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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "InlineDisplayContent.h"
#include <wtf/HashMap.h>
#include <wtf/IteratorRange.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
namespace LayoutIntegration {
class InlineContent;
}
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::LayoutIntegration::InlineContent> : std::true_type { };
}
namespace WebCore {
class RenderBlockFlow;
class RenderObject;
struct SVGTextFragment;
namespace Layout {
class Box;
}
namespace InlineDisplay {
struct Box;
class Line;
}
namespace LayoutIntegration {
class LineLayout;
class InlineContent : public CanMakeWeakPtr<InlineContent> {
WTF_MAKE_FAST_ALLOCATED;
public:
InlineContent(const RenderBlockFlow& formattingContextRoot);
InlineDisplay::Content& displayContent() { return m_displayContent; }
const InlineDisplay::Content& displayContent() const { return m_displayContent; }
bool hasContent() const;
FloatRect scrollableOverflow() const { return m_scrollableOverflow; }
FloatRect inkOverflow() const { return m_inkOverflow; }
bool hasInkOverflow() const { return inkOverflow() != scrollableOverflow(); }
bool isPaginated() const { return m_firstLinePaginationOffset.has_value(); }
float firstLinePaginationOffset() const { return m_firstLinePaginationOffset.value_or(0.f); }
float clearBeforeAfterGaps() const { return m_clearGapBeforeFirstLine + m_clearGapAfterLastLine; }
float clearGapBeforeFirstLine() const { return m_clearGapBeforeFirstLine; }
IteratorRange<const InlineDisplay::Box*> boxesForRect(const LayoutRect&) const;
const InlineDisplay::Line& lineForBox(const InlineDisplay::Box& box) const { return displayContent().lines[box.lineIndex()]; }
size_t indexForBox(const InlineDisplay::Box&) const;
const InlineDisplay::Box* firstBoxForLayoutBox(const Layout::Box&) const;
std::optional<size_t> firstBoxIndexForLayoutBox(const Layout::Box&) const;
template<typename Function> void traverseNonRootInlineBoxes(const Layout::Box&, Function&&);
const RenderBlockFlow& formattingContextRoot() const;
const Vector<SVGTextFragment>& svgTextFragments(size_t boxIndex) const;
Vector<Vector<SVGTextFragment>>& svgTextFragmentsForBoxes() { return m_svgTextFragmentsForBoxes; }
void shrinkToFit();
void releaseCaches();
private:
friend class InlineContentBuilder;
friend class LineLayout;
void setInkOverflow(const FloatRect& inkOverflow) { m_inkOverflow = inkOverflow; }
void setScrollableOverflow(const FloatRect& scrollableOverflow) { m_scrollableOverflow = scrollableOverflow; }
void setHasMultilinePaintOverlap() { m_hasMultilinePaintOverlap = true; }
void setClearGapBeforeFirstLine(float clearGapBeforeFirstLine) { m_clearGapBeforeFirstLine = clearGapBeforeFirstLine; }
void setClearGapAfterLastLine(float clearGapAfterLastLine) { m_clearGapAfterLastLine = clearGapAfterLastLine; }
void setFirstLinePaginationOffset(float firstLinePaginationOffset) { m_firstLinePaginationOffset = firstLinePaginationOffset; }
const Vector<size_t>& nonRootInlineBoxIndexesForLayoutBox(const Layout::Box&) const;
CheckedRef<const RenderBlockFlow> m_formattingContextRoot;
InlineDisplay::Content m_displayContent;
using FirstBoxIndexCache = UncheckedKeyHashMap<CheckedRef<const Layout::Box>, size_t>;
mutable std::unique_ptr<FirstBoxIndexCache> m_firstBoxIndexCache;
using InlineBoxIndexCache = UncheckedKeyHashMap<CheckedRef<const Layout::Box>, Vector<size_t>>;
mutable std::unique_ptr<InlineBoxIndexCache> m_inlineBoxIndexCache;
FloatRect m_scrollableOverflow;
FloatRect m_inkOverflow;
float m_clearGapBeforeFirstLine { 0 };
float m_clearGapAfterLastLine { 0 };
std::optional<float> m_firstLinePaginationOffset { };
bool m_hasMultilinePaintOverlap { false };
Vector<Vector<SVGTextFragment>> m_svgTextFragmentsForBoxes;
};
template<typename Function> void InlineContent::traverseNonRootInlineBoxes(const Layout::Box& layoutBox, Function&& function)
{
for (auto index : nonRootInlineBoxIndexesForLayoutBox(layoutBox))
function(displayContent().boxes[index]);
}
}
}
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