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livetrax/gtk2_ardour/editor_summary.h

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/*
Copyright (C) 2009 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 __gtk_ardour_editor_summary_h__
#define __gtk_ardour_editor_summary_h__
#include "gtkmm2ext/cairo_widget.h"
#include "editor_component.h"
namespace ARDOUR {
class Session;
}
class Editor;
/** Class to provide a visual summary of the contents of an editor window; represents
* the whole session as a set of lines, one per region view.
*/
class EditorSummary : public CairoWidget, public EditorComponent, public ARDOUR::SessionHandlePtr, public PBD::ScopedConnectionList
{
public:
EditorSummary (Editor *);
~EditorSummary ();
void set_session (ARDOUR::Session *);
void set_overlays_dirty ();
void set_background_dirty ();
void routes_added (std::list<RouteTimeAxisView*> const &);
private:
void parameter_changed (std::string);
void on_size_allocate (Gtk::Allocation& alloc);
enum Position {
LEFT,
RIGHT,
BOTTOM,
INSIDE,
TO_LEFT_OR_RIGHT
};
void on_size_request (Gtk::Requisition *);
bool on_button_press_event (GdkEventButton *);
bool on_button_release_event (GdkEventButton *);
bool on_motion_notify_event (GdkEventMotion *);
bool on_scroll_event (GdkEventScroll *);
bool on_key_press_event (GdkEventKey*);
bool on_key_release_event (GdkEventKey*);
bool on_enter_notify_event (GdkEventCrossing*);
bool on_leave_notify_event (GdkEventCrossing*);
void reset_to_extents ();
void centre_on_click (GdkEventButton *);
void render (Cairo::RefPtr<Cairo::Context> const&, cairo_rectangle_t*);
void render_region (RegionView*, cairo_t*, double) const;
void get_editor (std::pair<double, double>* x, std::pair<double, double>* y = NULL) const;
void set_editor (double);
void set_editor (std::pair<double, double>);
void set_editor_x (double);
void set_editor_x (std::pair<double, double>);
void playhead_position_changed (samplepos_t);
double editor_y_to_summary (double) const;
Position get_position (double, double) const;
void set_cursor (Position);
void route_gui_changed (PBD::PropertyChange const&);
bool suspending_editor_updates () const;
double playhead_sample_to_position (samplepos_t) const;
samplepos_t position_to_playhead_sample_to_position (double pos) const;
void set_overlays_dirty_rect (int, int, int, int);
void summary_zoom_step ( int steps );
samplepos_t _start; ///< start sample of the overview
samplepos_t _end; ///< end sample of the overview
samplepos_t _leftmost; ///< the earliest sample we ever viewed
samplepos_t _rightmost; ///< the latest sample we ever viewed
double _x_scale; ///< pixels per sample for the x axis of the pixmap
double _track_height;
double _last_playhead;
std::pair<double, double> _start_editor_x;
double _start_mouse_x;
double _start_mouse_y;
Position _start_position;
bool _move_dragging;
//used for zooming
int _last_mx;
int _last_my;
int _last_dx;
int _last_dy;
int _last_y_delta;
std::pair<double, double> _view_rectangle_x;
std::pair<double, double> _view_rectangle_y;
std::pair<double, double> _pending_editor_x;
std::pair<double, double> _pending_editor_y;
bool _pending_editor_changed;
bool _zoom_trim_dragging;
Position _zoom_trim_position;
bool _old_follow_playhead;
cairo_surface_t* _image;
void render_background_image ();
bool _background_dirty;
PBD::ScopedConnectionList position_connection;
PBD::ScopedConnection route_ctrl_id_connection;
PBD::ScopedConnectionList region_property_connection;
};
#endif