lyx_mirror/src/mathed/math_atom.h
André Pönitz c9541eeeab Essentially Lars' "thread safe" patch
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@3183 a592a061-630c-0410-9148-cb99ea01b6c8
2001-12-11 07:38:02 +00:00

61 lines
1.3 KiB
C++

// -*- C++ -*-
#ifndef MATH_ATOM_H
#define MATH_ATOM_H
#ifdef __GNUG__
#pragma interface
#endif
/**
The 'atom' is the major blob in math typesetting. And 'atom' consists
of a nucleus, an optional superscript, and an optional subscript.
Exactly where the subscript and superscript are drawn depends on the
size, and type, of the nucleus they are attached to.
Jules
--
Ok: Implementing it thusly is not feasible since cursor movement gets
hackish. We use MathAtom only as a wrapper around MathInset * with value
semantics.
The MathAtom owns the MathInset * and is responsible for proper cloning and
destruction. Every MathInset * should be put into a MathAtom after its
creation as soon as possible.
Andre'
*/
class MathInset;
class MathAtom {
public:
/// default constructor, object is useless, but we need it to put it into
// std::containers
MathAtom();
/// the "real constructor"
explicit MathAtom(MathInset * p);
/// copy constructor, invokes nucleus_->clone()
MathAtom(MathAtom const &);
/// we really need to clean up
~MathAtom();
/// assignment invokes nucleus_->clone()
void operator=(MathAtom const &);
/// change inset under the hood
void reset(MathInset * p);
/// access to the inset
MathInset * nucleus() const;
/// access to the inset
MathInset * operator->() const;
private:
///
MathInset * nucleus_;
};
#endif