lyx_mirror/src/mathed/math_decorationinset.C

/**
 * \file math_decorationinset.C
 * This file is part of LyX, the document processor.
 * Licence details can be found in the file COPYING.
 *
 * \author Alejandro Aguilar Sierra
 * \author Andr<EFBFBD> P<EFBFBD>nitz
 *
 * Full author contact details are available in file CREDITS.
 */

#include <config.h>

#include "math_decorationinset.h"
#include "math_support.h"
#include "math_parser.h"
#include "math_mathmlstream.h"
#include "math_streamstr.h"
#include "support/std_ostream.h"

using std::auto_ptr;


MathDecorationInset::MathDecorationInset(latexkeys const * key)
	: MathNestInset(1), key_(key)
{}


auto_ptr<InsetBase> MathDecorationInset::clone() const
{
	return auto_ptr<InsetBase>(new MathDecorationInset(*this));
}


bool MathDecorationInset::upper() const
{
	return key_->name.substr(0, 5) != "under";
}


bool MathDecorationInset::isScriptable() const
{
	return
			key_->name == "overbrace" ||
			key_->name == "underbrace" ||
			key_->name == "overleftarrow" ||
			key_->name == "overrightarrow" ||
			key_->name == "overleftrightarrow" ||
			key_->name == "underleftarrow" ||
			key_->name == "underrightarrow" ||
			key_->name == "underleftrightarrow";
}


bool MathDecorationInset::protect() const
{
	return
			key_->name == "overbrace" ||
			key_->name == "underbrace" ||
			key_->name == "overleftarrow" ||
			key_->name == "overrightarrow" ||
			key_->name == "overleftrightarrow" ||
			key_->name == "underleftarrow" ||
			key_->name == "underrightarrow" ||
			key_->name == "underleftrightarrow";
}


bool MathDecorationInset::wide() const
{
	return
			key_->name == "overline" ||
			key_->name == "underline" ||
			key_->name == "overbrace" ||
			key_->name == "underbrace" ||
			key_->name == "overleftarrow" ||
			key_->name == "overrightarrow" ||
			key_->name == "overleftrightarrow" ||
			key_->name == "widehat" ||
			key_->name == "widetilde" ||
			key_->name == "underleftarrow" ||
			key_->name == "underrightarrow" ||
			key_->name == "underleftrightarrow";
}


void MathDecorationInset::metrics(MetricsInfo & mi, Dimension & dim) const
{
	cell(0).metrics(mi);
	dim_ = cell(0).dim();

	dh_  = 6; //mathed_char_height(LM_TC_VAR, mi, 'I', ascent_, descent_);
	dw_  = 6; //mathed_char_width(LM_TC_VAR, mi, 'x');

	if (upper()) {
		dy_ = -dim_.asc - dh_;
		dim_.asc += dh_ + 1;
	} else {
		dy_ = dim_.des + 1;
		dim_.des += dh_ + 2;
	}

	metricsMarkers();
	dim = dim_;
}


void MathDecorationInset::draw(PainterInfo & pi, int x, int y) const
{
	cell(0).draw(pi, x + 1, y);
	if (wide())
		mathed_draw_deco(pi, x + 1, y + dy_, cell(0).width(), dh_, key_->name);
	else
		mathed_draw_deco(pi, x + 1 + (pi.width - dw_) / 2,
			y + dy_, dw_, dh_, key_->name);
	drawMarkers(pi, x, y);
}


void MathDecorationInset::write(WriteStream & os) const
{
	if (os.fragile() && protect())
		os << "\\protect";
	os << '\\' << key_->name << '{' << cell(0) << '}';
}


void MathDecorationInset::normalize(NormalStream & os) const
{
	os << "[deco " << key_->name << ' ' <<  cell(0) << ']';
}


void MathDecorationInset::infoize(std::ostream & os) const
{
	os << "Deco: " << key_->name;
}