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