lyx_mirror/src/mathed/InsetMathPhantom.cpp
Enrico Forestieri e224ef029b Implement the suggestion by Andre'
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25287 a592a061-630c-0410-9148-cb99ea01b6c8
2008-06-17 11:10:43 +00:00

172 lines
3.3 KiB
C++

/**
* \file InsetMathPhantom.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Georg Baum
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "InsetMathPhantom.h"
#include "MathStream.h"
#include "frontends/Painter.h"
#include <ostream>
namespace lyx {
InsetMathPhantom::InsetMathPhantom(Kind k)
: InsetMathNest(1), kind_(k)
{}
Inset * InsetMathPhantom::clone() const
{
return new InsetMathPhantom(*this);
}
void InsetMathPhantom::metrics(MetricsInfo & mi, Dimension & dim) const
{
cell(0).metrics(mi, dim);
metricsMarkers(dim);
}
void InsetMathPhantom::draw(PainterInfo & pi, int x, int y) const
{
static int const arrow_size = 4;
// We first draw the text and then an arrow
ColorCode const origcol = pi.base.font.color();
pi.base.font.setColor(Color_special);
cell(0).draw(pi, x + 1, y);
pi.base.font.setColor(origcol);
Dimension const dim = dimension(*pi.base.bv);
if (kind_ == phantom || kind_ == vphantom) {
// y1---------
// / \.
// y2----- / | \.
// |
// |
// y3----- \ | /
// \ /
// y4---------
// | | |
// / | \.
// x1 x2 x3
int const x2 = x + dim.wid / 2;
int const x1 = x2 - arrow_size;
int const x3 = x2 + arrow_size;
int const y1 = y - dim.asc;
int const y2 = y1 + arrow_size;
int const y4 = y + dim.des;
int const y3 = y4 - arrow_size;
// top arrow
pi.pain.line(x2, y1, x1, y2, Color_added_space);
pi.pain.line(x2, y1, x3, y2, Color_added_space);
// bottom arrow
pi.pain.line(x2, y4, x1, y3, Color_added_space);
pi.pain.line(x2, y4, x3, y3, Color_added_space);
// joining line
pi.pain.line(x2, y1, x2, y4, Color_added_space);
}
if (kind_ == phantom || kind_ == hphantom) {
// y1---- / \.
// / \.
// y2--- <---------------->
// \ /
// y3---- \ /
// | | | |
// x1 x2 x3 x4
int const x1 = x;
int const x2 = x + arrow_size;
int const x4 = x + dim.wid;
int const x3 = x4 - arrow_size;
int const y2 = y + (dim.des - dim.asc) / 2;
int const y1 = y2 - arrow_size;
int const y3 = y2 + arrow_size;
// left arrow
pi.pain.line(x1, y2, x2, y3, Color_added_space);
pi.pain.line(x1, y2, x2, y1, Color_added_space);
// right arrow
pi.pain.line(x4, y2, x3, y3, Color_added_space);
pi.pain.line(x4, y2, x3, y1, Color_added_space);
// joining line
pi.pain.line(x1, y2, x4, y2, Color_added_space);
}
drawMarkers(pi, x, y);
}
void InsetMathPhantom::write(WriteStream & os) const
{
MathEnsurer ensurer(os);
switch (kind_) {
case phantom:
os << "\\phantom{";
break;
case vphantom:
os << "\\vphantom{";
break;
case hphantom:
os << "\\hphantom{";
break;
}
os << cell(0) << '}';
}
void InsetMathPhantom::normalize(NormalStream & os) const
{
switch (kind_) {
case phantom:
os << "[phantom ";
break;
case vphantom:
os << "[vphantom ";
break;
case hphantom:
os << "[hphantom ";
break;
}
os << cell(0) << ']';
}
void InsetMathPhantom::infoize(odocstream & os) const
{
switch (kind_) {
case phantom:
os << "Phantom";
break;
case vphantom:
os << "Vphantom";
break;
case hphantom:
os << "Hphantom";
break;
}
}
} // namespace lyx