Rewrite the UpdateScroll function: simpler, faster.
Add debugging helper for SCROLLINFO. Fix potential bug in debugging helpers.
This commit is contained in:
Dimitrie O. Paun
Alexandre Julliard
parent
9faec8a877
commit
c4e45d7f94
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@ -549,6 +549,38 @@ static inline char* debugrect(const RECT* rect)
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} else return "(null)";
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}
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static char * debugscrollinfo(const SCROLLINFO *pScrollInfo)
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{
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char* buf = debug_getbuf(), *text = buf;
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int len, size = DEBUG_BUFFER_SIZE;
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if (pScrollInfo == NULL) return "(null)";
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len = snprintf(buf, size, "{cbSize=%d, ", pScrollInfo->cbSize);
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if (len == -1) goto end; buf += len; size -= len;
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if (pScrollInfo->fMask & SIF_RANGE)
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len = snprintf(buf, size, "nMin=%d, nMax=%d, ", pScrollInfo->nMin, pScrollInfo->nMax);
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else len = 0;
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if (len == -1) goto end; buf += len; size -= len;
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if (pScrollInfo->fMask & SIF_PAGE)
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len = snprintf(buf, size, "nPage=%u, ", pScrollInfo->nPage);
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else len = 0;
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if (len == -1) goto end; buf += len; size -= len;
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if (pScrollInfo->fMask & SIF_POS)
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len = snprintf(buf, size, "nPos=%d, ", pScrollInfo->nPos);
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else len = 0;
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if (len == -1) goto end; buf += len; size -= len;
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if (pScrollInfo->fMask & SIF_TRACKPOS)
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len = snprintf(buf, size, "nTrackPos=%d, ", pScrollInfo->nTrackPos);
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else len = 0;
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if (len == -1) goto end; buf += len; size -= len;
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goto undo;
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end:
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buf = text + strlen(text);
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undo:
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if (buf - text > 2) { buf[-2] = '}'; buf[-1] = 0; }
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return text;
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}
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static char* debugnmlistview(LPNMLISTVIEW plvnm)
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{
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if (plvnm)
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@ -594,7 +626,7 @@ static char* debuglvitem_t(LPLVITEMW lpLVItem, BOOL isW)
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end:
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buf = text + strlen(text);
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undo:
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if (buf - text > 2) buf[-2] = '}'; buf[-1] = 0;
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if (buf - text > 2) { buf[-2] = '}'; buf[-1] = 0; }
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return text;
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}
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@ -634,7 +666,7 @@ static char* debuglvcolumn_t(LPLVCOLUMNW lpColumn, BOOL isW)
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end:
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buf = text + strlen(text);
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undo:
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if (buf - text > 2) buf[-2] = '}'; buf[-1] = 0;
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if (buf - text > 2) { buf[-2] = '}'; buf[-1] = 0; }
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return text;
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}
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@ -1424,102 +1456,60 @@ static void LISTVIEW_UpdateHeaderSize(LISTVIEW_INFO *infoPtr, INT nNewScrollPos)
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static void LISTVIEW_UpdateScroll(LISTVIEW_INFO *infoPtr)
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{
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UINT uView = infoPtr->dwStyle & LVS_TYPEMASK;
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INT nListHeight = infoPtr->rcList.bottom - infoPtr->rcList.top;
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INT nListWidth = infoPtr->rcList.right - infoPtr->rcList.left;
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SCROLLINFO scrollInfo;
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SCROLLINFO horzInfo, vertInfo;
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if (infoPtr->dwStyle & LVS_NOSCROLL) return;
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/*if (!is_redrawing(infoPtr)) return;*/
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scrollInfo.cbSize = sizeof(SCROLLINFO);
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ZeroMemory(&horzInfo, sizeof(SCROLLINFO));
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horzInfo.cbSize = sizeof(SCROLLINFO);
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horzInfo.nPage = infoPtr->rcList.right - infoPtr->rcList.left;
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ZeroMemory(&vertInfo, sizeof(SCROLLINFO));
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vertInfo.cbSize = sizeof(SCROLLINFO);
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vertInfo.nPage = infoPtr->rcList.bottom - infoPtr->rcList.top;
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/* for now, we'll set info.nMax to the _count_, and adjust it later */
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if (uView == LVS_LIST)
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{
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/* update horizontal scrollbar */
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INT nCountPerColumn = LISTVIEW_GetCountPerColumn(infoPtr);
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INT nCountPerRow = LISTVIEW_GetCountPerRow(infoPtr);
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TRACE("items=%d, perColumn=%d, perRow=%d\n",
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infoPtr->nItemCount, nCountPerColumn, nCountPerRow);
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scrollInfo.nMin = 0;
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scrollInfo.nMax = infoPtr->nItemCount / nCountPerColumn;
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if((infoPtr->nItemCount % nCountPerColumn) == 0)
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scrollInfo.nMax--;
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if (scrollInfo.nMax < 0) scrollInfo.nMax = 0;
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scrollInfo.nPos = ListView_GetTopIndex(infoPtr->hwndSelf) / nCountPerColumn;
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scrollInfo.nPage = nCountPerRow;
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scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_PAGE;
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SetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo, TRUE);
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ShowScrollBar(infoPtr->hwndSelf, SB_VERT, FALSE);
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INT nPerCol = LISTVIEW_GetCountPerColumn(infoPtr);
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horzInfo.nMax = (infoPtr->nItemCount + nPerCol - 1) / nPerCol;
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horzInfo.nPage /= infoPtr->nItemWidth;
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}
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else if (uView == LVS_REPORT)
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{
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BOOL test;
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/* update vertical scrollbar */
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scrollInfo.nMin = 0;
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scrollInfo.nMax = infoPtr->nItemCount - 1;
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scrollInfo.nPos = ListView_GetTopIndex(infoPtr->hwndSelf);
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scrollInfo.nPage = LISTVIEW_GetCountPerColumn(infoPtr);
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scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_PAGE;
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test = (scrollInfo.nMin >= scrollInfo.nMax - max((INT)scrollInfo.nPage - 1, 0));
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TRACE("LVS_REPORT Vert. nMax=%d, nPage=%d, test=%d\n",
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scrollInfo.nMax, scrollInfo.nPage, test);
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SetScrollInfo(infoPtr->hwndSelf, SB_VERT, &scrollInfo, TRUE);
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ShowScrollBar(infoPtr->hwndSelf, SB_VERT, (test) ? FALSE : TRUE);
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/* update horizontal scrollbar */
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scrollInfo.fMask = SIF_POS;
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if (!GetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo))
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scrollInfo.nPos = 0;
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scrollInfo.nMin = 0;
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scrollInfo.nMax = max(infoPtr->nItemWidth, 0)-1;
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scrollInfo.nPage = nListWidth;
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scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_PAGE ;
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test = (scrollInfo.nMin >= scrollInfo.nMax - max((INT)scrollInfo.nPage - 1, 0));
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TRACE("LVS_REPORT Horz. nMax=%d, nPage=%d, test=%d\n",
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scrollInfo.nMax, scrollInfo.nPage, test);
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SetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo, TRUE);
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ShowScrollBar(infoPtr->hwndSelf, SB_HORZ, (test) ? FALSE : TRUE);
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/* Update the Header Control */
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scrollInfo.fMask = SIF_POS;
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GetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo);
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LISTVIEW_UpdateHeaderSize(infoPtr, scrollInfo.nPos);
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horzInfo.nMax = infoPtr->nItemWidth;
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vertInfo.nMax = infoPtr->nItemCount;
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vertInfo.nPage /= infoPtr->nItemHeight;
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}
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else
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else /* LVS_ICON, or LVS_SMALLICON */
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{
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RECT rcView;
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if (LISTVIEW_GetViewRect(infoPtr, &rcView))
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{
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TRACE("rcView=%s, rcList=%s\n", debugrect(&rcView), debugrect(&infoPtr->rcList));
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/* Update Horizontal Scrollbar */
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scrollInfo.fMask = SIF_POS;
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if (!GetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo))
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scrollInfo.nPos = 0;
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scrollInfo.nMin = 0;
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scrollInfo.nMax = max(rcView.right - rcView.left - 1, 0);
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scrollInfo.nPage = nListWidth;
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scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_PAGE;
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TRACE("LVS_ICON/SMALLICON Horz.\n");
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SetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &scrollInfo, TRUE);
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/* Update Vertical Scrollbar */
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scrollInfo.fMask = SIF_POS;
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if (!GetScrollInfo(infoPtr->hwndSelf, SB_VERT, &scrollInfo))
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scrollInfo.nPos = 0;
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scrollInfo.nMin = 0;
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scrollInfo.nMax = max(rcView.bottom - rcView.top - 1, 0);
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scrollInfo.nPage = nListHeight;
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scrollInfo.fMask = SIF_RANGE | SIF_POS | SIF_PAGE;
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TRACE("LVS_ICON/SMALLICON Vert.\n");
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SetScrollInfo(infoPtr->hwndSelf, SB_VERT, &scrollInfo, TRUE);
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horzInfo.nMax = rcView.right - rcView.left;
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vertInfo.nMax = rcView.bottom - rcView.top;
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}
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}
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horzInfo.fMask = SIF_RANGE | SIF_PAGE;
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horzInfo.nMax = max(horzInfo.nMax - 1, 0);
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SetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &horzInfo, TRUE);
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TRACE("horzInfo=%s\n", debugscrollinfo(&horzInfo));
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vertInfo.fMask = SIF_RANGE | SIF_PAGE;
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vertInfo.nMax = max(vertInfo.nMax - 1, 0);
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SetScrollInfo(infoPtr->hwndSelf, SB_VERT, &vertInfo, TRUE);
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TRACE("vertInfo=%s\n", debugscrollinfo(&vertInfo));
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/* Update the Header Control */
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if (uView == LVS_REPORT)
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{
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horzInfo.fMask = SIF_POS;
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GetScrollInfo(infoPtr->hwndSelf, SB_HORZ, &horzInfo);
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LISTVIEW_UpdateHeaderSize(infoPtr, horzInfo.nPos);
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}
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}
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