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28 #if ENABLE(LAYOUT_FORMATTING_CONTEXT)
30 #include "FormattingContext.h"
31 #include "LayoutUnit.h"
32 #include <wtf/IsoMalloc.h>
38 class BlockFormattingState;
41 // This class implements the layout logic for block formatting contexts.
42 // https://www.w3.org/TR/CSS22/visuren.html#block-formatting
43 class BlockFormattingContext : public FormattingContext {
44 WTF_MAKE_ISO_ALLOCATED(BlockFormattingContext);
46 BlockFormattingContext(const Box& formattingContextRoot, LayoutContext&);
48 void layout(LayoutContext&, FormattingState&) const override;
49 std::unique_ptr<FormattingState> createFormattingState(Ref<FloatingState>&&) const override;
50 Ref<FloatingState> createOrFindFloatingState() const override;
53 void computeStaticPosition(const Box&, Display::Box&) const override;
54 void computeInFlowWidth(const Box&, Display::Box&) const override;
55 void computeInFlowHeight(const Box&, Display::Box&) const override;
57 LayoutUnit marginTop(const Box&) const override;
58 LayoutUnit marginBottom(const Box&) const override;