pjs/layout/tables/nsTableRowFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
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*
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
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* the Initial Developer. All Rights Reserved.
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* Contributor(s):
*
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#ifndef nsTableRowFrame_h__
#define nsTableRowFrame_h__
#include "nscore.h"
#include "nsHTMLContainerFrame.h"
#include "nsTablePainter.h"
class nsTableFrame;
class nsTableCellFrame;
struct nsTableCellReflowState;
#ifdef DEBUG_TABLE_REFLOW_TIMING
class nsReflowTimer;
#endif
#define NS_ROW_NEED_SPECIAL_REFLOW 0x20000000
#define NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT 0x40000000
/**
* 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 nsHTMLContainerFrame
{
public:
virtual ~nsTableRowFrame();
NS_IMETHOD Init(nsPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsStyleContext* aContext,
nsIFrame* aPrevInFlow);
NS_IMETHOD AppendFrames(nsPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aFrameList);
NS_IMETHOD InsertFrames(nsPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aPrevFrame,
nsIFrame* aFrameList);
NS_IMETHOD RemoveFrame(nsPresContext* aPresContext,
nsIPresShell& aPresShell,
nsIAtom* aListName,
nsIFrame* aOldFrame);
/** instantiate a new instance of nsTableRowFrame.
* @param aResult the new object is returned in this out-param
* @param aContent the table object to map
* @param aParent the parent of the new frame
*
* @return NS_OK if the frame was properly allocated, otherwise an error code
*/
friend nsresult
NS_NewTableRowFrame(nsIPresShell* aPresShell, nsIFrame** aResult);
/** @see nsIFrame::Paint */
NS_IMETHOD Paint(nsPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags = 0);
// rows don't paint their own background -- the cells do
virtual PRBool CanPaintBackground() { return PR_FALSE; }
NS_IMETHOD GetFrameForPoint(nsPresContext* aPresContext,
const nsPoint& aPoint,
nsFramePaintLayer aWhichLayer,
nsIFrame** aFrame);
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
*/
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
void DidResize(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState);
/**
* Get the "type" of the frame
*
* @see nsLayoutAtoms::tableRowFrame
*/
virtual nsIAtom* GetType() const;
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
void UpdateHeight(nscoord aHeight,
nscoord aAscent,
nscoord aDescent,
nsTableFrame* aTableFrame = nsnull,
nsTableCellFrame* aCellFrame = nsnull);
void ResetHeight(nscoord aRowStyleHeight);
// calculate the height, considering content height of the
// cells and the style height of the row and cells, excluding pct heights
nscoord CalcHeight(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;
/** returns the ordinal position of this row in its table */
virtual PRInt32 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,
nsTableCellFrame* aCellFrame,
nscoord aAvailableHeight,
nsReflowStatus& aStatus);
void InsertCellFrame(nsTableCellFrame* aFrame,
nsTableCellFrame* aPrevSibling);
void InsertCellFrame(nsTableCellFrame* aFrame,
PRInt32 aColIndex);
void RemoveCellFrame(nsTableCellFrame* aFrame);
nsresult CalculateCellActualSize(nsIFrame* aRowFrame,
nscoord& aDesiredWidth,
nscoord& aDesiredHeight,
nscoord aAvailWidth);
PRBool IsFirstInserted() const;
void SetFirstInserted(PRBool aValue);
PRBool NeedSpecialReflow() const;
void SetNeedSpecialReflow(PRBool aValue);
PRBool GetContentHeight() const;
void SetContentHeight(nscoord aTwipValue);
PRBool HasStyleHeight() const;
PRBool HasFixedHeight() const;
void SetHasFixedHeight(PRBool aValue);
PRBool HasPctHeight() const;
void SetHasPctHeight(PRBool aValue);
nscoord GetFixedHeight() const;
void SetFixedHeight(nscoord aValue);
float GetPctHeight() const;
void SetPctHeight(float aPctValue,
PRBool aForce = PR_FALSE);
nscoord GetHeight(nscoord aBasis = 0) const;
nsTableRowFrame* GetNextRow() const;
PRBool HasUnpaginatedHeight();
void SetHasUnpaginatedHeight(PRBool aValue);
nscoord GetUnpaginatedHeight(nsPresContext* aPresContext);
void SetUnpaginatedHeight(nsPresContext* aPresContext, nscoord aValue);
nscoord GetTopBCBorderWidth(float* aPixelsToTwips = nsnull);
void SetTopBCBorderWidth(BCPixelSize aWidth);
nscoord GetBottomBCBorderWidth(float* aPixelsToTwips = nsnull);
void SetBottomBCBorderWidth(BCPixelSize aWidth);
nsMargin* GetBCBorderWidth(float aPixelsToTwips,
nsMargin& aBorder);
/**
* Gets inner border widths before collapsing with cell borders
* Caller must get bottom border from next row or from table
* GetContinuousBCBorderWidth will not overwrite aBorder.bottom
* see nsTablePainter about continuous borders
*/
void GetContinuousBCBorderWidth(float aPixelsToTwips,
nsMargin& aBorder);
/**
* @returns outer top bc border == prev row's bottom inner
*/
nscoord GetOuterTopContBCBorderWidth(float aPixelsToTwips);
/**
* Sets full border widths before collapsing with cell borders
* @param aForSide - side to set; only accepts right, left, and top
*/
void SetContinuousBCBorderWidth(PRUint8 aForSide,
BCPixelSize aPixelValue);
protected:
/** protected constructor.
* @see NewFrame
*/
nsTableRowFrame();
void InitChildReflowState(nsPresContext& aPresContext,
const nsSize& aAvailSize,
PRBool aBorderCollapse,
float aPixelsToTwips,
nsTableCellReflowState& aReflowState,
PRBool aResetComputedWidth = PR_FALSE);
/** implement abstract method on nsHTMLContainerFrame */
virtual PRIntn GetSkipSides() const;
/** Incremental Reflow attempts to do column balancing with the minimum number of reflow
* commands to child elements. This is done by processing the reflow command,
* rebalancing column widths (if necessary), then comparing the resulting column widths
* to the prior column widths and reflowing only those cells that require a reflow.
*
* @see Reflow
*/
NS_IMETHOD IncrementalReflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsTableFrame& aTableFrame,
nsReflowStatus& aStatus);
NS_IMETHOD IR_TargetIsChild(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsTableFrame& aTableFrame,
nsReflowStatus& aStatus,
nsIFrame* aNextFrame);
NS_IMETHOD IR_TargetIsMe(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsTableFrame& aTableFrame,
nsReflowStatus& aStatus);
NS_IMETHOD IR_StyleChanged(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsTableFrame& aTableFrame,
nsReflowStatus& aStatus);
// 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.
*/
NS_IMETHOD ReflowChildren(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsTableFrame& aTableFrame,
nsReflowStatus& aStatus,
PRBool aDirtyOnly = PR_FALSE);
private:
struct RowBits {
unsigned mRowIndex:29;
unsigned mHasFixedHeight:1; // set if the dominating style height on the row or any cell is pixel based
unsigned mHasPctHeight:1; // set if the dominating style height on the row or any cell is pct based
unsigned mFirstInserted:1; // if true, then it was the top most newly inserted row
} mBits;
// the desired height based on the content of the tallest cell in the row
nscoord mContentHeight;
// the height based on a style percentage height on either the row or any cell
// if mHasPctHeight is set
nscoord mStylePctHeight;
// the height based on a style pixel height on the row or any
// cell if mHasFixedHeight is set
nscoord mStyleFixedHeight;
// 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
BCPixelSize mTopBorderWidth;
BCPixelSize mBottomBorderWidth;
BCPixelSize mRightContBorderWidth;
BCPixelSize mTopContBorderWidth;
BCPixelSize mLeftContBorderWidth;
#ifdef DEBUG_TABLE_REFLOW_TIMING
public:
nsReflowTimer* mTimer;
#endif
};
inline PRInt32 nsTableRowFrame::GetRowIndex() const
{
return PRInt32(mBits.mRowIndex);
}
inline void nsTableRowFrame::SetRowIndex (int aRowIndex)
{
mBits.mRowIndex = aRowIndex;
}
inline PRBool nsTableRowFrame::IsFirstInserted() const
{
return PRBool(mBits.mFirstInserted);
}
inline void nsTableRowFrame::SetFirstInserted(PRBool aValue)
{
mBits.mFirstInserted = aValue;
}
inline PRBool nsTableRowFrame::HasStyleHeight() const
{
return (PRBool)mBits.mHasFixedHeight || (PRBool)mBits.mHasPctHeight;
}
inline PRBool nsTableRowFrame::HasFixedHeight() const
{
return (PRBool)mBits.mHasFixedHeight;
}
inline void nsTableRowFrame::SetHasFixedHeight(PRBool aValue)
{
mBits.mHasFixedHeight = aValue;
}
inline PRBool nsTableRowFrame::HasPctHeight() const
{
return (PRBool)mBits.mHasPctHeight;
}
inline void nsTableRowFrame::SetHasPctHeight(PRBool aValue)
{
mBits.mHasPctHeight = aValue;
}
inline nscoord nsTableRowFrame::GetContentHeight() const
{
return mContentHeight;
}
inline void nsTableRowFrame::SetContentHeight(nscoord aValue)
{
mContentHeight = aValue;
}
inline nscoord nsTableRowFrame::GetFixedHeight() const
{
if (mBits.mHasFixedHeight)
return mStyleFixedHeight;
else
return 0;
}
inline float nsTableRowFrame::GetPctHeight() const
{
if (mBits.mHasPctHeight)
return (float)mStylePctHeight / 100.0f;
else
return 0.0f;
}
inline PRBool nsTableRowFrame::NeedSpecialReflow() const
{
return (mState & NS_ROW_NEED_SPECIAL_REFLOW) == NS_ROW_NEED_SPECIAL_REFLOW;
}
inline void nsTableRowFrame::SetNeedSpecialReflow(PRBool aValue)
{
if (aValue) {
mState |= NS_ROW_NEED_SPECIAL_REFLOW;
} else {
mState &= ~NS_ROW_NEED_SPECIAL_REFLOW;
}
}
inline PRBool nsTableRowFrame::HasUnpaginatedHeight()
{
return (mState & NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT) ==
NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT;
}
inline void nsTableRowFrame::SetHasUnpaginatedHeight(PRBool aValue)
{
if (aValue) {
mState |= NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT;
} else {
mState &= ~NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT;
}
}
inline nscoord nsTableRowFrame::GetTopBCBorderWidth(float* aPixelsToTwips)
{
nscoord width = (aPixelsToTwips) ? NSToCoordRound(*aPixelsToTwips * mTopBorderWidth) : mTopBorderWidth;
return width;
}
inline void nsTableRowFrame::SetTopBCBorderWidth(BCPixelSize aWidth)
{
mTopBorderWidth = aWidth;
}
inline nscoord nsTableRowFrame::GetBottomBCBorderWidth(float* aPixelsToTwips)
{
nscoord width = (aPixelsToTwips) ? NSToCoordRound(*aPixelsToTwips * mBottomBorderWidth) : mBottomBorderWidth;
return width;
}
inline void nsTableRowFrame::SetBottomBCBorderWidth(BCPixelSize aWidth)
{
mBottomBorderWidth = aWidth;
}
inline nsMargin* nsTableRowFrame::GetBCBorderWidth(float aPixelsToTwips,
nsMargin& aBorder)
{
aBorder.left = aBorder.right = 0;
aBorder.top = NSToCoordRound(aPixelsToTwips * mTopBorderWidth);
aBorder.bottom = NSToCoordRound(aPixelsToTwips * mBottomBorderWidth);
return &aBorder;
}
inline void
nsTableRowFrame::GetContinuousBCBorderWidth(float aPixelsToTwips,
nsMargin& aBorder)
{
aBorder.right = BC_BORDER_LEFT_HALF_COORD(aPixelsToTwips,
mLeftContBorderWidth);
aBorder.top = BC_BORDER_BOTTOM_HALF_COORD(aPixelsToTwips,
mTopContBorderWidth);
aBorder.left = BC_BORDER_RIGHT_HALF_COORD(aPixelsToTwips,
mRightContBorderWidth);
}
inline nscoord nsTableRowFrame::GetOuterTopContBCBorderWidth(float aPixelsToTwips)
{
return BC_BORDER_TOP_HALF_COORD(aPixelsToTwips, mTopContBorderWidth);
}
#endif