src/help.h

   1
   2 /** \file help.h
   3  *  \brief Header: hypertext file browser
   4  *
   5  *  Implements the hypertext file viewer.
   6  *  The hypertext file is a file that may have one or more nodes.  Each
   7  *  node ends with a ^D character and starts with a bracket, then the
   8  *  name of the node and then a closing bracket. Right after the closing
   9  *  bracket a newline is placed. This newline is not to be displayed by
  10  *  the help viewer and must be skipped - its sole purpose is to faciliate
  11  *  the work of the people managing the help file template (xnc.hlp) .
  12  *
  13  *  Links in the hypertext file are specified like this: the text that
  14  *  will be highlighted should have a leading ^A, then it comes the
  15  *  text, then a ^B indicating that highlighting is done, then the name
  16  *  of the node you want to link to and then a ^C.
  17  *
  18  *  The file must contain a ^D at the beginning and at the end of the
  19  *  file or the program will not be able to detect the end of file.
  20  *
  21  *  Lazyness/widgeting attack: This file does use the dialog manager
  22  *  and uses mainly the dialog to achieve the help work.  there is only
  23  *  one specialized widget and it's only used to forward the mouse messages
  24  *  to the appropiate routine.
  25  *
  26  *  This file is included by help.c and man2hlp.c
  27  */
  28
  29 #ifndef MC_HELP_H
  30 #define MC_HELP_H
  31
  32 #define HELP_TEXT_WIDTH 58
  33
  34 /* Markers used in the help files */
  35 #define CHAR_LINK_START         '\01'   /* Ctrl-A */
  36 #define CHAR_LINK_POINTER       '\02'   /* Ctrl-B */
  37 #define CHAR_LINK_END           '\03'   /* Ctrl-C */
  38 #define CHAR_NODE_END           '\04'   /* Ctrl-D */
  39 #define CHAR_ALTERNATE          '\05'   /* Ctrl-E */
  40 #define CHAR_NORMAL             '\06'   /* Ctrl-F */
  41 #define CHAR_VERSION            '\07'   /* Ctrl-G */
  42 #define CHAR_FONT_BOLD          '\010'  /* Ctrl-H */
  43 #define CHAR_FONT_NORMAL        '\013'  /* Ctrl-K */
  44 #define CHAR_FONT_ITALIC        '\024'  /* Ctrl-T */
  45
  46 void interactive_display (const char *filename, const char *node);
  47
  48 #endif