mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-28 23:31:56 +00:00
462 lines
18 KiB
C++
462 lines
18 KiB
C++
/* -*- 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 nsTableRowGroupFrame_h__
|
|
#define nsTableRowGroupFrame_h__
|
|
|
|
#include "mozilla/Attributes.h"
|
|
#include "nscore.h"
|
|
#include "nsContainerFrame.h"
|
|
#include "nsAtom.h"
|
|
#include "nsILineIterator.h"
|
|
#include "nsTArray.h"
|
|
#include "nsTableFrame.h"
|
|
#include "mozilla/WritingModes.h"
|
|
|
|
class nsTableRowFrame;
|
|
namespace mozilla {
|
|
struct TableRowGroupReflowInput;
|
|
} // namespace mozilla
|
|
|
|
#define MIN_ROWS_NEEDING_CURSOR 20
|
|
|
|
/**
|
|
* nsTableRowGroupFrame is the frame that maps row groups
|
|
* (HTML tags THEAD, TFOOT, and TBODY). This class cannot be reused
|
|
* outside of an nsTableFrame. It assumes that its parent is an nsTableFrame, and
|
|
* its children are nsTableRowFrames.
|
|
*
|
|
* @see nsTableFrame
|
|
* @see nsTableRowFrame
|
|
*/
|
|
class nsTableRowGroupFrame final
|
|
: public nsContainerFrame
|
|
, public nsILineIterator
|
|
{
|
|
using TableRowGroupReflowInput = mozilla::TableRowGroupReflowInput;
|
|
|
|
public:
|
|
NS_DECL_QUERYFRAME
|
|
NS_DECL_FRAMEARENA_HELPERS(nsTableRowGroupFrame)
|
|
|
|
/** instantiate a new instance of nsTableRowFrame.
|
|
* @param aPresShell the pres shell for this frame
|
|
*
|
|
* @return the frame that was created
|
|
*/
|
|
friend nsTableRowGroupFrame* NS_NewTableRowGroupFrame(nsIPresShell* aPresShell,
|
|
nsStyleContext* aContext);
|
|
virtual ~nsTableRowGroupFrame();
|
|
|
|
// nsIFrame overrides
|
|
virtual void Init(nsIContent* aContent,
|
|
nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) override
|
|
{
|
|
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
|
|
if (!aPrevInFlow) {
|
|
mWritingMode = GetTableFrame()->GetWritingMode();
|
|
}
|
|
}
|
|
|
|
virtual void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) override;
|
|
|
|
/** @see nsIFrame::DidSetStyleContext */
|
|
virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
|
|
|
|
virtual void AppendFrames(ChildListID aListID,
|
|
nsFrameList& aFrameList) override;
|
|
virtual void InsertFrames(ChildListID aListID,
|
|
nsIFrame* aPrevFrame,
|
|
nsFrameList& aFrameList) override;
|
|
virtual void RemoveFrame(ChildListID aListID,
|
|
nsIFrame* aOldFrame) override;
|
|
|
|
virtual nsMargin GetUsedMargin() const override;
|
|
virtual nsMargin GetUsedBorder() const override;
|
|
virtual nsMargin GetUsedPadding() const override;
|
|
|
|
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayListSet& aLists) override;
|
|
|
|
/** calls Reflow for all of its child rows.
|
|
* Rows are all set to the same isize and stacked in the block direction.
|
|
* <P> rows are not split unless absolutely necessary.
|
|
*
|
|
* @param aDesiredSize isize set to isize of rows, bsize set to
|
|
* sum of bsize of rows that fit in AvailableBSize.
|
|
*
|
|
* @see nsIFrame::Reflow
|
|
*/
|
|
virtual void Reflow(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus) override;
|
|
|
|
virtual bool ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas) override;
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
virtual nsresult GetFrameName(nsAString& aResult) const override;
|
|
#endif
|
|
|
|
nsTableRowFrame* GetFirstRow();
|
|
nsTableRowFrame* GetLastRow();
|
|
|
|
nsTableFrame* GetTableFrame() const
|
|
{
|
|
nsIFrame* parent = GetParent();
|
|
MOZ_ASSERT(parent && parent->IsTableFrame());
|
|
return static_cast<nsTableFrame*>(parent);
|
|
}
|
|
|
|
/** return the number of child rows (not necessarily == number of child frames) */
|
|
int32_t GetRowCount();
|
|
|
|
/** return the table-relative row index of the first row in this rowgroup.
|
|
* if there are no rows, -1 is returned.
|
|
*/
|
|
int32_t GetStartRowIndex();
|
|
|
|
/** Adjust the row indices of all rows whose index is >= aRowIndex.
|
|
* @param aRowIndex - start adjusting with this index
|
|
* @param aAdjustment - shift the row index by this amount
|
|
*/
|
|
void AdjustRowIndices(int32_t aRowIndex,
|
|
int32_t anAdjustment);
|
|
|
|
// See nsTableFrame.h
|
|
int32_t GetAdjustmentForStoredIndex(int32_t aStoredIndex);
|
|
|
|
/* mark rows starting from aStartRowFrame to the next 'aNumRowsToRemove-1'
|
|
* number of rows as deleted
|
|
*/
|
|
void MarkRowsAsDeleted(nsTableRowFrame& aStartRowFrame,
|
|
int32_t aNumRowsToDelete);
|
|
|
|
// See nsTableFrame.h
|
|
void AddDeletedRowIndex(int32_t aDeletedRowStoredIndex);
|
|
|
|
|
|
/**
|
|
* Used for header and footer row group frames that are repeated when
|
|
* splitting a table frame.
|
|
*
|
|
* Performs any table specific initialization
|
|
*
|
|
* @param aHeaderFooterFrame the original header or footer row group frame
|
|
* that was repeated
|
|
*/
|
|
nsresult InitRepeatedFrame(nsTableRowGroupFrame* aHeaderFooterFrame);
|
|
|
|
|
|
/**
|
|
* Get the total bsize of all the row rects
|
|
*/
|
|
nscoord GetBSizeBasis(const ReflowInput& aReflowInput);
|
|
|
|
mozilla::LogicalMargin GetBCBorderWidth(mozilla::WritingMode aWM);
|
|
|
|
/**
|
|
* Gets inner border widths before collapsing with cell borders
|
|
* Caller must get bstart border from previous row group or from table
|
|
* GetContinuousBCBorderWidth will not overwrite aBorder.BStart()
|
|
* see nsTablePainter about continuous borders
|
|
*/
|
|
void GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
|
|
mozilla::LogicalMargin& aBorder);
|
|
|
|
/**
|
|
* Sets full border widths before collapsing with cell borders
|
|
* @param aForSide - side to set; only IEnd, IStart, BEnd are valid
|
|
*/
|
|
void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
|
|
BCPixelSize aPixelValue);
|
|
/**
|
|
* Adjust to the effect of visibility:collapse on the row group and
|
|
* its children
|
|
* @return additional shift bstart-wards that should be applied
|
|
* to subsequent rowgroups due to rows and this
|
|
* rowgroup being collapsed
|
|
* @param aBTotalOffset the total amount that the rowgroup is shifted
|
|
* @param aISize new isize of the rowgroup
|
|
* @param aWM the table's writing mode
|
|
*/
|
|
nscoord CollapseRowGroupIfNecessary(nscoord aBTotalOffset,
|
|
nscoord aISize,
|
|
mozilla::WritingMode aWM);
|
|
|
|
// nsILineIterator methods
|
|
public:
|
|
virtual void DisposeLineIterator() override { }
|
|
|
|
// The table row is the equivalent to a line in block layout.
|
|
// The nsILineIterator assumes that a line resides in a block, this role is
|
|
// fullfilled by the row group. Rows in table are counted relative to the
|
|
// table. The row index of row corresponds to the cellmap coordinates. The
|
|
// line index with respect to a row group can be computed by substracting the
|
|
// row index of the first row in the row group.
|
|
|
|
/** Get the number of rows in a row group
|
|
* @return the number of lines in a row group
|
|
*/
|
|
virtual int32_t GetNumLines() override;
|
|
|
|
/** @see nsILineIterator.h GetDirection
|
|
* @return true if the table is rtl
|
|
*/
|
|
virtual bool GetDirection() override;
|
|
|
|
/** Return structural information about a line.
|
|
* @param aLineNumber - the index of the row relative to the row group
|
|
* If the line-number is invalid then
|
|
* aFirstFrameOnLine will be nullptr and
|
|
* aNumFramesOnLine will be zero.
|
|
* @param aFirstFrameOnLine - the first cell frame that originates in row
|
|
* with a rowindex that matches a line number
|
|
* @param aNumFramesOnLine - return the numbers of cells originating in
|
|
* this row
|
|
* @param aLineBounds - rect of the row
|
|
*/
|
|
NS_IMETHOD GetLine(int32_t aLineNumber,
|
|
nsIFrame** aFirstFrameOnLine,
|
|
int32_t* aNumFramesOnLine,
|
|
nsRect& aLineBounds) override;
|
|
|
|
/** Given a frame that's a child of the rowgroup, find which line its on.
|
|
* @param aFrame - frame, should be a row
|
|
* @param aStartLine - minimal index to return
|
|
* @return row index relative to the row group if this a row
|
|
* frame and the index is at least aStartLine.
|
|
* -1 if the frame cannot be found.
|
|
*/
|
|
virtual int32_t FindLineContaining(nsIFrame* aFrame, int32_t aStartLine = 0) override;
|
|
|
|
/** Find the orginating cell frame on a row that is the nearest to the
|
|
* inline-dir coordinate of aPos.
|
|
* @param aLineNumber - the index of the row relative to the row group
|
|
* @param aPos - coordinate in twips relative to the
|
|
* origin of the row group
|
|
* @param aFrameFound - pointer to the cellframe
|
|
* @param aPosIsBeforeFirstFrame - the point is before the first originating
|
|
* cellframe
|
|
* @param aPosIsAfterLastFrame - the point is after the last originating
|
|
* cellframe
|
|
*/
|
|
NS_IMETHOD FindFrameAt(int32_t aLineNumber,
|
|
nsPoint aPos,
|
|
nsIFrame** aFrameFound,
|
|
bool* aPosIsBeforeFirstFrame,
|
|
bool* aPosIsAfterLastFrame) override;
|
|
|
|
/** Check whether visual and logical order of cell frames within a line are
|
|
* identical. As the layout will reorder them this is always the case
|
|
* @param aLine - the index of the row relative to the table
|
|
* @param aIsReordered - returns false
|
|
* @param aFirstVisual - if the table is rtl first originating cell frame
|
|
* @param aLastVisual - if the table is rtl last originating cell frame
|
|
*/
|
|
|
|
NS_IMETHOD CheckLineOrder(int32_t aLine,
|
|
bool *aIsReordered,
|
|
nsIFrame **aFirstVisual,
|
|
nsIFrame **aLastVisual) override;
|
|
|
|
/** Find the next originating cell frame that originates in the row.
|
|
* @param aFrame - cell frame to start with, will return the next cell
|
|
* originating in a row
|
|
* @param aLineNumber - the index of the row relative to the table
|
|
*/
|
|
NS_IMETHOD GetNextSiblingOnLine(nsIFrame*& aFrame, int32_t aLineNumber) override;
|
|
|
|
// row cursor methods to speed up searching for the row(s)
|
|
// containing a point. The basic idea is that we set the cursor
|
|
// property if the rows' y and yMosts are non-decreasing (considering only
|
|
// rows with nonempty overflowAreas --- empty overflowAreas never participate
|
|
// in event handling or painting), and the rowgroup has sufficient number of
|
|
// rows. The cursor property points to a "recently used" row. If we get a
|
|
// series of requests that work on rows "near" the cursor, then we can find
|
|
// those nearby rows quickly by starting our search at the cursor.
|
|
// This code is based on the line cursor code in nsBlockFrame. It's more general
|
|
// though, and could be extracted and used elsewhere.
|
|
struct FrameCursorData {
|
|
nsTArray<nsIFrame*> mFrames;
|
|
uint32_t mCursorIndex;
|
|
nscoord mOverflowAbove;
|
|
nscoord mOverflowBelow;
|
|
|
|
FrameCursorData()
|
|
: mFrames(MIN_ROWS_NEEDING_CURSOR), mCursorIndex(0), mOverflowAbove(0),
|
|
mOverflowBelow(0) {}
|
|
|
|
bool AppendFrame(nsIFrame* aFrame);
|
|
|
|
void FinishBuildingCursor() {
|
|
mFrames.Compact();
|
|
}
|
|
};
|
|
|
|
// Clear out row cursor because we're disturbing the rows (e.g., Reflow)
|
|
void ClearRowCursor();
|
|
|
|
/**
|
|
* Get the first row that might contain y-coord 'aY', or nullptr if you must search
|
|
* all rows.
|
|
* The actual row returned might not contain 'aY', but if not, it is guaranteed
|
|
* to be before any row which does contain 'aY'.
|
|
* aOverflowAbove is the maximum over all rows of -row.GetOverflowRect().y.
|
|
* To find all rows that intersect the vertical interval aY/aYMost, call
|
|
* GetFirstRowContaining(aY, &overflowAbove), and then iterate through all
|
|
* rows until reaching a row where row->GetRect().y - overflowAbove >= aYMost.
|
|
* That row and all subsequent rows cannot intersect the interval.
|
|
*/
|
|
nsIFrame* GetFirstRowContaining(nscoord aY, nscoord* aOverflowAbove);
|
|
|
|
/**
|
|
* Set up the row cursor. After this, call AppendFrame for every
|
|
* child frame in sibling order. Ensure that the child frame y and YMost values
|
|
* form non-decreasing sequences (should always be true for table rows);
|
|
* if this is violated, call ClearRowCursor(). If we return nullptr, then we
|
|
* decided not to use a cursor or we already have one set up.
|
|
*/
|
|
FrameCursorData* SetupRowCursor();
|
|
|
|
virtual nsILineIterator* GetLineIterator() override { return this; }
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const override
|
|
{
|
|
return nsContainerFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
|
|
}
|
|
|
|
virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) override;
|
|
virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) override;
|
|
virtual void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
|
|
|
|
protected:
|
|
explicit nsTableRowGroupFrame(nsStyleContext* aContext);
|
|
|
|
void InitChildReflowInput(nsPresContext& aPresContext,
|
|
bool aBorderCollapse,
|
|
ReflowInput& aReflowInput);
|
|
|
|
virtual LogicalSides GetLogicalSkipSides(const ReflowInput* aReflowInput = nullptr) const override;
|
|
|
|
void PlaceChild(nsPresContext* aPresContext,
|
|
TableRowGroupReflowInput& aReflowInput,
|
|
nsIFrame* aKidFrame,
|
|
mozilla::WritingMode aWM,
|
|
const mozilla::LogicalPoint& aKidPosition,
|
|
const nsSize& aContainerSize,
|
|
ReflowOutput& aDesiredSize,
|
|
const nsRect& aOriginalKidRect,
|
|
const nsRect& aOriginalKidVisualOverflow);
|
|
|
|
void CalculateRowBSizes(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput);
|
|
|
|
void DidResizeRows(ReflowOutput& aDesiredSize);
|
|
|
|
void SlideChild(TableRowGroupReflowInput& aReflowInput,
|
|
nsIFrame* aKidFrame);
|
|
|
|
/**
|
|
* Reflow the frames we've already created
|
|
*
|
|
* @param aPresContext presentation context to use
|
|
* @param aReflowInput current inline state
|
|
*/
|
|
void ReflowChildren(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
TableRowGroupReflowInput& aReflowInput,
|
|
nsReflowStatus& aStatus,
|
|
bool* aPageBreakBeforeEnd = nullptr);
|
|
|
|
nsresult SplitRowGroup(nsPresContext* aPresContext,
|
|
ReflowOutput& aDesiredSize,
|
|
const ReflowInput& aReflowInput,
|
|
nsTableFrame* aTableFrame,
|
|
nsReflowStatus& aStatus,
|
|
bool aRowForcedPageBreak);
|
|
|
|
void SplitSpanningCells(nsPresContext& aPresContext,
|
|
const ReflowInput& aReflowInput,
|
|
nsTableFrame& aTableFrame,
|
|
nsTableRowFrame& aFirstRow,
|
|
nsTableRowFrame& aLastRow,
|
|
bool aFirstRowIsTopOfPage,
|
|
nscoord aSpanningRowBottom,
|
|
nsTableRowFrame*& aContRowFrame,
|
|
nsTableRowFrame*& aFirstTruncatedRow,
|
|
nscoord& aDesiredHeight);
|
|
|
|
void CreateContinuingRowFrame(nsPresContext& aPresContext,
|
|
nsIFrame& aRowFrame,
|
|
nsIFrame** aContRowFrame);
|
|
|
|
bool IsSimpleRowFrame(nsTableFrame* aTableFrame,
|
|
nsTableRowFrame* aRowFrame);
|
|
|
|
void GetNextRowSibling(nsIFrame** aRowFrame);
|
|
|
|
void UndoContinuedRow(nsPresContext* aPresContext,
|
|
nsTableRowFrame* aRow);
|
|
|
|
private:
|
|
// border widths in pixels in the collapsing border model
|
|
BCPixelSize mIEndContBorderWidth;
|
|
BCPixelSize mBEndContBorderWidth;
|
|
BCPixelSize mIStartContBorderWidth;
|
|
|
|
public:
|
|
bool IsRepeatable() const;
|
|
void SetRepeatable(bool aRepeatable);
|
|
bool HasStyleBSize() const;
|
|
void SetHasStyleBSize(bool aValue);
|
|
bool HasInternalBreakBefore() const;
|
|
bool HasInternalBreakAfter() const;
|
|
};
|
|
|
|
|
|
inline bool nsTableRowGroupFrame::IsRepeatable() const
|
|
{
|
|
return HasAnyStateBits(NS_ROWGROUP_REPEATABLE);
|
|
}
|
|
|
|
inline void nsTableRowGroupFrame::SetRepeatable(bool aRepeatable)
|
|
{
|
|
if (aRepeatable) {
|
|
AddStateBits(NS_ROWGROUP_REPEATABLE);
|
|
} else {
|
|
RemoveStateBits(NS_ROWGROUP_REPEATABLE);
|
|
}
|
|
}
|
|
|
|
inline bool nsTableRowGroupFrame::HasStyleBSize() const
|
|
{
|
|
return HasAnyStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
|
|
}
|
|
|
|
inline void nsTableRowGroupFrame::SetHasStyleBSize(bool aValue)
|
|
{
|
|
if (aValue) {
|
|
AddStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
|
|
} else {
|
|
RemoveStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
|
|
}
|
|
}
|
|
|
|
inline void
|
|
nsTableRowGroupFrame::GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
|
|
mozilla::LogicalMargin& aBorder)
|
|
{
|
|
int32_t d2a = PresContext()->AppUnitsPerDevPixel();
|
|
aBorder.IEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a,
|
|
mIEndContBorderWidth);
|
|
aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a,
|
|
mBEndContBorderWidth);
|
|
aBorder.IStart(aWM) = BC_BORDER_END_HALF_COORD(d2a,
|
|
mIStartContBorderWidth);
|
|
}
|
|
#endif
|