private void _dataViewUpdateTimer_Tick(object sender, EventArgs e)
{
if (!DetailedDataView.IsMouseOverElement(this) && this.DataContext != null)
{
this.UpdateDataViewsMouseOverState();
}
}
private void NotifyDataViewMouseEnter(DetailedDataGroupView dataView)
{
var counterPart = DetailedDataView.GetCounterpart(dataView);
Panel.SetZIndex(dataView, 1);
if (counterPart != null)
{
Panel.SetZIndex(counterPart, 0);
}
dataView.MinimumPriority = (int)DetailedDataViewModel.DisplayPriority.DefaultHidden;
dataView.Height = double.NaN;
}
private void NotifyDataViewMouseLeave(DetailedDataGroupView dataView)
{
var counterPart = DetailedDataView.GetCounterpart(dataView);
dataView.MinimumPriority = _defaultDataPriority;
var binding = new Binding("ActualHeight");
binding.Converter = SHalfConverter;
binding.Source = VisualTreeHelper.GetParent(dataView);
dataView.SetBinding(MinHeightProperty, binding);
dataView.SetBinding(HeightProperty, binding);
}
private void UpdateDataViewsMouseOverState()
{
// mouse might be over 2 data views at the same time (e.g. an expanded upper view and a covered lower view)
var mouseOverDataViews = new List <DetailedDataGroupView>(2);
if (!Keyboard.IsKeyDown(Key.LeftCtrl) && this.IsMouseOver)
{
foreach (var dataView in _dataViews)
{
if (DetailedDataView.IsMouseOverElement(dataView))
{
mouseOverDataViews.Add(dataView);
if (mouseOverDataViews.Count == 2)
{
break;
}
}
}
}
if (mouseOverDataViews.Count == 0)
{
if (_previousMouseOverDataView != null)
{
this.NotifyDataViewMouseLeave(_previousMouseOverDataView);
}
_previousMouseOverDataView = null;
foreach (var dataView in _dataViews)
{
this.BrightenDataView(dataView);
}
}
else
{
var mouseOverDataView = mouseOverDataViews.OrderByDescending(v => Panel.GetZIndex(v)).First();
if (_previousMouseOverDataView == mouseOverDataView)
{
return;
}
if (_previousMouseOverDataView != null)
{
this.NotifyDataViewMouseLeave(_previousMouseOverDataView);
}
this.NotifyDataViewMouseEnter(mouseOverDataView);
_previousMouseOverDataView = mouseOverDataView;
foreach (var dataView in _dataViews)
{
if (dataView == mouseOverDataView)
{
this.BrightenDataView(dataView);
}
else
{
this.DarkenDataView(dataView);
}
}
}
}
