2 Copyright (C) 2002 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __ardour_automation_line_h__
21 #define __ardour_automation_line_h__
26 #include <sys/types.h>
28 #include <libgnomecanvasmm/line.h>
29 #include <sigc++/signal.h>
31 #include "simplerect.h"
33 #include "evoral/TimeConverter.hpp"
36 #include "pbd/statefuldestructible.h"
37 #include "pbd/memento_command.h"
39 #include "ardour/automation_list.h"
40 #include "ardour/types.h"
46 class AutomationTimeAxisView;
56 /** A GUI representation of an ARDOUR::AutomationList */
57 class AutomationLine : public sigc::trackable, public PBD::StatefulDestructible
63 SelectedControlPoints = 0x4
66 AutomationLine (const std::string& name, TimeAxisView&, ArdourCanvas::Group&,
67 boost::shared_ptr<ARDOUR::AutomationList>,
68 Evoral::TimeConverter<double, ARDOUR::framepos_t>* converter = 0);
69 virtual ~AutomationLine ();
75 void set_selected_points (PointSelection const &);
76 void get_selectables (ARDOUR::framepos_t, ARDOUR::framepos_t, double, double, std::list<Selectable*>&);
77 void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
79 virtual void remove_point (ControlPoint&);
80 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
83 virtual void start_drag_single (ControlPoint*, double, float);
84 virtual void start_drag_line (uint32_t, uint32_t, float);
85 virtual void start_drag_multiple (std::list<ControlPoint*>, float, XMLNode *);
86 virtual std::pair<double, float> drag_motion (double, float, bool, bool);
87 virtual void end_drag ();
89 ControlPoint* nth (uint32_t);
90 ControlPoint const * nth (uint32_t) const;
91 uint32_t npoints() const { return control_points.size(); }
93 std::string name() const { return _name; }
94 bool visible() const { return _visible != VisibleAspects(0); }
95 guint32 height() const { return _height; }
97 void set_line_color (uint32_t);
98 uint32_t get_line_color() const { return _line_color; }
100 void set_visibility (VisibleAspects);
101 void add_visibility (VisibleAspects);
102 void remove_visibility (VisibleAspects);
105 void set_height (guint32);
106 void set_uses_gain_mapping (bool yn);
107 bool get_uses_gain_mapping () const { return _uses_gain_mapping; }
109 TimeAxisView& trackview;
111 ArdourCanvas::Group& canvas_group() const { return *group; }
112 ArdourCanvas::Item& parent_group() const { return _parent_group; }
113 ArdourCanvas::Item& grab_item() const { return *line; }
115 std::string get_verbose_cursor_string (double) const;
116 std::string fraction_to_string (double) const;
117 double string_to_fraction (std::string const &) const;
118 void view_to_model_coord (double& x, double& y) const;
119 void view_to_model_coord_y (double &) const;
120 void model_to_view_coord (double& x, double& y) const;
122 void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
123 boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
125 void track_entered();
128 bool is_last_point (ControlPoint &);
129 bool is_first_point (ControlPoint &);
131 XMLNode& get_state (void);
132 int set_state (const XMLNode&, int version);
135 void modify_point_y (ControlPoint&, double);
137 virtual MementoCommandBinder<ARDOUR::AutomationList>* memento_command_binder ();
139 const Evoral::TimeConverter<double, ARDOUR::framepos_t>& time_converter () const {
140 return *_time_converter;
143 std::pair<ARDOUR::framepos_t, ARDOUR::framepos_t> get_point_x_range () const;
145 void set_maximum_time (ARDOUR::framecnt_t);
146 ARDOUR::framecnt_t maximum_time () const {
147 return _maximum_time;
150 void set_offset (ARDOUR::framecnt_t);
151 void set_width (ARDOUR::framecnt_t);
153 framepos_t session_position (ARDOUR::AutomationList::const_iterator) const;
159 uint32_t _line_color;
161 boost::shared_ptr<ARDOUR::AutomationList> alist;
162 Evoral::TimeConverter<double, ARDOUR::framepos_t>* _time_converter;
163 /** true if _time_converter belongs to us (ie we should delete it on destruction) */
164 bool _our_time_converter;
166 VisibleAspects _visible;
168 bool _uses_gain_mapping : 1;
169 bool terminal_points_can_slide : 1;
170 bool update_pending : 1;
172 bool _is_boolean : 1;
173 /** true if we did a push at any point during the current drag */
176 ArdourCanvas::Group& _parent_group;
177 ArdourCanvas::Group* group;
178 ArdourCanvas::Line* line; /* line */
179 ArdourCanvas::Points line_points; /* coordinates for canvas line */
180 std::vector<ControlPoint*> control_points; /* visible control points */
182 void sync_model_with_view_point (ControlPoint&, ARDOUR::framecnt_t);
183 void sync_model_with_view_points (std::list<ControlPoint*>, ARDOUR::framecnt_t);
184 void start_drag_common (double, float);
186 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
188 void reset_callback (const Evoral::ControlList&);
189 void list_changed ();
191 virtual bool event_handler (GdkEvent*);
194 std::list<ControlPoint*> _drag_points; ///< points we are dragging
195 std::list<ControlPoint*> _push_points; ///< additional points we are dragging if "push" is enabled
196 bool _drag_had_movement; ///< true if the drag has seen movement, otherwise false
197 double _drag_x; ///< last x position of the drag, in units
198 double _drag_distance; ///< total x movement of the drag, in canvas units
199 double _last_drag_fraction; ///< last y position of the drag, as a fraction
200 /** offset from the start of the automation list to the start of the line, so that
201 * a +ve offset means that the 0 on the line is at _offset in the list
203 ARDOUR::framecnt_t _offset;
206 void reset_line_coords (ControlPoint&);
207 void add_visible_control_point (uint32_t, uint32_t, double, double, ARDOUR::AutomationList::iterator, uint32_t);
208 double control_point_box_size ();
209 void connect_to_list ();
210 void interpolation_changed (ARDOUR::AutomationList::InterpolationStyle);
212 PBD::ScopedConnectionList _list_connections;
214 /** maximum time that a point on this line can be at, relative to the position of its region or start of its track */
215 ARDOUR::framecnt_t _maximum_time;
217 friend class AudioRegionGainLine;
220 #endif /* __ardour_automation_line_h__ */