From 90370a08ecbdf670267ffebcecc53054f820b8a1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pa=CC=84vels=20Nadtoc=CC=8Cajevs?=
 <7645683+bruvzg@users.noreply.github.com>
Date: Tue, 26 Aug 2025 11:23:18 +0300
Subject: [PATCH] Clamp menus at the bottom of the screen.

---
 scene/gui/menu_button.cpp | 10 ++++++++++
 scene/gui/popup_menu.cpp  |  4 ++++
 2 files changed, 14 insertions(+)

diff --git a/scene/gui/menu_button.cpp b/scene/gui/menu_button.cpp
index ae74936a208..eb2e30ad0de 100644
--- a/scene/gui/menu_button.cpp
+++ b/scene/gui/menu_button.cpp
@@ -85,6 +85,16 @@ void MenuButton::show_popup() {
 		Transform2D xform = get_viewport()->get_popup_base_transform_native();
 		rect = xform.xform(rect);
 	}
+	Rect2i scr_usable = DisplayServer::get_singleton()->screen_get_usable_rect(get_window()->get_current_screen());
+	Size2i max_size;
+	if (scr_usable.has_area()) {
+		real_t max_h = scr_usable.get_end().y - rect.position.y;
+		real_t max_w = scr_usable.get_end().x - rect.position.x;
+		if (max_h >= 4 * rect.size.height && max_w >= rect.size.width) {
+			max_size = Size2i(max_w, max_h);
+		}
+	}
+	popup->set_max_size(max_size);
 	rect.size.height = 0;
 	popup->set_size(rect.size);
 	if (is_layout_rtl()) {
diff --git a/scene/gui/popup_menu.cpp b/scene/gui/popup_menu.cpp
index 33d2051d545..58fdaa50e1e 100644
--- a/scene/gui/popup_menu.cpp
+++ b/scene/gui/popup_menu.cpp
@@ -3230,6 +3230,10 @@ void PopupMenu::_pre_popup() {
 	set_content_scale_factor(popup_scale);
 	Size2 minsize = get_contents_minimum_size() * popup_scale;
 	minsize.height = Math::ceil(minsize.height); // Ensures enough height at fractional content scales to prevent the v_scroll_bar from showing.
+	real_t max_h = get_max_size().height;
+	if (max_h > 0) {
+		minsize.height = MIN(minsize.height, max_h);
+	}
 	set_min_size(minsize); // `height` is truncated here by the cast to Size2i for Window.min_size.
 	reset_size(); // Shrinkwraps to min size.
 }