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Add footer support.

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This commit is contained in:
Huo Yaoyuan 2017-05-21 03:44:03 +08:00
parent 201b44dbf1
commit 93668e53a0
1 changed files with 33 additions and 13 deletions
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46
osu.Game/Graphics/Containers/SectionsContainer.cs
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@ -15,7 +15,7 @@ namespace osu.Game.Graphics.Containers
/// </summary>
public class SectionsContainer : Container
{
private Drawable expandableHeader, fixedHeader;
private Drawable expandableHeader, fixedHeader, footer;
public readonly ScrollContainer ScrollContainer;
private readonly Container<Drawable> sectionsContainer;
@ -31,7 +31,6 @@ namespace osu.Game.Graphics.Containers
expandableHeader = value;
if (value == null) return;
expandableHeader.Depth = float.MinValue;
Add(expandableHeader);
lastKnownScroll = float.NaN;
}
@ -49,12 +48,30 @@ namespace osu.Game.Graphics.Containers
fixedHeader = value;
if (value == null) return;
fixedHeader.Depth = float.MinValue / 2;
Add(fixedHeader);
lastKnownScroll = float.NaN;
}
}
public Drawable Footer
{
get { return footer; }
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 Bindable<Drawable> SelectedSection { get; } = new Bindable<Drawable>();
protected virtual Container<Drawable> CreateScrollContentContainer()
@ -78,23 +95,23 @@ namespace osu.Game.Graphics.Containers
sections = value.ToList();
if (sections.Count == 0) return;
originalSectionMargin = sections[0].Margin;
sectionsContainer.Add(sections);
SelectedSection.Value = sections[0];
lastKnownScroll = float.NaN;
}
}
float headerHeight;
private MarginPadding originalSectionMargin;
private void updateSectionMargin()
private float headerHeight, footerHeight;
private MarginPadding originalSectionsMargin;
private void updateSectionsMargin()
{
if (sections.Count == 0) return;
var newMargin = originalSectionMargin;
var newMargin = originalSectionsMargin;
newMargin.Top += headerHeight;
newMargin.Bottom += footerHeight;
sections[0].Margin = newMargin;
sectionsContainer.Margin = newMargin;
}
public SectionsContainer()
@ -105,6 +122,7 @@ namespace osu.Game.Graphics.Containers
Masking = false,
Children = new Drawable[] { sectionsContainer = CreateScrollContentContainer() }
});
originalSectionsMargin = sectionsContainer.Margin;
}
float lastKnownScroll;
@ -112,11 +130,13 @@ namespace osu.Game.Graphics.Containers
{
base.UpdateAfterChildren();
float height = (ExpandableHeader?.Height ?? 0) + (FixedHeader?.Height ?? 0);
if (height != headerHeight)
float headerHeight = (ExpandableHeader?.Height ?? 0) + (FixedHeader?.Height ?? 0);
float footerHeight = Footer?.Height ?? 0;
if (headerHeight != this.headerHeight || footerHeight != this.footerHeight)
{
headerHeight = height;
updateSectionMargin();
this.headerHeight = headerHeight;
this.footerHeight = footerHeight;
updateSectionsMargin();
}
float currentScroll = ScrollContainer.Current;