public void Render(DrawingContext drawingContext, Vector offset, Size renderSize)
{
if (renderSize.AreaOf() <= 0)
{
return;
}
var startingRow = FindFirstVisibleRow(offset);
if (startingRow == null)
{
return;
}
var end = offset + renderSize.ToVector();
var transform = new TranslateTransform();
for (
var currentRowIndex = startingRow.Value
; currentRowIndex < AvailableRows.Length
; ++currentRowIndex
)
{
var currentRow = AvailableRows[currentRowIndex];
if (currentRow == null)
{
continue;
}
if (currentRow.OffsetY > end.Y)
{
break;
}
transform.X = -offset.X;
transform.Y = -(offset.Y + currentRow.OffsetY);
drawingContext.PushTransform(transform);
currentRow.Render(drawingContext);
drawingContext.Pop();
}
}