/// <summary>
/// ArrangeOverride
/// </summary>
/// <param name="finalSize">The final area within the parent that this object should use to arrange itself and its children.</param>
/// <returns>The actual size that is used after the element is arranged in layout.</returns>
protected override Size ArrangeOverride(Size finalSize)
{
if (this.OwningGrid == null)
{
return(base.ArrangeOverride(finalSize));
}
Size size = base.ArrangeOverride(finalSize);
if (_rootElement != null)
{
if (this.OwningGrid.AreRowGroupHeadersFrozen)
{
foreach (UIElement child in _rootElement.Children)
{
child.Clip = null;
}
}
else
{
double frozenLeftEdge = 0;
foreach (UIElement child in _rootElement.Children)
{
if (DataGridFrozenGrid.GetIsFrozen(child) && child.Visibility == Visibility.Visible)
{
TranslateTransform transform = new TranslateTransform();
// Automatic layout rounding doesn't apply to transforms so we need to Round this
transform.X = Math.Round(this.OwningGrid.HorizontalOffset);
child.RenderTransform = transform;
double childLeftEdge = child.Translate(this, new Point(child.RenderSize.Width, 0)).X - transform.X;
frozenLeftEdge = Math.Max(frozenLeftEdge, childLeftEdge + this.OwningGrid.HorizontalOffset);
}
}
// Clip the non-frozen elements so they don't overlap the frozen ones
foreach (UIElement child in _rootElement.Children)
{
if (!DataGridFrozenGrid.GetIsFrozen(child))
{
EnsureChildClip(child, frozenLeftEdge);
}
}
}
}
return(size);
}
/// <summary>
/// Arranges the content of the <see cref="T:Avalonia.Controls.DataGridRow" />.
/// </summary>
/// <returns>
/// The actual size used by the <see cref="T:Avalonia.Controls.DataGridRow" />.
/// </returns>
/// <param name="finalSize">
/// The final area within the parent that this element should use to arrange itself and its children.
/// </param>
protected override Size ArrangeOverride(Size finalSize)
{
if (OwningGrid == null)
{
return(base.ArrangeOverride(finalSize));
}
// If the DataGrid was scrolled horizontally after our last Arrange, we need to make sure
// the Cells and Details are Arranged again
if (_lastHorizontalOffset != OwningGrid.HorizontalOffset)
{
_lastHorizontalOffset = OwningGrid.HorizontalOffset;
InvalidateHorizontalArrange();
}
Size size = base.ArrangeOverride(finalSize);
if (_checkDetailsContentHeight)
{
_checkDetailsContentHeight = false;
EnsureDetailsContentHeight();
}
if (RootElement != null)
{
foreach (Control child in RootElement.Children)
{
if (DataGridFrozenGrid.GetIsFrozen(child))
{
TranslateTransform transform = new TranslateTransform();
// Automatic layout rounding doesn't apply to transforms so we need to Round this
transform.X = Math.Round(OwningGrid.HorizontalOffset);
child.RenderTransform = transform;
}
}
}
if (_bottomGridLine != null)
{
RectangleGeometry gridlineClipGeometry = new RectangleGeometry();
gridlineClipGeometry.Rect = new Rect(OwningGrid.HorizontalOffset, 0, Math.Max(0, DesiredSize.Width - OwningGrid.HorizontalOffset), _bottomGridLine.DesiredSize.Height);
_bottomGridLine.Clip = gridlineClipGeometry;
}
return(size);
}