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osu-lazer/osu.Game/Beatmaps/Drawables/Cards/ExpandedContentScrollContainer.cs
2023-06-24 01:00:03 +09:00

80 lines
2.2 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.Graphics;
using osu.Framework.Input.Events;
using osu.Framework.Utils;
using osu.Game.Graphics.Containers;
namespace osu.Game.Beatmaps.Drawables.Cards
{
public partial class ExpandedContentScrollContainer : OsuScrollContainer
{
public const float HEIGHT = 200;
protected override ScrollbarContainer CreateScrollbar(Direction direction) => new ExpandedContentScrollbar(direction);
protected override void Update()
{
base.Update();
Height = Math.Min(Content.DrawHeight, HEIGHT);
ScrollbarVisible = allowScroll;
}
private bool allowScroll => !Precision.AlmostEquals(DrawSize, Content.DrawSize);
protected override bool OnDragStart(DragStartEvent e)
{
if (!allowScroll)
return false;
return base.OnDragStart(e);
}
protected override void OnDrag(DragEvent e)
{
if (!allowScroll)
return;
base.OnDrag(e);
}
protected override void OnDragEnd(DragEndEvent e)
{
if (!allowScroll)
return;
base.OnDragEnd(e);
}
protected override bool OnScroll(ScrollEvent e)
{
if (!allowScroll)
return false;
return base.OnScroll(e);
}
protected override bool OnClick(ClickEvent e) => true;
private partial class ExpandedContentScrollbar : OsuScrollbar
{
public ExpandedContentScrollbar(Direction scrollDir)
: base(scrollDir)
{
}
protected override bool OnHover(HoverEvent e)
{
base.OnHover(e);
// do not handle hover, as handling hover would make the beatmap card's expanded content not-hovered
// and therefore cause it to hide when trying to drag the scroll bar.
// see: `BeatmapCardContent.dropdownContent` and its `Unhovered` handler.
return false;
}
}
}
}