osu/osu.Game/Graphics/Containers/OsuHoverContainer.cs

87 lines
2.2 KiB
C#

// 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.
#nullable disable
using osu.Framework.Allocation;
using osu.Framework.Extensions.IEnumerableExtensions;
using osu.Framework.Graphics;
using osu.Framework.Input.Events;
using osuTK.Graphics;
using System.Collections.Generic;
using osu.Game.Graphics.UserInterface;
namespace osu.Game.Graphics.Containers
{
public class OsuHoverContainer : OsuClickableContainer
{
protected const float FADE_DURATION = 500;
protected Color4 HoverColour;
protected Color4 IdleColour = Color4.White;
protected virtual IEnumerable<Drawable> EffectTargets => new[] { Content };
public OsuHoverContainer(HoverSampleSet sampleSet = HoverSampleSet.Default)
: base(sampleSet)
{
Enabled.ValueChanged += e =>
{
if (isHovered)
{
if (e.NewValue)
fadeIn();
else
fadeOut();
}
};
}
private bool isHovered;
protected override bool OnHover(HoverEvent e)
{
if (isHovered)
return false;
isHovered = true;
if (!Enabled.Value)
return false;
fadeIn();
return base.OnHover(e);
}
protected override void OnHoverLost(HoverLostEvent e)
{
if (!isHovered)
return;
isHovered = false;
fadeOut();
base.OnHoverLost(e);
}
[BackgroundDependencyLoader]
private void load(OsuColour colours)
{
if (HoverColour == default)
HoverColour = colours.Yellow;
}
protected override void LoadComplete()
{
base.LoadComplete();
EffectTargets.ForEach(d => d.FadeColour(IdleColour));
}
private void fadeIn() => EffectTargets.ForEach(d => d.FadeColour(HoverColour, FADE_DURATION, Easing.OutQuint));
private void fadeOut() => EffectTargets.ForEach(d => d.FadeColour(IdleColour, FADE_DURATION, Easing.OutQuint));
}
}