From ec7dbed3267d1e026c37439c46ed2c89d902fd3a Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sun, 26 Jul 2026 15:51:09 +0200
Subject: [PATCH] Fix "Wayland: Tooltip at bottom right screen flickers"
 (#1543)

---
 src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
index af6fc1ec9..b9db671cf 100644
--- a/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
+++ b/src/drivers/Wayland/Fl_Wayland_Window_Driver.cxx
@@ -1444,6 +1444,15 @@ bool Fl_Wayland_Window_Driver::process_menu_or_tooltip(struct wld_window *new_wi
     }
     xdg_positioner_set_constraint_adjustment(positioner, constraint);
   }
+  if (pWindow->tooltip_window()) {
+    xdg_positioner_set_constraint_adjustment(positioner,
+      XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_SLIDE_X |
+      XDG_POSITIONER_CONSTRAINT_ADJUSTMENT_FLIP_Y);
+    int dummy, scr_H;
+    Fl::screen_xywh(dummy, dummy, dummy, scr_H);
+    popup_y = Fl::event_y();
+    if (popup_y + pWindow->h() > scr_H) popup_y--;
+  }
   if (!(Fl_Window_Driver::menu_title(pWindow) && Fl_Window_Driver::menu_bartitle(pWindow))) {
     xdg_positioner_set_offset(positioner, 0, popup_y);
   }