osu/osu.Game/Graphics/UserInterface/OsuSliderBar.cs

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// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using OpenTK;
using OpenTK.Input;
using osu.Framework.Allocation;
using osu.Framework.Audio;
using osu.Framework.Audio.Sample;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Sprites;
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using osu.Framework.Graphics.Transforms;
using osu.Framework.Graphics.UserInterface;
using osu.Framework.Input;
namespace osu.Game.Graphics.UserInterface
{
public class OsuSliderBar<U> : SliderBar<U> where U : struct
{
private SampleChannel sample;
private double lastSampleTime;
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private Nub nub;
private Box leftBox, rightBox;
public OsuSliderBar()
{
Height = 12;
RangePadding = 20;
Children = new Drawable[]
{
leftBox = new Box
{
Height = 2,
EdgeSmoothness = new Vector2(0, 0.5f),
Position = new Vector2(2, 0),
RelativeSizeAxes = Axes.None,
Anchor = Anchor.CentreLeft,
Origin = Anchor.CentreLeft,
},
rightBox = new Box
{
Height = 2,
EdgeSmoothness = new Vector2(0, 0.5f),
Position = new Vector2(-2, 0),
RelativeSizeAxes = Axes.None,
Anchor = Anchor.CentreRight,
Origin = Anchor.CentreRight,
Alpha = 0.5f,
},
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nub = new Nub
{
Origin = Anchor.TopCentre,
State = CheckBoxState.Unchecked,
Expanded = true,
}
};
}
[BackgroundDependencyLoader]
private void load(AudioManager audio, OsuColour colours)
{
sample = audio.Sample.Get(@"Sliderbar/sliderbar");
leftBox.Colour = colours.Pink;
rightBox.Colour = colours.Pink;
}
private void playSample()
{
if (Clock == null || Clock.CurrentTime - lastSampleTime <= 50)
return;
lastSampleTime = Clock.CurrentTime;
sample.Frequency.Value = 1 + NormalizedValue * 0.2f;
sample.Play();
}
protected override bool OnHover(InputState state)
{
nub.Glowing = true;
return base.OnHover(state);
}
protected override void OnHoverLost(InputState state)
{
nub.Glowing = false;
base.OnHoverLost(state);
}
protected override bool OnKeyDown(InputState state, KeyDownEventArgs args)
{
if (args.Key == Key.Left || args.Key == Key.Right)
playSample();
return base.OnKeyDown(state, args);
}
protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
{
nub.State = CheckBoxState.Checked;
return base.OnMouseDown(state, args);
}
protected override bool OnMouseUp(InputState state, MouseUpEventArgs args)
{
nub.State = CheckBoxState.Unchecked;
return base.OnMouseUp(state, args);
}
protected override bool OnClick(InputState state)
{
playSample();
return base.OnClick(state);
}
protected override bool OnDrag(InputState state)
{
playSample();
return base.OnDrag(state);
}
protected override void UpdateAfterChildren()
{
base.UpdateAfterChildren();
leftBox.Scale = new Vector2(MathHelper.Clamp(
nub.DrawPosition.X - nub.DrawWidth / 2, 0, DrawWidth), 1);
rightBox.Scale = new Vector2(MathHelper.Clamp(
DrawWidth - nub.DrawPosition.X - nub.DrawWidth / 2, 0, DrawWidth), 1);
}
protected override void UpdateValue(float value)
{
nub.MoveToX(RangePadding + UsableWidth * value, 250, EasingTypes.OutQuint);
}
}
}