source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
*/
#ifndef LINE_SPACER_HH
#define LINE_SPACER_HH
#include "lily-proto.hh"
-#include "varray.hh"
+#include "array.hh"
#include "vector.hh"
#include "interval.hh"
{
public:
- Paper_def * paper_l_;
- Paper_def *paper_l()const;
- Line_spacer();
-
- virtual Array<PCol*> error_pcol_l_arr() const=0;
-
- /** solve the spacing problem
-
- @return the column positions, and the energy (last element)
-
- */
- virtual Array<Real> solve() const=0;
-
- /** add a col to the problem. columns have to be added left to
- right. The column contains info on it's minimum width. */
- virtual void add_column(PCol *, bool fixed=false, Real fixpos=0.0)=0;
-
- /**
- can the posed problem be solved?
-
- @pre
-
- prepare() was called
-
- */
- virtual bool check_constraints(Vector v) const=0;
+ Real indent_f_;
+ Real line_len_f_;
+ Real default_space_f_;
- /**
- generate a solution which can't fail
- */
- virtual Vector default_solution() const=0;
+ Line_spacer();
- virtual void OK() const{}
- virtual void print() const{}
+ /** solve the spacing problem
+ */
+ virtual void solve (Column_x_positions *) const=0;
+
+ /**
+ Approximate the spacing problem:
+ return a lower bound on the energy
+ */
+ virtual void lower_bound_solution (Column_x_positions *) const=0;
+
+
+ /**
+ Define the problem. LINELEN < 0 signifies natural width spacing.
+ */
+
+ virtual void add_columns (Link_array<Paper_column>)=0;
+ virtual void OK() const{}
+ virtual void print() const{}
- /**
- Call after construction before solving
- */
- virtual void prepare(){}
+ /**
+ Call after construction before solving
+ */
+ virtual void prepare(){}
+ virtual ~Line_spacer ();
};
#endif