osu/osu.Game/Screens/Edit/Compose/Components/SelectionBoxRotationHandle.cs
2022-06-17 16:37:17 +09:00

109 lines
3.5 KiB
C#

// 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.
#nullable disable
using System;
using osu.Framework.Allocation;
using osu.Framework.Bindables;
using osu.Framework.Extensions.EnumExtensions;
using osu.Framework.Extensions.LocalisationExtensions;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Cursor;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Input.Events;
using osu.Framework.Localisation;
using osuTK;
using osuTK.Graphics;
namespace osu.Game.Screens.Edit.Compose.Components
{
public class SelectionBoxRotationHandle : SelectionBoxDragHandle, IHasTooltip
{
public Action<float> HandleRotate { get; set; }
public LocalisableString TooltipText { get; private set; }
private SpriteIcon icon;
private readonly Bindable<float?> cumulativeRotation = new Bindable<float?>();
[Resolved]
private SelectionBox selectionBox { get; set; }
[BackgroundDependencyLoader]
private void load()
{
Size = new Vector2(15f);
AddInternal(icon = new SpriteIcon
{
RelativeSizeAxes = Axes.Both,
Size = new Vector2(0.5f),
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
Icon = FontAwesome.Solid.Redo,
Scale = new Vector2
{
X = Anchor.HasFlagFast(Anchor.x0) ? 1f : -1f,
Y = Anchor.HasFlagFast(Anchor.y0) ? 1f : -1f
}
});
}
protected override void LoadComplete()
{
base.LoadComplete();
cumulativeRotation.BindValueChanged(_ => updateTooltipText(), true);
}
protected override void UpdateHoverState()
{
base.UpdateHoverState();
icon.FadeColour(!IsHeld && IsHovered ? Color4.White : Color4.Black, TRANSFORM_DURATION, Easing.OutQuint);
}
protected override bool OnDragStart(DragStartEvent e)
{
bool handle = base.OnDragStart(e);
if (handle)
cumulativeRotation.Value = 0;
return handle;
}
protected override void OnDrag(DragEvent e)
{
base.OnDrag(e);
float instantaneousAngle = convertDragEventToAngleOfRotation(e);
cumulativeRotation.Value += instantaneousAngle;
if (cumulativeRotation.Value < -180)
cumulativeRotation.Value += 360;
else if (cumulativeRotation.Value > 180)
cumulativeRotation.Value -= 360;
HandleRotate?.Invoke(instantaneousAngle);
}
protected override void OnDragEnd(DragEndEvent e)
{
base.OnDragEnd(e);
cumulativeRotation.Value = null;
}
private float convertDragEventToAngleOfRotation(DragEvent e)
{
// Adjust coordinate system to the center of SelectionBox
float startAngle = MathF.Atan2(e.LastMousePosition.Y - selectionBox.DrawHeight / 2, e.LastMousePosition.X - selectionBox.DrawWidth / 2);
float endAngle = MathF.Atan2(e.MousePosition.Y - selectionBox.DrawHeight / 2, e.MousePosition.X - selectionBox.DrawWidth / 2);
return (endAngle - startAngle) * 180 / MathF.PI;
}
private void updateTooltipText()
{
TooltipText = cumulativeRotation.Value?.ToLocalisableString("0.0°") ?? default;
}
}
}