4251IsPixelBased = mustDisableVirtualization || (scrollUnit == ScrollUnit.Pixel);

144double newOffset = (IsPixelBased || isHorizontal) 164double newOffset = (IsPixelBased || isHorizontal) 184double newOffset = (IsPixelBased || !isHorizontal) 204double newOffset = (IsPixelBased || !isHorizontal) 224double newOffset = (IsPixelBased || isHorizontal) 244double newOffset = (IsPixelBased || isHorizontal) 264double newOffset = (IsPixelBased || !isHorizontal) 284double newOffset = (IsPixelBased || !isHorizontal) 307double newOffset = (IsPixelBased || isHorizontal) 335double newOffset = (IsPixelBased || isHorizontal) 360double newOffset = (IsPixelBased || !isHorizontal) 380double newOffset = (IsPixelBased || !isHorizontal) 407Debug.Assert(!IsPixelBased && IsScrolling && 527if (!IsPixelBased) 545if (!setAnchorInformation && !IsPixelBased) 569else if (!IsPixelBased) 655if (!IsPixelBased) 673if (!setAnchorInformation && !IsPixelBased) 697else if (!IsPixelBased) 903if (!IsPixelBased) 1147Debug.Assert(!IsPixelBased || !findTopContainer, "find 'top' container only makes sense when item-scrolling"); 1213if (!IsPixelBased) 1288if (IsPixelBased) 1329else if (!IsPixelBased) 1527if (IsPixelBased) 1575else if (!IsPixelBased) 2258IsPixelBased || isVSP45Compat, 2812!IsPixelBased && 3004if (!IsPixelBased && 3374IsPixelBased || IsVSP45Compat, 3807isVSP45Compat || IsPixelBased, 3916if (IsPixelBased) 4250bool oldIsPixelBased = IsPixelBased; 4254if (!HasMeasured || oldIsPixelBased != IsPixelBased) 4347if (IsPixelBased) 4765if (IsPixelBased) 4775if (IsPixelBased) 4881if (IsPixelBased) 4891if (IsPixelBased) 4998if (!IsPixelBased && isHorizontal && DoubleUtil.IsZero(viewport.Width) && DoubleUtil.AreClose(viewport.X, extent.Width)) 5007if (!IsPixelBased && !isHorizontal && DoubleUtil.IsZero(viewport.Height) && DoubleUtil.AreClose(viewport.Y, extent.Height)) 5078viewport.X -= IsPixelBased ? pixelSize.Width : logicalSize.Width; 5086if (IsPixelBased && DoubleUtil.GreaterThan(pixelSize.Width, parentViewport.X)) 5177viewport.Y -= IsPixelBased ? pixelSize.Height : logicalSize.Height; 5185if (IsPixelBased && DoubleUtil.GreaterThan(pixelSize.Height, parentViewport.Y)) 5299viewport.X -= IsPixelBased ? inset.Left : isHeaderBeforeItems ? 1 : 0; 5303viewport.Y -= IsPixelBased ? inset.Top : isHeaderBeforeItems ? 1 : 0; 5320if (IsPixelBased && DoubleUtil.GreaterThan(0, viewport.X)) 5423if (IsPixelBased && DoubleUtil.GreaterThan(0, viewport.Y)) 5805if (!IsPixelBased) 5833if (IsPixelBased) 5929if (!(IsPixelBased || IsVSP45Compat)) 6074containerSize.Height = IsPixelBased ? DesiredSize.Height : 1; 6079containerSize.Width = IsPixelBased ? DesiredSize.Width : 1; 6104containerSize.Height = IsPixelBased ? DesiredSize.Height : 1; 6109containerSize.Width = IsPixelBased ? DesiredSize.Width : 1; 6142if (IsPixelBased) 6181containerSize.Height = IsPixelBased ? pixelHeight : 1; 6191containerSize.Width = IsPixelBased ? pixelWidth : 1; 6295bool ignoreContainerPixelSize = IsPixelBased || (IsScrolling && !hasVirtualizingChildren); 6319if (IsPixelBased) 6728childViewport.X = (IsPixelBased ? stackPixelSizeInCacheBeforeViewport.Width : stackLogicalSizeInCacheBeforeViewport.Width) + containerSize.Width; 6734(IsPixelBased ? stackPixelSizeInViewport.Width + stackPixelSizeInCacheAfterViewport.Width : 6773childViewport.Y = (IsPixelBased ? stackPixelSizeInCacheBeforeViewport.Height : stackLogicalSizeInCacheBeforeViewport.Height) + containerSize.Height; 6779(IsPixelBased ? stackPixelSizeInViewport.Height + stackPixelSizeInCacheAfterViewport.Height : 6922if (IsPixelBased && 7144adjustedChildViewport.X -= IsPixelBased ? frontPixelSize.Width + itemDesiredSizes.PixelSize.Width 7150adjustedChildViewport.Y -= IsPixelBased ? frontPixelSize.Height + itemDesiredSizes.PixelSize.Height 7223if (IsPixelBased) 7315if (IsPixelBased) 7495if (IsPixelBased) 7508if (IsPixelBased) 7580if (IsPixelBased) 7663if (IsPixelBased) 7679if (IsPixelBased) 7695&& (IsPixelBased || DoubleUtil.AreClose(childPixelSize.Width, uniformOrAverageContainerPixelSize)); 7700&& (IsPixelBased || DoubleUtil.AreClose(childPixelSize.Height, uniformOrAverageContainerPixelSize)); 7713if (IsPixelBased) 7760if (IsPixelBased) 7816if (IsPixelBased) 7951IsPixelBased || IsVSP45Compat, 8028uniformOrAverageContainerSize = IsPixelBased ? uniformOrAverageContainerPixelSize : 1.0; 8060if (IsPixelBased || IsVSP45Compat) 8380IsPixelBased ? childPixelSize : childLogicalSize, 8393IsPixelBased ? childPixelSize : childLogicalSize, 8431if (!IsPixelBased) 8455if (IsPixelBased) 8488if (!IsPixelBased && virtualizingChild != null && IsVSP45Compat) 8520if (!IsPixelBased && virtualizingChild != null && IsVSP45Compat) 8618if (IsPixelBased) 8671if (IsPixelBased) 9621if (IsPixelBased) 9722stackPixelSize.Width = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.X, 0) ? 9727stackPixelSize.Height = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.Y, 0) ? 9732if (!IsPixelBased) 9962if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.X)) 9977if (!IsPixelBased) 10079if (IsPixelBased) 10179if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.Y)) 10194if (!IsPixelBased) 10296if (IsPixelBased) 10473if (IsPixelBased) 10574stackPixelSize.Width = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.X, 0) ? 10579stackPixelSize.Height = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.Y, 0) ? 10584if (!IsPixelBased) 10663if (!IsPixelBased) 10750if (IsPixelBased) 10778if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.X)) 10794if (!IsPixelBased) 10881if (IsPixelBased) 10909if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.Y)) 11070if (IsPixelBased)