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csbaglay.h

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00001 /*
00002     Copyright (C) Aleksandras Gluchovas
00003     CS port by Norman Krämer <norman@users.sourceforge.net>
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00020 #ifndef __CS_CSGRIDBAGLAYOUT_H__
00021 #define __CS_CSGRIDBAGLAYOUT_H__
00022 
00030 #include "cslayout.h"
00031 #include "csutil/parray.h"
00032 
00036 class csGridBagConstraint : public csLayoutConstraint
00037 {
00038 public:
00039   csGridBagConstraint (csComponent *comp);
00040   csGridBagConstraint (const csGridBagConstraint &c);
00041   csGridBagConstraint (csComponent *comp, int _gridx, int _gridy,
00042                        int _gridwidth, int _gridheight, float _weightx,
00043                        float _weighty, int _anchor, int _fill,
00044                        csRect _insets, int _ipadx, int _ipady);
00045   csLayoutConstraint *Clone ();
00046 public:
00052   int gridx;
00059   int gridy;
00064   int gridwidth;
00069   int gridheight;
00076   float weightx;
00083   float weighty;
00098   int anchor;
00105   int fill;
00109   csRect insets;
00114   int ipadx;
00119   int ipady;
00120 
00121 #undef RELATIVE
00122 #undef _LEFT
00123 #undef _CENTER
00124 
00125   enum GRID_BAG_CONSTANTS
00126   {
00127     RELATIVE   = -1,
00128     REMAINDER  = 0,
00129 
00130     NONE       = 0,
00131     BOTH       = 1,
00132     HORIZONTAL = 2,
00133     VERTICAL   = 3,
00134 
00135     CENTER    = 10,
00136     NORTH     = 11,
00137     NORTHEAST = 12,
00138     EAST      = 13,
00139     SOUTHEAST = 14,
00140     SOUTH     = 15,
00141     SOUTHWEST = 16,
00142     WEST      = 17,
00143     NORTHWEST = 18
00144   };
00145 
00147   enum  GRID_BAG_CONSTANTS_INTERNAL
00148   {
00149     _LEFT     = 20,
00150     _CENTER   = 21,
00151     _RIGHT    = 22
00152   };
00153 
00155   bool bSized;
00157   csPoint mPrefCompSize;
00158 };
00159 
00281 class csGridBagLayout : public csLayout2
00282 {
00283   struct CellInfo
00284   {
00285     csComponent* comp;
00286 
00287     int prefSize;        // actually, it can be calculated on-the-fly
00288     int prefCompSize;
00289 
00290     int cellSpan;
00291     int leftInset;
00292     int rightInset;
00293     int pad;
00294     int fill;
00295     int anchor;
00296 
00297     float extraSpace;
00298     float weight;
00299 
00300     int finalSize;
00301     int finalPos;
00302     int finalCompSize;
00303     int finalCompPos;
00304   };
00305 
00306   struct CellHolder
00307   {
00308     csGridBagConstraint* constr;
00309     float weightx;
00310     float weighty;
00311 
00312     int gridwidth;
00313     int gridheight;
00314     int actualWidth;
00315     int actualHeight;
00316 
00317     bool isFirstCellForComp;
00318     int x, y;
00319   };
00320 
00321   typedef csPDelArray<CellHolder> CellHolderArrayT;
00322 
00323  public:
00324   csGridBagLayout (csComponent *pParent);
00325   ~csGridBagLayout ();
00326 
00327   virtual void RemoveLayoutComponent (csComponent* comp);
00328   virtual void SuggestSize (int &sugw, int &sugh);
00329   virtual void LayoutContainer ();
00330 
00331   virtual void MaximumLayoutSize (int &w, int &h);
00332   virtual float GetLayoutAlignmentX ();
00333   virtual float GetLayoutAlignmentY ();
00334 
00335   csGridBagConstraint c;
00336 
00337 protected:
00338   int CalcPrefSize (CellInfo* cells, int xCnt, int yCnt, int _arrayWidth);
00339   void LayoutCells (CellInfo* cells, int xCnt, int yCnt,
00340                     int outterSize, int outterPos, int _arrayWidth );
00341 
00342   void InitializeCellArray (CellInfo* cells, int size);
00343   void InitCellFromHolder (CellHolder& holder);
00344   void CreateMatrix ();
00345   long GetCellCode (int x, int y);
00346   void CleanupConstraints ();
00347   void ClearCachedData ();
00348   bool HasCashedInfo ();
00349   void SetComponentLocations ();
00350 
00351 protected:
00352   CellInfo* mpHorizCellInfos;
00353   CellInfo* mpVertCellInfos;
00354   int mColCount;
00355   int mRowCount;
00356 };
00357 
00360 #endif // __CS_CSGRIDBAGLAYOUT_H__

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