mirror of
https://github.com/ppy/osu
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111 lines
3.0 KiB
C#
111 lines
3.0 KiB
C#
// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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using System;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Framework.Graphics.Sprites;
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using osu.Framework.Graphics.Transforms;
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using osu.Framework.Input;
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using OpenTK;
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namespace osu.Game.Overlays
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{
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public class DragBar : Container
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{
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protected readonly Container Fill;
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public Action<float> SeekRequested;
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public bool IsSeeking { get; private set; }
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private bool enabled = true;
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public bool IsEnabled
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{
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get { return enabled; }
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set
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{
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enabled = value;
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if (!enabled)
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Fill.Width = 0;
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}
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}
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public DragBar()
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{
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RelativeSizeAxes = Axes.X;
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Children = new Drawable[]
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{
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Fill = new Container
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{
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Name = "FillContainer",
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Origin = Anchor.BottomLeft,
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Anchor = Anchor.BottomLeft,
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RelativeSizeAxes = Axes.Both,
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Width = 0,
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Children = new Drawable[]
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{
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new Box
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{
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RelativeSizeAxes = Axes.Both
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}
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}
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}
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};
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}
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public void UpdatePosition(float position)
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{
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if (IsSeeking || !IsEnabled) return;
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updatePosition(position, false);
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}
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private void seek(InputState state)
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{
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float seekLocation = state.Mouse.Position.X / DrawWidth;
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if (!IsEnabled) return;
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SeekRequested?.Invoke(seekLocation);
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updatePosition(seekLocation);
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}
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private void updatePosition(float position, bool easing = true)
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{
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position = MathHelper.Clamp(position, 0, 1);
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Fill.TransformTo(() => Fill.Width, position, easing ? 200 : 0, EasingTypes.OutQuint, new TransformSeek());
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}
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protected override bool OnMouseDown(InputState state, MouseDownEventArgs args)
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{
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seek(state);
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return true;
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}
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protected override bool OnDrag(InputState state)
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{
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seek(state);
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return true;
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}
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protected override bool OnDragStart(InputState state) => IsSeeking = true;
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protected override bool OnDragEnd(InputState state)
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{
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IsSeeking = false;
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return true;
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}
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private class TransformSeek : TransformFloat
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{
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public override void Apply(Drawable d)
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{
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base.Apply(d);
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d.Width = CurrentValue;
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}
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}
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}
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}
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