src/lyxlength.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "lyxlength.h"
  18
  19 #include "Lsstream.h"
  20
  21 namespace {
  22 // this is now here and in lyxgluelength.C
  23
  24 int const num_units = LyXLength::UNIT_NONE;
  25
  26 // I am not sure if "mu" should be possible to select (Lgb)
  27 char const * unit_name[num_units] = { "sp", "pt", "bp", "dd",
  28                                       "mm", "pc", "cc", "cm",
  29                                       "in", "ex", "em", "mu",
  30                                       "%",  "c%", "p%", "l%" };
  31
  32
  33 LyXLength::UNIT unitFromString(string const & data)
  34 {
  35         int i = 0;
  36         while (i < num_units && data != unit_name[i])
  37                 ++i;
  38         return static_cast<LyXLength::UNIT>(i);
  39 }
  40
  41 }
  42
  43
  44 LyXLength::LyXLength()
  45         : val_(0), unit_(LyXLength::PT)
  46 {}
  47
  48
  49 LyXLength::LyXLength(double v, LyXLength::UNIT u)
  50         : val_(v), unit_(u)
  51 {}
  52
  53
  54 LyXLength::LyXLength(string const & data)
  55 {
  56         LyXLength tmp;
  57
  58         if (!isValidLength (data, &tmp))
  59                 return; // should raise an exception
  60
  61         val_  = tmp.val_;
  62         unit_ = tmp.unit_;
  63 }
  64
  65
  66 string const LyXLength::asString() const
  67 {
  68         ostringstream buffer;
  69         buffer << val_ << unit_name[unit_]; // setw?
  70         return buffer.str().c_str();
  71 }
  72
  73
  74 string const LyXLength::asLatexString() const
  75 {
  76         ostringstream buffer;
  77         switch(unit_) {
  78         case PW:
  79         case PE:
  80             buffer << abs(static_cast<int>(val_/100)) << "."
  81                                 << abs(static_cast<int>(val_)%100) << "\\columnwidth";
  82             break;
  83         case PP:
  84             buffer << abs(static_cast<int>(val_/100)) << "."
  85                                 << abs(static_cast<int>(val_)%100) << "\\pagewidth";
  86             break;
  87         case PL:
  88             buffer << abs(static_cast<int>(val_/100)) << "."
  89                                 << abs(static_cast<int>(val_)%100) << "\\linewidth";
  90             break;
  91         default:
  92             buffer << val_ << unit_name[unit_]; // setw?
  93             break;
  94         }
  95         return buffer.str().c_str();
  96 }
  97
  98
  99 double LyXLength::value() const
 100 {
 101         return val_;
 102 }
 103
 104
 105 LyXLength::UNIT LyXLength::unit() const
 106 {
 107         return unit_;
 108 }
 109
 110
 111 void LyXLength::value(double v)
 112 {
 113         val_ = v;
 114 }
 115
 116
 117 void LyXLength::unit(LyXLength::UNIT u)
 118 {
 119         unit_ = u;
 120 }
 121
 122
 123 bool operator==(LyXLength const & l1, LyXLength const & l2)
 124 {
 125         return l1.value() == l2.value() && l1.unit() == l2.unit();
 126 }