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Diffstat (limited to '')
| -rw-r--r-- | layout/tables/nsTableWrapperFrame.h | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/layout/tables/nsTableWrapperFrame.h b/layout/tables/nsTableWrapperFrame.h new file mode 100644 index 0000000000..e4eed8d02a --- /dev/null +++ b/layout/tables/nsTableWrapperFrame.h @@ -0,0 +1,280 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ +#ifndef nsTableWrapperFrame_h__ +#define nsTableWrapperFrame_h__ + +#include "mozilla/Attributes.h" +#include "mozilla/Maybe.h" +#include "nscore.h" +#include "nsContainerFrame.h" +#include "nsCellMap.h" +#include "nsTableFrame.h" + +namespace mozilla { +class PresShell; +} // namespace mozilla + +/** + * Primary frame for a table element, + * the nsTableWrapperFrame contains 0 or one caption frame, and a nsTableFrame + * pseudo-frame (referred to as the "inner frame'). + */ +class nsTableWrapperFrame : public nsContainerFrame { + public: + NS_DECL_QUERYFRAME + NS_DECL_FRAMEARENA_HELPERS(nsTableWrapperFrame) + + /** instantiate a new instance of nsTableRowFrame. + * @param aPresShell the pres shell for this frame + * + * @return the frame that was created + */ + friend nsTableWrapperFrame* NS_NewTableWrapperFrame( + mozilla::PresShell* aPresShell, ComputedStyle* aStyle); + + // nsIFrame overrides - see there for a description + + void Destroy(DestroyContext&) override; + + const nsFrameList& GetChildList(ChildListID aListID) const override; + void GetChildLists(nsTArray<ChildList>* aLists) const override; + + void SetInitialChildList(ChildListID aListID, + nsFrameList&& aChildList) override; + void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override; + void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame, + const nsLineList::iterator* aPrevFrameLine, + nsFrameList&& aFrameList) override; + void RemoveFrame(DestroyContext&, ChildListID, nsIFrame*) override; + + nsContainerFrame* GetContentInsertionFrame() override { + return PrincipalChildList().FirstChild()->GetContentInsertionFrame(); + } + +#ifdef ACCESSIBILITY + mozilla::a11y::AccType AccessibleType() override; +#endif + + void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + void BuildDisplayListForInnerTable(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists); + + nscoord SynthesizeFallbackBaseline( + mozilla::WritingMode aWM, + BaselineSharingGroup aBaselineGroup) const override; + Maybe<nscoord> GetNaturalBaselineBOffset( + mozilla::WritingMode aWM, BaselineSharingGroup aBaselineGroup, + BaselineExportContext aExportContext) const override; + + nscoord GetMinISize(gfxContext* aRenderingContext) override; + nscoord GetPrefISize(gfxContext* aRenderingContext) override; + + SizeComputationResult ComputeSize( + gfxContext* aRenderingContext, mozilla::WritingMode aWM, + const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize, + const mozilla::LogicalSize& aMargin, + const mozilla::LogicalSize& aBorderPadding, + const mozilla::StyleSizeOverrides& aSizeOverrides, + mozilla::ComputeSizeFlags aFlags) override; + + mozilla::LogicalSize ComputeAutoSize( + gfxContext* aRenderingContext, mozilla::WritingMode aWM, + const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize, + const mozilla::LogicalSize& aMargin, + const mozilla::LogicalSize& aBorderPadding, + const mozilla::StyleSizeOverrides& aSizeOverrides, + mozilla::ComputeSizeFlags aFlags) override; + + /** process a reflow command for the table. + * This involves reflowing the caption and the inner table. + * @see nsIFrame::Reflow */ + void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override; + +#ifdef DEBUG_FRAME_DUMP + nsresult GetFrameName(nsAString& aResult) const override; +#endif + + ComputedStyle* GetParentComputedStyle( + nsIFrame** aProviderFrame) const override; + + /** + * Return the content for the cell at the given row and column. + */ + nsIContent* GetCellAt(uint32_t aRowIdx, uint32_t aColIdx) const; + + /** + * Return the number of rows in the table. + */ + int32_t GetRowCount() const { return InnerTableFrame()->GetRowCount(); } + + /** + * Return the number of columns in the table. + */ + int32_t GetColCount() const { return InnerTableFrame()->GetColCount(); } + + /** + * Return the index of the cell at the given row and column. + */ + int32_t GetIndexByRowAndColumn(int32_t aRowIdx, int32_t aColIdx) const { + nsTableCellMap* cellMap = InnerTableFrame()->GetCellMap(); + if (!cellMap) return -1; + + return cellMap->GetIndexByRowAndColumn(aRowIdx, aColIdx); + } + + /** + * Get the row and column indices for the cell at the given index. + */ + void GetRowAndColumnByIndex(int32_t aCellIdx, int32_t* aRowIdx, + int32_t* aColIdx) const { + *aRowIdx = *aColIdx = 0; + nsTableCellMap* cellMap = InnerTableFrame()->GetCellMap(); + if (cellMap) { + cellMap->GetRowAndColumnByIndex(aCellIdx, aRowIdx, aColIdx); + } + } + + /** + * return the frame for the cell at the given row and column. + */ + nsTableCellFrame* GetCellFrameAt(uint32_t aRowIdx, uint32_t aColIdx) const { + nsTableCellMap* map = InnerTableFrame()->GetCellMap(); + if (!map) { + return nullptr; + } + + return map->GetCellInfoAt(aRowIdx, aColIdx); + } + + /** + * Return the col span of the cell at the given row and column indices. + */ + uint32_t GetEffectiveColSpanAt(uint32_t aRowIdx, uint32_t aColIdx) const { + nsTableCellMap* map = InnerTableFrame()->GetCellMap(); + return map->GetEffectiveColSpan(aRowIdx, aColIdx); + } + + /** + * Return the effective row span of the cell at the given row and column. + */ + uint32_t GetEffectiveRowSpanAt(uint32_t aRowIdx, uint32_t aColIdx) const { + nsTableCellMap* map = InnerTableFrame()->GetCellMap(); + return map->GetEffectiveRowSpan(aRowIdx, aColIdx); + } + + protected: + explicit nsTableWrapperFrame(ComputedStyle* aStyle, + nsPresContext* aPresContext, + ClassID aID = kClassID); + virtual ~nsTableWrapperFrame(); + + using MaybeCaptionSide = Maybe<mozilla::StyleCaptionSide>; + + // Get a StyleCaptionSide value, or Nothing if no caption is present. + // + // (Remember that caption-side values are interpreted logically, despite + // having "physical" names.) + MaybeCaptionSide GetCaptionSide() const; + + mozilla::StyleVerticalAlignKeyword GetCaptionVerticalAlign() const; + + nscoord ComputeFinalBSize(const MaybeCaptionSide&, + const mozilla::LogicalSize& aInnerSize, + const mozilla::LogicalSize& aCaptionSize, + const mozilla::LogicalMargin& aCaptionMargin, + const mozilla::WritingMode aWM) const; + + nsresult GetCaptionOrigin(mozilla::StyleCaptionSide, + const mozilla::LogicalSize& aContainBlockSize, + const mozilla::LogicalSize& aInnerSize, + const mozilla::LogicalSize& aCaptionSize, + mozilla::LogicalMargin& aCaptionMargin, + mozilla::LogicalPoint& aOrigin, + mozilla::WritingMode aWM); + + nsresult GetInnerOrigin(const MaybeCaptionSide&, + const mozilla::LogicalSize& aContainBlockSize, + const mozilla::LogicalSize& aCaptionSize, + const mozilla::LogicalMargin& aCaptionMargin, + const mozilla::LogicalSize& aInnerSize, + mozilla::LogicalPoint& aOrigin, + mozilla::WritingMode aWM); + + // Create and init the child reflow input, using passed-in aChildRI, so that + // caller can use it after we return. + // + // @param aBSizeOccupiedByCaption the block size occupied by the caption + // within our content box. + void CreateReflowInputForInnerTable( + nsPresContext* aPresContext, nsTableFrame* aTableFrame, + const ReflowInput& aOuterRI, Maybe<ReflowInput>& aChildRI, + const nscoord aAvailISize, nscoord aBSizeOccupiedByCaption = 0) const; + void CreateReflowInputForCaption(nsPresContext* aPresContext, + nsIFrame* aCaptionFrame, + const ReflowInput& aOuterRI, + Maybe<ReflowInput>& aChildRI, + const nscoord aAvailISize) const; + + // Reflow the child (caption or inner table frame). + void ReflowChild(nsPresContext* aPresContext, nsIFrame* aChildFrame, + const ReflowInput& aChildRI, ReflowOutput& aMetrics, + nsReflowStatus& aStatus); + + // Set the overflow areas in our reflow metrics + void UpdateOverflowAreas(ReflowOutput& aMet); + + virtual bool IsFrameOfType(uint32_t aFlags) const override { + return nsContainerFrame::IsFrameOfType(aFlags & + (~eCanContainOverflowContainers)); + } + + nsTableFrame* InnerTableFrame() const { + return static_cast<nsTableFrame*>(mFrames.FirstChild()); + } + + /** + * Helper for ComputeAutoSize. + * Compute the margin-box inline size of the frame given the inputs. + * + * Note: CaptionShrinkWrapISize doesn't need StyleSizeOverrides parameter. + */ + mozilla::LogicalSize InnerTableShrinkWrapSize( + gfxContext* aRenderingContext, nsTableFrame* aTableFrame, + mozilla::WritingMode aWM, const mozilla::LogicalSize& aCBSize, + nscoord aAvailableISize, + const mozilla::StyleSizeOverrides& aSizeOverrides, + mozilla::ComputeSizeFlags aFlag) const; + mozilla::LogicalSize CaptionShrinkWrapSize( + gfxContext* aRenderingContext, nsIFrame* aCaptionFrame, + mozilla::WritingMode aWM, const mozilla::LogicalSize& aCBSize, + nscoord aAvailableISize, mozilla::ComputeSizeFlags aFlag) const; + + /** + * Create a new StyleSize by reducing the size by aAmountToReduce. + * + * @param aStyleSize must be a Length. + */ + mozilla::StyleSize ReduceStyleSizeBy(const mozilla::StyleSize& aStyleSize, + const nscoord aAmountToReduce) const; + + /** + * Compute StyleSizeOverrides for inner table frame given the overrides of the + * table wrapper frame. + */ + mozilla::StyleSizeOverrides ComputeSizeOverridesForInnerTable( + const nsTableFrame* aTableFrame, + const mozilla::StyleSizeOverrides& aWrapperSizeOverrides, + const mozilla::LogicalSize& aBorderPadding, + nscoord aBSizeOccupiedByCaption) const; + + private: + nsFrameList mCaptionFrames; +}; + +#endif |