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win32u: Intersect the clipping region with the window shape region.

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Rémi Bernon 2024-04-26 14:35:50 +02:00 committed by Alexandre Julliard
parent 7cdf20267c
commit 046d55ab6a
1 changed files with 13 additions and 2 deletions
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15
dlls/win32u/window.c
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@ -1765,22 +1765,33 @@ static NTSTATUS get_window_region( HWND hwnd, BOOL surface, HRGN *region, RECT *
static void update_surface_region( HWND hwnd )
{
WND *win = get_win_ptr( hwnd );
HRGN region;
HRGN region, shape = 0;
RECT visible;
if (!win || win == WND_DESKTOP || win == WND_OTHER_PROCESS) return;
if (!win->surface) goto done;
if (get_window_region( hwnd, FALSE, &shape, &visible )) goto done;
if (shape)
{
region = NtGdiCreateRectRgn( 0, 0, visible.right - visible.left, visible.bottom - visible.top );
NtGdiCombineRgn( shape, shape, region, RGN_AND );
if (win->dwExStyle & WS_EX_LAYOUTRTL) NtUserMirrorRgn( hwnd, shape );
NtGdiDeleteObjectApp( region );
}
if (get_window_region( hwnd, TRUE, &region, &visible )) goto done;
if (!region) win->surface->funcs->set_region( win->surface, 0 );
if (!region) win->surface->funcs->set_region( win->surface, shape );
else
{
NtGdiOffsetRgn( region, -visible.left, -visible.top );
if (shape) NtGdiCombineRgn( region, region, shape, RGN_AND );
win->surface->funcs->set_region( win->surface, region );
NtGdiDeleteObjectApp( region );
}
done:
if (shape) NtGdiDeleteObjectApp( shape );
release_win_ptr( win );
}