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e224ef029b
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25287 a592a061-630c-0410-9148-cb99ea01b6c8
129 lines
2.8 KiB
C++
129 lines
2.8 KiB
C++
/**
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* \file InsetMathBig.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 "InsetMathBig.h"
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#include "MathSupport.h"
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#include "MathStream.h"
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#include "MetricsInfo.h"
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#include "frontends/FontMetrics.h"
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#include "support/docstream.h"
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#include "support/lstrings.h"
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namespace lyx {
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InsetMathBig::InsetMathBig(docstring const & name, docstring const & delim)
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: name_(name), delim_(delim)
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{}
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docstring InsetMathBig::name() const
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{
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return name_;
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}
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Inset * InsetMathBig::clone() const
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{
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return new InsetMathBig(*this);
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}
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InsetMathBig::size_type InsetMathBig::size() const
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{
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// order: big Big bigg Bigg biggg Biggg
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// 0 1 2 3 4 5
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return name_[0] == 'B' ?
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2 * (name_.size() - 4) + 1:
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2 * (name_.size() - 4);
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}
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double InsetMathBig::increase() const
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{
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// The formula used in amsmath.sty is
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// 1.2 * (1.0 + size() * 0.5) - 1.0.
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// We use a smaller step and a bigger offset because our base size
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// is different.
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return (size() + 1) * 0.3;
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}
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void InsetMathBig::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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double const h = theFontMetrics(mi.base.font).ascent('I');
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double const f = increase();
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dim.wid = 6;
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dim.asc = int(h + f * h);
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dim.des = int(f * h);
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}
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void InsetMathBig::draw(PainterInfo & pi, int x, int y) const
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{
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Dimension const dim = dimension(*pi.base.bv);
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// mathed_draw_deco does not use the leading backslash, so remove it
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// (but don't use ltrim if this is the backslash delimiter).
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// Replace \| by \Vert (equivalent in LaTeX), since mathed_draw_deco
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// would treat it as |.
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docstring const delim = (delim_ == "\\|") ? from_ascii("Vert") :
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(delim_ == "\\\\") ? from_ascii("\\") : support::ltrim(delim_, "\\");
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mathed_draw_deco(pi, x + 1, y - dim.ascent(), 4, dim.height(),
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delim);
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setPosCache(pi, x, y);
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}
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void InsetMathBig::write(WriteStream & os) const
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{
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MathEnsurer ensurer(os);
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os << '\\' << name_ << delim_;
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if (delim_[0] == '\\')
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os.pendingSpace(true);
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}
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void InsetMathBig::normalize(NormalStream & os) const
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{
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os << '[' << name_ << ' ' << delim_ << ']';
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}
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void InsetMathBig::infoize2(odocstream & os) const
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{
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os << name_;
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}
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bool InsetMathBig::isBigInsetDelim(docstring const & delim)
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{
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// mathed_draw_deco must handle these
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static char const * const delimiters[] = {
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"(", ")", "\\{", "\\}", "\\lbrace", "\\rbrace", "[", "]",
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"|", "/", "\\slash", "\\|", "\\vert", "\\Vert", "'",
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"\\\\", "\\backslash",
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"\\langle", "\\lceil", "\\lfloor",
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"\\rangle", "\\rceil", "\\rfloor",
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"\\downarrow", "\\Downarrow",
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"\\uparrow", "\\Uparrow",
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"\\updownarrow", "\\Updownarrow", ""
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};
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return support::findToken(delimiters, to_utf8(delim)) >= 0;
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}
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} // namespace lyx
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