lyx_mirror/src/mathed/math_atom.h

63 lines
1.4 KiB
C
Raw Normal View History

// -*- 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 operator=(MathInset * p);
/// change inset under the hood
void reset(MathInset * p);
/// access to the inset (checked with gprof)
MathInset * nucleus() const { return nucleus_; }
/// access to the inset
MathInset * operator->() const { return nucleus_; }
private:
///
MathInset * nucleus_;
};
#endif