Add a window options demo

egui_demo_lib/src/apps/demo/window_options.rs

@@ -0,0 +1,73 @@
+use crate::__egui_github_link_file;
+
+#[derive(Clone, PartialEq, serde::Deserialize, serde::Serialize)]
+pub struct WindowOptions {
+    title: String,
+    title_bar: bool,
+    collapsible: bool,
+    resizable: bool,
+    scroll: bool,
+}
+
+impl Default for WindowOptions {
+    fn default() -> Self {
+        Self {
+            title: "🗖 Window Options".to_owned(),
+            title_bar: true,
+            collapsible: true,
+            resizable: true,
+            scroll: false,
+        }
+    }
+}
+
+impl super::Demo for WindowOptions {
+    fn name(&self) -> &str {
+        // "🗖 Window Options"
+        &self.title
+    }
+
+    fn show(&mut self, ctx: &egui::CtxRef, open: &mut bool) {
+        let Self {
+            title,
+            title_bar,
+            collapsible,
+            resizable,
+            scroll,
+        } = self.clone();
+
+        use super::View;
+        egui::Window::new(title)
+            .id(egui::Id::new("demo_window_options")) // required since we change the title
+            .open(open)
+            .resizable(resizable)
+            .collapsible(collapsible)
+            .title_bar(title_bar)
+            .scroll(scroll)
+            .show(ctx, |ui| self.ui(ui));
+    }
+}
+
+impl super::View for WindowOptions {
+    fn ui(&mut self, ui: &mut egui::Ui) {
+        egui::reset_button(ui, self);
+
+        let Self {
+            title,
+            title_bar,
+            collapsible,
+            resizable,
+            scroll,
+        } = self;
+
+        ui.horizontal(|ui| {
+            ui.label("title:");
+            ui.text_edit_singleline(title);
+        });
+        ui.checkbox(title_bar, "title_bar");
+        ui.checkbox(collapsible, "collapsible");
+        ui.checkbox(resizable, "resizable");
+        ui.checkbox(scroll, "scroll");
+        ui.add(__egui_github_link_file!());
+    }
+}