gecko-dev/layout/tables/nsTableRowFrame.h

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