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 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  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 (0.781787, 0.0, 1.0, 0.01, 0.1)  // 0.781787 is the value needed for gain to be set to 0.
  83         , gain_automation_style_button ("")
  84         , gain_automation_state_button ("")
  85         , style_changed (false)
  86         , dpi_changed (false)
  87         , _is_midi (false)
  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         gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_press));
 114         gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release));
 115         gain_slider->set_name ("GainFader");
 116
 117         gain_display.set_name ("MixerStripGainDisplay");
 118         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 119         gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
 120         gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 121         gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 122
 123         peak_display.set_name ("MixerStripPeakDisplay");
 124         set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
 125         max_peak = minus_infinity();
 126         peak_display.set_label (_("-inf"));
 127         peak_display.unset_flags (Gtk::CAN_FOCUS);
 128
 129         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 130         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 131
 132         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 133         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 134
 135         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 136         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 137
 138         gain_automation_state_button.set_size_request(15, 15);
 139         gain_automation_style_button.set_size_request(15, 15);
 140
 141         gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 142         gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 143
 144         gain_astate_menu.set_name ("ArdourContextMenu");
 145         gain_astyle_menu.set_name ("ArdourContextMenu");
 146
 147         gain_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
 148         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
 149         gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
 150
 151         ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
 152         ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
 153
 154         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
 155         ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
 156         DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
 157 }
 158
 159 GainMeterBase::~GainMeterBase ()
 160 {
 161         delete meter_menu;
 162         delete level_meter;
 163 }
 164
 165 void
 166 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
 167                              boost::shared_ptr<PeakMeter> pm,
 168                              boost::shared_ptr<Amp> amp)
 169 {
 170         connections.clear ();
 171         model_connections.drop_connections ();
 172
 173         if (!pm && !amp) {
 174                 level_meter->set_meter (0);
 175                 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
 176                 _meter.reset ();
 177                 _amp.reset ();
 178                 _route.reset ();
 179                 return;
 180         }
 181
 182         _meter = pm;
 183         _amp = amp;
 184         _route = r;
 185
 186         level_meter->set_meter (pm.get());
 187         gain_slider->set_controllable (amp->gain_control());
 188
 189         if (!_route || _route->output()->n_ports().n_midi() == 0) {
 190                 _is_midi = false;
 191                 gain_adjustment.set_lower (0.0);
 192                 gain_adjustment.set_upper (1.0);
 193                 gain_adjustment.set_step_increment (0.01);
 194                 gain_adjustment.set_page_increment (0.1);
 195         } else {
 196                 _is_midi = true;
 197                 gain_adjustment.set_lower (0.0);
 198                 gain_adjustment.set_upper (2.0);
 199                 gain_adjustment.set_step_increment (0.05);
 200                 gain_adjustment.set_page_increment (0.1);
 201         }
 202
 203         if (!_route || !_route->is_hidden()) {
 204
 205                 using namespace Menu_Helpers;
 206
 207                 gain_astate_menu.items().clear ();
 208
 209                 gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 210                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 211                                                                     Evoral::Parameter(GainAutomation), (AutoState) Off)));
 212                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 213                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 214                                                                     Evoral::Parameter(GainAutomation), (AutoState) Play)));
 215                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 216                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 217                                                                     Evoral::Parameter(GainAutomation), (AutoState) Write)));
 218                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 219                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 220                                                                     Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 221
 222                 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 223                 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 224
 225                 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
 226
 227                 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
 228                 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
 229
 230                 gain_automation_state_changed ();
 231         }
 232
 233         amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
 234
 235         gain_changed ();
 236         show_gain ();
 237         update_gain_sensitive ();
 238 }
 239
 240 void
 241 GainMeterBase::hide_all_meters ()
 242 {
 243         level_meter->hide_meters();
 244 }
 245
 246 void
 247 GainMeter::hide_all_meters ()
 248 {
 249         bool remove_metric_area = false;
 250
 251         GainMeterBase::hide_all_meters ();
 252
 253         if (remove_metric_area) {
 254                 if (meter_metric_area.get_parent()) {
 255                         level_meter->remove (meter_metric_area);
 256                 }
 257         }
 258 }
 259
 260 void
 261 GainMeterBase::setup_meters (int len)
 262 {
 263         level_meter->setup_meters(len, 5);
 264 }
 265
 266 void
 267 GainMeter::setup_meters (int len)
 268 {
 269         if (!meter_metric_area.get_parent()) {
 270                 level_meter->pack_end (meter_metric_area, false, false);
 271                 meter_metric_area.show_all ();
 272         }
 273         GainMeterBase::setup_meters (len);
 274 }
 275
 276 bool
 277 GainMeterBase::gain_key_press (GdkEventKey* ev)
 278 {
 279         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 280                 /* drop through to normal handling */
 281                 return false;
 282         }
 283         /* illegal key for gain entry */
 284         return true;
 285 }
 286
 287 bool
 288 GainMeterBase::peak_button_release (GdkEventButton* ev)
 289 {
 290         /* reset peak label */
 291
 292         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 293                 ResetAllPeakDisplays ();
 294         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 295                 if (_route) {
 296                         ResetGroupPeakDisplays (_route->route_group());
 297                 }
 298         } else {
 299                 reset_peak_display ();
 300         }
 301
 302         return true;
 303 }
 304
 305 void
 306 GainMeterBase::reset_peak_display ()
 307 {
 308         _meter->reset_max();
 309         level_meter->clear_meters();
 310         max_peak = -INFINITY;
 311         peak_display.set_label (_("-Inf"));
 312         peak_display.set_name ("MixerStripPeakDisplay");
 313 }
 314
 315 void
 316 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 317 {
 318         if (_route && group == _route->route_group()) {
 319                 reset_peak_display ();
 320         }
 321 }
 322
 323 void
 324 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 325 {
 326         using namespace Menu_Helpers;
 327
 328         if (meter_menu == 0) {
 329                 meter_menu = new Gtk::Menu;
 330                 MenuList& items = meter_menu->items();
 331
 332                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 333                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 334                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 335                 items.push_back (SeparatorElem());
 336                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 337                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 338                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 339         }
 340
 341         meter_menu->popup (1, ev->time);
 342 }
 343
 344 bool
 345 GainMeterBase::gain_focused (GdkEventFocus* ev)
 346 {
 347         if (ev->in) {
 348                 gain_display.select_region (0, -1);
 349         } else {
 350                 gain_display.select_region (0, 0);
 351         }
 352         return false;
 353 }
 354
 355 void
 356 GainMeterBase::gain_activated ()
 357 {
 358         float f;
 359
 360         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 361
 362                 /* clamp to displayable values */
 363
 364                 f = min (f, 6.0f);
 365
 366                 _amp->set_gain (dB_to_coefficient(f), this);
 367
 368                 if (gain_display.has_focus()) {
 369                         PublicEditor::instance().reset_focus();
 370                 }
 371         }
 372 }
 373
 374 void
 375 GainMeterBase::show_gain ()
 376 {
 377         char buf[32];
 378
 379         float v = gain_adjustment.get_value();
 380
 381         if (!_is_midi) {
 382                 if (v == 0.0) {
 383                         strcpy (buf, _("-inf"));
 384                 } else {
 385                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain (v)));
 386                 }
 387         } else {
 388                 snprintf (buf, sizeof (buf), "%.1f", v);
 389         }
 390
 391         gain_display.set_text (buf);
 392 }
 393
 394 void
 395 GainMeterBase::gain_adjusted ()
 396 {
 397         if (!ignore_toggle) {
 398                 if (_route && _route->amp() == _amp) {
 399                         if (_is_midi) {
 400                                 _route->set_gain (gain_adjustment.get_value(), this);
 401                         } else {
 402                                 _route->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 403                         }
 404                 } else {
 405                         _amp->set_gain (slider_position_to_gain (gain_adjustment.get_value()), this);
 406                 }
 407         }
 408
 409         show_gain ();
 410 }
 411
 412 void
 413 GainMeterBase::effective_gain_display ()
 414 {
 415         gfloat value;
 416
 417         if (!_route || _route->output()->n_ports().n_midi() == 0) {
 418                 value = gain_to_slider_position (_amp->gain());
 419         } else {
 420                 value = _amp->gain ();
 421         }
 422
 423         //cerr << this << " for " << _io->name() << " EGAIN = " << value
 424         //              << " AGAIN = " << gain_adjustment.get_value () << endl;
 425         // stacktrace (cerr, 20);
 426
 427         if (gain_adjustment.get_value() != value) {
 428                 ignore_toggle = true;
 429                 gain_adjustment.set_value (value);
 430                 ignore_toggle = false;
 431         }
 432 }
 433
 434 void
 435 GainMeterBase::gain_changed ()
 436 {
 437         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 438 }
 439
 440 void
 441 GainMeterBase::set_meter_strip_name (const char * name)
 442 {
 443         meter_metric_area.set_name (name);
 444 }
 445
 446 void
 447 GainMeterBase::set_fader_name (const char * name)
 448 {
 449         uint32_t rgb_active = rgba_from_style (name, 0xff, 0, 0xff, 0, "bg", STATE_ACTIVE, false);
 450         uint32_t rgb_normal = rgba_from_style (name, 0xff, 0xff, 0, 0, "bg", STATE_NORMAL, false);
 451
 452         gain_slider->set_border_colors (rgb_normal, rgb_active);
 453 }
 454
 455 void
 456 GainMeterBase::update_gain_sensitive ()
 457 {
 458         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 459         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 460 }
 461
 462 static MeterPoint
 463 next_meter_point (MeterPoint mp)
 464 {
 465         switch (mp) {
 466         case MeterInput:
 467                 return MeterPreFader;
 468                 break;
 469
 470         case MeterPreFader:
 471                 return MeterPostFader;
 472                 break;
 473
 474         case MeterPostFader:
 475                 return MeterOutput;
 476                 break;
 477
 478         case MeterOutput:
 479                 return MeterCustom;
 480                 break;
 481
 482         case MeterCustom:
 483                 return MeterInput;
 484                 break;
 485         }
 486
 487         /*NOTREACHED*/
 488         return MeterInput;
 489 }
 490
 491 gint
 492 GainMeterBase::meter_press(GdkEventButton* ev)
 493 {
 494         wait_for_release = false;
 495
 496         if (!_route) {
 497                 return FALSE;
 498         }
 499
 500         if (!ignore_toggle) {
 501
 502                 if (Keyboard::is_context_menu_event (ev)) {
 503
 504                         // no menu at this time.
 505
 506                 } else {
 507
 508                         if (Keyboard::is_button2_event(ev)) {
 509
 510                                 // Primary-button2 click is the midi binding click
 511                                 // button2-click is "momentary"
 512
 513                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 514                                         wait_for_release = true;
 515                                         old_meter_point = _route->meter_point ();
 516                                 }
 517                         }
 518
 519                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 520
 521                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 522
 523                                         /* Primary+Tertiary-click applies change to all routes */
 524
 525                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 526
 527
 528                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 529
 530                                         /* Primary-click: solo mix group.
 531                                            NOTE: Primary-button2 is MIDI learn.
 532                                         */
 533
 534                                         if (ev->button == 1) {
 535                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 536                                         }
 537
 538                                 } else {
 539
 540                                         /* click: change just this route */
 541
 542                                         // XXX no undo yet
 543
 544                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 545                                 }
 546                         }
 547                 }
 548         }
 549
 550         return true;
 551
 552 }
 553
 554 gint
 555 GainMeterBase::meter_release(GdkEventButton*)
 556 {
 557         if (!ignore_toggle) {
 558                 if (wait_for_release) {
 559                         wait_for_release = false;
 560
 561                         if (_route) {
 562                                 set_meter_point (*_route, old_meter_point);
 563                         }
 564                 }
 565         }
 566
 567         return true;
 568 }
 569
 570 void
 571 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 572 {
 573         route.set_meter_point (mp);
 574 }
 575
 576 void
 577 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 578 {
 579         RouteGroup* route_group;
 580
 581         if ((route_group = route.route_group ()) != 0) {
 582                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 583         } else {
 584                 route.set_meter_point (mp);
 585         }
 586 }
 587
 588 void
 589 GainMeterBase::meter_point_clicked ()
 590 {
 591         if (_route) {
 592                 /* WHAT? */
 593         }
 594 }
 595
 596 bool
 597 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 598 {
 599         switch (ev->type) {
 600         case GDK_BUTTON_PRESS:
 601                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 602                 break;
 603         default:
 604                 return false;
 605         }
 606
 607         return true;
 608 }
 609
 610 bool
 611 GainMeterBase::gain_slider_button_release (GdkEventButton* ev)
 612 {
 613         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 614         return true;
 615 }
 616
 617 gint
 618 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 619 {
 620         if (ev->type == GDK_BUTTON_RELEASE) {
 621                 return TRUE;
 622         }
 623
 624         switch (ev->button) {
 625                 case 1:
 626                         gain_astate_menu.popup (1, ev->time);
 627                         break;
 628                 default:
 629                         break;
 630         }
 631
 632         return TRUE;
 633 }
 634
 635 gint
 636 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 637 {
 638         if (ev->type == GDK_BUTTON_RELEASE) {
 639                 return TRUE;
 640         }
 641
 642         switch (ev->button) {
 643         case 1:
 644                 gain_astyle_menu.popup (1, ev->time);
 645                 break;
 646         default:
 647                 break;
 648         }
 649         return TRUE;
 650 }
 651
 652 string
 653 GainMeterBase::astate_string (AutoState state)
 654 {
 655         return _astate_string (state, false);
 656 }
 657
 658 string
 659 GainMeterBase::short_astate_string (AutoState state)
 660 {
 661         return _astate_string (state, true);
 662 }
 663
 664 string
 665 GainMeterBase::_astate_string (AutoState state, bool shrt)
 666 {
 667         string sstr;
 668
 669         switch (state) {
 670         case Off:
 671                 sstr = (shrt ? "M" : _("M"));
 672                 break;
 673         case Play:
 674                 sstr = (shrt ? "P" : _("P"));
 675                 break;
 676         case Touch:
 677                 sstr = (shrt ? "T" : _("T"));
 678                 break;
 679         case Write:
 680                 sstr = (shrt ? "W" : _("W"));
 681                 break;
 682         }
 683
 684         return sstr;
 685 }
 686
 687 string
 688 GainMeterBase::astyle_string (AutoStyle style)
 689 {
 690         return _astyle_string (style, false);
 691 }
 692
 693 string
 694 GainMeterBase::short_astyle_string (AutoStyle style)
 695 {
 696         return _astyle_string (style, true);
 697 }
 698
 699 string
 700 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 701 {
 702         if (style & Trim) {
 703                 return _("Trim");
 704         } else {
 705                 /* XXX it might different in different languages */
 706
 707                 return (shrt ? _("Abs") : _("Abs"));
 708         }
 709 }
 710
 711 void
 712 GainMeterBase::gain_automation_style_changed ()
 713 {
 714         switch (_width) {
 715         case Wide:
 716                 gain_automation_style_button.set_label (astyle_string(_amp->gain_control()->alist()->automation_style()));
 717                 break;
 718         case Narrow:
 719                 gain_automation_style_button.set_label  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 720                 break;
 721         }
 722 }
 723
 724 void
 725 GainMeterBase::gain_automation_state_changed ()
 726 {
 727         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 728
 729         bool x;
 730
 731         switch (_width) {
 732         case Wide:
 733                 gain_automation_state_button.set_label (astate_string(_amp->gain_control()->alist()->automation_state()));
 734                 break;
 735         case Narrow:
 736                 gain_automation_state_button.set_label (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 737                 break;
 738         }
 739
 740         x = (_amp->gain_control()->alist()->automation_state() != Off);
 741
 742         if (gain_automation_state_button.get_active() != x) {
 743                 ignore_toggle = true;
 744                 gain_automation_state_button.set_active (x);
 745                 ignore_toggle = false;
 746         }
 747
 748         update_gain_sensitive ();
 749
 750         /* start watching automation so that things move */
 751
 752         gain_watching.disconnect();
 753
 754         if (x) {
 755                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 756         }
 757 }
 758
 759 void
 760 GainMeterBase::update_meters()
 761 {
 762         char buf[32];
 763         float mpeak = level_meter->update_meters();
 764
 765         if (mpeak > max_peak) {
 766                 max_peak = mpeak;
 767                 if (mpeak <= -200.0f) {
 768                         peak_display.set_label (_("-inf"));
 769                 } else {
 770                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 771                         peak_display.set_label (buf);
 772                 }
 773
 774                 if (mpeak >= 0.0f) {
 775                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 776                 }
 777         }
 778 }
 779
 780 void GainMeterBase::color_handler(bool dpi)
 781 {
 782         color_changed = true;
 783         dpi_changed = (dpi) ? true : false;
 784         setup_meters();
 785 }
 786
 787 void
 788 GainMeterBase::set_width (Width w, int len)
 789 {
 790         _width = w;
 791         level_meter->setup_meters (len);
 792 }
 793
 794
 795 void
 796 GainMeterBase::on_theme_changed()
 797 {
 798         style_changed = true;
 799 }
 800
 801 GainMeter::GainMeter (Session* s, int fader_length)
 802         : GainMeterBase (s, slider, false, fader_length)
 803         , gain_display_box(true, 0)
 804         , hbox(true, 2)
 805 {
 806         gain_display_box.pack_start (gain_display, true, true);
 807
 808         meter_metric_area.set_name ("AudioTrackMetrics");
 809         set_size_request_to_display_given_text (meter_metric_area, "-127", 0, 0);
 810
 811         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 812         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 813
 814         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 815         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 816
 817         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 818         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 819
 820         gain_automation_state_button.set_size_request(15, 15);
 821         gain_automation_style_button.set_size_request(15, 15);
 822
 823         fader_vbox = manage (new Gtk::VBox());
 824         fader_vbox->set_spacing (0);
 825         fader_vbox->pack_start (*gain_slider, true, true);
 826
 827         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 828         fader_alignment.add (*fader_vbox);
 829
 830         hbox.pack_start (fader_alignment, true, true);
 831
 832         set_spacing (2);
 833
 834         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 835         pack_start (hbox, Gtk::PACK_SHRINK);
 836
 837         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 838         meter_alignment.add (*level_meter);
 839
 840         meter_metric_area.signal_expose_event().connect (
 841                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 842 }
 843
 844 void
 845 GainMeter::set_controls (boost::shared_ptr<Route> r,
 846                          boost::shared_ptr<PeakMeter> meter,
 847                          boost::shared_ptr<Amp> amp)
 848 {
 849         if (meter_alignment.get_parent()) {
 850                 hbox.remove (meter_alignment);
 851         }
 852
 853         if (peak_display.get_parent()) {
 854                 gain_display_box.remove (peak_display);
 855         }
 856
 857         if (gain_automation_state_button.get_parent()) {
 858                 fader_vbox->remove (gain_automation_state_button);
 859         }
 860
 861         GainMeterBase::set_controls (r, meter, amp);
 862
 863         if (_meter) {
 864                 _meter->ConfigurationChanged.connect (
 865                         model_connections, invalidator (*this), ui_bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 866                         );
 867
 868                 meter_configuration_changed (_meter->input_streams ());
 869         }
 870
 871
 872         /*
 873            if we have a non-hidden route (ie. we're not the click or the auditioner),
 874            pack some route-dependent stuff.
 875         */
 876
 877         gain_display_box.pack_end (peak_display, true, true);
 878         hbox.pack_start (meter_alignment, true, true);
 879
 880         if (r && !r->is_hidden()) {
 881                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 882         }
 883
 884         setup_meters ();
 885         hbox.show_all ();
 886 }
 887
 888 int
 889 GainMeter::get_gm_width ()
 890 {
 891         Gtk::Requisition sz;
 892         hbox.size_request (sz);
 893         return sz.width;
 894 }
 895
 896 Glib::RefPtr<Gdk::Pixmap>
 897 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 898 {
 899         Glib::RefPtr<Gdk::Window> win (w.get_window());
 900         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 901
 902         gint width, height;
 903         win->get_size (width, height);
 904
 905         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 906
 907         metric_pixmaps[w.get_name()] = pixmap;
 908
 909         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 910
 911         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout ("");
 912
 913         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 914
 915                 Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 916
 917                 if (types.size() > 1) {
 918                         /* we're overlaying more than 1 set of marks, so use different colours */
 919                         Gdk::Color c;
 920                         switch (*i) {
 921                         case DataType::AUDIO:
 922                                 c.set_rgb_p (1, 1, 1);
 923                                 break;
 924                         case DataType::MIDI:
 925                                 c.set_rgb_p (0.2, 0.2, 0.5);
 926                                 break;
 927                         }
 928
 929                         fg_gc->set_rgb_fg_color (c);
 930                 }
 931
 932                 vector<int> points;
 933
 934                 switch (*i) {
 935                 case DataType::AUDIO:
 936                         points.push_back (-50);
 937                         points.push_back (-40);
 938                         points.push_back (-30);
 939                         points.push_back (-20);
 940                         points.push_back (-10);
 941                         points.push_back (-3);
 942                         points.push_back (0);
 943                         points.push_back (4);
 944                         break;
 945
 946                 case DataType::MIDI:
 947                         points.push_back (0);
 948                         if (types.size() == 1) {
 949                                 points.push_back (32);
 950                         } else {
 951                                 /* tweak so as not to overlay the -30dB mark */
 952                                 points.push_back (48);
 953                         }
 954                         points.push_back (64);
 955                         points.push_back (96);
 956                         points.push_back (127);
 957                         break;
 958                 }
 959
 960                 char buf[32];
 961
 962                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
 963
 964                         float fraction = 0;
 965                         switch (*i) {
 966                         case DataType::AUDIO:
 967                                 fraction = log_meter (*j);
 968                                 break;
 969                         case DataType::MIDI:
 970                                 fraction = *j / 127.0;
 971                                 break;
 972                         }
 973
 974                         gint const pos = height - (gint) floor (height * fraction);
 975
 976                         snprintf (buf, sizeof (buf), "%d", abs (*j));
 977
 978                         layout->set_text (buf);
 979
 980                         /* we want logical extents, not ink extents here */
 981
 982                         int tw, th;
 983                         layout->get_pixel_size (tw, th);
 984
 985                         pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 986
 987                         int p = pos - (th / 2);
 988                         p = min (p, height - th);
 989                         p = max (p, 0);
 990
 991                         pixmap->draw_layout (fg_gc, 6, p, layout);
 992                 }
 993         }
 994
 995         return pixmap;
 996 }
 997
 998 gint
 999 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1000 {
1001         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1002         Glib::RefPtr<Gdk::GC> bg_gc (meter_metric_area.get_style()->get_bg_gc (Gtk::STATE_INSENSITIVE));
1003         GdkRectangle base_rect;
1004         GdkRectangle draw_rect;
1005         gint width, height;
1006
1007         win->get_size (width, height);
1008
1009         base_rect.width = width;
1010         base_rect.height = height;
1011         base_rect.x = 0;
1012         base_rect.y = 0;
1013
1014         Glib::RefPtr<Gdk::Pixmap> pixmap;
1015         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
1016
1017         if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
1018                 pixmap = render_metrics (meter_metric_area, _types);
1019         } else {
1020                 pixmap = i->second;
1021         }
1022
1023         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
1024         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
1025         style_changed = false;
1026         return true;
1027 }
1028
1029 boost::shared_ptr<PBD::Controllable>
1030 GainMeterBase::get_controllable()
1031 {
1032         if (_amp) {
1033                 return _amp->gain_control();
1034         } else {
1035                 return boost::shared_ptr<PBD::Controllable>();
1036         }
1037 }
1038
1039 void
1040 GainMeter::meter_configuration_changed (ChanCount c)
1041 {
1042         _types.clear ();
1043
1044         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1045                 if (c.get (*i) > 0) {
1046                         _types.push_back (*i);
1047                 }
1048         }
1049
1050         style_changed = true;
1051         meter_metric_area.queue_draw ();
1052 }