#pragma once
#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
#include "FloatingState.h"
#include "LayoutContainerBox.h"
#include <wtf/IsoMalloc.h>
namespace WebCore {
namespace Layout {
class FloatAvoider;
class FormattingContext;
class Box;
class LayoutState;
class FloatingContext {
WTF_MAKE_ISO_ALLOCATED(FloatingContext);
public:
FloatingContext(const ContainerBox& floatingContextRoot, const FormattingContext&, FloatingState&);
FloatingState& floatingState() const { return m_floatingState; }
LayoutPoint positionForFloat(const Box&, const HorizontalConstraints&) const;
LayoutPoint positionForNonFloatingFloatAvoider(const Box&, const HorizontalConstraints&) const;
struct ClearancePosition {
Optional<Position> position;
Optional<LayoutUnit> clearance;
};
ClearancePosition verticalPositionWithClearance(const Box&) const;
bool isEmpty() const { return m_floatingState.floats().isEmpty(); }
struct Constraints {
Optional<PointInContextRoot> left;
Optional<PointInContextRoot> right;
};
Constraints constraints(LayoutUnit candidateTop, LayoutUnit candidateHeight) const;
void append(const Box&);
private:
LayoutState& layoutState() const { return m_floatingState.layoutState(); }
const FormattingContext& formattingContext() const { return m_formattingContext; }
const ContainerBox& root() const { return *m_root; }
void findPositionForFormattingContextRoot(FloatAvoider&) const;
struct AbsoluteCoordinateValuesForFloatAvoider;
AbsoluteCoordinateValuesForFloatAvoider absoluteDisplayBoxCoordinates(const Box&) const;
LayoutPoint mapTopLeftToFloatingStateRoot(const Box&) const;
Point mapPointFromFormattingContextRootToFloatingStateRoot(Point) const;
WeakPtr<const ContainerBox> m_root;
const FormattingContext& m_formattingContext;
FloatingState& m_floatingState;
};
}
}
#endif