// 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. 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 partial 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)); } }