texinfo/info/window.c

78      here, and it must be at least 1 line for display.  The size of the
558 /* Toggle the state of line wrapping in WINDOW.  This can do a bit of fancy
583          to speed up the display.  Many of the line starts will be the same,
785 /* Calculate a list of line starts for the node belonging to WINDOW.  The line
803   /* Grovel the node starting at the top, and for each line calculate the
804      width of the characters appearing in that line.  Add each line start
812       char *line = node->contents + i;
815       add_pointer_to_array (line, line_starts_index, line_starts,
853           /* If this character fits within this line, just do the next one. */
863                  the next printed screen line, then do the next line. */
874                      line start as where this character is.  A bit tricky. */
877                      physical line here. */
901 /* Given WINDOW, recalculate the line starts for the node it displays. */
912    set to zero, the line containing point is centered within the window. */
919   register int line = 0;
927   /* Find the first printed line start which is after WINDOW->point. */
928   for (line = 0; line < window->line_count; line++)
932       line_start = window->line_starts[line];
938   /* The line index preceding the line start which is past point is the
940   line--;
942   /* If this line appears in the current displayable page, do nothing.
943      Otherwise, adjust the top of the page to make this line visible. */
944   if ((line < window->pagetop) ||
945       (line - window->pagetop > (window->height - 1)))
949          is zero, then the line containing point is centered within
953           if ((line < window->pagetop) &&
954               ((window->pagetop - window_scroll_step) <= line))
956           else if ((line - window->pagetop > (window->height - 1)) &&
957                    ((line - (window->pagetop + window_scroll_step)
961             window->pagetop = line - ((window->height - 1) / 2);
964         window->pagetop = line - ((window->height - 1) / 2);
972 /* Return the index of the line containing point. */
1014   char *line;
1021   line = window->line_starts[i];
1022   end = window->point - (line - window->node->contents);
1028 	  && line[i] == '\033'
1029 	  && line[i+1] == '['
1030 	  && isdigit (line[i+2]))
1032 	  if (line[i+3] == 'm')
1034 	  else if (isdigit (line[i+3]) && line[i+4] == 'm')
1037 	    hpos += character_width (line[i], hpos);
1040 	hpos += character_width (line[i], hpos);
1049 window_chars_to_goal (char *line, int goal)
1053   for (hpos = 0, i = 0; line[i] != '\n'; i++)
1057 	  && line[i] == '\033'
1058 	  && line[i+1] == '['
1059 	  && isdigit (line[i+2])
1060 	  && (line[i+3] == 'm'
1061 	      || (isdigit (line[i+3]) && line[i+4] == 'm')))
1062 	while (line[i] != 'm')
1065 	check = hpos + character_width (line[i], hpos);
1149        node, and the remainder of the text that can appear in the line. */
1524    recently output message buffer line. */