13
0
livetrax/gtk2_ardour/gain_meter.cc
Paul Davis 99e92a1172 reconstruct and use global state commands (mute/solo/rec-enable/meter point)
git-svn-id: svn://localhost/ardour2/trunk@1235 d708f5d6-7413-0410-9779-e7cbd77b26cf
2006-12-20 17:26:07 +00:00

918 lines
22 KiB
C++

/*
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.
$Id$
*/
#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 "gain_meter.h"
#include "utils.h"
#include "logmeter.h"
#include "gui_thread.h"
#include "keyboard.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> GainMeter::ResetAllPeakDisplays;
sigc::signal<void,RouteGroup*> GainMeter::ResetGroupPeakDisplays;
Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
Glib::RefPtr<Gdk::Pixbuf> GainMeter::rail;
map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
int
GainMeter::setup_slider_pix ()
{
slider = ::get_icon ("fader_belt");
return 0;
}
GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
: _io (io),
_session (s),
gain_slider (0),
// 0.781787 is the value needed for gain to be set to 0.
gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
gain_automation_style_button (""),
gain_automation_state_button ("")
{
if (slider == 0) {
setup_slider_pix ();
}
ignore_toggle = false;
meter_menu = 0;
next_release_selects = false;
gain_slider = manage (new VSliderController (slider,
&gain_adjustment,
_io->gain_control(),
false));
gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
gain_slider->set_name ("GainFader");
gain_display.set_name ("MixerStripGainDisplay");
gain_display.set_has_frame (false);
set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
gain_display_box.set_homogeneous (true);
gain_display_box.set_spacing (2);
gain_display_box.pack_start (gain_display, true, true);
peak_display.set_name ("MixerStripPeakDisplay");
peak_display.set_has_frame (false);
peak_display.set_editable (false);
set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
max_peak = minus_infinity();
peak_display.set_text (_("-inf"));
peak_display.unset_flags (Gtk::CAN_FOCUS);
meter_metric_area.set_name ("MeterMetricsStrip");
set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
meter_packer.set_spacing (2);
gain_automation_style_button.set_name ("MixerAutomationModeButton");
gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
gain_automation_state_button.set_size_request(15, 15);
gain_automation_style_button.set_size_request(15, 15);
HBox* fader_centering_box = manage (new HBox);
fader_centering_box->pack_start (*gain_slider, true, false);
fader_vbox = manage (new Gtk::VBox());
fader_vbox->set_spacing (0);
fader_vbox->pack_start (*fader_centering_box, false, false, 0);
hbox.set_spacing (2);
hbox.pack_start (*fader_vbox, true, true);
set_width(Narrow);
Route* r;
if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
/*
if we have a route (ie. we're not the click),
pack some route-dependent stuff.
*/
gain_display_box.pack_end (peak_display, true, true);
hbox.pack_end (meter_packer, true, true);
using namespace Menu_Helpers;
gain_astate_menu.items().push_back (MenuElem (_("Off"),
bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Off)));
gain_astate_menu.items().push_back (MenuElem (_("Play"),
bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Play)));
gain_astate_menu.items().push_back (MenuElem (_("Write"),
bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Write)));
gain_astate_menu.items().push_back (MenuElem (_("Touch"),
bind (mem_fun (*_io, &IO::set_gain_automation_state), (AutoState) Touch)));
gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
gain_astate_menu.set_name ("ArdourContextMenu");
gain_astyle_menu.set_name ("ArdourContextMenu");
gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_style_button_event), false);
gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeter::gain_automation_state_button_event), false);
r->gain_automation_curve().automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed));
r->gain_automation_curve().automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed));
fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
gain_automation_state_changed ();
}
set_spacing (2);
pack_start (gain_display_box, Gtk::PACK_SHRINK);
pack_start (hbox, Gtk::PACK_SHRINK);
_io->gain_changed.connect (mem_fun(*this, &GainMeter::gain_changed));
meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeter::gain_adjusted));
peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeter::peak_button_release), false);
gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeter::gain_key_press), false);
Config->ParameterChanged.connect (mem_fun (*this, &GainMeter::parameter_changed));
gain_changed (0);
show_gain ();
update_gain_sensitive ();
ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_peak_display));
ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
}
void
GainMeter::set_width (Width w)
{
switch (w) {
case Wide:
peak_display.show();
break;
case Narrow:
peak_display.hide();
break;
}
_width = w;
setup_meters ();
}
Glib::RefPtr<Gdk::Pixmap>
GainMeter::render_metrics (Gtk::Widget& w)
{
Glib::RefPtr<Gdk::Window> win (w.get_window());
Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
gint x, y, width, height, depth;
int db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
char buf[32];
win->get_geometry (x, y, width, height, depth);
Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
metric_pixmaps[w.get_name()] = pixmap;
pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
float fraction = log_meter (db_points[i]);
gint pos = height - (gint) floor (height * fraction);
snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
layout->set_text (buf);
/* we want logical extents, not ink extents here */
int width, height;
layout->get_pixel_size (width, height);
pixmap->draw_line (fg_gc, 0, pos, 4, pos);
pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
}
return pixmap;
}
gint
GainMeter::meter_metrics_expose (GdkEventExpose *ev)
{
Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
Glib::RefPtr<Gdk::GC> fg_gc (meter_metric_area.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
GdkRectangle base_rect;
GdkRectangle draw_rect;
gint x, y, width, height, depth;
win->get_geometry (x, y, width, height, depth);
base_rect.width = width;
base_rect.height = height;
base_rect.x = 0;
base_rect.y = 0;
Glib::RefPtr<Gdk::Pixmap> pixmap;
std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
if (i == metric_pixmaps.end()) {
pixmap = render_metrics (meter_metric_area);
} else {
pixmap = i->second;
}
gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
win->draw_rectangle (bg_gc, true, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
return true;
}
GainMeter::~GainMeter ()
{
if (meter_menu) {
delete meter_menu;
}
for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); i++) {
if ((*i).meter) {
delete (*i).meter;
}
}
}
void
GainMeter::update_meters ()
{
vector<MeterInfo>::iterator i;
uint32_t n;
float peak;
char buf[32];
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), peak);
if (peak > max_peak) {
max_peak = peak;
/* set peak display */
if (max_peak <= -200.0f) {
peak_display.set_text (_("-inf"));
} else {
snprintf (buf, sizeof(buf), "%.1f", max_peak);
peak_display.set_text (buf);
}
if (max_peak >= 0.0f) {
peak_display.set_name ("MixerStripPeakDisplayPeak");
}
}
}
}
}
void
GainMeter::parameter_changed(const char* parameter_name)
{
#define PARAM_IS(x) (!strcmp (parameter_name, (x)))
ENSURE_GUI_THREAD (bind (mem_fun(*this, &GainMeter::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
GainMeter::hide_all_meters ()
{
bool remove_metric_area = false;
for (vector<MeterInfo>::iterator i = meters.begin(); i != meters.end(); ++i) {
if ((*i).packed) {
remove_metric_area = true;
meter_packer.remove (*((*i).meter));
(*i).packed = false;
}
}
if (remove_metric_area) {
if (meter_metric_area.get_parent()) {
meter_packer.remove (meter_metric_area);
}
}
}
void
GainMeter::setup_meters ()
{
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());
}
/* pack them backwards */
if (_width == Wide) {
meter_packer.pack_end (meter_metric_area, false, false);
meter_metric_area.show_all ();
}
for (int32_t n = nmeters-1; nmeters && n >= 0 ; --n) {
if (meters[n].width != width) {
delete meters[n].meter;
meters[n].meter = new FastMeter ((uint32_t) floor (Config->get_meter_hold()), width, FastMeter::Vertical);
meters[n].width = width;
meters[n].meter->add_events (Gdk::BUTTON_RELEASE_MASK);
meters[n].meter->signal_button_release_event().connect (bind (mem_fun(*this, &GainMeter::meter_button_release), n));
}
meter_packer.pack_end (*meters[n].meter, false, false);
meters[n].meter->show_all ();
meters[n].packed = true;
}
}
bool
GainMeter::gain_key_press (GdkEventKey* ev)
{
if (key_is_legal_for_numeric_entry (ev->keyval)) {
/* drop through to normal handling */
return false;
}
/* illegal key for gain entry */
return true;
}
bool
GainMeter::peak_button_release (GdkEventButton* ev)
{
/* reset peak label */
if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control|Keyboard::Shift)) {
ResetAllPeakDisplays ();
} else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
Route* r;
if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
ResetGroupPeakDisplays (r->mix_group());
}
} else {
reset_peak_display ();
}
return true;
}
void
GainMeter::reset_peak_display ()
{
max_peak = minus_infinity();
peak_display.set_text (_("-Inf"));
peak_display.set_name ("MixerStripPeakDisplay");
}
void
GainMeter::reset_group_peak_display (RouteGroup* group)
{
Route* r;
if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
if (group == r->mix_group()) {
reset_peak_display ();
}
}
}
gint
GainMeter::meter_button_release (GdkEventButton* ev, uint32_t which)
{
switch (ev->button) {
case 1:
meters[which].meter->clear();
max_peak = minus_infinity();
peak_display.set_text (_("-inf"));
peak_display.set_name ("MixerStripPeakDisplay");
break;
case 3:
// popup_meter_menu (ev);
break;
};
return TRUE;
}
void
GainMeter::popup_meter_menu (GdkEventButton *ev)
{
using namespace Menu_Helpers;
if (meter_menu == 0) {
meter_menu = new Gtk::Menu;
MenuList& items = meter_menu->items();
items.push_back (MenuElem ("-inf .. +0dBFS"));
items.push_back (MenuElem ("-10dB .. +0dBFS"));
items.push_back (MenuElem ("-4 .. +0dBFS"));
items.push_back (SeparatorElem());
items.push_back (MenuElem ("-inf .. -2dBFS"));
items.push_back (MenuElem ("-10dB .. -2dBFS"));
items.push_back (MenuElem ("-4 .. -2dBFS"));
}
meter_menu->popup (1, ev->time);
}
bool
GainMeter::gain_focused (GdkEventFocus* ev)
{
if (ev->in) {
gain_display.select_region (0, -1);
} else {
gain_display.select_region (0, 0);
}
return false;
}
void
GainMeter::gain_activated ()
{
float f;
if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
/* clamp to displayable values */
f = min (f, 6.0f);
_io->set_gain (dB_to_coefficient (f), this);
}
}
void
GainMeter::show_gain ()
{
char buf[32];
float v = gain_adjustment.get_value();
if (v == 0.0) {
strcpy (buf, _("-inf"));
} else {
snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
}
gain_display.set_text (buf);
}
void
GainMeter::gain_adjusted ()
{
if (!ignore_toggle) {
_io->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
}
show_gain ();
}
void
GainMeter::effective_gain_display ()
{
gfloat value = gain_to_slider_position (_io->effective_gain());
if (gain_adjustment.get_value() != value) {
ignore_toggle = true;
gain_adjustment.set_value (value);
ignore_toggle = false;
}
}
void
GainMeter::gain_changed (void *src)
{
Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeter::effective_gain_display));
}
void
GainMeter::set_meter_strip_name (const char * name)
{
meter_metric_area.set_name (name);
}
void
GainMeter::set_fader_name (const char * name)
{
gain_slider->set_name (name);
}
void
GainMeter::update_gain_sensitive ()
{
static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (!(_io->gain_automation_state() & Play));
}
static MeterPoint
next_meter_point (MeterPoint mp)
{
switch (mp) {
case MeterInput:
return MeterPreFader;
break;
case MeterPreFader:
return MeterPostFader;
break;
case MeterPostFader:
return MeterInput;
break;
}
/*NOTREACHED*/
return MeterInput;
}
gint
GainMeter::meter_press(GdkEventButton* ev)
{
Route* _route;
wait_for_release = false;
if ((_route = dynamic_cast<Route*>(_io.get())) == 0) {
return FALSE;
}
if (!ignore_toggle) {
if (Keyboard::is_context_menu_event (ev)) {
// no menu at this time.
} else {
if (ev->button == 2) {
// ctrl-button2 click is the midi binding click
// button2-click is "momentary"
if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control))) {
wait_for_release = true;
old_meter_point = _route->meter_point ();
}
}
if (ev->button == 1 || ev->button == 2) {
if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::Control|Keyboard::Shift))) {
/* ctrl-shift-click applies change to all routes */
_session.begin_reversible_command (_("meter point change"));
Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
_session.foreach_route (this, &GainMeter::set_meter_point, next_meter_point (_route->meter_point()));
cmd->mark();
_session.add_command (cmd);
_session.commit_reversible_command ();
} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::Control)) {
/* ctrl-click: solo mix group.
ctrl-button2 is MIDI learn.
*/
if (ev->button == 1) {
_session.begin_reversible_command (_("meter point change"));
Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
cmd->mark();
_session.add_command (cmd);
_session.commit_reversible_command ();
}
} else {
/* click: change just this route */
// XXX no undo yet
_route->set_meter_point (next_meter_point (_route->meter_point()), this);
}
}
}
}
return true;
}
gint
GainMeter::meter_release(GdkEventButton* ev)
{
if(!ignore_toggle){
if (wait_for_release){
wait_for_release = false;
set_meter_point (*(dynamic_cast<Route*>(_io.get())), old_meter_point);
}
}
return true;
}
void
GainMeter::set_meter_point (Route& route, MeterPoint mp)
{
route.set_meter_point (mp, this);
}
void
GainMeter::set_mix_group_meter_point (Route& route, MeterPoint mp)
{
RouteGroup* mix_group;
if((mix_group = route.mix_group()) != 0){
mix_group->apply (&Route::set_meter_point, mp, this);
} else {
route.set_meter_point (mp, this);
}
}
void
GainMeter::meter_point_clicked ()
{
Route* r;
if ((r = dynamic_cast<Route*> (_io.get())) != 0) {
}
}
gint
GainMeter::start_gain_touch (GdkEventButton* ev)
{
_io->start_gain_touch ();
return FALSE;
}
gint
GainMeter::end_gain_touch (GdkEventButton* ev)
{
_io->end_gain_touch ();
return FALSE;
}
gint
GainMeter::gain_automation_state_button_event (GdkEventButton *ev)
{
if (ev->type == GDK_BUTTON_RELEASE) {
return TRUE;
}
switch (ev->button) {
case 1:
gain_astate_menu.popup (1, ev->time);
break;
default:
break;
}
return TRUE;
}
gint
GainMeter::gain_automation_style_button_event (GdkEventButton *ev)
{
if (ev->type == GDK_BUTTON_RELEASE) {
return TRUE;
}
switch (ev->button) {
case 1:
gain_astyle_menu.popup (1, ev->time);
break;
default:
break;
}
return TRUE;
}
string
GainMeter::astate_string (AutoState state)
{
return _astate_string (state, false);
}
string
GainMeter::short_astate_string (AutoState state)
{
return _astate_string (state, true);
}
string
GainMeter::_astate_string (AutoState state, bool shrt)
{
string sstr;
switch (state) {
case Off:
sstr = (shrt ? "O" : _("O"));
break;
case Play:
sstr = (shrt ? "P" : _("P"));
break;
case Touch:
sstr = (shrt ? "T" : _("T"));
break;
case Write:
sstr = (shrt ? "W" : _("W"));
break;
}
return sstr;
}
string
GainMeter::astyle_string (AutoStyle style)
{
return _astyle_string (style, false);
}
string
GainMeter::short_astyle_string (AutoStyle style)
{
return _astyle_string (style, true);
}
string
GainMeter::_astyle_string (AutoStyle style, bool shrt)
{
if (style & Trim) {
return _("Trim");
} else {
/* XXX it might different in different languages */
return (shrt ? _("Abs") : _("Abs"));
}
}
void
GainMeter::gain_automation_style_changed ()
{
// Route* _route = dynamic_cast<Route*>(&_io);
switch (_width) {
case Wide:
gain_automation_style_button.set_label (astyle_string(_io->gain_automation_curve().automation_style()));
break;
case Narrow:
gain_automation_style_button.set_label (short_astyle_string(_io->gain_automation_curve().automation_style()));
break;
}
}
void
GainMeter::gain_automation_state_changed ()
{
ENSURE_GUI_THREAD(mem_fun(*this, &GainMeter::gain_automation_state_changed));
//Route* _route = dynamic_cast<Route*>(&_io);
bool x;
switch (_width) {
case Wide:
gain_automation_state_button.set_label (astate_string(_io->gain_automation_curve().automation_state()));
break;
case Narrow:
gain_automation_state_button.set_label (short_astate_string(_io->gain_automation_curve().automation_state()));
break;
}
x = (_io->gain_automation_state() != Off);
if (gain_automation_state_button.get_active() != x) {
ignore_toggle = true;
gain_automation_state_button.set_active (x);
ignore_toggle = false;
}
update_gain_sensitive ();
/* start watching automation so that things move */
gain_watching.disconnect();
if (x) {
gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeter::effective_gain_display));
}
}