lyx_mirror/src/mathed/math_deliminset.C

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#include <config.h>
#ifdef __GNUG__
#pragma implementation
#endif
#include "math_deliminset.h"
#include "math_parser.h"
#include "mathed/support.h"
#include "support/LOstream.h"
using std::max;
MathDelimInset::MathDelimInset(string const & l, string const & r)
: MathNestInset(1), left_(l), right_(r)
{}
MathInset * MathDelimInset::clone() const
{
return new MathDelimInset(*this);
}
string MathDelimInset::latexName(string const & name)
{
if (name == "(")
return name;
if (name == "[")
return name;
if (name == ".")
return name;
if (name == ")")
return name;
if (name == "]")
return name;
if (name == "/")
return name;
if (name == "|")
return name;
return "\\" + name + " ";
}
void MathDelimInset::write(MathWriteInfo & os) const
{
os << "\\left" << latexName(left_) << cell(0)
<< "\\right" << latexName(right_);
}
void MathDelimInset::writeNormal(std::ostream & os) const
{
os << "[delim " << latexName(left_) << ' ' << latexName(right_) << ' ';
cell(0).writeNormal(os);
os << "]";
}
int MathDelimInset::dw() const
{
int w = height() / 5;
if (w > 15)
w = 15;
if (w < 4)
w = 4;
return w;
}
void MathDelimInset::metrics(MathMetricsInfo const & mi) const
{
xcell(0).metrics(mi);
int a, d, w;
mathed_char_dim(LM_TC_VAR, mi, 'I', a, d, w);
int h0 = (a + d) / 2;
int a0 = std::max(xcell(0).ascent(), a) - h0;
int d0 = std::max(xcell(0).descent(), d) + h0;
ascent_ = max(a0, d0) + h0;
descent_ = max(a0, d0) - h0;
width_ = xcell(0).width() + 2 * dw() + 4;
}
void MathDelimInset::draw(Painter & pain, int x, int y) const
{
int const w = dw();
int const b = y - ascent_;
xcell(0).draw(pain, x + w + 2, y);
mathed_draw_deco(pain, x + 1, b, w, height(), left_);
mathed_draw_deco(pain, x + width() - w - 1, b, w, height(), right_);
}