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Diffstat (limited to 'libs/pbd/pbd/undo.h')
| -rw-r--r-- | libs/pbd/pbd/undo.h | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/libs/pbd/pbd/undo.h b/libs/pbd/pbd/undo.h index fa53648b24..c5f60c51af 100644 --- a/libs/pbd/pbd/undo.h +++ b/libs/pbd/pbd/undo.h @@ -93,17 +93,24 @@ class UndoHistory : public sigc::trackable void clear_undo (); void clear_redo (); + /* returns all or part of the history. + If depth==0 it returns just the top + node. If depth<0, it returns everything. + If depth>0, it returns state for that + many elements of the history, or + the full history, whichever is smaller. + */ + XMLNode &get_state(int32_t depth = 0); void save_state(); - void set_depth (int32_t); - int32_t get_depth() const { return _depth; } + void set_depth (uint32_t); sigc::signal<void> Changed; private: bool _clearing; - int32_t _depth; + uint32_t _depth; std::list<UndoTransaction*> UndoList; std::list<UndoTransaction*> RedoList; |