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.
21 #ifndef __ardour_automation_line_h__
22 #define __ardour_automation_line_h__
27 #include <sys/types.h>
29 #include <libgnomecanvasmm/line.h>
30 #include <sigc++/signal.h>
32 #include "simplerect.h"
35 #include <pbd/statefuldestructible.h>
37 #include <ardour/automation_event.h>
47 class AutomationTimeAxisView;
60 ControlPoint (AutomationLine& al);
61 ControlPoint (const ControlPoint&, bool dummy_arg_to_force_special_copy_constructor);
62 virtual ~ControlPoint ();
70 void move_to (double x, double y, ShapeType);
71 void reset (double x, double y, ARDOUR::AutomationList::iterator, uint32_t, ShapeType);
72 double get_x() const { return _x; }
73 double get_y() const { return _y; }
77 void show_color (bool entered, bool hide_too);
79 void set_size (double);
80 void set_visible (bool);
82 ArdourCanvas::SimpleRect* item;
85 ARDOUR::AutomationList::iterator model;
90 virtual bool event_handler (GdkEvent*);
99 class AutomationLine : public sigc::trackable, public PBD::StatefulThingWithGoingAway
102 AutomationLine (const string & name, TimeAxisView&, ArdourCanvas::Group&, ARDOUR::AutomationList&);
103 virtual ~AutomationLine ();
109 void set_selected_points (PointSelection&);
110 void get_selectables (nframes_t& start, nframes_t& end,
111 double botfrac, double topfrac,
112 list<Selectable*>& results);
113 void get_inverted_selectables (Selection&, list<Selectable*>& results);
115 virtual void remove_point (ControlPoint&);
116 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
120 virtual void start_drag (ControlPoint*, nframes_t x, float fraction);
121 virtual void point_drag(ControlPoint&, nframes_t x, float, bool with_push);
122 virtual void end_drag (ControlPoint*);
123 virtual void line_drag(uint32_t i1, uint32_t i2, float, bool with_push);
125 ControlPoint* nth (uint32_t);
126 uint32_t npoints() const { return control_points.size(); }
128 string name() const { return _name; }
129 bool visible() const { return _visible; }
130 guint32 height() const { return _height; }
132 void set_line_color (uint32_t);
133 uint32_t get_line_color() const { return _line_color; }
137 void set_height (guint32);
138 void set_verbose_cursor_uses_gain_mapping (bool yn);
140 TimeAxisView& trackview;
142 ArdourCanvas::Group& canvas_group() const { return *group; }
143 ArdourCanvas::Item& parent_group() const { return _parent_group; }
144 ArdourCanvas::Item& grab_item() const { return *line; }
146 void show_selection();
147 void hide_selection ();
149 virtual string get_verbose_cursor_string (float);
150 virtual void view_to_model_y (double&) = 0;
151 virtual void model_to_view_y (double&) = 0;
153 ARDOUR::AutomationList& the_list() const { return alist; }
155 void show_all_control_points ();
156 void hide_all_but_selected_control_points ();
158 bool is_last_point (ControlPoint &);
159 bool is_first_point (ControlPoint &);
161 XMLNode& get_state (void);
162 int set_state (const XMLNode&);
168 uint32_t _line_color;
169 ARDOUR::AutomationList& alist;
172 bool _vc_uses_gain_mapping : 1;
173 bool terminal_points_can_slide : 1;
174 bool update_pending : 1;
176 bool points_visible : 1;
179 ArdourCanvas::Group& _parent_group;
180 ArdourCanvas::Group* group;
181 ArdourCanvas::Line* line; /* line */
182 ArdourCanvas::Points line_points; /* coordinates for canvas line */
183 vector<ControlPoint*> control_points; /* visible control points */
188 ALPoint (double xx, double yy) : x(xx), y(yy) {}
191 typedef std::vector<ALPoint> ALPoints;
193 static void invalidate_point (ALPoints&, uint32_t index);
194 static bool invalid_point (ALPoints&, uint32_t index);
196 void determine_visible_control_points (ALPoints&);
197 void sync_model_with_view_point (ControlPoint&, bool did_push, int64_t distance);
198 void sync_model_with_view_line (uint32_t, uint32_t);
200 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
201 virtual void change_model_range (ARDOUR::AutomationList::iterator,ARDOUR::AutomationList::iterator, double delta, float ydelta);
203 void reset_callback (const ARDOUR::AutomationList&);
204 void list_changed ();
206 virtual bool event_handler (GdkEvent*);
210 double first_drag_fraction;
211 double last_drag_fraction;
212 uint32_t line_drag_cp1;
213 uint32_t line_drag_cp2;
215 int64_t drag_distance;
217 void modify_view_point(ControlPoint&, double, double, bool with_push);
218 void reset_line_coords (ControlPoint&);
220 double control_point_box_size ();
222 struct ModelRepresentation {
223 ARDOUR::AutomationList::iterator start;
224 ARDOUR::AutomationList::iterator end;
235 void model_representation (ControlPoint&, ModelRepresentation&);
237 friend class AudioRegionGainLine;
240 #endif /* __ardour_automation_line_h__ */