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