public override void Measure(Size availableSize)
{
Orientation orientation = Orientation;
var baseSize = (orientation == Orientation.Horizontal)
? new Size(double.PositiveInfinity, availableSize.Height)
: new Size(availableSize.Width, double.PositiveInfinity);
var totalSize = new Size();
ChildRectDic.Clear();
foreach (var child in Children)
{
child.Measure(baseSize);
var size = child.DesiredSize;
switch (orientation)
{
case Orientation.Horizontal:
ChildRectDic.Add(child, new Rect(new Point(totalSize.Width, 0), size));
totalSize.Height = Math.Max(totalSize.Height, size.Height);
totalSize.Width += size.Width;
break;
case Orientation.Vertical:
ChildRectDic.Add(child, new Rect(new Point(0, totalSize.Height), size));
totalSize.Height += size.Height;
totalSize.Width = Math.Max(totalSize.Width, size.Width);
break;
}
}
DesiredSize = totalSize;
}
public virtual Immutable.Point GetChilldLocation(ControlBase child)
{
if (ChildRectDic.TryGetValue(child, out Immutable.Rect rect))
{
return(rect.Location);
}
return(Immutable.Point.Empty);
}
public override void Measure(Size availableSize)
{
var columnCount = ColumnDefinitions.Count;
if (columnCount == 0)
{
return;
}
_columnWidthArray = new double[columnCount];
_rowHeighArray = new double[(Children.Count + columnCount - 1) / ColumnDefinitions.Count];
// MEMO : 行と桁のサイズを確定します。
{
int row = 0, column = 0;
foreach (var child in Children)
{
if (child.MeasureDirty)
{
child.Measure(availableSize);
}
var size = child.DesiredSize;
_columnWidthArray[column] = Math.Max(_columnWidthArray[column], size.Width);
_rowHeighArray[row] = Math.Max(_rowHeighArray[row], size.Height);
if (++column >= columnCount)
{
row++;
column = 0;
}
}
}
// MEMO : 矩形をキャッシュします。
{
int row = 0, column = 0;
var location = new Point();
ChildRectDic.Clear();
foreach (var child in Children)
{
ChildRectDic.Add(child, new Rect(location, child.DesiredSize));
location.X += _columnWidthArray[column];
if (++column >= columnCount)
{
location.Y += _rowHeighArray[row];
location.X = 0;
row++;
column = 0;
}
}
}
DesiredSize = new Size(_columnWidthArray.Sum(), _rowHeighArray.Sum());
}
public override void Measure(Size availableSize)
{
var totalRect = new Rect();
ChildRectDic.Clear();
foreach (var child in Children)
{
child.Measure(availableSize);
var size = child.DesiredSize;
var location = GetChilldLocation(child);
var rect = new Rect(location, size);
ChildRectDic.Add(child, rect);
totalRect.Union(rect);
}
DesiredSize = totalRect.Size;
}
