user32: Add support for RTL window layouts in MapWindowPoints.

dlls/user32/tests/win.c

@@ -6164,6 +6164,44 @@ static void test_winregion(void)
     DestroyWindow(hwnd);
 }
 
+static void test_rtl_layout(void)
+{
+    HWND parent, child;
+    RECT r;
+    POINT pt;
+
+    if (!pSetProcessDefaultLayout)
+    {
+        win_skip( "SetProcessDefaultLayout not supported\n" );
+        return;
+    }
+
+    parent = CreateWindowExA(WS_EX_LAYOUTRTL, "static", NULL, WS_POPUP, 100, 100, 300, 300, NULL, 0, 0, NULL);
+    child = CreateWindowExA(0, "static", NULL, WS_CHILD, 10, 10, 20, 20, parent, 0, 0, NULL);
+
+    GetWindowRect( parent, &r );
+    ok( r.left == 100 && r.right == 400, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    GetClientRect( parent, &r );
+    ok( r.left == 0 && r.right == 300, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    GetClientRect( child, &r );
+    ok( r.left == 0 && r.right == 20, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    MapWindowPoints( child, parent, (POINT *)&r, 2 );
+    ok( r.left == 10 && r.right == 30, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    GetWindowRect( child, &r );
+    ok( r.left == 370 && r.right == 390, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    MapWindowPoints( NULL, parent, (POINT *)&r, 2 );
+    ok( r.left == 10 && r.right == 30, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    GetWindowRect( child, &r );
+    MapWindowPoints( NULL, parent, (POINT *)&r, 1 );
+    MapWindowPoints( NULL, parent, (POINT *)&r + 1, 1 );
+    ok( r.left == 30 && r.right == 10, "wrong rect %d,%d - %d,%d\n", r.left, r.top, r.right, r.bottom );
+    pt.x = pt.y = 12;
+    MapWindowPoints( child, parent, &pt, 1 );
+    ok( pt.x == 22 && pt.y == 22, "wrong point %d,%d\n", pt.x, pt.y );
+    DestroyWindow( child );
+    DestroyWindow( parent );
+}
+
 START_TEST(win)
 {
     HMODULE user32 = GetModuleHandleA( "user32.dll" );
@@ -6218,6 +6256,7 @@ START_TEST(win)
     test_capture_2();
     test_capture_3(hwndMain, hwndMain2);
     test_capture_4();
+    test_rtl_layout();
 
     test_CreateWindow();
     test_parent_owner();

dlls/user32/winpos.c

@@ -422,75 +422,83 @@ HWND WINAPI ChildWindowFromPointEx( HWND hwndParent, POINT pt, UINT uFlags)
  * Calculate the offset between the origin of the two windows. Used
  * to implement MapWindowPoints.
  */
-static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
+static POINT WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, BOOL *mirrored )
 {
     WND * wndPtr;
+    POINT offset;
+    BOOL mirror_from, mirror_to;
+    HWND hwnd;
 
-    offset->x = offset->y = 0;
+    offset.x = offset.y = 0;
+    *mirrored = mirror_from = mirror_to = FALSE;
 
     /* Translate source window origin to screen coords */
     if (hwndFrom)
     {
-        HWND hwnd = hwndFrom;
-
-        while (hwnd)
+        if (!(wndPtr = WIN_GetPtr( hwndFrom ))) return offset;
+        if (wndPtr == WND_OTHER_PROCESS) goto other_process;
+        if (wndPtr != WND_DESKTOP)
         {
-            if (hwnd == hwndTo) return;
-            if (!(wndPtr = WIN_GetPtr( hwnd )))
+            if (wndPtr->dwExStyle & WS_EX_LAYOUTRTL)
             {
-                ERR( "bad hwndFrom = %p\n", hwnd );
-                return;
+                mirror_from = TRUE;
+                offset.x += wndPtr->rectClient.right - wndPtr->rectClient.left;
             }
-            if (wndPtr == WND_DESKTOP) break;
-            if (wndPtr == WND_OTHER_PROCESS) goto other_process;
-            if (wndPtr->parent)
+            while (wndPtr != WND_DESKTOP)
             {
-                offset->x += wndPtr->rectClient.left;
-                offset->y += wndPtr->rectClient.top;
+                offset.x += wndPtr->rectClient.left;
+                offset.y += wndPtr->rectClient.top;
+                hwnd = wndPtr->parent;
+                WIN_ReleasePtr( wndPtr );
+                if (!(wndPtr = WIN_GetPtr( hwnd ))) break;
+                if (wndPtr == WND_OTHER_PROCESS) goto other_process;
             }
-            hwnd = wndPtr->parent;
-            WIN_ReleasePtr( wndPtr );
         }
     }
 
     /* Translate origin to destination window coords */
     if (hwndTo)
     {
-        HWND hwnd = hwndTo;
-
-        while (hwnd)
+        if (!(wndPtr = WIN_GetPtr( hwndTo ))) return offset;
+        if (wndPtr == WND_OTHER_PROCESS) goto other_process;
+        if (wndPtr != WND_DESKTOP)
         {
-            if (!(wndPtr = WIN_GetPtr( hwnd )))
+            if (wndPtr->dwExStyle & WS_EX_LAYOUTRTL)
             {
-                ERR( "bad hwndTo = %p\n", hwnd );
-                return;
+                mirror_to = TRUE;
+                offset.x -= wndPtr->rectClient.right - wndPtr->rectClient.left;
             }
-            if (wndPtr == WND_DESKTOP) break;
-            if (wndPtr == WND_OTHER_PROCESS) goto other_process;
-            if (wndPtr->parent)
+            while (wndPtr != WND_DESKTOP)
             {
-                offset->x -= wndPtr->rectClient.left;
-                offset->y -= wndPtr->rectClient.top;
+                offset.x -= wndPtr->rectClient.left;
+                offset.y -= wndPtr->rectClient.top;
+                hwnd = wndPtr->parent;
+                WIN_ReleasePtr( wndPtr );
+                if (!(wndPtr = WIN_GetPtr( hwnd ))) break;
+                if (wndPtr == WND_OTHER_PROCESS) goto other_process;
             }
-            hwnd = wndPtr->parent;
-            WIN_ReleasePtr( wndPtr );
         }
     }
-    return;
+
+    *mirrored = mirror_from ^ mirror_to;
+    if (mirror_from) offset.x = -offset.x;
+    return offset;
 
  other_process:  /* one of the parents may belong to another process, do it the hard way */
-    offset->x = offset->y = 0;
+    offset.x = offset.y = 0;
     SERVER_START_REQ( get_windows_offset )
     {
         req->from = wine_server_user_handle( hwndFrom );
         req->to   = wine_server_user_handle( hwndTo );
         if (!wine_server_call( req ))
         {
-            offset->x = reply->x;
-            offset->y = reply->y;
+            offset.x = reply->x;
+            offset.y = reply->y;
+            *mirrored = reply->mirror;
         }
     }
     SERVER_END_REQ;
+    return offset;
 }
 
 
@@ -499,14 +507,21 @@ static void WINPOS_GetWinOffset( HWND hwndFrom, HWND hwndTo, POINT *offset )
  */
 INT WINAPI MapWindowPoints( HWND hwndFrom, HWND hwndTo, LPPOINT lppt, UINT count )
 {
-    POINT offset;
+    BOOL mirrored;
+    POINT offset = WINPOS_GetWinOffset( hwndFrom, hwndTo, &mirrored );
+    UINT i;
 
-    WINPOS_GetWinOffset( hwndFrom, hwndTo, &offset );
-    while (count--)
+    for (i = 0; i < count; i++)
+    {
+        lppt[i].x += offset.x;
+        lppt[i].y += offset.y;
+        if (mirrored) lppt[i].x = -lppt[i].x;
+    }
+    if (mirrored && count == 2)  /* special case for rectangle */
     {
-	lppt->x += offset.x;
-	lppt->y += offset.y;
-        lppt++;
+        int tmp = lppt[0].x;
+        lppt[0].x = lppt[1].x;
+        lppt[1].x = tmp;
     }
     return MAKELONG( LOWORD(offset.x), LOWORD(offset.y) );
 }

include/wine/server_protocol.h

@@ -3328,6 +3328,8 @@ struct get_windows_offset_reply
     struct reply_header __header;
     int            x;
     int            y;
+    int            mirror;
+    char __pad_20[4];
 };
 
 
@@ -5517,6 +5519,6 @@ union generic_reply
     struct set_cursor_reply set_cursor_reply;
 };
 
-#define SERVER_PROTOCOL_VERSION 409
+#define SERVER_PROTOCOL_VERSION 410
 
 #endif /* __WINE_WINE_SERVER_PROTOCOL_H */

server/protocol.def

@@ -2383,6 +2383,7 @@ enum coords_relative
 @REPLY
     int            x;             /* x coordinate offset */
     int            y;             /* y coordinate offset */
+    int            mirror;        /* whether to mirror the x coordinate */
 @END
 
 

server/request.h

@@ -1605,7 +1605,8 @@ C_ASSERT( FIELD_OFFSET(struct get_windows_offset_request, to) == 16 );
 C_ASSERT( sizeof(struct get_windows_offset_request) == 24 );
 C_ASSERT( FIELD_OFFSET(struct get_windows_offset_reply, x) == 8 );
 C_ASSERT( FIELD_OFFSET(struct get_windows_offset_reply, y) == 12 );
-C_ASSERT( sizeof(struct get_windows_offset_reply) == 16 );
+C_ASSERT( FIELD_OFFSET(struct get_windows_offset_reply, mirror) == 16 );
+C_ASSERT( sizeof(struct get_windows_offset_reply) == 24 );
 C_ASSERT( FIELD_OFFSET(struct get_visible_region_request, window) == 12 );
 C_ASSERT( FIELD_OFFSET(struct get_visible_region_request, flags) == 16 );
 C_ASSERT( sizeof(struct get_visible_region_request) == 24 );

server/trace.c

@@ -2839,6 +2839,7 @@ static void dump_get_windows_offset_reply( const struct get_windows_offset_reply
 {
     fprintf( stderr, " x=%d", req->x );
     fprintf( stderr, ", y=%d", req->y );
+    fprintf( stderr, ", mirror=%d", req->mirror );
 }
 
 static void dump_get_visible_region_request( const struct get_visible_region_request *req )

server/window.c

@@ -2193,11 +2193,17 @@ DECL_HANDLER(set_window_text)
 DECL_HANDLER(get_windows_offset)
 {
     struct window *win;
+    int mirror_from = 0, mirror_to = 0;
 
     reply->x = reply->y = 0;
     if (req->from)
     {
         if (!(win = get_window( req->from ))) return;
+        if (win->ex_style & WS_EX_LAYOUTRTL)
+        {
+            mirror_from = 1;
+            reply->x += win->client_rect.right - win->client_rect.left - 1;
+        }
         while (win && !is_desktop_window(win))
         {
             reply->x += win->client_rect.left;
@@ -2208,6 +2214,11 @@ DECL_HANDLER(get_windows_offset)
     if (req->to)
     {
         if (!(win = get_window( req->to ))) return;
+        if (win->ex_style & WS_EX_LAYOUTRTL)
+        {
+            mirror_to = 1;
+            reply->x -= win->client_rect.right - win->client_rect.left - 1;
+        }
         while (win && !is_desktop_window(win))
         {
             reply->x -= win->client_rect.left;
@@ -2215,6 +2226,8 @@ DECL_HANDLER(get_windows_offset)
             win = win->parent;
         }
     }
+    if (mirror_from) reply->x = -reply->x;
+    reply->mirror = mirror_from ^ mirror_to;
 }