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osu-lazer/osu.Game/Graphics/UserInterface/ExpandingBar.cs
2020-03-02 20:16:58 +09:00

104 lines
2.5 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.
using osu.Framework.Graphics;
using osu.Framework.Graphics.Shapes;
using osuTK;
namespace osu.Game.Graphics.UserInterface
{
/// <summary>
/// A rounded bar which can be expanded or collapsed.
/// Generally used for tabs or breadcrumbs.
/// </summary>
public class ExpandingBar : Circle
{
private bool expanded = true;
public bool Expanded
{
get => expanded;
set
{
if (value == expanded)
return;
expanded = value;
updateState();
}
}
private float expandedSize = 4;
public float ExpandedSize
{
get => expandedSize;
set
{
if (value == expandedSize)
return;
expandedSize = value;
updateState();
}
}
private float collapsedSize = 2;
public float CollapsedSize
{
get => collapsedSize;
set
{
if (value == collapsedSize)
return;
collapsedSize = value;
updateState();
}
}
public override Axes RelativeSizeAxes
{
get => base.RelativeSizeAxes;
set
{
base.RelativeSizeAxes = Axes.None;
Size = Vector2.Zero;
base.RelativeSizeAxes = value;
updateState();
}
}
public ExpandingBar()
{
RelativeSizeAxes = Axes.X;
Origin = Anchor.Centre;
}
protected override void LoadComplete()
{
base.LoadComplete();
updateState();
}
public void Collapse() => Expanded = false;
public void Expand() => Expanded = true;
private void updateState()
{
float newSize = expanded ? ExpandedSize : CollapsedSize;
Easing easingType = expanded ? Easing.OutElastic : Easing.Out;
if (RelativeSizeAxes == Axes.X)
this.ResizeHeightTo(newSize, 400, easingType);
else
this.ResizeWidthTo(newSize, 400, easingType);
this.FadeTo(expanded ? 1 : 0.5f, 100, Easing.OutQuint);
}
}
}