_button("button");
+            ui.label(" in egui:");
+        });
+
+    ui.add_space(8.0);
+    code_view_ui(
+        ui,
+        r#"
+  if ui.button("Save").clicked() {
+      my_state.save();
+  }"#
+        .trim_start_matches('\n'),
+    );
+    ui.add_space(8.0);
+
+    ui.label("Note how there are no callbacks or messages, and no button state to store.");
+
+    ui.label("Immediate mode has its roots in gaming, where everything on the screen is painted at the display refresh rate, i.e. at 60+ frames per second. \
+        In immediate mode GUIs, the entire interface is layed out and painted at the same high rate. \
+        This makes immediate mode GUIs especially well suited for highly interactive applications.");
+
+    ui.horizontal_wrapped(|ui| {
+        ui.spacing_mut().item_spacing.x = 0.0;
+        ui.label("More about immediate mode ");
+        ui.hyperlink_to("here", "https://github.com/emilk/egui#why-immediate-mode");
+        ui.label(".");
+    });
+}
+
+fn links(ui: &mut egui::Ui) {
+    use egui::special_emojis::{GITHUB, TWITTER};
+    ui.hyperlink_to(
+        format!("{} egui on GitHub", GITHUB),
+        "https://github.com/emilk/egui",
+    );
+    ui.hyperlink_to(
+        format!("{} @ernerfeldt", TWITTER),
+        "https://twitter.com/ernerfeldt",
+    );
+    ui.hyperlink_to("egui documentation", "https://docs.rs/egui/");
+}