osu/osu.Game/Graphics/UserInterface/Bar.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;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
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namespace osu.Game.Graphics.UserInterface
{
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public class Bar : Container, IHasAccentColour
{
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private readonly Box background;
private readonly Box bar;
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private const int resize_duration = 250;
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private const Easing easing = Easing.InOutCubic;
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private float length;
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/// <summary>
/// Length of the bar, ranges from 0 to 1
/// </summary>
public float Length
{
get => length;
set
{
length = Math.Clamp(value, 0, 1);
updateBarLength();
}
}
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public Color4 BackgroundColour
{
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get => background.Colour;
set => background.Colour = value;
}
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public Color4 AccentColour
{
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get => bar.Colour;
set => bar.Colour = value;
}
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private BarDirection direction = BarDirection.LeftToRight;
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public BarDirection Direction
{
get => direction;
set
{
direction = value;
updateBarLength();
}
}
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public Bar()
{
Children = new[]
{
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background = new Box
{
RelativeSizeAxes = Axes.Both,
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Colour = new Color4(0, 0, 0, 0)
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},
bar = new Box
{
RelativeSizeAxes = Axes.Both,
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Width = 0,
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},
};
}
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private void updateBarLength()
{
switch (direction)
{
case BarDirection.LeftToRight:
case BarDirection.RightToLeft:
bar.ResizeTo(new Vector2(length, 1), resize_duration, easing);
break;
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case BarDirection.TopToBottom:
case BarDirection.BottomToTop:
bar.ResizeTo(new Vector2(1, length), resize_duration, easing);
break;
}
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switch (direction)
{
case BarDirection.LeftToRight:
case BarDirection.TopToBottom:
bar.Anchor = Anchor.TopLeft;
bar.Origin = Anchor.TopLeft;
break;
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case BarDirection.RightToLeft:
case BarDirection.BottomToTop:
bar.Anchor = Anchor.BottomRight;
bar.Origin = Anchor.BottomRight;
break;
}
}
}
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[Flags]
public enum BarDirection
{
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LeftToRight = 1,
RightToLeft = 1 << 1,
TopToBottom = 1 << 2,
BottomToTop = 1 << 3,
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Vertical = TopToBottom | BottomToTop,
Horizontal = LeftToRight | RightToLeft,
}
}