protected override Size ArrangeOverride(Size finalSize)
{
base.ArrangeOverride(finalSize);
content.Width = finalSize.Width;
content.Height = finalSize.Height;
Rect newRegion = new Rect(0, 0, finalSize.Width, finalSize.Height);
if (newRegion != region && newRegion.Width > 0 && newRegion.Height > 0)
{
TreemapRenderer t = this, child;
while (true)
{
child = t.activeChild;
if (child == null)
{
t.SetRegion(newRegion);
break;
}
t = child;
}
}
return(finalSize);
}
// Render a child
void Clicked(Node n)
{
TreemapRenderer c = new TreemapRenderer(n, n.Name);
Size ns = new Size(region.Width, region.Height);
c.Measure(ns);
c.Arrange(region);
var xlate = new TranslateTransform()
{
X = n.Rect.X,
Y = n.Rect.Y
};
var scale = new ScaleTransform()
{
ScaleX = n.Rect.Width / region.Width,
ScaleY = n.Rect.Height / region.Height
};
c.RenderTransform = new TransformGroup {
Children = { scale, xlate }
};
c.Opacity = 0.5;
content.Children.Add(c);
activeChild = c;
// Animations
TimeSpan time = TimeSpan.FromSeconds(0.3);
var s = new Storyboard()
{
Children =
{
Animate(time, xlate, "X", 0),
Animate(time, xlate, "Y", 0),
Animate(time, scale, "ScaleX", 1.0),
Animate(time, scale, "ScaleY", 1.0),
Animate(time, c, "Opacity", 1.0),
}
};
s.Begin();
}
public void Back()
{
TreemapRenderer last = this, child = activeChild;
while (child != null && child.activeChild != null)
{
last = child;
child = child.activeChild;
}
if (child != null)
{
Rect childRegion = child.region;
last.content.Children.Remove(child);
last.activeChild = null;
// In case layout changed while we were rendering the child
if (childRegion != region)
{
SetRegion(childRegion);
}
}
}
