4225IsPixelBased = mustDisableVirtualization || (scrollUnit == ScrollUnit.Pixel);

138double newOffset = (IsPixelBased || isHorizontal) 158double newOffset = (IsPixelBased || isHorizontal) 178double newOffset = (IsPixelBased || !isHorizontal) 198double newOffset = (IsPixelBased || !isHorizontal) 218double newOffset = (IsPixelBased || isHorizontal) 238double newOffset = (IsPixelBased || isHorizontal) 258double newOffset = (IsPixelBased || !isHorizontal) 278double newOffset = (IsPixelBased || !isHorizontal) 301double newOffset = (IsPixelBased || isHorizontal) 329double newOffset = (IsPixelBased || isHorizontal) 354double newOffset = (IsPixelBased || !isHorizontal) 374double newOffset = (IsPixelBased || !isHorizontal) 401Debug.Assert(!IsPixelBased && IsScrolling && 521if (!IsPixelBased) 539if (!setAnchorInformation && !IsPixelBased) 563else if (!IsPixelBased) 649if (!IsPixelBased) 667if (!setAnchorInformation && !IsPixelBased) 691else if (!IsPixelBased) 897if (!IsPixelBased) 1141Debug.Assert(!IsPixelBased || !findTopContainer, "find 'top' container only makes sense when item-scrolling"); 1207if (!IsPixelBased) 1282if (IsPixelBased) 1323else if (!IsPixelBased) 1517if (IsPixelBased) 1565else if (!IsPixelBased) 2241IsPixelBased || isVSP45Compat, 2795!IsPixelBased && 2987if (!IsPixelBased && 3354IsPixelBased || IsVSP45Compat, 3787isVSP45Compat || IsPixelBased, 3896if (IsPixelBased) 4224bool oldIsPixelBased = IsPixelBased; 4228if (!HasMeasured || oldIsPixelBased != IsPixelBased) 4321if (IsPixelBased) 4736if (IsPixelBased) 4746if (IsPixelBased) 4852if (IsPixelBased) 4862if (IsPixelBased) 4969if (!IsPixelBased && isHorizontal && DoubleUtil.IsZero(viewport.Width) && DoubleUtil.AreClose(viewport.X, extent.Width)) 4978if (!IsPixelBased && !isHorizontal && DoubleUtil.IsZero(viewport.Height) && DoubleUtil.AreClose(viewport.Y, extent.Height)) 5049viewport.X -= IsPixelBased ? pixelSize.Width : logicalSize.Width; 5057if (IsPixelBased && DoubleUtil.GreaterThan(pixelSize.Width, parentViewport.X)) 5148viewport.Y -= IsPixelBased ? pixelSize.Height : logicalSize.Height; 5156if (IsPixelBased && DoubleUtil.GreaterThan(pixelSize.Height, parentViewport.Y)) 5270viewport.X -= IsPixelBased ? inset.Left : isHeaderBeforeItems ? 1 : 0; 5274viewport.Y -= IsPixelBased ? inset.Top : isHeaderBeforeItems ? 1 : 0; 5291if (IsPixelBased && DoubleUtil.GreaterThan(0, viewport.X)) 5394if (IsPixelBased && DoubleUtil.GreaterThan(0, viewport.Y)) 5776if (!IsPixelBased) 5804if (IsPixelBased) 5900if (!(IsPixelBased || IsVSP45Compat)) 6045containerSize.Height = IsPixelBased ? DesiredSize.Height : 1; 6050containerSize.Width = IsPixelBased ? DesiredSize.Width : 1; 6075containerSize.Height = IsPixelBased ? DesiredSize.Height : 1; 6080containerSize.Width = IsPixelBased ? DesiredSize.Width : 1; 6113if (IsPixelBased) 6152containerSize.Height = IsPixelBased ? pixelHeight : 1; 6162containerSize.Width = IsPixelBased ? pixelWidth : 1; 6266bool ignoreContainerPixelSize = IsPixelBased || (IsScrolling && !hasVirtualizingChildren); 6290if (IsPixelBased) 6699childViewport.X = (IsPixelBased ? stackPixelSizeInCacheBeforeViewport.Width : stackLogicalSizeInCacheBeforeViewport.Width) + containerSize.Width; 6705(IsPixelBased ? stackPixelSizeInViewport.Width + stackPixelSizeInCacheAfterViewport.Width : 6744childViewport.Y = (IsPixelBased ? stackPixelSizeInCacheBeforeViewport.Height : stackLogicalSizeInCacheBeforeViewport.Height) + containerSize.Height; 6750(IsPixelBased ? stackPixelSizeInViewport.Height + stackPixelSizeInCacheAfterViewport.Height : 6895if (IsPixelBased && 7117adjustedChildViewport.X -= IsPixelBased ? frontPixelSize.Width + itemDesiredSizes.PixelSize.Width 7123adjustedChildViewport.Y -= IsPixelBased ? frontPixelSize.Height + itemDesiredSizes.PixelSize.Height 7196if (IsPixelBased) 7288if (IsPixelBased) 7468if (IsPixelBased) 7481if (IsPixelBased) 7553if (IsPixelBased) 7636if (IsPixelBased) 7652if (IsPixelBased) 7668&& (IsPixelBased || DoubleUtil.AreClose(childPixelSize.Width, uniformOrAverageContainerPixelSize)); 7673&& (IsPixelBased || DoubleUtil.AreClose(childPixelSize.Height, uniformOrAverageContainerPixelSize)); 7686if (IsPixelBased) 7733if (IsPixelBased) 7789if (IsPixelBased) 7924IsPixelBased || IsVSP45Compat, 8001uniformOrAverageContainerSize = IsPixelBased ? uniformOrAverageContainerPixelSize : 1.0; 8033if (IsPixelBased || IsVSP45Compat) 8353IsPixelBased ? childPixelSize : childLogicalSize, 8366IsPixelBased ? childPixelSize : childLogicalSize, 8404if (!IsPixelBased) 8428if (IsPixelBased) 8461if (!IsPixelBased && virtualizingChild != null && IsVSP45Compat) 8493if (!IsPixelBased && virtualizingChild != null && IsVSP45Compat) 8591if (IsPixelBased) 8644if (IsPixelBased) 9596if (IsPixelBased) 9697stackPixelSize.Width = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.X, 0) ? 9702stackPixelSize.Height = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.Y, 0) ? 9707if (!IsPixelBased) 9934if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.X)) 9949if (!IsPixelBased) 10051if (IsPixelBased) 10151if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.Y)) 10166if (!IsPixelBased) 10268if (IsPixelBased) 10445if (IsPixelBased) 10546stackPixelSize.Width = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.X, 0) ? 10551stackPixelSize.Height = IsPixelBased || DoubleUtil.AreClose(computedViewportOffset.Y, 0) ? 10556if (!IsPixelBased) 10635if (!IsPixelBased) 10722if (IsPixelBased) 10750if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.X)) 10766if (!IsPixelBased) 10853if (IsPixelBased) 10881if (!IsPixelBased && lastPageSafeOffset.HasValue && !DoubleUtil.AreClose((double)lastPageSafeOffset, computedViewportOffset.Y)) 11042if (IsPixelBased)