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330 lines
10 KiB
C++
330 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 Init(PRInt32 aRowSpan, PRInt32 aColSpan, PRInt32 aColIndex);
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static nsresult NewFrame(nsIFrame** aInstancePtrResult,
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nsIContent* aContent,
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nsIFrame* aParent);
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// nsISupports
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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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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/** Get the TableFrame that contains this cell frame */
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virtual nsTableFrame* GetTableFrame();
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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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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 MapTextAttributes(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 number of rows spanned by this cell */
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int mRowSpan;
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/** the number of columns spanned by this cell */
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int mColSpan;
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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::Init(PRInt32 aRowSpan, PRInt32 aColSpan, PRInt32 aColIndex)
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{
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NS_PRECONDITION(0<aRowSpan, "bad row span arg");
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NS_PRECONDITION(0<aColSpan, "bad col span arg");
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NS_PRECONDITION(0<=aColIndex, "bad col index arg");
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mRowSpan = aRowSpan;
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mColSpan = aColSpan;
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mColIndex = aColIndex;
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}
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inline PRInt32 nsTableCellFrame::GetRowSpan()
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{ return mRowSpan;}
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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::GetColSpan()
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{ return mColSpan;}
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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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