forked from mirrors/gecko-dev
c8200e7d27
Remove redundant virtual keywords, and initialize stuff in the declaration when possible. Differential Revision: https://phabricator.services.mozilla.com/D170968
412 lines
16 KiB
C++
412 lines
16 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 nsTableRowGroupFrame_h__
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#define nsTableRowGroupFrame_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 "nsAtom.h"
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#include "nsILineIterator.h"
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#include "nsTArray.h"
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#include "nsTableFrame.h"
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#include "mozilla/WritingModes.h"
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class nsTableRowFrame;
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namespace mozilla {
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class PresShell;
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struct TableRowGroupReflowInput;
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} // namespace mozilla
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#define MIN_ROWS_NEEDING_CURSOR 20
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/**
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* nsTableRowGroupFrame is the frame that maps row groups
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* (HTML tags THEAD, TFOOT, and TBODY). This class cannot be reused
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* outside of an nsTableFrame. It assumes that its parent is an nsTableFrame,
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* and its children are nsTableRowFrames.
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*
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* @see nsTableFrame
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* @see nsTableRowFrame
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*/
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class nsTableRowGroupFrame final : public nsContainerFrame,
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public nsILineIterator {
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using TableRowGroupReflowInput = mozilla::TableRowGroupReflowInput;
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsTableRowGroupFrame)
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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 nsTableRowGroupFrame* NS_NewTableRowGroupFrame(
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mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
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virtual ~nsTableRowGroupFrame();
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// nsIFrame overrides
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void Init(nsIContent* aContent, nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override {
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nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
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if (!aPrevInFlow) {
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mWritingMode = GetTableFrame()->GetWritingMode();
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}
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}
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void DestroyFrom(nsIFrame* aDestructRoot,
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PostDestroyData& aPostDestroyData) override;
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/** @see nsIFrame::DidSetComputedStyle */
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void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) 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(ChildListID aListID, nsIFrame* aOldFrame) override;
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nsMargin GetUsedMargin() const override;
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nsMargin GetUsedBorder() const override;
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nsMargin GetUsedPadding() const override;
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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/**
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* Calls Reflow for all of its child rows.
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*
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* Rows are all set to the same isize and stacked in the block direction.
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*
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* Rows are not split unless absolutely necessary.
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*
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* @param aDesiredSize isize set to isize of rows, bsize set to
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* sum of bsize of rows that fit in AvailableBSize.
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*
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* @see nsIFrame::Reflow
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*/
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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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bool ComputeCustomOverflow(mozilla::OverflowAreas& aOverflowAreas) 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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nsTableRowFrame* GetFirstRow();
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nsTableRowFrame* GetLastRow();
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nsTableFrame* GetTableFrame() const {
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nsIFrame* parent = GetParent();
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MOZ_ASSERT(parent && parent->IsTableFrame());
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return static_cast<nsTableFrame*>(parent);
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}
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/** return the number of child rows (not necessarily == number of child
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* frames) */
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int32_t GetRowCount() const;
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/** return the table-relative row index of the first row in this rowgroup.
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* if there are no rows, -1 is returned.
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*/
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int32_t GetStartRowIndex() const;
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/** Adjust the row indices of all rows whose index is >= aRowIndex.
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* @param aRowIndex - start adjusting with this index
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* @param aAdjustment - shift the row index by this amount
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*/
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void AdjustRowIndices(int32_t aRowIndex, int32_t anAdjustment);
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// See nsTableFrame.h
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int32_t GetAdjustmentForStoredIndex(int32_t aStoredIndex);
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/* mark rows starting from aStartRowFrame to the next 'aNumRowsToRemove-1'
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* number of rows as deleted
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*/
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void MarkRowsAsDeleted(nsTableRowFrame& aStartRowFrame,
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int32_t aNumRowsToDelete);
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// See nsTableFrame.h
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void AddDeletedRowIndex(int32_t aDeletedRowStoredIndex);
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/**
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* Used for header and footer row group frames that are repeated when
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* splitting a table frame.
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*
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* Performs any table specific initialization
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*
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* @param aHeaderFooterFrame the original header or footer row group frame
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* that was repeated
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*/
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nsresult InitRepeatedFrame(nsTableRowGroupFrame* aHeaderFooterFrame);
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/**
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* Get the total bsize of all the row rects
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*/
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nscoord GetBSizeBasis(const ReflowInput& aReflowInput);
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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 bstart border from previous row group or from table
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* GetContinuousBCBorderWidth will not overwrite aBorder.BStart()
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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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* Sets full border widths before collapsing with cell borders
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* @param aForSide - side to set; only IEnd, IStart, BEnd are valid
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*/
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void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
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BCPixelSize aPixelValue);
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/**
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* Adjust to the effect of visibility:collapse on the row group and
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* its children
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* @return additional shift bstart-wards that should be applied
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* to subsequent rowgroups due to rows and this
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* rowgroup being collapsed
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* @param aBTotalOffset the total amount that the rowgroup is shifted
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* @param aISize new isize of the rowgroup
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* @param aWM the table's writing mode
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*/
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nscoord CollapseRowGroupIfNecessary(nscoord aBTotalOffset, nscoord aISize,
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mozilla::WritingMode aWM);
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// nsILineIterator methods
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public:
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// The table row is the equivalent to a line in block layout.
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// The nsILineIterator assumes that a line resides in a block, this role is
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// fullfilled by the row group. Rows in table are counted relative to the
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// table. The row index of row corresponds to the cellmap coordinates. The
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// line index with respect to a row group can be computed by substracting the
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// row index of the first row in the row group.
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/** Get the number of rows in a row group
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* @return the number of lines in a row group
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*/
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int32_t GetNumLines() const final;
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/** @see nsILineIterator.h IsLineIteratorFlowRTL */
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bool IsLineIteratorFlowRTL() final;
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/** Return structural information about a line. */
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Result<LineInfo, nsresult> GetLine(int32_t aLineNumber) final;
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/** Given a frame that's a child of the rowgroup, find which line its on.
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* @param aFrame - frame, should be a row
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* @param aStartLine - minimal index to return
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* @return row index relative to the row group if this a row
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* frame and the index is at least aStartLine.
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* -1 if the frame cannot be found.
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*/
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int32_t FindLineContaining(nsIFrame* aFrame, int32_t aStartLine = 0) final;
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/** Find the orginating cell frame on a row that is the nearest to the
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* inline-dir coordinate of aPos.
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* @param aLineNumber - the index of the row relative to the row group
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* @param aPos - coordinate in twips relative to the
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* origin of the row group
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* @param aFrameFound - pointer to the cellframe
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* @param aPosIsBeforeFirstFrame - the point is before the first originating
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* cellframe
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* @param aPosIsAfterLastFrame - the point is after the last originating
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* cellframe
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*/
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NS_IMETHOD FindFrameAt(int32_t aLineNumber, nsPoint aPos,
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nsIFrame** aFrameFound, bool* aPosIsBeforeFirstFrame,
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bool* aPosIsAfterLastFrame) final;
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/** Check whether visual and logical order of cell frames within a line are
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* identical. As the layout will reorder them this is always the case
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* @param aLine - the index of the row relative to the table
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* @param aIsReordered - returns false
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* @param aFirstVisual - if the table is rtl first originating cell frame
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* @param aLastVisual - if the table is rtl last originating cell frame
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*/
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NS_IMETHOD CheckLineOrder(int32_t aLine, bool* aIsReordered,
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nsIFrame** aFirstVisual,
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nsIFrame** aLastVisual) final;
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// row cursor methods to speed up searching for the row(s)
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// containing a point. The basic idea is that we set the cursor
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// property if the rows' y and yMosts are non-decreasing (considering only
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// rows with nonempty overflowAreas --- empty overflowAreas never participate
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// in event handling or painting), and the rowgroup has sufficient number of
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// rows. The cursor property points to a "recently used" row. If we get a
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// series of requests that work on rows "near" the cursor, then we can find
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// those nearby rows quickly by starting our search at the cursor.
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// This code is based on the line cursor code in nsBlockFrame. It's more
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// general though, and could be extracted and used elsewhere.
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struct FrameCursorData {
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nsTArray<nsIFrame*> mFrames;
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uint32_t mCursorIndex;
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nscoord mOverflowAbove;
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nscoord mOverflowBelow;
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FrameCursorData()
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: mFrames(MIN_ROWS_NEEDING_CURSOR),
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mCursorIndex(0),
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mOverflowAbove(0),
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mOverflowBelow(0) {}
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bool AppendFrame(nsIFrame* aFrame);
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void FinishBuildingCursor() { mFrames.Compact(); }
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};
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// Clear out row cursor because we're disturbing the rows (e.g., Reflow)
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void ClearRowCursor();
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/**
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* Get the first row that might contain y-coord 'aY', or nullptr if you must
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* search all rows.
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* The actual row returned might not contain 'aY', but if not, it is
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* guaranteed to be before any row which does contain 'aY'.
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* aOverflowAbove is the maximum over all rows of -row.GetOverflowRect().y.
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* To find all rows that intersect the vertical interval aY/aYMost, call
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* GetFirstRowContaining(aY, &overflowAbove), and then iterate through all
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* rows until reaching a row where row->GetRect().y - overflowAbove >= aYMost.
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* That row and all subsequent rows cannot intersect the interval.
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*/
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nsIFrame* GetFirstRowContaining(nscoord aY, nscoord* aOverflowAbove);
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/**
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* Set up the row cursor. After this, call AppendFrame for every
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* child frame in sibling order. Ensure that the child frame y and YMost
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* values form non-decreasing sequences (should always be true for table
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* rows); if this is violated, call ClearRowCursor(). If we return nullptr,
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* then we decided not to use a cursor or we already have one set up.
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*/
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FrameCursorData* SetupRowCursor();
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bool CanProvideLineIterator() const final { return true; }
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nsILineIterator* GetLineIterator() final { return this; }
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bool IsFrameOfType(uint32_t aFlags) const override {
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if (aFlags & (eSupportsContainLayoutAndPaint | eSupportsAspectRatio)) {
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return false;
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}
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return nsContainerFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
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}
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void InvalidateFrame(uint32_t aDisplayItemKey = 0,
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bool aRebuildDisplayItems = true) override;
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void InvalidateFrameWithRect(const nsRect& aRect,
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uint32_t aDisplayItemKey = 0,
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bool aRebuildDisplayItems = true) override;
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void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
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protected:
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explicit nsTableRowGroupFrame(ComputedStyle* aStyle,
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nsPresContext* aPresContext);
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void InitChildReflowInput(nsPresContext& aPresContext, bool aBorderCollapse,
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ReflowInput& aReflowInput);
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LogicalSides GetLogicalSkipSides() const override;
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void PlaceChild(nsPresContext* aPresContext,
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TableRowGroupReflowInput& aReflowInput, nsIFrame* aKidFrame,
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const ReflowInput& aKidReflowInput, mozilla::WritingMode aWM,
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const mozilla::LogicalPoint& aKidPosition,
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const nsSize& aContainerSize, ReflowOutput& aDesiredSize,
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const nsRect& aOriginalKidRect,
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const nsRect& aOriginalKidInkOverflow);
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void CalculateRowBSizes(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput);
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void DidResizeRows(ReflowOutput& aDesiredSize);
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/**
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* Reflow the frames we've already created
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*
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* @param aPresContext presentation context to use
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* @param aReflowInput current inline state
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*/
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void ReflowChildren(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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TableRowGroupReflowInput& aReflowInput,
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nsReflowStatus& aStatus,
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bool* aPageBreakBeforeEnd = nullptr);
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nsresult SplitRowGroup(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsTableFrame* aTableFrame, nsReflowStatus& aStatus,
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bool aRowForcedPageBreak);
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void SplitSpanningCells(nsPresContext& aPresContext,
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const ReflowInput& aReflowInput,
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nsTableFrame& aTableFrame, nsTableRowFrame& aFirstRow,
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nsTableRowFrame& aLastRow, bool aFirstRowIsTopOfPage,
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nscoord aSpanningRowBottom,
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nsTableRowFrame*& aContRowFrame,
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nsTableRowFrame*& aFirstTruncatedRow,
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nscoord& aDesiredHeight);
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void CreateContinuingRowFrame(nsIFrame& aRowFrame, nsIFrame** aContRowFrame);
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bool IsSimpleRowFrame(nsTableFrame* aTableFrame, nsTableRowFrame* aRowFrame);
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void GetNextRowSibling(nsIFrame** aRowFrame);
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void UndoContinuedRow(nsPresContext* aPresContext, nsTableRowFrame* aRow);
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private:
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// border widths in pixels in the collapsing border model
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BCPixelSize mIEndContBorderWidth = 0;
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BCPixelSize mBEndContBorderWidth = 0;
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BCPixelSize mIStartContBorderWidth = 0;
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public:
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bool IsRepeatable() const;
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void SetRepeatable(bool aRepeatable);
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bool HasStyleBSize() const;
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void SetHasStyleBSize(bool aValue);
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bool HasInternalBreakBefore() const;
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bool HasInternalBreakAfter() const;
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};
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inline bool nsTableRowGroupFrame::IsRepeatable() const {
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return HasAnyStateBits(NS_ROWGROUP_REPEATABLE);
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}
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inline void nsTableRowGroupFrame::SetRepeatable(bool aRepeatable) {
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if (aRepeatable) {
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AddStateBits(NS_ROWGROUP_REPEATABLE);
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} else {
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RemoveStateBits(NS_ROWGROUP_REPEATABLE);
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}
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}
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inline bool nsTableRowGroupFrame::HasStyleBSize() const {
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return HasAnyStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
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}
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inline void nsTableRowGroupFrame::SetHasStyleBSize(bool aValue) {
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if (aValue) {
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AddStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
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} else {
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RemoveStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
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}
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}
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inline void nsTableRowGroupFrame::GetContinuousBCBorderWidth(
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mozilla::WritingMode aWM, mozilla::LogicalMargin& aBorder) {
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int32_t d2a = PresContext()->AppUnitsPerDevPixel();
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aBorder.IEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mIEndContBorderWidth);
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aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mBEndContBorderWidth);
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aBorder.IStart(aWM) = BC_BORDER_END_HALF_COORD(d2a, mIStartContBorderWidth);
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}
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#endif
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