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f497296c30
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17969 a592a061-630c-0410-9148-cb99ea01b6c8
98 lines
1.9 KiB
C++
98 lines
1.9 KiB
C++
/**
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* \file InsetMathBinom.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 "InsetMathBinom.h"
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#include "MathData.h"
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#include "MathSupport.h"
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#include "MathStream.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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InsetMathBinom::InsetMathBinom(bool choose)
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: choose_(choose)
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{}
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auto_ptr<InsetBase> InsetMathBinom::doClone() const
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{
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return auto_ptr<InsetBase>(new InsetMathBinom(*this));
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}
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int InsetMathBinom::dw() const
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{
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int w = dim_.height() / 5;
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if (w > 15)
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w = 15;
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if (w < 6)
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w = 6;
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return w;
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}
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bool InsetMathBinom::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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ScriptChanger dummy(mi.base);
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cell(0).metrics(mi);
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cell(1).metrics(mi);
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dim.asc = cell(0).height() + 4 + 5;
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dim.des = cell(1).height() + 4 - 5;
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dim.wid = max(cell(0).width(), cell(1).width()) + 2 * dw() + 4;
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metricsMarkers2(dim);
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bool const changed = dim_ != dim;
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dim_ = dim;
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return changed;
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}
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void InsetMathBinom::draw(PainterInfo & pi, int x, int y) const
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{
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int m = x + dim_.width() / 2;
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ScriptChanger dummy(pi.base);
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cell(0).draw(pi, m - cell(0).width() / 2, y - cell(0).descent() - 3 - 5);
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cell(1).draw(pi, m - cell(1).width() / 2, y + cell(1).ascent() + 3 - 5);
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mathed_draw_deco(pi, x, y - dim_.ascent(), dw(), dim_.height(), from_ascii("("));
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mathed_draw_deco(pi, x + dim_.width() - dw(), y - dim_.ascent(),
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dw(), dim_.height(), from_ascii(")"));
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drawMarkers2(pi, x, y);
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}
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bool InsetMathBinom::extraBraces() const
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{
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return choose_;
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}
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void InsetMathBinom::write(WriteStream & os) const
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{
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if (choose_)
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os << '{' << cell(0) << " \\choose " << cell(1) << '}';
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else
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os << "\\binom{" << cell(0) << "}{" << cell(1) << '}';
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}
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void InsetMathBinom::normalize(NormalStream & os) const
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{
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os << "[binom " << cell(0) << ' ' << cell(1) << ']';
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}
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} // namespace lyx
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