motif_l/m_motif.h

   1 /*-
   2  * Copyright (c) 1996
   3  *      Rob Zimmermann.  All rights reserved.
   4  * Copyright (c) 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  *
   9  *      "$Id: m_motif.h,v 8.7 1996/12/13 11:38:21 bostic Exp $ (Berkeley) $Date: 1996/12/13 11:38:21 $";
  10  */
  11
  12 /* Describes a single 'screen' implemented in X widgetry. */
  13 typedef struct {
  14     Widget      parent,         /* the pane */
  15                 area,           /* text goes here */
  16                 form,           /* holds text and scrollbar */
  17                 scroll;         /* not connected yet */
  18     Region      clip;
  19     int         color;
  20     int         rows,
  21                 cols;
  22     int         ch_width,
  23                 ch_height,
  24                 ch_descent;
  25     int         curx, cury;
  26     char        *characters;
  27     char        *flags;
  28     Boolean     init;
  29 } xvi_screen;
  30
  31 /*
  32  * Color support
  33  */
  34 #define COLOR_INVALID   0xff    /* force color change */
  35
  36 /*
  37  * These are color indices.  When vi passes color info, we can do 2..0x3f
  38  * in the 8 bits I've allocated.
  39  */
  40 #define COLOR_STANDARD  0x00    /* standard video */
  41 #define COLOR_INVERSE   0x01    /* reverse video */
  42
  43 /* These are flag bits, they override the above colors. */
  44 #define COLOR_CARET     0x80    /* draw the caret */
  45 #define COLOR_SELECT    0x40    /* draw the selection */
  46
  47 #define ToRowCol( scr, lin, r, c )      \
  48             r = (lin) / scr->cols;      \
  49             c = ((lin) - r * (scr->cols)) % scr->cols;
  50 #define Linear( scr, y, x )     \
  51             ( (y) * scr->cols + (x) )
  52 #define CharAt( scr, y, x )     \
  53             ( scr->characters + Linear( scr, y, x ) )
  54 #define FlagAt( scr, y, x )     \
  55             ( scr->flags + Linear( scr, y, x ) )
  56
  57 #define XPOS( scr, x )  \
  58         scr->ch_width * (x)
  59 #define YTOP( scr, y )  \
  60         scr->ch_height * (y)
  61 #define YPOS( scr, y )  \
  62         YTOP( scr, ((y)+1) ) - scr->ch_descent
  63
  64 #define ROW( scr, y )   \
  65         ( (y) / scr->ch_height )
  66
  67 #define COLUMN( scr, x )        \
  68         ( (x) / scr->ch_width )
  69
  70 /* Internal use: */
  71 extern GC          __vi_copy_gc;
  72 extern void      (*__vi_exitp) __P((void));
  73 extern xvi_screen *__vi_screen;