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BasicTableLayoutStrategy.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00015  * The Original Code is mozilla.org code.
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00017  * The Initial Developer of the Original Code is
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00022  * Contributor(s):
00023  *   buster@netscape.com
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00025  * Alternatively, the contents of this file may be used under the terms of
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00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 #ifndef BasicTableLayoutStrategy_h__
00040 #define BasicTableLayoutStrategy_h__
00041 
00042 #include "nscore.h"
00043 #include "nsITableLayoutStrategy.h"
00044 #include "nsCoord.h"
00045 
00046 class nsVoidArray;
00047 class nsTableFrame;
00048 struct nsStylePosition;
00049 struct nsStyleTable;
00050 
00051 static const PRInt32 kUninitialized=-1;
00052 
00053 /* ---------- BasicTableLayoutStrategy ---------- */
00054 
00060 class BasicTableLayoutStrategy : public nsITableLayoutStrategy
00061 {
00062 public:
00063 
00068   BasicTableLayoutStrategy(nsTableFrame *aFrame,
00069                            PRBool        aIsNavQuirksMode = PR_TRUE);
00070 
00072   virtual ~BasicTableLayoutStrategy();
00073 
00078   virtual PRBool Initialize(const nsHTMLReflowState& aReflowState);
00079 
00083   virtual PRBool BalanceColumnWidths(const nsHTMLReflowState& aReflowState);
00084  
00091   virtual nscoord CalcPctAdjTableWidth(const nsHTMLReflowState& aReflowState,
00092                                        nscoord                  aAvailWidth);
00093 
00094   void Dump(PRInt32 aIndent);
00095 
00096 protected:
00097 
00107   virtual PRBool AssignNonPctColumnWidths(nscoord                  aComputedWidth,
00108                                           const nsHTMLReflowState& aReflowState);
00109 
00118   void ComputeNonPctColspanWidths(const nsHTMLReflowState& aReflowState,
00119                                   PRBool                   aConsiderPct,
00120                                   float                    aPixelToTwips,
00121                                   PRBool*                  aHasPctCol);
00122 
00137   PRBool ComputeNonPctColspanWidths(PRInt32                 aWidthIndex,
00138                                     const nsTableCellFrame* aCellFrame,
00139                                     PRInt32                 aCellWidth,
00140                                     PRInt32                 aColIndex,
00141                                     PRInt32                 aColSpan,
00142                                     PRInt32&                aLimitType,
00143                                     float                   aPixelToTwips);
00144 
00153   nscoord AssignPctColumnWidths(const nsHTMLReflowState& aReflowState,
00154                                 nscoord                  aBasis,
00155                                 PRBool                   aTableIsAutoWidth,
00156                                 float                    aPixelToTwips);
00157 
00163   void ReduceOverSpecifiedPctCols(nscoord aExcess);
00164 
00173   void CalculateTotals(PRInt32* aTotalCounts,
00174                        PRInt32* aTotalWidths,
00175                        PRInt32* aDupedWidths,
00176                        PRInt32& a0ProportionalCount);
00177 
00184   void AllocateFully(nscoord& aTotalAllocated,
00185                      PRInt32* aAllocTypes,
00186                      PRInt32  aWidthType);
00187 
00196   void AllocateConstrained(PRInt32  aAvailWidth,
00197                            PRInt32  aWidthType,
00198                            PRBool   aStartAtMin,        
00199                            PRInt32* aAllocTypes,
00200                            float    aPixelToTwips);
00201 
00212   void AllocateUnconstrained(PRInt32  aAllocAmount,
00213                              PRInt32* aAllocTypes,
00214                              PRBool   aExcludePct,
00215                              PRBool   aExcludeFix,
00216                              PRBool   aExcludePro,
00217                              PRBool   aExclude0Pro,
00218                              float    aPixelToTwips);
00219 
00223   void ContinuingFrameCheck();
00224 
00225 protected:
00226   nsTableFrame * mTableFrame;
00227   PRInt32        mCols;
00228   // cached data
00229   nscoord        mCellSpacingTotal;       // all of the cellspacing for all of the cols
00230   float          mMinToDesProportionRatio;
00231   PRPackedBool   mIsNavQuirksMode;
00232 };
00233 #endif
00234