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75 lines
1.4 KiB
C++
75 lines
1.4 KiB
C++
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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "math_binominset.h"
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#include "math_parser.h"
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#include "support.h"
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#include "support/LOstream.h"
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MathBinomInset::MathBinomInset()
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{}
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MathInset * MathBinomInset::clone() const
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{
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return new MathBinomInset(*this);
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}
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int MathBinomInset::dw() const
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{
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int w = 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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void MathBinomInset::metrics(MathStyles st) const
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{
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size_ = smallerStyleFrac(st);
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xcell(0).metrics(size_);
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xcell(1).metrics(size_);
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ascent_ = xcell(0).height() + 4 + 5;
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descent_ = xcell(1).height() + 4 - 5;
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width_ = std::max(xcell(0).width(), xcell(1).width()) + 2 * dw() + 4;
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}
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void MathBinomInset::draw(Painter & pain, int x, int y) const
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{
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xo(x);
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yo(y);
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int m = x + width() / 2;
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xcell(0).draw(pain, m - xcell(0).width() / 2, y - xcell(0).descent() - 3 - 5);
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xcell(1).draw(pain, m - xcell(1).width() / 2, y + xcell(1).ascent() + 3 - 5);
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mathed_draw_deco(pain, x, y - ascent_,
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dw(), height(), in_word_set("("));
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mathed_draw_deco(pain, x + width() - dw(), y - ascent_,
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dw(), height(), in_word_set(")"));
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}
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void MathBinomInset::write(std::ostream & os, bool fragile) const
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{
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os << '{';
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cell(0).write(os, fragile);
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os << " \\choose ";
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cell(1).write(os, fragile);
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os << '}';
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}
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void MathBinomInset::writeNormal(std::ostream & os) const
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{
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os << "[binom ";
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cell(0).writeNormal(os);
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os << " ";
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cell(1).writeNormal(os);
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os << "] ";
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}
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