X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2Fmath_atom.h;h=9e02b7a8d30883d17d865cb1a9154433a66681a6;hb=cd03e2b7db8379a91f3d31eac2c5bc25b159c541;hp=a97ad307bb15fbe93d807769424d06ee5d0a50ec;hpb=4253792bd609d0ff130766693e292507dafcf631;p=lyx.git

diff --git a/src/mathed/math_atom.h b/src/mathed/math_atom.h
index a97ad307bb..9e02b7a8d3 100644
--- a/src/mathed/math_atom.h
+++ b/src/mathed/math_atom.h
@@ -1,166 +1,72 @@
 // -*- C++ -*-
+/**
+ * \file math_atom.h
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author André Pönitz
+ *
+ * Full author contact details are available in file CREDITS.
+ */
 
 #ifndef MATH_ATOM_H
 #define MATH_ATOM_H
 
-#include <config.h>
-#include <iosfwd>
 
-#ifdef __GNUG__
-#pragma interface
-#endif
+/**
+Wrapper for MathInset * with copy-semantics
 
-#include "math_defs.h"
+--
 
-/** 
 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.  
+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 LaTeXFeatures;
-class MathCharInset;
-class MathScriptInset;
+class InsetBase;
 class MathInset;
-class MathMacro;
-class MathArray;
-class Painter;
 
 class MathAtom {
-public: 
-	///
+public:
+	/// default constructor, object is useless, but we need it to put it into
+	// std::containers
 	MathAtom();
-	///
+	/// the "real constructor"
+	explicit MathAtom(InsetBase * p);
+	/// copy constructor, invokes nucleus_->clone()
 	MathAtom(MathAtom const &);
-	///
-	explicit MathAtom(MathInset * p);
-	///
-	MathAtom(MathInset * p, MathScriptInset * up, MathScriptInset * down);
-	/// 
-	virtual ~MathAtom(); 
-	///
+	/// we really need to clean up
+	~MathAtom();
+	/// assignment invokes nucleus_->clone()
 	void operator=(MathAtom const &);
-	///
-	void swap(MathAtom &);
-
-	/// draw the object, sets xo_ and yo_ cached values 
-	virtual void draw(Painter &, int x, int y) const;
-	/// reproduce itself
-	void metrics(MathStyles st) const;
-	/// 
-	int ascent() const;
-	///
-	int descent() const;
-	///
-	int width() const;
-	///
-	int height() const;
-
-	///
-	int xo() const;
-	///
-	int yo() const;
-	///
-	void xo(int tx) const;
-	///
-	void yo(int ty) const;
-	///
+	/// access to the inset (checked with gprof)
+	MathInset       * nucleus()       { return nucleus_; }
+	/// access to the inset
+	MathInset const * operator->() const { return nucleus_; }
 
-	///
-	void getXY(int & x, int & y) const;
-	///
-	bool covers(int x, int y) const;
+	/// width cache. Not nice...
+	mutable int width_;
 
-	///
-	void dump() const;
-	///
-	void validate(LaTeXFeatures & features) const;
-	///
-	void handleFont(MathTextCodes) {}
-
-	/// make sure superscript is available
-	MathScriptInset * ensure(bool up);
-	/// delete subscript array if empty
-	void removeEmptyScripts();
-	/// delete nucleus
-	void removeNucleus();
-	/// delete superscript
-	void removeUp();
-	/// delete subscript
-	void removeDown();
-	/// can we add a super- or subscript?
-	virtual bool allows(bool up) const { return script_[up] == 0; }
-	/// can we add a super- or subscript?
-	virtual bool allowsLimits() const { return true; }
-	/// set limits
-	void limits(int lim) { limits_ = lim; }
-	/// 
-	int limits() const { return limits_; }
-	///
-	bool hasLimits() const;
-	/// true if we have an "inner" position
-	bool hasInner() const;
-	/// returns superscript
-	MathScriptInset * up() const;
-	/// returns subscript
-	MathScriptInset * down() const;
-	/// returns superscript
-	MathScriptInset * & up();
-	/// returns subscript
-	MathScriptInset * & down();
-	///
-	MathInset * nucleus() const { return nucleus_; }
-	///
-	MathInset * & nucleus() { return nucleus_; }
-	///
-	void substitute(const MathMacro &);
-	///
-	void write(std::ostream &, bool) const;
-	///
-	void writeNormal(std::ostream &) const;
-	/// returns width of nucleus if any
-	int nwid() const;
-
-protected:
-	/// possible subscript (index 0) and superscript (index 1)
-	MathScriptInset * script_[2]; 
+private:
 	///
 	MathInset * nucleus_;
-	///
-	int limits_;
-
-private:
-	/// the following are used for positioning the cursor with the mouse
-	/// cached cursor start position in pixels from the document left
-	mutable int xo_;
-	/// cached cursor start position in pixels from the document top
-	mutable int yo_;
-
-	/// raw copy
-	void copy(MathAtom const & p);
-	/// raw destruction
-	void done();
-
-	/// returns y offset for superscript
-	int dy0() const;
-	/// returns y offset for subscript
-	int dy1() const;
-	/// returns x offset for main part
-	int dxx() const;
-	/// returns x offset for superscript
-	int dx0() const;
-	/// returns x offset for subscript
-	int dx1() const;
-	/// returns ascent of nucleus if any
-	int nasc() const;
-	/// returns descent of nucleus if any
-	int ndes() const;
 };
 
-std::ostream & operator<<(std::ostream &, MathAtom const &);
-
 #endif