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[0.4.9][COMCTL32][WIN32SS] Fix multiple scrollbar redraw issues

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This fixes:
- CORE-15911 "Scrollbars do not disappear when Maximizing and not needed"
- CORE-10617 "ListView corrupt scrollbar upon resizing the column-header"

and fixes regressions:
- CORE-15429 "Uninitialized scrollbars in 'My Computer' permanently drawn"
- CORE-16466 "Uninitialized scrollbars in 'My Computer' do still flash up for a fraction of a second before getting overpainted"
both unhidden by SVN r75735 == git 0.4.7-dev-168-g 6af37fd54e

by porting back the commits:
0.4.14-dev-312-g b931f643e3
0.4.13-dev-535-g 1158c24194
This commit is contained in:
Joachim Henze 2020-12-20 06:42:31 +01:00
parent c0995eebd5
commit 6cfc934c20
2 changed files with 31 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
dll/win32/comctl32/listview.c
View file

@ -2076,6 +2076,9 @@ static INT LISTVIEW_UpdateHScroll(LISTVIEW_INFO *infoPtr)
horzInfo.fMask = SIF_RANGE | SIF_PAGE;
horzInfo.nMax = max(horzInfo.nMax - 1, 0);
#ifdef __REACTOS__ /* CORE-16466 part 1 of 4 */
horzInfo.nMax = (horzInfo.nPage == 0 ? 0 : horzInfo.nMax);
#endif
dx = GetScrollPos(infoPtr->hwndSelf, SB_HORZ);
dx -= SetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &horzInfo, TRUE);
TRACE("horzInfo=%s\n", debugscrollinfo(&horzInfo));
@ -2099,10 +2102,27 @@ static INT LISTVIEW_UpdateVScroll(LISTVIEW_INFO *infoPtr)
ZeroMemory(&vertInfo, sizeof(SCROLLINFO));
vertInfo.cbSize = sizeof(SCROLLINFO);
#ifdef __REACTOS__ /* CORE-16466 part 2 of 4 */
vertInfo.nPage = max((infoPtr->rcList.bottom - infoPtr->rcList.top), 0);
#else
vertInfo.nPage = infoPtr->rcList.bottom - infoPtr->rcList.top;
#endif
if (infoPtr->uView == LV_VIEW_DETAILS)
{
#ifdef __REACTOS__ /* CORE-16466 part 3 of 4 */
if (vertInfo.nPage != 0)
{
vertInfo.nMax = infoPtr->nItemCount;
/* scroll by at least one page */
if (vertInfo.nPage < infoPtr->nItemHeight)
vertInfo.nPage = infoPtr->nItemHeight;
if (infoPtr->nItemHeight > 0)
vertInfo.nPage /= infoPtr->nItemHeight;
}
#else
vertInfo.nMax = infoPtr->nItemCount;
/* scroll by at least one page */
@ -2111,6 +2131,7 @@ static INT LISTVIEW_UpdateVScroll(LISTVIEW_INFO *infoPtr)
if (infoPtr->nItemHeight > 0)
vertInfo.nPage /= infoPtr->nItemHeight;
#endif
}
else if (infoPtr->uView != LV_VIEW_LIST) /* LV_VIEW_ICON, or LV_VIEW_SMALLICON */
{
@ -2121,6 +2142,9 @@ static INT LISTVIEW_UpdateVScroll(LISTVIEW_INFO *infoPtr)
vertInfo.fMask = SIF_RANGE | SIF_PAGE;
vertInfo.nMax = max(vertInfo.nMax - 1, 0);
#ifdef __REACTOS__ /* CORE-16466 part 4 of 4 */
vertInfo.nMax = (vertInfo.nPage == 0 ? 0 : vertInfo.nMax);
#endif
dy = GetScrollPos(infoPtr->hwndSelf, SB_VERT);
dy -= SetScrollInfo(infoPtr->hwndSelf, SB_VERT, &vertInfo, TRUE);
TRACE("vertInfo=%s\n", debugscrollinfo(&vertInfo));

10
win32ss/user/ntuser/winpos.c
View file

@ -1780,7 +1780,7 @@ co_WinPosSetWindowPos(
}
/* Calculate the non client area for resizes, as this is used in the copy region */
if (!(WinPos.flags & SWP_NOSIZE))
if ((WinPos.flags & (SWP_NOSIZE | SWP_FRAMECHANGED)) != SWP_NOSIZE)
{
VisBeforeJustClient = VIS_ComputeVisibleRegion(Window, TRUE, FALSE,
(Window->style & WS_CLIPSIBLINGS) ? TRUE : FALSE);
@ -1918,12 +1918,16 @@ co_WinPosSetWindowPos(
*/
CopyRgn = IntSysCreateRectpRgn(0, 0, 0, 0);
if (WinPos.flags & SWP_NOSIZE)
if ((WinPos.flags & SWP_NOSIZE) && (WinPos.flags & SWP_NOCLIENTSIZE))
RgnType = IntGdiCombineRgn(CopyRgn, VisAfter, VisBefore, RGN_AND);
else if (VisBeforeJustClient != NULL)
{
RgnType = IntGdiCombineRgn(CopyRgn, VisAfter, VisBeforeJustClient, RGN_AND);
REGION_Delete(VisBeforeJustClient);
}
if (VisBeforeJustClient != NULL)
{
REGION_Delete(VisBeforeJustClient);
}
/* Now use in copying bits which are in the update region. */