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osu-lazer/osu.Game/Screens/Edit/Compose/Components/SelectionBoxDragHandle.cs

106 lines
2.7 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.
using System;
using osu.Framework.Allocation;
using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Shapes;
using osu.Framework.Input.Events;
using osu.Game.Graphics;
using osuTK;
namespace osu.Game.Screens.Edit.Compose.Components
{
public class SelectionBoxDragHandle : Container
{
public Action OperationStarted;
public Action OperationEnded;
public Action<DragEvent> HandleDrag { get; set; }
private Circle circle;
[Resolved]
private OsuColour colours { get; set; }
[BackgroundDependencyLoader]
private void load()
{
Size = new Vector2(10);
Origin = Anchor.Centre;
InternalChildren = new Drawable[]
{
circle = new Circle
{
RelativeSizeAxes = Axes.Both,
Anchor = Anchor.Centre,
Origin = Anchor.Centre,
},
};
}
protected override void LoadComplete()
{
base.LoadComplete();
UpdateHoverState();
}
protected override bool OnHover(HoverEvent e)
{
UpdateHoverState();
return base.OnHover(e);
}
protected override void OnHoverLost(HoverLostEvent e)
{
base.OnHoverLost(e);
UpdateHoverState();
}
protected bool HandlingMouse;
protected override bool OnMouseDown(MouseDownEvent e)
{
HandlingMouse = true;
UpdateHoverState();
return true;
}
protected override bool OnDragStart(DragStartEvent e)
{
OperationStarted?.Invoke();
return true;
}
protected override void OnDrag(DragEvent e)
{
HandleDrag?.Invoke(e);
base.OnDrag(e);
}
protected override void OnDragEnd(DragEndEvent e)
{
HandlingMouse = false;
OperationEnded?.Invoke();
UpdateHoverState();
base.OnDragEnd(e);
}
protected override void OnMouseUp(MouseUpEvent e)
{
HandlingMouse = false;
UpdateHoverState();
base.OnMouseUp(e);
}
protected virtual void UpdateHoverState()
{
circle.Colour = HandlingMouse ? colours.GrayF : (IsHovered ? colours.Red : colours.YellowDark);
this.ScaleTo(HandlingMouse || IsHovered ? 1.5f : 1, 100, Easing.OutQuint);
}
}
}