dab/box.h

   1 /*      $NetBSD: box.h,v 1.1.1.1 2003/12/26 17:57:03 christos 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  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38
  39 /*
  40  * box.C: Single box utilities; A box is an entity with four edges, four
  41  *        corners, and a center that maps directly to a board
  42  */
  43
  44 #ifndef _H_BOX
  45 #define _H_BOX
  46
  47 #include <stdlib.h>
  48
  49 class BOARD;
  50
  51 class POINT {
  52   public:
  53     int x;
  54     int y;
  55 };
  56
  57 class BOX {
  58   public:
  59     enum EDGE {
  60         first  = 0,
  61         top    = 0,
  62         bottom = 1,
  63         left   = 2,
  64         right  = 3,
  65         last   = 4,
  66     };
  67
  68     BOX(size_t py, size_t px, BOARD& b);
  69
  70     void reset(void);           // Clear a box
  71     void paint(void);           // Paint a box
  72
  73     // Member access
  74     int& name(void);
  75     int& edge(int e);
  76
  77     // Edge maniputations
  78     void set(int e);
  79     void clr(int e);
  80     int isset(int e) const;
  81
  82     int count(void) const;      // Count the number of edges in use
  83
  84     // Useful constants
  85     // Relative coordinates of the edges from the center of the box.
  86     static const POINT edges[BOX::last];
  87     // Relative coordinates of the corners from the center of the box.
  88     static const POINT corners[BOX::last];
  89     // Character symbols of the four edges
  90     static const int syms[BOX::last];
  91
  92   private:
  93     void addcorner(size_t y, size_t x); // add a corner character
  94
  95     size_t _centerx;    // Coordinates of the center in board units
  96     size_t _centery;
  97     BOARD& _b;          // The board we refer to
  98 };
  99
 100 #endif