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osu-lazer/osu.Game.Tournament/Screens/Ladder/LadderDragContainer.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 osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Primitives;
using osu.Framework.Input.Events;
using osuTK;
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namespace osu.Game.Tournament.Screens.Ladder
{
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public class LadderDragContainer : Container
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{
protected override bool OnDragStart(DragStartEvent e) => true;
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public override bool ReceivePositionalInputAt(Vector2 screenSpacePos) => true;
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private Vector2 target;
private float scale = 1;
protected override bool ComputeIsMaskedAway(RectangleF maskingBounds) => false;
public override bool UpdateSubTreeMasking(Drawable source, RectangleF maskingBounds) => false;
protected override void OnDrag(DragEvent e)
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{
this.MoveTo(target += e.Delta, 1000, Easing.OutQuint);
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}
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private const float min_scale = 0.6f;
private const float max_scale = 1.4f;
protected override bool OnScroll(ScrollEvent e)
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{
float newScale = Math.Clamp(scale + e.ScrollDelta.Y / 15 * scale, min_scale, max_scale);
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this.MoveTo(target -= e.MousePosition * (newScale - scale), 2000, Easing.OutQuint);
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this.ScaleTo(scale = newScale, 2000, Easing.OutQuint);
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return true;
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}
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}
}