decouple midi region note range and height from midi streamview.

[ardour.git] / libs / canvas / canvas / lookup_table.h

diff --git a/libs/canvas/canvas/lookup_table.h b/libs/canvas/canvas/lookup_table.h
index 4ab69b6167f212e60c391861048023625d656939..2877f7a727b194121231a5d075a5bb55bf74bc35 100644 (file)
--- a/libs/canvas/canvas/lookup_table.h
+++ b/libs/canvas/canvas/lookup_table.h
@@ -22,6 +22,8 @@
 
 #include <vector>
 #include <boost/multi_array.hpp>
+
+#include "canvas/visibility.h"
 #include "canvas/types.h"
 
 class OptimizingLookupTableTest;
@@ -29,55 +31,57 @@ class OptimizingLookupTableTest;
 namespace ArdourCanvas {
 
 class Item;
-class Group;
 
-class LookupTable
+class LIBCANVAS_API LookupTable
 {
 public:
-       LookupTable (Group const &);
-       virtual ~LookupTable ();
+    LookupTable (Item const &);
+    virtual ~LookupTable ();
 
-       virtual std::vector<Item*> get (Rect const &) = 0;
-       virtual std::vector<Item*> items_at_point (Duple) const = 0;
+    virtual std::vector<Item*> get (Rect const &) = 0;
+    virtual std::vector<Item*> items_at_point (Duple const &) const = 0;
+    virtual bool has_item_at_point (Duple const & point) const = 0;
 
 protected:
-       
-       Group const & _group;
+
+    Item const & _item;
 };
 
-class DumbLookupTable : public LookupTable
+class LIBCANVAS_API DumbLookupTable : public LookupTable
 {
 public:
-       DumbLookupTable (Group const &);
+       DumbLookupTable (Item const &);
 
-       std::vector<Item*> get (Rect const &);
-       std::vector<Item*> items_at_point (Duple) const;
+    std::vector<Item*> get (Rect const &);
+    std::vector<Item*> items_at_point (Duple const &) const;
+    bool has_item_at_point (Duple const & point) const;
 };
 
-class OptimizingLookupTable : public LookupTable
+class LIBCANVAS_API OptimizingLookupTable : public LookupTable
 {
 public:
-       OptimizingLookupTable (Group const &, int);
-       ~OptimizingLookupTable ();
-       std::vector<Item*> get (Rect const &);
-       std::vector<Item*> items_at_point (Duple) const;
+    OptimizingLookupTable (Item const &, int);
+    ~OptimizingLookupTable ();
+    std::vector<Item*> get (Rect const &);
+    std::vector<Item*> items_at_point (Duple const &) const;
+    bool has_item_at_point (Duple const & point) const;
 
-       static int default_items_per_cell;
+    static int default_items_per_cell;
 
-private:
+  private:
 
-       void area_to_indices (Rect const &, int &, int &, int &, int &) const;
-       void point_to_indices (Duple, int &, int &) const;
+    void area_to_indices (Rect const &, int &, int &, int &, int &) const;
+    void point_to_indices (Duple, int &, int &) const;
 
-       friend class ::OptimizingLookupTableTest;
+    friend class ::OptimizingLookupTableTest;
 
-       typedef std::vector<Item*> Cell;
-       int _items_per_cell;
-       int _dimension;
-       Duple _cell_size;
-       Duple _offset;
-       Cell** _cells;
-       bool _added;
+    typedef std::vector<Item*> Cell;
+    int _items_per_cell;
+    int _dimension;
+    Duple _cell_size;
+    Duple _offset;
+    Cell** _cells;
+    bool _added;
 };
 
 }