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>
44 class AutomationTimeAxisView;
54 class AutomationLine : public sigc::trackable, public PBD::StatefulThingWithGoingAway
57 AutomationLine (const string& name, TimeAxisView&, ArdourCanvas::Group&,
58 boost::shared_ptr<ARDOUR::AutomationList>,
59 const Evoral::TimeConverter<double, nframes_t>* converter = 0);
60 virtual ~AutomationLine ();
66 void set_selected_points (PointSelection&);
67 void get_selectables (nframes_t& start, nframes_t& end,
68 double botfrac, double topfrac,
69 std::list<Selectable*>& results);
70 void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
72 virtual void remove_point (ControlPoint&);
73 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
76 virtual void start_drag (ControlPoint*, nframes_t x, float fraction);
77 virtual void point_drag(ControlPoint&, nframes_t x, float, bool with_push);
78 virtual void end_drag (ControlPoint*);
79 virtual void line_drag(uint32_t i1, uint32_t i2, float, bool with_push);
81 ControlPoint* nth (uint32_t);
82 uint32_t npoints() const { return control_points.size(); }
84 string name() const { return _name; }
85 bool visible() const { return _visible; }
86 guint32 height() const { return _height; }
88 void set_line_color (uint32_t);
89 uint32_t get_line_color() const { return _line_color; }
91 void set_interpolation(ARDOUR::AutomationList::InterpolationStyle style);
95 void set_height (guint32);
96 void set_uses_gain_mapping (bool yn);
97 bool get_uses_gain_mapping () const { return _uses_gain_mapping; }
99 TimeAxisView& trackview;
101 ArdourCanvas::Group& canvas_group() const { return *group; }
102 ArdourCanvas::Item& parent_group() const { return _parent_group; }
103 ArdourCanvas::Item& grab_item() const { return *line; }
105 void show_selection();
106 void hide_selection ();
108 string get_verbose_cursor_string (double) const;
109 string fraction_to_string (double) const;
110 double string_to_fraction (string const &) const;
111 void view_to_model_coord (double& x, double& y) const;
112 void model_to_view_coord (double& x, double& y) const;
114 void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
115 boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
117 void show_all_control_points ();
118 void hide_all_but_selected_control_points ();
120 void track_entered();
123 bool is_last_point (ControlPoint &);
124 bool is_first_point (ControlPoint &);
126 XMLNode& get_state (void);
127 int set_state (const XMLNode&);
130 void modify_point_y (ControlPoint&, double);
136 uint32_t _line_color;
138 boost::shared_ptr<ARDOUR::AutomationList> alist;
141 bool _uses_gain_mapping : 1;
142 bool terminal_points_can_slide : 1;
143 bool update_pending : 1;
145 bool points_visible : 1;
148 ArdourCanvas::Group& _parent_group;
149 ArdourCanvas::Group* group;
150 ArdourCanvas::Line* line; /* line */
151 ArdourCanvas::Points line_points; /* coordinates for canvas line */
152 std::vector<ControlPoint*> control_points; /* visible control points */
157 ALPoint (double xx, double yy) : x(xx), y(yy) {}
160 typedef std::vector<ALPoint> ALPoints;
162 static void invalidate_point (ALPoints&, uint32_t index);
163 static bool invalid_point (ALPoints&, uint32_t index);
165 void determine_visible_control_points (ALPoints&);
166 void sync_model_with_view_point (ControlPoint&, bool did_push, int64_t distance);
167 void sync_model_with_view_line (uint32_t, uint32_t);
169 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
171 void reset_callback (const Evoral::ControlList&);
172 void list_changed ();
174 virtual bool event_handler (GdkEvent*);
175 virtual void add_model_point (ALPoints& tmp_points, double frame, double yfract);
179 double first_drag_fraction;
180 double last_drag_fraction;
181 uint32_t line_drag_cp1;
182 uint32_t line_drag_cp2;
184 int64_t drag_distance;
186 const Evoral::TimeConverter<double, nframes_t>& _time_converter;
187 ARDOUR::AutomationList::InterpolationStyle _interpolation;
189 void modify_view_point (ControlPoint&, double, double, bool with_push);
190 void reset_line_coords (ControlPoint&);
192 double control_point_box_size ();
194 struct ModelRepresentation {
195 ARDOUR::AutomationList::iterator start;
196 ARDOUR::AutomationList::iterator end;
207 void model_representation (ControlPoint&, ModelRepresentation&);
209 friend class AudioRegionGainLine;
212 #endif /* __ardour_automation_line_h__ */