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/*
* Copyright (C) 2021 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 "FormattingContext.h"
#include "LayoutBoxGeometry.h"
namespace WebCore {
namespace Style {
struct InsetEdge;
struct MarginEdge;
struct PaddingEdge;
struct PreferredSize;
}
namespace Layout {
struct ComputedHorizontalMargin;
struct ComputedVerticalMargin;
class ElementBox;
struct ContentHeightAndMargin;
struct ContentWidthAndMargin;
struct HorizontalGeometry;
class LayoutState;
struct OverriddenHorizontalValues;
struct OverriddenVerticalValues;
struct VerticalGeometry;
// This class implements generic positioning and sizing.
class FormattingGeometry {
public:
FormattingGeometry(const FormattingContext&);
VerticalGeometry outOfFlowVerticalGeometry(const Box&, const HorizontalConstraints&, const VerticalConstraints&, const OverriddenVerticalValues&) const;
HorizontalGeometry outOfFlowHorizontalGeometry(const Box&, const HorizontalConstraints&, const VerticalConstraints&, const OverriddenHorizontalValues&) const;
ContentHeightAndMargin floatingContentHeightAndMargin(const Box&, const HorizontalConstraints&, const OverriddenVerticalValues&) const;
ContentWidthAndMargin floatingContentWidthAndMargin(const Box&, const HorizontalConstraints&, const OverriddenHorizontalValues&) const;
ContentHeightAndMargin inlineReplacedContentHeightAndMargin(const ElementBox&, const HorizontalConstraints&, std::optional<VerticalConstraints>, const OverriddenVerticalValues&) const;
ContentWidthAndMargin inlineReplacedContentWidthAndMargin(const ElementBox&, const HorizontalConstraints&, std::optional<VerticalConstraints>, const OverriddenHorizontalValues&) const;
LayoutSize inFlowPositionedPositionOffset(const Box&, const HorizontalConstraints&) const;
ContentHeightAndMargin complicatedCases(const Box&, const HorizontalConstraints&, const OverriddenVerticalValues&) const;
LayoutUnit shrinkToFitWidth(const Box&, LayoutUnit availableWidth) const;
BoxGeometry::Edges computedBorder(const Box&) const;
BoxGeometry::Edges computedPadding(const Box&, LayoutUnit containingBlockWidth) const;
ComputedHorizontalMargin computedHorizontalMargin(const Box&, const HorizontalConstraints&) const;
ComputedVerticalMargin computedVerticalMargin(const Box&, const HorizontalConstraints&) const;
std::optional<LayoutUnit> computedValue(const Style::InsetEdge&, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> computedValue(const Style::MarginEdge&, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> computedValue(const Style::PreferredSize&, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> computedValue(const Style::MinimumSize&, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> computedValue(const Style::MaximumSize&, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> computedValue(const Length& geometryProperty, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> fixedValue(const Style::MarginEdge&) const;
std::optional<LayoutUnit> fixedValue(const Style::PaddingEdge&) const;
std::optional<LayoutUnit> fixedValue(const Style::PreferredSize&) const;
std::optional<LayoutUnit> fixedValue(const Style::MinimumSize&) const;
std::optional<LayoutUnit> fixedValue(const Style::MaximumSize&) const;
std::optional<LayoutUnit> fixedValue(const Length& geometryProperty) const;
std::optional<LayoutUnit> computedMinHeight(const Box&, std::optional<LayoutUnit> containingBlockHeight = std::nullopt) const;
std::optional<LayoutUnit> computedMaxHeight(const Box&, std::optional<LayoutUnit> containingBlockHeight = std::nullopt) const;
std::optional<LayoutUnit> computedMinWidth(const Box&, LayoutUnit containingBlockWidth) const;
std::optional<LayoutUnit> computedMaxWidth(const Box&, LayoutUnit containingBlockWidth) const;
IntrinsicWidthConstraints constrainByMinMaxWidth(const Box&, IntrinsicWidthConstraints) const;
LayoutUnit contentHeightForFormattingContextRoot(const ElementBox&) const;
ConstraintsForOutOfFlowContent constraintsForOutOfFlowContent(const ElementBox&) const;
ConstraintsForInFlowContent constraintsForInFlowContent(const ElementBox&, std::optional<FormattingContext::EscapeReason> = std::nullopt) const;
std::optional<LayoutUnit> computedHeight(const Box&, std::optional<LayoutUnit> containingBlockHeight = std::nullopt) const;
std::optional<LayoutUnit> computedWidth(const Box&, LayoutUnit containingBlockWidth) const;
bool isBlockFormattingGeometry() const { return formattingContext().isBlockFormattingContext(); }
bool isTableFormattingGeometry() const { return formattingContext().isTableFormattingContext(); }
protected:
const LayoutState& layoutState() const { return m_formattingContext.layoutState(); }
const FormattingContext& formattingContext() const { return m_formattingContext; }
private:
VerticalGeometry outOfFlowReplacedVerticalGeometry(const ElementBox&, const HorizontalConstraints&, const VerticalConstraints&, const OverriddenVerticalValues&) const;
HorizontalGeometry outOfFlowReplacedHorizontalGeometry(const ElementBox&, const HorizontalConstraints&, const VerticalConstraints&, const OverriddenHorizontalValues&) const;
VerticalGeometry outOfFlowNonReplacedVerticalGeometry(const ElementBox&, const HorizontalConstraints&, const VerticalConstraints&, const OverriddenVerticalValues&) const;
HorizontalGeometry outOfFlowNonReplacedHorizontalGeometry(const ElementBox&, const HorizontalConstraints&, const OverriddenHorizontalValues&) const;
ContentHeightAndMargin floatingReplacedContentHeightAndMargin(const ElementBox&, const HorizontalConstraints&, const OverriddenVerticalValues&) const;
ContentWidthAndMargin floatingReplacedContentWidthAndMargin(const ElementBox&, const HorizontalConstraints&, const OverriddenHorizontalValues&) const;
ContentWidthAndMargin floatingNonReplacedContentWidthAndMargin(const Box&, const HorizontalConstraints&, const OverriddenHorizontalValues&) const;
LayoutUnit staticVerticalPositionForOutOfFlowPositioned(const Box&, const VerticalConstraints&) const;
LayoutUnit staticHorizontalPositionForOutOfFlowPositioned(const Box&, const HorizontalConstraints&) const;
enum class HeightType { Min, Max, Normal };
template<HeightType> std::optional<LayoutUnit> computedHeightValue(const Box&, std::optional<LayoutUnit> containingBlockHeight) const;
enum class WidthType { Min, Max, Normal };
template<WidthType> std::optional<LayoutUnit> computedWidthValue(const Box&, LayoutUnit containingBlockWidth) const;
const FormattingContext& m_formattingContext;
};
}
}
#define SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_GEOMETRY(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::Layout::ToValueTypeName) \
static bool isType(const WebCore::Layout::FormattingGeometry& formattingGeometry) { return formattingGeometry.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
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