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- Calculate changes in the client area relative to the window 

instead of its parent when using SWP_EX_PAINTSELF.
- With SWP_EX_PAINTSELF, copy only if client area changed, since a
  window can't move relative to itself.
- In SWP_DoNCCalcSize, when determining if the client area
  changed, use values relative to the window itself, not its parent.
This commit is contained in:
Louis Philippe Gagnon 2000-10-23 00:36:06 +00:00 committed by Alexandre Julliard
parent 409eb44eb0
commit e4ab07e0fe
1 changed files with 36 additions and 11 deletions
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47
windows/winpos.c
View File

@ -2212,9 +2212,6 @@ END:
* visible and update regions are in window coordinates
* client and window rectangles are in parent client coordinates
*
* FIXME: SWP_EX_PAINTSELF in uFlags works only if both old and new
* window rects have the same origin.
*
* Returns: uFlags and a dirty region in *pVisRgn.
*/
static UINT SWP_CopyValidBits( WND* Wnd, HRGN* pVisRgn,
@ -2289,8 +2286,20 @@ nocopy:
((lpOldClientRect->left - lpOldWndRect->left) !=
(Wnd->rectClient.left - Wnd->rectWindow.left)) )
{
dx = Wnd->rectClient.left - lpOldClientRect->left;
dy = Wnd->rectClient.top - lpOldClientRect->top;
if(uFlags & SWP_EX_PAINTSELF)
{
/* movement relative to the window itself */
dx = (Wnd->rectClient.left - Wnd->rectWindow.left) -
(lpOldClientRect->left - lpOldWndRect->left) ;
dy = (Wnd->rectClient.top - Wnd->rectWindow.top) -
(lpOldClientRect->top - lpOldWndRect->top) ;
}
else
{
/* movement relative to the parent's client area */
dx = Wnd->rectClient.left - lpOldClientRect->left;
dy = Wnd->rectClient.top - lpOldClientRect->top;
}
/* restrict valid bits to the common client rect */
@ -2308,10 +2317,21 @@ nocopy:
}
else
{
dx = Wnd->rectWindow.left - lpOldWndRect->left;
dy = Wnd->rectWindow.top - lpOldWndRect->top;
if( !(uFlags & SWP_EX_PAINTSELF) )
OffsetRgn( hrgnValid, Wnd->rectWindow.left, Wnd->rectWindow.top );
if(uFlags & SWP_EX_PAINTSELF) {
/*
* with SWP_EX_PAINTSELF, the window repaints itself. Since a window can't move
* relative to itself, only the client area can change.
* if the client rect didn't change, there's nothing to do.
*/
dx = 0;
dy = 0;
}
else
{
dx = Wnd->rectWindow.left - lpOldWndRect->left;
dy = Wnd->rectWindow.top - lpOldWndRect->top;
OffsetRgn( hrgnValid, Wnd->rectWindow.left, Wnd->rectWindow.top );
}
r = *lpOldWndRect;
}
@ -2513,9 +2533,14 @@ static UINT SWP_DoNCCalcSize( WND* wndPtr, WINDOWPOS* pWinpos,
/* FIXME: WVR_ALIGNxxx */
if( pNewClientRect->left != wndPtr->rectClient.left ||
pNewClientRect->top != wndPtr->rectClient.top )
/* check if client area moved relative to the window */
if ( ( (wndPtr->rectClient.left - pNewClientRect->left) !=
(wndPtr->rectWindow.left - pNewWindowRect->left) ) ||
( (wndPtr->rectClient.top - pNewClientRect->top) !=
(wndPtr->rectWindow.top - pNewWindowRect->top) ) )
{
pWinpos->flags &= ~SWP_NOCLIENTMOVE;
}
if( (pNewClientRect->right - pNewClientRect->left !=
wndPtr->rectClient.right - wndPtr->rectClient.left) ||