payloads/libpayload/curses/PDCurses/x11/sb.c

   1 /* Public Domain Curses */
   2
   3 #include "pdcx11.h"
   4
   5 RCSID("$Id: sb.c,v 1.27 2008/07/14 04:24:52 wmcbrine Exp $")
   6
   7 /*man-start**************************************************************
   8
   9   Name:                                                          sb
  10
  11   Synopsis:
  12         int sb_init(void)
  13         int sb_set_horz(int total, int viewport, int cur)
  14         int sb_set_vert(int total, int viewport, int cur)
  15         int sb_get_horz(int *total, int *viewport, int *cur)
  16         int sb_get_vert(int *total, int *viewport, int *cur)
  17         int sb_refresh(void);
  18
  19   Description:
  20         These functions manipulate the scrollbar.
  21
  22   Return Value:
  23         All functions return OK on success and ERR on error.
  24
  25   Portability                                X/Open    BSD    SYS V
  26         sb_init                                 -       -       -
  27         sb_set_horz                             -       -       -
  28         sb_set_vert                             -       -       -
  29         sb_get_horz                             -       -       -
  30         sb_get_vert                             -       -       -
  31         sb_refresh                              -       -       -
  32
  33 **man-end****************************************************************/
  34
  35 bool sb_started = FALSE;
  36
  37 /* sb_init() is the sb initialization routine.
  38    This must be called before initscr(). */
  39
  40 int sb_init(void)
  41 {
  42     PDC_LOG(("sb_init() - called\n"));
  43
  44     if (SP)
  45         return ERR;
  46
  47     sb_started = TRUE;
  48
  49     return OK;
  50 }
  51
  52 /* sb_set_horz() - Used to set horizontal scrollbar.
  53
  54    total = total number of columns
  55    viewport = size of viewport in columns
  56    cur = current column in total */
  57
  58 int sb_set_horz(int total, int viewport, int cur)
  59 {
  60     PDC_LOG(("sb_set_horz() - called: total %d viewport %d cur %d\n",
  61              total, viewport, cur));
  62
  63     if (!SP)
  64         return ERR;
  65
  66     SP->sb_total_x = total;
  67     SP->sb_viewport_x = viewport;
  68     SP->sb_cur_x = cur;
  69
  70     return OK;
  71 }
  72
  73 /* sb_set_vert() - Used to set vertical scrollbar.
  74
  75    total = total number of columns on line
  76    viewport = size of viewport in columns
  77    cur = current column in total */
  78
  79 int sb_set_vert(int total, int viewport, int cur)
  80 {
  81     PDC_LOG(("sb_set_vert() - called: total %d viewport %d cur %d\n",
  82              total, viewport, cur));
  83
  84     if (!SP)
  85         return ERR;
  86
  87     SP->sb_total_y = total;
  88     SP->sb_viewport_y = viewport;
  89     SP->sb_cur_y = cur;
  90
  91     return OK;
  92 }
  93
  94 /* sb_get_horz() - Used to get horizontal scrollbar.
  95
  96    total = total number of lines
  97    viewport = size of viewport in lines
  98    cur = current line in total */
  99
 100 int sb_get_horz(int *total, int *viewport, int *cur)
 101 {
 102     PDC_LOG(("sb_get_horz() - called\n"));
 103
 104     if (!SP)
 105         return ERR;
 106
 107     if (total)
 108         *total = SP->sb_total_x;
 109     if (viewport)
 110         *viewport = SP->sb_viewport_x;
 111     if (cur)
 112         *cur = SP->sb_cur_x;
 113
 114     return OK;
 115 }
 116
 117 /* sb_get_vert() - Used to get vertical scrollbar.
 118
 119    total = total number of lines
 120    viewport = size of viewport in lines
 121    cur = current line in total */
 122
 123 int sb_get_vert(int *total, int *viewport, int *cur)
 124 {
 125     PDC_LOG(("sb_get_vert() - called\n"));
 126
 127     if (!SP)
 128         return ERR;
 129
 130     if (total)
 131         *total = SP->sb_total_y;
 132     if (viewport)
 133         *viewport = SP->sb_viewport_y;
 134     if (cur)
 135         *cur = SP->sb_cur_y;
 136
 137     return OK;
 138 }
 139
 140 /* sb_refresh() - Used to draw the scrollbars. */
 141
 142 int sb_refresh(void)
 143 {
 144     PDC_LOG(("sb_refresh() - called\n"));
 145
 146     if (!SP)
 147         return ERR;
 148
 149     XCursesInstruct(CURSES_REFRESH_SCROLLBAR);
 150
 151     return OK;
 152 }