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106 lines
3.2 KiB
C#
106 lines
3.2 KiB
C#
// Copyright (c) 2007-2017 ppy Pty Ltd <contact@ppy.sh>.
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// Licensed under the MIT Licence - https://raw.githubusercontent.com/ppy/osu/master/LICENCE
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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.Primitives;
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using osu.Framework.Graphics.Shapes;
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using osu.Framework.Input;
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using osu.Game.Graphics;
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using OpenTK;
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using OpenTK.Graphics;
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namespace osu.Game.Rulesets.Edit.Layers.Selection
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{
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/// <summary>
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/// Represents a marker visible on the border of a <see cref="HandleContainer"/> which exposes
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/// properties that are used to resize a <see cref="HitObjectSelectionBox"/>.
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/// </summary>
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public class Handle : CompositeDrawable
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{
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private const float marker_size = 10;
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/// <summary>
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/// Invoked when this <see cref="Handle"/> requires the current drag rectangle.
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/// </summary>
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public Func<RectangleF> GetDragRectangle;
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/// <summary>
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/// Invoked when this <see cref="Handle"/> wants to update the drag rectangle.
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/// </summary>
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public Action<RectangleF> UpdateDragRectangle;
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/// <summary>
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/// Invoked when this <see cref="Handle"/> has finished updates to the drag rectangle.
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/// </summary>
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public Action FinishCapture;
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private Color4 normalColour;
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private Color4 hoverColour;
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public Handle()
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{
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Size = new Vector2(marker_size);
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InternalChild = new CircularContainer
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{
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RelativeSizeAxes = Axes.Both,
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Masking = true,
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Child = new Box { RelativeSizeAxes = Axes.Both }
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};
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}
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[BackgroundDependencyLoader]
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private void load(OsuColour colours)
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{
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Colour = normalColour = colours.Yellow;
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hoverColour = colours.YellowDarker;
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}
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protected override bool OnDragStart(InputState state) => true;
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protected override bool OnDrag(InputState state)
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{
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var currentRectangle = GetDragRectangle();
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float left = currentRectangle.Left;
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float right = currentRectangle.Right;
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float top = currentRectangle.Top;
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float bottom = currentRectangle.Bottom;
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// Apply modifications to the capture rectangle
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if ((Anchor & Anchor.y0) > 0)
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top += state.Mouse.Delta.Y;
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else if ((Anchor & Anchor.y2) > 0)
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bottom += state.Mouse.Delta.Y;
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if ((Anchor & Anchor.x0) > 0)
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left += state.Mouse.Delta.X;
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else if ((Anchor & Anchor.x2) > 0)
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right += state.Mouse.Delta.X;
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UpdateDragRectangle(RectangleF.FromLTRB(left, top, right, bottom));
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return true;
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}
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protected override bool OnDragEnd(InputState state)
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{
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FinishCapture();
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return true;
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}
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protected override bool OnHover(InputState state)
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{
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this.FadeColour(hoverColour, 100);
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return true;
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}
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protected override void OnHoverLost(InputState state)
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{
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this.FadeColour(normalColour, 100);
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}
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}
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}
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