private bool TryComputeAreaSizeComponents(SheetSnapAreaCollection areas, out double totalStarSize, out double starDenominator)
{
if (areas.Empty())
{
totalStarSize = starDenominator = 0;
return(false);
}
else
{
var totalSize = ActualHeight;
// This is the space occupied by all absolute-sized areas.
var totalAbsoluteSize = areas
.Where(a => a.Height.IsAbsolute)
.Sum(a => a.Height.Value);
// This is the space occupied by all star-sized areas.
totalStarSize = totalSize - totalAbsoluteSize;
// this is used to calculate the height of star-sized areas.
starDenominator = areas
.Where(a => a.Height.IsStar)
.Sum(a => a.Height.Value);
return(true);
}
}
public ModalStandardBottomSheet()
{
DefaultStyleKey = typeof(ModalStandardBottomSheet);
SnapAreas = new SheetSnapAreaCollection()
{
_defaultTopSnapPoint,
_defaultCenterSnapPoint,
_defaultBottomSnapPoint
};
InitialSnapAreaName = _defaultBottomSnapPoint.Name;
(this as DependencyObject).RegisterPropertyChangedCallback(ModalStandardBottomSheet.CurrentSnapAreaProperty, (s, e) => OnCurrentSnapAreaChanged(s, e));
(this as DependencyObject).RegisterPropertyChangedCallback(ModalStandardBottomSheet.SheetPositionProperty, (s, e) => OnPositionChanged(s, e));
#if __IOS__
// Workaround for #405 - iOS ActualHeight of inner elemens not known on creation
SizeChanged += OnSizeChanged;
#endif
}
