public static Brush GetHoverRevealBrush(UIElement target)
{
RadialGradientBrush brush = new(Colors.White, Colors.Transparent)
{
MappingMode = BrushMappingMode.Absolute,
Opacity = 0.0,
RadiusX = DefaultRevealBackgroudBrushRadius,
RadiusY = DefaultRevealBackgroudBrushRadius
};
var binding = new MultiBinding
{
Converter = new RelativePositionConverter()
};
binding.Bindings.Add(new Binding()
{
Source = target, Path = new PropertyPath(RevealBrushHelper.RootObjectProperty)
});
binding.Bindings.Add(new Binding()
{
Source = target
});
binding.Bindings.Add(new Binding()
{
Source = target, Path = new PropertyPath(RevealBrushHelper.MousePositionProperty)
});
BindingOperations.SetBinding(brush, RadialGradientBrush.CenterProperty, binding);
BindingOperations.SetBinding(brush, RadialGradientBrush.GradientOriginProperty, binding);
RevealBrushHelper.SetRevealBrush(target, brush);
return(brush);
}
public static void UpdateBrush(UIElement uiElement)
{
RevealBrushState revealBrushState = RevealBrushHelper.GetState(uiElement);
bool isMouseOverRootVisual = RevealBrushHelper.GetIsMouseOverRootVisual(uiElement);
if (RevealBrushHelper.GetRevealBrush(uiElement) is Brush brush)
{
brush.Opacity = (isMouseOverRootVisual && revealBrushState == RevealBrushState.Normal) ? 1.0 : 0.0;
}
}
public static Brush GetPressedRevealBrush(UIElement target)
{
var gradientStops = new GradientStopCollection(
new[]
{
new GradientStop(Color.FromArgb(30, 255, 255, 255), 0),
new GradientStop(Color.FromArgb(40, 255, 255, 255), 0),
new GradientStop(Colors.Transparent, 1)
});
RadialGradientBrush brush = new(gradientStops)
{
MappingMode = BrushMappingMode.Absolute,
Opacity = 0.0,
RadiusX = 200.0,
RadiusY = 200.0
};
var binding = new MultiBinding
{
Converter = new RelativePositionConverter()
};
binding.Bindings.Add(new Binding()
{
Source = target, Path = new PropertyPath(RevealBrushHelper.RootObjectProperty)
});
binding.Bindings.Add(new Binding()
{
Source = target
});
binding.Bindings.Add(new Binding()
{
Source = target, Path = new PropertyPath(RevealBrushHelper.MousePositionProperty)
});
BindingOperations.SetBinding(brush, RadialGradientBrush.CenterProperty, binding);
BindingOperations.SetBinding(brush, RadialGradientBrush.GradientOriginProperty, binding);
RevealBrushHelper.SetRevealBrush(target, brush);
return(brush);
}
public static void UpdateBrush(UIElement uiElement)
{
RevealBrushState revealBrushState = RevealBrushHelper.GetState(uiElement);
RevealBrushMode revealBrushMode = RevealBrushHelper.GetRevealBrushMode(uiElement);
if (RevealBrushHelper.GetRevealBrush(uiElement) is RadialGradientBrush brush)
{
if (revealBrushMode == RevealBrushMode.Background)
{
brush.Opacity = (revealBrushState != RevealBrushState.Normal) ? 0.1 : 0.0;
}
else if (revealBrushMode == RevealBrushMode.BackgroundPressed)
{
if (revealBrushState == RevealBrushState.Pressed)
{
var time = TimeSpan.FromMilliseconds(1500);
var easingFunction = new CubicEase()
{
EasingMode = EasingMode.EaseOut
};
var opacityAnimation = new DoubleAnimation(1.0, 0.0, time)
{
EasingFunction = easingFunction
};
brush.BeginAnimation(Brush.OpacityProperty, opacityAnimation);
var radiusAnimation = new DoubleAnimation(50.0, 200.0, time)
{
EasingFunction = easingFunction
};
brush.BeginAnimation(RadialGradientBrush.RadiusXProperty, radiusAnimation);
brush.BeginAnimation(RadialGradientBrush.RadiusYProperty, radiusAnimation);
var gradientStop = brush.GradientStops[1];
var offsetAnimation = new DoubleAnimation(0, 0.8, time)
{
EasingFunction = easingFunction
};
gradientStop.BeginAnimation(GradientStop.OffsetProperty, offsetAnimation);
}
else
{
var time = TimeSpan.FromMilliseconds(200);
var easingFunction = new CubicEase()
{
EasingMode = EasingMode.EaseOut
};
var opacityAnimation = new DoubleAnimation(0.0, time)
{
EasingFunction = easingFunction
};
brush.BeginAnimation(Brush.OpacityProperty, opacityAnimation);
var radiusAnimation = new DoubleAnimation(200.0, time)
{
EasingFunction = easingFunction
};
brush.BeginAnimation(RadialGradientBrush.RadiusXProperty, radiusAnimation);
brush.BeginAnimation(RadialGradientBrush.RadiusYProperty, radiusAnimation);
}
}
}
}
