[jimtabor] 72429: [NtUser] - Defer the changing of the window region while setting the window position. - Patch based on Stefano Toncich work. See CORE-6897 and possibly CORE-7229.

Author: jimtabor
Date: Mon Aug 22 13:28:02 2016
New Revision: 72429

URL: http://svn.reactos.org/svn/reactos?rev=72429&view=rev
Log:
[NtUser]
- Defer the changing of the window region while setting the window position.
- Patch based on Stefano Toncich work. See CORE-6897 and possibly CORE-7229.

Modified:
    trunk/reactos/win32ss/user/ntuser/winpos.c

Modified: trunk/reactos/win32ss/user/ntuser/winpos.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/user/ntuser/winpos…
==============================================================================
--- trunk/reactos/win32ss/user/ntuser/winpos.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/user/ntuser/winpos.c	[iso-8859-1] Mon Aug 22 13:28:02 2016
@@ -31,6 +31,40 @@
 VOID FASTCALL IntLinkWindow(PWND Wnd,PWND WndInsertAfter);
 
 /* FUNCTIONS *****************************************************************/
+
+#if DBG
+/***********************************************************************
+ *           dump_winpos_flags
+ */
+static void dump_winpos_flags(UINT flags)
+{
+    static const DWORD dumped_flags = (SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER |
SWP_NOREDRAW |
+                                       SWP_NOACTIVATE | SWP_FRAMECHANGED | SWP_SHOWWINDOW
|
+                                       SWP_HIDEWINDOW | SWP_NOCOPYBITS |
SWP_NOOWNERZORDER |
+                                       SWP_NOSENDCHANGING | SWP_DEFERERASE |
SWP_ASYNCWINDOWPOS |
+                                       SWP_NOCLIENTSIZE | SWP_NOCLIENTMOVE |
SWP_STATECHANGED);
+    TRACE("flags:");
+    if(flags & SWP_NOSIZE) TRACE(" SWP_NOSIZE");
+    if(flags & SWP_NOMOVE) TRACE(" SWP_NOMOVE");
+    if(flags & SWP_NOZORDER) TRACE(" SWP_NOZORDER");
+    if(flags & SWP_NOREDRAW) TRACE(" SWP_NOREDRAW");
+    if(flags & SWP_NOACTIVATE) TRACE(" SWP_NOACTIVATE");
+    if(flags & SWP_FRAMECHANGED) TRACE(" SWP_FRAMECHANGED");
+    if(flags & SWP_SHOWWINDOW) TRACE(" SWP_SHOWWINDOW");
+    if(flags & SWP_HIDEWINDOW) TRACE(" SWP_HIDEWINDOW");
+    if(flags & SWP_NOCOPYBITS) TRACE(" SWP_NOCOPYBITS");
+    if(flags & SWP_NOOWNERZORDER) TRACE(" SWP_NOOWNERZORDER");
+    if(flags & SWP_NOSENDCHANGING) TRACE(" SWP_NOSENDCHANGING");
+    if(flags & SWP_DEFERERASE) TRACE(" SWP_DEFERERASE");
+    if(flags & SWP_ASYNCWINDOWPOS) TRACE(" SWP_ASYNCWINDOWPOS");
+    if(flags & SWP_NOCLIENTSIZE) TRACE(" SWP_NOCLIENTSIZE");
+    if(flags & SWP_NOCLIENTMOVE) TRACE(" SWP_NOCLIENTMOVE");
+    if(flags & SWP_STATECHANGED) TRACE(" SWP_STATECHANGED");
+
+    if(flags & ~dumped_flags) TRACE(" %08x", flags & ~dumped_flags);
+    TRACE("\n");
+}
+#endif
 
 BOOL FASTCALL
 IntGetClientOrigin(PWND Window OPTIONAL, LPPOINT Point)
@@ -218,6 +252,30 @@
         return pWnd;
     }
     return NULL;
+}
+
+VOID
+SelectWindowRgn( PWND Window, HRGN hRgnClip)
+{
+    if (Window->hrgnClip)
+    {
+        /* Delete no longer needed region handle */
+        IntGdiSetRegionOwner(Window->hrgnClip, GDI_OBJ_HMGR_POWNED);
+        GreDeleteObject(Window->hrgnClip);
+        Window->hrgnClip = NULL;       
+    }
+
+    if (hRgnClip > HRGN_WINDOW)
+    {
+        /*if (Window != UserGetDesktopWindow()) // Window->fnid != FNID_DESKTOP)
+        {
+            NtGdiOffsetRgn(hRgnClip, Window->rcWindow.left, Window->rcWindow.top);
+        }*/
+        /* Set public ownership */
+        IntGdiSetRegionOwner(hRgnClip, GDI_OBJ_HMGR_PUBLIC);
+
+        Window->hrgnClip = hRgnClip;
+    }
 }
 
 //
@@ -1758,10 +1816,16 @@
    HDC Dc;
    RECTL CopyRect;
    PWND Ancestor;
-   BOOL bPointerInWindow;
+   BOOL bPointerInWindow, PosChanged = FALSE;
    //PTHREADINFO pti = PsGetCurrentThreadWin32Thread();
 
    ASSERT_REFS_CO(Window);
+
+   TRACE("pwnd %p, after %p, %d,%d (%dx%d), flags %s",
+          Window, WndInsertAfter, x, y, cx, cy, flags);
+#if DBG
+   dump_winpos_flags(flags);
+#endif
 
    /* FIXME: Get current active window from active queue. Why? since r2915. */
 
@@ -1862,6 +1926,13 @@
       }
    }
 
+   //// HACK 3
+   if (Window->hrgnNewFrame)
+   {
+       SelectWindowRgn( Window, Window->hrgnNewFrame ); // Should be
PSMWP->acvr->hrgnClip
+       Window->hrgnNewFrame = NULL;
+   }
+
    WvrFlags = co_WinPosDoNCCALCSize(Window, &WinPos, &NewWindowRect,
&NewClientRect, valid_rects);
 
 //   ERR("co_WinPosDoNCCALCSize returned 0x%x\n valid dest: %d %d %d %d\n valid src
: %d %d %d %d\n", WvrFlags,
@@ -1884,6 +1955,7 @@
       WinPosInternalMoveWindow(Window,
                                NewClientRect.left - OldClientRect.left,
                                NewClientRect.top - OldClientRect.top);
+      PosChanged = TRUE;
    }
 
    Window->rcWindow = NewWindowRect;
@@ -1951,11 +2023,12 @@
        * class need to be completely repainted on (horizontal/vertical) size
        * change.
        */
-      if ( VisBefore != NULL &&
-           VisAfter != NULL &&
-          !(WinPos.flags & SWP_NOCOPYBITS) &&
-          ((WinPos.flags & SWP_NOSIZE) || !(WvrFlags & WVR_REDRAW)) &&
-          !(Window->ExStyle & WS_EX_TRANSPARENT) )
+      if ( ( VisBefore != NULL &&
+             VisAfter != NULL &&
+            !(WinPos.flags & SWP_NOCOPYBITS) &&
+            ((WinPos.flags & SWP_NOSIZE) || !(WvrFlags & WVR_REDRAW)) &&
+            !(Window->ExStyle & WS_EX_TRANSPARENT) ) || 
+            ( !PosChanged && (WinPos.flags & SWP_FRAMECHANGED) &&
VisBefore) )
       {
 
          /*
@@ -2000,8 +2073,9 @@
             REGION_Delete(CopyRgn);
             CopyRgn = NULL;
          }
-         else if (OldWindowRect.left != NewWindowRect.left ||
-                  OldWindowRect.top != NewWindowRect.top)
+         else if ( OldWindowRect.left != NewWindowRect.left ||
+                   OldWindowRect.top != NewWindowRect.top ||
+                  (WinPos.flags & SWP_FRAMECHANGED) )
          {
              HRGN DcRgn = NtGdiCreateRectRgn(0, 0, 0, 0);
              PREGION DcRgnObj = REGION_LockRgn(DcRgn);
@@ -2041,7 +2115,19 @@
       {
          CopyRgn = NULL;
       }
-
+#if 0
+      /////// Fixes NoPopup tests but breaks msg_paint tests.
+      if ( !PosChanged && (WinPos.flags & SWP_FRAMECHANGED) &&
VisBefore)
+      {
+         PWND Parent = Window->spwndParent;
+         ERR("SWP_FRAMECHANGED no chg\n");
+         if ( !(Window->style & WS_CHILD) && (Parent) &&
(Parent->style & WS_CLIPCHILDREN))
+         {
+            ERR("SWP_FRAMECHANGED Parent WS_CLIPCHILDREN\n");
+            //IntInvalidateWindows( Window, VisBefore, /*RDW_ERASE |*/ RDW_FRAME |
RDW_INVALIDATE | RDW_ALLCHILDREN);
+         }
+      }
+#endif
       /* We need to redraw what wasn't visible before */
       if (VisAfter != NULL)
       {
@@ -3303,20 +3389,16 @@
          RETURN( 0);
    }
 
-   if (Window->hrgnClip)
-   {
-      /* Delete no longer needed region handle */
-      IntGdiSetRegionOwner(Window->hrgnClip, GDI_OBJ_HMGR_POWNED);
-      GreDeleteObject(Window->hrgnClip);
-   }
-
+   //// HACK 1 : Work around the lack of supporting DeferWindowPos.
    if (hrgnCopy)
    {
-      /* Set public ownership */
-      IntGdiSetRegionOwner(hrgnCopy, GDI_OBJ_HMGR_PUBLIC);
-   }
-   Window->hrgnClip = hrgnCopy;
-
+       Window->hrgnNewFrame = hrgnCopy; // Should be PSMWP->acvr->hrgnClip
+   }
+   else
+   {
+       Window->hrgnNewFrame = (HRGN) 1;
+   }
+   //// HACK 2
    Ret = co_WinPosSetWindowPos(Window, HWND_TOP, 0, 0, 0, 0, bRedraw ? flags :
(flags|SWP_NOREDRAW) );
 
    RETURN( (INT)Ret);