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"
38 #include "ardour/automation_list.h"
39 #include "ardour/types.h"
45 class AutomationTimeAxisView;
55 /** A GUI representation of an ARDOUR::AutomationList */
56 class AutomationLine : public sigc::trackable, public PBD::StatefulDestructible
59 AutomationLine (const std::string& name, TimeAxisView&, ArdourCanvas::Group&,
60 boost::shared_ptr<ARDOUR::AutomationList>,
61 const Evoral::TimeConverter<double, ARDOUR::sframes_t>* converter = 0);
62 virtual ~AutomationLine ();
68 std::list<ControlPoint*> point_selection_to_control_points (PointSelection const &);
69 void set_selected_points (PointSelection&);
70 void get_selectables (nframes_t& start, nframes_t& end,
71 double botfrac, double topfrac,
72 std::list<Selectable*>& results);
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);
83 virtual void end_drag ();
85 ControlPoint* nth (uint32_t);
86 uint32_t npoints() const { return control_points.size(); }
88 std::string name() const { return _name; }
89 bool visible() const { return _visible; }
90 guint32 height() const { return _height; }
92 void set_line_color (uint32_t);
93 uint32_t get_line_color() const { return _line_color; }
97 void set_height (guint32);
98 void set_uses_gain_mapping (bool yn);
99 bool get_uses_gain_mapping () const { return _uses_gain_mapping; }
101 TimeAxisView& trackview;
103 ArdourCanvas::Group& canvas_group() const { return *group; }
104 ArdourCanvas::Item& parent_group() const { return _parent_group; }
105 ArdourCanvas::Item& grab_item() const { return *line; }
107 std::string get_verbose_cursor_string (double) const;
108 std::string fraction_to_string (double) const;
109 double string_to_fraction (std::string const &) const;
110 void view_to_model_coord (double& x, double& y) const;
111 void model_to_view_coord (double& x, double& y) const;
113 void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
114 boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
116 void show_all_control_points ();
117 void hide_all_but_selected_control_points ();
119 void track_entered();
122 bool is_last_point (ControlPoint &);
123 bool is_first_point (ControlPoint &);
125 XMLNode& get_state (void);
126 int set_state (const XMLNode&, int version);
129 void modify_point_y (ControlPoint&, double);
131 void add_always_in_view (double);
132 void clear_always_in_view ();
138 uint32_t _line_color;
140 boost::shared_ptr<ARDOUR::AutomationList> alist;
143 bool _uses_gain_mapping : 1;
144 bool terminal_points_can_slide : 1;
145 bool update_pending : 1;
147 bool points_visible : 1;
150 ArdourCanvas::Group& _parent_group;
151 ArdourCanvas::Group* group;
152 ArdourCanvas::Line* line; /* line */
153 ArdourCanvas::Points line_points; /* coordinates for canvas line */
154 std::vector<ControlPoint*> control_points; /* visible control points */
159 ALPoint (double xx, double yy) : x(xx), y(yy) {}
162 typedef std::vector<ALPoint> ALPoints;
164 static void invalidate_point (ALPoints&, uint32_t index);
165 static bool invalid_point (ALPoints&, uint32_t index);
167 void determine_visible_control_points (ALPoints&);
168 void sync_model_with_view_point (ControlPoint&, bool, int64_t);
169 void sync_model_with_view_points (std::list<ControlPoint*>, bool, int64_t);
170 void start_drag_common (double, float);
172 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
174 void reset_callback (const Evoral::ControlList&);
175 void list_changed ();
177 virtual bool event_handler (GdkEvent*);
178 virtual void add_model_point (ALPoints& tmp_points, double frame, double yfract);
181 std::list<ControlPoint*> _drag_points; ///< points we are dragging
182 std::list<ControlPoint*> _push_points; ///< additional points we are dragging if "push" is enabled
183 bool _drag_had_movement; ///< true if the drag has seen movement, otherwise false
184 double _drag_x; ///< last x position of the drag, in units
185 double _drag_distance; ///< total x movement of the drag, in units
186 double _last_drag_fraction; ///< last y position of the drag, as a fraction
187 std::list<double> _always_in_view;
189 const Evoral::TimeConverter<double, ARDOUR::sframes_t>& _time_converter;
191 void reset_line_coords (ControlPoint&);
192 void add_visible_control_point (uint32_t, uint32_t, double, double, ARDOUR::AutomationList::iterator, uint32_t);
193 double control_point_box_size ();
194 void connect_to_list ();
195 void interpolation_changed (ARDOUR::AutomationList::InterpolationStyle);
197 struct ModelRepresentation {
198 ARDOUR::AutomationList::iterator start;
199 ARDOUR::AutomationList::iterator end;
210 void model_representation (ControlPoint&, ModelRepresentation&);
212 PBD::ScopedConnectionList _list_connections;
214 friend class AudioRegionGainLine;
217 #endif /* __ardour_automation_line_h__ */