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/io.h"
  24 #include "ardour/route.h"
  25 #include "ardour/route_group.h"
  26 #include "ardour/session.h"
  27 #include "ardour/session_route.h"
  28 #include "ardour/dB.h"
  29 #include "ardour/utils.h"
  30
  31 #include <gtkmm/style.h>
  32 #include <gdkmm/color.h>
  33 #include <gtkmm2ext/utils.h>
  34 #include <gtkmm2ext/fastmeter.h>
  35 #include <gtkmm2ext/barcontroller.h>
  36 #include <gtkmm2ext/gtk_ui.h>
  37 #include "midi++/manager.h"
  38 #include "pbd/fastlog.h"
  39 #include "pbd/stacktrace.h"
  40
  41 #include "ardour_ui.h"
  42 #include "gain_meter.h"
  43 #include "global_signals.h"
  44 #include "logmeter.h"
  45 #include "gui_thread.h"
  46 #include "keyboard.h"
  47 #include "public_editor.h"
  48 #include "utils.h"
  49
  50 #include "ardour/session.h"
  51 #include "ardour/route.h"
  52 #include "ardour/meter.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 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  68
  69
  70 void
  71 GainMeter::setup_slider_pix ()
  72 {
  73         if ((slider = ::get_icon ("fader_belt")) == 0) {
  74                 throw failed_constructor();
  75         }
  76 }
  77
  78 GainMeterBase::GainMeterBase (Session* s,
  79                               const Glib::RefPtr<Gdk::Pixbuf>& pix,
  80                               bool horizontal,
  81                               int fader_length)
  82         : gain_adjustment (gain_to_slider_position_with_max (1.0, Config->get_max_gain()), 0.0, 1.0, 0.01, 0.1)
  83         , gain_automation_style_button ("")
  84         , gain_automation_state_button ("")
  85         , style_changed (false)
  86         , dpi_changed (false)
  87         , _data_type (DataType::AUDIO)
  88
  89 {
  90         using namespace Menu_Helpers;
  91
  92         set_session (s);
  93
  94         ignore_toggle = false;
  95         meter_menu = 0;
  96         next_release_selects = false;
  97         _width = Wide;
  98
  99         if (horizontal) {
 100                 gain_slider = manage (new HSliderController (pix,
 101                                                              &gain_adjustment,
 102                                                              fader_length,
 103                                                              false));
 104         } else {
 105                 gain_slider = manage (new VSliderController (pix,
 106                                                              &gain_adjustment,
 107                                                              fader_length,
 108                                                              false));
 109         }
 110
 111         level_meter = new LevelMeter(_session);
 112
 113         level_meter->ButtonPress.connect_same_thread (_level_meter_connection, boost::bind (&GainMeterBase::level_meter_button_press, this, _1));
 114         meter_metric_area.signal_button_press_event().connect (sigc::mem_fun (*this, &GainMeterBase::level_meter_button_press));
 115         meter_metric_area.add_events (Gdk::BUTTON_PRESS_MASK);
 116
 117         gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_press));
 118         gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release));
 119         gain_slider->set_name ("GainFader");
 120
 121         gain_display.set_name ("MixerStripGainDisplay");
 122         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 123         gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
 124         gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 125         gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 126
 127         peak_display.set_name ("MixerStripPeakDisplay");
 128         set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
 129         max_peak = minus_infinity();
 130         peak_display.set_label (_("-inf"));
 131         peak_display.unset_flags (Gtk::CAN_FOCUS);
 132
 133         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 134         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 135
 136         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 137         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 138
 139         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 140         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 141
 142         gain_automation_state_button.set_size_request(15, 15);
 143         gain_automation_style_button.set_size_request(15, 15);
 144
 145         gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 146         gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 147
 148         gain_astate_menu.set_name ("ArdourContextMenu");
 149         gain_astyle_menu.set_name ("ArdourContextMenu");
 150
 151         gain_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
 152         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
 153         gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
 154
 155         ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
 156         ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
 157
 158         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
 159         ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
 160         DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
 161 }
 162
 163 GainMeterBase::~GainMeterBase ()
 164 {
 165         delete meter_menu;
 166         delete level_meter;
 167 }
 168
 169 void
 170 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
 171                              boost::shared_ptr<PeakMeter> pm,
 172                              boost::shared_ptr<Amp> amp)
 173 {
 174         connections.clear ();
 175         model_connections.drop_connections ();
 176
 177         if (!pm && !amp) {
 178                 level_meter->set_meter (0);
 179                 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
 180                 _meter.reset ();
 181                 _amp.reset ();
 182                 _route.reset ();
 183                 return;
 184         }
 185
 186         _meter = pm;
 187         _amp = amp;
 188         _route = r;
 189
 190         level_meter->set_meter (pm.get());
 191         gain_slider->set_controllable (amp->gain_control());
 192
 193         if (amp) {
 194                 amp->ConfigurationChanged.connect (
 195                         model_connections, invalidator (*this), ui_bind (&GainMeterBase::setup_gain_adjustment, this), gui_context ()
 196                         );
 197         }
 198
 199         setup_gain_adjustment ();
 200
 201         if (!_route || !_route->is_hidden()) {
 202
 203                 using namespace Menu_Helpers;
 204
 205                 gain_astate_menu.items().clear ();
 206
 207                 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 208                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 209                                                                     Evoral::Parameter(GainAutomation), (AutoState) Off)));
 210                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 211                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 212                                                                     Evoral::Parameter(GainAutomation), (AutoState) Play)));
 213                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 214                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 215                                                                     Evoral::Parameter(GainAutomation), (AutoState) Write)));
 216                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 217                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 218                                                                     Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 219
 220                 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 221                 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 222
 223                 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
 224
 225                 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
 226                 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
 227
 228                 gain_automation_state_changed ();
 229         }
 230
 231         amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
 232
 233         gain_changed ();
 234         show_gain ();
 235         update_gain_sensitive ();
 236 }
 237
 238 void
 239 GainMeterBase::setup_gain_adjustment ()
 240 {
 241         if (!_amp) {
 242                 return;
 243         }
 244
 245         if (_previous_amp_output_streams == _amp->output_streams ()) {
 246                 return;
 247         }
 248
 249         ignore_toggle = true;
 250
 251         if (_amp->output_streams().n_midi() == 0) {
 252                 _data_type = DataType::AUDIO;
 253                 gain_adjustment.set_lower (0.0);
 254                 gain_adjustment.set_upper (1.0);
 255                 gain_adjustment.set_step_increment (0.01);
 256                 gain_adjustment.set_page_increment (0.1);
 257                 gain_slider->set_default_value (gain_to_slider_position (1));
 258         } else {
 259                 _data_type = DataType::MIDI;
 260                 gain_adjustment.set_lower (0.0);
 261                 gain_adjustment.set_upper (2.0);
 262                 gain_adjustment.set_step_increment (0.05);
 263                 gain_adjustment.set_page_increment (0.1);
 264                 gain_slider->set_default_value (1);
 265         }
 266
 267         ignore_toggle = false;
 268
 269         effective_gain_display ();
 270
 271         _previous_amp_output_streams = _amp->output_streams ();
 272 }
 273
 274 void
 275 GainMeterBase::hide_all_meters ()
 276 {
 277         level_meter->hide_meters();
 278 }
 279
 280 void
 281 GainMeter::hide_all_meters ()
 282 {
 283         bool remove_metric_area = false;
 284
 285         GainMeterBase::hide_all_meters ();
 286
 287         if (remove_metric_area) {
 288                 if (meter_metric_area.get_parent()) {
 289                         level_meter->remove (meter_metric_area);
 290                 }
 291         }
 292 }
 293
 294 void
 295 GainMeterBase::setup_meters (int len)
 296 {
 297         level_meter->setup_meters(len, 5);
 298 }
 299
 300 void
 301 GainMeter::setup_meters (int len)
 302 {
 303         if (!meter_metric_area.get_parent()) {
 304                 level_meter->pack_end (meter_metric_area, false, false);
 305                 meter_metric_area.show_all ();
 306         }
 307         GainMeterBase::setup_meters (len);
 308 }
 309
 310 bool
 311 GainMeterBase::gain_key_press (GdkEventKey* ev)
 312 {
 313         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 314                 /* drop through to normal handling */
 315                 return false;
 316         }
 317         /* illegal key for gain entry */
 318         return true;
 319 }
 320
 321 bool
 322 GainMeterBase::peak_button_release (GdkEventButton* ev)
 323 {
 324         /* reset peak label */
 325
 326         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 327                 ResetAllPeakDisplays ();
 328         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 329                 if (_route) {
 330                         ResetGroupPeakDisplays (_route->route_group());
 331                 }
 332         } else {
 333                 reset_peak_display ();
 334         }
 335
 336         return true;
 337 }
 338
 339 void
 340 GainMeterBase::reset_peak_display ()
 341 {
 342         _meter->reset_max();
 343         level_meter->clear_meters();
 344         max_peak = -INFINITY;
 345         peak_display.set_label (_("-Inf"));
 346         peak_display.set_name ("MixerStripPeakDisplay");
 347 }
 348
 349 void
 350 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 351 {
 352         if (_route && group == _route->route_group()) {
 353                 reset_peak_display ();
 354         }
 355 }
 356
 357 void
 358 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 359 {
 360         using namespace Menu_Helpers;
 361
 362         if (meter_menu == 0) {
 363                 meter_menu = new Gtk::Menu;
 364                 MenuList& items = meter_menu->items();
 365
 366                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 367                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 368                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 369                 items.push_back (SeparatorElem());
 370                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 371                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 372                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 373         }
 374
 375         meter_menu->popup (1, ev->time);
 376 }
 377
 378 bool
 379 GainMeterBase::gain_focused (GdkEventFocus* ev)
 380 {
 381         if (ev->in) {
 382                 gain_display.select_region (0, -1);
 383         } else {
 384                 gain_display.select_region (0, 0);
 385         }
 386         return false;
 387 }
 388
 389 void
 390 GainMeterBase::gain_activated ()
 391 {
 392         float f;
 393
 394         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 395
 396                 /* clamp to displayable values */
 397
 398                 f = min (f, 6.0f);
 399
 400                 _amp->set_gain (dB_to_coefficient(f), this);
 401
 402                 if (gain_display.has_focus()) {
 403                         PublicEditor::instance().reset_focus();
 404                 }
 405         }
 406 }
 407
 408 void
 409 GainMeterBase::show_gain ()
 410 {
 411         char buf[32];
 412
 413         float v = gain_adjustment.get_value();
 414
 415         switch (_data_type) {
 416         case DataType::AUDIO:
 417                 if (v == 0.0) {
 418                         strcpy (buf, _("-inf"));
 419                 } else {
 420                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
 421                 }
 422                 break;
 423         case DataType::MIDI:
 424                 snprintf (buf, sizeof (buf), "%.1f", v);
 425                 break;
 426         }
 427
 428         gain_display.set_text (buf);
 429 }
 430
 431 void
 432 GainMeterBase::gain_adjusted ()
 433 {
 434         gain_t value = 0;
 435
 436         switch (_data_type) {
 437         case DataType::AUDIO:
 438                 value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
 439                 break;
 440         case DataType::MIDI:
 441                 value = gain_adjustment.get_value ();
 442                 break;
 443         }
 444
 445         if (!ignore_toggle) {
 446                 if (_route && _route->amp() == _amp) {
 447                         _route->set_gain (value, this);
 448                 } else {
 449                         _amp->set_gain (value, this);
 450                 }
 451         }
 452
 453         show_gain ();
 454 }
 455
 456 void
 457 GainMeterBase::effective_gain_display ()
 458 {
 459         float value = 0.0;
 460
 461         switch (_data_type) {
 462         case DataType::AUDIO:
 463                 value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
 464                 break;
 465         case DataType::MIDI:
 466                 value = _amp->gain ();
 467                 break;
 468         }
 469
 470         if (gain_adjustment.get_value() != value) {
 471                 ignore_toggle = true;
 472                 gain_adjustment.set_value (value);
 473                 ignore_toggle = false;
 474         }
 475 }
 476
 477 void
 478 GainMeterBase::gain_changed ()
 479 {
 480         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 481 }
 482
 483 void
 484 GainMeterBase::set_meter_strip_name (const char * name)
 485 {
 486         meter_metric_area.set_name (name);
 487 }
 488
 489 void
 490 GainMeterBase::set_fader_name (const char * name)
 491 {
 492         uint32_t rgb_active = rgba_from_style (name, 0xff, 0, 0xff, 0, "bg", STATE_ACTIVE, false);
 493         uint32_t rgb_normal = rgba_from_style (name, 0xff, 0xff, 0, 0, "bg", STATE_NORMAL, false);
 494
 495         gain_slider->set_border_colors (rgb_normal, rgb_active);
 496 }
 497
 498 void
 499 GainMeterBase::update_gain_sensitive ()
 500 {
 501         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 502         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 503 }
 504
 505 static MeterPoint
 506 next_meter_point (MeterPoint mp)
 507 {
 508         switch (mp) {
 509         case MeterInput:
 510                 return MeterPreFader;
 511                 break;
 512
 513         case MeterPreFader:
 514                 return MeterPostFader;
 515                 break;
 516
 517         case MeterPostFader:
 518                 return MeterOutput;
 519                 break;
 520
 521         case MeterOutput:
 522                 return MeterCustom;
 523                 break;
 524
 525         case MeterCustom:
 526                 return MeterInput;
 527                 break;
 528         }
 529
 530         /*NOTREACHED*/
 531         return MeterInput;
 532 }
 533
 534 gint
 535 GainMeterBase::meter_press(GdkEventButton* ev)
 536 {
 537         wait_for_release = false;
 538
 539         if (!_route) {
 540                 return FALSE;
 541         }
 542
 543         if (!ignore_toggle) {
 544
 545                 if (Keyboard::is_context_menu_event (ev)) {
 546
 547                         // no menu at this time.
 548
 549                 } else {
 550
 551                         if (Keyboard::is_button2_event(ev)) {
 552
 553                                 // Primary-button2 click is the midi binding click
 554                                 // button2-click is "momentary"
 555
 556                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 557                                         wait_for_release = true;
 558                                         old_meter_point = _route->meter_point ();
 559                                 }
 560                         }
 561
 562                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 563
 564                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 565
 566                                         /* Primary+Tertiary-click applies change to all routes */
 567
 568                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 569
 570
 571                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 572
 573                                         /* Primary-click: solo mix group.
 574                                            NOTE: Primary-button2 is MIDI learn.
 575                                         */
 576
 577                                         if (ev->button == 1) {
 578                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 579                                         }
 580
 581                                 } else {
 582
 583                                         /* click: change just this route */
 584
 585                                         // XXX no undo yet
 586
 587                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 588                                 }
 589                         }
 590                 }
 591         }
 592
 593         return true;
 594
 595 }
 596
 597 gint
 598 GainMeterBase::meter_release(GdkEventButton*)
 599 {
 600         if (!ignore_toggle) {
 601                 if (wait_for_release) {
 602                         wait_for_release = false;
 603
 604                         if (_route) {
 605                                 set_meter_point (*_route, old_meter_point);
 606                         }
 607                 }
 608         }
 609
 610         return true;
 611 }
 612
 613 void
 614 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 615 {
 616         route.set_meter_point (mp);
 617 }
 618
 619 void
 620 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 621 {
 622         RouteGroup* route_group;
 623
 624         if ((route_group = route.route_group ()) != 0) {
 625                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 626         } else {
 627                 route.set_meter_point (mp);
 628         }
 629 }
 630
 631 void
 632 GainMeterBase::meter_point_clicked ()
 633 {
 634         if (_route) {
 635                 /* WHAT? */
 636         }
 637 }
 638
 639 bool
 640 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 641 {
 642         switch (ev->type) {
 643         case GDK_BUTTON_PRESS:
 644                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 645                 break;
 646         default:
 647                 return false;
 648         }
 649
 650         return true;
 651 }
 652
 653 bool
 654 GainMeterBase::gain_slider_button_release (GdkEventButton*)
 655 {
 656         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 657         return true;
 658 }
 659
 660 gint
 661 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 662 {
 663         if (ev->type == GDK_BUTTON_RELEASE) {
 664                 return TRUE;
 665         }
 666
 667         switch (ev->button) {
 668                 case 1:
 669                         gain_astate_menu.popup (1, ev->time);
 670                         break;
 671                 default:
 672                         break;
 673         }
 674
 675         return TRUE;
 676 }
 677
 678 gint
 679 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 680 {
 681         if (ev->type == GDK_BUTTON_RELEASE) {
 682                 return TRUE;
 683         }
 684
 685         switch (ev->button) {
 686         case 1:
 687                 gain_astyle_menu.popup (1, ev->time);
 688                 break;
 689         default:
 690                 break;
 691         }
 692         return TRUE;
 693 }
 694
 695 string
 696 GainMeterBase::astate_string (AutoState state)
 697 {
 698         return _astate_string (state, false);
 699 }
 700
 701 string
 702 GainMeterBase::short_astate_string (AutoState state)
 703 {
 704         return _astate_string (state, true);
 705 }
 706
 707 string
 708 GainMeterBase::_astate_string (AutoState state, bool shrt)
 709 {
 710         string sstr;
 711
 712         switch (state) {
 713         case Off:
 714                 sstr = (shrt ? "M" : _("M"));
 715                 break;
 716         case Play:
 717                 sstr = (shrt ? "P" : _("P"));
 718                 break;
 719         case Touch:
 720                 sstr = (shrt ? "T" : _("T"));
 721                 break;
 722         case Write:
 723                 sstr = (shrt ? "W" : _("W"));
 724                 break;
 725         }
 726
 727         return sstr;
 728 }
 729
 730 string
 731 GainMeterBase::astyle_string (AutoStyle style)
 732 {
 733         return _astyle_string (style, false);
 734 }
 735
 736 string
 737 GainMeterBase::short_astyle_string (AutoStyle style)
 738 {
 739         return _astyle_string (style, true);
 740 }
 741
 742 string
 743 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 744 {
 745         if (style & Trim) {
 746                 return _("Trim");
 747         } else {
 748                 /* XXX it might different in different languages */
 749
 750                 return (shrt ? _("Abs") : _("Abs"));
 751         }
 752 }
 753
 754 void
 755 GainMeterBase::gain_automation_style_changed ()
 756 {
 757         switch (_width) {
 758         case Wide:
 759                 gain_automation_style_button.set_label (astyle_string(_amp->gain_control()->alist()->automation_style()));
 760                 break;
 761         case Narrow:
 762                 gain_automation_style_button.set_label  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 763                 break;
 764         }
 765 }
 766
 767 void
 768 GainMeterBase::gain_automation_state_changed ()
 769 {
 770         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 771
 772         bool x;
 773
 774         switch (_width) {
 775         case Wide:
 776                 gain_automation_state_button.set_label (astate_string(_amp->gain_control()->alist()->automation_state()));
 777                 break;
 778         case Narrow:
 779                 gain_automation_state_button.set_label (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 780                 break;
 781         }
 782
 783         x = (_amp->gain_control()->alist()->automation_state() != Off);
 784
 785         if (gain_automation_state_button.get_active() != x) {
 786                 ignore_toggle = true;
 787                 gain_automation_state_button.set_active (x);
 788                 ignore_toggle = false;
 789         }
 790
 791         update_gain_sensitive ();
 792
 793         /* start watching automation so that things move */
 794
 795         gain_watching.disconnect();
 796
 797         if (x) {
 798                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 799         }
 800 }
 801
 802 void
 803 GainMeterBase::update_meters()
 804 {
 805         char buf[32];
 806         float mpeak = level_meter->update_meters();
 807
 808         if (mpeak > max_peak) {
 809                 max_peak = mpeak;
 810                 if (mpeak <= -200.0f) {
 811                         peak_display.set_label (_("-inf"));
 812                 } else {
 813                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 814                         peak_display.set_label (buf);
 815                 }
 816
 817                 if (mpeak >= 0.0f) {
 818                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 819                 }
 820         }
 821 }
 822
 823 void GainMeterBase::color_handler(bool dpi)
 824 {
 825         color_changed = true;
 826         dpi_changed = (dpi) ? true : false;
 827         setup_meters();
 828 }
 829
 830 void
 831 GainMeterBase::set_width (Width w, int len)
 832 {
 833         _width = w;
 834         level_meter->setup_meters (len);
 835 }
 836
 837
 838 void
 839 GainMeterBase::on_theme_changed()
 840 {
 841         style_changed = true;
 842 }
 843
 844 GainMeter::GainMeter (Session* s, int fader_length)
 845         : GainMeterBase (s, slider, false, fader_length)
 846         , gain_display_box(true, 0)
 847         , hbox(true, 2)
 848 {
 849         gain_display_box.pack_start (gain_display, true, true);
 850
 851         meter_metric_area.set_name ("AudioTrackMetrics");
 852         set_size_request_to_display_given_text (meter_metric_area, "-127", 0, 0);
 853
 854         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 855         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 856
 857         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 858         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 859
 860         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 861         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 862
 863         gain_automation_state_button.set_size_request(15, 15);
 864         gain_automation_style_button.set_size_request(15, 15);
 865
 866         fader_vbox = manage (new Gtk::VBox());
 867         fader_vbox->set_spacing (0);
 868         fader_vbox->pack_start (*gain_slider, true, true);
 869
 870         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 871         fader_alignment.add (*fader_vbox);
 872
 873         hbox.pack_start (fader_alignment, true, true);
 874
 875         set_spacing (2);
 876
 877         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 878         pack_start (hbox, Gtk::PACK_SHRINK);
 879
 880         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 881         meter_alignment.add (*level_meter);
 882
 883         meter_metric_area.signal_expose_event().connect (
 884                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 885 }
 886
 887 void
 888 GainMeter::set_controls (boost::shared_ptr<Route> r,
 889                          boost::shared_ptr<PeakMeter> meter,
 890                          boost::shared_ptr<Amp> amp)
 891 {
 892         if (meter_alignment.get_parent()) {
 893                 hbox.remove (meter_alignment);
 894         }
 895
 896         if (peak_display.get_parent()) {
 897                 gain_display_box.remove (peak_display);
 898         }
 899
 900         if (gain_automation_state_button.get_parent()) {
 901                 fader_vbox->remove (gain_automation_state_button);
 902         }
 903
 904         GainMeterBase::set_controls (r, meter, amp);
 905
 906         if (_meter) {
 907                 _meter->ConfigurationChanged.connect (
 908                         model_connections, invalidator (*this), ui_bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 909                         );
 910
 911                 meter_configuration_changed (_meter->input_streams ());
 912         }
 913
 914
 915         /*
 916            if we have a non-hidden route (ie. we're not the click or the auditioner),
 917            pack some route-dependent stuff.
 918         */
 919
 920         gain_display_box.pack_end (peak_display, true, true);
 921         hbox.pack_start (meter_alignment, true, true);
 922
 923         if (r && !r->is_hidden()) {
 924                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 925         }
 926
 927         setup_meters ();
 928         hbox.show_all ();
 929 }
 930
 931 int
 932 GainMeter::get_gm_width ()
 933 {
 934         Gtk::Requisition sz;
 935         hbox.size_request (sz);
 936         return sz.width;
 937 }
 938
 939 cairo_pattern_t*
 940 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 941 {
 942         Glib::RefPtr<Gdk::Window> win (w.get_window());
 943
 944         gint width, height;
 945         win->get_size (width, height);
 946
 947         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 948         cairo_t* cr = cairo_create (surface);
 949         PangoLayout* layout = gtk_widget_create_pango_layout (w.gobj(), "");
 950
 951         cairo_move_to (cr, 0, 0);
 952         cairo_rectangle (cr, 0, 0, width, height);
 953         {
 954                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 955                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 956         }
 957         cairo_fill (cr);
 958
 959         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 960
 961                 Gdk::Color c;
 962
 963                 if (types.size() > 1) {
 964                         /* we're overlaying more than 1 set of marks, so use different colours */
 965                         Gdk::Color c;
 966                         switch (*i) {
 967                         case DataType::AUDIO:
 968                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 969                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 970                                 break;
 971                         case DataType::MIDI:
 972                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 973                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 974                                 break;
 975                         }
 976                 } else {
 977                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 978                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 979                 }
 980
 981                 vector<int> points;
 982
 983                 switch (*i) {
 984                 case DataType::AUDIO:
 985                         points.push_back (-50);
 986                         points.push_back (-40);
 987                         points.push_back (-30);
 988                         points.push_back (-20);
 989                         points.push_back (-10);
 990                         points.push_back (-3);
 991                         points.push_back (0);
 992                         points.push_back (4);
 993                         break;
 994
 995                 case DataType::MIDI:
 996                         points.push_back (0);
 997                         if (types.size() == 1) {
 998                                 points.push_back (32);
 999                         } else {
1000                                 /* tweak so as not to overlay the -30dB mark */
1001                                 points.push_back (48);
1002                         }
1003                         points.push_back (64);
1004                         points.push_back (96);
1005                         points.push_back (127);
1006                         break;
1007                 }
1008
1009                 char buf[32];
1010
1011                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
1012
1013                         float fraction = 0;
1014                         switch (*i) {
1015                         case DataType::AUDIO:
1016                                 fraction = log_meter (*j);
1017                                 break;
1018                         case DataType::MIDI:
1019                                 fraction = *j / 127.0;
1020                                 break;
1021                         }
1022
1023                         gint const pos = height - (gint) floor (height * fraction);
1024
1025                         cairo_set_line_width (cr, 1.0);
1026                         cairo_move_to (cr, 0, pos);
1027                         cairo_line_to (cr, 4, pos);
1028                         cairo_stroke (cr);
1029
1030                         snprintf (buf, sizeof (buf), "%d", abs (*j));
1031                         pango_layout_set_text (layout, buf, strlen (buf));
1032
1033                         /* we want logical extents, not ink extents here */
1034
1035                         int tw, th;
1036                         pango_layout_get_pixel_size (layout, &tw, &th);
1037
1038                         int p = pos - (th / 2);
1039                         p = min (p, height - th);
1040                         p = max (p, 0);
1041
1042                         cairo_move_to (cr, 6, p);
1043                         pango_cairo_show_layout (cr, layout);
1044                 }
1045         }
1046
1047         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1048         MetricPatterns::iterator p;
1049
1050         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
1051                 cairo_pattern_destroy (p->second);
1052         }
1053
1054         metric_patterns[w.get_name()] = pattern;
1055
1056         cairo_destroy (cr);
1057         cairo_surface_destroy (surface);
1058         g_object_unref (layout);
1059
1060         return pattern;
1061 }
1062
1063 gint
1064 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1065 {
1066         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1067         cairo_t* cr;
1068
1069         cr = gdk_cairo_create (win->gobj());
1070
1071         /* clip to expose area */
1072
1073         gdk_cairo_rectangle (cr, &ev->area);
1074         cairo_clip (cr);
1075
1076         cairo_pattern_t* pattern;
1077         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
1078
1079         if (i == metric_patterns.end() || style_changed || dpi_changed) {
1080                 pattern = render_metrics (meter_metric_area, _types);
1081         } else {
1082                 pattern = i->second;
1083         }
1084
1085         cairo_move_to (cr, 0, 0);
1086         cairo_set_source (cr, pattern);
1087
1088         gint width, height;
1089         win->get_size (width, height);
1090
1091         cairo_rectangle (cr, 0, 0, width, height);
1092         cairo_fill (cr);
1093
1094         style_changed = false;
1095         dpi_changed = false;
1096
1097         cairo_destroy (cr);
1098
1099         return true;
1100 }
1101
1102 boost::shared_ptr<PBD::Controllable>
1103 GainMeterBase::get_controllable()
1104 {
1105         if (_amp) {
1106                 return _amp->gain_control();
1107         } else {
1108                 return boost::shared_ptr<PBD::Controllable>();
1109         }
1110 }
1111
1112 bool
1113 GainMeterBase::level_meter_button_press (GdkEventButton* ev)
1114 {
1115         return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
1116 }
1117
1118 void
1119 GainMeter::meter_configuration_changed (ChanCount c)
1120 {
1121         _types.clear ();
1122
1123         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1124                 if (c.get (*i) > 0) {
1125                         _types.push_back (*i);
1126                 }
1127         }
1128
1129         style_changed = true;
1130         meter_metric_area.queue_draw ();
1131 }
1132