/// <summary>
/// Arrange Children based on their set relative position and size.
/// </summary>
protected override Size ArrangeOverride(Size finalSize)
{
if (Children == null || Children.Count == 0)
{
return(finalSize);
}
foreach (FrameworkElement child in Children)
{
double size = ScatterCanvas.GetSize(child);
double tempHeight = finalSize.Height * size, tempWidth = finalSize.Width * size;
if (tempHeight < 0 || tempWidth < 0)
{
continue;
}
if ((Stretch)child.GetValue(ScatterViewItem.StretchProperty) == Stretch.None)
{
tempHeight = child.DesiredSize.Height;
tempWidth = child.DesiredSize.Width;
}
Point center = ScatterCanvas.GetCenter(child);
Point pinPoint = ScatterCanvas.GetPinPoint(child);
Point actualPinPoint = new Point(center.X * finalSize.Width - tempWidth * pinPoint.X, center.Y * finalSize.Height - tempHeight * pinPoint.Y);
child.Arrange(new Rect(actualPinPoint, new Size(tempWidth, tempHeight)));
}
return(finalSize);
}
/// <summary>
/// Measure the Children with Positive infinity height and width.
/// </summary>
protected override Size MeasureOverride(Size constraint)
{
Size unconstrained = new Size(Double.PositiveInfinity, Double.PositiveInfinity);
foreach (FrameworkElement child in Children)
{
double size = ScatterCanvas.GetSize(child);
double tempHeight = constraint.Height * size, tempWidth = constraint.Width * size;
if (tempHeight < 0 || tempWidth < 0)
{
continue;
}
if ((Stretch)child.GetValue(ScatterViewItem.StretchProperty) == Stretch.None)
{
tempHeight = Double.PositiveInfinity;
tempWidth = Double.PositiveInfinity;
}
child.Measure(new Size(tempWidth, tempHeight));
}
return(constraint);
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
//_canvas = Template.FindName("PART_PANEL",this) as ScatterCanvas;
_canvas = TreeHelper.FindDescendent(this, "PART_PANEL") as ScatterCanvas;
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
//_canvas = Template.FindName("PART_PANEL",this) as ScatterCanvas;
_canvas = TreeHelper.FindDescendent(this, "PART_PANEL") as ScatterCanvas;
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_canvas = Template.FindName("PART_PANEL",this) as ScatterCanvas;
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
_canvas = Template.FindName("PART_PANEL", this) as ScatterCanvas;
}
