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https://git.lyx.org/repos/lyx.git
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86c1053f51
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@17840 a592a061-630c-0410-9148-cb99ea01b6c8
486 lines
9.7 KiB
C
486 lines
9.7 KiB
C
/**
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* \file MathData.C
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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 "MathData.h"
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#include "InsetMathFont.h"
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#include "InsetMathScript.h"
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#include "InsetMathMacro.h"
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#include "MathMacroTable.h"
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#include "MathStream.h"
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#include "MathSupport.h"
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#include "MathReplace.h"
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#include "BufferView.h"
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#include "buffer.h"
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#include "cursor.h"
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#include "debug.h"
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#include "LColor.h"
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#include "frontends/FontMetrics.h"
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#include "frontends/Painter.h"
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#include <boost/assert.hpp>
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namespace lyx {
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using std::abs;
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using std::endl;
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using std::min;
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using std::ostringstream;
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using std::string;
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using std::vector;
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MathArray::MathArray(const_iterator from, const_iterator to)
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: base_type(from, to)
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{}
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MathAtom & MathArray::operator[](pos_type pos)
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{
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BOOST_ASSERT(pos < size());
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return base_type::operator[](pos);
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}
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MathAtom const & MathArray::operator[](pos_type pos) const
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{
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BOOST_ASSERT(pos < size());
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return base_type::operator[](pos);
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}
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void MathArray::insert(size_type pos, MathAtom const & t)
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{
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base_type::insert(begin() + pos, t);
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}
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void MathArray::insert(size_type pos, MathArray const & ar)
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{
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BOOST_ASSERT(pos <= size());
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base_type::insert(begin() + pos, ar.begin(), ar.end());
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}
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void MathArray::append(MathArray const & ar)
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{
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insert(size(), ar);
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}
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void MathArray::erase(size_type pos)
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{
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if (pos < size())
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erase(pos, pos + 1);
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}
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void MathArray::erase(iterator pos1, iterator pos2)
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{
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base_type::erase(pos1, pos2);
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}
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void MathArray::erase(iterator pos)
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{
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base_type::erase(pos);
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}
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void MathArray::erase(size_type pos1, size_type pos2)
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{
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base_type::erase(begin() + pos1, begin() + pos2);
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}
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void MathArray::dump2() const
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{
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odocstringstream os;
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NormalStream ns(os);
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for (const_iterator it = begin(); it != end(); ++it)
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ns << *it << ' ';
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lyxerr << to_utf8(os.str());
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}
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void MathArray::dump() const
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{
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odocstringstream os;
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NormalStream ns(os);
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for (const_iterator it = begin(); it != end(); ++it)
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ns << '<' << *it << '>';
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lyxerr << to_utf8(os.str());
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}
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void MathArray::validate(LaTeXFeatures & features) const
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{
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for (const_iterator it = begin(); it != end(); ++it)
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(*it)->validate(features);
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}
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bool MathArray::match(MathArray const & ar) const
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{
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return size() == ar.size() && matchpart(ar, 0);
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}
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bool MathArray::matchpart(MathArray const & ar, pos_type pos) const
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{
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if (size() < ar.size() + pos)
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return false;
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const_iterator it = begin() + pos;
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for (const_iterator jt = ar.begin(); jt != ar.end(); ++jt, ++it)
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if (asString(*it) != asString(*jt))
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return false;
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return true;
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}
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void MathArray::replace(ReplaceData & rep)
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{
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for (size_type i = 0; i < size(); ++i) {
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if (find1(rep.from, i)) {
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// match found
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lyxerr << "match found!" << endl;
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erase(i, i + rep.from.size());
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insert(i, rep.to);
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}
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}
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#ifdef WITH_WARNINGS
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#warning temporarily disabled
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// for (const_iterator it = begin(); it != end(); ++it)
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// it->nucleus()->replace(rep);
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#endif
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}
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bool MathArray::find1(MathArray const & ar, size_type pos) const
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{
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lyxerr << "finding '" << ar << "' in '" << *this << "'" << endl;
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for (size_type i = 0, n = ar.size(); i < n; ++i)
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if (asString(operator[](pos + i)) != asString(ar[i]))
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return false;
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return true;
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}
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MathArray::size_type MathArray::find(MathArray const & ar) const
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{
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for (int i = 0, last = size() - ar.size(); i < last; ++i)
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if (find1(ar, i))
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return i;
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return size();
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}
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MathArray::size_type MathArray::find_last(MathArray const & ar) const
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{
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for (int i = size() - ar.size(); i >= 0; --i)
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if (find1(ar, i))
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return i;
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return size();
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}
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bool MathArray::contains(MathArray const & ar) const
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{
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if (find(ar) != size())
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return true;
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for (const_iterator it = begin(); it != end(); ++it)
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if ((*it)->contains(ar))
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return true;
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return false;
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}
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void MathArray::touch() const
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{
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}
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bool MathArray::metrics(MetricsInfo & mi, Dimension & dim) const
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{
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dim = dim_;
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metrics(mi);
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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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namespace {
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bool isInside(DocIterator const & it, MathArray const & ar,
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pos_type p1, pos_type p2)
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{
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for (size_t i = 0; i != it.depth(); ++i) {
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CursorSlice const & sl = it[i];
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if (sl.inset().inMathed() && &sl.cell() == &ar)
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return p1 <= sl.pos() && sl.pos() < p2;
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}
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return false;
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}
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}
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void MathArray::metrics(MetricsInfo & mi) const
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{
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frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
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dim_ = fm.dimension('I');
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int xascent = fm.dimension('x').ascent();
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if (xascent >= dim_.asc)
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xascent = (2 * dim_.asc) / 3;
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minasc_ = xascent;
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mindes_ = (3 * xascent) / 4;
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slevel_ = (4 * xascent) / 5;
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sshift_ = xascent / 4;
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kerning_ = 0;
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if (empty())
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return;
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dim_.asc = 0;
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dim_.wid = 0;
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Dimension d;
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//BufferView & bv = *mi.base.bv;
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//Buffer const & buf = *bv.buffer();
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for (size_t i = 0, n = size(); i != n; ++i) {
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MathAtom const & at = operator[](i);
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#if 0
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MathMacro const * mac = at->asMacro();
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if (mac && buf.hasMacro(mac->name())) {
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MacroData const & tmpl = buf.getMacro(mac->name());
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int numargs = tmpl.numargs();
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if (i + numargs > n)
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numargs = n - i - 1;
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lyxerr << "metrics:found macro: " << mac->name()
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<< " numargs: " << numargs << endl;
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if (!isInside(bv.cursor(), *this, i + 1, i + numargs + 1)) {
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MathArray args(begin() + i + 1, begin() + i + numargs + 1);
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MathArray exp;
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tmpl.expand(args, exp);
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mac->setExpansion(exp, args);
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mac->metricsExpanded(mi, d);
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dim_.wid += mac->widthExpanded();
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i += numargs;
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continue;
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}
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}
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#endif
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at->metrics(mi, d);
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dim_ += d;
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if (i == n - 1)
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kerning_ = at->kerning();
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}
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}
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void MathArray::draw(PainterInfo & pi, int x, int y) const
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{
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//lyxerr << "MathArray::draw: x: " << x << " y: " << y << endl;
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BufferView & bv = *pi.base.bv;
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setXY(bv, x, y);
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if (empty()) {
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pi.pain.rectangle(x, y - ascent(), width(), height(), LColor::mathline);
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return;
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}
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// don't draw outside the workarea
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if (y + descent() <= 0
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|| y - ascent() >= bv.workHeight()
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|| x + width() <= 0
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|| x >= bv. workWidth())
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return;
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for (size_t i = 0, n = size(); i != n; ++i) {
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MathAtom const & at = operator[](i);
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#if 0
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Buffer const & buf = bv.buffer();
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// special macro handling
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MathMacro const * mac = at->asMacro();
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if (mac && buf.hasMacro(mac->name())) {
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MacroData const & tmpl = buf.getMacro(mac->name());
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int numargs = tmpl.numargs();
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if (i + numargs > n)
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numargs = n - i - 1;
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if (!isInside(bv.cursor(), *this, i + 1, i + numargs + 1)) {
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mac->drawExpanded(pi, x, y);
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x += mac->widthExpanded();
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i += numargs;
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continue;
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}
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}
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#endif
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bv.coordCache().insets().add(at.nucleus(), x, y);
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at->drawSelection(pi, x, y);
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at->draw(pi, x, y);
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x += at->width();
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}
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}
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void MathArray::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
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{
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dim.clear();
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Dimension d;
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for (const_iterator it = begin(); it != end(); ++it) {
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(*it)->metricsT(mi, d);
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dim += d;
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}
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}
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void MathArray::drawT(TextPainter & pain, int x, int y) const
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{
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//lyxerr << "x: " << x << " y: " << y << ' ' << pain.workAreaHeight() << endl;
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// FIXME: Abdel 16/10/2006
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// This drawT() method is never used, this is dead code.
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for (const_iterator it = begin(), et = end(); it != et; ++it) {
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(*it)->drawT(pain, x, y);
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//x += (*it)->width_;
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x += 2;
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}
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}
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int MathArray::pos2x(size_type pos) const
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{
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return pos2x(pos, 0);
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}
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int MathArray::pos2x(size_type pos, int glue) const
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{
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int x = 0;
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size_type target = min(pos, size());
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for (size_type i = 0; i < target; ++i) {
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const_iterator it = begin() + i;
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if ((*it)->getChar() == ' ')
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x += glue;
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//lyxerr << "char: " << (*it)->getChar()
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// << "width: " << (*it)->width() << std::endl;
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x += (*it)->width();
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}
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return x;
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}
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MathArray::size_type MathArray::x2pos(int targetx) const
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{
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return x2pos(targetx, 0);
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}
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MathArray::size_type MathArray::x2pos(int targetx, int glue) const
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{
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const_iterator it = begin();
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int lastx = 0;
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int currx = 0;
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// find first position after targetx
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for (; currx < targetx && it < end(); ++it) {
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lastx = currx;
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if ((*it)->getChar() == ' ')
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currx += glue;
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currx += (*it)->width();
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}
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/**
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* If we are not at the beginning of the array, go to the left
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* of the inset if one of the following two condition holds:
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* - the current inset is editable (so that the cursor tip is
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* deeper than us): in this case, we want all intermediate
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* cursor slices to be before insets;
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* - the mouse is closer to the left side of the inset than to
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* the right one.
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* See bug 1918 for details.
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**/
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if (it != begin() && currx >= targetx
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&& ((*boost::prior(it))->asNestInset()
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|| abs(lastx - targetx) < abs(currx - targetx))) {
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--it;
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}
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return it - begin();
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}
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int MathArray::dist(BufferView const & bv, int x, int y) const
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{
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int xx = 0;
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int yy = 0;
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const int xo_ = xo(bv);
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const int yo_ = yo(bv);
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if (x < xo_)
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xx = xo_ - x;
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else if (x > xo_ + width())
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xx = x - xo_ - width();
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if (y < yo_ - ascent())
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yy = yo_ - ascent() - y;
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else if (y > yo_ + descent())
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yy = y - yo_ - descent();
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return xx + yy;
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}
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void MathArray::setXY(BufferView & bv, int x, int y) const
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{
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//lyxerr << "setting position cache for MathArray " << this << std::endl;
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bv.coordCache().arrays().add(this, x, y);
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}
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int MathArray::xo(BufferView const & bv) const
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{
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return bv.coordCache().getArrays().x(this);
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}
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int MathArray::yo(BufferView const & bv) const
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{
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return bv.coordCache().getArrays().y(this);
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}
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std::ostream & operator<<(std::ostream & os, MathArray const & ar)
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{
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odocstringstream oss;
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NormalStream ns(oss);
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ns << ar;
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return os << to_utf8(oss.str());
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}
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odocstream & operator<<(odocstream & os, MathArray const & ar)
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{
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NormalStream ns(os);
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ns << ar;
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return os;
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}
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} // namespace lyx
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