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434 lines
14 KiB
C++
434 lines
14 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 nsTableRowFrame_h__
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#define nsTableRowFrame_h__
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#include "mozilla/Attributes.h"
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#include "nscore.h"
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#include "nsContainerFrame.h"
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#include "nsTablePainter.h"
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#include "nsTableRowGroupFrame.h"
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#include "mozilla/WritingModes.h"
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class nsTableCellFrame;
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struct nsTableCellReflowState;
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/**
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* nsTableRowFrame is the frame that maps table rows
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* (HTML tag TR). This class cannot be reused
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* outside of an nsTableRowGroupFrame. It assumes that its parent is an nsTableRowGroupFrame,
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* and its children are nsTableCellFrames.
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*
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* @see nsTableFrame
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* @see nsTableRowGroupFrame
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* @see nsTableCellFrame
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*/
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class nsTableRowFrame : public nsContainerFrame
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{
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public:
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NS_DECL_QUERYFRAME_TARGET(nsTableRowFrame)
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS
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virtual ~nsTableRowFrame();
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
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/** @see nsIFrame::DidSetStyleContext */
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virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
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virtual void AppendFrames(ChildListID aListID,
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nsFrameList& aFrameList) override;
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virtual void InsertFrames(ChildListID aListID,
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nsIFrame* aPrevFrame,
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nsFrameList& aFrameList) override;
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virtual void RemoveFrame(ChildListID aListID,
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nsIFrame* aOldFrame) override;
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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 nsTableRowFrame* NS_NewTableRowFrame(nsIPresShell* aPresShell,
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nsStyleContext* aContext);
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nsTableRowGroupFrame* GetTableRowGroupFrame() const
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{
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nsIFrame* parent = GetParent();
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MOZ_ASSERT(parent && parent->GetType() == nsGkAtoms::tableRowGroupFrame);
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return static_cast<nsTableRowGroupFrame*>(parent);
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}
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nsTableFrame* GetTableFrame() const
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{
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return GetTableRowGroupFrame()->GetTableFrame();
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}
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virtual nsMargin GetUsedMargin() const override;
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virtual nsMargin GetUsedBorder() const override;
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virtual nsMargin GetUsedPadding() const override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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nsTableCellFrame* GetFirstCell() ;
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/** calls Reflow for all of its child cells.
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* Cells with rowspan=1 are all set to the same height and stacked horizontally.
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* <P> Cells are not split unless absolutely necessary.
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* <P> Cells are resized in nsTableFrame::BalanceColumnWidths
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* and nsTableFrame::ShrinkWrapChildren
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*
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* @param aDesiredSize width set to width of the sum of the cells, height set to
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* height of cells with rowspan=1.
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*
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* @see nsIFrame::Reflow
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* @see nsTableFrame::BalanceColumnWidths
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* @see nsTableFrame::ShrinkWrapChildren
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*/
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) override;
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void DidResize();
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::tableRowFrame
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*/
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virtual nsIAtom* GetType() const override;
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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virtual mozilla::WritingMode GetWritingMode() const override
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{ return GetTableFrame()->GetWritingMode(); }
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void UpdateBSize(nscoord aBSize,
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nscoord aAscent,
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nscoord aDescent,
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nsTableFrame* aTableFrame = nullptr,
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nsTableCellFrame* aCellFrame = nullptr);
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void ResetBSize(nscoord aRowStyleBSize);
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// calculate the bsize, considering content bsize of the
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// cells and the style bsize of the row and cells, excluding pct bsizes
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nscoord CalcBSize(const nsHTMLReflowState& aReflowState);
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// Support for cells with 'vertical-align: baseline'.
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/**
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* returns the max-ascent amongst all the cells that have
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* 'vertical-align: baseline', *including* cells with rowspans.
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* returns 0 if we don't have any cell with 'vertical-align: baseline'
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*/
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nscoord GetMaxCellAscent() const;
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/* return the row ascent
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*/
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nscoord GetRowBaseline(mozilla::WritingMode aWritingMode);
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/** returns the ordinal position of this row in its table */
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virtual int32_t GetRowIndex() const;
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/** set this row's starting row index */
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void SetRowIndex (int aRowIndex);
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/** used by row group frame code */
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nscoord ReflowCellFrame(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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bool aIsTopOfPage,
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nsTableCellFrame* aCellFrame,
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nscoord aAvailableBSize,
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nsReflowStatus& aStatus);
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/**
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* Collapse the row if required, apply col and colgroup visibility: collapse
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* info to the cells in the row.
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* @return the amount to shift bstart-wards all following rows
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* @param aRowOffset - shift the row bstart-wards by this amount
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* @param aISize - new isize of the row
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* @param aCollapseGroup - parent rowgroup is collapsed so this row needs
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* to be collapsed
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* @param aDidCollapse - the row has been collapsed
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*/
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nscoord CollapseRowIfNecessary(nscoord aRowOffset,
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nscoord aISize,
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bool aCollapseGroup,
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bool& aDidCollapse);
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/**
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* Insert a cell frame after the last cell frame that has a col index
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* that is less than aColIndex. If no such cell frame is found the
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* frame to insert is prepended to the child list.
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* @param aFrame the cell frame to insert
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* @param aColIndex the col index
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*/
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void InsertCellFrame(nsTableCellFrame* aFrame,
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int32_t aColIndex);
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nsresult CalculateCellActualBSize(nsTableCellFrame* aCellFrame,
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nscoord& aDesiredBSize,
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mozilla::WritingMode aWM);
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bool IsFirstInserted() const;
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void SetFirstInserted(bool aValue);
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nscoord GetContentBSize() const;
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void SetContentBSize(nscoord aTwipValue);
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bool HasStyleBSize() const;
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bool HasFixedBSize() const;
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void SetHasFixedBSize(bool aValue);
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bool HasPctBSize() const;
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void SetHasPctBSize(bool aValue);
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nscoord GetFixedBSize() const;
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void SetFixedBSize(nscoord aValue);
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float GetPctBSize() const;
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void SetPctBSize(float aPctValue,
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bool aForce = false);
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nscoord GetInitialBSize(nscoord aBasis = 0) const;
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nsTableRowFrame* GetNextRow() const;
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bool HasUnpaginatedBSize();
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void SetHasUnpaginatedBSize(bool aValue);
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nscoord GetUnpaginatedBSize(nsPresContext* aPresContext);
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void SetUnpaginatedBSize(nsPresContext* aPresContext, nscoord aValue);
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nscoord GetBStartBCBorderWidth() const { return mBStartBorderWidth; }
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nscoord GetBEndBCBorderWidth() const { return mBEndBorderWidth; }
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void SetBStartBCBorderWidth(BCPixelSize aWidth) { mBStartBorderWidth = aWidth; }
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void SetBEndBCBorderWidth(BCPixelSize aWidth) { mBEndBorderWidth = aWidth; }
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mozilla::LogicalMargin GetBCBorderWidth(mozilla::WritingMode aWM);
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/**
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* Gets inner border widths before collapsing with cell borders
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* Caller must get block-end border from next row or from table
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* GetContinuousBCBorderWidth will not overwrite that border
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* see nsTablePainter about continuous borders
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*/
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void GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
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mozilla::LogicalMargin& aBorder);
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/**
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* @returns outer block-start bc border == prev row's block-end inner
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*/
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nscoord GetOuterBStartContBCBorderWidth();
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/**
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* Sets full border widths before collapsing with cell borders
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* @param aForSide - side to set; only accepts iend, istart, and bstart
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*/
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void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
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BCPixelSize aPixelValue);
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virtual bool IsFrameOfType(uint32_t aFlags) const override
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{
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return nsContainerFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
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}
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virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) override;
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virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) override;
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virtual void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
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#ifdef ACCESSIBILITY
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virtual mozilla::a11y::AccType AccessibleType() override;
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#endif
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protected:
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/** protected constructor.
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* @see NewFrame
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*/
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explicit nsTableRowFrame(nsStyleContext *aContext);
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void InitChildReflowState(nsPresContext& aPresContext,
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const mozilla::LogicalSize& aAvailSize,
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bool aBorderCollapse,
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nsTableCellReflowState& aReflowState);
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virtual LogicalSides GetLogicalSkipSides(const nsHTMLReflowState* aReflowState = nullptr) const override;
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// row-specific methods
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nscoord ComputeCellXOffset(const nsHTMLReflowState& aState,
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nsIFrame* aKidFrame,
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const nsMargin& aKidMargin) const;
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/**
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* Called for incremental/dirty and resize reflows. If aDirtyOnly is true then
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* only reflow dirty cells.
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*/
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void ReflowChildren(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsTableFrame& aTableFrame,
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nsReflowStatus& aStatus);
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private:
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struct RowBits {
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unsigned mRowIndex:29;
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unsigned mHasFixedBSize:1; // set if the dominating style bsize on the row or any cell is pixel based
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unsigned mHasPctBSize:1; // set if the dominating style bsize on the row or any cell is pct based
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unsigned mFirstInserted:1; // if true, then it was the bstart-most newly inserted row
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} mBits;
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// the desired bsize based on the content of the tallest cell in the row
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nscoord mContentBSize;
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// the bsize based on a style percentage bsize on either the row or any cell
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// if mHasPctBSize is set
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nscoord mStylePctBSize;
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// the bsize based on a style pixel bsize on the row or any
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// cell if mHasFixedBSize is set
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nscoord mStyleFixedBSize;
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// max-ascent and max-descent amongst all cells that have 'vertical-align: baseline'
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nscoord mMaxCellAscent; // does include cells with rowspan > 1
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nscoord mMaxCellDescent; // does *not* include cells with rowspan > 1
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// border widths in pixels in the collapsing border model of the *inner*
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// half of the border only
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BCPixelSize mBStartBorderWidth;
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BCPixelSize mBEndBorderWidth;
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BCPixelSize mIEndContBorderWidth;
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BCPixelSize mBStartContBorderWidth;
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BCPixelSize mIStartContBorderWidth;
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/**
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* Sets the NS_ROW_HAS_CELL_WITH_STYLE_BSIZE bit to indicate whether
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* this row has any cells that have non-auto-bsize. (Row-spanning
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* cells are ignored.)
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*/
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void InitHasCellWithStyleBSize(nsTableFrame* aTableFrame);
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};
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inline int32_t nsTableRowFrame::GetRowIndex() const
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{
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return int32_t(mBits.mRowIndex);
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}
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inline void nsTableRowFrame::SetRowIndex (int aRowIndex)
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{
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mBits.mRowIndex = aRowIndex;
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}
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inline bool nsTableRowFrame::IsFirstInserted() const
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{
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return bool(mBits.mFirstInserted);
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}
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inline void nsTableRowFrame::SetFirstInserted(bool aValue)
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{
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mBits.mFirstInserted = aValue;
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}
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inline bool nsTableRowFrame::HasStyleBSize() const
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{
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return (bool)mBits.mHasFixedBSize || (bool)mBits.mHasPctBSize;
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}
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inline bool nsTableRowFrame::HasFixedBSize() const
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{
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return (bool)mBits.mHasFixedBSize;
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}
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inline void nsTableRowFrame::SetHasFixedBSize(bool aValue)
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{
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mBits.mHasFixedBSize = aValue;
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}
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inline bool nsTableRowFrame::HasPctBSize() const
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{
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return (bool)mBits.mHasPctBSize;
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}
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inline void nsTableRowFrame::SetHasPctBSize(bool aValue)
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{
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mBits.mHasPctBSize = aValue;
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}
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inline nscoord nsTableRowFrame::GetContentBSize() const
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{
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return mContentBSize;
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}
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inline void nsTableRowFrame::SetContentBSize(nscoord aValue)
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{
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mContentBSize = aValue;
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}
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inline nscoord nsTableRowFrame::GetFixedBSize() const
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{
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if (mBits.mHasFixedBSize) {
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return mStyleFixedBSize;
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}
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return 0;
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}
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inline float nsTableRowFrame::GetPctBSize() const
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{
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if (mBits.mHasPctBSize) {
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return (float)mStylePctBSize / 100.0f;
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}
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return 0.0f;
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}
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inline bool nsTableRowFrame::HasUnpaginatedBSize()
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{
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return HasAnyStateBits(NS_TABLE_ROW_HAS_UNPAGINATED_BSIZE);
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}
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inline void nsTableRowFrame::SetHasUnpaginatedBSize(bool aValue)
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{
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if (aValue) {
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AddStateBits(NS_TABLE_ROW_HAS_UNPAGINATED_BSIZE);
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} else {
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RemoveStateBits(NS_TABLE_ROW_HAS_UNPAGINATED_BSIZE);
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}
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}
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inline mozilla::LogicalMargin
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nsTableRowFrame::GetBCBorderWidth(mozilla::WritingMode aWM)
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{
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return mozilla::LogicalMargin(
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aWM, nsPresContext::CSSPixelsToAppUnits(mBStartBorderWidth), 0,
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nsPresContext::CSSPixelsToAppUnits(mBEndBorderWidth), 0);
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}
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inline void
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nsTableRowFrame::GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
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mozilla::LogicalMargin& aBorder)
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{
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int32_t aPixelsToTwips = nsPresContext::AppUnitsPerCSSPixel();
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aBorder.IEnd(aWM) = BC_BORDER_START_HALF_COORD(aPixelsToTwips,
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mIStartContBorderWidth);
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aBorder.BStart(aWM) = BC_BORDER_END_HALF_COORD(aPixelsToTwips,
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mBStartContBorderWidth);
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aBorder.IStart(aWM) = BC_BORDER_END_HALF_COORD(aPixelsToTwips,
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mIEndContBorderWidth);
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}
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inline nscoord nsTableRowFrame::GetOuterBStartContBCBorderWidth()
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{
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int32_t aPixelsToTwips = nsPresContext::AppUnitsPerCSSPixel();
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return BC_BORDER_START_HALF_COORD(aPixelsToTwips, mBStartContBorderWidth);
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}
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#endif
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