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pieces.h

/* $Id: pieces.h,v 1.24 2002/10/19 20:07:26 bergo Exp $ */

/*

    eboard - chess client
    http://eboard.sourceforge.net
    Copyright (C) 2000-2002 Felipe Paulo Guazzi Bergo
    bergo@seul.org

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/



#ifndef PIECES_H
#define PIECES_H 1

#include <gdk_imlib.h>
#include "stl.h"
#include "eboard.h"
#include "util.h"

class PReq {
 public:
  PReq(piece a, rgbptr b, int c, int d, int e, bool f);
  int operator< (PReq * a);
  int operator> (PReq * a);

  piece  p;
  rgbptr dest;
  int    x, y, dwidth;
  bool   onlytop;
};

class ColorSpace {
 public:

  int RGB2YCbCr(int triplet);
  int YCbCr2RGB(int triplet);
  int lighter(int triplet);
  int darker(int triplet);

  int pixr(int triplet);
  int pixg(int triplet);
  int pixb(int triplet);
  int pixel(int r,int g,int b);

};

class PieceSet : public ColorSpace {
 public:
  PieceSet(string &name, string &sqname); 
  PieceSet(PieceSet *src);
  ~PieceSet();

  string &getName();
  string &getSquareName();

  int  side;
  bool extruded; // pieces can be taller than one square
  int  height;   // in extruded sets only
  
  void scale(int newside); 

  void drawPiece(piece p,rgbptr dest,int x,int y,int dwidth);
  void drawSquare(int dark,rgbptr dest,int x,int y,int dwidth);

  // much faster than calling the previous two, since this class will
  // keep a cache of square+piece
  void drawPieceAndSquare(piece p,rgbptr dest,int x,int y,int dwidth,
                    int sqdark);

  // fast fully masked draw
  void drawPiece(piece p,GdkPixmap *dest,GdkGC *gc,int x,int y);
  
  void drawOutlinedPiece(piece p,GdkPixmap *dest,GdkGC *gc,
                   int x,int y,bool white);

  // for extruded sets
  void beginQueueing();
  void endQueueing();
  
  void bitblt(rgbptr src,rgbptr dest,int sx,int sy,int sw,
            int dx,int dy,int dw,int w,int h);

 private:
  string         Name;
  string         SqName;
  int            bgcolor;
  GdkImlibImage *isrc;  
  rgbptr         alphamask;
  bool           bottom_only, top_only, queuef;
  list<PReq *>   myq; // looks like a list but it's a queue ;-)

  rgbptr xxcache[24];
  piece  cacheindex[256];

  void initCache();
  void buildCache();
  void clearCache();

  GdkImlibImage *FallbackLoad();

  void loadSquares(string &path);

  void calcAlphaMask();

  void bitblt_a(rgbptr src,rgbptr dest,int sx,int sy,int sw,
            int dx,int dy,int dw,int w,int h);
  void rect_outline(rgbptr img,int x,int y,int w,int h,int iw);

  int  getPixel(int x,int y);
  void setPixel(int x,int y,int v);
  void xSetPixel(rgbptr img,int x,int y,int v);
  int  alpha(int x,int y);

  void queueRequest(PReq *r);

  GdkImlibImage * gimp_scale_preserve(GdkImlibImage *src,
                              rgbptr alpha,
                              int nw,int nh);


  GdkImlibImage * gimp_scale(GdkImlibImage *src,
                       int nw,int nh);
};

class VecDetail {
 public:
  void add(int a,int b,int c,int d);
  void draw(GdkPixmap *dest, GdkGC *gc,int x,int y,int sz1,int sz2);
 private:
  vector<int> x1, y1, x2, y2;
};

class VectorPieces {
 public:
  VectorPieces();

  void drawSquares(GdkPixmap *dest,GdkGC *gc,int sqside, int dx=0, int dy=0);
  void drawPiece(GdkPixmap *dest,GdkGC *gc,int sqside,int x,int y,piece p);

 private:
  static GdkPoint srcpiece[376];
  GdkPoint vec[376];

  int orig_sqside;
  int cur_sqside;

  void rescale(int newsqside);
  int np[6];
  int offset[6];
  VecDetail details[6];
};

#endif

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