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05409a157f
The old code used to apply ShrinkWrap flag to both the inner table and the caption if the table wrapper is a stretched grid item. However, per analysis in bug 1350037 comment 4, when we reflow table captions, we'd like it *not* to shrink-wrap, but to stretch its inline-size to at least as wide as the inner table frame [1]. This patch moves the logic that computes whether a table is a stretched grid item from `ReflowInput` to `nsTableWrapperFrame`, and apply the `ShrinkWrap` flag to inner table if needed. [1] https://searchfox.org/mozilla-central/rev/54d6d78c3b33c92fd9eef9c0555a153bf8e4f2b4/layout/tables/nsTableWrapperFrame.cpp#760-763 Differential Revision: https://phabricator.services.mozilla.com/D196705
282 lines
10 KiB
C++
282 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsTableWrapperFrame_h__
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#define nsTableWrapperFrame_h__
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#include "LayoutConstants.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/Maybe.h"
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#include "nscore.h"
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#include "nsContainerFrame.h"
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#include "nsCellMap.h"
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#include "nsTableFrame.h"
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namespace mozilla {
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class PresShell;
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} // namespace mozilla
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/**
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* Primary frame for a table element,
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* the nsTableWrapperFrame contains 0 or one caption frame, and a nsTableFrame
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* pseudo-frame (referred to as the "inner frame').
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*/
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class nsTableWrapperFrame : public nsContainerFrame {
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsTableWrapperFrame)
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/** instantiate a new instance of nsTableRowFrame.
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* @param aPresShell the pres shell for this frame
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*
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* @return the frame that was created
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*/
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friend nsTableWrapperFrame* NS_NewTableWrapperFrame(
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mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
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// nsIFrame overrides - see there for a description
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void Destroy(DestroyContext&) override;
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const nsFrameList& GetChildList(ChildListID aListID) const override;
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void GetChildLists(nsTArray<ChildList>* aLists) const override;
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void SetInitialChildList(ChildListID aListID,
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nsFrameList&& aChildList) override;
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void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override;
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void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
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const nsLineList::iterator* aPrevFrameLine,
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nsFrameList&& aFrameList) override;
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void RemoveFrame(DestroyContext&, ChildListID, nsIFrame*) override;
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nsContainerFrame* GetContentInsertionFrame() override {
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return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
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}
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#ifdef ACCESSIBILITY
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mozilla::a11y::AccType AccessibleType() override;
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#endif
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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void BuildDisplayListForInnerTable(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists);
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nscoord SynthesizeFallbackBaseline(
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mozilla::WritingMode aWM,
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BaselineSharingGroup aBaselineGroup) const override;
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Maybe<nscoord> GetNaturalBaselineBOffset(
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mozilla::WritingMode aWM, BaselineSharingGroup aBaselineGroup,
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BaselineExportContext aExportContext) const override;
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nscoord GetMinISize(gfxContext* aRenderingContext) override;
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nscoord GetPrefISize(gfxContext* aRenderingContext) override;
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SizeComputationResult ComputeSize(
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gfxContext* aRenderingContext, mozilla::WritingMode aWM,
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const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorderPadding,
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const mozilla::StyleSizeOverrides& aSizeOverrides,
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mozilla::ComputeSizeFlags aFlags) override;
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mozilla::LogicalSize ComputeAutoSize(
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gfxContext* aRenderingContext, mozilla::WritingMode aWM,
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const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorderPadding,
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const mozilla::StyleSizeOverrides& aSizeOverrides,
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mozilla::ComputeSizeFlags aFlags) override;
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/** process a reflow command for the table.
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* This involves reflowing the caption and the inner table.
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* @see nsIFrame::Reflow */
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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ComputedStyle* GetParentComputedStyle(
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nsIFrame** aProviderFrame) const override;
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/**
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* Return the content for the cell at the given row and column.
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*/
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nsIContent* GetCellAt(uint32_t aRowIdx, uint32_t aColIdx) const;
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/**
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* Return the number of rows in the table.
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*/
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int32_t GetRowCount() const { return InnerTableFrame()->GetRowCount(); }
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/**
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* Return the number of columns in the table.
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*/
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int32_t GetColCount() const { return InnerTableFrame()->GetColCount(); }
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/**
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* Return the index of the cell at the given row and column.
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*/
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int32_t GetIndexByRowAndColumn(int32_t aRowIdx, int32_t aColIdx) const {
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nsTableCellMap* cellMap = InnerTableFrame()->GetCellMap();
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if (!cellMap) return -1;
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return cellMap->GetIndexByRowAndColumn(aRowIdx, aColIdx);
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}
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/**
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* Get the row and column indices for the cell at the given index.
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*/
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void GetRowAndColumnByIndex(int32_t aCellIdx, int32_t* aRowIdx,
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int32_t* aColIdx) const {
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*aRowIdx = *aColIdx = 0;
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nsTableCellMap* cellMap = InnerTableFrame()->GetCellMap();
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if (cellMap) {
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cellMap->GetRowAndColumnByIndex(aCellIdx, aRowIdx, aColIdx);
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}
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}
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/**
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* return the frame for the cell at the given row and column.
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*/
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nsTableCellFrame* GetCellFrameAt(uint32_t aRowIdx, uint32_t aColIdx) const {
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nsTableCellMap* map = InnerTableFrame()->GetCellMap();
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if (!map) {
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return nullptr;
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}
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return map->GetCellInfoAt(aRowIdx, aColIdx);
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}
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/**
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* Return the col span of the cell at the given row and column indices.
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*/
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uint32_t GetEffectiveColSpanAt(uint32_t aRowIdx, uint32_t aColIdx) const {
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nsTableCellMap* map = InnerTableFrame()->GetCellMap();
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return map->GetEffectiveColSpan(aRowIdx, aColIdx);
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}
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/**
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* Return the effective row span of the cell at the given row and column.
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*/
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uint32_t GetEffectiveRowSpanAt(uint32_t aRowIdx, uint32_t aColIdx) const {
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nsTableCellMap* map = InnerTableFrame()->GetCellMap();
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return map->GetEffectiveRowSpan(aRowIdx, aColIdx);
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}
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protected:
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explicit nsTableWrapperFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext,
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ClassID aID = kClassID);
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virtual ~nsTableWrapperFrame();
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using MaybeCaptionSide = Maybe<mozilla::StyleCaptionSide>;
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// Get a StyleCaptionSide value, or Nothing if no caption is present.
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//
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// (Remember that caption-side values are interpreted logically, despite
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// having "physical" names.)
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MaybeCaptionSide GetCaptionSide() const;
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mozilla::StyleVerticalAlignKeyword GetCaptionVerticalAlign() const;
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nscoord ComputeFinalBSize(const mozilla::LogicalSize& aInnerSize,
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const mozilla::LogicalSize& aCaptionSize,
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const mozilla::LogicalMargin& aCaptionMargin,
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const mozilla::WritingMode aWM) const;
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void GetCaptionOrigin(mozilla::StyleCaptionSide,
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const mozilla::LogicalSize& aInnerSize,
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const mozilla::LogicalSize& aCaptionSize,
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mozilla::LogicalMargin& aCaptionMargin,
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mozilla::LogicalPoint& aOrigin,
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mozilla::WritingMode aWM) const;
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void GetInnerOrigin(const MaybeCaptionSide&,
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const mozilla::LogicalSize& aCaptionSize,
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const mozilla::LogicalMargin& aCaptionMargin,
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const mozilla::LogicalSize& aInnerSize,
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mozilla::LogicalPoint& aOrigin,
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mozilla::WritingMode aWM) const;
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// This is a helper for CreateReflowInputForInnerTable() and
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// ComputeAutoSize(). It computes whether we need shrink-wrap behavior for
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// children.
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//
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// Note: We don't need to call this in CreateReflowInputForCaption() because
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// when we reflow the captions, we want them to stretch their inline-sizes to
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// be at least as wide as the inner table frame.
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mozilla::ComputeSizeFlags CreateComputeSizeFlagsForChild() const;
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// Create and init the child reflow input, using passed-in aChildRI, so that
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// caller can use it after we return.
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//
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// @param aBSizeOccupiedByCaption the block size occupied by the caption
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// within our content box.
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void CreateReflowInputForInnerTable(
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nsPresContext* aPresContext, nsTableFrame* aTableFrame,
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const ReflowInput& aOuterRI, Maybe<ReflowInput>& aChildRI,
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const nscoord aAvailISize, nscoord aBSizeOccupiedByCaption = 0) const;
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void CreateReflowInputForCaption(nsPresContext* aPresContext,
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nsIFrame* aCaptionFrame,
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const ReflowInput& aOuterRI,
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Maybe<ReflowInput>& aChildRI,
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const nscoord aAvailISize) const;
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// Reflow the child (caption or inner table frame).
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void ReflowChild(nsPresContext* aPresContext, nsIFrame* aChildFrame,
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const ReflowInput& aChildRI, ReflowOutput& aMetrics,
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nsReflowStatus& aStatus);
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// Set the overflow areas in our reflow metrics
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void UpdateOverflowAreas(ReflowOutput& aMet);
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nsTableFrame* InnerTableFrame() const {
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return static_cast<nsTableFrame*>(mFrames.FirstChild());
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}
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/**
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* Helper for ComputeAutoSize.
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* Compute the margin-box inline size of the frame given the inputs.
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*
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* Note: CaptionShrinkWrapISize doesn't need StyleSizeOverrides parameter.
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*/
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mozilla::LogicalSize InnerTableShrinkWrapSize(
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gfxContext* aRenderingContext, nsTableFrame* aTableFrame,
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mozilla::WritingMode aWM, const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::StyleSizeOverrides& aSizeOverrides,
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mozilla::ComputeSizeFlags aFlag) const;
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mozilla::LogicalSize CaptionShrinkWrapSize(
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gfxContext* aRenderingContext, nsIFrame* aCaptionFrame,
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mozilla::WritingMode aWM, const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize, mozilla::ComputeSizeFlags aFlag) const;
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/**
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* Create a new StyleSize by reducing the size by aAmountToReduce.
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*
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* @param aStyleSize must be a Length.
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*/
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mozilla::StyleSize ReduceStyleSizeBy(const mozilla::StyleSize& aStyleSize,
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const nscoord aAmountToReduce) const;
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/**
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* Compute StyleSizeOverrides for inner table frame given the overrides of the
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* table wrapper frame.
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*/
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mozilla::StyleSizeOverrides ComputeSizeOverridesForInnerTable(
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const nsTableFrame* aTableFrame,
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const mozilla::StyleSizeOverrides& aWrapperSizeOverrides,
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const mozilla::LogicalSize& aBorderPadding,
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nscoord aBSizeOccupiedByCaption) const;
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private:
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nsFrameList mCaptionFrames;
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};
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#endif
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