public override Size MeasureOverride(IPanelAdapter adapter, Size availaibleSize)
{
if (adapter.ChildrenCount < 1)
{
return(new Size(1, 1));
}
// measure the first Child
adapter.Measure(0, availaibleSize);
var firstSize = adapter.GetDesiredSize(0);
for (int i = 1; i < adapter.ChildrenCount; i++)
{
adapter.Measure(i, firstSize);
}
return(firstSize);
}
public override Size MeasureOverride(IPanelAdapter adapter, Size availaibleSize)
{
measurements.Clear();
var cellSize = new Size();
for (int i = 0; i < adapter.ChildrenCount; i++)
{
if (i % Columns == 0)
{
cellSize = new Size(availaibleSize.Width / Columns,
availaibleSize.Height - measurements.Sum(j => j.RowHeight));
measurements.Add(new MeasurementRowHeight());
}
adapter.Measure(i, cellSize);
measurements.Last().AddItem(i, adapter.GetDesiredSize(i).Height);
}
return(new Size(availaibleSize.Width, measurements.Sum(i => i.RowHeight)));
}
public override Size ArrangeOverride(IPanelAdapter adapter, Size finalSize)
{
if (adapter.ChildrenCount < 1)
{
return(finalSize);
}
var desiredSize = adapter.GetDesiredSize(0);
var finalRect = new Rect(
new Point((finalSize.Width - desiredSize.Width) / 2, (finalSize.Height - desiredSize.Height) / 2), desiredSize);
var adjustedRect = ApplyOffset ? new Rect(OffsetPoint(finalRect, Offset.Left, Offset.Top),
OffsetPoint(finalRect, Offset.Right, Offset.Bottom)) : finalRect;
for (int i = 0; i < adapter.ChildrenCount; i++)
{
adapter.Arrange(i, i == 0 ? finalRect : adjustedRect);
}
return(finalSize);
}