From f71cbc247560bc45f988ca2e5288266788194ec5 Mon Sep 17 00:00:00 2001
From: ItsEthra <107059409+ItsEthra@users.noreply.github.com>
Date: Mon, 31 Oct 2022 19:57:15 +0300
Subject: [PATCH] Fixed menu popups going outside of the screen (#2191)

* Fixed menu popups going outside of the screen

* Made menu appear above above the button instead
---
 crates/egui/src/menu.rs | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/crates/egui/src/menu.rs b/crates/egui/src/menu.rs
index 1950cb83..a697e2da 100644
--- a/crates/egui/src/menu.rs
+++ b/crates/egui/src/menu.rs
@@ -288,7 +288,22 @@ impl MenuRoot {
         {
             // menu not open and button clicked
             // or button hovered while other menu is open
-            let pos = response.rect.left_bottom();
+            drop(input);
+
+            let mut pos = response.rect.left_bottom();
+            if let Some(root) = root.inner.as_mut() {
+                let menu_rect = root.menu_state.read().rect;
+                let screen_rect = response.ctx.input().screen_rect;
+
+                if pos.y + menu_rect.height() > screen_rect.max.y {
+                    pos.y = screen_rect.max.y - menu_rect.height() - response.rect.height();
+                }
+
+                if pos.x + menu_rect.width() > screen_rect.max.x {
+                    pos.x = screen_rect.max.x - menu_rect.width();
+                }
+            }
+
             return MenuResponse::Create(pos, id);
         } else if input.pointer.any_pressed() && input.pointer.primary_down() {
             if let Some(pos) = input.pointer.interact_pos() {