зеркало из https://github.com/mozilla/pjs.git
501 строка
17 KiB
C++
501 строка
17 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsTableRowFrame_h__
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#define nsTableRowFrame_h__
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#include "nscore.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsTablePainter.h"
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class nsTableFrame;
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class nsTableCellFrame;
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struct nsTableCellReflowState;
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#ifdef DEBUG_TABLE_REFLOW_TIMING
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class nsReflowTimer;
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#endif
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#define NS_ROW_NEED_SPECIAL_REFLOW 0x20000000
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#define NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT 0x40000000
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// This is also used on rows, from nsTableRowGroupFrame.h
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// #define NS_REPEATED_ROW_OR_ROWGROUP 0x10000000
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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 nsHTMLContainerFrame
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{
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public:
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virtual ~nsTableRowFrame();
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NS_IMETHOD Init(nsPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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NS_IMETHOD AppendFrames(nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIAtom* aListName,
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nsIFrame* aOldFrame);
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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 nsIFrame* NS_NewTableRowFrame(nsIPresShell* aPresShell);
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/** @see nsIFrame::Paint */
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NS_IMETHOD Paint(nsPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags = 0);
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// rows don't paint their own background -- the cells do
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virtual PRBool CanPaintBackground() { return PR_FALSE; }
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virtual nsIFrame* GetFrameForPoint(const nsPoint& aPoint,
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nsFramePaintLayer aWhichLayer);
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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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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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void DidResize(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState);
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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::tableRowFrame
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*/
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virtual nsIAtom* GetType() const;
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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void UpdateHeight(nscoord aHeight,
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nscoord aAscent,
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nscoord aDescent,
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nsTableFrame* aTableFrame = nsnull,
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nsTableCellFrame* aCellFrame = nsnull);
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void ResetHeight(nscoord aRowStyleHeight);
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// calculate the height, considering content height of the
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// cells and the style height of the row and cells, excluding pct heights
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nscoord CalcHeight(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 GetAscent();
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/** returns the ordinal position of this row in its table */
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virtual PRInt32 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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nsTableCellFrame* aCellFrame,
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nscoord aAvailableHeight,
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nsReflowStatus& aStatus);
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void InsertCellFrame(nsTableCellFrame* aFrame,
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nsTableCellFrame* aPrevSibling);
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void InsertCellFrame(nsTableCellFrame* aFrame,
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PRInt32 aColIndex);
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void RemoveCellFrame(nsTableCellFrame* aFrame);
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nsresult CalculateCellActualSize(nsIFrame* aRowFrame,
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nscoord& aDesiredWidth,
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nscoord& aDesiredHeight,
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nscoord aAvailWidth);
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PRBool IsFirstInserted() const;
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void SetFirstInserted(PRBool aValue);
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PRBool NeedSpecialReflow() const;
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void SetNeedSpecialReflow(PRBool aValue);
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PRBool GetContentHeight() const;
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void SetContentHeight(nscoord aTwipValue);
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PRBool HasStyleHeight() const;
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PRBool HasFixedHeight() const;
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void SetHasFixedHeight(PRBool aValue);
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PRBool HasPctHeight() const;
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void SetHasPctHeight(PRBool aValue);
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nscoord GetFixedHeight() const;
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void SetFixedHeight(nscoord aValue);
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float GetPctHeight() const;
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void SetPctHeight(float aPctValue,
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PRBool aForce = PR_FALSE);
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nscoord GetHeight(nscoord aBasis = 0) const;
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nsTableRowFrame* GetNextRow() const;
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PRBool HasUnpaginatedHeight();
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void SetHasUnpaginatedHeight(PRBool aValue);
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nscoord GetUnpaginatedHeight(nsPresContext* aPresContext);
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void SetUnpaginatedHeight(nsPresContext* aPresContext, nscoord aValue);
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nscoord GetTopBCBorderWidth(float* aPixelsToTwips = nsnull);
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void SetTopBCBorderWidth(BCPixelSize aWidth);
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nscoord GetBottomBCBorderWidth(float* aPixelsToTwips = nsnull);
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void SetBottomBCBorderWidth(BCPixelSize aWidth);
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nsMargin* GetBCBorderWidth(float aPixelsToTwips,
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nsMargin& aBorder);
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/**
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* Gets inner border widths before collapsing with cell borders
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* Caller must get bottom border from next row or from table
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* GetContinuousBCBorderWidth will not overwrite aBorder.bottom
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* see nsTablePainter about continuous borders
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*/
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void GetContinuousBCBorderWidth(float aPixelsToTwips,
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nsMargin& aBorder);
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/**
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* @returns outer top bc border == prev row's bottom inner
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*/
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nscoord GetOuterTopContBCBorderWidth(float aPixelsToTwips);
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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 right, left, and top
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*/
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void SetContinuousBCBorderWidth(PRUint8 aForSide,
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BCPixelSize aPixelValue);
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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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nsTableRowFrame();
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void InitChildReflowState(nsPresContext& aPresContext,
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const nsSize& aAvailSize,
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PRBool aBorderCollapse,
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float aPixelsToTwips,
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nsTableCellReflowState& aReflowState,
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PRBool aResetComputedWidth = PR_FALSE);
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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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/** Incremental Reflow attempts to do column balancing with the minimum number of reflow
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* commands to child elements. This is done by processing the reflow command,
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* rebalancing column widths (if necessary), then comparing the resulting column widths
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* to the prior column widths and reflowing only those cells that require a reflow.
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*
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* @see Reflow
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*/
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NS_IMETHOD IncrementalReflow(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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NS_IMETHOD IR_TargetIsChild(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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nsIFrame* aNextFrame);
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NS_IMETHOD IR_TargetIsMe(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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NS_IMETHOD IR_StyleChanged(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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// 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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NS_IMETHOD 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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PRBool aDirtyOnly = PR_FALSE);
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private:
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struct RowBits {
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unsigned mRowIndex:29;
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unsigned mHasFixedHeight:1; // set if the dominating style height on the row or any cell is pixel based
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unsigned mHasPctHeight:1; // set if the dominating style height on the row or any cell is pct based
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unsigned mFirstInserted:1; // if true, then it was the top most newly inserted row
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} mBits;
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// the desired height based on the content of the tallest cell in the row
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nscoord mContentHeight;
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// the height based on a style percentage height on either the row or any cell
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// if mHasPctHeight is set
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nscoord mStylePctHeight;
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// the height based on a style pixel height on the row or any
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// cell if mHasFixedHeight is set
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nscoord mStyleFixedHeight;
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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 mTopBorderWidth;
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BCPixelSize mBottomBorderWidth;
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BCPixelSize mRightContBorderWidth;
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BCPixelSize mTopContBorderWidth;
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BCPixelSize mLeftContBorderWidth;
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#ifdef DEBUG_TABLE_REFLOW_TIMING
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public:
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nsReflowTimer* mTimer;
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#endif
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};
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inline PRInt32 nsTableRowFrame::GetRowIndex() const
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{
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return PRInt32(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 PRBool nsTableRowFrame::IsFirstInserted() const
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{
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return PRBool(mBits.mFirstInserted);
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}
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inline void nsTableRowFrame::SetFirstInserted(PRBool aValue)
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{
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mBits.mFirstInserted = aValue;
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}
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inline PRBool nsTableRowFrame::HasStyleHeight() const
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{
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return (PRBool)mBits.mHasFixedHeight || (PRBool)mBits.mHasPctHeight;
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}
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inline PRBool nsTableRowFrame::HasFixedHeight() const
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{
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return (PRBool)mBits.mHasFixedHeight;
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}
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inline void nsTableRowFrame::SetHasFixedHeight(PRBool aValue)
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{
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mBits.mHasFixedHeight = aValue;
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}
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inline PRBool nsTableRowFrame::HasPctHeight() const
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{
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return (PRBool)mBits.mHasPctHeight;
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}
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inline void nsTableRowFrame::SetHasPctHeight(PRBool aValue)
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{
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mBits.mHasPctHeight = aValue;
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}
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inline nscoord nsTableRowFrame::GetContentHeight() const
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{
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return mContentHeight;
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}
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inline void nsTableRowFrame::SetContentHeight(nscoord aValue)
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{
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mContentHeight = aValue;
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}
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inline nscoord nsTableRowFrame::GetFixedHeight() const
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{
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if (mBits.mHasFixedHeight)
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return mStyleFixedHeight;
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else
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return 0;
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}
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inline float nsTableRowFrame::GetPctHeight() const
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{
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if (mBits.mHasPctHeight)
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return (float)mStylePctHeight / 100.0f;
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else
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return 0.0f;
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}
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inline PRBool nsTableRowFrame::NeedSpecialReflow() const
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{
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return (mState & NS_ROW_NEED_SPECIAL_REFLOW) == NS_ROW_NEED_SPECIAL_REFLOW;
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}
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inline void nsTableRowFrame::SetNeedSpecialReflow(PRBool aValue)
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{
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if (aValue) {
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mState |= NS_ROW_NEED_SPECIAL_REFLOW;
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} else {
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mState &= ~NS_ROW_NEED_SPECIAL_REFLOW;
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}
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}
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inline PRBool nsTableRowFrame::HasUnpaginatedHeight()
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{
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return (mState & NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT) ==
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NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT;
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}
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inline void nsTableRowFrame::SetHasUnpaginatedHeight(PRBool aValue)
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{
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if (aValue) {
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mState |= NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT;
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} else {
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mState &= ~NS_TABLE_ROW_HAS_UNPAGINATED_HEIGHT;
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}
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}
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inline nscoord nsTableRowFrame::GetTopBCBorderWidth(float* aPixelsToTwips)
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{
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nscoord width = (aPixelsToTwips) ? NSToCoordRound(*aPixelsToTwips * mTopBorderWidth) : mTopBorderWidth;
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return width;
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}
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inline void nsTableRowFrame::SetTopBCBorderWidth(BCPixelSize aWidth)
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{
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mTopBorderWidth = aWidth;
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}
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inline nscoord nsTableRowFrame::GetBottomBCBorderWidth(float* aPixelsToTwips)
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{
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nscoord width = (aPixelsToTwips) ? NSToCoordRound(*aPixelsToTwips * mBottomBorderWidth) : mBottomBorderWidth;
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return width;
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}
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inline void nsTableRowFrame::SetBottomBCBorderWidth(BCPixelSize aWidth)
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{
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mBottomBorderWidth = aWidth;
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}
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inline nsMargin* nsTableRowFrame::GetBCBorderWidth(float aPixelsToTwips,
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nsMargin& aBorder)
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{
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aBorder.left = aBorder.right = 0;
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aBorder.top = NSToCoordRound(aPixelsToTwips * mTopBorderWidth);
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aBorder.bottom = NSToCoordRound(aPixelsToTwips * mBottomBorderWidth);
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return &aBorder;
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}
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inline void
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nsTableRowFrame::GetContinuousBCBorderWidth(float aPixelsToTwips,
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nsMargin& aBorder)
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{
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aBorder.right = BC_BORDER_LEFT_HALF_COORD(aPixelsToTwips,
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mLeftContBorderWidth);
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aBorder.top = BC_BORDER_BOTTOM_HALF_COORD(aPixelsToTwips,
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mTopContBorderWidth);
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aBorder.left = BC_BORDER_RIGHT_HALF_COORD(aPixelsToTwips,
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mRightContBorderWidth);
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}
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inline nscoord nsTableRowFrame::GetOuterTopContBCBorderWidth(float aPixelsToTwips)
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{
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return BC_BORDER_TOP_HALF_COORD(aPixelsToTwips, mTopContBorderWidth);
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}
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#endif
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