4169IsPixelBased = mustDisableVirtualization || (scrollUnit == ScrollUnit.Pixel);

145double newOffset = (IsPixelBased || isHorizontal) 165double newOffset = (IsPixelBased || isHorizontal) 185double newOffset = (IsPixelBased || !isHorizontal) 205double newOffset = (IsPixelBased || !isHorizontal) 225double newOffset = (IsPixelBased || isHorizontal) 245double newOffset = (IsPixelBased || isHorizontal) 265double newOffset = (IsPixelBased || !isHorizontal) 285double newOffset = (IsPixelBased || !isHorizontal) 308double newOffset = (IsPixelBased || isHorizontal) 336double newOffset = (IsPixelBased || isHorizontal) 361double newOffset = (IsPixelBased || !isHorizontal) 381double newOffset = (IsPixelBased || !isHorizontal) 408Debug.Assert(!IsPixelBased && IsScrolling && 526if (!IsPixelBased) 544if (!setAnchorInformation && !IsPixelBased) 568else if (!IsPixelBased) 652if (!IsPixelBased) 670if (!setAnchorInformation && !IsPixelBased) 694else if (!IsPixelBased) 900if (!IsPixelBased) 1116Debug.Assert(!IsPixelBased || !findTopContainer, "find 'top' container only makes sense when item-scrolling"); 1179if (!IsPixelBased) 1254if (IsPixelBased) 1280else if (!IsPixelBased) 1478if (IsPixelBased) 1526else if (!IsPixelBased) 2208IsPixelBased || isVSP45Compat, 2760!IsPixelBased && 2952if (!IsPixelBased && 3313IsPixelBased || IsVSP45Compat, 3741isVSP45Compat || IsPixelBased, 3844if (IsPixelBased) 4168bool oldIsPixelBased = IsPixelBased; 4172if (!HasMeasured || oldIsPixelBased != IsPixelBased) 4264if (IsPixelBased) 4668if (IsPixelBased) 4678if (IsPixelBased) 4774if (IsPixelBased) 4784if (IsPixelBased) 4881if (!IsPixelBased && isHorizontal && DoubleUtil.IsZero(viewport.Width) && DoubleUtil.AreClose(viewport.X, extent.Width)) 4890if (!IsPixelBased && !isHorizontal && DoubleUtil.IsZero(viewport.Height) && DoubleUtil.AreClose(viewport.Y, extent.Height)) 4961viewport.X -= IsPixelBased ? pixelSize.Width : logicalSize.Width; 4969if (IsPixelBased && DoubleUtil.GreaterThan(pixelSize.Width, parentViewport.X)) 5060viewport.Y -= IsPixelBased ? pixelSize.Height : logicalSize.Height; 5068if (IsPixelBased && DoubleUtil.GreaterThan(pixelSize.Height, parentViewport.Y)) 5182viewport.X -= IsPixelBased ? inset.Left : isHeaderBeforeItems ? 1 : 0; 5186viewport.Y -= IsPixelBased ? inset.Top : isHeaderBeforeItems ? 1 : 0; 5203if (IsPixelBased && DoubleUtil.GreaterThan(0, viewport.X)) 5306if (IsPixelBased && DoubleUtil.GreaterThan(0, viewport.Y)) 5667if (!IsPixelBased) 5695if (IsPixelBased) 5791if (!(IsPixelBased || IsVSP45Compat)) 5936containerSize.Height = IsPixelBased ? DesiredSize.Height : 1; 5941containerSize.Width = IsPixelBased ? DesiredSize.Width : 1; 5966containerSize.Height = IsPixelBased ? DesiredSize.Height : 1; 5971containerSize.Width = IsPixelBased ? DesiredSize.Width : 1; 6004if (IsPixelBased) 6043containerSize.Height = IsPixelBased ? pixelHeight : 1; 6053containerSize.Width = IsPixelBased ? pixelWidth : 1; 6157bool ignoreContainerPixelSize = IsPixelBased || (IsScrolling && !hasVirtualizingChildren); 6181if (IsPixelBased) 6590childViewport.X = (IsPixelBased ? stackPixelSizeInCacheBeforeViewport.Width : stackLogicalSizeInCacheBeforeViewport.Width) + containerSize.Width; 6596(IsPixelBased ? stackPixelSizeInViewport.Width + stackPixelSizeInCacheAfterViewport.Width : 6635childViewport.Y = (IsPixelBased ? stackPixelSizeInCacheBeforeViewport.Height : stackLogicalSizeInCacheBeforeViewport.Height) + containerSize.Height; 6641(IsPixelBased ? stackPixelSizeInViewport.Height + stackPixelSizeInCacheAfterViewport.Height : 6782if (IsPixelBased && 7004adjustedChildViewport.X -= IsPixelBased ? frontPixelSize.Width + itemDesiredSizes.PixelSize.Width 7010adjustedChildViewport.Y -= IsPixelBased ? frontPixelSize.Height + itemDesiredSizes.PixelSize.Height 7083if (IsPixelBased) 7175if (IsPixelBased) 7355if (IsPixelBased) 7368if (IsPixelBased) 7440if (IsPixelBased) 7523if (IsPixelBased) 7539if (IsPixelBased) 7555&& (IsPixelBased || DoubleUtil.AreClose(childPixelSize.Width, uniformOrAverageContainerPixelSize)); 7560&& (IsPixelBased || DoubleUtil.AreClose(childPixelSize.Height, uniformOrAverageContainerPixelSize)); 7573if (IsPixelBased) 7620if (IsPixelBased) 7662if (IsPixelBased) 7797IsPixelBased || IsVSP45Compat, 7874uniformOrAverageContainerSize = IsPixelBased ? uniformOrAverageContainerPixelSize : 1.0; 7906if (IsPixelBased || IsVSP45Compat) 8222IsPixelBased ? childPixelSize : childLogicalSize, 8235IsPixelBased ? childPixelSize : childLogicalSize, 8273if (!IsPixelBased) 8297if (IsPixelBased) 8330if (!IsPixelBased && virtualizingChild != null && IsVSP45Compat) 8362if (!IsPixelBased && virtualizingChild != null && IsVSP45Compat) 8460if (IsPixelBased) 8513if (IsPixelBased) 9471if (IsPixelBased) 9572stackPixelSize.Width = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.X, 0) ? 9577stackPixelSize.Height = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.Y, 0) ? 9812if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.X)) 9827if (!IsPixelBased) 9929if (IsPixelBased) 10029if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.Y)) 10044if (!IsPixelBased) 10146if (IsPixelBased) 10323if (IsPixelBased) 10424stackPixelSize.Width = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.X, 0) ? 10429stackPixelSize.Height = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.Y, 0) ? 10513if (!IsPixelBased) 10600if (IsPixelBased) 10628if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.X)) 10644if (!IsPixelBased) 10731if (IsPixelBased) 10759if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.Y)) 10923if (IsPixelBased)