lily/dimen.cc

   1 #include <ctype.h>
   2 #include "dimension.hh"
   3 #include "debug.hh"
   4 #include "string.hh"
   5
   6 Real
   7 parse_dimen (String dim)
   8 {
   9   int i=dim.length_i()-1;
  10   char const *s = dim.ch_C ();
  11   while  (i > 0 && (isspace (s[i]) || isalpha (s[i])))
  12     {
  13       i--;
  14     }
  15   String unit (s + i+1);
  16   return convert_dimen (dim.value_f(), unit);
  17 }
  18
  19
  20 Real
  21 convert_dimen (Real quant, String unit)
  22 {
  23   if (unit == "cm")
  24     return quant * CM_TO_PT;
  25   if (unit == "pt")
  26     return quant;
  27   if (unit == "mm")
  28     return quant*CM_TO_PT/10;
  29   if (unit == "in")
  30     return quant * INCH_TO_PT;
  31   error (_f ("unknown length unit: `%s\'", unit));
  32 }
  33
  34 String
  35 print_dimen (Real r)
  36 {
  37   String s = to_str (r, "%.3f");
  38   if (s.index_i ("NaN") != -1)
  39     {
  40       warning (_ ("NaN"));
  41       s = "0.0";
  42     }
  43   s += "pt";
  44   return s;
  45 }
  46