Create new LevelMeter class for meter only widgets. This and some better packing options to the tracks make the meters look better

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@2703 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 203 insertions, 0 deletions

diff --git a/gtk2_ardour/level_meter.cc b/gtk2_ardour/level_meter.cc
new file mode 100644
index 0000000000..dfbe0f6a3b
--- /dev/null
+++ b/gtk2_ardour/level_meter.cc
@@ -0,0 +1,203 @@
+/*
+  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.
+
+*/
+
+#include <limits.h>
+
+#include <ardour/io.h>
+#include <ardour/route.h>
+#include <ardour/route_group.h>
+#include <ardour/session.h>
+#include <ardour/session_route.h>
+#include <ardour/dB.h>
+
+#include <gtkmm2ext/utils.h>
+#include <gtkmm2ext/fastmeter.h>
+#include <gtkmm2ext/stop_signal.h>
+#include <gtkmm2ext/barcontroller.h>
+#include <midi++/manager.h>
+#include <pbd/fastlog.h>
+
+#include "ardour_ui.h"
+#include "level_meter.h"
+#include "utils.h"
+#include "logmeter.h"
+#include "gui_thread.h"
+#include "keyboard.h"
+#include "public_editor.h"
+
+#include <ardour/session.h>
+#include <ardour/route.h>
+
+#include "i18n.h"
+
+using namespace ARDOUR;
+using namespace PBD;
+using namespace Gtkmm2ext;
+using namespace Gtk;
+using namespace sigc;
+using namespace std;
+
+//sigc::signal<void> LevelMeter::ResetAllPeakDisplays;
+//sigc::signal<void,RouteGroup*> LevelMeter::ResetGroupPeakDisplays;
+
+
+LevelMeter::LevelMeter (boost::shared_ptr<IO> io, Session& s)
+	: _io (io),
+	  _session (s)
+	
+{
+	set_spacing (1);
+	Config->ParameterChanged.connect (mem_fun (*this, &LevelMeter::parameter_changed));
+	UI::instance()->theme_changed.connect (mem_fun(*this, &LevelMeter::on_theme_changed));
+}
+
+void
+LevelMeter::on_theme_changed()
+{
+	style_changed = true;
+}
+
+LevelMeter::~LevelMeter ()
+{
+	for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
+		if ((*i).meter) {
+			delete (*i).meter;
+		}
+	}
+}
+
+void
+LevelMeter::update_meters ()
+{
+	vector<MeterInfo>::iterator i;
+	uint32_t n;
+	float peak, mpeak;
+	
+	for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+		if ((*i).packed) {
+			peak = _io->peak_input_power (n);
+			(*i).meter->set (log_meter (peak));
+			mpeak = _io->max_peak_power(n);
+		}
+	}
+}
+
+void
+LevelMeter::parameter_changed(const char* parameter_name)
+{
+#define PARAM_IS(x) (!strcmp (parameter_name, (x)))
+
+	ENSURE_GUI_THREAD (bind (mem_fun(*this, &LevelMeter::parameter_changed), parameter_name));
+
+	if (PARAM_IS ("meter-hold")) {
+	
+		vector<MeterInfo>::iterator i;
+		uint32_t n;
+		
+		for (n = 0, i = meters.begin(); i != meters.end(); ++i, ++n) {
+			
+			(*i).meter->set_hold_count ((uint32_t) floor(Config->get_meter_hold()));
+		}
+	}
+
+#undef PARAM_IS
+}
+
+void
+LevelMeter::hide_all_meters ()
+{
+
+	for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
+		if ((*i).packed) {
+			remove (*((*i).meter));
+			(*i).packed = false;
+		}
+	}
+}
+
+void
+LevelMeter::setup_meters (int len)
+{
+	uint32_t nmeters = _io->n_outputs();
+	guint16 width;
+
+	hide_all_meters ();
+
+	Route* r;
+
+	if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
+
+		switch (r->meter_point()) {
+		case MeterPreFader:
+		case MeterInput:
+			nmeters = r->n_inputs();
+			break;
+		case MeterPostFader:
+			nmeters = r->n_outputs();
+			break;
+		}
+
+	} else {
+
+		nmeters = _io->n_outputs();
+
+	}
+
+	if (nmeters == 0) {
+		return;
+	}
+
+	if (nmeters <= 2) {
+		width = regular_meter_width;
+	} else {
+		width = thin_meter_width;
+	}
+
+	while (meters.size() < nmeters) {
+		meters.push_back (MeterInfo());
+	}
+
+	for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
+		if (meters[n].width != width || meters[n].length != len) {
+			delete meters[n].meter;
+			meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical, len);
+			//cerr << "LevelMeter::setup_meters() w:l = " << width << ":" << len << endl;//DEBUG
+			meters[n].width = width;
+			meters[n].length = len;
+			meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
+		}
+
+		pack_start (*meters[n].meter, false, false);
+		meters[n].meter->show_all ();
+		meters[n].packed = true;
+	}
+	show();
+}	
+
+void LevelMeter::clear_meters ()
+{
+	for (vector<MeterInfo>::iterator i = meters.begin(); i < meters.end(); i++) {
+		(*i).meter->clear();
+	}
+}
+
+void LevelMeter::hide_meters ()
+{
+	hide_all_meters();
+}