/// <summary>
/// If necessary, expands the virtual cell metadata array to accomodate all of the grid's virtual cells.
/// </summary>
private void ExpandVirtualCellMetadataArray()
{
if (virtualCells != null && virtualCells.Length == Children.Count)
{
return;
}
virtualCells = new VirtualCellMetadata[Children.Count];
for (int i = 0; i < virtualCells.Length; i++)
{
virtualCells[i] = new VirtualCellMetadata();
virtualCells[i].Element = Children[i];
}
}
/// <summary>
/// Measures the element contained by the specified virtual cell.
/// </summary>
/// <param name="cell">The virtual cell to measure.</param>
/// <param name="options">The measurement options for this cell.</param>
private void MeasureVirtualCell(VirtualCellMetadata cell, GridMeasurementOptions options)
{
var cellWidth = 0.0;
var cellHeight = 0.0;
if ((options & GridMeasurementOptions.AssumeInfiniteWidth) == GridMeasurementOptions.AssumeInfiniteWidth)
{
cellWidth = Double.PositiveInfinity;
}
else
{
// If we contain auto columns, then the content determines our width (so assume no constraint)
if (cell.ContainsAutoColumns && !cell.ContainsStarColumns)
{
cellWidth = Double.PositiveInfinity;
}
else
{
cellWidth = CalculateSpanDimension(ColumnDefinitions, cell.ColumnIndex, cell.ColumnSpan);
}
}
if ((options & GridMeasurementOptions.AssumeInfiniteHeight) == GridMeasurementOptions.AssumeInfiniteHeight)
{
cellHeight = Double.PositiveInfinity;
}
else
{
// If we contain auto rows, then the content determines our height (so assume no constraint)
if (cell.ContainsAutoRows && !cell.ContainsStarRows)
{
cellHeight = Double.PositiveInfinity;
}
else
{
cellHeight = CalculateSpanDimension(RowDefinitions, cell.RowIndex, cell.RowSpan);
}
}
var cellSize = new Size2D(cellWidth, cellHeight);
cell.Element.Measure(cellSize);
}
/// <summary>
/// Measures the element contained by the specified virtual cell.
/// </summary>
/// <param name="cell">The virtual cell to measure.</param>
/// <param name="options">The measurement options for this cell.</param>
private void MeasureVirtualCell(VirtualCellMetadata cell, GridMeasurementOptions options)
{
var cellWidth = 0.0;
var cellHeight = 0.0;
if ((options & GridMeasurementOptions.AssumeInfiniteWidth) == GridMeasurementOptions.AssumeInfiniteWidth)
{
cellWidth = Double.PositiveInfinity;
}
else
{
// If we contain auto columns, then the content determines our width (so assume no constraint)
if (cell.ContainsAutoColumns && !cell.ContainsStarColumns)
{
cellWidth = Double.PositiveInfinity;
}
else
{
cellWidth = CalculateSpanDimension(ColumnDefinitions, cell.ColumnIndex, cell.ColumnSpan);
}
}
if ((options & GridMeasurementOptions.AssumeInfiniteHeight) == GridMeasurementOptions.AssumeInfiniteHeight)
{
cellHeight = Double.PositiveInfinity;
}
else
{
// If we contain auto rows, then the content determines our height (so assume no constraint)
if (cell.ContainsAutoRows && !cell.ContainsStarRows)
{
cellHeight = Double.PositiveInfinity;
}
else
{
cellHeight = CalculateSpanDimension(RowDefinitions, cell.RowIndex, cell.RowSpan);
}
}
var cellSize = new Size2D(cellWidth, cellHeight);
cell.Element.Measure(cellSize);
}
/// <summary>
/// If necessary, expands the virtual cell metadata array to accomodate all of the grid's virtual cells.
/// </summary>
private void ExpandVirtualCellMetadataArray()
{
if (virtualCells != null && virtualCells.Length == Children.Count)
return;
virtualCells = new VirtualCellMetadata[Children.Count];
for (int i = 0; i < virtualCells.Length; i++)
{
virtualCells[i] = new VirtualCellMetadata();
virtualCells[i].Element = Children[i];
}
}
