src/piecepool.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@sns.it>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #ifndef __PIECEPOOL_H__
  12 #define __PIECEPOOL_H__
  13
  14 #include <boost/shared_ptr.hpp>
  15 #include "piecegroup.h"
  16 #include "namedsprite.h"
  17
  18 /**
  19   * @class PiecePool <piecepool.h>
  20   * @brief The class representing a crazyhouse-like piece pool.
  21   *
  22   * PiecePool is a canvas item attached to a Board that keeps a
  23   * stack of pieces and lets you drop them on the board, notifying
  24   * the board.
  25   */
  26 class PiecePool : public PieceGroup {
  27 public:
  28   typedef Grid<NamedSprite> PieceGrid;
  29
  30 private:
  31   /** displayed m_sprites */
  32   PieceGrid   m_sprites;
  33
  34   /** refrence board */
  35   class Board* m_board;
  36
  37   /** the piece that is being dragged, if any */
  38   NamedSprite m_dragged;
  39
  40   /** the number of pieces on the pool */
  41   int m_fill;
  42
  43   /** internal, resizes the grid vector to hold x pieces */
  44   void setFill(int x);
  45
  46   /** redefinition of PointConverter::flipPoint
  47       if the PiecePool is flipped it will be drawn using the position as
  48       lower bound. Further, the points are ordered in a snake-like way */
  49   virtual Point flipPoint(const Point& p) const; //custom flip function
  50
  51   /** removes the drag putting it back together with his friends in the pool.
  52       if fadeOff is true the current drag will fade off while a new piece will
  53       fade in the pool, while if fadeOff is false the fade off is no done.
  54       fadeOff will typically be false if the piece sprite has been used in the
  55       board and we don't want a clone that is fading off */
  56   void clearDrag(bool fadeOff = true);
  57
  58   /** this internal function updates the sprite images after the board has been resized  */
  59   void updateSprites();
  60
  61   /** fetch the sprite */
  62   boost::shared_ptr<Sprite> spriteAt(const Point& p) { return m_sprites[p].sprite(); }
  63
  64   /** takes the named sprite */
  65   NamedSprite takeNamedSprite(const Point& p);
  66
  67 public:
  68   friend class GraphicalSystem;
  69   friend class ChessTable;
  70
  71   /** Constructor, requires the board the pool will be attached to */
  72   PiecePool(Board* b, Canvas::Abstract* parent);
  73   ~PiecePool();
  74
  75
  76
  77   /** returns the number of pieces in the pool */
  78   int fill();
  79
  80   /** removes all the pieces */
  81   void clear();
  82
  83   /** adds a piece to the pool */
  84   void insertSprite(int index, const NamedSprite& sprite);
  85
  86   /** \return the piece at the given index. */
  87   SpritePtr getSprite(int index);
  88
  89   /** removes the piece at the given index from the pool and returns it. */
  90   SpritePtr takeSprite(int index);
  91
  92
  93
  94   /** sets the width of the grid (the fill will stay the same, and the
  95       grid height will be recalculated) */
  96   void setGridWidth(int w);
  97
  98   /** \return the size of the grid */
  99   virtual Point gridSize() const { return m_sprites.getSize(); }
 100
 101   /** piecesGroup overload */
 102   virtual Canvas::Abstract* piecesGroup();
 103
 104   /** the rect that will be covered by the pool */
 105   virtual QRect boardRect() { return QRect(pos(), QSize(m_square_size*gridSize().x,
 106                                   (flipped()?-1:1)*m_square_size*gridSize().y)); }
 107
 108   /** flips and moves the pool at the same time */
 109   void flipAndMoveBy(QPoint p);
 110
 111   /** mouse release event  */
 112   virtual void onMouseRelease(const QPoint& pos, int button);
 113
 114   /** mouse press event  */
 115   virtual void onMousePress(const QPoint& pos, int button);
 116
 117   /** mouse move event  */
 118   virtual void onMouseMove(const QPoint& pos, int button);
 119
 120   /** resize event (new_size is the new size of a SQUARE) */
 121   virtual void onResize(int new_size, bool force_reload = false);
 122
 123   /** changed settings handler */
 124   virtual void settingsChanged();
 125 };
 126
 127 #endif //__PIECEPOOL_H__