#include "Length.h"
#include "LyXRC.h"
+#include "MetricsInfo.h"
+
+#include "frontends/FontMetrics.h"
#include "support/docstream.h"
+#include "support/lstrings.h"
#include <sstream>
#include <iomanip>
using namespace std;
+using namespace lyx::support;
namespace lyx {
}
-void Length::swap(Length & rhs)
-{
- std::swap(val_, rhs.val_);
- std::swap(unit_, rhs.unit_);
-}
-
-
string const Length::asString() const
{
ostringstream os;
- os << val_ << unit_name[unit_]; // setw?
+ if (unit_ != UNIT_NONE)
+ os << formatFPNumber(val_) << unit_name[unit_]; // setw?
return os.str();
}
docstring const Length::asDocstring() const
{
odocstringstream os;
- os << val_ << unit_name[unit_]; // setw?
+ if (unit_ != UNIT_NONE)
+ os << from_ascii(formatFPNumber(val_))
+ << from_ascii(unit_name[unit_]); // setw?
return os.str();
}
string const Length::asLatexString() const
{
ostringstream os;
+ // Do not allow scientific notation (e.g. 1.2e+03), since this is not valid
+ // LaTeX (bug 9416)
switch (unit_) {
case PTW:
- os << val_ / 100.0 << "\\textwidth";
+ os << formatFPNumber(val_ / 100.0) << "\\textwidth";
break;
case PCW:
- os << val_ / 100.0 << "\\columnwidth";
+ os << formatFPNumber(val_ / 100.0) << "\\columnwidth";
break;
case PPW:
- os << val_ / 100.0 << "\\paperwidth";
+ os << formatFPNumber(val_ / 100.0) << "\\paperwidth";
break;
case PLW:
- os << val_ / 100.0 << "\\linewidth";
+ os << formatFPNumber(val_ / 100.0) << "\\linewidth";
break;
case PTH:
- os << val_ / 100.0 << "\\textheight";
+ os << formatFPNumber(val_ / 100.0) << "\\textheight";
break;
case PPH:
- os << val_ / 100.0 << "\\paperheight";
+ os << formatFPNumber(val_ / 100.0) << "\\paperheight";
+ break;
+ case UNIT_NONE:
break;
default:
- os << val_ << unit_name[unit_];
+ os << formatFPNumber(val_) << unit_name[unit_];
break;
}
return os.str();
case BP:
case DD:
// close enough
- os << val_ << "pt";
+ os << formatFPNumber(val_) << "pt";
break;
case MM:
case CM:
case IN:
case EX:
case EM:
- os << val_ << unit_name[unit_];
+ os << formatFPNumber(val_) << unit_name[unit_];
break;
case CC:
- os << val_/12.0 << "pt";
+ os << formatFPNumber(val_ / 12.0) << "pt";
break;
case MU:
- os << val_/18.0 << "em";
+ os << formatFPNumber(val_ / 18.0) << "em";
break;
case PTW:
case PPW:
case PPH:
// what it's a percentage of probably won't make sense for HTML,
// so we'll assume people have chosen these appropriately
- os << val_ << '%';
+ os << formatFPNumber(val_) << '%';
break;
case SP:
case UNIT_NONE:
// DPI setting for monitor: pixels/inch
double const dpi = lyxrc.dpi; // screen resolution [pixels/inch]
- double const em_width = (em_width_base > 0)
- ? em_width_base
- : 10*(dpi/72.27)*zoom;
+ double const em_width_in = (em_width_base > 0)
+ ? em_width_base / (zoom * dpi)
+ : 10.0/72.27;
// A different estimate for em_width is
- // theFontMetrics(FontInfo(sane_font)).width('M')
+ // theFontMetrics(FontInfo(sane_font)).em()
// but this estimate might not be more accurate as the screen font
// is different then the latex font.
// between lengths and font sizes on the screen
// is the same as on paper.
+ double const text_width_in = text_width / (zoom * dpi);
+ double const result = zoom * dpi * inInch(text_width_in, em_width_in);
+ return static_cast<int>(result + ((result >= 0) ? 0.5 : -0.5));
+}
+
+
+double Length::inInch(double text_width, double em_width) const
+{
double result = 0.0;
switch (unit_) {
case Length::SP:
// Scaled point: sp = 1/65536 pt
- result = zoom * dpi * val_
- / (72.27 * 65536); // 4736286.7
+ result = val_ / (72.27 * 65536); // 4736286.7
break;
case Length::PT:
// Point: 1 pt = 1/72.27 inch
- result = zoom * dpi * val_
- / 72.27; // 72.27
+ result = val_ / 72.27; // 72.27
break;
case Length::BP:
// Big point: 1 bp = 1/72 inch
- result = zoom * dpi * val_
- / 72; // 72
+ result = val_ / 72; // 72
break;
case Length::DD:
// Didot: 1157dd = 1238 pt?
- result = zoom * dpi * val_
- / (72.27 / (0.376 * 2.845)); // 67.559735
+ result = val_ / (72.27 / (0.376 * 2.845)); // 67.559735
break;
case Length::MM:
// Millimeter: 1 mm = 1/25.4 inch
- result = zoom * dpi * val_
- / 25.4; // 25.4
+ result = val_ / 25.4; // 25.4
break;
case Length::PC:
// Pica: 1 pc = 12 pt
- result = zoom * dpi * val_
- / (72.27 / 12); // 6.0225
+ result = val_ / (72.27 / 12); // 6.0225
break;
case Length::CC:
// Cicero: 1 cc = 12 dd
- result = zoom * dpi * val_
+ result = val_
/ (72.27 / (12 * 0.376 * 2.845)); // 5.6299779
break;
case Length::CM:
// Centimeter: 1 cm = 1/2.54 inch
- result = zoom * dpi * val_
- / 2.54; // 2.54
+ result = val_ / 2.54; // 2.54
break;
case Length::IN:
// Inch
- result = zoom * dpi * val_;
+ result = val_;
break;
case Length::EX:
// Ex: The height of an "x"
result = 0; // this cannot happen
break;
}
- return static_cast<int>(result + ((result >= 0) ? 0.5 : -0.5));
+ return result;
+}
+
+
+int Length::inPixels(MetricsBase const & base) const
+{
+ return inPixels(base.textwidth, theFontMetrics(base.font).em());
}
{
// return any Length value as a one with
// the PostScript point, called bp (big points)
- double result = 0.0;
- switch (unit_) {
- case Length::CM:
- // 1bp = 0.2835cm
- result = val_ * 28.346;
- break;
- case Length::MM:
- // 1bp = 0.02835mm
- result = val_ * 2.8346;
- break;
- case Length::IN:
- // 1pt = 1/72in
- result = val_ * 72.0;
- break;
- default:
- // no other than bp possible
- result = val_;
- break;
- }
+
+ double const text_width_in = 210.0 / 2.54; // assume A4
+ double const em_width_in = 10.0 / 72.27;
+ double result = 72.0 * inInch(text_width_in, em_width_in);
return static_cast<int>(result + 0.5);
}
Length::UNIT Length::defaultUnit()
{
- // FIXME: use a preference
- return Length::CM;
+ return lyxrc.default_length_unit;
}
string const GlueLength::asString() const
{
+ if (len_.empty())
+ return string();
+
ostringstream buffer;
- buffer << len_.value();
+ buffer << formatFPNumber(len_.value());
if (plus_.zero() && minus_.zero()) {
buffer << unit_name[len_.unit()];
if (minus_.zero()) {
if (len_.unit() != plus_.unit())
buffer << unit_name[len_.unit()];
- buffer << '+' << plus_.value();
+ buffer << '+' << formatFPNumber(plus_.value());
buffer << unit_name[plus_.unit()];
return buffer.str();
}
if (plus_.zero()) {
if (len_.unit() != minus_.unit())
buffer << unit_name[len_.unit()];
- buffer << '-' << minus_.value();
+ buffer << '-' << formatFPNumber(minus_.value());
buffer << unit_name[minus_.unit()];
return buffer.str();
}
if (minus_ == plus_) {
if (len_.unit() != minus_.unit())
buffer << unit_name[len_.unit()];
- buffer << "+-" << minus_.value();
+ buffer << "+-" << formatFPNumber(minus_.value());
buffer << unit_name[minus_.unit()];
return buffer.str();
}
// this is so rare a case, why bother minimising units ?
buffer << unit_name[len_.unit()];
- buffer << '+' << plus_.value() << unit_name[plus_.unit()];
- buffer << '-' << minus_.value() << unit_name[minus_.unit()];
+ buffer << '+' << formatFPNumber(plus_.value()) << unit_name[plus_.unit()];
+ buffer << '-' << formatFPNumber(minus_.value()) << unit_name[minus_.unit()];
return buffer.str();
}