From bc0a43ec7fc5fbddc28d2c06eb7e190eebf19ca5 Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Mon, 24 Aug 2026 12:04:36 -0400
Subject: [PATCH] wayland: Don't perform hit testing during implicit pointer
grabs
Skip hit testing when an implicit grab is active, or button raise events may be lost, and the cursor icon may be improperly set if the client reports hit test results while the pointer is outside the window bounds.
---
src/video/wayland/SDL_waylandevents.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/src/video/wayland/SDL_waylandevents.c b/src/video/wayland/SDL_waylandevents.c
index 9831c7d66566d..7c5c35fe482f9 100644
--- a/src/video/wayland/SDL_waylandevents.c
+++ b/src/video/wayland/SDL_waylandevents.c
@@ -670,7 +670,8 @@ static void pointer_dispatch_absolute_motion(SDL_WaylandSeat *seat, bool warp)
Wayland_SeatUpdatePointerGrab(seat);
}
- if (window->hit_test) {
+ // Don't perform hit testing if an implicit grab is active.
+ if (!(window->flags & SDL_WINDOW_MOUSE_CAPTURE) && window->hit_test) {
SDL_HitTestResult rc = window->hit_test(window, &seat->pointer.last_motion, window->hit_test_data);
// Apply the toplevel constraints if the window isn't resizable from those directions.
@@ -984,14 +985,14 @@ static void pointer_dispatch_button(SDL_WaylandSeat *seat, Uint8 sdl_button, boo
if (down) {
seat->pointer.buttons_pressed |= SDL_BUTTON_MASK(sdl_button);
+
+ if (sdl_button == SDL_BUTTON_LEFT && Wayland_ProcessHitTest(seat, seat->last_implicit_grab_serial)) {
+ return; // don't pass this event on to app.
+ }
} else {
seat->pointer.buttons_pressed &= ~SDL_BUTTON_MASK(sdl_button);
}
- if (sdl_button == SDL_BUTTON_LEFT && Wayland_ProcessHitTest(seat, seat->last_implicit_grab_serial)) {
- return; // don't pass this event on to app.
- }
-
// Possibly ignore this click if it was to gain focus.
if (window->last_focus_event_time_ns) {
if (down && (SDL_GetTicksNS() - window->last_focus_event_time_ns) < WAYLAND_FOCUS_CLICK_TIMEOUT_NS) {