lyx_mirror/src/Spacing.cpp
2020-11-27 12:16:50 +02:00

170 lines
3.5 KiB
C++

/**
* \file Spacing.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Lars Gullik Bjønnes
* \author Jean-Marc Lasgouttes
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "Spacing.h"
#include "support/convert.h"
#include "support/lstrings.h"
#include "support/lyxlib.h"
#include <ostream>
using namespace std;
namespace lyx {
string const Spacing::spacing_string[]
= {"single", "onehalf", "double", "other"};
string const Spacing::getValueAsString() const
{
switch (space) {
case Default: // nothing special should happen with this...
case Single: return "1.0";
case Onehalf: return "1.25";
case Double: return "1.667";
case Other: return value;
}
return "1.0";
}
double Spacing::getValue() const
{
return convert<double>(getValueAsString());
}
void Spacing::set(Spacing::Space sp, double val)
{
set(sp, convert<string>(val));
}
void Spacing::set(Spacing::Space sp, string const & val)
{
space = sp;
if (sp == Other) {
switch (support::iround(convert<double>(val) * 1000)) {
case 1000:
space = Single;
break;
case 1250:
space = Onehalf;
break;
case 1667:
space = Double;
break;
default:
value = val;
break;
}
}
}
void Spacing::writeFile(ostream & os, bool para) const
{
if (space == Default) return;
string cmd = para ? "\\paragraph_spacing " : "\\spacing ";
if (getSpace() == Spacing::Other) {
os << cmd << spacing_string[getSpace()]
<< ' ' << getValueAsString() << "\n";
} else {
os << cmd << spacing_string[getSpace()] << "\n";
}
}
namespace {
string envName(Spacing::Space space, bool useSetSpace)
{
static char const * const env_names[]
= { "SingleSpace", "OnehalfSpace", "DoubleSpace", "Spacing", ""};
string const name = env_names[space];
return useSetSpace ? name : support::ascii_lowercase(name);
}
string cmdName(Spacing::Space space, bool useSetSpace)
{
static char const * const cmd_names[]
= { "SingleSpacing", "OnehalfSpacing", "DoubleSpacing", "SetStretch", ""};
string const name = cmd_names[space];
if (useSetSpace && name == "SetStretch")
return "setSpacing";
return useSetSpace ? name : support::ascii_lowercase(name);
}
} // namespace
string const Spacing::writeEnvirBegin(bool useSetSpace) const
{
string const name = envName(space, useSetSpace);
if (space == Other)
return "\\begin{" + name + "}{" + getValueAsString() + '}';
else
return name.empty() ? string() : "\\begin{" + name + '}';
}
string const Spacing::writeEnvirEnd(bool useSetSpace) const
{
string const name = envName(space, useSetSpace);
return name.empty() ? string() : "\\end{" + name + '}';
}
string const Spacing::writeCmd(bool useSetSpace) const
{
string const name = cmdName(space, useSetSpace);
if (space == Other)
return "\\" + name + "{" + getValueAsString() + '}';
else
return name.empty() ? string() : "\\" + name + "{}";
}
string const Spacing::writePreamble(bool useSetSpace) const
{
string preamble;
switch (space) {
case Default:
case Single:
// we dont use setspace.sty so dont print anything
//return "\\singlespacing\n";
break;
case Onehalf:
preamble = useSetSpace ? "\\OnehalfSpacing\n"
: "\\onehalfspacing\n";
break;
case Double:
preamble = useSetSpace ? "\\DoubleSpacing\n"
: "\\doublespacing\n";
break;
case Other:
preamble = (useSetSpace ? "\\setSpacing{" : "\\setstretch{")
+ getValueAsString() + "}\n";
break;
}
return preamble;
}
} // namespace lyx