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ardour/gtk2_ardour/gain_meter.cc

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/*
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/amp.h"
#include "ardour/route_group.h"
#include "ardour/session_route.h"
#include "ardour/dB.h"
#include "ardour/utils.h"
#include <gtkmm/style.h>
#include <gdkmm/color.h>
#include <gtkmm2ext/utils.h>
#include <gtkmm2ext/fastmeter.h>
#include <gtkmm2ext/barcontroller.h>
#include <gtkmm2ext/gtk_ui.h>
#include "midi++/manager.h"
#include "pbd/fastlog.h"
#include "pbd/stacktrace.h"
#include "ardour_ui.h"
#include "gain_meter.h"
#include "global_signals.h"
#include "logmeter.h"
#include "gui_thread.h"
#include "keyboard.h"
#include "public_editor.h"
#include "utils.h"
#include "ardour/session.h"
#include "ardour/route.h"
#include "ardour/meter.h"
#include "i18n.h"
using namespace ARDOUR;
using namespace PBD;
using namespace Gtkmm2ext;
using namespace Gtk;
using namespace std;
using Gtkmm2ext::Keyboard;
sigc::signal<void> GainMeterBase::ResetAllPeakDisplays;
sigc::signal<void,RouteGroup*> GainMeterBase::ResetGroupPeakDisplays;
GainMeter::MetricPatterns GainMeter::metric_patterns;
GainMeterBase::GainMeterBase (Session* s, bool horizontal, int fader_length, int fader_girth)
: gain_adjustment (gain_to_slider_position_with_max (1.0, Config->get_max_gain()), 0.0, 1.0, 0.01, 0.1)
, gain_automation_style_button ("")
, gain_automation_state_button ("")
, style_changed (false)
, dpi_changed (false)
, _data_type (DataType::AUDIO)
{
using namespace Menu_Helpers;
set_session (s);
ignore_toggle = false;
meter_menu = 0;
next_release_selects = false;
_width = Wide;
if (horizontal) {
gain_slider = manage (new HSliderController (&gain_adjustment, fader_length, fader_girth, false));
} else {
gain_slider = manage (new VSliderController (&gain_adjustment, fader_length, fader_girth, false));
}
level_meter = new LevelMeter(_session);
level_meter->ButtonPress.connect_same_thread (_level_meter_connection, boost::bind (&GainMeterBase::level_meter_button_press, this, _1));
meter_metric_area.signal_button_press_event().connect (sigc::mem_fun (*this, &GainMeterBase::level_meter_button_press));
meter_metric_area.add_events (Gdk::BUTTON_PRESS_MASK);
gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_press), false);
gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release), false);
gain_slider->set_name ("GainFader");
gain_display.set_name ("MixerStripGainDisplay");
set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
peak_display.set_name ("MixerStripPeakDisplay");
set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
max_peak = minus_infinity();
peak_display.set_label (_("-inf"));
peak_display.unset_flags (Gtk::CAN_FOCUS);
gain_automation_style_button.set_name ("mixer strip button");
gain_automation_state_button.set_name ("mixer strip button");
ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
ARDOUR_UI::instance()->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);
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_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
// PBD::ScopedConnection _config_connection;
// Config->ParameterChanged.connect ( _config_connection, MISSING_INVALIDATOR, boost::bind(&GainMeterBase::set_flat_buttons, this, _1), gui_context() );
}
void
GainMeterBase::set_flat_buttons ()
{
printf("set_flat_butt\n");
// gain_slider->set_flat_buttons( ARDOUR_UI::config()->flat_buttons.get() );
}
GainMeterBase::~GainMeterBase ()
{
delete meter_menu;
delete level_meter;
}
void
GainMeterBase::set_controls (boost::shared_ptr<Route> r,
boost::shared_ptr<PeakMeter> pm,
boost::shared_ptr<Amp> amp)
{
connections.clear ();
model_connections.drop_connections ();
if (!pm && !amp) {
level_meter->set_meter (0);
gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
_meter.reset ();
_amp.reset ();
_route.reset ();
return;
}
_meter = pm;
_amp = amp;
_route = r;
level_meter->set_meter (pm.get());
gain_slider->set_controllable (amp->gain_control());
if (amp) {
amp->ConfigurationChanged.connect (
model_connections, invalidator (*this), boost::bind (&GainMeterBase::setup_gain_adjustment, this), gui_context ()
);
}
setup_gain_adjustment ();
if (!_route || !_route->is_auditioner()) {
using namespace Menu_Helpers;
gain_astate_menu.items().clear ();
gain_astate_menu.items().push_back (MenuElem (S_("Automation|Manual"),
sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
Evoral::Parameter(GainAutomation), (AutoState) ARDOUR::Off)));
gain_astate_menu.items().push_back (MenuElem (_("Play"),
sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
Evoral::Parameter(GainAutomation), (AutoState) Play)));
gain_astate_menu.items().push_back (MenuElem (_("Write"),
sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
Evoral::Parameter(GainAutomation), (AutoState) Write)));
gain_astate_menu.items().push_back (MenuElem (_("Touch"),
sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
Evoral::Parameter(GainAutomation), (AutoState) Touch)));
connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
boost::shared_ptr<AutomationControl> gc = amp->gain_control();
gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
gain_automation_state_changed ();
}
amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
gain_changed ();
show_gain ();
update_gain_sensitive ();
}
void
GainMeterBase::setup_gain_adjustment ()
{
if (!_amp) {
return;
}
if (_previous_amp_output_streams == _amp->output_streams ()) {
return;
}
ignore_toggle = true;
if (_amp->output_streams().n_midi() == 0) {
_data_type = DataType::AUDIO;
gain_adjustment.set_lower (0.0);
gain_adjustment.set_upper (1.0);
gain_adjustment.set_step_increment (0.01);
gain_adjustment.set_page_increment (0.1);
gain_slider->set_default_value (gain_to_slider_position (1));
} else {
_data_type = DataType::MIDI;
gain_adjustment.set_lower (0.0);
gain_adjustment.set_upper (2.0);
gain_adjustment.set_step_increment (1.0/128.0);
gain_adjustment.set_page_increment (10.0/128.0);
gain_slider->set_default_value (1.0);
}
ignore_toggle = false;
effective_gain_display ();
_previous_amp_output_streams = _amp->output_streams ();
}
void
GainMeterBase::hide_all_meters ()
{
level_meter->hide_meters();
}
void
GainMeter::hide_all_meters ()
{
bool remove_metric_area = false;
GainMeterBase::hide_all_meters ();
if (remove_metric_area) {
if (meter_metric_area.get_parent()) {
level_meter->remove (meter_metric_area);
}
}
}
void
GainMeterBase::setup_meters (int len)
{
level_meter->setup_meters(len, 5);
}
void
GainMeter::setup_meters (int len)
{
if (!meter_metric_area.get_parent()) {
level_meter->pack_end (meter_metric_area, false, false);
meter_metric_area.show_all ();
}
GainMeterBase::setup_meters (len);
}
bool
GainMeterBase::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
GainMeterBase::peak_button_release (GdkEventButton* ev)
{
/* reset peak label */
if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
ResetAllPeakDisplays ();
} else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
if (_route) {
ResetGroupPeakDisplays (_route->route_group());
}
} else {
reset_peak_display ();
}
return true;
}
void
GainMeterBase::reset_peak_display ()
{
_meter->reset_max();
level_meter->clear_meters();
max_peak = -INFINITY;
peak_display.set_label (_("-Inf"));
peak_display.set_name ("MixerStripPeakDisplay");
}
void
GainMeterBase::reset_group_peak_display (RouteGroup* group)
{
if (_route && group == _route->route_group()) {
reset_peak_display ();
}
}
void
GainMeterBase::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
GainMeterBase::gain_focused (GdkEventFocus* ev)
{
if (ev->in) {
gain_display.select_region (0, -1);
} else {
gain_display.select_region (0, 0);
}
return false;
}
void
GainMeterBase::gain_activated ()
{
float f;
{
// Switch to user's preferred locale so that
// if they use different LC_NUMERIC conventions,
// we will honor them.
PBD::LocaleGuard lg ("");
if (sscanf (gain_display.get_text().c_str(), "%f", &f) != 1) {
return;
}
}
/* clamp to displayable values */
if (_data_type == DataType::AUDIO) {
f = min (f, 6.0f);
_amp->set_gain (dB_to_coefficient(f), this);
} else {
f = min (fabs (f), 2.0f);
_amp->set_gain (f, this);
}
if (gain_display.has_focus()) {
Gtk::Widget* w = gain_display.get_toplevel();
if (w) {
Gtk::Window* win = dynamic_cast<Gtk::Window*> (w);
/* sigh. gtkmm doesn't wrap get_default_widget() */
if (win) {
GtkWidget* f = gtk_window_get_default_widget (win->gobj());
if (f) {
gtk_widget_grab_focus (f);
return;
}
}
}
}
}
void
GainMeterBase::show_gain ()
{
char buf[32];
float v = gain_adjustment.get_value();
switch (_data_type) {
case DataType::AUDIO:
if (v == 0.0) {
strcpy (buf, _("-inf"));
} else {
snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
}
break;
case DataType::MIDI:
snprintf (buf, sizeof (buf), "%.1f", v);
break;
}
gain_display.set_text (buf);
}
void
GainMeterBase::gain_adjusted ()
{
gain_t value;
/* convert from adjustment range (0..1) to gain coefficient */
if (_data_type == DataType::AUDIO) {
value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
} else {
value = gain_adjustment.get_value();
}
if (!ignore_toggle) {
if (_route && _route->amp() == _amp) {
_route->set_gain (value, this);
} else {
_amp->set_gain (value, this);
}
}
show_gain ();
}
void
GainMeterBase::effective_gain_display ()
{
float value = 0.0;
switch (_data_type) {
case DataType::AUDIO:
value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
break;
case DataType::MIDI:
value = _amp->gain ();
break;
}
if (gain_adjustment.get_value() != value) {
ignore_toggle = true;
gain_adjustment.set_value (value);
ignore_toggle = false;
}
}
void
GainMeterBase::gain_changed ()
{
Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
}
void
GainMeterBase::set_meter_strip_name (const char * name)
{
meter_metric_area.set_name (name);
}
void
GainMeterBase::set_fader_name (const char * name)
{
gain_slider->set_name (name);
}
void
GainMeterBase::update_gain_sensitive ()
{
bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
}
static MeterPoint
next_meter_point (MeterPoint mp)
{
switch (mp) {
case MeterInput:
return MeterPreFader;
break;
case MeterPreFader:
return MeterPostFader;
break;
case MeterPostFader:
return MeterOutput;
break;
case MeterOutput:
return MeterCustom;
break;
case MeterCustom:
return MeterInput;
break;
}
/*NOTREACHED*/
return MeterInput;
}
gint
GainMeterBase::meter_press(GdkEventButton* ev)
{
wait_for_release = false;
if (!_route) {
return FALSE;
}
if (!ignore_toggle) {
if (Keyboard::is_context_menu_event (ev)) {
// no menu at this time.
} else {
if (Keyboard::is_button2_event(ev)) {
// Primary-button2 click is the midi binding click
// button2-click is "momentary"
if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
wait_for_release = true;
old_meter_point = _route->meter_point ();
}
}
if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
/* Primary+Tertiary-click applies change to all routes */
_session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
} else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
/* Primary-click: solo mix group.
NOTE: Primary-button2 is MIDI learn.
*/
if (ev->button == 1) {
set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
}
} else {
/* click: change just this route */
// XXX no undo yet
_route->set_meter_point (next_meter_point (_route->meter_point()));
}
}
}
}
return true;
}
gint
GainMeterBase::meter_release(GdkEventButton*)
{
if (!ignore_toggle) {
if (wait_for_release) {
wait_for_release = false;
if (_route) {
set_meter_point (*_route, old_meter_point);
}
}
}
return true;
}
void
GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
{
route.set_meter_point (mp);
}
void
GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
{
RouteGroup* route_group;
if ((route_group = route.route_group ()) != 0) {
route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
} else {
route.set_meter_point (mp);
}
}
void
GainMeterBase::meter_point_clicked ()
{
if (_route) {
/* WHAT? */
}
}
bool
GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
{
switch (ev->type) {
case GDK_BUTTON_PRESS:
_amp->gain_control()->start_touch (_amp->session().transport_frame());
break;
default:
return false;
}
return false;
}
bool
GainMeterBase::gain_slider_button_release (GdkEventButton*)
{
_amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
return false;
}
gint
GainMeterBase::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
GainMeterBase::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
GainMeterBase::astate_string (AutoState state)
{
return _astate_string (state, false);
}
string
GainMeterBase::short_astate_string (AutoState state)
{
return _astate_string (state, true);
}
string
GainMeterBase::_astate_string (AutoState state, bool shrt)
{
string sstr;
switch (state) {
case ARDOUR::Off:
sstr = (shrt ? "M" : _("M"));
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
GainMeterBase::astyle_string (AutoStyle style)
{
return _astyle_string (style, false);
}
string
GainMeterBase::short_astyle_string (AutoStyle style)
{
return _astyle_string (style, true);
}
string
GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
{
if (style & Trim) {
return _("Trim");
} else {
/* XXX it might different in different languages */
return (shrt ? _("Abs") : _("Abs"));
}
}
void
GainMeterBase::gain_automation_style_changed ()
{
switch (_width) {
case Wide:
gain_automation_style_button.set_text (astyle_string(_amp->gain_control()->alist()->automation_style()));
break;
case Narrow:
gain_automation_style_button.set_text (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
break;
}
}
void
GainMeterBase::gain_automation_state_changed ()
{
ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
bool x;
switch (_width) {
case Wide:
gain_automation_state_button.set_text (astate_string(_amp->gain_control()->alist()->automation_state()));
break;
case Narrow:
gain_automation_state_button.set_text (short_astate_string(_amp->gain_control()->alist()->automation_state()));
break;
}
x = (_amp->gain_control()->alist()->automation_state() != ARDOUR::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 (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
}
}
void
GainMeterBase::update_meters()
{
char buf[32];
float mpeak = level_meter->update_meters();
if (mpeak > max_peak) {
max_peak = mpeak;
if (mpeak <= -200.0f) {
peak_display.set_label (_("-inf"));
} else {
snprintf (buf, sizeof(buf), "%.1f", mpeak);
peak_display.set_label (buf);
}
if (mpeak >= 0.0f) {
peak_display.set_name ("MixerStripPeakDisplayPeak");
}
}
}
void GainMeterBase::color_handler(bool dpi)
{
color_changed = true;
dpi_changed = (dpi) ? true : false;
setup_meters();
}
void
GainMeterBase::set_width (Width w, int len)
{
_width = w;
level_meter->setup_meters (len);
}
void
GainMeterBase::on_theme_changed()
{
style_changed = true;
}
GainMeter::GainMeter (Session* s, int fader_length)
: GainMeterBase (s, false, fader_length, 24)
, gain_display_box(true, 0)
, hbox(true, 2)
{
if (gain_display.get_parent()) {
gain_display.get_parent()->remove (gain_display);
}
gain_display_box.pack_start (gain_display, true, true);
meter_metric_area.set_name ("AudioTrackMetrics");
set_size_request_to_display_given_text (meter_metric_area, "-127", 0, 0);
gain_automation_style_button.set_name ("mixer strip button");
gain_automation_state_button.set_name ("mixer strip button");
ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
ARDOUR_UI::instance()->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);
fader_vbox = manage (new Gtk::VBox());
fader_vbox->set_spacing (0);
fader_vbox->pack_start (*gain_slider, true, true);
fader_alignment.set (0.5, 0.5, 0.0, 1.0);
fader_alignment.add (*fader_vbox);
hbox.pack_start (fader_alignment, true, true);
set_spacing (2);
pack_start (gain_display_box, Gtk::PACK_SHRINK);
pack_start (hbox, Gtk::PACK_SHRINK);
meter_alignment.set (0.5, 0.5, 0.0, 1.0);
meter_alignment.add (*level_meter);
meter_metric_area.signal_expose_event().connect (
sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
}
void
GainMeter::set_controls (boost::shared_ptr<Route> r,
boost::shared_ptr<PeakMeter> meter,
boost::shared_ptr<Amp> amp)
{
if (meter_alignment.get_parent()) {
hbox.remove (meter_alignment);
}
// if (gain_automation_state_button.get_parent()) {
// fader_vbox->remove (gain_automation_state_button);
// }
GainMeterBase::set_controls (r, meter, amp);
if (_meter) {
_meter->ConfigurationChanged.connect (
model_connections, invalidator (*this), boost::bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
);
meter_configuration_changed (_meter->input_streams ());
}
/*
if we have a non-hidden route (ie. we're not the click or the auditioner),
pack some route-dependent stuff.
*/
hbox.pack_start (meter_alignment, true, true);
// if (r && !r->is_auditioner()) {
// fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
// }
setup_meters ();
hbox.show_all ();
}
int
GainMeter::get_gm_width ()
{
Gtk::Requisition sz;
hbox.size_request (sz);
return sz.width;
}
cairo_pattern_t*
GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
{
Glib::RefPtr<Gdk::Window> win (w.get_window());
gint width, height;
win->get_size (width, height);
cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
cairo_t* cr = cairo_create (surface);
PangoLayout* layout = gtk_widget_create_pango_layout (w.gobj(), "");
cairo_move_to (cr, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
{
Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
cairo_fill (cr);
for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
Gdk::Color c;
if (types.size() > 1) {
/* we're overlaying more than 1 set of marks, so use different colours */
Gdk::Color c;
switch (*i) {
case DataType::AUDIO:
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
break;
case DataType::MIDI:
c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
break;
}
} else {
c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
}
vector<int> points;
switch (*i) {
case DataType::AUDIO:
points.push_back (-50);
points.push_back (-40);
points.push_back (-30);
points.push_back (-20);
points.push_back (-10);
points.push_back (-3);
points.push_back (0);
points.push_back (4);
break;
case DataType::MIDI:
points.push_back (0);
if (types.size() == 1) {
points.push_back (32);
} else {
/* tweak so as not to overlay the -30dB mark */
points.push_back (48);
}
points.push_back (64);
points.push_back (96);
points.push_back (127);
break;
}
char buf[32];
for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
float fraction = 0;
switch (*i) {
case DataType::AUDIO:
fraction = log_meter (*j);
break;
case DataType::MIDI:
fraction = *j / 127.0;
break;
}
gint const pos = height - (gint) floor (height * fraction);
cairo_set_line_width (cr, 1.0);
cairo_move_to (cr, 0, pos);
cairo_line_to (cr, 4, pos);
cairo_stroke (cr);
snprintf (buf, sizeof (buf), "%d", abs (*j));
pango_layout_set_text (layout, buf, strlen (buf));
/* we want logical extents, not ink extents here */
int tw, th;
pango_layout_get_pixel_size (layout, &tw, &th);
int p = pos - (th / 2);
p = min (p, height - th);
p = max (p, 0);
cairo_move_to (cr, 6, p);
pango_cairo_show_layout (cr, layout);
}
}
cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
MetricPatterns::iterator p;
if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
cairo_pattern_destroy (p->second);
}
metric_patterns[w.get_name()] = pattern;
cairo_destroy (cr);
cairo_surface_destroy (surface);
g_object_unref (layout);
return pattern;
}
gint
GainMeter::meter_metrics_expose (GdkEventExpose *ev)
{
Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
cairo_t* cr;
cr = gdk_cairo_create (win->gobj());
/* clip to expose area */
gdk_cairo_rectangle (cr, &ev->area);
cairo_clip (cr);
cairo_pattern_t* pattern;
MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
if (i == metric_patterns.end() || style_changed || dpi_changed) {
pattern = render_metrics (meter_metric_area, _types);
} else {
pattern = i->second;
}
cairo_move_to (cr, 0, 0);
cairo_set_source (cr, pattern);
gint width, height;
win->get_size (width, height);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
style_changed = false;
dpi_changed = false;
cairo_destroy (cr);
return true;
}
boost::shared_ptr<PBD::Controllable>
GainMeterBase::get_controllable()
{
if (_amp) {
return _amp->gain_control();
} else {
return boost::shared_ptr<PBD::Controllable>();
}
}
bool
GainMeterBase::level_meter_button_press (GdkEventButton* ev)
{
return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
}
void
GainMeter::meter_configuration_changed (ChanCount c)
{
_types.clear ();
for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
if (c.get (*i) > 0) {
_types.push_back (*i);
}
}
style_changed = true;
meter_metric_area.queue_draw ();
}
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