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0bec735087
table frames no longer assume they are n levels below the inner table frame table frames no longer assume their child frames are always the expected type of frame. Now they check the display type and use that as sufficient proof that the frame is of the right type. This implies a heavy reliance on the frame construction code to do the right thing and always stamp out the right kind of frame for a given display type.
322 lines
10 KiB
C++
322 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsTableCellFrame_h__
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#define nsTableCellFrame_h__
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#include "nscore.h"
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#include "nsContainerFrame.h"
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#include "nsTableFrame.h"
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#include "nsTableRowFrame.h" // need to actually include this here to inline GetRowIndex
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struct nsStyleSpacing;
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/* eb42f7b0-079e-11d2-8f37-006008159b0c */
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#define NS_TABLECELLFRAME_CID \
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{0xeb42f7b0, 0x079e, 0x11d2, {0x8f, 0x37, 0x00, 0x60, 0x08, 0x15, 0x9b, 0x0c}}
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extern const nsIID kTableCellFrameCID;
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/**
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* nsTableCellFrame
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* data structure to maintain information about a single table cell's frame
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*
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* @author sclark
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*/
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class nsTableCellFrame : public nsContainerFrame
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{
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public:
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void InitCellFrame(PRInt32 aColIndex);
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/** instantiate a new instance of nsTableCellFrame.
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* @param aResult the new object is returned in this out-param
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* @param aContent the table object to map
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* @param aParent the parent of the new frame
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*
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* @return NS_OK if the frame was properly allocated, otherwise an error code
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*/
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friend nsresult
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NS_NewTableCellFrame(nsIContent* aContent,
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nsIFrame* aParentFrame,
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nsIFrame*& aResult);
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// nsISupports
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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NS_IMETHOD Init(nsIPresContext& aPresContext, nsIFrame* aChildList);
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsReflowMetrics& aDesiredSize,
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const nsReflowState& aReflowState,
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nsReflowStatus& aStatus);
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/**
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* @see nsContainerFrame
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*/
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NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext,
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nsIFrame* aParent,
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nsIStyleContext* aStyleContext,
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nsIFrame*& aContinuingFrame);
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void VerticallyAlignChild(nsIPresContext* aPresContext);
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/** return the mapped cell's row span. Always >= 1. */
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virtual PRInt32 GetRowSpan();
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// there is no set row index because row index depends on the cell's parent row only
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/** return the mapped cell's row index (starting at 0 for the first row) */
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virtual PRInt32 GetRowIndex();
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/** return the mapped cell's col span. Always >= 1. */
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virtual PRInt32 GetColSpan();
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/** return the mapped cell's column index (starting at 0 for the first column) */
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virtual PRInt32 GetColIndex();
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/** set the index of the column belonging to this cell */
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// XXX should be removed, use cell map?
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virtual void SetColIndex (int aColIndex);
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/** return the available width given to this frame during its last reflow */
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virtual nscoord GetPriorAvailWidth();
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/** set the available width given to this frame during its last reflow */
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virtual void SetPriorAvailWidth(nscoord aPriorAvailWidth);
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/** return the desired size returned by this frame during its last reflow */
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virtual nsSize GetDesiredSize();
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/** set the desired size returned by this frame during its last reflow */
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virtual void SetDesiredSize(const nsReflowMetrics & aDesiredSize);
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/** return the MaxElement size returned by this frame during its last reflow
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* not counting reflows where MaxElementSize is not requested.
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* That is, the cell frame will always remember the last non-null MaxElementSize
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*/
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virtual nsSize GetMaxElementSize();
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/** set the MaxElement size returned by this frame during its last reflow.
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* should never be called with a null MaxElementSize
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*/
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virtual void SetMaxElementSize(const nsSize & aMaxElementSize);
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/** return the desired size returned by this frame during its last reflow */
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virtual nsSize GetPass1DesiredSize();
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/** set the desired size returned by this frame during its last reflow */
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virtual void SetPass1DesiredSize(const nsReflowMetrics & aDesiredSize);
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/** return the MaxElement size returned by this frame during its last reflow
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* not counting reflows where MaxElementSize is not requested.
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* That is, the cell frame will always remember the last non-null MaxElementSize
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*/
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virtual nsSize GetPass1MaxElementSize();
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/** set the MaxElement size returned by this frame during its last reflow.
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* should never be called with a null MaxElementSize
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*/
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virtual void SetPass1MaxElementSize(const nsSize & aMaxElementSize);
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void RecalcLayoutData(nsTableFrame* aTableFrame,
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nsVoidArray* aBoundaryCells[4]);
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NS_IMETHOD GetMargin(nsMargin& aMargin);
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/** destructor */
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virtual ~nsTableCellFrame();
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private:
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// All these methods are support methods for RecalcLayoutData
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nsIFrame* GetFrameAt(nsVoidArray* aList, PRInt32 aIndex);
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nscoord GetMargin(nsIFrame* aFrame, PRUint8 aEdge) const;
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nscoord GetBorderWidth(nsIFrame* aFrame, PRUint8 aEdge) const;
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nscoord GetPadding(nsIFrame* aFrame, PRUint8 aEdge) const;
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PRUint8 GetOpposingEdge(PRUint8 aEdge);
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nsIFrame* CompareCellBorders(nsIFrame* aFrame1,
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PRUint8 aEdge1,
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nsIFrame* aFrame2,
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PRUint8 aEdge2);
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nsIFrame* FindHighestPrecedentBorder(nsVoidArray* aList,
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PRUint8 aEdge);
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nsIFrame* FindInnerBorder( nsVoidArray* aList,
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PRUint8 aEdge);
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nsIFrame* FindOuterBorder( nsTableFrame* aTableFrame,
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PRUint8 aEdge);
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nsIFrame* FindBorderFrame(nsTableFrame* aTableFrame,
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nsVoidArray* aCellList,
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PRUint8 aEdge);
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void CalculateBorders(nsTableFrame* aTableFrame,
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nsVoidArray* aBoundaryCells[4]);
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nscoord FindLargestMargin(nsVoidArray* aList,PRUint8 aEdge);
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void CalculateMargins(nsTableFrame* aTableFrame,
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nsVoidArray* aBoundaryCells[4]);
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NS_IMETHOD List(FILE* out = stdout, PRInt32 aIndent = 0, nsIListFilter *aFilter = nsnull) const;
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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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nsTableCellFrame(nsIContent* aContent,
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nsIFrame* aParentFrame);
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/** Create a psuedo-frame for this cell. Handles continuing frames as needed.
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*/
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virtual void CreatePsuedoFrame(nsIPresContext* aPresContext);
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// Subclass hook for style post processing
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NS_IMETHOD DidSetStyleContext(nsIPresContext* aPresContext);
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void MapBorderMarginPadding(nsIPresContext* aPresContext);
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void MapHTMLBorderStyle(nsIPresContext* aPresContext,nsStyleSpacing& aSpacingStyle, nscoord aBorderWidth);
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PRBool ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult);
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protected:
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/** the starting column for this cell */
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int mColIndex;
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/** the available width we were given in our previous reflow */
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nscoord mPriorAvailWidth;
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/** these are the last computed desired and max element sizes */
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nsSize mDesiredSize;
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nsSize mMaxElementSize;
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/** these are the Pass 1 unconstrained desired and max element sizes */
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nsSize mPass1DesiredSize;
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nsSize mPass1MaxElementSize;
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nsresult mCalculated;
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nsMargin mMargin;
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nsIFrame* mBorderFrame[4]; // the frame whose border is used
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};
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inline void nsTableCellFrame::InitCellFrame(PRInt32 aColIndex)
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{
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NS_PRECONDITION(0<=aColIndex, "bad col index arg");
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mColIndex = aColIndex;
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}
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inline PRInt32 nsTableCellFrame::GetRowIndex()
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{
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nsTableRowFrame * row;
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GetContentParent((nsIFrame *&)row);
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if (nsnull!=row)
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return row->GetRowIndex();
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else
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return 0;
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}
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inline PRInt32 nsTableCellFrame::GetColIndex()
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{ return mColIndex;}
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inline void nsTableCellFrame::SetColIndex (int aColIndex)
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{
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NS_ASSERTION(0<=aColIndex, "illegal negative column index.");
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mColIndex = aColIndex;
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}
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inline nscoord nsTableCellFrame::GetPriorAvailWidth()
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{ return mPriorAvailWidth;}
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inline void nsTableCellFrame::SetPriorAvailWidth(nscoord aPriorAvailWidth)
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{ mPriorAvailWidth = aPriorAvailWidth;}
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inline nsSize nsTableCellFrame::GetDesiredSize()
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{ return mDesiredSize; }
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inline void nsTableCellFrame::SetDesiredSize(const nsReflowMetrics & aDesiredSize)
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{
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mDesiredSize.width = aDesiredSize.width;
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mDesiredSize.height = aDesiredSize.height;
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}
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inline nsSize nsTableCellFrame::GetMaxElementSize()
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{ return mMaxElementSize; }
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inline void nsTableCellFrame::SetMaxElementSize(const nsSize & aMaxElementSize)
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{
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mMaxElementSize.width = aMaxElementSize.width;
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mMaxElementSize.height = aMaxElementSize.height;
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}
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inline nsSize nsTableCellFrame::GetPass1DesiredSize()
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{ return mPass1DesiredSize; }
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inline void nsTableCellFrame::SetPass1DesiredSize(const nsReflowMetrics & aDesiredSize)
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{
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mPass1DesiredSize.width = aDesiredSize.width;
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mPass1DesiredSize.height = aDesiredSize.height;
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}
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inline nsSize nsTableCellFrame::GetPass1MaxElementSize()
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{ return mPass1MaxElementSize; }
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inline void nsTableCellFrame::SetPass1MaxElementSize(const nsSize & aMaxElementSize)
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{
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mPass1MaxElementSize.width = aMaxElementSize.width;
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mPass1MaxElementSize.height = aMaxElementSize.height;
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}
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inline void nsTableCellFrame::CalculateBorders(nsTableFrame* aTableFrame,
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nsVoidArray* aBoundaryCells[4])
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{
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for (PRInt32 edge = 0; edge < 4; edge++)
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mBorderFrame[edge] = FindBorderFrame(aTableFrame, aBoundaryCells[edge], edge);
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}
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inline NS_METHOD nsTableCellFrame::GetMargin(nsMargin& aMargin)
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{
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if (mCalculated == NS_OK)
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{
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aMargin = mMargin;
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return NS_OK;
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}
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return NS_ERROR_NOT_INITIALIZED;
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}
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#endif
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