-/*
- Old GetUpdateRgn, for scrolls, see above note.
- */
-INT FASTCALL
-co_IntGetUpdateRgn(PWND Window, PREGION Rgn, BOOL bErase)
-{
- int RegionType;
- RECTL Rect;
- PREGION UpdateRgn;
-
- ASSERT_REFS_CO(Window);
-
- if (bErase)
- {
- co_IntPaintWindows(Window, RDW_NOCHILDREN, FALSE);
- }
-
- Window->state &= ~WNDS_UPDATEDIRTY;
-
- if (Window->hrgnUpdate == NULL)
- {
- REGION_SetRectRgn(Rgn, 0, 0, 0, 0);
- return NULLREGION;
- }
-
- UpdateRgn = REGION_LockRgn(Window->hrgnUpdate);
- if (!UpdateRgn)
- return ERROR;
-
- Rect = Window->rcClient;
- IntIntersectWithParents(Window, &Rect);
- REGION_SetRectRgn(Rgn, Rect.left, Rect.top, Rect.right, Rect.bottom);
- RegionType = IntGdiCombineRgn(Rgn, Rgn, UpdateRgn, RGN_AND);
- REGION_bOffsetRgn(Rgn, -Window->rcClient.left, -Window->rcClient.top);
- REGION_UnlockRgn(UpdateRgn);
-
- return RegionType;
-}
-
-static
-INT FASTCALL
-UserScrollDC(
- HDC hDC,
- INT dx,
- INT dy,
- const RECTL *prcScroll,
- const RECTL *prcClip,
- HRGN hrgnUpdate,
- PREGION RgnUpdate,
- RECTL *prcUpdate)
-{
- PDC pDC;
- RECTL rcScroll, rcClip, rcSrc, rcDst;
- INT Result;
-
- if (GdiGetClipBox(hDC, &rcClip) == ERROR)
- {
- ERR("GdiGetClipBox failed for HDC %p\n", hDC);
- return ERROR;
- }
-
- rcScroll = rcClip;
- if (prcClip)
- {
- RECTL_bIntersectRect(&rcClip, &rcClip, prcClip);
- }
-
- if (prcScroll)
- {
- rcScroll = *prcScroll;
- RECTL_bIntersectRect(&rcSrc, &rcClip, prcScroll);
- }
- else
- {
- rcSrc = rcClip;
- }
-
- rcDst = rcSrc;
- RECTL_vOffsetRect(&rcDst, dx, dy);
- RECTL_bIntersectRect(&rcDst, &rcDst, &rcClip);
-
- if (!NtGdiBitBlt( hDC,
- rcDst.left,
- rcDst.top,
- rcDst.right - rcDst.left,
- rcDst.bottom - rcDst.top,
- hDC,
- rcDst.left - dx,
- rcDst.top - dy,
- SRCCOPY,
- 0,
- 0))
- {
- return ERROR;
- }
-
- /* Calculate the region that was invalidated by moving or
- could not be copied, because it was not visible */
- if (RgnUpdate || hrgnUpdate || prcUpdate)
- {
- PREGION RgnOwn, RgnTmp;
-
- pDC = DC_LockDc(hDC);
- if (!pDC)
- {
- return ERROR;
- }
-
- if (hrgnUpdate)
- {
- NT_ASSERT(RgnUpdate == NULL);
- RgnUpdate = REGION_LockRgn(hrgnUpdate);
- if (!RgnUpdate)
- {
- DC_UnlockDc(pDC);
- return ERROR;
- }
- }
-
- /* Begin with the shifted and then clipped scroll rect */
- rcDst = rcScroll;
- RECTL_vOffsetRect(&rcDst, dx, dy);
- RECTL_bIntersectRect(&rcDst, &rcDst, &rcClip);
- if (RgnUpdate)
- {
- RgnOwn = RgnUpdate;
- REGION_SetRectRgn(RgnOwn, rcDst.left, rcDst.top, rcDst.right, rcDst.bottom);
- }
- else
- {
- RgnOwn = IntSysCreateRectpRgnIndirect(&rcDst);
- }
-
- /* Add the source rect */
- RgnTmp = IntSysCreateRectpRgnIndirect(&rcSrc);
- IntGdiCombineRgn(RgnOwn, RgnOwn, RgnTmp, RGN_OR);
-
- /* Substract the part of the dest that was visible in source */
- IntGdiCombineRgn(RgnTmp, RgnTmp, pDC->prgnVis, RGN_AND);
- REGION_bOffsetRgn(RgnTmp, dx, dy);
- Result = IntGdiCombineRgn(RgnOwn, RgnOwn, RgnTmp, RGN_DIFF);
-
- /* DO NOT Unlock DC while messing with prgnVis! */
- DC_UnlockDc(pDC);
-
- REGION_Delete(RgnTmp);
-
- if (prcUpdate)
- {
- REGION_GetRgnBox(RgnOwn, prcUpdate);
- }
-
- if (hrgnUpdate)
- {
- REGION_UnlockRgn(RgnUpdate);
- }
- else if (!RgnUpdate)
- {
- REGION_Delete(RgnOwn);
- }
- }
- else
- Result = NULLREGION;
-
- return Result;
-}
-
-/*
- * NtUserScrollDC
- *
- * Status
- * @implemented
- */
-BOOL APIENTRY
-NtUserScrollDC(
- HDC hDC,
- INT dx,
- INT dy,
- const RECT *prcUnsafeScroll,
- const RECT *prcUnsafeClip,
- HRGN hrgnUpdate,
- LPRECT prcUnsafeUpdate)
-{
- DECLARE_RETURN(DWORD);
- RECTL rcScroll, rcClip, rcUpdate;
- NTSTATUS Status = STATUS_SUCCESS;
- DWORD Result;
-
- TRACE("Enter NtUserScrollDC\n");
- UserEnterExclusive();
-
- _SEH2_TRY
- {
- if (prcUnsafeScroll)
- {
- ProbeForRead(prcUnsafeScroll, sizeof(*prcUnsafeScroll), 1);
- rcScroll = *prcUnsafeScroll;
- }
- if (prcUnsafeClip)
- {
- ProbeForRead(prcUnsafeClip, sizeof(*prcUnsafeClip), 1);
- rcClip = *prcUnsafeClip;
- }
- if (prcUnsafeUpdate)
- {
- ProbeForWrite(prcUnsafeUpdate, sizeof(*prcUnsafeUpdate), 1);
- }
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- RETURN(FALSE);
- }
-
- Result = UserScrollDC( hDC,
- dx,
- dy,
- prcUnsafeScroll? &rcScroll : 0,
- prcUnsafeClip? &rcClip : 0,
- hrgnUpdate,
- NULL,
- prcUnsafeUpdate? &rcUpdate : NULL);
- if(Result == ERROR)
- {
- /* FIXME: Only if hRgnUpdate is invalid we should SetLastError(ERROR_INVALID_HANDLE) */
- RETURN(FALSE);
- }
-
- if (prcUnsafeUpdate)
- {
- _SEH2_TRY
- {
- *prcUnsafeUpdate = rcUpdate;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END
- if (!NT_SUCCESS(Status))
- {
- /* FIXME: SetLastError? */
- /* FIXME: correct? We have already scrolled! */
- RETURN(FALSE);
- }
- }
-
- RETURN(TRUE);
-
-CLEANUP:
- TRACE("Leave NtUserScrollDC, ret=%lu\n",_ret_);
- UserLeave();
- END_CLEANUP;
-}
-
-/*
- * NtUserScrollWindowEx
- *
- * Status
- * @implemented
- */
-
-DWORD APIENTRY
-NtUserScrollWindowEx(
- HWND hWnd,
- INT dx,
- INT dy,
- const RECT *prcUnsafeScroll,
- const RECT *prcUnsafeClip,
- HRGN hrgnUpdate,
- LPRECT prcUnsafeUpdate,
- UINT flags)
-{
- RECTL rcScroll, rcClip, rcCaret, rcUpdate;
- INT Result;
- PWND Window = NULL, CaretWnd;
- HDC hDC;
- PREGION RgnUpdate = NULL, RgnTemp, RgnWinupd = NULL;
- HWND hwndCaret;
- DWORD dcxflags = 0;
- int rdw_flags;
- NTSTATUS Status = STATUS_SUCCESS;
- DECLARE_RETURN(DWORD);
- USER_REFERENCE_ENTRY Ref, CaretRef;
-
- TRACE("Enter NtUserScrollWindowEx\n");
- UserEnterExclusive();
-
- Window = UserGetWindowObject(hWnd);
- if (!Window || !IntIsWindowDrawable(Window))
- {
- Window = NULL; /* prevent deref at cleanup */
- RETURN( ERROR);
- }
- UserRefObjectCo(Window, &Ref);
-
- IntGetClientRect(Window, &rcClip);
-
- _SEH2_TRY
- {
- if (prcUnsafeScroll)
- {
- ProbeForRead(prcUnsafeScroll, sizeof(*prcUnsafeScroll), 1);
- RECTL_bIntersectRect(&rcScroll, &rcClip, prcUnsafeScroll);
- }
- else
- rcScroll = rcClip;
-
- if (prcUnsafeClip)
- {
- ProbeForRead(prcUnsafeClip, sizeof(*prcUnsafeClip), 1);
- RECTL_bIntersectRect(&rcClip, &rcClip, prcUnsafeClip);
- }
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- RETURN(ERROR);
- }
-
- if (rcClip.right <= rcClip.left || rcClip.bottom <= rcClip.top ||
- (dx == 0 && dy == 0))
- {
- RETURN(NULLREGION);
- }
-
- /* We must use a copy of the region, as we can't hold an exclusive lock
- * on it while doing callouts to user-mode */
- RgnUpdate = IntSysCreateRectpRgn(0, 0, 0, 0);
- if(!RgnUpdate)
- {
- EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
- RETURN(ERROR);
- }
-
- if (hrgnUpdate)
- {
- RgnTemp = REGION_LockRgn(hrgnUpdate);
- if (!RgnTemp)
- {
- EngSetLastError(ERROR_INVALID_HANDLE);
- RETURN(ERROR);
- }
- IntGdiCombineRgn(RgnUpdate, RgnTemp, NULL, RGN_COPY);
- REGION_UnlockRgn(RgnTemp);
- }
-
- /* ScrollWindow uses the window DC, ScrollWindowEx doesn't */
- if (flags & SW_SCROLLWNDDCE)
- {
- dcxflags = DCX_USESTYLE;
-
- if (!(Window->pcls->style & (CS_OWNDC|CS_CLASSDC)))
- dcxflags |= DCX_CACHE; // AH??? wine~ If not Powned or with Class go Cheap!
-
- if (flags & SW_SCROLLCHILDREN && Window->style & WS_CLIPCHILDREN)
- dcxflags |= DCX_CACHE|DCX_NOCLIPCHILDREN;
- }
- else
- {
- /* So in this case ScrollWindowEx uses Cache DC. */
- dcxflags = DCX_CACHE|DCX_USESTYLE;
- if (flags & SW_SCROLLCHILDREN) dcxflags |= DCX_NOCLIPCHILDREN;
- }
-
- hDC = UserGetDCEx(Window, 0, dcxflags);
- if (!hDC)
- {
- /* FIXME: SetLastError? */
- RETURN(ERROR);
- }
-
- rdw_flags = (flags & SW_ERASE) && (flags & SW_INVALIDATE) ? RDW_INVALIDATE | RDW_ERASE : RDW_INVALIDATE ;
-
- rcCaret = rcScroll;
- hwndCaret = co_IntFixCaret(Window, &rcCaret, flags);
-
- Result = UserScrollDC( hDC,
- dx,
- dy,
- &rcScroll,
- &rcClip,
- NULL,
- RgnUpdate,
- prcUnsafeUpdate? &rcUpdate : NULL);
-
- UserReleaseDC(Window, hDC, FALSE);
-
- /*
- * Take into account the fact that some damage may have occurred during
- * the scroll. Keep a copy in hrgnWinupd to be added to hrngUpdate at the end.
- */
-
- RgnTemp = IntSysCreateRectpRgn(0, 0, 0, 0);
- if (!RgnTemp)
- {
- EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
- RETURN(ERROR);
- }
-
- if (co_IntGetUpdateRgn(Window, RgnTemp, FALSE) != NULLREGION)
- {
- PREGION RgnClip = IntSysCreateRectpRgnIndirect(&rcClip);
- if (RgnClip)
- {
- if (hrgnUpdate)
- {
- RgnWinupd = IntSysCreateRectpRgn( 0, 0, 0, 0);
- IntGdiCombineRgn( RgnWinupd, RgnTemp, 0, RGN_COPY);
- }
-
- REGION_bOffsetRgn(RgnTemp, dx, dy);
-
- IntGdiCombineRgn(RgnTemp, RgnTemp, RgnClip, RGN_AND);
-
- if (hrgnUpdate)
- IntGdiCombineRgn( RgnWinupd, RgnWinupd, RgnTemp, RGN_OR );
-
- co_UserRedrawWindow(Window, NULL, RgnTemp, rdw_flags );
-
- REGION_Delete(RgnClip);
- }
- }
- REGION_Delete(RgnTemp);
-
- if (flags & SW_SCROLLCHILDREN)
- {
- PWND Child;
- RECTL rcChild;
- POINT ClientOrigin;
- USER_REFERENCE_ENTRY WndRef;
- RECTL rcDummy;
- LPARAM lParam;
-
- IntGetClientOrigin(Window, &ClientOrigin);
-
- for (Child = Window->spwndChild; Child; Child = Child->spwndNext)
- {
- rcChild = Child->rcWindow;
- rcChild.left -= ClientOrigin.x;
- rcChild.top -= ClientOrigin.y;
- rcChild.right -= ClientOrigin.x;
- rcChild.bottom -= ClientOrigin.y;
-
- if (!prcUnsafeScroll || RECTL_bIntersectRect(&rcDummy, &rcChild, &rcScroll))
- {
- UserRefObjectCo(Child, &WndRef);
-
- if (Window->spwndParent == UserGetDesktopWindow()) // Window->spwndParent->fnid == FNID_DESKTOP )
- lParam = MAKELONG(Child->rcClient.left, Child->rcClient.top);
- else
- lParam = MAKELONG(rcChild.left + dx, rcChild.top + dy);
-
- /* wine sends WM_POSCHANGING, WM_POSCHANGED messages */
- /* windows sometimes a WM_MOVE */
- co_IntSendMessage(UserHMGetHandle(Child), WM_MOVE, 0, lParam);
-
- UserDerefObjectCo(Child);
- }
- }
- }
-
- if (flags & (SW_INVALIDATE | SW_ERASE))
- {
- co_UserRedrawWindow( Window,
- NULL,
- RgnUpdate,
- rdw_flags | /* HACK */
- ((flags & SW_SCROLLCHILDREN) ? RDW_ALLCHILDREN : RDW_NOCHILDREN) );
- }
-
- if (hwndCaret && (CaretWnd = UserGetWindowObject(hwndCaret)))
- {
- UserRefObjectCo(CaretWnd, &CaretRef);
-
- co_IntSetCaretPos(rcCaret.left + dx, rcCaret.top + dy);
- co_UserShowCaret(CaretWnd);
-
- UserDerefObjectCo(CaretWnd);
- }
-
- if (prcUnsafeUpdate)
- {
- _SEH2_TRY
- {
- /* Probe here, to not fail on invalid pointer before scrolling */
- ProbeForWrite(prcUnsafeUpdate, sizeof(*prcUnsafeUpdate), 1);
- *prcUnsafeUpdate = rcUpdate;
- }
- _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
- {
- Status = _SEH2_GetExceptionCode();
- }
- _SEH2_END
-
- if (!NT_SUCCESS(Status))
- {
- SetLastNtError(Status);
- RETURN(ERROR);
- }
- }
-
- RETURN(Result);
-
-CLEANUP:
- if (hrgnUpdate && (_ret_ != ERROR))
- {
- /* Give everything back to the caller */
- RgnTemp = REGION_LockRgn(hrgnUpdate);
- /* The handle should still be valid */
- ASSERT(RgnTemp);
- if (RgnWinupd)
- IntGdiCombineRgn(RgnTemp, RgnUpdate, RgnWinupd, RGN_OR);
- else
- IntGdiCombineRgn(RgnTemp, RgnUpdate, NULL, RGN_COPY);
- REGION_UnlockRgn(RgnTemp);
- }
-
- if (RgnWinupd)
- {
- REGION_Delete(RgnWinupd);
- }
-
- if (RgnUpdate)
- {
- REGION_Delete(RgnUpdate);
- }
-
- if (Window)
- UserDerefObjectCo(Window);
-
- TRACE("Leave NtUserScrollWindowEx, ret=%lu\n",_ret_);
- UserLeave();
- END_CLEANUP;
-}
-
projects / reactos.git / blobdiff