src/Spacing.cpp

   1 /**
   2  * \file Spacing.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "Spacing.h"
  15 #include "support/lstrings.h"
  16 #include "support/convert.h"
  17
  18 #include <sstream>
  19 #include <string>
  20
  21
  22 namespace lyx {
  23
  24
  25 using std::ostream;
  26 using std::ostringstream;
  27 using std::string;
  28
  29
  30 string const Spacing::spacing_string[]
  31         = {"single", "onehalf", "double", "other"};
  32
  33
  34 string const Spacing::getValueAsString() const
  35 {
  36         switch (space) {
  37         case Default: // nothing special should happen with this...
  38         case Single: return "1.0";
  39         case Onehalf: return "1.25";
  40         case Double: return "1.667";
  41         case Other: return value;
  42         }
  43         return "1.0";
  44 }
  45
  46
  47 double Spacing::getValue() const
  48 {
  49         return convert<double>(getValueAsString());
  50 }
  51
  52
  53 void Spacing::set(Spacing::Space sp, double val)
  54 {
  55         set(sp, convert<string>(val));
  56 }
  57
  58
  59 void Spacing::set(Spacing::Space sp, string const & val)
  60 {
  61         space = sp;
  62         if (sp == Other) {
  63                 switch (int(convert<double>(val) * 1000 + 0.5)) {
  64                 case 1000:
  65                         space = Single;
  66                         break;
  67                 case 1250:
  68                         space = Onehalf;
  69                         break;
  70                 case 1667:
  71                         space = Double;
  72                         break;
  73                 default:
  74                         value = val;
  75                         break;
  76                 }
  77         }
  78 }
  79
  80
  81 void Spacing::writeFile(ostream & os, bool para) const
  82 {
  83         if (space == Default) return;
  84
  85         string cmd = para ? "\\paragraph_spacing " : "\\spacing ";
  86
  87         if (getSpace() == Spacing::Other) {
  88                 os << cmd << spacing_string[getSpace()]
  89                    << ' ' << getValueAsString() << "\n";
  90         } else {
  91                 os << cmd << spacing_string[getSpace()] << "\n";
  92         }
  93 }
  94
  95
  96 string const Spacing::writeEnvirBegin() const
  97 {
  98         switch (space) {
  99         case Default: break; // do nothing
 100         case Single:
 101                 return "\\begin{singlespace}";
 102         case Onehalf:
 103                 return "\\begin{onehalfspace}";
 104         case Double:
 105                 return "\\begin{doublespace}";
 106         case Other:
 107         {
 108                 ostringstream ost;
 109                 ost << "\\begin{spacing}{"
 110                     << getValueAsString() << '}';
 111                 return ost.str();
 112         }
 113         }
 114         return string();
 115 }
 116
 117
 118 string const Spacing::writeEnvirEnd() const
 119 {
 120         switch (space) {
 121         case Default: break; // do nothing
 122         case Single:
 123                 return "\\end{singlespace}";
 124         case Onehalf:
 125                 return "\\end{onehalfspace}";
 126         case Double:
 127                 return "\\end{doublespace}";
 128         case Other:
 129                 return "\\end{spacing}";
 130         }
 131         return string();
 132 }
 133
 134
 135 } // namespace lyx