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xwayland: Fix incorrect pointer coordinates in enter events

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Xwayland was sending incorrect pointer coordinates to X clients on
pointer enter events.

This was caused by calling CheckMotion() with a NULL event, which
prevented the pointer sprite hot coordinates from being updated
properly.

Fix this by constructing a proper DeviceEvent of type ET_Enter in
pointer_handle_enter, initializing it with the current timestamp
and EVENT_SOURCE_FOCUS, and passing it to CheckMotion() instead
of NULL.

This ensures the pointer sprite coordinates are correctly updated
when the pointer enters a window.

Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2113>
(cherry picked from commit 7fb5e00ad8)
This commit is contained in:
Liu Heng 2025-12-12 19:34:16 +08:00 • committed by Alan Coopersmith
parent 7f1050de78
commit b4c5796e4b
1 changed files with 4 additions and 1 deletions
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5
hw/xwayland/xwayland-input.c
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@ -524,6 +524,7 @@ pointer_handle_enter(void *data, struct wl_pointer *pointer,
int dx, dy;
ScreenPtr pScreen = xwl_screen->screen;
ValuatorMask mask;
DeviceEvent enter;
/* There's a race here where if we create and then immediately
* destroy a surface, we might end up in a state where the Wayland
@ -554,8 +555,10 @@ pointer_handle_enter(void *data, struct wl_pointer *pointer,
(*pScreen->SetCursorPosition) (dev, pScreen, dx + sx, dy + sy, TRUE);
miPointerInvalidateSprite(master);
init_device_event(&enter, dev, currentTime.milliseconds, EVENT_SOURCE_FOCUS);
enter.type = ET_Enter;
CheckMotion(NULL, master);
CheckMotion(&enter, master);
/* Ideally, X clients shouldn't see these button releases. When
* the pointer leaves a window with buttons down, it means that