/// <summary>Returns a value that indicates whether the specified object is equal to this <see cref="T:System.Windows.Controls.HierarchicalVirtualizationItemDesiredSizes" /> object.</summary>
/// <param name="oCompare">The object to compare to this object.</param>
/// <returns>
/// <see langword="true" /> if the specified object is equal to this <see cref="T:System.Windows.Controls.HierarchicalVirtualizationItemDesiredSizes" /> object; otherwise, <see langword="false" />.</returns>
// Token: 0x06005430 RID: 21552 RVA: 0x00175124 File Offset: 0x00173324
public override bool Equals(object oCompare)
{
if (oCompare is HierarchicalVirtualizationItemDesiredSizes)
{
HierarchicalVirtualizationItemDesiredSizes itemDesiredSizes = (HierarchicalVirtualizationItemDesiredSizes)oCompare;
return(this == itemDesiredSizes);
}
return(false);
}
/// <summary>Returns a value that indicates whether the specified <see cref="T:System.Windows.Controls.HierarchicalVirtualizationItemDesiredSizes" /> object is equal to this <see cref="T:System.Windows.Controls.HierarchicalVirtualizationItemDesiredSizes" /> object.</summary>
/// <param name="comparisonItemSizes">The object to compare to this object.</param>
/// <returns>
/// <see langword="true" /> if the specified object is equal to this <see cref="T:System.Windows.Controls.HierarchicalVirtualizationItemDesiredSizes" /> object; otherwise, <see langword="false" />.</returns>
// Token: 0x06005431 RID: 21553 RVA: 0x0017514E File Offset: 0x0017334E
public bool Equals(HierarchicalVirtualizationItemDesiredSizes comparisonItemSizes)
{
return(this == comparisonItemSizes);
}
private void UpdateExtent(bool areItemChangesLocal)
{
bool isHorizontal = (Orientation == Orientation.Horizontal);
ItemsControl itemsControl;
GroupItem groupItem;
IContainItemStorage itemStorageProvider;
IHierarchicalVirtualizationAndScrollInfo virtualizationInfoProvider;
object parentItem;
bool mustDisableVirtualization;
GetOwners(false /*shouldSetVirtualizationState*/, isHorizontal,
out itemsControl, out groupItem, out itemStorageProvider,
out virtualizationInfoProvider, out parentItem, out mustDisableVirtualization);
double uniformOrAverageContainerSize = GetUniformOrAverageContainerSize(itemStorageProvider, parentItem);
bool areContainersUniformlySized = GetAreContainersUniformlySized(itemStorageProvider, parentItem);
IList children = RealizedChildren;
IItemContainerGenerator generator = Generator;
IList items = ((ItemContainerGenerator)generator).ItemsInternal;
int itemCount = items.Count;
if (!areItemChangesLocal)
{
//
// If the actual item changes arent local to this panel then we need to [....]
// the flags for this panel to make sure we gather size updates from
// descendent panel that actually contained the collection changes.
//
double computedUniformOrAverageContainerSize = uniformOrAverageContainerSize;
bool computedAreContainersUniformlySized = areContainersUniformlySized;
SyncUniformSizeFlags(
parentItem,
children,
items,
itemStorageProvider,
itemCount,
computedAreContainersUniformlySized,
computedUniformOrAverageContainerSize,
ref areContainersUniformlySized,
ref uniformOrAverageContainerSize,
isHorizontal,
true /* evaluateAreContainersUniformlySized */);
}
double distance = 0;
ComputeDistance(items, itemStorageProvider, isHorizontal,
areContainersUniformlySized,
uniformOrAverageContainerSize,
0, items.Count, out distance);
if (IsScrolling)
{
if (isHorizontal)
{
_scrollData._extent.Width = distance;
}
else
{
_scrollData._extent.Height = distance;
}
ScrollOwner.InvalidateScrollInfo();
}
else if (virtualizationInfoProvider != null)
{
HierarchicalVirtualizationItemDesiredSizes itemDesiredSizes = virtualizationInfoProvider.ItemDesiredSizes;
if (IsPixelBased)
{
Size pixelSize = itemDesiredSizes.PixelSize;
if (isHorizontal)
{
pixelSize.Width = distance;
}
else
{
pixelSize.Height = distance;
}
itemDesiredSizes = new HierarchicalVirtualizationItemDesiredSizes(
itemDesiredSizes.LogicalSize,
itemDesiredSizes.LogicalSizeInViewport,
itemDesiredSizes.LogicalSizeBeforeViewport,
itemDesiredSizes.LogicalSizeAfterViewport,
pixelSize,
itemDesiredSizes.PixelSizeInViewport,
itemDesiredSizes.PixelSizeBeforeViewport,
itemDesiredSizes.PixelSizeAfterViewport);
}
else
{
Size logicalSize = itemDesiredSizes.LogicalSize;
if (isHorizontal)
{
logicalSize.Width = distance;
}
else
{
logicalSize.Height = distance;
}
itemDesiredSizes = new HierarchicalVirtualizationItemDesiredSizes(
logicalSize,
itemDesiredSizes.LogicalSizeInViewport,
itemDesiredSizes.LogicalSizeBeforeViewport,
itemDesiredSizes.LogicalSizeAfterViewport,
itemDesiredSizes.PixelSize,
itemDesiredSizes.PixelSizeInViewport,
itemDesiredSizes.PixelSizeBeforeViewport,
itemDesiredSizes.PixelSizeAfterViewport);
}
virtualizationInfoProvider.ItemDesiredSizes = itemDesiredSizes;
}
}
