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/*
* Copyright (C) 2020 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 "FlexFormattingConstraints.h"
#include "FlexFormattingGeometry.h"
#include "FlexFormattingState.h"
#include "FlexLayout.h"
#include "FlexRect.h"
#include "FormattingQuirks.h"
#include <wtf/IsoMalloc.h>
namespace WebCore {
namespace Layout {
// This class implements the layout logic for flex formatting contexts.
// https://www.w3.org/TR/css-flexbox-1/
class FlexFormattingContext final : public FormattingContext {
WTF_MAKE_ISO_ALLOCATED(FlexFormattingContext);
public:
FlexFormattingContext(const ContainerBox& formattingContextRoot, FlexFormattingState&);
void layoutInFlowContent(const ConstraintsForInFlowContent&) override;
IntrinsicWidthConstraints computedIntrinsicWidthConstraints() override;
LayoutUnit usedContentHeight() const override;
const FlexFormattingGeometry& formattingGeometry() const final { return m_flexFormattingGeometry; }
const FormattingQuirks& formattingQuirks() const final { return m_flexFormattingQuirks; }
void layoutInFlowContentForIntegration(const ConstraintsForFlexContent&);
IntrinsicWidthConstraints computedIntrinsicWidthConstraintsForIntegration();
private:
void sizeAndPlaceFlexItems(const ConstraintsForFlexContent&);
void computeIntrinsicWidthConstraintsForFlexItems();
FlexLayout::LogicalFlexItems convertFlexItemsToLogicalSpace(const ConstraintsForFlexContent&);
void setFlexItemsGeometry(const FlexLayout::LogicalFlexItems&, const FlexLayout::LogicalFlexItemRects&, const ConstraintsForFlexContent&);
std::optional<LayoutUnit> computedAutoMarginValueForFlexItems(const ConstraintsForFlexContent&);
const FlexFormattingState& formattingState() const { return downcast<FlexFormattingState>(FormattingContext::formattingState()); }
FlexFormattingState& formattingState() { return downcast<FlexFormattingState>(FormattingContext::formattingState()); }
const FlexFormattingGeometry m_flexFormattingGeometry;
const FormattingQuirks m_flexFormattingQuirks;
};
}
}
SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_CONTEXT(FlexFormattingContext, isFlexFormattingContext())
#endif
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