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