gtk2_ardour/gain_meter.cc

   1 /*
   2   Copyright (C) 2002 Paul Davis
   3
   4   This program is free software; you can redistribute it and/or modify
   5   it under the terms of the GNU General Public License as published by
   6   the Free Software Foundation; either version 2 of the License, or
   7   (at your option) any later version.
   8
   9   This program is distributed in the hope that it will be useful,
  10   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12   GNU General Public License for more details.
  13
  14   You should have received a copy of the GNU General Public License
  15   along with this program; if not, write to the Free Software
  16   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <limits.h>
  21
  22 #include "ardour/amp.h"
  23 #include "ardour/route_group.h"
  24 #include "ardour/session_route.h"
  25 #include "ardour/dB.h"
  26 #include "ardour/utils.h"
  27
  28 #include <pangomm.h>
  29 #include <gtkmm/style.h>
  30 #include <gdkmm/color.h>
  31 #include <gtkmm2ext/utils.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/barcontroller.h>
  34 #include <gtkmm2ext/gtk_ui.h>
  35 #include "midi++/manager.h"
  36 #include "pbd/fastlog.h"
  37 #include "pbd/stacktrace.h"
  38
  39 #include "ardour_ui.h"
  40 #include "gain_meter.h"
  41 #include "global_signals.h"
  42 #include "logmeter.h"
  43 #include "gui_thread.h"
  44 #include "keyboard.h"
  45 #include "public_editor.h"
  46 #include "utils.h"
  47
  48 #include "ardour/session.h"
  49 #include "ardour/route.h"
  50 #include "ardour/meter.h"
  51 #include "ardour/audio_track.h"
  52 #include "ardour/midi_track.h"
  53
  54 #include "i18n.h"
  55
  56 using namespace ARDOUR;
  57 using namespace PBD;
  58 using namespace Gtkmm2ext;
  59 using namespace Gtk;
  60 using namespace std;
  61 using Gtkmm2ext::Keyboard;
  62
  63 sigc::signal<void> GainMeterBase::ResetAllPeakDisplays;
  64 sigc::signal<void,RouteGroup*> GainMeterBase::ResetGroupPeakDisplays;
  65
  66 GainMeter::MetricPatterns GainMeter::metric_patterns;
  67
  68 GainMeterBase::GainMeterBase (Session* s, bool horizontal, int fader_length, int fader_girth)
  69         : gain_adjustment (gain_to_slider_position_with_max (1.0, Config->get_max_gain()), 0.0, 1.0, 0.01, 0.1)
  70         , gain_automation_style_button ("")
  71         , gain_automation_state_button ("")
  72         , style_changed (false)
  73         , dpi_changed (false)
  74         , _data_type (DataType::AUDIO)
  75
  76 {
  77         using namespace Menu_Helpers;
  78
  79         set_session (s);
  80
  81         ignore_toggle = false;
  82         meter_menu = 0;
  83         next_release_selects = false;
  84         _width = Wide;
  85
  86         if (horizontal) {
  87                 gain_slider = manage (new HSliderController (&gain_adjustment, fader_length, fader_girth, false));
  88         } else {
  89                 gain_slider = manage (new VSliderController (&gain_adjustment, fader_length, fader_girth, false));
  90         }
  91
  92         level_meter = new LevelMeter(_session);
  93
  94         level_meter->ButtonPress.connect_same_thread (_level_meter_connection, boost::bind (&GainMeterBase::level_meter_button_press, this, _1));
  95         meter_metric_area.signal_button_press_event().connect (sigc::mem_fun (*this, &GainMeterBase::level_meter_button_press));
  96         meter_metric_area.add_events (Gdk::BUTTON_PRESS_MASK);
  97
  98         gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_press), false);
  99         gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release), false);
 100         gain_slider->set_name ("GainFader");
 101
 102         gain_display.set_name ("MixerStripGainDisplay");
 103         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 104         gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
 105         gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 106         gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 107
 108         peak_display.set_name ("MixerStripPeakDisplay");
 109         set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
 110         max_peak = minus_infinity();
 111         peak_display.set_label (_("-inf"));
 112         peak_display.unset_flags (Gtk::CAN_FOCUS);
 113
 114         gain_automation_style_button.set_name ("mixer strip button");
 115         gain_automation_state_button.set_name ("mixer strip button");
 116
 117         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 118         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 119
 120         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 121         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 122
 123         gain_automation_state_button.set_size_request(15, 15);
 124         gain_automation_style_button.set_size_request(15, 15);
 125
 126         gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 127         gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 128
 129         gain_astate_menu.set_name ("ArdourContextMenu");
 130         gain_astyle_menu.set_name ("ArdourContextMenu");
 131
 132         gain_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
 133         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
 134         gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
 135
 136         ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
 137         ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
 138
 139         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
 140         ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
 141         DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
 142
 143 //      PBD::ScopedConnection _config_connection;
 144 //      Config->ParameterChanged.connect ( _config_connection, MISSING_INVALIDATOR, boost::bind(&GainMeterBase::set_flat_buttons, this, _1), gui_context() );
 145 }
 146
 147 void
 148 GainMeterBase::set_flat_buttons ()
 149 {
 150 printf("set_flat_butt\n");
 151 //      gain_slider->set_flat_buttons( ARDOUR_UI::config()->flat_buttons.get() );
 152 }
 153
 154 GainMeterBase::~GainMeterBase ()
 155 {
 156         delete meter_menu;
 157         delete level_meter;
 158 }
 159
 160 void
 161 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
 162                              boost::shared_ptr<PeakMeter> pm,
 163                              boost::shared_ptr<Amp> amp)
 164 {
 165         connections.clear ();
 166         model_connections.drop_connections ();
 167
 168         if (!pm && !amp) {
 169                 level_meter->set_meter (0);
 170                 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
 171                 _meter.reset ();
 172                 _amp.reset ();
 173                 _route.reset ();
 174                 return;
 175         }
 176
 177         _meter = pm;
 178         _amp = amp;
 179         _route = r;
 180
 181         level_meter->set_meter (pm.get());
 182         gain_slider->set_controllable (amp->gain_control());
 183
 184         if (amp) {
 185                 amp->ConfigurationChanged.connect (
 186                         model_connections, invalidator (*this), boost::bind (&GainMeterBase::setup_gain_adjustment, this), gui_context ()
 187                         );
 188         }
 189
 190         setup_gain_adjustment ();
 191
 192         if (!_route || !_route->is_auditioner()) {
 193
 194                 using namespace Menu_Helpers;
 195
 196                 gain_astate_menu.items().clear ();
 197
 198                 gain_astate_menu.items().push_back (MenuElem (S_("Automation|Manual"),
 199                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 200                                                                           Evoral::Parameter(GainAutomation), (AutoState) ARDOUR::Off)));
 201                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 202                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 203                                                                     Evoral::Parameter(GainAutomation), (AutoState) Play)));
 204                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 205                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 206                                                                     Evoral::Parameter(GainAutomation), (AutoState) Write)));
 207                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 208                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 209                                                                     Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 210
 211                 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 212                 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 213
 214                 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
 215
 216                 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
 217                 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
 218
 219                 gain_automation_state_changed ();
 220         }
 221
 222         amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
 223
 224         gain_changed ();
 225         show_gain ();
 226         update_gain_sensitive ();
 227 }
 228
 229 void
 230 GainMeterBase::setup_gain_adjustment ()
 231 {
 232         if (!_amp) {
 233                 return;
 234         }
 235
 236         if (_previous_amp_output_streams == _amp->output_streams ()) {
 237                 return;
 238         }
 239
 240         ignore_toggle = true;
 241
 242         if (_amp->output_streams().n_midi() <=  _amp->output_streams().n_audio()) {
 243                 _data_type = DataType::AUDIO;
 244                 gain_adjustment.set_lower (0.0);
 245                 gain_adjustment.set_upper (1.0);
 246                 gain_adjustment.set_step_increment (0.01);
 247                 gain_adjustment.set_page_increment (0.1);
 248                 gain_slider->set_default_value (gain_to_slider_position (1));
 249         } else {
 250                 _data_type = DataType::MIDI;
 251                 gain_adjustment.set_lower (0.0);
 252                 gain_adjustment.set_upper (2.0);
 253                 gain_adjustment.set_step_increment (1.0/128.0);
 254                 gain_adjustment.set_page_increment (10.0/128.0);
 255                 gain_slider->set_default_value (1.0);
 256         }
 257
 258         ignore_toggle = false;
 259
 260         effective_gain_display ();
 261
 262         _previous_amp_output_streams = _amp->output_streams ();
 263 }
 264
 265 void
 266 GainMeterBase::hide_all_meters ()
 267 {
 268         level_meter->hide_meters();
 269 }
 270
 271 void
 272 GainMeter::hide_all_meters ()
 273 {
 274         bool remove_metric_area = false;
 275
 276         GainMeterBase::hide_all_meters ();
 277
 278         if (remove_metric_area) {
 279                 if (meter_metric_area.get_parent()) {
 280                         level_meter->remove (meter_metric_area);
 281                 }
 282         }
 283 }
 284
 285 void
 286 GainMeterBase::setup_meters (int len)
 287 {
 288         int meter_width = 5;
 289         if (_width == Wide && _route && _route->shared_peak_meter()->input_streams().n_total() == 1) {
 290                 meter_width = 10;
 291         }
 292         level_meter->setup_meters(len, meter_width);
 293 }
 294
 295 void
 296 GainMeter::setup_meters (int len)
 297 {
 298         if (!meter_metric_area.get_parent()) {
 299                 level_meter->pack_end (meter_metric_area, false, false);
 300                 meter_metric_area.show_all ();
 301         }
 302         GainMeterBase::setup_meters (len);
 303 }
 304
 305 bool
 306 GainMeterBase::gain_key_press (GdkEventKey* ev)
 307 {
 308         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 309                 /* drop through to normal handling */
 310                 return false;
 311         }
 312         /* illegal key for gain entry */
 313         return true;
 314 }
 315
 316 bool
 317 GainMeterBase::peak_button_release (GdkEventButton* ev)
 318 {
 319         /* reset peak label */
 320
 321         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 322                 ResetAllPeakDisplays ();
 323         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 324                 if (_route) {
 325                         ResetGroupPeakDisplays (_route->route_group());
 326                 }
 327         } else {
 328                 reset_peak_display ();
 329         }
 330
 331         return true;
 332 }
 333
 334 void
 335 GainMeterBase::reset_peak_display ()
 336 {
 337         _meter->reset_max();
 338         level_meter->clear_meters();
 339         max_peak = -INFINITY;
 340         peak_display.set_label (_("-inf"));
 341         peak_display.set_name ("MixerStripPeakDisplay");
 342 }
 343
 344 void
 345 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 346 {
 347         if (_route && group == _route->route_group()) {
 348                 reset_peak_display ();
 349         }
 350 }
 351
 352 void
 353 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 354 {
 355         using namespace Menu_Helpers;
 356
 357         if (meter_menu == 0) {
 358                 meter_menu = new Gtk::Menu;
 359                 MenuList& items = meter_menu->items();
 360
 361                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 362                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 363                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 364                 items.push_back (SeparatorElem());
 365                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 366                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 367                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 368         }
 369
 370         meter_menu->popup (1, ev->time);
 371 }
 372
 373 bool
 374 GainMeterBase::gain_focused (GdkEventFocus* ev)
 375 {
 376         if (ev->in) {
 377                 gain_display.select_region (0, -1);
 378         } else {
 379                 gain_display.select_region (0, 0);
 380         }
 381         return false;
 382 }
 383
 384 void
 385 GainMeterBase::gain_activated ()
 386 {
 387         float f;
 388
 389         {
 390                 // Switch to user's preferred locale so that
 391                 // if they use different LC_NUMERIC conventions,
 392                 // we will honor them.
 393
 394                 PBD::LocaleGuard lg ("");
 395                 if (sscanf (gain_display.get_text().c_str(), "%f", &f) != 1) {
 396                         return;
 397                 }
 398         }
 399
 400         /* clamp to displayable values */
 401         if (_data_type == DataType::AUDIO) {
 402                 f = min (f, 6.0f);
 403                 _amp->set_gain (dB_to_coefficient(f), this);
 404         } else {
 405                 f = min (fabs (f), 2.0f);
 406                 _amp->set_gain (f, this);
 407         }
 408
 409         if (gain_display.has_focus()) {
 410                 Gtk::Widget* w = gain_display.get_toplevel();
 411                 if (w) {
 412                         Gtk::Window* win = dynamic_cast<Gtk::Window*> (w);
 413
 414                         /* sigh. gtkmm doesn't wrap get_default_widget() */
 415
 416                         if (win) {
 417                                 GtkWidget* f = gtk_window_get_default_widget (win->gobj());
 418                                 if (f) {
 419                                         gtk_widget_grab_focus (f);
 420                                         return;
 421                                 }
 422                         }
 423                 }
 424         }
 425 }
 426
 427 void
 428 GainMeterBase::show_gain ()
 429 {
 430         char buf[32];
 431
 432         float v = gain_adjustment.get_value();
 433
 434         switch (_data_type) {
 435         case DataType::AUDIO:
 436                 if (v == 0.0) {
 437                         strcpy (buf, _("-inf"));
 438                 } else {
 439                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
 440                 }
 441                 break;
 442         case DataType::MIDI:
 443                 snprintf (buf, sizeof (buf), "%.1f", v);
 444                 break;
 445         }
 446
 447         gain_display.set_text (buf);
 448 }
 449
 450 void
 451 GainMeterBase::gain_adjusted ()
 452 {
 453         gain_t value;
 454
 455         /* convert from adjustment range (0..1) to gain coefficient */
 456
 457         if (_data_type == DataType::AUDIO) {
 458                 value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
 459         } else {
 460                 value = gain_adjustment.get_value();
 461         }
 462
 463         if (!ignore_toggle) {
 464                 if (_route && _route->amp() == _amp) {
 465                         _route->set_gain (value, this);
 466                 } else {
 467                         _amp->set_gain (value, this);
 468                 }
 469         }
 470
 471         show_gain ();
 472 }
 473
 474 void
 475 GainMeterBase::effective_gain_display ()
 476 {
 477         float value = 0.0;
 478
 479         switch (_data_type) {
 480         case DataType::AUDIO:
 481                 value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
 482                 break;
 483         case DataType::MIDI:
 484                 value = _amp->gain ();
 485                 break;
 486         }
 487
 488         if (gain_adjustment.get_value() != value) {
 489                 ignore_toggle = true;
 490                 gain_adjustment.set_value (value);
 491                 ignore_toggle = false;
 492         }
 493 }
 494
 495 void
 496 GainMeterBase::gain_changed ()
 497 {
 498         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 499 }
 500
 501 void
 502 GainMeterBase::set_meter_strip_name (const char * name)
 503 {
 504         meter_metric_area.set_name (name);
 505 }
 506
 507 void
 508 GainMeterBase::set_fader_name (const char * name)
 509 {
 510         gain_slider->set_name (name);
 511 }
 512
 513 void
 514 GainMeterBase::update_gain_sensitive ()
 515 {
 516         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 517         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 518 }
 519
 520 static MeterPoint
 521 next_meter_point (MeterPoint mp)
 522 {
 523         switch (mp) {
 524         case MeterInput:
 525                 return MeterPreFader;
 526                 break;
 527
 528         case MeterPreFader:
 529                 return MeterPostFader;
 530                 break;
 531
 532         case MeterPostFader:
 533                 return MeterOutput;
 534                 break;
 535
 536         case MeterOutput:
 537                 return MeterCustom;
 538                 break;
 539
 540         case MeterCustom:
 541                 return MeterInput;
 542                 break;
 543         }
 544
 545         /*NOTREACHED*/
 546         return MeterInput;
 547 }
 548
 549 gint
 550 GainMeterBase::meter_press(GdkEventButton* ev)
 551 {
 552         wait_for_release = false;
 553
 554         if (!_route) {
 555                 return FALSE;
 556         }
 557
 558         if (!ignore_toggle) {
 559
 560                 if (Keyboard::is_context_menu_event (ev)) {
 561
 562                         // no menu at this time.
 563
 564                 } else {
 565
 566                         if (Keyboard::is_button2_event(ev)) {
 567
 568                                 // Primary-button2 click is the midi binding click
 569                                 // button2-click is "momentary"
 570
 571                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 572                                         wait_for_release = true;
 573                                         old_meter_point = _route->meter_point ();
 574                                 }
 575                         }
 576
 577                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 578
 579                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 580
 581                                         /* Primary+Tertiary-click applies change to all routes */
 582
 583                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 584
 585
 586                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 587
 588                                         /* Primary-click: solo mix group.
 589                                            NOTE: Primary-button2 is MIDI learn.
 590                                         */
 591
 592                                         if (ev->button == 1) {
 593                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 594                                         }
 595
 596                                 } else {
 597
 598                                         /* click: change just this route */
 599
 600                                         // XXX no undo yet
 601
 602                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 603                                 }
 604                         }
 605                 }
 606         }
 607
 608         return true;
 609
 610 }
 611
 612 gint
 613 GainMeterBase::meter_release(GdkEventButton*)
 614 {
 615         if (!ignore_toggle) {
 616                 if (wait_for_release) {
 617                         wait_for_release = false;
 618
 619                         if (_route) {
 620                                 set_meter_point (*_route, old_meter_point);
 621                         }
 622                 }
 623         }
 624
 625         return true;
 626 }
 627
 628 void
 629 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 630 {
 631         route.set_meter_point (mp);
 632 }
 633
 634 void
 635 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 636 {
 637         RouteGroup* route_group;
 638
 639         if ((route_group = route.route_group ()) != 0) {
 640                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 641         } else {
 642                 route.set_meter_point (mp);
 643         }
 644 }
 645
 646 void
 647 GainMeterBase::meter_point_clicked ()
 648 {
 649         if (_route) {
 650                 /* WHAT? */
 651         }
 652 }
 653
 654 bool
 655 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 656 {
 657         switch (ev->type) {
 658         case GDK_BUTTON_PRESS:
 659                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 660                 break;
 661         default:
 662                 return false;
 663         }
 664
 665         return false;
 666 }
 667
 668 bool
 669 GainMeterBase::gain_slider_button_release (GdkEventButton*)
 670 {
 671         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 672         return false;
 673 }
 674
 675 gint
 676 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 677 {
 678         if (ev->type == GDK_BUTTON_RELEASE) {
 679                 return TRUE;
 680         }
 681
 682         switch (ev->button) {
 683                 case 1:
 684                         gain_astate_menu.popup (1, ev->time);
 685                         break;
 686                 default:
 687                         break;
 688         }
 689
 690         return TRUE;
 691 }
 692
 693 gint
 694 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 695 {
 696         if (ev->type == GDK_BUTTON_RELEASE) {
 697                 return TRUE;
 698         }
 699
 700         switch (ev->button) {
 701         case 1:
 702                 gain_astyle_menu.popup (1, ev->time);
 703                 break;
 704         default:
 705                 break;
 706         }
 707         return TRUE;
 708 }
 709
 710 string
 711 GainMeterBase::astate_string (AutoState state)
 712 {
 713         return _astate_string (state, false);
 714 }
 715
 716 string
 717 GainMeterBase::short_astate_string (AutoState state)
 718 {
 719         return _astate_string (state, true);
 720 }
 721
 722 string
 723 GainMeterBase::_astate_string (AutoState state, bool shrt)
 724 {
 725         string sstr;
 726
 727         switch (state) {
 728         case ARDOUR::Off:
 729                 sstr = (shrt ? "M" : _("M"));
 730                 break;
 731         case Play:
 732                 sstr = (shrt ? "P" : _("P"));
 733                 break;
 734         case Touch:
 735                 sstr = (shrt ? "T" : _("T"));
 736                 break;
 737         case Write:
 738                 sstr = (shrt ? "W" : _("W"));
 739                 break;
 740         }
 741
 742         return sstr;
 743 }
 744
 745 string
 746 GainMeterBase::astyle_string (AutoStyle style)
 747 {
 748         return _astyle_string (style, false);
 749 }
 750
 751 string
 752 GainMeterBase::short_astyle_string (AutoStyle style)
 753 {
 754         return _astyle_string (style, true);
 755 }
 756
 757 string
 758 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 759 {
 760         if (style & Trim) {
 761                 return _("Trim");
 762         } else {
 763                 /* XXX it might different in different languages */
 764
 765                 return (shrt ? _("Abs") : _("Abs"));
 766         }
 767 }
 768
 769 void
 770 GainMeterBase::gain_automation_style_changed ()
 771 {
 772         switch (_width) {
 773         case Wide:
 774                 gain_automation_style_button.set_text (astyle_string(_amp->gain_control()->alist()->automation_style()));
 775                 break;
 776         case Narrow:
 777                 gain_automation_style_button.set_text  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 778                 break;
 779         }
 780 }
 781
 782 void
 783 GainMeterBase::gain_automation_state_changed ()
 784 {
 785         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 786
 787         bool x;
 788
 789         switch (_width) {
 790         case Wide:
 791                 gain_automation_state_button.set_text (astate_string(_amp->gain_control()->alist()->automation_state()));
 792                 break;
 793         case Narrow:
 794                 gain_automation_state_button.set_text (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 795                 break;
 796         }
 797
 798         x = (_amp->gain_control()->alist()->automation_state() != ARDOUR::Off);
 799
 800         if (gain_automation_state_button.get_active() != x) {
 801                 ignore_toggle = true;
 802                 gain_automation_state_button.set_active (x);
 803                 ignore_toggle = false;
 804         }
 805
 806         update_gain_sensitive ();
 807
 808         /* start watching automation so that things move */
 809
 810         gain_watching.disconnect();
 811
 812         if (x) {
 813                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 814         }
 815 }
 816
 817 void
 818 GainMeterBase::update_meters()
 819 {
 820         char buf[32];
 821         float mpeak = level_meter->update_meters();
 822
 823         if (mpeak > max_peak) {
 824                 max_peak = mpeak;
 825                 if (mpeak <= -200.0f) {
 826                         peak_display.set_label (_("-inf"));
 827                 } else {
 828                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 829                         peak_display.set_label (buf);
 830                 }
 831
 832                 if (mpeak >= 0.0f) {
 833                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 834                 }
 835         }
 836 }
 837
 838 void GainMeterBase::color_handler(bool dpi)
 839 {
 840         color_changed = true;
 841         dpi_changed = (dpi) ? true : false;
 842         setup_meters();
 843 }
 844
 845 void
 846 GainMeterBase::set_width (Width w, int len)
 847 {
 848         _width = w;
 849         int meter_width = 5;
 850         if (_width == Wide && _route && _route->shared_peak_meter()->input_streams().n_total() == 1) {
 851                 meter_width = 10;
 852         }
 853         level_meter->setup_meters(len, meter_width);
 854 }
 855
 856
 857 void
 858 GainMeterBase::on_theme_changed()
 859 {
 860         style_changed = true;
 861 }
 862
 863 GainMeter::GainMeter (Session* s, int fader_length)
 864         : GainMeterBase (s, false, fader_length, 24)
 865         , gain_display_box(true, 0)
 866         , hbox(true, 2)
 867 {
 868         if (gain_display.get_parent()) {
 869                 gain_display.get_parent()->remove (gain_display);
 870         }
 871         gain_display_box.pack_start (gain_display, true, true);
 872
 873         meter_metric_area.set_name ("AudioTrackMetrics");
 874         set_size_request_to_display_given_text (meter_metric_area, "-127", 1, 0);
 875
 876         gain_automation_style_button.set_name ("mixer strip button");
 877         gain_automation_state_button.set_name ("mixer strip button");
 878
 879         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 880         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 881
 882         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 883         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 884
 885         gain_automation_state_button.set_size_request(15, 15);
 886         gain_automation_style_button.set_size_request(15, 15);
 887
 888         fader_vbox = manage (new Gtk::VBox());
 889         fader_vbox->set_spacing (0);
 890         fader_vbox->pack_start (*gain_slider, true, true);
 891
 892         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 893         fader_alignment.add (*fader_vbox);
 894
 895         hbox.pack_start (fader_alignment, true, true);
 896
 897         set_spacing (2);
 898
 899         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 900         pack_start (hbox, Gtk::PACK_SHRINK);
 901
 902         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 903         meter_alignment.add (*level_meter);
 904
 905         meter_metric_area.signal_expose_event().connect (
 906                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 907 }
 908
 909 void
 910 GainMeter::set_controls (boost::shared_ptr<Route> r,
 911                          boost::shared_ptr<PeakMeter> meter,
 912                          boost::shared_ptr<Amp> amp)
 913 {
 914         if (meter_alignment.get_parent()) {
 915                 hbox.remove (meter_alignment);
 916         }
 917
 918 //      if (gain_automation_state_button.get_parent()) {
 919 //              fader_vbox->remove (gain_automation_state_button);
 920 //      }
 921
 922         GainMeterBase::set_controls (r, meter, amp);
 923
 924         if (_meter) {
 925                 _meter->ConfigurationChanged.connect (
 926                         model_connections, invalidator (*this), boost::bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 927                         );
 928
 929                 meter_configuration_changed (_meter->input_streams ());
 930         }
 931
 932
 933         /*
 934            if we have a non-hidden route (ie. we're not the click or the auditioner),
 935            pack some route-dependent stuff.
 936         */
 937
 938         hbox.pack_start (meter_alignment, true, true);
 939
 940 //      if (r && !r->is_auditioner()) {
 941 //              fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 942 //      }
 943
 944         setup_meters ();
 945         hbox.show_all ();
 946 }
 947
 948 int
 949 GainMeter::get_gm_width ()
 950 {
 951         Gtk::Requisition sz;
 952         hbox.size_request (sz);
 953         return sz.width;
 954 }
 955
 956 cairo_pattern_t*
 957 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 958 {
 959         Glib::RefPtr<Gdk::Window> win (w.get_window());
 960
 961         gint width, height;
 962         win->get_size (width, height);
 963
 964         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 965         cairo_t* cr = cairo_create (surface);
 966         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 967
 968
 969         Pango::AttrList audio_font_attributes;
 970         Pango::AttrList midi_font_attributes;
 971
 972         Pango::AttrFontDesc* font_attr;
 973         Pango::FontDescription font;
 974
 975         font = Pango::FontDescription (""); // use defaults
 976         //font = get_font_for_style("gain-fader");
 977         //font = w.get_style()->get_font();
 978
 979         font.set_weight (Pango::WEIGHT_NORMAL);
 980         font.set_size (9.0 * PANGO_SCALE);
 981         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 982         audio_font_attributes.change (*font_attr);
 983         delete font_attr;
 984
 985         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 986         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 987         font.set_size (7.5 * PANGO_SCALE);
 988         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 989         midi_font_attributes.change (*font_attr);
 990         delete font_attr;
 991
 992
 993         cairo_move_to (cr, 0, 0);
 994         cairo_rectangle (cr, 0, 0, width, height);
 995         {
 996                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 997                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 998         }
 999         cairo_fill (cr);
1000
1001         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
1002
1003                 Gdk::Color c;
1004
1005                 if (types.size() > 1) {
1006                         /* we're overlaying more than 1 set of marks, so use different colours */
1007                         Gdk::Color c;
1008                         switch (*i) {
1009                         case DataType::AUDIO:
1010                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1011                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1012                                 break;
1013                         case DataType::MIDI:
1014                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
1015                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1016                                 break;
1017                         }
1018                 } else {
1019                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1020                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1021                 }
1022
1023                 vector<int> points;
1024
1025                 switch (*i) {
1026                 case DataType::AUDIO:
1027                         layout->set_attributes (audio_font_attributes);
1028                         points.push_back (-50);
1029                         points.push_back (-40);
1030                         points.push_back (-30);
1031                         points.push_back (-20);
1032                         points.push_back (-10);
1033                         points.push_back (-3);
1034                         points.push_back (0);
1035                         points.push_back (4);
1036                         break;
1037
1038                 case DataType::MIDI:
1039                         layout->set_attributes (midi_font_attributes);
1040                         points.push_back (0);
1041                         if (types.size() == 1) {
1042                                 points.push_back (32);
1043                         } else {
1044                                 /* tweak so as not to overlay the -30dB mark */
1045                                 points.push_back (48);
1046                         }
1047                         points.push_back (64);
1048                         points.push_back (96);
1049                         points.push_back (127);
1050                         break;
1051                 }
1052
1053                 char buf[32];
1054
1055                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
1056
1057                         float fraction = 0;
1058                         switch (*i) {
1059                         case DataType::AUDIO:
1060                                 fraction = log_meter (*j);
1061                                 break;
1062                         case DataType::MIDI:
1063                                 fraction = *j / 127.0;
1064                                 break;
1065                         }
1066
1067                         gint const pos = 1 + height - (gint) floor (height * fraction);
1068                         float const linepos = min((float) height, (float)(pos + .5f));
1069
1070                         cairo_set_line_width (cr, 1.0);
1071                         cairo_move_to (cr, 0, linepos);
1072                         cairo_line_to (cr, 3.5, linepos);
1073                         cairo_stroke (cr);
1074
1075                         snprintf (buf, sizeof (buf), "%2d", abs (*j));
1076                         layout->set_text(buf);
1077
1078                         /* we want logical extents, not ink extents here */
1079
1080                         int tw, th;
1081                         layout->get_pixel_size(tw, th);
1082
1083                         int p = pos - (th / 2);
1084                         p = min (p, height - th);
1085                         p = max (p, 0);
1086
1087                         cairo_move_to (cr, 5, p);
1088                         pango_cairo_show_layout (cr, layout->gobj());
1089                 }
1090         }
1091
1092         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1093         MetricPatterns::iterator p;
1094
1095         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
1096                 cairo_pattern_destroy (p->second);
1097         }
1098
1099         metric_patterns[w.get_name()] = pattern;
1100
1101         cairo_destroy (cr);
1102         cairo_surface_destroy (surface);
1103
1104         return pattern;
1105 }
1106
1107 gint
1108 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1109 {
1110         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1111         cairo_t* cr;
1112
1113         cr = gdk_cairo_create (win->gobj());
1114
1115         /* clip to expose area */
1116
1117         gdk_cairo_rectangle (cr, &ev->area);
1118         cairo_clip (cr);
1119
1120         cairo_pattern_t* pattern;
1121         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
1122
1123         if (i == metric_patterns.end() || style_changed || dpi_changed) {
1124                 pattern = render_metrics (meter_metric_area, _types);
1125         } else {
1126                 pattern = i->second;
1127         }
1128
1129         cairo_move_to (cr, 0, 0);
1130         cairo_set_source (cr, pattern);
1131
1132         gint width, height;
1133         win->get_size (width, height);
1134
1135         cairo_rectangle (cr, 0, 0, width, height);
1136         cairo_fill (cr);
1137
1138         style_changed = false;
1139         dpi_changed = false;
1140
1141         cairo_destroy (cr);
1142
1143         return true;
1144 }
1145
1146 boost::shared_ptr<PBD::Controllable>
1147 GainMeterBase::get_controllable()
1148 {
1149         if (_amp) {
1150                 return _amp->gain_control();
1151         } else {
1152                 return boost::shared_ptr<PBD::Controllable>();
1153         }
1154 }
1155
1156 bool
1157 GainMeterBase::level_meter_button_press (GdkEventButton* ev)
1158 {
1159         return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
1160 }
1161
1162 void
1163 GainMeter::meter_configuration_changed (ChanCount c)
1164 {
1165         int type = 0;
1166         _types.clear ();
1167
1168         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1169                 if (c.get (*i) > 0) {
1170                         _types.push_back (*i);
1171                         type |= 1 << (*i);
1172                 }
1173         }
1174
1175         if (_route
1176                         && boost::dynamic_pointer_cast<AudioTrack>(_route) == 0
1177                         && boost::dynamic_pointer_cast<MidiTrack>(_route) == 0
1178                         ) {
1179                 if (_route->active()) {
1180                         set_meter_strip_name ("AudioBusMetrics");
1181                 } else {
1182                         set_meter_strip_name ("AudioBusMetricsInactive");
1183                 }
1184         }
1185         else if (type == (1 << DataType::AUDIO)) {
1186                 if (!_route || _route->active()) {
1187                         set_meter_strip_name ("AudioTrackMetrics");
1188                 } else {
1189                         set_meter_strip_name ("AudioTrackMetricsInactive");
1190                 }
1191         }
1192         else if (type == (1 << DataType::MIDI)) {
1193                 if (!_route || _route->active()) {
1194                         set_meter_strip_name ("MidiTrackMetrics");
1195                 } else {
1196                         set_meter_strip_name ("MidiTrackMetricsInactive");
1197                 }
1198         } else {
1199                 if (!_route || _route->active()) {
1200                         set_meter_strip_name ("AudioMidiTrackMetrics");
1201                 } else {
1202                         set_meter_strip_name ("AudioMidiTrackMetricsInactive");
1203                 }
1204         }
1205
1206         style_changed = true;
1207         meter_metric_area.queue_draw ();
1208 }
1209