[PATCH v8 4/8] win32u: Split hardware message window lookup to a separate helper.

[Rémi Bernon]

From: Rémi Bernon

---
 dlls/win32u/message.c | 63 +++++++++++++++++++++----------------------
 1 file changed, 31 insertions(+), 32 deletions(-)

diff --git a/dlls/win32u/message.c b/dlls/win32u/message.c
index d303f32aa9b..547bc5543b1 100644
--- a/dlls/win32u/message.c
+++ b/dlls/win32u/message.c
@@ -2403,49 +2403,43 @@ static BOOL process_keyboard_message( MSG *msg, UINT hw_id, HWND hwnd_filter,
     return TRUE;
 }

+static HWND find_hardware_message_window( MSG *msg, GUITHREADINFO *info, INT *hittest )
+{
+    HWND target;
+
+    if (!is_mouse_message( msg->message )) return msg->hwnd;
+
+    /* find the window to dispatch this mouse message to */
+
+    if ((target = info->hwndCapture)) *hittest = HTCLIENT;
+    else if (!(target = window_from_point( msg->hwnd, msg->pt, hittest, 0 /* per-monitor DPI */ )))
+    {
+        /* As a heuristic, try the next window if it's the owner of orig */
+        HWND next = get_window_relative( msg->hwnd, GW_HWNDNEXT );
+        if (next && get_window_relative( msg->hwnd, GW_OWNER ) == next && is_current_thread_window( next ))
+            target = window_from_point( next, msg->pt, hittest, 0 /* per-monitor DPI */ );
+    }
+
+    return target;
+}
+
 /***********************************************************************
  *          process_mouse_message
  *
  * returns TRUE if the contents of 'msg' should be passed to the application
  */
 static BOOL process_mouse_message( MSG *msg, UINT hw_id, ULONG_PTR extra_info, HWND hwnd_filter,
-                                   UINT first, UINT last, BOOL remove )
+                                   UINT first, UINT last, BOOL remove, GUITHREADINFO *info, INT hittest )
 {
     static MSG clk_msg;

POINT pt;
     UINT message;
-    INT hittest;
     EVENTMSG event;
-    GUITHREADINFO info;
     MOUSEHOOKSTRUCTEX hook;
     BOOL eat_msg;
     WPARAM wparam;

-    /* find the window to dispatch this mouse message to */
-
-    info.cbSize = sizeof(info);
-    NtUserGetGUIThreadInfo( GetCurrentThreadId(), &info );
-    if (info.hwndCapture)
-    {
-        hittest = HTCLIENT;
-        msg->hwnd = info.hwndCapture;
-    }
-    else
-    {
-        HWND orig = msg->hwnd;
-
-        msg->hwnd = window_from_point( msg->hwnd, msg->pt, &hittest, 0 /* per-monitor DPI */ );
-        if (!msg->hwnd) /* As a heuristic, try the next window if it's the owner of orig */
-        {
-            HWND next = get_window_relative( orig, GW_HWNDNEXT );
-
-            if (next && get_window_relative( orig, GW_OWNER ) == next &&
-                is_current_thread_window( next ))
-                msg->hwnd = window_from_point( next, msg->pt, &hittest, 0 /* per-monitor DPI */ );
-        }
-    }
-
     if (!msg->hwnd || !is_current_thread_window( msg->hwnd ))
     {
         accept_hardware_message( hw_id );
@@ -2480,7 +2474,7 @@ static BOOL process_mouse_message( MSG *msg, UINT hw_id, ULONG_PTR extra_info, H
         {
             /* coordinates don't get translated while tracking a menu */
             /* FIXME: should differentiate popups and top-level menus */
-            if (!(info.flags & GUI_INMENUMODE))
+            if (!(info->flags & GUI_INMENUMODE))
                 screen_to_client( msg->hwnd, &pt );
         }
     }
@@ -2499,7 +2493,7 @@ static BOOL process_mouse_message( MSG *msg, UINT hw_id, ULONG_PTR extra_info, H
     * note that ...MOUSEMOVEs can slip in between
     * ...BUTTONDOWN and ...BUTTONDBLCLK messages */

-        if ((info.flags & (GUI_INMENUMODE|GUI_INMOVESIZE)) ||
+        if ((info->flags & (GUI_INMENUMODE|GUI_INMOVESIZE)) ||
             hittest != HTCLIENT ||
             (get_class_long( msg->hwnd, GCL_STYLE, FALSE ) & CS_DBLCLKS))
         {
@@ -2556,7 +2550,7 @@ static BOOL process_mouse_message( MSG *msg, UINT hw_id, ULONG_PTR extra_info, H

if (remove) accept_hardware_message( hw_id );

-    if (!remove || info.hwndCapture)
+    if (!remove || info->hwndCapture)
     {
         msg->message = message;
         return TRUE;
@@ -2577,7 +2571,7 @@ static BOOL process_mouse_message( MSG *msg, UINT hw_id, ULONG_PTR extra_info, H

/* Activate the window if needed */

-        if (msg->hwnd != info.hwndActive)
+        if (msg->hwnd != info->hwndActive)
         {
             HWND hwndTop = NtUserGetAncestor( msg->hwnd, GA_ROOT );

@@ -2626,12 +2620,17 @@ static BOOL process_hardware_message( MSG *msg, UINT hw_id, const struct hardwar
                                       HWND hwnd_filter, UINT first, UINT last, BOOL remove )
 {
     struct ntuser_thread_info *thread_info = NtUserGetThreadInfo();
+    GUITHREADINFO info = {.cbSize = sizeof(info)};
     UINT context;
     BOOL ret = FALSE;
+    INT hittest;

thread_info->msg_source.deviceType = msg_data->source.device;
     thread_info->msg_source.originId   = msg_data->source.origin;

+    NtUserGetGUIThreadInfo( GetCurrentThreadId(), &info );
+    msg->hwnd = find_hardware_message_window( msg, &info, &hittest );
+
     /* hardware messages are always in physical coords */
     context = set_thread_dpi_awareness_context( NTUSER_DPI_PER_MONITOR_AWARE );

@@ -2640,7 +2639,7 @@ static BOOL process_hardware_message( MSG *msg, UINT hw_id, const struct hardwar
     else if (is_keyboard_message( msg->message ))
         ret = process_keyboard_message( msg, hw_id, hwnd_filter, first, last, remove );
     else if (is_mouse_message( msg->message ))
-        ret = process_mouse_message( msg, hw_id, msg_data->info, hwnd_filter, first, last, remove );
+        ret = process_mouse_message( msg, hw_id, msg_data->info, hwnd_filter, first, last, remove, &info, hittest );
     else if (msg->message >= WM_POINTERUPDATE && msg->message <= WM_POINTERLEAVE)
         ret = process_pointer_message( msg, hw_id, msg_data );
     else if (msg->message == WM_WINE_CLIPCURSOR)