97 lines
3.7 KiB
C++
97 lines
3.7 KiB
C++
/*
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* Copyright (C) 2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
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#include "LayoutBoxGeometry.h"
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#include "LayoutContainerBox.h"
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#include <wtf/IsoMalloc.h>
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#include <wtf/Ref.h>
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#include <wtf/WeakPtr.h>
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namespace WebCore {
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namespace Layout {
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class Box;
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class BoxGeometry;
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class FloatingContext;
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class LayoutState;
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class Rect;
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// FloatingState holds the floating boxes per formatting context.
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class FloatingState : public RefCounted<FloatingState> {
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WTF_MAKE_ISO_ALLOCATED(FloatingState);
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public:
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static Ref<FloatingState> create(LayoutState& layoutState, const ContainerBox& formattingContextRoot) { return adoptRef(*new FloatingState(layoutState, formattingContextRoot)); }
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const ContainerBox& root() const { return *m_formattingContextRoot; }
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class FloatItem {
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public:
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FloatItem(const Box&, BoxGeometry absoluteBoxGeometry);
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// FIXME: This c'tor is only used by the render tree integation codepath.
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enum class Position { Left, Right };
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FloatItem(Position, BoxGeometry absoluteBoxGeometry);
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bool isLeftPositioned() const { return m_position == Position::Left; }
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bool isInFormattingContextOf(const ContainerBox& formattingContextRoot) const { return m_layoutBox->isInFormattingContextOf(formattingContextRoot); }
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Rect rectWithMargin() const { return BoxGeometry::marginBoxRect(m_absoluteBoxGeometry); }
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BoxGeometry::HorizontalMargin horizontalMargin() const { return m_absoluteBoxGeometry.horizontalMargin(); }
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PositionInContextRoot bottom() const { return { BoxGeometry::borderBoxRect(m_absoluteBoxGeometry).bottom() }; }
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#if ASSERT_ENABLED
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const Box* floatBox() const { return m_layoutBox.get(); }
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#endif
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private:
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WeakPtr<const Box> m_layoutBox;
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Position m_position;
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BoxGeometry m_absoluteBoxGeometry;
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};
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using FloatList = Vector<FloatItem>;
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const FloatList& floats() const { return m_floats; }
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const FloatItem* last() const { return floats().isEmpty() ? nullptr : &m_floats.last(); }
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void append(FloatItem);
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void clear() { m_floats.clear(); }
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private:
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friend class FloatingContext;
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FloatingState(LayoutState&, const ContainerBox& formattingContextRoot);
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LayoutState& layoutState() const { return m_layoutState; }
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LayoutState& m_layoutState;
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WeakPtr<const ContainerBox> m_formattingContextRoot;
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FloatList m_floats;
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};
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}
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}
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#endif
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