| /* |
| * 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 |
| |
| #if ENABLE(LAYOUT_FORMATTING_CONTEXT) |
| |
| #include "FormattingContext.h" |
| #include "TableFormattingState.h" |
| #include "TableGrid.h" |
| #include <wtf/IsoMalloc.h> |
| #include <wtf/UniqueRef.h> |
| |
| namespace WebCore { |
| namespace Layout { |
| |
| class InvalidationState; |
| // This class implements the layout logic for table formatting contexts. |
| // https://www.w3.org/TR/CSS22/tables.html |
| class TableFormattingContext final : public FormattingContext { |
| WTF_MAKE_ISO_ALLOCATED(TableFormattingContext); |
| public: |
| TableFormattingContext(const ContainerBox& formattingContextRoot, TableFormattingState&); |
| void layoutInFlowContent(InvalidationState&, const ConstraintsForInFlowContent&) override; |
| |
| static UniqueRef<TableGrid> ensureTableGrid(const ContainerBox& tableBox); |
| |
| private: |
| class TableLayout { |
| public: |
| TableLayout(const TableFormattingContext&, const TableGrid&); |
| |
| using DistributedSpaces = Vector<LayoutUnit>; |
| DistributedSpaces distributedHorizontalSpace(LayoutUnit availableHorizontalSpace); |
| DistributedSpaces distributedVerticalSpace(Optional<LayoutUnit> availableVerticalSpace); |
| |
| private: |
| const TableFormattingContext& formattingContext() const { return m_formattingContext; } |
| |
| const TableFormattingContext& m_formattingContext; |
| const TableGrid& m_grid; |
| }; |
| |
| class Geometry : public FormattingContext::Geometry { |
| public: |
| LayoutUnit cellHeigh(const ContainerBox&) const; |
| Edges computedCellBorder(const TableGrid::Cell&) const; |
| Optional<LayoutUnit> computedColumnWidth(const ContainerBox& columnBox) const; |
| FormattingContext::IntrinsicWidthConstraints intrinsicWidthConstraintsForCell(const TableGrid::Cell&); |
| InlineLayoutUnit usedBaselineForCell(const ContainerBox& cellBox); |
| |
| private: |
| friend class TableFormattingContext; |
| Geometry(const TableFormattingContext&, const TableGrid&); |
| |
| const TableFormattingContext& formattingContext() const { return downcast<TableFormattingContext>(FormattingContext::Geometry::formattingContext()); } |
| const TableGrid& m_grid; |
| }; |
| TableFormattingContext::Geometry geometry() const { return Geometry(*this, formattingState().tableGrid()); } |
| TableFormattingContext::TableLayout tableLayout() const { return TableLayout(*this, formattingState().tableGrid()); } |
| |
| IntrinsicWidthConstraints computedIntrinsicWidthConstraints() override; |
| void layoutCell(const TableGrid::Cell&, LayoutUnit availableHorizontalSpace, Optional<LayoutUnit> usedCellHeight = WTF::nullopt); |
| void setUsedGeometryForCells(LayoutUnit availableHorizontalSpace); |
| void setUsedGeometryForRows(LayoutUnit availableHorizontalSpace); |
| void setUsedGeometryForSections(const ConstraintsForInFlowContent&); |
| |
| IntrinsicWidthConstraints computedPreferredWidthForColumns(); |
| void computeAndDistributeExtraSpace(LayoutUnit availableHorizontalSpace, Optional<LayoutUnit> availableVerticalSpace); |
| |
| const TableFormattingState& formattingState() const { return downcast<TableFormattingState>(FormattingContext::formattingState()); } |
| TableFormattingState& formattingState() { return downcast<TableFormattingState>(FormattingContext::formattingState()); } |
| }; |
| |
| inline TableFormattingContext::Geometry::Geometry(const TableFormattingContext& tableFormattingContext, const TableGrid& grid) |
| : FormattingContext::Geometry(tableFormattingContext) |
| , m_grid(grid) |
| { |
| } |
| |
| } |
| } |
| |
| SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_CONTEXT(TableFormattingContext, isTableFormattingContext()) |
| |
| #endif |