Rémi Bernon : win32u: Add a clipping_cursor member to user_thread_info.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 3cca65e3283d12d5b61b2ac9b314c36c30a3fa1d
URL:    https://gitlab.winehq.org/wine/wine/-/commit/3cca65e3283d12d5b61b2ac9b314c36...

Author: Rémi Bernon 
Date:   Wed May 31 18:43:48 2023 +0200

win32u: Add a clipping_cursor member to user_thread_info.

---

dlls/win32u/input.c          | 9 ++++++++-
 dlls/win32u/ntuser_private.h | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/dlls/win32u/input.c b/dlls/win32u/input.c
index 2b951576c57..0dc166986f3 100644
--- a/dlls/win32u/input.c
+++ b/dlls/win32u/input.c
@@ -404,6 +404,7 @@ static const KBDTABLES kbdus_tables =
     .fLocaleFlags = MAKELONG(0, KBD_VERSION),
 };

+static LONG clipping_cursor; /* clipping thread counter */

LONG global_key_state_counter = 0;
 BOOL grab_pointer = TRUE;
@@ -2504,6 +2505,9 @@ BOOL process_wine_clipcursor( BOOL empty, BOOL reset )

TRACE( "empty %u, reset %u\n", empty, reset );

+    if (thread_info->clipping_cursor) InterlockedDecrement( &clipping_cursor );
+    thread_info->clipping_cursor = FALSE;
+
     if (reset)
     {
         thread_info->clipping_reset = NtGetTickCount();
@@ -2514,7 +2518,10 @@ BOOL process_wine_clipcursor( BOOL empty, BOOL reset )
     if (empty) return user_driver->pClipCursor( NULL, reset );

get_clip_cursor( &rect );
-    return user_driver->pClipCursor( &rect, FALSE );
+    if (!user_driver->pClipCursor( &rect, FALSE )) return FALSE;
+    InterlockedIncrement( &clipping_cursor );
+    thread_info->clipping_cursor = TRUE;
+    return TRUE;
 }

/***********************************************************************
diff --git a/dlls/win32u/ntuser_private.h b/dlls/win32u/ntuser_private.h
index 88e644d2522..b39e38db5d6 100644
--- a/dlls/win32u/ntuser_private.h
+++ b/dlls/win32u/ntuser_private.h
@@ -130,6 +130,7 @@ struct user_thread_info
     UINT                          kbd_layout_id;          /* Current keyboard layout ID */
     struct rawinput_thread_data  *rawinput;               /* RawInput thread local data / buffer */
     UINT                          spy_indent;             /* Current spy indent */
+    BOOL                          clipping_cursor;        /* thread is currently clipping */
     DWORD                         clipping_reset;         /* time when clipping was last reset */
 };