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100 lines
2.8 KiB
C#
100 lines
2.8 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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#nullable disable
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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.Containers;
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using osu.Framework.Graphics.Shapes;
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using osu.Framework.Input.Events;
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using osu.Game.Graphics;
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namespace osu.Game.Screens.Edit.Compose.Components
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{
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/// <summary>
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/// Represents the base appearance for UI controls of the <see cref="SelectionBox"/>,
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/// such as scale handles, rotation handles, buttons, etc...
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/// </summary>
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public abstract partial class SelectionBoxControl : CompositeDrawable
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{
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public const double TRANSFORM_DURATION = 100;
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public event Action OperationStarted;
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public event Action OperationEnded;
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protected Circle Circle { get; private set; }
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/// <summary>
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/// Whether the user is currently holding the control with mouse.
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/// </summary>
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public bool IsHeld { get; private set; }
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[Resolved]
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protected OsuColour Colours { get; private set; }
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[BackgroundDependencyLoader]
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private void load()
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{
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Origin = Anchor.Centre;
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InternalChildren = new Drawable[]
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{
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Circle = new Circle
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{
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RelativeSizeAxes = Axes.Both,
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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},
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};
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}
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protected override void LoadComplete()
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{
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base.LoadComplete();
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UpdateHoverState();
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FinishTransforms(true);
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}
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protected override bool OnHover(HoverEvent e)
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{
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UpdateHoverState();
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return true;
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}
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protected override void OnHoverLost(HoverLostEvent e)
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{
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UpdateHoverState();
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}
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protected override bool OnMouseDown(MouseDownEvent e)
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{
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IsHeld = true;
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UpdateHoverState();
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return true;
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}
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protected override void OnMouseUp(MouseUpEvent e)
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{
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IsHeld = false;
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UpdateHoverState();
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}
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protected virtual void UpdateHoverState()
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{
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if (IsHeld)
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Circle.FadeColour(Colours.GrayF, TRANSFORM_DURATION, Easing.OutQuint);
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else
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Circle.FadeColour(IsHovered ? Colours.Red : Colours.YellowDark, TRANSFORM_DURATION, Easing.OutQuint);
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this.ScaleTo(IsHeld || IsHovered ? 1.5f : 1, TRANSFORM_DURATION, Easing.OutQuint);
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}
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protected void TriggerOperationStarted() => OperationStarted?.Invoke();
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protected void TriggerOperationEnded() => OperationEnded?.Invoke();
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}
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}
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