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box.h revision 1.1 
      1 /*	$NetBSD: box.h,v 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
    101