osu/osu.Game/Graphics/UserInterface/BackButton.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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using System;
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using osu.Framework.Allocation;
using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
using osu.Framework.Input.Bindings;
using osu.Game.Input.Bindings;
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namespace osu.Game.Graphics.UserInterface
{
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public class BackButton : VisibilityContainer
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{
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public Action Action;
private readonly TwoLayerButton button;
public BackButton(Receptor receptor = null)
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{
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Size = TwoLayerButton.SIZE_EXTENDED;
Child = button = new TwoLayerButton
{
Anchor = Anchor.TopLeft,
Origin = Anchor.TopLeft,
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Text = @"back",
Icon = OsuIcon.LeftCircle,
Action = () => Action?.Invoke()
};
if (receptor == null)
{
// if a receptor wasn't provided, create our own locally.
Add(receptor = new Receptor());
}
receptor.OnBackPressed = () => button.Click();
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}
[BackgroundDependencyLoader]
private void load(OsuColour colours)
{
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button.BackgroundColour = colours.Pink;
button.HoverColour = colours.PinkDark;
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}
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protected override void PopIn()
{
button.MoveToX(0, 400, Easing.OutQuint);
button.FadeIn(150, Easing.OutQuint);
}
protected override void PopOut()
{
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button.MoveToX(-TwoLayerButton.SIZE_EXTENDED.X / 2, 400, Easing.OutQuint);
button.FadeOut(400, Easing.OutQuint);
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}
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public class Receptor : Drawable, IKeyBindingHandler<GlobalAction>
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{
public Action OnBackPressed;
public bool OnPressed(GlobalAction action)
{
switch (action)
{
case GlobalAction.Back:
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OnBackPressed?.Invoke();
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return true;
}
return false;
}
public void OnReleased(GlobalAction action)
{
}
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}
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}
}