mirror of
https://github.com/ppy/osu.git
synced 2024-12-18 08:02:54 +08:00
172 lines
6.2 KiB
C#
172 lines
6.2 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 System;
|
|
using System.ComponentModel;
|
|
using osu.Framework.Allocation;
|
|
using osu.Framework.Bindables;
|
|
using osu.Framework.Extensions.Color4Extensions;
|
|
using osu.Framework.Graphics;
|
|
using osu.Framework.Graphics.Colour;
|
|
using osu.Framework.Graphics.Containers;
|
|
using osu.Framework.Graphics.Shapes;
|
|
using osu.Framework.Utils;
|
|
using osu.Game.Rulesets.UI.Scrolling;
|
|
using osuTK;
|
|
using osuTK.Graphics;
|
|
using Container = osu.Framework.Graphics.Containers.Container;
|
|
|
|
namespace osu.Game.Rulesets.Mania.UI
|
|
{
|
|
/// <summary>
|
|
/// A <see cref="Framework.Graphics.Containers.Container"/> that has its contents partially hidden by an adjustable "cover". This is intended to be used in a playfield.
|
|
/// </summary>
|
|
public partial class PlayfieldCoveringWrapper : CompositeDrawable
|
|
{
|
|
/// <summary>
|
|
/// The relative area that should be completely covered. This does not include the fade.
|
|
/// </summary>
|
|
public readonly BindableFloat Coverage = new BindableFloat();
|
|
|
|
/// <summary>
|
|
/// The complete cover, including gradient and fill.
|
|
/// </summary>
|
|
private readonly Drawable cover;
|
|
|
|
/// <summary>
|
|
/// The gradient portion of the cover.
|
|
/// </summary>
|
|
private readonly Box gradient;
|
|
|
|
/// <summary>
|
|
/// The fully-opaque portion of the cover.
|
|
/// </summary>
|
|
private readonly Box filled;
|
|
|
|
private readonly IBindable<ScrollingDirection> scrollDirection = new Bindable<ScrollingDirection>();
|
|
|
|
private float currentCoverageHeight;
|
|
|
|
public PlayfieldCoveringWrapper(Drawable content)
|
|
{
|
|
InternalChild = new BufferedContainer
|
|
{
|
|
RelativeSizeAxes = Axes.Both,
|
|
Children = new[]
|
|
{
|
|
content,
|
|
cover = new Container
|
|
{
|
|
Anchor = Anchor.Centre,
|
|
Origin = Anchor.Centre,
|
|
RelativeSizeAxes = Axes.Both,
|
|
Blending = new BlendingParameters
|
|
{
|
|
// Don't change the destination colour.
|
|
RGBEquation = BlendingEquation.Add,
|
|
Source = BlendingType.Zero,
|
|
Destination = BlendingType.One,
|
|
// Subtract the cover's alpha from the destination (points with alpha 1 should make the destination completely transparent).
|
|
AlphaEquation = BlendingEquation.Add,
|
|
SourceAlpha = BlendingType.Zero,
|
|
DestinationAlpha = BlendingType.OneMinusSrcAlpha
|
|
},
|
|
Children = new Drawable[]
|
|
{
|
|
gradient = new Box
|
|
{
|
|
Anchor = Anchor.BottomLeft,
|
|
Origin = Anchor.BottomLeft,
|
|
RelativeSizeAxes = Axes.Both,
|
|
RelativePositionAxes = Axes.Both,
|
|
Height = 0.25f,
|
|
Colour = ColourInfo.GradientVertical(
|
|
Color4.White.Opacity(0f),
|
|
Color4.White.Opacity(1f)
|
|
)
|
|
},
|
|
filled = new Box
|
|
{
|
|
Anchor = Anchor.BottomLeft,
|
|
Origin = Anchor.BottomLeft,
|
|
RelativeSizeAxes = Axes.Both,
|
|
Height = 0
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
[BackgroundDependencyLoader]
|
|
private void load(IScrollingInfo scrollingInfo)
|
|
{
|
|
scrollDirection.BindTo(scrollingInfo.Direction);
|
|
scrollDirection.BindValueChanged(onScrollDirectionChanged, true);
|
|
}
|
|
|
|
protected override void LoadComplete()
|
|
{
|
|
base.LoadComplete();
|
|
updateCoverSize(true);
|
|
}
|
|
|
|
protected override void Update()
|
|
{
|
|
base.Update();
|
|
updateCoverSize(false);
|
|
}
|
|
|
|
private void updateCoverSize(bool instant)
|
|
{
|
|
float targetCoverage;
|
|
float targetAlpha;
|
|
|
|
if (instant)
|
|
{
|
|
targetCoverage = Coverage.Value;
|
|
targetAlpha = Coverage.Value > 0 ? 1 : 0;
|
|
}
|
|
else
|
|
{
|
|
targetCoverage = (float)Interpolation.DampContinuously(currentCoverageHeight, Coverage.Value, 25, Math.Abs(Time.Elapsed));
|
|
targetAlpha = (float)Interpolation.DampContinuously(gradient.Alpha, Coverage.Value > 0 ? 1 : 0, 25, Math.Abs(Time.Elapsed));
|
|
}
|
|
|
|
filled.Height = GetHeight(targetCoverage);
|
|
gradient.Y = -GetHeight(targetCoverage);
|
|
gradient.Alpha = targetAlpha;
|
|
|
|
currentCoverageHeight = targetCoverage;
|
|
}
|
|
|
|
protected virtual float GetHeight(float coverage) => coverage;
|
|
|
|
private void onScrollDirectionChanged(ValueChangedEvent<ScrollingDirection> direction)
|
|
=> cover.Rotation = direction.NewValue == ScrollingDirection.Up ? 0 : 180f;
|
|
|
|
/// <summary>
|
|
/// The direction in which the cover expands.
|
|
/// </summary>
|
|
public CoverExpandDirection Direction
|
|
{
|
|
set => cover.Scale = value == CoverExpandDirection.AlongScroll ? Vector2.One : new Vector2(1, -1);
|
|
}
|
|
}
|
|
|
|
public enum CoverExpandDirection
|
|
{
|
|
/// <summary>
|
|
/// The cover expands along the scrolling direction.
|
|
/// </summary>
|
|
[Description("Along scroll")]
|
|
AlongScroll,
|
|
|
|
/// <summary>
|
|
/// The cover expands against the scrolling direction.
|
|
/// </summary>
|
|
[Description("Against scroll")]
|
|
AgainstScroll
|
|
}
|
|
}
|