#include "canvas/visibility.h"
#include "canvas/types.h"
+#include "canvas/fill.h"
+#include "canvas/outline.h"
+#include "canvas/lookup_table.h"
namespace ArdourCanvas
{
+struct Rect;
class Canvas;
-class Group;
-class Rect;
class ScrollGroup;
/** The parent class for anything that goes on the canvas.
* and all except the `root group' have a pointer to their parent group.
*/
-class LIBCANVAS_API Item
+class LIBCANVAS_API Item : public Fill, public Outline
{
public:
Item (Canvas *);
- Item (Group *);
- Item (Group *, Duple);
+ Item (Item *);
+ Item (Item *, Duple const& p);
virtual ~Item ();
void redraw () const;
*
* Note that Item::add_items_at_window_point() is only intended to be
* called on items already looked up in a LookupTable (i.e. by a
- * parent group) and thus known to cover @param point already.
+ * parent) and thus known to cover @param point already.
*
- * Derived classes may add more items than themselves (e.g. Group).
+ * Derived classes may add more items than themselves (e.g. containers).
*/
- virtual void add_items_at_point (Duple /*point*/, std::vector<Item const *>& items) const {
- items.push_back (this);
- }
+ virtual void add_items_at_point (Duple /*point*/, std::vector<Item const *>& items) const;
virtual bool covers (Duple const &) const;
void ungrab ();
void unparent ();
- void reparent (Group *);
+ void reparent (Item *);
/** @return Parent group, or 0 if this is the root group */
- Group* parent () const {
+ Item* parent () const {
return _parent;
}
void set_y_position (Coord);
void move (Duple);
- virtual void scroll_to (Duple const&) {}
-
/** @return Position of this item in the parent's coordinates */
Duple position () const {
return _position;
}
Duple window_origin() const;
+ Duple canvas_origin() const;
ScrollGroup* scroll_parent() const { return _scroll_parent; }
void set_data (std::string const &, void *);
void* get_data (std::string const &) const;
+
+ /* nested item ("grouping") API */
+ void add (Item *);
+ void remove (Item *);
+ void clear (bool with_delete = false);
+ std::list<Item*> const & items () const {
+ return _items;
+ }
+ void raise_child_to_top (Item *);
+ void raise_child (Item *, int);
+ void lower_child_to_bottom (Item *);
+ void child_changed ();
+
+ static int default_items_per_cell;
+
/* This is a sigc++ signal because it is solely
concerned with GUI stuff and is thus single-threaded
std::string whatami() const;
protected:
+ friend class Fill;
+ friend class Outline;
/** To be called at the beginning of any property change that
* may alter the bounding box of this item
Canvas* _canvas;
/** parent group; may be 0 if we are the root group or if we have been unparent()ed */
- Group* _parent;
+ Item* _parent;
/** scroll parent group; may be 0 if we are the root group or if we have been unparent()ed */
ScrollGroup* _scroll_parent;
/** position of this item in parent coordinates */
/* XXX: this is a bit grubby */
std::map<std::string, void *> _data;
+ /* nesting ("grouping") API */
+
+ void invalidate_lut () const;
+ void clear_items (bool with_delete);
+
+ void ensure_lut () const;
+ mutable LookupTable* _lut;
+ /* our items, from lowest to highest in the stack */
+ std::list<Item*> _items;
+
+ void add_child_bounding_boxes() const;
+ void render_children (Rect const & area, Cairo::RefPtr<Cairo::Context> context) const;
+
private:
void init ();