osu/osu.Game/Screens/Play/SongProgressBar.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 osuTK;
using osuTK.Graphics;
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using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Shapes;
using osu.Framework.Graphics.UserInterface;
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using osu.Framework.MathUtils;
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using osu.Framework.Threading;
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namespace osu.Game.Screens.Play
{
public class SongProgressBar : SliderBar<double>
{
public Action<double> OnSeek;
private readonly Box fill;
private readonly Container handleBase;
public Color4 FillColour
{
set => fill.Colour = value;
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}
public double StartTime
{
set => CurrentNumber.MinValue = value;
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}
public double EndTime
{
set => CurrentNumber.MaxValue = value;
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}
public double CurrentTime
{
set => CurrentNumber.Value = value;
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}
public SongProgressBar(float barHeight, float handleBarHeight, Vector2 handleSize)
{
CurrentNumber.MinValue = 0;
CurrentNumber.MaxValue = 1;
RelativeSizeAxes = Axes.X;
Height = barHeight + handleBarHeight + handleSize.Y;
Children = new Drawable[]
{
new Box
{
Name = "Background",
Anchor = Anchor.BottomLeft,
Origin = Anchor.BottomLeft,
RelativeSizeAxes = Axes.X,
Height = barHeight,
Colour = Color4.Black,
Alpha = 0.5f,
Depth = 1,
},
fill = new Box
{
Name = "Fill",
Anchor = Anchor.BottomLeft,
Origin = Anchor.BottomLeft,
Height = barHeight,
},
handleBase = new Container
{
Name = "HandleBar container",
Origin = Anchor.BottomLeft,
Anchor = Anchor.BottomLeft,
Width = 2,
Height = barHeight + handleBarHeight,
Colour = Color4.White,
Position = new Vector2(2, 0),
Children = new Drawable[]
{
new Box
{
Name = "HandleBar box",
RelativeSizeAxes = Axes.Both,
},
new Container
{
Name = "Handle container",
Origin = Anchor.BottomCentre,
Anchor = Anchor.TopCentre,
Size = handleSize,
CornerRadius = 5,
Masking = true,
Children = new Drawable[]
{
new Box
{
Name = "Handle box",
RelativeSizeAxes = Axes.Both,
Colour = Color4.White
}
}
}
}
}
};
}
protected override void UpdateValue(float value)
{
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// handled in update
}
protected override void Update()
{
base.Update();
float newX = (float)Interpolation.Lerp(handleBase.X, NormalizedValue * UsableWidth, Math.Clamp(Time.Elapsed / 40, 0, 1));
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fill.Width = newX;
handleBase.X = newX;
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}
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private ScheduledDelegate scheduledSeek;
protected override void OnUserChange(double value)
{
scheduledSeek?.Cancel();
scheduledSeek = Schedule(() => OnSeek?.Invoke(value));
}
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}
}