Added now window can be toggled embeded or not

crates/egui/src/containers/window.rs

@@ -166,6 +166,8 @@ pub struct Window<'open> {
     collapsible: bool,
     default_open: bool,
     with_title_bar: bool,
+    embedded: bool,
+    window_builder: WindowBuilder,
 }
 
 impl<'open> Window<'open> {
@@ -176,6 +178,7 @@ impl<'open> Window<'open> {
         let title = title.into().fallback_text_style(TextStyle::Heading);
         let area = Area::new(Id::new(title.text()));
         Self {
+            window_builder: WindowBuilder::default().with_title(title.text()),
             title,
             open: None,
             area,
@@ -188,6 +191,7 @@ impl<'open> Window<'open> {
             collapsible: true,
             default_open: true,
             with_title_bar: true,
+            embedded: true,
         }
     }
 
@@ -402,6 +406,11 @@ impl<'open> Window<'open> {
         self.area = self.area.drag_bounds(bounds);
         self
     }
+
+    pub fn embedded(mut self, value: bool) -> Self {
+        self.embedded = value;
+        self
+    }
 }
 
 impl<'open> Window<'open> {
@@ -421,8 +430,6 @@ impl<'open> Window<'open> {
         ctx: &Context,
         add_contents: Box<dyn FnOnce(&mut Ui) -> R + 'c>,
     ) -> Option<InnerResponse<Option<R>>> {
-        let window_id = ctx.create_window(WindowBuilder::default().with_title(self.title.text()));
-        println!("Window id: {}", window_id);
         let Window {
             title,
             open,
@@ -433,8 +440,17 @@ impl<'open> Window<'open> {
             collapsible,
             default_open,
             with_title_bar,
+            embedded,
+            window_builder,
         } = self;
 
+        let window_id = if !embedded {
+            ctx.create_window(window_builder)
+        } else {
+            0
+        };
+
+        if embedded || ctx.current_window_id() == window_id {
             let frame = frame.unwrap_or_else(|| Frame::window(&ctx.style()));
 
             let is_explicitly_closed = matches!(open, Some(false));
@@ -448,8 +464,11 @@ impl<'open> Window<'open> {
             let area_id = area.id;
             let area_layer_id = area.layer();
             let resize_id = area_id.with("resize");
-        let mut collapsing =
+            let mut collapsing = CollapsingState::load_with_default_open(
-            CollapsingState::load_with_default_open(ctx, area_id.with("collapsing"), default_open);
+                ctx,
+                area_id.with("collapsing"),
+                default_open,
+            );
 
             let is_collapsed = with_title_bar && !collapsing.is_open();
             let possible = PossibleInteractions::new(&area, &resize, is_collapsed);
@@ -496,7 +515,8 @@ impl<'open> Window<'open> {
             } else {
                 None
             };
-        let hover_interaction = resize_hover(ctx, possible, area_layer_id, last_frame_outer_rect);
+            let hover_interaction =
+                resize_hover(ctx, possible, area_layer_id, last_frame_outer_rect);
 
             let mut area_content_ui = area.content_ui(ctx);
 
@@ -588,6 +608,9 @@ impl<'open> Window<'open> {
                 response: full_response,
             };
             Some(inner_response)
+        } else {
+            None
+        }
     }
 }
 

examples/hello_world_simple/src/main.rs

@@ -28,7 +28,9 @@ fn main() -> Result<(), eframe::Error> {
             }
             ui.label(format!("Hello '{name}', age {age}"));
             egui::CollapsingHeader::new("Show Test1").show(ui, |ui| {
-                egui::Window::new("Test1").show(ctx, |ui| ui.label("Inside a window!"));
+                egui::Window::new("Test1")
+                    .embedded(false)
+                    .show(ctx, |ui| ui.label("Inside a window!"));
             });
             egui::CollapsingHeader::new("Shout Test2").show(ui, |ui| {
                 egui::Window::new("Test2").show(ctx, |ui| ui.label("Inside a window! 222"));