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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.
$Id$
*/
#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 <pbd/undo.h>
#include <pbd/statefuldestructible.h>
#include <ardour/automation_event.h>
using std::vector;
using std::string;
class AutomationLine;
class ControlPoint;
class PointSelection;
class TimeAxisView;
class AutomationTimeAxisView;
class Selectable;
class Selection;
namespace Gnome {
namespace Canvas {
class SimpleRect;
}
}
class ControlPoint
{
public:
ControlPoint (AutomationLine& al);
ControlPoint (const ControlPoint&, bool dummy_arg_to_force_special_copy_constructor);
virtual ~ControlPoint ();
enum ShapeType {
Full,
Start,
End
};
void move_to (double x, double y, ShapeType);
void reset (double x, double y, ARDOUR::AutomationList::iterator, uint32_t, ShapeType);
double get_x() const { return _x; }
double get_y() const { return _y; }
void hide ();
void show ();
void show_color (bool entered, bool hide_too);
void set_size (double);
void set_visible (bool);
ArdourCanvas::SimpleRect* item;
AutomationLine& line;
uint32_t view_index;
ARDOUR::AutomationList::iterator model;
bool can_slide;
bool selected;
protected:
virtual bool event_handler (GdkEvent*);
private:
double _x;
double _y;
double _size;
ShapeType _shape;
};
class AutomationLine : public sigc::trackable, public PBD::StatefulThingWithGoingAway
{
public:
AutomationLine (const string & name, TimeAxisView&, ArdourCanvas::Group&, ARDOUR::AutomationList&);
virtual ~AutomationLine ();
void queue_reset ();
void reset ();
void clear();
void set_selected_points (PointSelection&);
void get_selectables (nframes_t& start, nframes_t& end,
double botfrac, double topfrac,
list<Selectable*>& results);
void get_inverted_selectables (Selection&, 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 (ControlPoint*, float fraction);
virtual void point_drag(ControlPoint&, nframes_t x, float, bool with_push);
virtual void end_drag (ControlPoint*);
virtual void line_drag(uint32_t i1, uint32_t i2, float, bool with_push);
ControlPoint* nth (uint32_t);
uint32_t npoints() const { return control_points.size(); }
string name() const { return _name; }
bool visible() const { return _visible; }
guint32 height() const { return _height; }
void set_line_color (uint32_t);
uint32_t get_line_color() const { return _line_color; }
void show ();
void hide ();
void set_height (guint32);
void set_verbose_cursor_uses_gain_mapping (bool yn);
TimeAxisView& trackview;
ArdourCanvas::Group& canvas_group() const { return *group; }
ArdourCanvas::Item& parent_group() const { return _parent_group; }
ArdourCanvas::Item& grab_item() const { return *line; }
void show_selection();
void hide_selection ();
void set_point_size (double size);
virtual string get_verbose_cursor_string (float);
virtual void view_to_model_y (double&) = 0;
virtual void model_to_view_y (double&) = 0;
ARDOUR::AutomationList& the_list() const { return alist; }
void show_all_control_points ();
void hide_all_but_selected_control_points ();
bool is_last_point (ControlPoint &);
bool is_first_point (ControlPoint &);
XMLNode& get_state (void);
int set_state (const XMLNode&);
protected:
string _name;
guint32 _height;
uint32_t _line_color;
ARDOUR::AutomationList& alist;
bool _visible : 1;
bool _vc_uses_gain_mapping : 1;
bool terminal_points_can_slide : 1;
bool update_pending : 1;
bool no_draw : 1;
bool points_visible : 1;
ArdourCanvas::Group& _parent_group;
ArdourCanvas::Group* group;
ArdourCanvas::Line* line; /* line */
ArdourCanvas::Points line_points; /* coordinates for canvas line */
vector<ControlPoint*> control_points; /* visible control points */
struct ALPoint {
double x;
double y;
ALPoint (double xx, double yy) : x(xx), y(yy) {}
};
typedef std::vector<ALPoint> ALPoints;
static void invalidate_point (ALPoints&, uint32_t index);
static bool invalid_point (ALPoints&, uint32_t index);
void determine_visible_control_points (ALPoints&);
void sync_model_from (ControlPoint&);
void sync_model_with_view_point (ControlPoint&);
void sync_model_with_view_line (uint32_t, uint32_t);
void modify_view (ControlPoint&, double, double, bool with_push);
virtual void change_model (ARDOUR::AutomationList::iterator, double x, double y);
virtual void change_model_range (ARDOUR::AutomationList::iterator,ARDOUR::AutomationList::iterator, double delta, float ydelta);
void reset_callback (const ARDOUR::AutomationList&);
void list_changed (ARDOUR::Change);
#ifdef STATE_MANAGER
UndoAction get_memento();
#endif
virtual bool event_handler (GdkEvent*);
private:
uint32_t drags;
double first_drag_fraction;
double last_drag_fraction;
uint32_t line_drag_cp1;
uint32_t line_drag_cp2;
void modify_view_point(ControlPoint&, double, double, bool with_push);
void reset_line_coords (ControlPoint&);
void update_line ();
struct ModelRepresentation {
ARDOUR::AutomationList::iterator start;
ARDOUR::AutomationList::iterator end;
nframes_t xpos;
double ypos;
nframes_t xmin;
double ymin;
nframes_t xmax;
double ymax;
nframes_t xval;
double yval;
};
void model_representation (ControlPoint&, ModelRepresentation&);
friend class AudioRegionGainLine;
};
#endif /* __ardour_automation_line_h__ */
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