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/io.h>
  23 #include <ardour/route.h>
  24 #include <ardour/route_group.h>
  25 #include <ardour/session.h>
  26 #include <ardour/session_route.h>
  27 #include <ardour/dB.h>
  28
  29 #include <gtkmm/style.h>
  30 #include <gdkmm/color.h>
  31 #include <gtkmm2ext/utils.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/stop_signal.h>
  34 #include <gtkmm2ext/barcontroller.h>
  35 #include <gtkmm2ext/gtk_ui.h>
  36 #include <midi++/manager.h>
  37 #include <pbd/fastlog.h>
  38 #include <pbd/stacktrace.h>
  39
  40 #include "ardour_ui.h"
  41 #include "gain_meter.h"
  42 #include "utils.h"
  43 #include "logmeter.h"
  44 #include "gui_thread.h"
  45 #include "keyboard.h"
  46 #include "public_editor.h"
  47
  48 #include <ardour/session.h>
  49 #include <ardour/route.h>
  50 #include <ardour/meter.h>
  51
  52 #include "i18n.h"
  53
  54 using namespace ARDOUR;
  55 using namespace PBD;
  56 using namespace Gtkmm2ext;
  57 using namespace Gtk;
  58 using namespace sigc;
  59 using namespace std;
  60
  61 sigc::signal<void> GainMeterBase::ResetAllPeakDisplays;
  62 sigc::signal<void,RouteGroup*> GainMeterBase::ResetGroupPeakDisplays;
  63
  64 map<string,Glib::RefPtr<Gdk::Pixmap> > GainMeter::metric_pixmaps;
  65 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  66
  67
  68 void
  69 GainMeter::setup_slider_pix ()
  70 {
  71         if ((slider = ::get_icon ("fader_belt")) == 0) {
  72                 throw failed_constructor();
  73         }
  74 }
  75
  76 GainMeterBase::GainMeterBase (Session& s,
  77                               const Glib::RefPtr<Gdk::Pixbuf>& pix,
  78                               bool horizontal)
  79         : _session (s),
  80           // 0.781787 is the value needed for gain to be set to 0.
  81           gain_adjustment (0.781787, 0.0, 1.0, 0.01, 0.1),
  82           gain_automation_style_button (""),
  83           gain_automation_state_button ("")
  84
  85 {
  86         using namespace Menu_Helpers;
  87
  88         ignore_toggle = false;
  89         meter_menu = 0;
  90         next_release_selects = false;
  91         style_changed = true;
  92         _width = Wide;
  93
  94         if (horizontal) {
  95                 gain_slider = manage (new HSliderController (pix,
  96                                                              &gain_adjustment,
  97                                                              false));
  98         } else {
  99                 gain_slider = manage (new VSliderController (pix,
 100                                                              &gain_adjustment,
 101                                                              false));
 102         }
 103
 104         level_meter = new LevelMeter(_session);
 105
 106         gain_slider->signal_button_press_event().connect (mem_fun(*this, &GainMeter::start_gain_touch));
 107         gain_slider->signal_button_release_event().connect (mem_fun(*this, &GainMeter::end_gain_touch));
 108         gain_slider->set_name ("GainFader");
 109
 110         gain_display.set_name ("MixerStripGainDisplay");
 111         gain_display.set_has_frame (false);
 112         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 113         gain_display.signal_activate().connect (mem_fun (*this, &GainMeter::gain_activated));
 114         gain_display.signal_focus_in_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 115         gain_display.signal_focus_out_event().connect (mem_fun (*this, &GainMeter::gain_focused), false);
 116
 117         peak_display.set_name ("MixerStripPeakDisplay");
 118 //      peak_display.set_has_frame (false);
 119 //      peak_display.set_editable (false);
 120         set_size_request_to_display_given_text  (peak_display, "-80.g", 2, 6); /* note the descender */
 121         max_peak = minus_infinity();
 122         peak_display.set_label (_("-inf"));
 123         peak_display.unset_flags (Gtk::CAN_FOCUS);
 124
 125         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 126         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 127
 128         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 129         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 130
 131         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 132         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 133
 134         gain_automation_state_button.set_size_request(15, 15);
 135         gain_automation_style_button.set_size_request(15, 15);
 136
 137         gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 138         gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 139
 140         gain_astate_menu.set_name ("ArdourContextMenu");
 141         gain_astyle_menu.set_name ("ArdourContextMenu");
 142
 143         gain_adjustment.signal_value_changed().connect (mem_fun(*this, &GainMeterBase::gain_adjusted));
 144         peak_display.signal_button_release_event().connect (mem_fun(*this, &GainMeterBase::peak_button_release), false);
 145         gain_display.signal_key_press_event().connect (mem_fun(*this, &GainMeterBase::gain_key_press), false);
 146
 147         ResetAllPeakDisplays.connect (mem_fun(*this, &GainMeterBase::reset_peak_display));
 148         ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeterBase::reset_group_peak_display));
 149
 150         UI::instance()->theme_changed.connect (mem_fun(*this, &GainMeterBase::on_theme_changed));
 151         ColorsChanged.connect (bind(mem_fun (*this, &GainMeterBase::color_handler), false));
 152         DPIReset.connect (bind(mem_fun (*this, &GainMeterBase::color_handler), true));
 153 }
 154
 155 GainMeterBase::~GainMeterBase ()
 156 {
 157         delete meter_menu;
 158         delete level_meter;
 159 }
 160
 161 void
 162 GainMeterBase::set_io (boost::shared_ptr<IO> io)
 163 {
 164         cerr << this << " Clear all connections\n";
 165
 166         connections.clear ();
 167
 168         _io = io;
 169
 170         level_meter->set_io (_io);
 171         gain_slider->set_controllable (_io->gain_control());
 172
 173         boost::shared_ptr<Route> r;
 174
 175         if ((r = boost::dynamic_pointer_cast<Route> (_io)) != 0) {
 176
 177                 if (!r->is_hidden()) {
 178
 179                         using namespace Menu_Helpers;
 180
 181                         gain_astate_menu.items().clear ();
 182
 183                         gain_astate_menu.items().push_back (MenuElem (_("Manual"),
 184                                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 185                                                                             Evoral::Parameter(GainAutomation), (AutoState) Off)));
 186                         gain_astate_menu.items().push_back (MenuElem (_("Play"),
 187                                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 188                                                                             Evoral::Parameter(GainAutomation), (AutoState) Play)));
 189                         gain_astate_menu.items().push_back (MenuElem (_("Write"),
 190                                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 191                                                                             Evoral::Parameter(GainAutomation), (AutoState) Write)));
 192                         gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 193                                                                       bind (mem_fun (*_io, &IO::set_parameter_automation_state),
 194                                                                             Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 195
 196                         connections.push_back (gain_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 197                         connections.push_back (gain_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 198
 199                         connections.push_back (r->gain_control()->alist()->automation_state_changed.connect (mem_fun(*this, &GainMeter::gain_automation_state_changed)));
 200                         connections.push_back (r->gain_control()->alist()->automation_style_changed.connect (mem_fun(*this, &GainMeter::gain_automation_style_changed)));
 201
 202                         gain_automation_state_changed ();
 203                 }
 204         }
 205
 206         cerr << "Connect " << this << " to gain change for " << _io->name() << endl;
 207
 208         connections.push_back (_io->gain_control()->Changed.connect (mem_fun(*this, &GainMeterBase::gain_changed)));
 209
 210         gain_changed ();
 211         show_gain ();
 212         update_gain_sensitive ();
 213 }
 214
 215 void
 216 GainMeterBase::hide_all_meters ()
 217 {
 218         level_meter->hide_meters();
 219 }
 220
 221 void
 222 GainMeter::hide_all_meters ()
 223 {
 224         bool remove_metric_area = false;
 225
 226         GainMeterBase::hide_all_meters ();
 227
 228         if (remove_metric_area) {
 229                 if (meter_metric_area.get_parent()) {
 230                         level_meter->remove (meter_metric_area);
 231                 }
 232         }
 233 }
 234
 235 void
 236 GainMeterBase::setup_meters (int len)
 237 {
 238         level_meter->setup_meters(len, 5);
 239 }
 240
 241 void
 242 GainMeter::setup_meters (int len)
 243 {
 244         if (!meter_metric_area.get_parent()) {
 245                 level_meter->pack_end (meter_metric_area, false, false);
 246                 meter_metric_area.show_all ();
 247         }
 248         GainMeterBase::setup_meters (len);
 249 }
 250
 251 bool
 252 GainMeterBase::gain_key_press (GdkEventKey* ev)
 253 {
 254         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 255                 /* drop through to normal handling */
 256                 return false;
 257         }
 258         /* illegal key for gain entry */
 259         return true;
 260 }
 261
 262 bool
 263 GainMeterBase::peak_button_release (GdkEventButton* ev)
 264 {
 265         /* reset peak label */
 266
 267         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 268                 ResetAllPeakDisplays ();
 269         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 270                 boost::shared_ptr<Route> r;
 271
 272                 if ((r = boost::dynamic_pointer_cast<Route> (_io)) != 0) {
 273                         ResetGroupPeakDisplays (r->mix_group());
 274                 }
 275         } else {
 276                 reset_peak_display ();
 277         }
 278
 279         return true;
 280 }
 281
 282 void
 283 GainMeterBase::reset_peak_display ()
 284 {
 285         boost::shared_ptr<Route> r;
 286
 287         if ((r = boost::dynamic_pointer_cast<Route> (_io)) != 0) {
 288                 r->peak_meter().reset_max();
 289         }
 290
 291         level_meter->clear_meters();
 292         max_peak = -INFINITY;
 293         peak_display.set_label (_("-Inf"));
 294         peak_display.set_name ("MixerStripPeakDisplay");
 295 }
 296
 297 void
 298 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 299 {
 300         boost::shared_ptr<Route> r;
 301
 302         if ((r = boost::dynamic_pointer_cast<Route> (_io)) != 0) {
 303                 if (group == r->mix_group()) {
 304                         reset_peak_display ();
 305                 }
 306         }
 307 }
 308
 309 void
 310 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 311 {
 312         using namespace Menu_Helpers;
 313
 314         if (meter_menu == 0) {
 315                 meter_menu = new Gtk::Menu;
 316                 MenuList& items = meter_menu->items();
 317
 318                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 319                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 320                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 321                 items.push_back (SeparatorElem());
 322                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 323                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 324                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 325         }
 326
 327         meter_menu->popup (1, ev->time);
 328 }
 329
 330 bool
 331 GainMeterBase::gain_focused (GdkEventFocus* ev)
 332 {
 333         if (ev->in) {
 334                 gain_display.select_region (0, -1);
 335         } else {
 336                 gain_display.select_region (0, 0);
 337         }
 338         return false;
 339 }
 340
 341 void
 342 GainMeterBase::gain_activated ()
 343 {
 344         float f;
 345
 346         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 347
 348                 /* clamp to displayable values */
 349
 350                 f = min (f, 6.0f);
 351
 352                 _io->gain_control()->set_value (dB_to_coefficient(f));
 353
 354                 if (gain_display.has_focus()) {
 355                         PublicEditor::instance().reset_focus();
 356                 }
 357         }
 358 }
 359
 360 void
 361 GainMeterBase::show_gain ()
 362 {
 363         char buf[32];
 364
 365         float v = gain_adjustment.get_value();
 366
 367         if (v == 0.0) {
 368                 strcpy (buf, _("-inf"));
 369         } else {
 370                 snprintf (buf, 32, "%.1f", coefficient_to_dB (slider_position_to_gain (v)));
 371         }
 372
 373         gain_display.set_text (buf);
 374 }
 375
 376 void
 377 GainMeterBase::gain_adjusted ()
 378 {
 379         cerr << this << " for " << _io->name() << " GAIN ADJUSTED\n";
 380         if (!ignore_toggle) {
 381                 cerr << "Set GC\n";
 382                 _io->gain_control()->set_value (slider_position_to_gain (gain_adjustment.get_value()));
 383                 cerr << "Set GC OUT\n";
 384         }
 385         show_gain ();
 386 }
 387
 388 void
 389 GainMeterBase::effective_gain_display ()
 390 {
 391         gfloat value = gain_to_slider_position (_io->effective_gain());
 392
 393         cerr << this << " for " << _io->name() << " EGAIN = " << value << " AGAIN = " << gain_adjustment.get_value () << endl;
 394         // stacktrace (cerr, 20);
 395
 396         if (gain_adjustment.get_value() != value) {
 397                 ignore_toggle = true;
 398                 gain_adjustment.set_value (value);
 399                 ignore_toggle = false;
 400         }
 401 }
 402
 403 void
 404 GainMeterBase::gain_changed ()
 405 {
 406         Gtkmm2ext::UI::instance()->call_slot (mem_fun(*this, &GainMeterBase::effective_gain_display));
 407 }
 408
 409 void
 410 GainMeterBase::set_meter_strip_name (const char * name)
 411 {
 412         meter_metric_area.set_name (name);
 413 }
 414
 415 void
 416 GainMeterBase::set_fader_name (const char * name)
 417 {
 418         gain_slider->set_name (name);
 419 }
 420
 421 void
 422 GainMeterBase::update_gain_sensitive ()
 423 {
 424         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (
 425                         !(_io->gain_control()->alist()->automation_state() & Play));
 426 }
 427
 428
 429 static MeterPoint
 430 next_meter_point (MeterPoint mp)
 431 {
 432         switch (mp) {
 433         case MeterInput:
 434                 return MeterPreFader;
 435                 break;
 436
 437         case MeterPreFader:
 438                 return MeterPostFader;
 439                 break;
 440
 441         case MeterPostFader:
 442                 return MeterInput;
 443                 break;
 444         }
 445         /*NOTREACHED*/
 446         return MeterInput;
 447 }
 448
 449 gint
 450 GainMeterBase::meter_press(GdkEventButton* ev)
 451 {
 452         boost::shared_ptr<Route> _route;
 453
 454         wait_for_release = false;
 455
 456         if ((_route = boost::dynamic_pointer_cast<Route>(_io)) == 0) {
 457                 return FALSE;
 458         }
 459
 460         if (!ignore_toggle) {
 461
 462                 if (Keyboard::is_context_menu_event (ev)) {
 463
 464                         // no menu at this time.
 465
 466                 } else {
 467
 468                         if (Keyboard::is_button2_event(ev)) {
 469
 470                                 // Primary-button2 click is the midi binding click
 471                                 // button2-click is "momentary"
 472
 473                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 474                                         wait_for_release = true;
 475                                         old_meter_point = _route->meter_point ();
 476                                 }
 477                         }
 478
 479                         if (ev->button == 1 || Keyboard::is_button2_event (ev)) {
 480
 481                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 482
 483                                         /* Primary+Tertiary-click applies change to all routes */
 484
 485                                         _session.begin_reversible_command (_("meter point change"));
 486                                         Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 487                                         _session.foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 488                                         cmd->mark();
 489                                         _session.add_command (cmd);
 490                                         _session.commit_reversible_command ();
 491
 492
 493                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 494
 495                                         /* Primary-click: solo mix group.
 496                                            NOTE: Primary-button2 is MIDI learn.
 497                                         */
 498
 499                                         if (ev->button == 1) {
 500                                                 _session.begin_reversible_command (_("meter point change"));
 501                                                 Session::GlobalMeteringStateCommand *cmd = new Session::GlobalMeteringStateCommand (_session, this);
 502                                                 set_mix_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 503                                                 cmd->mark();
 504                                                 _session.add_command (cmd);
 505                                                 _session.commit_reversible_command ();
 506                                         }
 507
 508                                 } else {
 509
 510                                         /* click: change just this route */
 511
 512                                         // XXX no undo yet
 513
 514                                         _route->set_meter_point (next_meter_point (_route->meter_point()), this);
 515                                 }
 516                         }
 517                 }
 518         }
 519
 520         return true;
 521
 522 }
 523
 524 gint
 525 GainMeterBase::meter_release(GdkEventButton* ev)
 526 {
 527         if(!ignore_toggle){
 528                 if (wait_for_release){
 529                         wait_for_release = false;
 530
 531                         boost::shared_ptr<Route> r;
 532
 533                         if ((r = boost::dynamic_pointer_cast<Route>(_io)) != 0) {
 534                                 set_meter_point (*r, old_meter_point);
 535                         }
 536                 }
 537         }
 538
 539         return true;
 540 }
 541
 542 void
 543 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 544 {
 545         route.set_meter_point (mp, this);
 546 }
 547
 548 void
 549 GainMeterBase::set_mix_group_meter_point (Route& route, MeterPoint mp)
 550 {
 551         RouteGroup* mix_group;
 552
 553         if((mix_group = route.mix_group()) != 0){
 554                 mix_group->apply (&Route::set_meter_point, mp, this);
 555         } else {
 556                 route.set_meter_point (mp, this);
 557         }
 558 }
 559
 560 void
 561 GainMeterBase::meter_point_clicked ()
 562 {
 563         boost::shared_ptr<Route> r;
 564
 565         if ((r = boost::dynamic_pointer_cast<Route> (_io)) != 0) {
 566                 /* WHAT? */
 567         }
 568 }
 569
 570 gint
 571 GainMeterBase::start_gain_touch (GdkEventButton* ev)
 572 {
 573         _io->gain_control()->alist()->start_touch ();
 574         return FALSE;
 575 }
 576
 577 gint
 578 GainMeterBase::end_gain_touch (GdkEventButton* ev)
 579 {
 580         _io->gain_control()->alist()->stop_touch ();
 581         return FALSE;
 582 }
 583
 584 gint
 585 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 586 {
 587         if (ev->type == GDK_BUTTON_RELEASE) {
 588                 return TRUE;
 589         }
 590
 591         switch (ev->button) {
 592                 case 1:
 593                         gain_astate_menu.popup (1, ev->time);
 594                         break;
 595                 default:
 596                         break;
 597         }
 598
 599         return TRUE;
 600 }
 601
 602 gint
 603 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 604 {
 605         if (ev->type == GDK_BUTTON_RELEASE) {
 606                 return TRUE;
 607         }
 608
 609         switch (ev->button) {
 610         case 1:
 611                 gain_astyle_menu.popup (1, ev->time);
 612                 break;
 613         default:
 614                 break;
 615         }
 616         return TRUE;
 617 }
 618
 619 string
 620 GainMeterBase::astate_string (AutoState state)
 621 {
 622         return _astate_string (state, false);
 623 }
 624
 625 string
 626 GainMeterBase::short_astate_string (AutoState state)
 627 {
 628         return _astate_string (state, true);
 629 }
 630
 631 string
 632 GainMeterBase::_astate_string (AutoState state, bool shrt)
 633 {
 634         string sstr;
 635
 636         switch (state) {
 637         case Off:
 638                 sstr = (shrt ? "M" : _("M"));
 639                 break;
 640         case Play:
 641                 sstr = (shrt ? "P" : _("P"));
 642                 break;
 643         case Touch:
 644                 sstr = (shrt ? "T" : _("T"));
 645                 break;
 646         case Write:
 647                 sstr = (shrt ? "W" : _("W"));
 648                 break;
 649         }
 650
 651         return sstr;
 652 }
 653
 654 string
 655 GainMeterBase::astyle_string (AutoStyle style)
 656 {
 657         return _astyle_string (style, false);
 658 }
 659
 660 string
 661 GainMeterBase::short_astyle_string (AutoStyle style)
 662 {
 663         return _astyle_string (style, true);
 664 }
 665
 666 string
 667 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 668 {
 669         if (style & Trim) {
 670                 return _("Trim");
 671         } else {
 672                 /* XXX it might different in different languages */
 673
 674                 return (shrt ? _("Abs") : _("Abs"));
 675         }
 676 }
 677
 678 void
 679 GainMeterBase::gain_automation_style_changed ()
 680 {
 681         switch (_width) {
 682         case Wide:
 683                 gain_automation_style_button.set_label (astyle_string(_io->gain_control()->alist()->automation_style()));
 684                 break;
 685         case Narrow:
 686                 gain_automation_style_button.set_label  (short_astyle_string(_io->gain_control()->alist()->automation_style()));
 687                 break;
 688         }
 689 }
 690
 691 void
 692 GainMeterBase::gain_automation_state_changed ()
 693 {
 694         ENSURE_GUI_THREAD(mem_fun(*this, &GainMeterBase::gain_automation_state_changed));
 695
 696         bool x;
 697
 698         switch (_width) {
 699         case Wide:
 700                 gain_automation_state_button.set_label (astate_string(_io->gain_control()->alist()->automation_state()));
 701                 break;
 702         case Narrow:
 703                 gain_automation_state_button.set_label (short_astate_string(_io->gain_control()->alist()->automation_state()));
 704                 break;
 705         }
 706
 707         x = (_io->gain_control()->alist()->automation_state() != Off);
 708
 709         if (gain_automation_state_button.get_active() != x) {
 710                 ignore_toggle = true;
 711                 gain_automation_state_button.set_active (x);
 712                 ignore_toggle = false;
 713         }
 714
 715         update_gain_sensitive ();
 716
 717         /* start watching automation so that things move */
 718
 719         gain_watching.disconnect();
 720
 721         if (x) {
 722                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &GainMeterBase::effective_gain_display));
 723         }
 724 }
 725
 726 void
 727 GainMeterBase::update_meters()
 728 {
 729         char buf[32];
 730         float mpeak = level_meter->update_meters();
 731
 732         if (mpeak > max_peak) {
 733                 max_peak = mpeak;
 734                 if (mpeak <= -200.0f) {
 735                         peak_display.set_label (_("-inf"));
 736                 } else {
 737                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 738                         peak_display.set_label (buf);
 739                 }
 740
 741                 if (mpeak >= 0.0f) {
 742                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 743                 }
 744         }
 745 }
 746
 747 void GainMeterBase::color_handler(bool dpi)
 748 {
 749         color_changed = true;
 750         dpi_changed = (dpi) ? true : false;
 751         setup_meters();
 752 }
 753
 754 void
 755 GainMeterBase::set_width (Width w, int len)
 756 {
 757         _width = w;
 758         level_meter->setup_meters (len);
 759 }
 760
 761
 762 void
 763 GainMeterBase::on_theme_changed()
 764 {
 765         style_changed = true;
 766 }
 767
 768 GainMeter::GainMeter (Session& s)
 769         : GainMeterBase (s, slider, false)
 770 {
 771         gain_display_box.set_homogeneous (true);
 772         gain_display_box.set_spacing (2);
 773         gain_display_box.pack_start (gain_display, true, true);
 774
 775         meter_metric_area.set_name ("AudioTrackMetrics");
 776         set_size_request_to_display_given_text (meter_metric_area, "-50", 0, 0);
 777
 778         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 779         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 780
 781         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_state_button, _("Fader automation mode"));
 782         ARDOUR_UI::instance()->tooltips().set_tip (gain_automation_style_button, _("Fader automation type"));
 783
 784         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 785         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 786
 787         gain_automation_state_button.set_size_request(15, 15);
 788         gain_automation_style_button.set_size_request(15, 15);
 789
 790         HBox* fader_centering_box = manage (new HBox);
 791         fader_centering_box->pack_start (*gain_slider, true, false);
 792
 793         fader_vbox = manage (new Gtk::VBox());
 794         fader_vbox->set_spacing (0);
 795         fader_vbox->pack_start (*fader_centering_box, false, false, 0);
 796
 797         hbox.set_spacing (2);
 798         hbox.pack_start (*fader_vbox, true, true);
 799
 800         set_spacing (2);
 801
 802         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 803         pack_start (hbox, Gtk::PACK_SHRINK);
 804
 805         meter_metric_area.signal_expose_event().connect (mem_fun(*this, &GainMeter::meter_metrics_expose));
 806 }
 807
 808 void
 809 GainMeter::set_io (boost::shared_ptr<IO> io)
 810 {
 811         if (level_meter->get_parent()) {
 812                 hbox.remove (*level_meter);
 813         }
 814
 815         if (peak_display.get_parent()) {
 816                 gain_display_box.remove (peak_display);
 817         }
 818
 819         if (gain_automation_state_button.get_parent()) {
 820                 fader_vbox->remove (gain_automation_state_button);
 821         }
 822
 823         GainMeterBase::set_io (io);
 824
 825         boost::shared_ptr<Route> r;
 826
 827         if ((r = boost::dynamic_pointer_cast<Route> (_io)) != 0) {
 828
 829                 /*
 830                    if we have a non-hidden route (ie. we're not the click or the auditioner),
 831                    pack some route-dependent stuff.
 832                 */
 833
 834                 gain_display_box.pack_end (peak_display, true, true);
 835                 hbox.pack_end (*level_meter, true, true);
 836
 837                 if (!r->is_hidden()) {
 838                         fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 839                 }
 840         }
 841 }
 842
 843 int
 844 GainMeter::get_gm_width ()
 845 {
 846         Gtk::Requisition sz;
 847         hbox.size_request (sz);
 848         return sz.width;
 849 }
 850
 851 Glib::RefPtr<Gdk::Pixmap>
 852 GainMeter::render_metrics (Gtk::Widget& w)
 853 {
 854         Glib::RefPtr<Gdk::Window> win (w.get_window());
 855         Glib::RefPtr<Gdk::GC> fg_gc (w.get_style()->get_fg_gc (Gtk::STATE_NORMAL));
 856         Glib::RefPtr<Gdk::GC> bg_gc (w.get_style()->get_bg_gc (Gtk::STATE_NORMAL));
 857         gint width, height;
 858         int  db_points[] = { -50, -40, -20, -30, -10, -3, 0, 4 };
 859         char buf[32];
 860
 861         win->get_size (width, height);
 862
 863         Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (win, width, height);
 864
 865         metric_pixmaps[w.get_name()] = pixmap;
 866
 867         pixmap->draw_rectangle (bg_gc, true, 0, 0, width, height);
 868
 869         Glib::RefPtr<Pango::Layout> layout = w.create_pango_layout("");
 870
 871         for (uint32_t i = 0; i < sizeof (db_points)/sizeof (db_points[0]); ++i) {
 872
 873                 float fraction = log_meter (db_points[i]);
 874                 gint pos = height - (gint) floor (height * fraction);
 875
 876                 snprintf (buf, sizeof (buf), "%d", abs (db_points[i]));
 877
 878                 layout->set_text (buf);
 879
 880                 /* we want logical extents, not ink extents here */
 881
 882                 int width, height;
 883                 layout->get_pixel_size (width, height);
 884
 885                 pixmap->draw_line (fg_gc, 0, pos, 4, pos);
 886                 pixmap->draw_layout (fg_gc, 6, pos - (height/2), layout);
 887         }
 888
 889         return pixmap;
 890 }
 891
 892 gint
 893 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 894 {
 895         static Glib::RefPtr<Gtk::Style> meter_style;
 896         if (style_changed) {
 897                 meter_style = meter_metric_area.get_style();
 898         }
 899         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
 900         Glib::RefPtr<Gdk::GC> bg_gc (meter_style->get_bg_gc (Gtk::STATE_INSENSITIVE));
 901         GdkRectangle base_rect;
 902         GdkRectangle draw_rect;
 903         gint width, height;
 904
 905         win->get_size (width, height);
 906
 907         base_rect.width = width;
 908         base_rect.height = height;
 909         base_rect.x = 0;
 910         base_rect.y = 0;
 911
 912         Glib::RefPtr<Gdk::Pixmap> pixmap;
 913         std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 914
 915         if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
 916                 pixmap = render_metrics (meter_metric_area);
 917         } else {
 918                 pixmap = i->second;
 919         }
 920
 921         gdk_rectangle_intersect (&ev->area, &base_rect, &draw_rect);
 922         win->draw_drawable (bg_gc, pixmap, draw_rect.x, draw_rect.y, draw_rect.x, draw_rect.y, draw_rect.width, draw_rect.height);
 923         style_changed = false;
 924         return true;
 925 }
 926
 927 boost::shared_ptr<PBD::Controllable>
 928 GainMeterBase::get_controllable()
 929 {
 930         return _io->gain_control();
 931 }
 932
 933