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 class AutomationLine : public sigc::trackable, public PBD::StatefulThingWithGoingAway
58 AutomationLine (const std::string& name, TimeAxisView&, ArdourCanvas::Group&,
59 boost::shared_ptr<ARDOUR::AutomationList>,
60 const Evoral::TimeConverter<double, ARDOUR::sframes_t>* converter = 0);
61 virtual ~AutomationLine ();
67 void set_selected_points (PointSelection&);
68 void get_selectables (nframes_t& start, nframes_t& end,
69 double botfrac, double topfrac,
70 std::list<Selectable*>& results);
71 void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
73 virtual void remove_point (ControlPoint&);
74 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
77 virtual void start_drag (ControlPoint*, nframes_t x, float fraction);
78 virtual void point_drag(ControlPoint&, nframes_t x, float, bool with_push);
79 virtual void end_drag (ControlPoint*);
80 virtual void line_drag(uint32_t i1, uint32_t i2, float, bool with_push);
82 ControlPoint* nth (uint32_t);
83 uint32_t npoints() const { return control_points.size(); }
85 std::string name() const { return _name; }
86 bool visible() const { return _visible; }
87 guint32 height() const { return _height; }
89 void set_line_color (uint32_t);
90 uint32_t get_line_color() const { return _line_color; }
92 void set_interpolation(ARDOUR::AutomationList::InterpolationStyle style);
96 void set_height (guint32);
97 void set_uses_gain_mapping (bool yn);
98 bool get_uses_gain_mapping () const { return _uses_gain_mapping; }
100 TimeAxisView& trackview;
102 ArdourCanvas::Group& canvas_group() const { return *group; }
103 ArdourCanvas::Item& parent_group() const { return _parent_group; }
104 ArdourCanvas::Item& grab_item() const { return *line; }
106 void show_selection();
107 void hide_selection ();
109 std::string get_verbose_cursor_string (double) const;
110 std::string fraction_to_string (double) const;
111 double string_to_fraction (std::string const &) const;
112 void view_to_model_coord (double& x, double& y) const;
113 void model_to_view_coord (double& x, double& y) const;
115 void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
116 boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
118 void show_all_control_points ();
119 void hide_all_but_selected_control_points ();
121 void track_entered();
124 bool is_last_point (ControlPoint &);
125 bool is_first_point (ControlPoint &);
127 XMLNode& get_state (void);
128 int set_state (const XMLNode&);
131 void modify_point_y (ControlPoint&, double);
137 uint32_t _line_color;
139 boost::shared_ptr<ARDOUR::AutomationList> alist;
142 bool _uses_gain_mapping : 1;
143 bool terminal_points_can_slide : 1;
144 bool update_pending : 1;
146 bool points_visible : 1;
149 ArdourCanvas::Group& _parent_group;
150 ArdourCanvas::Group* group;
151 ArdourCanvas::Line* line; /* line */
152 ArdourCanvas::Points line_points; /* coordinates for canvas line */
153 std::vector<ControlPoint*> control_points; /* visible control points */
158 ALPoint (double xx, double yy) : x(xx), y(yy) {}
161 typedef std::vector<ALPoint> ALPoints;
163 static void invalidate_point (ALPoints&, uint32_t index);
164 static bool invalid_point (ALPoints&, uint32_t index);
166 void determine_visible_control_points (ALPoints&);
167 void sync_model_with_view_point (ControlPoint&, bool did_push, int64_t distance);
168 void sync_model_with_view_line (uint32_t, uint32_t);
170 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
172 void reset_callback (const Evoral::ControlList&);
173 void list_changed ();
175 virtual bool event_handler (GdkEvent*);
176 virtual void add_model_point (ALPoints& tmp_points, double frame, double yfract);
180 double first_drag_fraction;
181 double last_drag_fraction;
182 uint32_t line_drag_cp1;
183 uint32_t line_drag_cp2;
185 int64_t drag_distance;
187 const Evoral::TimeConverter<double, ARDOUR::sframes_t>& _time_converter;
188 ARDOUR::AutomationList::InterpolationStyle _interpolation;
190 void modify_view_point (ControlPoint&, double, double, bool with_push);
191 void reset_line_coords (ControlPoint&);
193 double control_point_box_size ();
195 struct ModelRepresentation {
196 ARDOUR::AutomationList::iterator start;
197 ARDOUR::AutomationList::iterator end;
208 void model_representation (ControlPoint&, ModelRepresentation&);
210 friend class AudioRegionGainLine;
213 #endif /* __ardour_automation_line_h__ */