public void Should_Track_Bounds()
{
var target = new BoundsTracker();
var control = default(Rectangle);
var tree = new Decorator
{
Padding = new Thickness(10),
Content = new Decorator
{
Padding = new Thickness(5),
Content = (control = new Rectangle
{
Width = 15,
Height = 15,
}),
}
};
tree.Measure(Size.Infinity);
tree.Arrange(new Rect(0, 0, 100, 100));
var track = target.Track(control, tree);
var results = new List<TransformedBounds>();
track.Subscribe(results.Add);
Assert.Equal(new Rect(15, 15, 15, 15), results.Last().Bounds);
tree.Padding = new Thickness(15);
tree.Measure(Size.Infinity);
tree.Arrange(new Rect(0, 0, 100, 100), true);
Assert.Equal(new Rect(20, 20, 15, 15), results.Last().Bounds);
}
private void SelectedItemChanged(PerspexPropertyChangedEventArgs e)
{
var control = e.NewValue as IControl;
if (control != null)
{
SelectionBoxItem = new Rectangle
{
Width = control.DesiredSize.Width,
Height = control.DesiredSize.Height,
Fill = new VisualBrush
{
Visual = control,
Stretch = Stretch.None,
AlignmentX = AlignmentX.Left,
}
};
}
else
{
SelectionBoxItem = e.NewValue;
}
}
private void UpdateSelectionBoxItem(object item)
{
var contentControl = item as IContentControl;
if (contentControl != null)
{
item = contentControl.Content;
}
var control = item as IControl;
if (control != null)
{
control.Measure(Size.Infinity);
SelectionBoxItem = new Rectangle
{
Width = control.DesiredSize.Width,
Height = control.DesiredSize.Height,
Fill = new VisualBrush
{
Visual = control,
Stretch = Stretch.None,
AlignmentX = AlignmentX.Left,
}
};
}
else
{
SelectionBoxItem = item;
}
}
