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Diffstat (limited to 'lily/include/hara-kiri-group-spanner.hh')
| -rw-r--r-- | lily/include/hara-kiri-group-spanner.hh | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lily/include/hara-kiri-group-spanner.hh b/lily/include/hara-kiri-group-spanner.hh new file mode 100644 index 0000000000..476a18a915 --- /dev/null +++ b/lily/include/hara-kiri-group-spanner.hh @@ -0,0 +1,41 @@ +/* + hara-kiri-vertical-group-spanner.hh -- declare Har_kiri_vertical_group_spanner + + source file of the GNU LilyPond music typesetter + + (c) 1998--2000 Jan Nieuwenhuizen <janneke@gnu.org> +*/ + + +#ifndef HARA_KIRI_VERTICAL_GROUP_SPANNER_HH +#define HARA_KIRI_VERTICAL_GROUP_SPANNER_HH + +#include "spanner.hh" + +/** + As Vertical_group_spanner, but keep track of interesting items. If + we don't contain any interesting items after linebreaking, then + gracefully commit suicide. Objective: don't disgrace Lily by + typesetting empty lines in orchestral scores. + + properties: + + items-worth-living -- list of interesting items. If empty in a particular system, + clear this line + +*/ +class Hara_kiri_group_spanner : public Spanner +{ +public: + static Real force_hara_kiri_callback (Score_element const* , Axis); + Hara_kiri_group_spanner (SCM); + SCM member_after_line_breaking (); + static SCM after_line_breaking (SCM); + + void add_interesting_item (Item* n); + + VIRTUAL_COPY_CONS(Score_element); +}; + + +#endif // HARA_KIRI_VERTICAL_GROUP_SPANNER_HH |