dab/box.h

   1 /*      $NetBSD: box.h,v 1.2 2008/04/28 20:22:53 martin Exp $   */
   2
   3 /*-
   4  * Copyright (c) 2003 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * box.C: Single box utilities; A box is an entity with four edges, four
  34  *        corners, and a center that maps directly to a board
  35  */
  36
  37 #ifndef _H_BOX
  38 #define _H_BOX
  39
  40 #include <stdlib.h>
  41
  42 class BOARD;
  43
  44 class POINT {
  45   public:
  46     int x;
  47     int y;
  48 };
  49
  50 class BOX {
  51   public:
  52     enum EDGE {
  53         first  = 0,
  54         top    = 0,
  55         bottom = 1,
  56         left   = 2,
  57         right  = 3,
  58         last   = 4,
  59     };
  60
  61     BOX(size_t py, size_t px, BOARD& b);
  62
  63     void reset(void);           // Clear a box
  64     void paint(void);           // Paint a box
  65
  66     // Member access
  67     int& name(void);
  68     int& edge(int e);
  69
  70     // Edge maniputations
  71     void set(int e);
  72     void clr(int e);
  73     int isset(int e) const;
  74
  75     int count(void) const;      // Count the number of edges in use
  76
  77     // Useful constants
  78     // Relative coordinates of the edges from the center of the box.
  79     static const POINT edges[BOX::last];
  80     // Relative coordinates of the corners from the center of the box.
  81     static const POINT corners[BOX::last];
  82     // Character symbols of the four edges
  83     static const int syms[BOX::last];
  84
  85   private:
  86     void addcorner(size_t y, size_t x); // add a corner character
  87
  88     size_t _centerx;    // Coordinates of the center in board units
  89     size_t _centery;
  90     BOARD& _b;          // The board we refer to
  91 };
  92
  93 #endif