pith/bitmap.h

   1 /*
   2  * $Id: bitmap.h 761 2007-10-23 22:35:18Z hubert@u.washington.edu $
   3  *
   4  * ========================================================================
   5  * Copyright 2006 University of Washington
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * ========================================================================
  14  */
  15
  16 #ifndef PITH_BITMAP_INCLUDED
  17 #define PITH_BITMAP_INCLUDED
  18
  19
  20 #include "../pith/conftype.h"
  21
  22
  23 /*
  24  * Max size of a bitmap based on largest customer: feature list count
  25  * Problems if a screen's keymenu bitmap ever gets wider than feature list.
  26  */
  27 #define BM_SIZE                 ((F_FEATURE_LIST_COUNT / 8)                \
  28                                       + ((F_FEATURE_LIST_COUNT % 8) ? 1 : 0))
  29
  30 typedef unsigned char bitmap_t[BM_SIZE];
  31
  32 /* clear entire bitmap */
  33 #define clrbitmap(map)          memset((void *)(map), 0, (size_t)BM_SIZE)
  34
  35 /* set entire bitmap */
  36 #define setbitmap(map)          memset((void *)(map), 0xff, (size_t)BM_SIZE)
  37
  38
  39 #endif /* PITH_BITMAP_INCLUDED */