2019-01-24 08:43:03 +00:00
|
|
|
|
// 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.
|
2018-04-13 09:19:50 +00:00
|
|
|
|
|
|
|
|
|
using System;
|
|
|
|
|
using System.Linq;
|
2019-02-21 10:04:31 +00:00
|
|
|
|
using osu.Framework.Bindables;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
using osu.Framework.Graphics;
|
|
|
|
|
using osu.Framework.Graphics.Containers;
|
2020-02-26 06:06:30 +00:00
|
|
|
|
using osu.Framework.Layout;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
|
|
|
|
|
namespace osu.Game.Graphics.Containers
|
|
|
|
|
{
|
|
|
|
|
/// <summary>
|
|
|
|
|
/// A container that can scroll to each section inside it.
|
|
|
|
|
/// </summary>
|
|
|
|
|
public class SectionsContainer<T> : Container<T>
|
|
|
|
|
where T : Drawable
|
|
|
|
|
{
|
|
|
|
|
private Drawable expandableHeader, fixedHeader, footer, headerBackground;
|
2019-06-14 06:55:32 +00:00
|
|
|
|
private readonly OsuScrollContainer scrollContainer;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
private readonly Container headerBackgroundContainer;
|
|
|
|
|
private readonly FlowContainer<T> scrollContentContainer;
|
|
|
|
|
|
|
|
|
|
protected override Container<T> Content => scrollContentContainer;
|
|
|
|
|
|
|
|
|
|
public Drawable ExpandableHeader
|
|
|
|
|
{
|
2019-02-28 04:58:19 +00:00
|
|
|
|
get => expandableHeader;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
set
|
|
|
|
|
{
|
|
|
|
|
if (value == expandableHeader) return;
|
|
|
|
|
|
|
|
|
|
expandableHeader?.Expire();
|
|
|
|
|
expandableHeader = value;
|
|
|
|
|
if (value == null) return;
|
|
|
|
|
|
|
|
|
|
AddInternal(expandableHeader);
|
|
|
|
|
lastKnownScroll = float.NaN;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public Drawable FixedHeader
|
|
|
|
|
{
|
2019-02-28 04:58:19 +00:00
|
|
|
|
get => fixedHeader;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
set
|
|
|
|
|
{
|
|
|
|
|
if (value == fixedHeader) return;
|
|
|
|
|
|
|
|
|
|
fixedHeader?.Expire();
|
|
|
|
|
fixedHeader = value;
|
|
|
|
|
if (value == null) return;
|
|
|
|
|
|
|
|
|
|
AddInternal(fixedHeader);
|
|
|
|
|
lastKnownScroll = float.NaN;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public Drawable Footer
|
|
|
|
|
{
|
2019-02-28 04:58:19 +00:00
|
|
|
|
get => footer;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
set
|
|
|
|
|
{
|
|
|
|
|
if (value == footer) return;
|
|
|
|
|
|
|
|
|
|
if (footer != null)
|
|
|
|
|
scrollContainer.Remove(footer);
|
|
|
|
|
footer = value;
|
|
|
|
|
if (value == null) return;
|
|
|
|
|
|
|
|
|
|
footer.Anchor |= Anchor.y2;
|
|
|
|
|
footer.Origin |= Anchor.y2;
|
|
|
|
|
scrollContainer.Add(footer);
|
|
|
|
|
lastKnownScroll = float.NaN;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public Drawable HeaderBackground
|
|
|
|
|
{
|
2019-02-28 04:58:19 +00:00
|
|
|
|
get => headerBackground;
|
2018-04-13 09:19:50 +00:00
|
|
|
|
set
|
|
|
|
|
{
|
|
|
|
|
if (value == headerBackground) return;
|
|
|
|
|
|
|
|
|
|
headerBackgroundContainer.Clear();
|
|
|
|
|
headerBackground = value;
|
|
|
|
|
if (value == null) return;
|
|
|
|
|
|
|
|
|
|
headerBackgroundContainer.Add(headerBackground);
|
|
|
|
|
|
|
|
|
|
lastKnownScroll = float.NaN;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public Bindable<T> SelectedSection { get; } = new Bindable<T>();
|
|
|
|
|
|
|
|
|
|
protected virtual FlowContainer<T> CreateScrollContentContainer()
|
|
|
|
|
=> new FillFlowContainer<T>
|
|
|
|
|
{
|
|
|
|
|
Direction = FillDirection.Vertical,
|
|
|
|
|
AutoSizeAxes = Axes.Y,
|
|
|
|
|
RelativeSizeAxes = Axes.X,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
public override void Add(T drawable)
|
|
|
|
|
{
|
|
|
|
|
base.Add(drawable);
|
|
|
|
|
lastKnownScroll = float.NaN;
|
|
|
|
|
headerHeight = float.NaN;
|
|
|
|
|
footerHeight = float.NaN;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private float headerHeight, footerHeight;
|
|
|
|
|
private readonly MarginPadding originalSectionsMargin;
|
2019-02-28 04:31:40 +00:00
|
|
|
|
|
2018-04-13 09:19:50 +00:00
|
|
|
|
private void updateSectionsMargin()
|
|
|
|
|
{
|
|
|
|
|
if (!Children.Any()) return;
|
|
|
|
|
|
|
|
|
|
var newMargin = originalSectionsMargin;
|
|
|
|
|
newMargin.Top += headerHeight;
|
|
|
|
|
newMargin.Bottom += footerHeight;
|
|
|
|
|
|
|
|
|
|
scrollContentContainer.Margin = newMargin;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public SectionsContainer()
|
|
|
|
|
{
|
2019-06-14 06:55:32 +00:00
|
|
|
|
AddInternal(scrollContainer = new OsuScrollContainer
|
2018-04-13 09:19:50 +00:00
|
|
|
|
{
|
|
|
|
|
RelativeSizeAxes = Axes.Both,
|
|
|
|
|
Masking = true,
|
|
|
|
|
ScrollbarVisible = false,
|
|
|
|
|
Children = new Drawable[] { scrollContentContainer = CreateScrollContentContainer() }
|
|
|
|
|
});
|
|
|
|
|
AddInternal(headerBackgroundContainer = new Container
|
|
|
|
|
{
|
|
|
|
|
RelativeSizeAxes = Axes.X
|
|
|
|
|
});
|
|
|
|
|
originalSectionsMargin = scrollContentContainer.Margin;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
public void ScrollTo(Drawable section) => scrollContainer.ScrollTo(scrollContainer.GetChildPosInContent(section) - (FixedHeader?.BoundingBox.Height ?? 0));
|
|
|
|
|
|
|
|
|
|
public void ScrollToTop() => scrollContainer.ScrollTo(0);
|
|
|
|
|
|
2020-02-26 06:06:30 +00:00
|
|
|
|
protected override bool OnInvalidate(Invalidation invalidation, InvalidationSource source)
|
2018-12-22 20:50:25 +00:00
|
|
|
|
{
|
2020-02-26 06:06:30 +00:00
|
|
|
|
var result = base.OnInvalidate(invalidation, source);
|
2018-12-22 20:50:25 +00:00
|
|
|
|
|
2020-02-26 06:06:30 +00:00
|
|
|
|
if (source == InvalidationSource.Child && (invalidation & Invalidation.DrawSize) != 0)
|
2018-12-22 20:50:25 +00:00
|
|
|
|
{
|
2020-02-26 06:06:30 +00:00
|
|
|
|
lastKnownScroll = -1;
|
|
|
|
|
result = true;
|
2018-12-22 20:50:25 +00:00
|
|
|
|
}
|
2020-02-26 06:06:30 +00:00
|
|
|
|
|
|
|
|
|
return result;
|
2018-12-22 20:50:25 +00:00
|
|
|
|
}
|
|
|
|
|
|
2018-04-13 09:19:50 +00:00
|
|
|
|
private float lastKnownScroll;
|
2019-02-28 04:31:40 +00:00
|
|
|
|
|
2018-04-13 09:19:50 +00:00
|
|
|
|
protected override void UpdateAfterChildren()
|
|
|
|
|
{
|
|
|
|
|
base.UpdateAfterChildren();
|
|
|
|
|
|
|
|
|
|
float headerH = (ExpandableHeader?.LayoutSize.Y ?? 0) + (FixedHeader?.LayoutSize.Y ?? 0);
|
|
|
|
|
float footerH = Footer?.LayoutSize.Y ?? 0;
|
2019-04-01 03:16:05 +00:00
|
|
|
|
|
2018-04-13 09:19:50 +00:00
|
|
|
|
if (headerH != headerHeight || footerH != footerHeight)
|
|
|
|
|
{
|
|
|
|
|
headerHeight = headerH;
|
|
|
|
|
footerHeight = footerH;
|
|
|
|
|
updateSectionsMargin();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
float currentScroll = scrollContainer.Current;
|
|
|
|
|
|
|
|
|
|
if (currentScroll != lastKnownScroll)
|
|
|
|
|
{
|
|
|
|
|
lastKnownScroll = currentScroll;
|
|
|
|
|
|
|
|
|
|
if (ExpandableHeader != null && FixedHeader != null)
|
|
|
|
|
{
|
|
|
|
|
float offset = Math.Min(ExpandableHeader.LayoutSize.Y, currentScroll);
|
|
|
|
|
|
|
|
|
|
ExpandableHeader.Y = -offset;
|
|
|
|
|
FixedHeader.Y = -offset + ExpandableHeader.LayoutSize.Y;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
headerBackgroundContainer.Height = (ExpandableHeader?.LayoutSize.Y ?? 0) + (FixedHeader?.LayoutSize.Y ?? 0);
|
|
|
|
|
headerBackgroundContainer.Y = ExpandableHeader?.Y ?? 0;
|
|
|
|
|
|
|
|
|
|
T bestMatch = null;
|
|
|
|
|
float minDiff = float.MaxValue;
|
|
|
|
|
float scrollOffset = FixedHeader?.LayoutSize.Y ?? 0;
|
|
|
|
|
|
|
|
|
|
foreach (var section in Children)
|
|
|
|
|
{
|
|
|
|
|
float diff = Math.Abs(scrollContainer.GetChildPosInContent(section) - currentScroll - scrollOffset);
|
2019-04-01 03:16:05 +00:00
|
|
|
|
|
2018-04-13 09:19:50 +00:00
|
|
|
|
if (diff < minDiff)
|
|
|
|
|
{
|
|
|
|
|
minDiff = diff;
|
|
|
|
|
bestMatch = section;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (bestMatch != null)
|
|
|
|
|
SelectedSection.Value = bestMatch;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|