osu/osu.Game/Overlays/DragBar.cs

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2016-10-27 09:58:33 +00:00
//Copyright (c) 2007-2016 ppy Pty Ltd <contact@ppy.sh>.
//Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
using System;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Input;
namespace osu.Game.Overlays
{
public class DragBar : Container
{
private Box fill;
public Action<float> SeekRequested;
private bool isDragging;
private bool enabled;
public bool IsEnabled
{
get { return enabled; }
set
{
enabled = value;
if (!enabled)
fill.Width = 0;
}
}
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public DragBar()
{
RelativeSizeAxes = Axes.X;
Children = new Drawable[]
{
fill = new Box()
{
Origin = Anchor.CentreLeft,
Anchor = Anchor.CentreLeft,
RelativeSizeAxes = Axes.Both,
Width = 0
}
};
}
public void UpdatePosition(float position)
{
if (isDragging || !IsEnabled) return;
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fill.Width = position;
}
private void seek(InputState state)
{
if (!IsEnabled) return;
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float seekLocation = state.Mouse.Position.X / DrawWidth;
SeekRequested?.Invoke(seekLocation);
fill.Width = seekLocation;
}
protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
{
seek(state);
return true;
}
protected override bool OnDrag(InputState state)
{
seek(state);
return true;
}
protected override bool OnDragStart(InputState state) => isDragging = true;
protected override bool OnDragEnd(InputState state)
{
isDragging = false;
return true;
}
}
}