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28 #if ENABLE(LAYOUT_FORMATTING_CONTEXT)
30 #include "FloatingState.h"
31 #include "LayoutUnit.h"
32 #include <wtf/IsoMalloc.h>
33 #include <wtf/WeakPtr.h>
45 class FormattingState;
48 class FormattingContext {
49 WTF_MAKE_ISO_ALLOCATED(FormattingContext);
51 FormattingContext(const Box& formattingContextRoot, LayoutContext&);
52 virtual ~FormattingContext();
54 virtual void layout(LayoutContext&, FormattingState&) const = 0;
55 virtual std::unique_ptr<FormattingState> createFormattingState(Ref<FloatingState>&&) const = 0;
56 virtual Ref<FloatingState> createOrFindFloatingState() const = 0;
61 Display::Box& displayBox;
63 using LayoutQueue = Vector<std::unique_ptr<LayoutPair>>;
65 const Box& root() const { return *m_root; }
66 const LayoutContext& layoutContext() const { return m_layoutContext; }
68 virtual void computeStaticPosition(const Box&, Display::Box&) const;
69 virtual void computeInFlowPositionedPosition(const Box&, Display::Box&) const;
70 virtual void computeOutOfFlowPosition(const Box&, Display::Box&) const;
72 virtual void computeWidth(const Box&, Display::Box&) const;
73 virtual void computeHeight(const Box&, Display::Box&) const;
75 virtual void computeOutOfFlowWidth(const Box&, Display::Box&) const;
76 virtual void computeFloatingWidth(const Box&, Display::Box&) const;
77 virtual void computeInFlowWidth(const Box&, Display::Box&) const = 0;
79 virtual void computeOutOfFlowHeight(const Box&, Display::Box&) const;
80 virtual void computeFloatingHeight(const Box&, Display::Box&) const;
81 virtual void computeInFlowHeight(const Box&, Display::Box&) const = 0;
83 virtual LayoutUnit marginTop(const Box&) const;
84 virtual LayoutUnit marginLeft(const Box&) const;
85 virtual LayoutUnit marginBottom(const Box&) const;
86 virtual LayoutUnit marginRight(const Box&) const;
88 void placeInFlowPositionedChildren(const Container&) const;
89 void layoutOutOfFlowDescendants() const;
93 LayoutContext& m_layoutContext;