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"
34 #include <pbd/statefuldestructible.h>
36 #include <ardour/automation_event.h>
46 class AutomationTimeAxisView;
59 ControlPoint (AutomationLine& al);
60 ControlPoint (const ControlPoint&, bool dummy_arg_to_force_special_copy_constructor);
61 virtual ~ControlPoint ();
69 void move_to (double x, double y, ShapeType);
70 void reset (double x, double y, ARDOUR::AutomationList::iterator, uint32_t, ShapeType);
71 double get_x() const { return _x; }
72 double get_y() const { return _y; }
76 void show_color (bool entered, bool hide_too);
78 void set_size (double);
79 void set_visible (bool);
81 ArdourCanvas::SimpleRect* item;
84 ARDOUR::AutomationList::iterator model;
89 virtual bool event_handler (GdkEvent*);
98 class AutomationLine : public sigc::trackable, public PBD::StatefulThingWithGoingAway
101 AutomationLine (const string & name, TimeAxisView&, ArdourCanvas::Group&, ARDOUR::AutomationList&);
102 virtual ~AutomationLine ();
108 void set_selected_points (PointSelection&);
109 void get_selectables (nframes_t& start, nframes_t& end,
110 double botfrac, double topfrac,
111 list<Selectable*>& results);
112 void get_inverted_selectables (Selection&, list<Selectable*>& results);
114 virtual void remove_point (ControlPoint&);
115 bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
119 virtual void start_drag (ControlPoint*, nframes_t x, float fraction);
120 virtual void point_drag(ControlPoint&, nframes_t x, float, bool with_push);
121 virtual void end_drag (ControlPoint*);
122 virtual void line_drag(uint32_t i1, uint32_t i2, float, bool with_push);
124 ControlPoint* nth (uint32_t);
125 uint32_t npoints() const { return control_points.size(); }
127 string name() const { return _name; }
128 bool visible() const { return _visible; }
129 guint32 height() const { return _height; }
131 void set_line_color (uint32_t);
132 uint32_t get_line_color() const { return _line_color; }
136 void set_height (guint32);
137 void set_verbose_cursor_uses_gain_mapping (bool yn);
139 TimeAxisView& trackview;
141 ArdourCanvas::Group& canvas_group() const { return *group; }
142 ArdourCanvas::Item& parent_group() const { return _parent_group; }
143 ArdourCanvas::Item& grab_item() const { return *line; }
145 void show_selection();
146 void hide_selection ();
148 virtual string get_verbose_cursor_string (float);
149 virtual void view_to_model_y (double&) = 0;
150 virtual void model_to_view_y (double&) = 0;
152 ARDOUR::AutomationList& the_list() const { return alist; }
154 void show_all_control_points ();
155 void hide_all_but_selected_control_points ();
157 bool is_last_point (ControlPoint &);
158 bool is_first_point (ControlPoint &);
160 XMLNode& get_state (void);
161 int set_state (const XMLNode&);
167 uint32_t _line_color;
168 ARDOUR::AutomationList& alist;
171 bool _vc_uses_gain_mapping : 1;
172 bool terminal_points_can_slide : 1;
173 bool update_pending : 1;
175 bool points_visible : 1;
178 ArdourCanvas::Group& _parent_group;
179 ArdourCanvas::Group* group;
180 ArdourCanvas::Line* line; /* line */
181 ArdourCanvas::Points line_points; /* coordinates for canvas line */
182 vector<ControlPoint*> control_points; /* visible control points */
187 ALPoint (double xx, double yy) : x(xx), y(yy) {}
190 typedef std::vector<ALPoint> ALPoints;
192 static void invalidate_point (ALPoints&, uint32_t index);
193 static bool invalid_point (ALPoints&, uint32_t index);
195 void determine_visible_control_points (ALPoints&);
196 void sync_model_with_view_point (ControlPoint&, bool did_push, int64_t distance);
197 void sync_model_with_view_line (uint32_t, uint32_t);
199 virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
200 virtual void change_model_range (ARDOUR::AutomationList::iterator,ARDOUR::AutomationList::iterator, double delta, float ydelta);
202 void reset_callback (const ARDOUR::AutomationList&);
203 void list_changed ();
205 virtual bool event_handler (GdkEvent*);
209 double first_drag_fraction;
210 double last_drag_fraction;
211 uint32_t line_drag_cp1;
212 uint32_t line_drag_cp2;
214 int64_t drag_distance;
216 void modify_view_point(ControlPoint&, double, double, bool with_push);
217 void reset_line_coords (ControlPoint&);
219 double control_point_box_size ();
221 struct ModelRepresentation {
222 ARDOUR::AutomationList::iterator start;
223 ARDOUR::AutomationList::iterator end;
234 void model_representation (ControlPoint&, ModelRepresentation&);
236 friend class AudioRegionGainLine;
239 #endif /* __ardour_automation_line_h__ */