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livetrax/gtk2_ardour/automation_line.h

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/*
Copyright (C) 2002 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_automation_line_h__
#define __ardour_automation_line_h__
#include <vector>
#include <list>
#include <string>
#include <sys/types.h>
#include <libgnomecanvasmm/line.h>
#include <sigc++/signal.h>
#include "canvas.h"
#include "simplerect.h"
#include "evoral/TimeConverter.hpp"
#include "pbd/undo.h"
#include "pbd/statefuldestructible.h"
#include "pbd/memento_command.h"
#include "ardour/automation_list.h"
#include "ardour/types.h"
class AutomationLine;
class ControlPoint;
class PointSelection;
class TimeAxisView;
class AutomationTimeAxisView;
class Selectable;
class Selection;
namespace Gnome {
namespace Canvas {
class SimpleRect;
}
}
/** A GUI representation of an ARDOUR::AutomationList */
class AutomationLine : public sigc::trackable, public PBD::StatefulDestructible
{
public:
enum VisibleAspects {
Line = 0x1,
ControlPoints = 0x2,
SelectedControlPoints = 0x4
};
AutomationLine (const std::string& name, TimeAxisView&, ArdourCanvas::Group&,
boost::shared_ptr<ARDOUR::AutomationList>,
Evoral::TimeConverter<double, ARDOUR::framepos_t>* converter = 0);
virtual ~AutomationLine ();
void queue_reset ();
void reset ();
void clear ();
void set_selected_points (PointSelection const &);
void get_selectables (ARDOUR::framepos_t, ARDOUR::framepos_t, double, double, std::list<Selectable*>&);
void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
virtual void remove_point (ControlPoint&);
bool control_points_adjacent (double xval, uint32_t& before, uint32_t& after);
/* dragging API */
virtual void start_drag_single (ControlPoint*, double, float);
virtual void start_drag_line (uint32_t, uint32_t, float);
virtual void start_drag_multiple (std::list<ControlPoint*>, float, XMLNode *);
virtual std::pair<double, float> drag_motion (double, float, bool, bool);
virtual void end_drag ();
ControlPoint* nth (uint32_t);
ControlPoint const * nth (uint32_t) const;
uint32_t npoints() const { return control_points.size(); }
std::string name() const { return _name; }
bool visible() const { return _visible != VisibleAspects(0); }
guint32 height() const { return _height; }
void set_line_color (uint32_t);
uint32_t get_line_color() const { return _line_color; }
void set_visibility (VisibleAspects);
void add_visibility (VisibleAspects);
void remove_visibility (VisibleAspects);
void hide ();
void set_height (guint32);
void set_uses_gain_mapping (bool yn);
bool get_uses_gain_mapping () const { return _uses_gain_mapping; }
TimeAxisView& trackview;
ArdourCanvas::Group& canvas_group() const { return *group; }
ArdourCanvas::Item& parent_group() const { return _parent_group; }
ArdourCanvas::Item& grab_item() const { return *line; }
std::string get_verbose_cursor_string (double) const;
std::string get_verbose_cursor_relative_string (double, double) const;
std::string fraction_to_string (double) const;
std::string fraction_to_relative_string (double, double) const;
double string_to_fraction (std::string const &) const;
void view_to_model_coord (double& x, double& y) const;
void view_to_model_coord_y (double &) const;
void model_to_view_coord (double& x, double& y) const;
void set_list(boost::shared_ptr<ARDOUR::AutomationList> list);
boost::shared_ptr<ARDOUR::AutomationList> the_list() const { return alist; }
void track_entered();
void track_exited();
bool is_last_point (ControlPoint &);
bool is_first_point (ControlPoint &);
XMLNode& get_state (void);
int set_state (const XMLNode&, int version);
void set_colors();
void modify_point_y (ControlPoint&, double);
virtual MementoCommandBinder<ARDOUR::AutomationList>* memento_command_binder ();
const Evoral::TimeConverter<double, ARDOUR::framepos_t>& time_converter () const {
return *_time_converter;
}
std::pair<ARDOUR::framepos_t, ARDOUR::framepos_t> get_point_x_range () const;
void set_maximum_time (ARDOUR::framecnt_t);
ARDOUR::framecnt_t maximum_time () const {
return _maximum_time;
}
void set_offset (ARDOUR::framecnt_t);
void set_width (ARDOUR::framecnt_t);
framepos_t session_position (ARDOUR::AutomationList::const_iterator) const;
protected:
std::string _name;
guint32 _height;
uint32_t _line_color;
boost::shared_ptr<ARDOUR::AutomationList> alist;
Evoral::TimeConverter<double, ARDOUR::framepos_t>* _time_converter;
/** true if _time_converter belongs to us (ie we should delete it on destruction) */
bool _our_time_converter;
VisibleAspects _visible;
bool _uses_gain_mapping;
bool terminal_points_can_slide;
bool update_pending;
bool have_timeout;
bool no_draw;
bool _is_boolean;
/** true if we did a push at any point during the current drag */
bool did_push;
ArdourCanvas::Group& _parent_group;
ArdourCanvas::Group* group;
ArdourCanvas::Line* line; /* line */
ArdourCanvas::Points line_points; /* coordinates for canvas line */
std::vector<ControlPoint*> control_points; /* visible control points */
void sync_model_with_view_point (ControlPoint&);
void sync_model_with_view_points (std::list<ControlPoint*>);
void start_drag_common (double, float);
virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
void reset_callback (const Evoral::ControlList&);
void list_changed ();
virtual bool event_handler (GdkEvent*);
private:
std::list<ControlPoint*> _drag_points; ///< points we are dragging
std::list<ControlPoint*> _push_points; ///< additional points we are dragging if "push" is enabled
bool _drag_had_movement; ///< true if the drag has seen movement, otherwise false
double _drag_x; ///< last x position of the drag, in units
double _drag_distance; ///< total x movement of the drag, in canvas units
double _last_drag_fraction; ///< last y position of the drag, as a fraction
/** offset from the start of the automation list to the start of the line, so that
* a +ve offset means that the 0 on the line is at _offset in the list
*/
ARDOUR::framecnt_t _offset;
void show ();
void reset_line_coords (ControlPoint&);
void add_visible_control_point (uint32_t, uint32_t, double, double, ARDOUR::AutomationList::iterator, uint32_t);
double control_point_box_size ();
void connect_to_list ();
void interpolation_changed (ARDOUR::AutomationList::InterpolationStyle);
PBD::ScopedConnectionList _list_connections;
/** maximum time that a point on this line can be at, relative to the position of its region or start of its track */
ARDOUR::framecnt_t _maximum_time;
friend class AudioRegionGainLine;
};
#endif /* __ardour_automation_line_h__ */