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32871c1284
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18089 a592a061-630c-0410-9148-cb99ea01b6c8
108 lines
2.1 KiB
C++
108 lines
2.1 KiB
C++
/**
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* \file InsetMathUnderset.cpp
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author André Pönitz
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "InsetMathUnderset.h"
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#include "MathData.h"
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#include "MathStream.h"
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#include "Cursor.h"
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#include "LaTeXFeatures.h"
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namespace lyx {
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using std::max;
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using std::auto_ptr;
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auto_ptr<Inset> InsetMathUnderset::doClone() const
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{
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return auto_ptr<Inset>(new InsetMathUnderset(*this));
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}
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bool InsetMathUnderset::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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cell(1).metrics(mi);
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FracChanger dummy(mi.base);
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cell(0).metrics(mi);
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dim.wid = max(cell(0).width(), cell(1).width()) + 4;
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dim.asc = cell(1).ascent();
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dim.des = cell(1).descent() + cell(0).height() + 4;
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metricsMarkers(dim);
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if (dim_ == dim)
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return false;
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dim_ = dim;
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return true;
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}
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void InsetMathUnderset::draw(PainterInfo & pi, int x, int y) const
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{
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int m = x + width() / 2;
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int yo = y + cell(1).descent() + cell(0).ascent() + 1;
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cell(1).draw(pi, m - cell(1).width() / 2, y);
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FracChanger dummy(pi.base);
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cell(0).draw(pi, m - cell(0).width() / 2, yo);
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drawMarkers(pi, x, y);
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}
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bool InsetMathUnderset::idxFirst(Cursor & cur) const
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{
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cur.idx() = 1;
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cur.pos() = 0;
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return true;
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}
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bool InsetMathUnderset::idxLast(Cursor & cur) const
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{
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cur.idx() = 1;
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cur.pos() = cur.lastpos();
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return true;
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}
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bool InsetMathUnderset::idxUpDown(Cursor & cur, bool up) const
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{
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idx_type target = up; // up ? 1 : 0, since upper cell has idx 1
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if (cur.idx() == target)
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return false;
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cur.idx() = target;
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cur.pos() = cur.cell().x2pos(cur.x_target());
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return true;
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}
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void InsetMathUnderset::write(WriteStream & os) const
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{
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os << "\\underset{" << cell(0) << "}{" << cell(1) << '}';
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}
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void InsetMathUnderset::normalize(NormalStream & os) const
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{
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os << "[underset " << cell(0) << ' ' << cell(1) << ']';
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}
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void InsetMathUnderset::validate(LaTeXFeatures & features) const
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{
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features.require("amsmath");
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InsetMathNest::validate(features);
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}
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} // namespace lyx
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