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osu-lazer/osu.Game/Screens/Menu/ButtonArea.cs
2022-06-17 16:37:17 +09:00

159 lines
4.7 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 System;
using osu.Framework;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Game.Graphics;
using osuTK;
namespace osu.Game.Screens.Menu
{
public class ButtonArea : Container, IStateful<Visibility>
{
public FlowContainerWithOrigin Flow;
protected override Container<Drawable> Content => Flow;
private readonly ButtonAreaBackground buttonAreaBackground;
private Visibility state;
public const float BUTTON_AREA_HEIGHT = 100;
public ButtonArea()
{
RelativeSizeAxes = Axes.Both;
InternalChild = new Container
{
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
RelativeSizeAxes = Axes.X,
Size = new Vector2(1, BUTTON_AREA_HEIGHT),
Alpha = 0,
AlwaysPresent = true, // Always needs to be present for correct tracking on initial -> toplevel state change
Children = new Drawable[]
{
buttonAreaBackground = new ButtonAreaBackground(),
Flow = new FlowContainerWithOrigin
{
Direction = FillDirection.Horizontal,
Spacing = new Vector2(-ButtonSystem.WEDGE_WIDTH, 0),
Anchor = Anchor.Centre,
AutoSizeAxes = Axes.Both,
}
}
};
}
public ButtonSystemState ButtonSystemState
{
set
{
switch (value)
{
case ButtonSystemState.Exit:
case ButtonSystemState.Initial:
case ButtonSystemState.EnteringMode:
Hide();
break;
case ButtonSystemState.TopLevel:
case ButtonSystemState.Play:
Show();
break;
}
buttonAreaBackground.ButtonSystemState = value;
}
}
public Visibility State
{
get => state;
set
{
if (value == state) return;
state = value;
InternalChild.FadeTo(state == Visibility.Hidden ? 0 : 1, 300);
StateChanged?.Invoke(state);
}
}
public override void Hide() => State = Visibility.Hidden;
public override void Show() => State = Visibility.Visible;
public event Action<Visibility> StateChanged;
private class ButtonAreaBackground : Box, IStateful<ButtonAreaBackgroundState>
{
private ButtonAreaBackgroundState state;
public ButtonAreaBackground()
{
RelativeSizeAxes = Axes.Both;
Size = new Vector2(2, 1);
Colour = OsuColour.Gray(50);
Anchor = Anchor.Centre;
Origin = Anchor.Centre;
}
public ButtonAreaBackgroundState State
{
get => state;
set
{
if (value == state) return;
state = value;
switch (state)
{
case ButtonAreaBackgroundState.Flat:
this.ScaleTo(new Vector2(2, 0), 300, Easing.InSine);
break;
case ButtonAreaBackgroundState.Normal:
this.ScaleTo(Vector2.One, 400, Easing.OutQuint);
break;
}
StateChanged?.Invoke(state);
}
}
public ButtonSystemState ButtonSystemState
{
set
{
switch (value)
{
default:
State = ButtonAreaBackgroundState.Normal;
break;
case ButtonSystemState.Initial:
case ButtonSystemState.Exit:
case ButtonSystemState.EnteringMode:
State = ButtonAreaBackgroundState.Flat;
break;
}
}
}
public event Action<ButtonAreaBackgroundState> StateChanged;
}
public enum ButtonAreaBackgroundState
{
Normal,
Flat
}
}
}