private static void BackgroundPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.NewValue != e.OldValue)
{
if (d is FrameworkElement sender)
{
var NewBrush = e.NewValue as Brush;
var OldBrush = e.OldValue as Brush;
DependencyProperty BackgroundProperty = null;
if (sender is Panel)
{
BackgroundProperty = Panel.BackgroundProperty;
}
else if (sender is Control)
{
BackgroundProperty = Control.BackgroundProperty;
}
else if (sender is Shape)
{
BackgroundProperty = Shape.FillProperty;
}
if (BackgroundProperty == null)
{
return;
}
if (sender.GetValue(BackgroundProperty) is IFluentBrush tmp_fluent)
{
sender.SetValue(BackgroundProperty, OldBrush);
//tmp_fluent.ClearEventList();
//tmp_fluent.Dispose();
}
IFluentBrush FluentBrush = null;
if (OldBrush is SolidColorBrush && NewBrush is SolidColorBrush)
{
FluentBrush = new FluentSolidColorBrush()
{
Duration = GetDuration(sender),
BaseBrush = OldBrush,
};
}
else if (OldBrush is LinearGradientBrush && NewBrush is SolidColorBrush ||
OldBrush is SolidColorBrush && NewBrush is LinearGradientBrush ||
OldBrush is LinearGradientBrush && NewBrush is LinearGradientBrush)
{
FluentBrush = new FluentCompositeBrush()
{
Duration = GetDuration(sender),
BaseBrush = OldBrush,
};
}
if (FluentBrush == null)
{
sender.SetValue(BackgroundProperty, NewBrush);
return;
}
FluentBrush.TransitionCompleted += (s, a) =>
{
sender.SetValue(BackgroundProperty, a.NewBrush);
//if (s is IFluentBrush tmp_brush)
//{
// tmp_brush.ClearEventList();
// tmp_brush.Dispose();
//}
};
sender.SetValue(BackgroundProperty, FluentBrush);
FluentBrush.BaseBrush = NewBrush;
if (NewBrush is SolidColorBrush tmp_new_brush)
{
//tmp_new_brush.RegisterPropertyChangedCallback(SolidColorBrush.ColorProperty,Col)
}
}
}
}
protected override void OnDetaching()
{
AssociatedObject?.SetValue(BackgroundProperty, NowBrush);
FluentBrush = null;
}
