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/parameter_descriptor.h"
38 #include "ardour/types.h"
40 #include "canvas/types.h"
41 #include "canvas/container.h"
42 #include "canvas/poly_line.h"
48 class AutomationTimeAxisView;
54 /** A GUI representation of an ARDOUR::AutomationList */
55 class AutomationLine : public sigc::trackable, public PBD::StatefulDestructible
61 SelectedControlPoints = 0x4
64 AutomationLine (const std::string& name,
66 ArdourCanvas::Item& parent,
67 boost::shared_ptr<ARDOUR::AutomationList> al,
68 const ARDOUR::ParameterDescriptor& desc,
69 Evoral::TimeConverter<double, ARDOUR::framepos_t>* converter = 0);
71 virtual ~AutomationLine ();
76 void set_fill (bool f) { _fill = f; } // owner needs to call set_height
78 void set_selected_points (PointSelection const &);
79 void get_selectables (ARDOUR::framepos_t, ARDOUR::framepos_t, double, double, std::list<Selectable*>&);
80 void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
82 virtual void remove_point (ControlPoint&);
83 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
86 virtual void start_drag_single (ControlPoint*, double, float);
87 virtual void start_drag_line (uint32_t, uint32_t, float);
88 virtual void start_drag_multiple (std::list<ControlPoint*>, float, XMLNode *);
89 virtual std::pair<float, float> drag_motion (double, float, bool, bool with_push, uint32_t& final_index);
90 virtual void end_drag (bool with_push, uint32_t final_index);
92 ControlPoint* nth (uint32_t);
93 ControlPoint const * nth (uint32_t) const;
94 uint32_t npoints() const { return control_points.size(); }
96 std::string name() const { return _name; }
97 bool visible() const { return _visible != VisibleAspects(0); }
98 guint32 height() const { return _height; }
100 void set_line_color (uint32_t);
101 uint32_t get_line_color() const { return _line_color; }
103 void set_visibility (VisibleAspects);
104 void add_visibility (VisibleAspects);
105 void remove_visibility (VisibleAspects);
108 void set_height (guint32);
110 bool get_uses_gain_mapping () const;
112 TimeAxisView& trackview;
114 ArdourCanvas::Container& canvas_group() const { return *group; }
115 ArdourCanvas::Item& parent_group() const { return _parent_group; }
116 ArdourCanvas::Item& grab_item() const { return *line; }
118 virtual std::string get_verbose_cursor_string (double) const;
119 std::string get_verbose_cursor_relative_string (double, double) const;
120 std::string fraction_to_string (double) const;
121 std::string delta_to_string (double) const;
122 double string_to_fraction (std::string const &) const;
123 void view_to_model_coord (double& x, double& y) const;
124 void view_to_model_coord_y (double &) const;
125 void model_to_view_coord (double& x, double& y) const;
126 void model_to_view_coord_y (double &) const;
128 double compute_delta (double from, double to) const;
129 void apply_delta (double& val, double delta) const;
131 void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
132 boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
134 void track_entered();
137 bool is_last_point (ControlPoint &);
138 bool is_first_point (ControlPoint &);
140 XMLNode& get_state (void);
141 int set_state (const XMLNode&, int version);
144 void modify_point_y (ControlPoint&, double);
146 virtual MementoCommandBinder<ARDOUR::AutomationList>* memento_command_binder ();
148 const Evoral::TimeConverter<double, ARDOUR::framepos_t>& time_converter () const {
149 return *_time_converter;
152 std::pair<ARDOUR::framepos_t, ARDOUR::framepos_t> get_point_x_range () const;
154 void set_maximum_time (ARDOUR::framecnt_t);
155 ARDOUR::framecnt_t maximum_time () const {
156 return _maximum_time;
159 void set_offset (ARDOUR::framecnt_t);
160 ARDOUR::framecnt_t offset () { return _offset; }
161 void set_width (ARDOUR::framecnt_t);
163 framepos_t session_position (ARDOUR::AutomationList::const_iterator) const;
169 uint32_t _line_color;
171 boost::shared_ptr<ARDOUR::AutomationList> alist;
172 Evoral::TimeConverter<double, ARDOUR::framepos_t>* _time_converter;
173 /** true if _time_converter belongs to us (ie we should delete it on destruction) */
174 bool _our_time_converter;
176 VisibleAspects _visible;
178 bool terminal_points_can_slide;
183 /** true if we did a push at any point during the current drag */
186 ArdourCanvas::Item& _parent_group;
187 ArdourCanvas::Container* group;
188 ArdourCanvas::PolyLine* line; /* line */
189 ArdourCanvas::Points line_points; /* coordinates for canvas line */
190 std::vector<ControlPoint*> control_points; /* visible control points */
192 class ContiguousControlPoints : public std::list<ControlPoint*> {
194 ContiguousControlPoints (AutomationLine& al);
195 double clamp_dx (double dx);
196 void move (double dx, double dvalue);
197 void compute_x_bounds (PublicEditor& e);
199 AutomationLine& line;
204 friend class ContiguousControlPoints;
206 typedef boost::shared_ptr<ContiguousControlPoints> CCP;
207 std::vector<CCP> contiguous_points;
209 bool sync_model_with_view_point (ControlPoint&);
210 bool sync_model_with_view_points (std::list<ControlPoint*>);
211 void start_drag_common (double, float);
213 void reset_callback (const Evoral::ControlList&);
214 void list_changed ();
216 virtual bool event_handler (GdkEvent*);
219 std::list<ControlPoint*> _drag_points; ///< points we are dragging
220 std::list<ControlPoint*> _push_points; ///< additional points we are dragging if "push" is enabled
221 bool _drag_had_movement; ///< true if the drag has seen movement, otherwise false
222 double _drag_x; ///< last x position of the drag, in units
223 double _drag_distance; ///< total x movement of the drag, in canvas units
224 double _last_drag_fraction; ///< last y position of the drag, as a fraction
225 /** offset from the start of the automation list to the start of the line, so that
226 * a +ve offset means that the 0 on the line is at _offset in the list
228 ARDOUR::framecnt_t _offset;
230 bool is_stepped() const;
231 void update_visibility ();
232 void reset_line_coords (ControlPoint&);
233 void add_visible_control_point (uint32_t, uint32_t, double, double, ARDOUR::AutomationList::iterator, uint32_t);
234 double control_point_box_size ();
235 void connect_to_list ();
236 void interpolation_changed (ARDOUR::AutomationList::InterpolationStyle);
238 PBD::ScopedConnectionList _list_connections;
240 /** maximum time that a point on this line can be at, relative to the position of its region or start of its track */
241 ARDOUR::framecnt_t _maximum_time;
245 const ARDOUR::ParameterDescriptor _desc;
247 friend class AudioRegionGainLine;
250 #endif /* __ardour_automation_line_h__ */