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 <sigc++/signal.h>
30 #include "evoral/TimeConverter.hpp"
33 #include "pbd/statefuldestructible.h"
34 #include "pbd/memento_command.h"
36 #include "ardour/automation_list.h"
37 #include "ardour/types.h"
39 #include "canvas/types.h"
40 #include "canvas/group.h"
41 #include "canvas/poly_line.h"
47 class AutomationTimeAxisView;
52 /** A GUI representation of an ARDOUR::AutomationList */
53 class AutomationLine : public sigc::trackable, public PBD::StatefulDestructible
59 SelectedControlPoints = 0x4
62 AutomationLine (const std::string& name, TimeAxisView&, ArdourCanvas::Group&,
63 boost::shared_ptr<ARDOUR::AutomationList>,
64 Evoral::TimeConverter<double, ARDOUR::framepos_t>* converter = 0);
65 virtual ~AutomationLine ();
71 void set_selected_points (PointSelection const &);
72 void get_selectables (ARDOUR::framepos_t, ARDOUR::framepos_t, double, double, std::list<Selectable*>&);
73 void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
75 virtual void remove_point (ControlPoint&);
76 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
79 virtual void start_drag_single (ControlPoint*, double, float);
80 virtual void start_drag_line (uint32_t, uint32_t, float);
81 virtual void start_drag_multiple (std::list<ControlPoint*>, float, XMLNode *);
82 virtual std::pair<double, float> drag_motion (double, float, bool, bool with_push, uint32_t& final_index);
83 virtual void end_drag (bool with_push, uint32_t final_index);
85 ControlPoint* nth (uint32_t);
86 ControlPoint const * nth (uint32_t) const;
87 uint32_t npoints() const { return control_points.size(); }
89 std::string name() const { return _name; }
90 bool visible() const { return _visible != VisibleAspects(0); }
91 guint32 height() const { return _height; }
93 void set_line_color (uint32_t);
94 uint32_t get_line_color() const { return _line_color; }
96 void set_visibility (VisibleAspects);
97 void add_visibility (VisibleAspects);
98 void remove_visibility (VisibleAspects);
101 void set_height (guint32);
102 void set_uses_gain_mapping (bool yn);
103 bool get_uses_gain_mapping () const { return _uses_gain_mapping; }
105 TimeAxisView& trackview;
107 ArdourCanvas::Group& canvas_group() const { return *group; }
108 ArdourCanvas::Item& parent_group() const { return _parent_group; }
109 ArdourCanvas::Item& grab_item() const { return *line; }
111 virtual std::string get_verbose_cursor_string (double) const;
112 std::string get_verbose_cursor_relative_string (double, double) const;
113 std::string fraction_to_string (double) const;
114 std::string fraction_to_relative_string (double, double) const;
115 double string_to_fraction (std::string const &) const;
116 void view_to_model_coord (double& x, double& y) const;
117 void view_to_model_coord_y (double &) const;
118 void model_to_view_coord (double& x, double& y) const;
120 void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
121 boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
123 void track_entered();
126 bool is_last_point (ControlPoint &);
127 bool is_first_point (ControlPoint &);
129 XMLNode& get_state (void);
130 int set_state (const XMLNode&, int version);
133 void modify_point_y (ControlPoint&, double);
135 virtual MementoCommandBinder<ARDOUR::AutomationList>* memento_command_binder ();
137 const Evoral::TimeConverter<double, ARDOUR::framepos_t>& time_converter () const {
138 return *_time_converter;
141 std::pair<ARDOUR::framepos_t, ARDOUR::framepos_t> get_point_x_range () const;
143 void set_maximum_time (ARDOUR::framecnt_t);
144 ARDOUR::framecnt_t maximum_time () const {
145 return _maximum_time;
148 void set_offset (ARDOUR::framecnt_t);
149 void set_width (ARDOUR::framecnt_t);
151 framepos_t session_position (ARDOUR::AutomationList::const_iterator) const;
157 uint32_t _line_color;
159 boost::shared_ptr<ARDOUR::AutomationList> alist;
160 Evoral::TimeConverter<double, ARDOUR::framepos_t>* _time_converter;
161 /** true if _time_converter belongs to us (ie we should delete it on destruction) */
162 bool _our_time_converter;
164 VisibleAspects _visible;
166 bool _uses_gain_mapping;
167 bool terminal_points_can_slide;
172 /** true if we did a push at any point during the current drag */
175 ArdourCanvas::Group& _parent_group;
176 ArdourCanvas::Group* group;
177 ArdourCanvas::PolyLine* line; /* line */
178 ArdourCanvas::Points line_points; /* coordinates for canvas line */
179 std::vector<ControlPoint*> control_points; /* visible control points */
181 class ContiguousControlPoints : public std::list<ControlPoint*> {
183 ContiguousControlPoints (AutomationLine& al);
184 double clamp_dx (double dx);
185 void move (double dx, double dy);
186 void compute_x_bounds ();
188 AutomationLine& line;
193 friend class ContiguousControlPoints;
195 typedef boost::shared_ptr<ContiguousControlPoints> CCP;
196 std::vector<CCP> contiguous_points;
198 void sync_model_with_view_point (ControlPoint&);
199 void sync_model_with_view_points (std::list<ControlPoint*>);
200 void start_drag_common (double, float);
202 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
204 void reset_callback (const Evoral::ControlList&);
205 void list_changed ();
207 virtual bool event_handler (GdkEvent*);
210 std::list<ControlPoint*> _drag_points; ///< points we are dragging
211 std::list<ControlPoint*> _push_points; ///< additional points we are dragging if "push" is enabled
212 bool _drag_had_movement; ///< true if the drag has seen movement, otherwise false
213 double _drag_x; ///< last x position of the drag, in units
214 double _drag_distance; ///< total x movement of the drag, in canvas units
215 double _last_drag_fraction; ///< last y position of the drag, as a fraction
216 /** offset from the start of the automation list to the start of the line, so that
217 * a +ve offset means that the 0 on the line is at _offset in the list
219 ARDOUR::framecnt_t _offset;
221 void update_visibility ();
222 void reset_line_coords (ControlPoint&);
223 void add_visible_control_point (uint32_t, uint32_t, double, double, ARDOUR::AutomationList::iterator, uint32_t);
224 double control_point_box_size ();
225 void connect_to_list ();
226 void interpolation_changed (ARDOUR::AutomationList::InterpolationStyle);
228 PBD::ScopedConnectionList _list_connections;
230 /** maximum time that a point on this line can be at, relative to the position of its region or start of its track */
231 ARDOUR::framecnt_t _maximum_time;
233 friend class AudioRegionGainLine;
236 #endif /* __ardour_automation_line_h__ */