Subwindow shortcut

utility/src/gui/mod.rs

@@ -1,7 +1,9 @@
+mod boot;
 pub mod lengths_table;
 pub mod render;
 mod slider;
-mod boot;
+mod subwindow;
 
-pub use slider::{slider, labeled_slider};
 pub use boot::boot_eframe;
+pub use slider::{labeled_slider, slider};
+pub use subwindow::subwindow;

utility/src/gui/subwindow.rs

@@ -0,0 +1,39 @@
+use eframe::egui;
+use eframe::egui::{Frame, Ui, ViewportBuilder};
+
+pub fn subwindow(
+    ui: &mut Ui,
+    id: &str,
+    title: &str,
+    extra_settings: impl FnOnce(ViewportBuilder) -> ViewportBuilder,
+    mut content: impl FnMut(&mut Ui),
+) -> Response {
+    let id = egui::ViewportId::from_hash_of(id);
+    let vb = extra_settings(ViewportBuilder::default().with_title(title));
+
+    let closed = ui.ctx().show_viewport_immediate(id, vb, |ui, _| {
+        egui::CentralPanel::default()
+            .frame(Frame::default().inner_margin(0.0))
+            .show(ui, |ui| content(ui));
+
+        return ui.input(|i| i.viewport().close_requested());
+    });
+
+    return Response { closed };
+}
+
+pub struct Response {
+    closed: bool,
+}
+
+impl Response {
+    pub fn close_requested(&self) -> bool {
+        return self.closed;
+    }
+
+    pub fn on_close(&self, cb: impl FnOnce()) {
+        if self.closed {
+            cb()
+        }
+    }
+}