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e2bc7ffae3
RefChanger temporarily assigns a value to a non-const reference of any
kind. RefChanger provides a flexible and uniform generalisation of the various
scope guards previously derived from the old Changer class in MetricsInfo.h.
As before, a temporary assignment lasts as long as the Changer object lives. But
the new Changer is movable. In particular, contorsions are no longer needed to
change a private field. Special code can be moved into the appropriate classes,
and it is no longer necessary to create a new class for each specific use.
Syntax change:
FontSetChanger dummy(mi.base, value);
-> Changer dummy = mi.base.changeFontSet(value);
New function for generating arbitrary Changers:
Changer dummy = make_change(ref, val, condition);
Bugfix:
* Fix the display of \displaystyle{\substack{\frac{xyz}{}}} (missing style
change).
160 lines
3.3 KiB
C++
160 lines
3.3 KiB
C++
/**
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* \file InsetMathArray.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 "InsetMathArray.h"
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#include "LaTeXFeatures.h"
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#include "MathData.h"
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#include "MathParser.h"
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#include "MathStream.h"
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#include "MetricsInfo.h"
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#include "support/lstrings.h"
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#include <iterator>
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#include <sstream>
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using namespace std;
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namespace lyx {
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InsetMathArray::InsetMathArray(Buffer * buf, docstring const & name, int m,
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int n)
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: InsetMathGrid(buf, m, n), name_(name)
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{}
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InsetMathArray::InsetMathArray(Buffer * buf, docstring const & name, int m,
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int n, char valign, docstring const & halign)
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: InsetMathGrid(buf, m, n, valign, halign), name_(name)
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{}
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InsetMathArray::InsetMathArray(Buffer * buf, docstring const & name,
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docstring const & str)
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: InsetMathGrid(buf, 1, 1), name_(name)
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{
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vector< vector<string> > dat;
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istringstream is(to_utf8(str));
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string line;
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while (getline(is, line)) {
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istringstream ls(line);
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typedef istream_iterator<string> iter;
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vector<string> v = vector<string>(iter(ls), iter());
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if (!v.empty())
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dat.push_back(v);
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}
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for (row_type row = 1; row < dat.size(); ++row)
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addRow(0);
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for (col_type col = 1; col < dat[0].size(); ++col)
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addCol(0);
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for (row_type row = 0; row < dat.size(); ++row)
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for (col_type col = 0; col < dat[0].size(); ++col)
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mathed_parse_cell(cell(index(row, col)),
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from_utf8(dat[row][col]), Parse::NORMAL);
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}
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Inset * InsetMathArray::clone() const
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{
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return new InsetMathArray(*this);
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}
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void InsetMathArray::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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Changer dummy =
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mi.base.changeStyle(LM_ST_TEXT, mi.base.style == LM_ST_DISPLAY);
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InsetMathGrid::metrics(mi, dim);
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dim.wid += 6;
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}
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Dimension const InsetMathArray::dimension(BufferView const & bv) const
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{
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Dimension dim = InsetMathGrid::dimension(bv);
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dim.wid += 6;
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return dim;
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}
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void InsetMathArray::draw(PainterInfo & pi, int x, int y) const
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{
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setPosCache(pi, x, y);
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Changer dummy =
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pi.base.changeStyle(LM_ST_TEXT, pi.base.style == LM_ST_DISPLAY);
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InsetMathGrid::drawWithMargin(pi, x, y, 4, 2);
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}
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void InsetMathArray::write(WriteStream & os) const
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{
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MathEnsurer ensurer(os);
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if (os.fragile())
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os << "\\protect";
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os << "\\begin{" << name_ << '}';
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bool open = os.startOuterRow();
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char const v = verticalAlignment();
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if (v == 't' || v == 'b')
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os << '[' << v << ']';
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os << '{' << horizontalAlignments() << "}\n";
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InsetMathGrid::write(os);
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if (os.fragile())
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os << "\\protect";
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os << "\\end{" << name_ << '}';
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if (open)
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os.startOuterRow();
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// adding a \n here is bad if the array is the last item
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// in an \eqnarray...
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}
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void InsetMathArray::infoize(odocstream & os) const
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{
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docstring name = name_;
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name[0] = support::uppercase(name[0]);
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os << name << ' ';
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}
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void InsetMathArray::normalize(NormalStream & os) const
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{
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os << '[' << name_ << ' ';
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InsetMathGrid::normalize(os);
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os << ']';
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}
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void InsetMathArray::maple(MapleStream & os) const
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{
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os << "array(";
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InsetMathGrid::maple(os);
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os << ')';
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}
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void InsetMathArray::validate(LaTeXFeatures & features) const
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{
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if (name_ == "subarray")
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features.require("amsmath");
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InsetMathGrid::validate(features);
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}
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} // namespace lyx
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