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livetrax/libs/surfaces/push2/level_meter.h

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/*
* Copyright (C) 2016 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2019 Robin Gareus <robin@gareus.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ardour_push2_level_meter_h__
#define __ardour_push2_level_meter_h__
#include "canvas/container.h"
#include "canvas/meter.h"
namespace ARDOUR {
class PeakMeter;
}
namespace ArdourCanvas {
class Box;
}
namespace ArdourSurface
{
class Push2;
class LevelMeter : public ArdourCanvas::Container, public sigc::trackable
{
public:
LevelMeter (Push2& p2, Item* parent, int len, ArdourCanvas::Meter::Orientation o = ArdourCanvas::Meter::Vertical);
virtual ~LevelMeter ();
virtual void set_meter (ARDOUR::PeakMeter* meter);
void update_gain_sensitive ();
float update_meters ();
void update_meters_falloff ();
void clear_meters (bool reset_highlight = true);
void hide_meters ();
void setup_meters (int len=0, int width=3, int thin=2);
void set_max_audio_meter_count (uint32_t cnt = 0);
private:
Push2& _p2;
ARDOUR::PeakMeter* _meter;
ArdourCanvas::Meter::Orientation _meter_orientation;
ArdourCanvas::Box* _meter_packer;
struct MeterInfo {
ArdourCanvas::Meter* meter;
gint16 width;
int length;
bool packed;
float max_peak;
MeterInfo() {
meter = 0;
width = 0;
length = 0;
packed = false;
max_peak = -INFINITY;
}
};
guint16 _regular_meter_width;
int _meter_length;
guint16 _thin_meter_width;
std::vector<MeterInfo> _meters;
float _max_peak;
ARDOUR::MeterType _visible_meter_type;
uint32_t _midi_count;
uint32_t _meter_count;
uint32_t _max_visible_meters;
PBD::ScopedConnection _configuration_connection;
PBD::ScopedConnection _meter_type_connection;
PBD::ScopedConnection _parameter_connection;
void hide_all_meters ();
void parameter_changed (std::string);
void configuration_changed (ARDOUR::ChanCount in, ARDOUR::ChanCount out);
void meter_type_changed (ARDOUR::MeterType);
};
}
#endif /* __ardour_push2_level_meter_h__ */