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osu-lazer/osu.Game/Screens/Select/Carousel/CarouselHeader.cs

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// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
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#nullable disable
using osu.Framework.Allocation;
using osu.Framework.Audio;
using osu.Framework.Audio.Sample;
using osu.Framework.Bindables;
using osu.Framework.Extensions.Color4Extensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Effects;
using osu.Framework.Graphics.Shapes;
using osu.Framework.Input.Events;
using osu.Framework.Utils;
using osu.Game.Graphics;
using osu.Game.Graphics.UserInterface;
using osuTK;
using osuTK.Graphics;
namespace osu.Game.Screens.Select.Carousel
{
public class CarouselHeader : Container
{
public Container BorderContainer;
public readonly Bindable<CarouselItemState> State = new Bindable<CarouselItemState>(CarouselItemState.NotSelected);
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private readonly HoverLayer hoverLayer;
protected override Container<Drawable> Content { get; } = new Container { RelativeSizeAxes = Axes.Both };
private const float corner_radius = 10;
private const float border_thickness = 2.5f;
public CarouselHeader()
{
RelativeSizeAxes = Axes.X;
Height = DrawableCarouselItem.MAX_HEIGHT;
InternalChild = BorderContainer = new Container
{
RelativeSizeAxes = Axes.Both,
Masking = true,
CornerRadius = corner_radius,
BorderColour = new Color4(221, 255, 255, 255),
Children = new Drawable[]
{
Content,
hoverLayer = new HoverLayer()
}
};
}
protected override void LoadComplete()
{
base.LoadComplete();
State.BindValueChanged(updateState, true);
}
private void updateState(ValueChangedEvent<CarouselItemState> state)
{
switch (state.NewValue)
{
case CarouselItemState.Collapsed:
case CarouselItemState.NotSelected:
hoverLayer.InsetForBorder = false;
BorderContainer.BorderThickness = 0;
BorderContainer.EdgeEffect = new EdgeEffectParameters
{
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Type = EdgeEffectType.Shadow,
Offset = new Vector2(1),
Radius = 10,
Colour = Color4.Black.Opacity(100),
};
break;
case CarouselItemState.Selected:
hoverLayer.InsetForBorder = true;
BorderContainer.BorderThickness = border_thickness;
BorderContainer.EdgeEffect = new EdgeEffectParameters
{
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Type = EdgeEffectType.Glow,
Colour = new Color4(130, 204, 255, 150),
Radius = 20,
Roundness = 10,
};
break;
}
}
public class HoverLayer : HoverSampleDebounceComponent
{
private Sample sampleHover;
private Box box;
public HoverLayer()
{
RelativeSizeAxes = Axes.Both;
}
[BackgroundDependencyLoader]
private void load(AudioManager audio, OsuColour colours)
{
InternalChild = box = new Box
{
Colour = colours.Blue.Opacity(0.1f),
Alpha = 0,
Blending = BlendingParameters.Additive,
RelativeSizeAxes = Axes.Both,
};
sampleHover = audio.Samples.Get("UI/default-hover");
}
public bool InsetForBorder
{
set
{
if (value)
{
// apply same border as above to avoid applying additive overlay to it (and blowing out the colour).
Masking = true;
CornerRadius = corner_radius;
BorderThickness = border_thickness;
}
else
{
BorderThickness = 0;
CornerRadius = 0;
Masking = false;
}
}
}
protected override bool OnHover(HoverEvent e)
{
box.FadeIn(100, Easing.OutQuint);
return base.OnHover(e);
}
protected override void OnHoverLost(HoverLostEvent e)
{
box.FadeOut(1000, Easing.OutQuint);
base.OnHoverLost(e);
}
public override void PlayHoverSample()
{
if (sampleHover == null) return;
sampleHover.Frequency.Value = 0.99 + RNG.NextDouble(0.02);
sampleHover.Play();
}
}
}
}