Widget _build(BuildContext context, BoxConstraints constraints)
{
Size size = constraints.biggest;
float?tColumnToRow =
1.0f - ((size.height - this.midHeight) /
(this.maxHeight - this.midHeight))?.clamp(0.0f, 1.0f);
float?tCollapsed =
1.0f - ((size.height - this.minHeight) /
(this.midHeight - this.minHeight))?.clamp(0.0f, 1.0f);
float _indicatorOpacity(int index)
{
return(1.0f - this._selectedIndexDelta(index) * 0.5f);
}
float?_titleOpacity(int index)
{
return(1.0f - this._selectedIndexDelta(index) * tColumnToRow * 0.5f);
}
float?_titleScale(int index)
{
return(1.0f - this._selectedIndexDelta(index) * tColumnToRow * 0.15f);
}
List <Widget> children = new List <Widget>(this.sectionCards);
for (int index = 0; index < this.sections.Count; index++)
{
Section section = this.sections[index];
children.Add(new LayoutId(
id: $"title{index}",
child: new SectionTitle(
section: section,
scale: _titleScale(index),
opacity: _titleOpacity(index)
)
));
}
for (int index = 0; index < this.sections.Count; index++)
{
children.Add(new LayoutId(
id: $"indicator{index}",
child: new SectionIndicator(
opacity: _indicatorOpacity(index)
)
));
}
return(new CustomMultiChildLayout(
layoutDelegate: new _AllSectionsLayout(
translation: new Alignment((this.selectedIndex.value - this.sectionIndex) * 2.0f - 1.0f ?? 0.0f,
-1.0f),
tColumnToRow: tColumnToRow ?? 0.0f,
tCollapsed: tCollapsed ?? 0.0f,
cardCount: this.sections.Count,
selectedIndex: this.selectedIndex.value
),
children: children
));
}
public bool Equals(Section other)
{
return(this.title == other.title);
}
