livetrax/gtk2_ardour/plugin_display.h

/*
    Copyright (C) 2017 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_plugin_display__
#define __ardour_plugin_display__

#include <gtkmm/drawingarea.h>

#include "ardour/plugin.h"

class PluginDisplay : public Gtk::DrawingArea
{
public:
	PluginDisplay(boost::shared_ptr<ARDOUR::Plugin>, uint32_t max_height = 80);
	virtual ~PluginDisplay();

protected:
	bool on_expose_event (GdkEventExpose *);
	void on_size_request (Gtk::Requisition* req);
	bool on_button_press_event (GdkEventButton *ev);
	bool on_button_release_event (GdkEventButton *ev);

	void plugin_going_away () {
		_qdraw_connection.disconnect ();
	}

	void update_height_alloc (uint32_t inline_height);
	virtual uint32_t render_inline (cairo_t *, uint32_t width);

	virtual void display_frame (cairo_t* cr, double w, double h);

	boost::shared_ptr<ARDOUR::Plugin> _plug;
	PBD::ScopedConnection _qdraw_connection;
	PBD::ScopedConnection _death_connection;
	cairo_surface_t* _surf;
	uint32_t _max_height;
	uint32_t _cur_height;
	bool _scroll;
};

#endif