/*
- spanner.hh -- part of LilyPond
+ spanner.hh -- part of GNU LilyPond
(c) 1996,97 Han-Wen Nienhuys
*/
#ifndef SPANNER_HH
#define SPANNER_HH
-#include "proto.hh"
-#include "staff-elem.hh"
+#include "lily-proto.hh"
+#include "score-elem.hh"
-/** a symbol which is attached between two columns. A spanner is a symbol which spans across several columns, so its
- final appearance can only be calculated after the breaking problem
- is solved.
+#define SPANNER_CLONE(T) VIRTUAL_COPY_CONS(T, Spanner)
+
+/** a symbol which is attached between two columns. A spanner is a
+ symbol which spans across several columns, so its final appearance
+ can only be calculated after the breaking problem is solved.
Examples
- - (de)crescendo
- - slur
- - beam
- - bracket
+ \begin{itemize}
+ \item (de)crescendo
+ \item slur
+ \item beam
+ \item bracket
+ \end{itemize}
Spanner should know about the items which it should consider:
- e.g. slurs should be steep enough to "enclose" all those items. This
- is absolutely necessary for beams, since they have to adjust the
- length of stems of notes they encompass.
-
- */
-struct Spanner:Staff_elem {
- PCol *left, *right;
-
+ e.g. slurs should be steep enough to "enclose" all those items. This
+ is absolutely necessary for beams, since they have to adjust the
+ length of stems of notes they encompass.
+
+ */
+class Spanner:public virtual Score_elem {
+public:
+ PCol *left_col_l_, *right_col_l_;
/* *************** */
-
+ NAME_MEMBERS(Spanner);
+ virtual Spanner* spanner() { return this; }
Spanner();
- virtual Interval width()const;
- void do_print()const;
-
- Spanner *broken_at(PCol *c1, PCol *c2) const;
- virtual Spanner* spanner() { return this; }
+ bool broken_b() const;
+ Spanner* find_broken_piece(Line_of_score*)const;
protected:
-
- /**
- clone a piece of this spanner.
- PRE
- c1 >= start, c2 <= stop
- */
- virtual Spanner *do_break_at( PCol *c1, PCol *c2) const=0;
- NAME_MEMBERS(Spanner);
+ SPANNER_CLONE(Spanner)
+ virtual void break_into_pieces();
+
+ Link_array<Spanner> broken_into_l_arr_;
+
+ virtual void do_break_processing();
+ virtual Interval do_width()const;
+ virtual void do_print()const;
+ virtual Line_of_score*line_l()const;
};
#endif