From b8938e01c49256531c9a3b8adda870874b99a354 Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emilernerfeldt@gmail.com>
Date: Fri, 28 Aug 2020 16:21:35 +0200
Subject: [PATCH] [demo] add menu option to auto-reorganize windows

---
 egui/src/demos/app.rs | 9 ++++++++-
 egui/src/memory.rs    | 6 ++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/egui/src/demos/app.rs b/egui/src/demos/app.rs
index 680d7f3b..ae9e5c4f 100644
--- a/egui/src/demos/app.rs
+++ b/egui/src/demos/app.rs
@@ -236,7 +236,14 @@ impl OpenWindows {
 fn show_menu_bar(ui: &mut Ui, windows: &mut OpenWindows) {
     menu::bar(ui, |ui| {
         menu::menu(ui, "File", |ui| {
-            if ui.add(Button::new("Clear memory")).clicked {
+            if ui.add(Button::new("Reorganize windows")).clicked {
+                ui.ctx().memory().reset_areas();
+            }
+            if ui
+                .add(Button::new("Clear entire Egui memory"))
+                .tooltip_text("Forget scroll, collapsibles etc")
+                .clicked
+            {
                 *ui.ctx().memory() = Default::default();
             }
         });
diff --git a/egui/src/memory.rs b/egui/src/memory.rs
index 9619ae78..ad7f3029 100644
--- a/egui/src/memory.rs
+++ b/egui/src/memory.rs
@@ -152,6 +152,12 @@ impl Memory {
             self.interaction.kb_focus_id = None;
         }
     }
+
+    /// Forget window positions, sizes etc.
+    /// Can be used to auto-layout windows.
+    pub fn reset_areas(&mut self) {
+        self.areas = Default::default();
+    }
 }
 
 impl Areas {