public StopOr<Change<Children>> Split(Unit pageHeight, Unit spaceLeftToEndPage)
{
var signal = TryFitTo(pageHeight, spaceLeftToEndPage);
if (signal.OperationWasNotAllowed)
return new Stop<Change<Children>>();
var upper = new Children(from change in signal.Result
from line in change
where line.Top < spaceLeftToEndPage
select line);
var lower = new Children(from change in signal.Result
from line in change
where line.Top >= spaceLeftToEndPage
select line.MoveDown(-spaceLeftToEndPage));
return new Changed<Children>(upper, lower);
;
}
LayoutedElement LayoutElement(ElementSpecification element)
{
var hasDefinedWidth = element.InnerWidth != Unit.Undefined;
var hasDefinedHeight = element.InnerHeight != Unit.Undefined;
if (element.Children.Any())
{
var verticalSpaceForChildren = hasDefinedWidth ? element.InnerWidth : containerInnerWidth - element.Edge.TotalHorizontal;
var heightForChildren = hasDefinedHeight ? element.InnerHeight : Unit.Max(containerInnerHeight - element.Edge.TotalVertical, Unit.Zero);
var lines = new LiningLayouter(verticalSpaceForChildren, heightForChildren).PositionElements(element.Children);
var children = new Children(lines);
return new LayoutedElement(element, children)
{
Name = element.Name,
ForcedInnerWidth = hasDefinedWidth ? element.InnerWidth : children.OuterWidth,
ForcedInnerHeight = element.InnerHeight,
};
}
if (hasDefinedWidth)
{
return new LayoutedElement(element, Children.Empty)
{
Name = element.Name,
ForcedInnerWidth = element.InnerWidth,
ForcedInnerHeight = element.InnerHeight,
};
}
return new LayoutedElement(element, Children.Empty)
{
Name = element.Name,
ForcedInnerWidth = Unit.Undefined,
ForcedInnerHeight = element.InnerHeight
};
}
public LayoutedElement(ElementSpecification specification, Children children)
{
this.specification = specification;
this.children = children;
}