#include "frontends/FontMetrics.h"
+#include "support/debug.h"
#include "support/docstream.h"
#include "support/lstrings.h"
+#include "support/lyxlib.h"
#include <sstream>
#include <iomanip>
Length::Length(string const & data)
- : val_(0), unit_(Length::PT)
+ : val_(0), unit_(Length::UNIT_NONE)
{
Length tmp;
{
odocstringstream os;
if (unit_ != UNIT_NONE)
- os << formatFPNumber(val_) << unit_name[unit_]; // setw?
+ os << from_ascii(formatFPNumber(val_))
+ << from_ascii(unit_name[unit_]); // setw?
return os.str();
}
case PPH:
os << formatFPNumber(val_ / 100.0) << "\\paperheight";
break;
+ case BLS:
+ os << formatFPNumber(val_ / 100.0) << "\\baselineskip";
+ break;
case UNIT_NONE:
break;
default:
case PCW:
case PTH:
case PPH:
+ case BLS:
// what it's a percentage of probably won't make sense for HTML,
// so we'll assume people have chosen these appropriately
os << formatFPNumber(val_) << '%';
int Length::inPixels(int text_width, int em_width_base) const
{
// Zoom factor specified by user in percent
- double const zoom = lyxrc.zoom / 100.0; // [percent]
+ double const zoom = lyxrc.currentZoom / 100.0; // [percent]
// 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)).em()
// but this estimate might not be more accurate as the screen 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 support::iround(result);
+}
+
+
+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"
case Length::PPH:
result = val_ * text_width * 2.2 / 100;
break;
+ case Length::BLS:
+ // baselineskip is approximately 1.2 times the font size for the cmr fonts
+ // The value actually depends on the current paragraph (see TextMetrics::setRowHeight),
+ // but we do not have this information here.
+ result = val_ * em_width * 1.2 / 100;
+ break;
case Length::UNIT_NONE:
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());
+ FontInfo fi = base.font;
+ if (unit_ == Length::MU)
+ // mu is 1/18th of an em in the math symbol font
+ fi.setFamily(SYMBOL_FAMILY);
+ else
+ // Math style is only taken into account in the case of mu
+ fi.setStyle(LM_ST_TEXT);
+ return inPixels(base.textwidth, theFontMetrics(fi).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;
- }
- return static_cast<int>(result + 0.5);
+
+ 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 support::iround(result);
}
GlueLength::GlueLength(string const & data)
{
- isValidGlueLength(data, this);
+ if (!isValidGlueLength(data, this))
+ LYXERR0("Invalid glue length " + data);
}
projects / lyx.git / blobdiff