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/*
* Copyright (C) 2018 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
#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
#include "FormattingContext.h"
#include "LineLayoutContext.h"
#include <wtf/IsoMalloc.h>
namespace WebCore {
namespace Layout {
class InlineFormattingState;
class InvalidationState;
// This class implements the layout logic for inline formatting contexts.
// https://www.w3.org/TR/CSS22/visuren.html#inline-formatting
class InlineFormattingContext final : public FormattingContext {
WTF_MAKE_ISO_ALLOCATED(InlineFormattingContext);
public:
InlineFormattingContext(const ContainerBox& formattingContextRoot, InlineFormattingState&);
void layoutInFlowContent(InvalidationState&, const ConstraintsForInFlowContent&) override;
private:
IntrinsicWidthConstraints computedIntrinsicWidthConstraints() override;
class Quirks : public FormattingContext::Quirks {
public:
bool lineDescentNeedsCollapsing(const LineBuilder::RunList&) const;
LineBuilder::Constraints::HeightAndBaseline lineHeightConstraints(const ContainerBox& formattingRoot) const;
private:
friend class InlineFormattingContext;
Quirks(const InlineFormattingContext&);
const InlineFormattingContext& formattingContext() const { return downcast<InlineFormattingContext>(FormattingContext::Quirks::formattingContext()); }
};
InlineFormattingContext::Quirks quirks() const { return Quirks(*this); }
class Geometry : public FormattingContext::Geometry {
public:
ContentHeightAndMargin inlineBlockHeightAndMargin(const Box&, const HorizontalConstraints&, const OverrideVerticalValues&) const;
ContentWidthAndMargin inlineBlockWidthAndMargin(const Box&, const HorizontalConstraints&, const OverrideHorizontalValues&);
Optional<InlineLayoutUnit> computedTextIndent(const ContainerBox& formattingContextRoot, const HorizontalConstraints&) const;
private:
friend class InlineFormattingContext;
Geometry(const InlineFormattingContext&);
const InlineFormattingContext& formattingContext() const { return downcast<InlineFormattingContext>(FormattingContext::Geometry::formattingContext()); }
};
InlineFormattingContext::Geometry geometry() const { return Geometry(*this); }
void lineLayout(InlineItems&, LineLayoutContext::InlineItemRange, const ConstraintsForInFlowContent&);
void computeIntrinsicWidthForFormattingRoot(const Box&);
InlineLayoutUnit computedIntrinsicWidthForConstraint(InlineLayoutUnit availableWidth) const;
void computeHorizontalMargin(const Box&, const HorizontalConstraints&);
void computeHeightAndMargin(const Box&, const HorizontalConstraints&);
void computeWidthAndMargin(const Box&, const HorizontalConstraints&);
void collectInlineContentIfNeeded();
LineBuilder::Constraints constraintsForLine(const HorizontalConstraints&, InlineLayoutUnit lineLogicalTop);
void setDisplayBoxesForLine(const LineLayoutContext::LineContent&, const HorizontalConstraints&);
void invalidateFormattingState(const InvalidationState&);
const InlineFormattingState& formattingState() const { return downcast<InlineFormattingState>(FormattingContext::formattingState()); }
InlineFormattingState& formattingState() { return downcast<InlineFormattingState>(FormattingContext::formattingState()); }
// FIXME: Come up with a structure that requires no friending.
friend class LineBuilder;
};
inline InlineFormattingContext::Geometry::Geometry(const InlineFormattingContext& inlineFormattingContext)
: FormattingContext::Geometry(inlineFormattingContext)
{
}
inline InlineFormattingContext::Quirks::Quirks(const InlineFormattingContext& inlineFormattingContext)
: FormattingContext::Quirks(inlineFormattingContext)
{
}
}
}
SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_CONTEXT(InlineFormattingContext, isInlineFormattingContext())
#endif