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livetrax/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/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 "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;
Large nasty commit in the form of a 5000 line patch chock-full of completely unecessary changes. (Sorry, doing a "sprint" based thing, this is the end of the first one) Achieved MIDI track and bus creation, associated Jack port and diskstream creation, and minimal GUI stuff for creating them. Should be set to start work on actually recording and playing midi to/from disk now. Relevant (significant) changes: - Creation of a Buffer class. Base class is type agnostic so things can point to a buffer but not care what kind it is (otherwise it'd be a template). Derived into AudioBuffer and MidiBuffer, with a type tag because checking type is necessary in parts of the code where dynamic_cast wouldn't be wise. Originally I considered this a hack, but passing around a type proved to be a very good solution to all the other problems (below). There is a 1:1 mapping between jack port data types and ardour Buffer types (with a conversion function), but that's easily removed if it ever becomes necessary. Having the type scoped in the Buffer class is maybe not the best spot for it, but whatever (this is proof of concept kinda stuff right now...) - IO now has a "default" port type (passed to the constructor and stored as a member), used by ensure_io (and similar) to create n ports. IO::register_***_port has a type argument that defaults to the default type if not passed. Rationale: previous IO API is identical, no changes needed to existing code, but path is paved for multiple port types in one IO, which we will need for eg synth plugin inserts, among other things. This is not quite ideal (best would be to only have the two port register functions and have them take a type), but the alternative is a lot of work (namely destroying the 'ensure' functions and everything that uses them) for very little gain. (I am convinced after quite a few tries at the whiteboard that subclassing IO in any way is not a feasible option, look at it's inheritance diagram in Doxygen and you can see why) - AudioEngine::register_audio_input_port is now register_input_port and takes a type argument. Ditto for output. - (Most significant change) AudioDiskstream abstracted into Distream, and sibling MidiDiskstream created. Very much still a work in progress, but Diskstream is there to switch references over to (most already are), which is the important part. It is still unclear what the MIDI diskstream's relation to channels is, but I'm pretty sure they will be single channel only (so SMF Type 0) since noone can come up with a reason otherwise. - MidiTrack creation. Same thing as AudioTrack but with a different default type basically. No big deal here. - Random cleanups and variable renamings etc. because I have OCD and can't help myself. :) Known broken: Loading of sessions containing MIDI tracks. git-svn-id: svn://localhost/ardour2/branches/midi@641 d708f5d6-7413-0410-9779-e7cbd77b26cf
2006-06-26 12:01:34 -04:00
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;
map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
void
GainMeter::setup_slider_pix ()
{
if ((slider = ::get_icon ("fader_belt")) == 0) {
throw failed_constructor();
}
}
GainMeterBase::GainMeterBase (Session* s,
const Glib::RefPtr<Gdk::Pixbuf>& pix,
bool horizontal,
int fader_length)
: gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1) // 0.781787 is the value needed for gain to be set to 0.
, gain_automation_style_button ("")
, gain_automation_state_button ("")
, style_changed (false)
, dpi_changed (false)
, _is_midi (false)
{
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 (pix,
&gain_adjustment,
fader_length,
false));
} else {
gain_slider = manage (new VSliderController (pix,
&gain_adjustment,
fader_length,
false));
}
level_meter = new LevelMeter(_session);
gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::start_gain_touch));
gain_slider->signal_button_release_event().connect (sigc::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 (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");
// 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_label (_("-inf"));
peak_display.unset_flags (Gtk::CAN_FOCUS);
gain_automation_style_button.set_name ("MixerAutomationModeButton");
gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
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));
}
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 (!_route || _route->output()->n_ports().n_midi() == 0) {
_is_midi = false;
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);
} else {
_is_midi = true;
gain_adjustment.set_lower (0.0);
gain_adjustment.set_upper (2.0);
gain_adjustment.set_step_increment (0.05);
gain_adjustment.set_page_increment (0.1);
}
if (!_route || !_route->is_hidden()) {
using namespace Menu_Helpers;
gain_astate_menu.items().clear ();
gain_astate_menu.items().push_back (MenuElem (_("Manual"),
sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
Evoral::Parameter(GainAutomation), (AutoState) 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::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;
if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
/* clamp to displayable values */
f = min (f, 6.0f);
_amp->set_gain (dB_to_coefficient(f), this);
if (gain_display.has_focus()) {
PublicEditor::instance().reset_focus();
}
}
}
void
GainMeterBase::show_gain ()
{
char buf[32];
float v = gain_adjustment.get_value();
if (!_is_midi) {
if (v == 0.0) {
strcpy (buf, _("-inf"));
} else {
snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain (v)));
}
} else {
snprintf (buf, sizeof (buf), "%.1f", v);
}
gain_display.set_text (buf);
}
void
GainMeterBase::gain_adjusted ()
{
if (!ignore_toggle) {
if (_route) {
if (_route->amp() == _amp) {
if (_is_midi) {
_route->set_gain (gain_adjustment.get_value(), this);
} else {
_route->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
}
} else {
_amp->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
}
}
}
show_gain ();
}
void
GainMeterBase::effective_gain_display ()
{
gfloat value;
if (!_route || _route->output()->n_ports().n_midi() == 0) {
value = gain_to_slider_position (_amp->gain());
} else {
value = _amp->gain ();
}
//cerr << this << " for " << _io->name() << " EGAIN = " << value
// << " AGAIN = " << gain_adjustment.get_value () << endl;
// stacktrace (cerr, 20);
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 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_mix_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_mix_group_meter_point (Route& route, MeterPoint mp)
{
RouteGroup* mix_group;
if((mix_group = route.route_group()) != 0){
mix_group->apply (&Route::set_meter_point, mp);
} else {
route.set_meter_point (mp);
}
}
void
GainMeterBase::meter_point_clicked ()
{
if (_route) {
/* WHAT? */
}
}
gint
GainMeterBase::start_gain_touch (GdkEventButton*)
{
_amp->gain_control()->start_touch (_amp->session().transport_frame());
return FALSE;
}
gint
GainMeterBase::end_gain_touch (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 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_label (astyle_string(_amp->gain_control()->alist()->automation_style()));
break;
case Narrow:
gain_automation_style_button.set_label (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_label (astate_string(_amp->gain_control()->alist()->automation_state()));
break;
case Narrow:
gain_automation_state_button.set_label (short_astate_string(_amp->gain_control()->alist()->automation_state()));
break;
}
x = (_amp->gain_control()->alist()->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 (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, slider, false, fader_length)
{
gain_display_box.set_homogeneous (true);
gain_display_box.set_spacing (2);
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 ("MixerAutomationModeButton");
gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
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);
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_spacing (2);
pack_start (gain_display_box, Gtk::PACK_SHRINK);
pack_start (hbox, Gtk::PACK_SHRINK);
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 (level_meter->get_parent()) {
hbox.remove (*level_meter);
}
if (peak_display.get_parent()) {
gain_display_box.remove (peak_display);
}
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), ui_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.
*/
gain_display_box.pack_end (peak_display, true, true);
hbox.pack_end (*level_meter, true, true);
if (r && !r->is_hidden()) {
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;
}
Glib::RefPtr<Gdk::Pixmap>
GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
{
Glib::RefPtr<Gdk::Window> win (w.get_window());
Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
gint width, height;
win->get_size (width, height);
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 (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
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.set_rgb_p (1, 1, 1);
break;
case DataType::MIDI:
c.set_rgb_p (0.2, 0.2, 0.5);
break;
}
fg_gc->set_rgb_fg_color (c);
}
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);
snprintf (buf, sizeof (buf), "%d", abs (*j));
layout->set_text (buf);
/* we want logical extents, not ink extents here */
int tw, th;
layout->get_pixel_size (tw, th);
pixmap->draw_line (fg_gc, 0, pos, 4, pos);
int p = pos - (th / 2);
p = min (p, height - th);
p = max (p, 0);
pixmap->draw_layout (fg_gc, 6, p, layout);
}
}
return pixmap;
}
gint
GainMeter::meter_metrics_expose (GdkEventExpose *ev)
{
Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_INSENSITIVE));
GdkRectangle base_rect;
GdkRectangle draw_rect;
gint width, height;
win->get_size (width, height);
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() || style_changed || dpi_changed) {
pixmap = render_metrics (meter_metric_area, _types);
} else {
pixmap = i->second;
}
gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
style_changed = false;
return true;
}
boost::shared_ptr<PBD::Controllable>
GainMeterBase::get_controllable()
{
if (_amp) {
return _amp->gain_control();
} else {
return boost::shared_ptr<PBD::Controllable>();
}
}
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 ();
}