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957a0686ed
They got too big.
80 lines
2.7 KiB
C#
80 lines
2.7 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// 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.Allocation;
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Primitives;
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using osu.Framework.Graphics.Shapes;
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using osu.Framework.Input.Events;
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using osu.Framework.Utils;
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namespace osu.Game.Screens.Edit.Compose.Components.Timeline
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{
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public class TimelineDragBox : DragBox
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{
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// the following values hold the start and end X positions of the drag box in the timeline's local space,
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// but with zoom unapplied in order to be able to compensate for positional changes
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// while the timeline is being zoomed in/out.
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private float? selectionStart;
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private float selectionEnd;
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[Resolved]
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private Timeline timeline { get; set; }
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public TimelineDragBox(Action<RectangleF> performSelect)
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: base(performSelect)
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{
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}
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protected override Drawable CreateBox() => new Box
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{
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RelativeSizeAxes = Axes.Y,
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Alpha = 0.3f
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};
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public override bool HandleDrag(MouseButtonEvent e)
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{
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// The dragbox should only be active if the mouseDownPosition.Y is within this drawable's bounds.
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float localY = ToLocalSpace(e.ScreenSpaceMouseDownPosition).Y;
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if (DrawRectangle.Top > localY || DrawRectangle.Bottom < localY)
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return false;
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selectionStart ??= e.MouseDownPosition.X / timeline.CurrentZoom;
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// only calculate end when a transition is not in progress to avoid bouncing.
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if (Precision.AlmostEquals(timeline.CurrentZoom, timeline.Zoom))
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selectionEnd = e.MousePosition.X / timeline.CurrentZoom;
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updateDragBoxPosition();
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return true;
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}
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private void updateDragBoxPosition()
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{
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if (selectionStart == null)
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return;
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float rescaledStart = selectionStart.Value * timeline.CurrentZoom;
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float rescaledEnd = selectionEnd * timeline.CurrentZoom;
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Box.X = Math.Min(rescaledStart, rescaledEnd);
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Box.Width = Math.Abs(rescaledStart - rescaledEnd);
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var boxScreenRect = Box.ScreenSpaceDrawQuad.AABBFloat;
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// we don't care about where the hitobjects are vertically. in cases like stacking display, they may be outside the box without this adjustment.
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boxScreenRect.Y -= boxScreenRect.Height;
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boxScreenRect.Height *= 2;
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PerformSelection?.Invoke(boxScreenRect);
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}
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public override void Hide()
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{
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base.Hide();
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selectionStart = null;
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}
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}
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}
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