lyx_mirror/src/mathed/math_fracinset.C
André Pönitz 1555e4c27c some support for \atop
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@2542 a592a061-630c-0410-9148-cb99ea01b6c8
2001-08-17 17:50:00 +00:00

74 lines
1.4 KiB
C

#ifdef __GNUG__
#pragma implementation
#endif
#include "math_fracinset.h"
#include "mathed/support.h"
#include "Painter.h"
#include "support/LOstream.h"
MathFracInset::MathFracInset(bool atop)
: atop_(atop)
{}
MathInset * MathFracInset::clone() const
{
return new MathFracInset(*this);
}
void MathFracInset::metrics(MathStyles st) const
{
size_ = smallerStyleFrac(st);
xcell(0).metrics(size_);
xcell(1).metrics(size_);
width_ = std::max(xcell(0).width(), xcell(1).width()) + 4;
ascent_ = xcell(0).height() + 4 + 5;
descent_ = xcell(1).height() + 4 - 5;
}
void MathFracInset::draw(Painter & pain, int x, int y) const
{
xo(x);
yo(y);
int m = x + width() / 2;
xcell(0).draw(pain, m - xcell(0).width() / 2, y - xcell(0).descent() - 3 - 5);
xcell(1).draw(pain, m - xcell(1).width() / 2, y + xcell(1).ascent() + 3 - 5);
if (!atop_)
pain.line(x + 2, y - 5, x + width() - 4, y - 5, LColor::mathline);
}
void MathFracInset::write(std::ostream & os, bool fragile) const
{
if (atop_) {
os << "{";
cell(0).write(os, fragile);
os << "\\atop ";
cell(1).write(os, fragile);
os << '}';
} else {
os << "\\frac{";
cell(0).write(os, fragile);
os << "}{";
cell(1).write(os, fragile);
os << '}';
}
}
void MathFracInset::writeNormal(std::ostream & os) const
{
if (atop_)
os << "[atop ";
else
os << "[frac ";
cell(0).writeNormal(os);
os << " ";
cell(1).writeNormal(os);
os << "] ";
}