osukey/osu.Game/Graphics/UserInterface/BackButton.cs

// 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.Graphics;
using osu.Framework.Input.Bindings;
using osu.Game.Input.Bindings;

namespace osu.Game.Graphics.UserInterface
{
    public class BackButton : TwoLayerButton, IKeyBindingHandler<GlobalAction>
    {
        public BackButton()
        {
            Text = @"back";
            Icon = OsuIcon.LeftCircle;
            Anchor = Anchor.BottomLeft;
            Origin = Anchor.BottomLeft;
        }

        [BackgroundDependencyLoader]
        private void load(OsuColour colours)
        {
            BackgroundColour = colours.Pink;
            HoverColour = colours.PinkDark;
        }

        public bool OnPressed(GlobalAction action)
        {
            if (action == GlobalAction.Back)
            {
                Action?.Invoke();
                return true;
            }

            return false;
        }

        public bool OnReleased(GlobalAction action) => action == GlobalAction.Back;
    }
}