public PositionOverlayReactor(PositionedOverlaySettings Settings)
{
HAlignment = Settings
.ObserveProperty(M => M.HorizontalAlignment)
.Select(M =>
{
switch (M)
{
case Alignment.Start:
return(HorizontalAlignment.Left);
case Alignment.Center:
return(HorizontalAlignment.Center);
case Alignment.End:
return(HorizontalAlignment.Right);
default:
return(HorizontalAlignment.Stretch);
}
})
.ToReadOnlyReactivePropertySlim();
VAlignment = Settings
.ObserveProperty(M => M.VerticalAlignment)
.Select(M =>
{
switch (M)
{
case Alignment.Start:
return(VerticalAlignment.Top);
case Alignment.Center:
return(VerticalAlignment.Center);
case Alignment.End:
return(VerticalAlignment.Bottom);
default:
return(VerticalAlignment.Stretch);
}
})
.ToReadOnlyReactivePropertySlim();
Margin = Settings
.ObserveProperty(M => M.HorizontalAlignment)
.CombineLatest(
Settings
.ObserveProperty(M => M.VerticalAlignment),
Settings
.ObserveProperty(M => M.X),
Settings
.ObserveProperty(M => M.Y),
MarginPropSelector)
.ToReadOnlyReactivePropertySlim();
}
private Controls.LayerFrame Generate(PositionedOverlaySettings settings, string text, Color backgroundColor)
{
var control = new Controls.LayerFrame
{
Border =
{
Background = new SolidColorBrush(backgroundColor)
},
HorizontalAlignment = HorizontalAlignment.Left,
VerticalAlignment = VerticalAlignment.Top,
Label =
{
Content = text,
Foreground = new SolidColorBrush(Colors.White)
}
};
void Update()
{
int left = 0, top = 0, right = 0, bottom = 0;
switch (settings.HorizontalAlignment)
{
case Alignment.Start:
control.HorizontalAlignment = HorizontalAlignment.Left;
left = settings.X;
break;
case Alignment.Center:
control.HorizontalAlignment = HorizontalAlignment.Center;
left = settings.X;
break;
case Alignment.End:
control.HorizontalAlignment = HorizontalAlignment.Right;
right = settings.X;
break;
}
switch (settings.VerticalAlignment)
{
case Alignment.Start:
control.VerticalAlignment = VerticalAlignment.Top;
top = settings.Y;
break;
case Alignment.Center:
control.VerticalAlignment = VerticalAlignment.Center;
top = settings.Y;
break;
case Alignment.End:
control.VerticalAlignment = VerticalAlignment.Bottom;
bottom = settings.Y;
break;
}
Dispatcher.Invoke(() => control.Margin = new Thickness(left, top, right, bottom));
}
settings.PropertyChanged += (s, e) => Update();
Update();
control.PositionUpdated += rect =>
{
settings.X = (int)rect.X;
settings.Y = (int)rect.Y;
};
return(control);
}
