lyx_mirror/src/mathed/math_sqrtinset.C

#ifdef __GNUG__
#pragma implementation
#endif

#include "math_sqrtinset.h"
#include "LColor.h"
#include "Painter.h"
#include "support/LOstream.h"


MathSqrtInset::MathSqrtInset()
	: MathNestInset(1)
{}


MathInset * MathSqrtInset::clone() const
{   
	return new MathSqrtInset(*this);
}


void MathSqrtInset::metrics(MathMetricsInfo const & mi) const
{
	xcell(0).metrics(mi);
	ascent_  = xcell(0).ascent()  + 4;
	descent_ = xcell(0).descent() + 2;
	width_   = xcell(0).width()   + 12;
}


void MathSqrtInset::draw(Painter & pain, int x, int y) const
{ 
	xcell(0).draw(pain, x + 10, y); 
	int const a = ascent_;
	int const d = descent_;
	int xp[4];
	int yp[4];
	xp[0] = x + width_; yp[0] = y - a + 1;
	xp[1] = x + 8;      yp[1] = y - a + 1;
	xp[2] = x + 5;      yp[2] = y + d - 1;
	xp[3] = x;          yp[3] = y + (d - a)/2;
	pain.lines(xp, yp, 4, LColor::mathline);
}


void MathSqrtInset::write(MathWriteInfo & os) const
{
	os << "\\sqrt{" << cell(0) << '}';
}


void MathSqrtInset::writeNormal(std::ostream & os) const
{
	os << "[sqrt ";
	cell(0).writeNormal(os); 
	os << "]";
}