mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-12-04 22:32:19 +00:00
128 lines
2.7 KiB
C++
128 lines
2.7 KiB
C++
/**
|
|
* \file InsetMathCancelto.cpp
|
|
* This file is part of LyX, the document processor.
|
|
* Licence details can be found in the file COPYING.
|
|
*
|
|
* \author Uwe Stöhr
|
|
*
|
|
* Full author contact details are available in file CREDITS.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "InsetMathCancelto.h"
|
|
|
|
#include "MathData.h"
|
|
#include "MathStream.h"
|
|
|
|
#include "Cursor.h"
|
|
#include "LaTeXFeatures.h"
|
|
#include "MetricsInfo.h"
|
|
|
|
#include "frontends/Painter.h"
|
|
|
|
#include <ostream>
|
|
|
|
using namespace std;
|
|
|
|
namespace lyx {
|
|
|
|
|
|
InsetMathCancelto::InsetMathCancelto(Buffer * buf)
|
|
: InsetMathNest(buf, 2)
|
|
{}
|
|
|
|
|
|
Inset * InsetMathCancelto::clone() const
|
|
{
|
|
return new InsetMathCancelto(*this);
|
|
}
|
|
|
|
|
|
void InsetMathCancelto::metrics(MetricsInfo & mi, Dimension & dim) const
|
|
{
|
|
Changer dummy = mi.base.changeEnsureMath();
|
|
cellsMetrics(mi);
|
|
Dimension const & dim0 = cell(0).dimension(*mi.base.bv);
|
|
Dimension const & dim1 = cell(1).dimension(*mi.base.bv);
|
|
dim.asc = max(dim0.ascent() + 2, dim0.ascent() + dim1.ascent()) + 2 + 8;
|
|
dim.des = max(dim0.descent() - 2, dim1.descent()) + 2;
|
|
dim.wid = dim0.width() + dim1.width() + 10;
|
|
}
|
|
|
|
|
|
void InsetMathCancelto::draw(PainterInfo & pi, int x, int y) const
|
|
{
|
|
Changer dummy = pi.base.changeEnsureMath();
|
|
ColorCode const origcol = pi.base.font.color();
|
|
|
|
// We first draw the text and then an arrow
|
|
Dimension const & dim0 = cell(0).dimension(*pi.base.bv);
|
|
cell(0).draw(pi, x, y);
|
|
cell(1).draw(pi, x + dim0.wid + 1 + 8, y - dim0.asc - 8);
|
|
|
|
//Dimension const dim = dimension(*pi.base.bv);
|
|
|
|
// y3____ ___
|
|
// /|
|
|
// y2_ / |
|
|
// /
|
|
// /
|
|
// /
|
|
// /
|
|
// y1 / | |
|
|
// x1 x2 x3
|
|
|
|
int const x2 = x + dim0.wid;
|
|
int const x3 = x2 + 8;
|
|
int const x1 = x;
|
|
int const y1 = y + dim0.des;
|
|
int const y2 = y - dim0.asc;
|
|
int const y3 = y2 - 8;
|
|
|
|
// the main line
|
|
pi.pain.line(x3, y3, x1, y1, origcol);
|
|
// the arrow bars
|
|
pi.pain.line(x3, y3, x2 + 2, y3, origcol);
|
|
pi.pain.line(x3, y3, x3 - 2, y2 - 2, origcol);
|
|
}
|
|
|
|
|
|
void InsetMathCancelto::write(TeXMathStream & os) const
|
|
{
|
|
MathEnsurer ensurer(os);
|
|
os << "\\cancelto{" << cell(1) << "}{" << cell(0) << '}';
|
|
}
|
|
|
|
|
|
void InsetMathCancelto::normalize(NormalStream & os) const
|
|
{
|
|
os << "[cancelto " << cell(1) << ' ' << cell(0) << ']';
|
|
}
|
|
|
|
bool InsetMathCancelto::idxUpDown(Cursor & cur, bool up) const
|
|
{
|
|
idx_type const target = up ? 1 : 0;
|
|
if (cur.idx() == target)
|
|
return false;
|
|
cur.idx() = target;
|
|
cur.pos() = up ? cur.lastpos() : 0;
|
|
return true;
|
|
}
|
|
|
|
void InsetMathCancelto::infoize(odocstream & os) const
|
|
{
|
|
os << "Cancelto";
|
|
}
|
|
|
|
void InsetMathCancelto::validate(LaTeXFeatures & features) const
|
|
{
|
|
InsetMathNest::validate(features);
|
|
if (features.runparams().isLaTeX())
|
|
features.require("cancel");
|
|
InsetMathNest::validate(features);
|
|
}
|
|
|
|
|
|
} // namespace lyx
|