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/route_group.h"
  24 #include "ardour/session_route.h"
  25 #include "ardour/dB.h"
  26 #include "ardour/utils.h"
  27
  28 #include <gtkmm/style.h>
  29 #include <gdkmm/color.h>
  30 #include <gtkmm2ext/utils.h>
  31 #include <gtkmm2ext/fastmeter.h>
  32 #include <gtkmm2ext/barcontroller.h>
  33 #include <gtkmm2ext/gtk_ui.h>
  34 #include "midi++/manager.h"
  35 #include "pbd/fastlog.h"
  36 #include "pbd/stacktrace.h"
  37
  38 #include "ardour_ui.h"
  39 #include "gain_meter.h"
  40 #include "global_signals.h"
  41 #include "logmeter.h"
  42 #include "gui_thread.h"
  43 #include "keyboard.h"
  44 #include "public_editor.h"
  45 #include "utils.h"
  46
  47 #include "ardour/session.h"
  48 #include "ardour/route.h"
  49 #include "ardour/meter.h"
  50
  51 #include "i18n.h"
  52
  53 using namespace ARDOUR;
  54 using namespace PBD;
  55 using namespace Gtkmm2ext;
  56 using namespace Gtk;
  57 using namespace std;
  58 using Gtkmm2ext::Keyboard;
  59
  60 sigc::signal<void> GainMeterBase::ResetAllPeakDisplays;
  61 sigc::signal<void,RouteGroup*> GainMeterBase::ResetGroupPeakDisplays;
  62
  63 GainMeter::MetricPatterns GainMeter::metric_patterns;
  64 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider;
  65 Glib::RefPtr<Gdk::Pixbuf> GainMeter::slider_desensitised;
  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         if ((slider_desensitised = ::get_icon ("fader_belt_desensitised")) == 0) {
  76                 throw failed_constructor();
  77         }
  78 }
  79
  80 GainMeterBase::GainMeterBase (Session* s,
  81                               const Glib::RefPtr<Gdk::Pixbuf>& pix,
  82                               const Glib::RefPtr<Gdk::Pixbuf>& pix_desensitised,
  83                               bool horizontal,
  84                               int fader_length)
  85         : gain_adjustment (gain_to_slider_position_with_max (1.0, Config->get_max_gain()), 0.0, 1.0, 0.01, 0.1)
  86         , gain_automation_style_button ("")
  87         , gain_automation_state_button ("")
  88         , style_changed (false)
  89         , dpi_changed (false)
  90         , _data_type (DataType::AUDIO)
  91
  92 {
  93         using namespace Menu_Helpers;
  94
  95         set_session (s);
  96
  97         ignore_toggle = false;
  98         meter_menu = 0;
  99         next_release_selects = false;
 100         _width = Wide;
 101
 102         if (horizontal) {
 103                 gain_slider = manage (new HSliderController (pix,
 104                                                              pix_desensitised,
 105                                                              &gain_adjustment,
 106                                                              fader_length,
 107                                                              false));
 108         } else {
 109                 gain_slider = manage (new VSliderController (pix,
 110                                                              pix_desensitised,
 111                                                              &gain_adjustment,
 112                                                              fader_length,
 113                                                              false));
 114         }
 115
 116         level_meter = new LevelMeter(_session);
 117
 118         level_meter->ButtonPress.connect_same_thread (_level_meter_connection, boost::bind (&GainMeterBase::level_meter_button_press, this, _1));
 119         meter_metric_area.signal_button_press_event().connect (sigc::mem_fun (*this, &GainMeterBase::level_meter_button_press));
 120         meter_metric_area.add_events (Gdk::BUTTON_PRESS_MASK);
 121
 122         gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_press), false);
 123         gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release), false);
 124         gain_slider->set_name ("GainFader");
 125
 126         gain_display.set_name ("MixerStripGainDisplay");
 127         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 128         gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
 129         gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 130         gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 131
 132         peak_display.set_name ("MixerStripPeakDisplay");
 133         set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
 134         max_peak = minus_infinity();
 135         peak_display.set_label (_("-inf"));
 136         peak_display.unset_flags (Gtk::CAN_FOCUS);
 137
 138         gain_automation_style_button.set_name ("mixer strip button");
 139         gain_automation_state_button.set_name ("mixer strip button");
 140
 141         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 142         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 143
 144         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 145         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 146
 147         gain_automation_state_button.set_size_request(15, 15);
 148         gain_automation_style_button.set_size_request(15, 15);
 149
 150         gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 151         gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 152
 153         gain_astate_menu.set_name ("ArdourContextMenu");
 154         gain_astyle_menu.set_name ("ArdourContextMenu");
 155
 156         gain_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
 157         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
 158         gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
 159
 160         ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
 161         ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
 162
 163         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
 164         ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
 165         DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
 166
 167 //      PBD::ScopedConnection _config_connection;
 168 //      Config->ParameterChanged.connect ( _config_connection, MISSING_INVALIDATOR, boost::bind(&GainMeterBase::set_flat_buttons, this, _1), gui_context() );
 169 }
 170
 171 void
 172 GainMeterBase::set_flat_buttons ()
 173 {
 174 printf("set_flat_butt\n");
 175 //      gain_slider->set_flat_buttons( ARDOUR_UI::config()->flat_buttons.get() );
 176 }
 177
 178 GainMeterBase::~GainMeterBase ()
 179 {
 180         delete meter_menu;
 181         delete level_meter;
 182 }
 183
 184 void
 185 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
 186                              boost::shared_ptr<PeakMeter> pm,
 187                              boost::shared_ptr<Amp> amp)
 188 {
 189         connections.clear ();
 190         model_connections.drop_connections ();
 191
 192         if (!pm && !amp) {
 193                 level_meter->set_meter (0);
 194                 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
 195                 _meter.reset ();
 196                 _amp.reset ();
 197                 _route.reset ();
 198                 return;
 199         }
 200
 201         _meter = pm;
 202         _amp = amp;
 203         _route = r;
 204
 205         level_meter->set_meter (pm.get());
 206         gain_slider->set_controllable (amp->gain_control());
 207
 208         if (amp) {
 209                 amp->ConfigurationChanged.connect (
 210                         model_connections, invalidator (*this), boost::bind (&GainMeterBase::setup_gain_adjustment, this), gui_context ()
 211                         );
 212         }
 213
 214         setup_gain_adjustment ();
 215
 216         if (!_route || !_route->is_hidden()) {
 217
 218                 using namespace Menu_Helpers;
 219
 220                 gain_astate_menu.items().clear ();
 221
 222                 gain_astate_menu.items().push_back (MenuElem (S_("Automation|Manual"),
 223                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 224                                                                           Evoral::Parameter(GainAutomation), (AutoState) ARDOUR::Off)));
 225                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 226                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 227                                                                     Evoral::Parameter(GainAutomation), (AutoState) Play)));
 228                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 229                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 230                                                                     Evoral::Parameter(GainAutomation), (AutoState) Write)));
 231                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 232                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 233                                                                     Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 234
 235                 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 236                 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 237
 238                 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
 239
 240                 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
 241                 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
 242
 243                 gain_automation_state_changed ();
 244         }
 245
 246         amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
 247
 248         gain_changed ();
 249         show_gain ();
 250         update_gain_sensitive ();
 251 }
 252
 253 void
 254 GainMeterBase::setup_gain_adjustment ()
 255 {
 256         if (!_amp) {
 257                 return;
 258         }
 259
 260         if (_previous_amp_output_streams == _amp->output_streams ()) {
 261                 return;
 262         }
 263
 264         ignore_toggle = true;
 265
 266         if (_amp->output_streams().n_midi() == 0) {
 267                 _data_type = DataType::AUDIO;
 268                 gain_adjustment.set_lower (0.0);
 269                 gain_adjustment.set_upper (1.0);
 270                 gain_adjustment.set_step_increment (0.01);
 271                 gain_adjustment.set_page_increment (0.1);
 272                 gain_slider->set_default_value (gain_to_slider_position (1));
 273         } else {
 274                 _data_type = DataType::MIDI;
 275                 gain_adjustment.set_lower (0.0);
 276                 gain_adjustment.set_upper (2.0);
 277                 gain_adjustment.set_step_increment (1.0/128.0);
 278                 gain_adjustment.set_page_increment (10.0/128.0);
 279                 gain_slider->set_default_value (1.0);
 280         }
 281
 282         ignore_toggle = false;
 283
 284         effective_gain_display ();
 285
 286         _previous_amp_output_streams = _amp->output_streams ();
 287 }
 288
 289 void
 290 GainMeterBase::hide_all_meters ()
 291 {
 292         level_meter->hide_meters();
 293 }
 294
 295 void
 296 GainMeter::hide_all_meters ()
 297 {
 298         bool remove_metric_area = false;
 299
 300         GainMeterBase::hide_all_meters ();
 301
 302         if (remove_metric_area) {
 303                 if (meter_metric_area.get_parent()) {
 304                         level_meter->remove (meter_metric_area);
 305                 }
 306         }
 307 }
 308
 309 void
 310 GainMeterBase::setup_meters (int len)
 311 {
 312         level_meter->setup_meters(len, 5);
 313 }
 314
 315 void
 316 GainMeter::setup_meters (int len)
 317 {
 318         if (!meter_metric_area.get_parent()) {
 319                 level_meter->pack_end (meter_metric_area, false, false);
 320                 meter_metric_area.show_all ();
 321         }
 322         GainMeterBase::setup_meters (len);
 323 }
 324
 325 bool
 326 GainMeterBase::gain_key_press (GdkEventKey* ev)
 327 {
 328         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 329                 /* drop through to normal handling */
 330                 return false;
 331         }
 332         /* illegal key for gain entry */
 333         return true;
 334 }
 335
 336 bool
 337 GainMeterBase::peak_button_release (GdkEventButton* ev)
 338 {
 339         /* reset peak label */
 340
 341         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 342                 ResetAllPeakDisplays ();
 343         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 344                 if (_route) {
 345                         ResetGroupPeakDisplays (_route->route_group());
 346                 }
 347         } else {
 348                 reset_peak_display ();
 349         }
 350
 351         return true;
 352 }
 353
 354 void
 355 GainMeterBase::reset_peak_display ()
 356 {
 357         _meter->reset_max();
 358         level_meter->clear_meters();
 359         max_peak = -INFINITY;
 360         peak_display.set_label (_("-Inf"));
 361         peak_display.set_name ("MixerStripPeakDisplay");
 362 }
 363
 364 void
 365 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 366 {
 367         if (_route && group == _route->route_group()) {
 368                 reset_peak_display ();
 369         }
 370 }
 371
 372 void
 373 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 374 {
 375         using namespace Menu_Helpers;
 376
 377         if (meter_menu == 0) {
 378                 meter_menu = new Gtk::Menu;
 379                 MenuList& items = meter_menu->items();
 380
 381                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 382                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 383                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 384                 items.push_back (SeparatorElem());
 385                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 386                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 387                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 388         }
 389
 390         meter_menu->popup (1, ev->time);
 391 }
 392
 393 bool
 394 GainMeterBase::gain_focused (GdkEventFocus* ev)
 395 {
 396         if (ev->in) {
 397                 gain_display.select_region (0, -1);
 398         } else {
 399                 gain_display.select_region (0, 0);
 400         }
 401         return false;
 402 }
 403
 404 void
 405 GainMeterBase::gain_activated ()
 406 {
 407         float f;
 408
 409         {
 410                 // Switch to user's preferred locale so that
 411                 // if they use different LC_NUMERIC conventions,
 412                 // we will honor them.
 413
 414                 PBD::LocaleGuard lg ("");
 415                 if (sscanf (gain_display.get_text().c_str(), "%f", &f) != 1) {
 416                         return;
 417                 }
 418         }
 419
 420         /* clamp to displayable values */
 421         if (_data_type == DataType::AUDIO) {
 422                 f = min (f, 6.0f);
 423                 _amp->set_gain (dB_to_coefficient(f), this);
 424         } else {
 425                 f = min (fabs (f), 2.0f);
 426                 _amp->set_gain (f, this);
 427         }
 428
 429         if (gain_display.has_focus()) {
 430                 PublicEditor::instance().reset_focus();
 431         }
 432 }
 433
 434 void
 435 GainMeterBase::show_gain ()
 436 {
 437         char buf[32];
 438
 439         float v = gain_adjustment.get_value();
 440
 441         switch (_data_type) {
 442         case DataType::AUDIO:
 443                 if (v == 0.0) {
 444                         strcpy (buf, _("-inf"));
 445                 } else {
 446                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
 447                 }
 448                 break;
 449         case DataType::MIDI:
 450                 snprintf (buf, sizeof (buf), "%.1f", v);
 451                 break;
 452         }
 453
 454         gain_display.set_text (buf);
 455 }
 456
 457 void
 458 GainMeterBase::gain_adjusted ()
 459 {
 460         gain_t value;
 461
 462         /* convert from adjustment range (0..1) to gain coefficient */
 463
 464         if (_data_type == DataType::AUDIO) {
 465                 value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
 466         } else {
 467                 value = gain_adjustment.get_value();
 468         }
 469
 470         if (!ignore_toggle) {
 471                 if (_route && _route->amp() == _amp) {
 472                         _route->set_gain (value, this);
 473                 } else {
 474                         _amp->set_gain (value, this);
 475                 }
 476         }
 477
 478         show_gain ();
 479 }
 480
 481 void
 482 GainMeterBase::effective_gain_display ()
 483 {
 484         float value = 0.0;
 485
 486         switch (_data_type) {
 487         case DataType::AUDIO:
 488                 value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
 489                 break;
 490         case DataType::MIDI:
 491                 value = _amp->gain ();
 492                 break;
 493         }
 494
 495         if (gain_adjustment.get_value() != value) {
 496                 ignore_toggle = true;
 497                 gain_adjustment.set_value (value);
 498                 ignore_toggle = false;
 499         }
 500 }
 501
 502 void
 503 GainMeterBase::gain_changed ()
 504 {
 505         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 506 }
 507
 508 void
 509 GainMeterBase::set_meter_strip_name (const char * name)
 510 {
 511         meter_metric_area.set_name (name);
 512 }
 513
 514 void
 515 GainMeterBase::set_fader_name (const char * name)
 516 {
 517         uint32_t rgb_active = rgba_from_style (name, 0xff, 0, 0xff, 0, "bg", STATE_ACTIVE, false);
 518         uint32_t rgb_normal = rgba_from_style (name, 0xff, 0xff, 0, 0, "bg", STATE_NORMAL, false);
 519
 520         gain_slider->set_border_colors (rgb_normal, rgb_active);
 521 }
 522
 523 void
 524 GainMeterBase::update_gain_sensitive ()
 525 {
 526         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 527         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 528 }
 529
 530 static MeterPoint
 531 next_meter_point (MeterPoint mp)
 532 {
 533         switch (mp) {
 534         case MeterInput:
 535                 return MeterPreFader;
 536                 break;
 537
 538         case MeterPreFader:
 539                 return MeterPostFader;
 540                 break;
 541
 542         case MeterPostFader:
 543                 return MeterOutput;
 544                 break;
 545
 546         case MeterOutput:
 547                 return MeterCustom;
 548                 break;
 549
 550         case MeterCustom:
 551                 return MeterInput;
 552                 break;
 553         }
 554
 555         /*NOTREACHED*/
 556         return MeterInput;
 557 }
 558
 559 gint
 560 GainMeterBase::meter_press(GdkEventButton* ev)
 561 {
 562         wait_for_release = false;
 563
 564         if (!_route) {
 565                 return FALSE;
 566         }
 567
 568         if (!ignore_toggle) {
 569
 570                 if (Keyboard::is_context_menu_event (ev)) {
 571
 572                         // no menu at this time.
 573
 574                 } else {
 575
 576                         if (Keyboard::is_button2_event(ev)) {
 577
 578                                 // Primary-button2 click is the midi binding click
 579                                 // button2-click is "momentary"
 580
 581                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 582                                         wait_for_release = true;
 583                                         old_meter_point = _route->meter_point ();
 584                                 }
 585                         }
 586
 587                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 588
 589                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 590
 591                                         /* Primary+Tertiary-click applies change to all routes */
 592
 593                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 594
 595
 596                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 597
 598                                         /* Primary-click: solo mix group.
 599                                            NOTE: Primary-button2 is MIDI learn.
 600                                         */
 601
 602                                         if (ev->button == 1) {
 603                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 604                                         }
 605
 606                                 } else {
 607
 608                                         /* click: change just this route */
 609
 610                                         // XXX no undo yet
 611
 612                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 613                                 }
 614                         }
 615                 }
 616         }
 617
 618         return true;
 619
 620 }
 621
 622 gint
 623 GainMeterBase::meter_release(GdkEventButton*)
 624 {
 625         if (!ignore_toggle) {
 626                 if (wait_for_release) {
 627                         wait_for_release = false;
 628
 629                         if (_route) {
 630                                 set_meter_point (*_route, old_meter_point);
 631                         }
 632                 }
 633         }
 634
 635         return true;
 636 }
 637
 638 void
 639 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 640 {
 641         route.set_meter_point (mp);
 642 }
 643
 644 void
 645 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 646 {
 647         RouteGroup* route_group;
 648
 649         if ((route_group = route.route_group ()) != 0) {
 650                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 651         } else {
 652                 route.set_meter_point (mp);
 653         }
 654 }
 655
 656 void
 657 GainMeterBase::meter_point_clicked ()
 658 {
 659         if (_route) {
 660                 /* WHAT? */
 661         }
 662 }
 663
 664 bool
 665 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 666 {
 667         switch (ev->type) {
 668         case GDK_BUTTON_PRESS:
 669                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 670                 break;
 671         default:
 672                 return false;
 673         }
 674
 675         return false;
 676 }
 677
 678 bool
 679 GainMeterBase::gain_slider_button_release (GdkEventButton*)
 680 {
 681         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 682         return false;
 683 }
 684
 685 gint
 686 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 687 {
 688         if (ev->type == GDK_BUTTON_RELEASE) {
 689                 return TRUE;
 690         }
 691
 692         switch (ev->button) {
 693                 case 1:
 694                         gain_astate_menu.popup (1, ev->time);
 695                         break;
 696                 default:
 697                         break;
 698         }
 699
 700         return TRUE;
 701 }
 702
 703 gint
 704 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 705 {
 706         if (ev->type == GDK_BUTTON_RELEASE) {
 707                 return TRUE;
 708         }
 709
 710         switch (ev->button) {
 711         case 1:
 712                 gain_astyle_menu.popup (1, ev->time);
 713                 break;
 714         default:
 715                 break;
 716         }
 717         return TRUE;
 718 }
 719
 720 string
 721 GainMeterBase::astate_string (AutoState state)
 722 {
 723         return _astate_string (state, false);
 724 }
 725
 726 string
 727 GainMeterBase::short_astate_string (AutoState state)
 728 {
 729         return _astate_string (state, true);
 730 }
 731
 732 string
 733 GainMeterBase::_astate_string (AutoState state, bool shrt)
 734 {
 735         string sstr;
 736
 737         switch (state) {
 738         case ARDOUR::Off:
 739                 sstr = (shrt ? "M" : _("M"));
 740                 break;
 741         case Play:
 742                 sstr = (shrt ? "P" : _("P"));
 743                 break;
 744         case Touch:
 745                 sstr = (shrt ? "T" : _("T"));
 746                 break;
 747         case Write:
 748                 sstr = (shrt ? "W" : _("W"));
 749                 break;
 750         }
 751
 752         return sstr;
 753 }
 754
 755 string
 756 GainMeterBase::astyle_string (AutoStyle style)
 757 {
 758         return _astyle_string (style, false);
 759 }
 760
 761 string
 762 GainMeterBase::short_astyle_string (AutoStyle style)
 763 {
 764         return _astyle_string (style, true);
 765 }
 766
 767 string
 768 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 769 {
 770         if (style & Trim) {
 771                 return _("Trim");
 772         } else {
 773                 /* XXX it might different in different languages */
 774
 775                 return (shrt ? _("Abs") : _("Abs"));
 776         }
 777 }
 778
 779 void
 780 GainMeterBase::gain_automation_style_changed ()
 781 {
 782         switch (_width) {
 783         case Wide:
 784                 gain_automation_style_button.set_text (astyle_string(_amp->gain_control()->alist()->automation_style()));
 785                 break;
 786         case Narrow:
 787                 gain_automation_style_button.set_text  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 788                 break;
 789         }
 790 }
 791
 792 void
 793 GainMeterBase::gain_automation_state_changed ()
 794 {
 795         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 796
 797         bool x;
 798
 799         switch (_width) {
 800         case Wide:
 801                 gain_automation_state_button.set_text (astate_string(_amp->gain_control()->alist()->automation_state()));
 802                 break;
 803         case Narrow:
 804                 gain_automation_state_button.set_text (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 805                 break;
 806         }
 807
 808         x = (_amp->gain_control()->alist()->automation_state() != ARDOUR::Off);
 809
 810         if (gain_automation_state_button.get_active() != x) {
 811                 ignore_toggle = true;
 812                 gain_automation_state_button.set_active (x);
 813                 ignore_toggle = false;
 814         }
 815
 816         update_gain_sensitive ();
 817
 818         /* start watching automation so that things move */
 819
 820         gain_watching.disconnect();
 821
 822         if (x) {
 823                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 824         }
 825 }
 826
 827 void
 828 GainMeterBase::update_meters()
 829 {
 830         char buf[32];
 831         float mpeak = level_meter->update_meters();
 832
 833         if (mpeak > max_peak) {
 834                 max_peak = mpeak;
 835                 if (mpeak <= -200.0f) {
 836                         peak_display.set_label (_("-inf"));
 837                 } else {
 838                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 839                         peak_display.set_label (buf);
 840                 }
 841
 842                 if (mpeak >= 0.0f) {
 843                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 844                 }
 845         }
 846 }
 847
 848 void GainMeterBase::color_handler(bool dpi)
 849 {
 850         color_changed = true;
 851         dpi_changed = (dpi) ? true : false;
 852         setup_meters();
 853 }
 854
 855 void
 856 GainMeterBase::set_width (Width w, int len)
 857 {
 858         _width = w;
 859         level_meter->setup_meters (len);
 860 }
 861
 862
 863 void
 864 GainMeterBase::on_theme_changed()
 865 {
 866         style_changed = true;
 867 }
 868
 869 GainMeter::GainMeter (Session* s, int fader_length)
 870         : GainMeterBase (s, slider, slider_desensitised, false, fader_length)
 871         , gain_display_box(true, 0)
 872         , hbox(true, 2)
 873 {
 874 //      gain_display_box.pack_start (gain_display, true, true);
 875
 876         meter_metric_area.set_name ("AudioTrackMetrics");
 877         set_size_request_to_display_given_text (meter_metric_area, "-127", 0, 0);
 878
 879         gain_automation_style_button.set_name ("mixer strip button");
 880         gain_automation_state_button.set_name ("mixer strip button");
 881
 882         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 883         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 884
 885         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 886         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 887
 888         gain_automation_state_button.set_size_request(15, 15);
 889         gain_automation_style_button.set_size_request(15, 15);
 890
 891         fader_vbox = manage (new Gtk::VBox());
 892         fader_vbox->set_spacing (0);
 893         fader_vbox->pack_start (*gain_slider, true, true);
 894
 895         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 896         fader_alignment.add (*fader_vbox);
 897
 898         hbox.pack_start (fader_alignment, true, true);
 899
 900         set_spacing (2);
 901
 902         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 903         pack_start (hbox, Gtk::PACK_SHRINK);
 904
 905         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 906         meter_alignment.add (*level_meter);
 907
 908         meter_metric_area.signal_expose_event().connect (
 909                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 910 }
 911
 912 void
 913 GainMeter::set_controls (boost::shared_ptr<Route> r,
 914                          boost::shared_ptr<PeakMeter> meter,
 915                          boost::shared_ptr<Amp> amp)
 916 {
 917         if (meter_alignment.get_parent()) {
 918                 hbox.remove (meter_alignment);
 919         }
 920
 921 //      if (peak_display.get_parent()) {
 922 //              gain_display_box.remove (peak_display);
 923 //      }
 924
 925 //      if (gain_automation_state_button.get_parent()) {
 926 //              fader_vbox->remove (gain_automation_state_button);
 927 //      }
 928
 929         GainMeterBase::set_controls (r, meter, amp);
 930
 931         if (_meter) {
 932                 _meter->ConfigurationChanged.connect (
 933                         model_connections, invalidator (*this), boost::bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 934                         );
 935
 936                 meter_configuration_changed (_meter->input_streams ());
 937         }
 938
 939
 940         /*
 941            if we have a non-hidden route (ie. we're not the click or the auditioner),
 942            pack some route-dependent stuff.
 943         */
 944
 945 //      gain_display_box.pack_end (peak_display, true, true);
 946         hbox.pack_start (meter_alignment, true, true);
 947
 948 //      if (r && !r->is_hidden()) {
 949 //              fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 950 //      }
 951
 952         setup_meters ();
 953         hbox.show_all ();
 954 }
 955
 956 int
 957 GainMeter::get_gm_width ()
 958 {
 959         Gtk::Requisition sz;
 960         hbox.size_request (sz);
 961         return sz.width;
 962 }
 963
 964 cairo_pattern_t*
 965 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 966 {
 967         Glib::RefPtr<Gdk::Window> win (w.get_window());
 968
 969         gint width, height;
 970         win->get_size (width, height);
 971
 972         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 973         cairo_t* cr = cairo_create (surface);
 974         PangoLayout* layout = gtk_widget_create_pango_layout (w.gobj(), "");
 975
 976         cairo_move_to (cr, 0, 0);
 977         cairo_rectangle (cr, 0, 0, width, height);
 978         {
 979                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 980                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 981         }
 982         cairo_fill (cr);
 983
 984         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 985
 986                 Gdk::Color c;
 987
 988                 if (types.size() > 1) {
 989                         /* we're overlaying more than 1 set of marks, so use different colours */
 990                         Gdk::Color c;
 991                         switch (*i) {
 992                         case DataType::AUDIO:
 993                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 994                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 995                                 break;
 996                         case DataType::MIDI:
 997                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 998                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 999                                 break;
1000                         }
1001                 } else {
1002                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1003                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1004                 }
1005
1006                 vector<int> points;
1007
1008                 switch (*i) {
1009                 case DataType::AUDIO:
1010                         points.push_back (-50);
1011                         points.push_back (-40);
1012                         points.push_back (-30);
1013                         points.push_back (-20);
1014                         points.push_back (-10);
1015                         points.push_back (-3);
1016                         points.push_back (0);
1017                         points.push_back (4);
1018                         break;
1019
1020                 case DataType::MIDI:
1021                         points.push_back (0);
1022                         if (types.size() == 1) {
1023                                 points.push_back (32);
1024                         } else {
1025                                 /* tweak so as not to overlay the -30dB mark */
1026                                 points.push_back (48);
1027                         }
1028                         points.push_back (64);
1029                         points.push_back (96);
1030                         points.push_back (127);
1031                         break;
1032                 }
1033
1034                 char buf[32];
1035
1036                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
1037
1038                         float fraction = 0;
1039                         switch (*i) {
1040                         case DataType::AUDIO:
1041                                 fraction = log_meter (*j);
1042                                 break;
1043                         case DataType::MIDI:
1044                                 fraction = *j / 127.0;
1045                                 break;
1046                         }
1047
1048                         gint const pos = height - (gint) floor (height * fraction);
1049
1050                         cairo_set_line_width (cr, 1.0);
1051                         cairo_move_to (cr, 0, pos);
1052                         cairo_line_to (cr, 4, pos);
1053                         cairo_stroke (cr);
1054
1055                         snprintf (buf, sizeof (buf), "%d", abs (*j));
1056                         pango_layout_set_text (layout, buf, strlen (buf));
1057
1058                         /* we want logical extents, not ink extents here */
1059
1060                         int tw, th;
1061                         pango_layout_get_pixel_size (layout, &tw, &th);
1062
1063                         int p = pos - (th / 2);
1064                         p = min (p, height - th);
1065                         p = max (p, 0);
1066
1067                         cairo_move_to (cr, 6, p);
1068                         pango_cairo_show_layout (cr, layout);
1069                 }
1070         }
1071
1072         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1073         MetricPatterns::iterator p;
1074
1075         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
1076                 cairo_pattern_destroy (p->second);
1077         }
1078
1079         metric_patterns[w.get_name()] = pattern;
1080
1081         cairo_destroy (cr);
1082         cairo_surface_destroy (surface);
1083         g_object_unref (layout);
1084
1085         return pattern;
1086 }
1087
1088 gint
1089 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1090 {
1091         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1092         cairo_t* cr;
1093
1094         cr = gdk_cairo_create (win->gobj());
1095
1096         /* clip to expose area */
1097
1098         gdk_cairo_rectangle (cr, &ev->area);
1099         cairo_clip (cr);
1100
1101         cairo_pattern_t* pattern;
1102         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
1103
1104         if (i == metric_patterns.end() || style_changed || dpi_changed) {
1105                 pattern = render_metrics (meter_metric_area, _types);
1106         } else {
1107                 pattern = i->second;
1108         }
1109
1110         cairo_move_to (cr, 0, 0);
1111         cairo_set_source (cr, pattern);
1112
1113         gint width, height;
1114         win->get_size (width, height);
1115
1116         cairo_rectangle (cr, 0, 0, width, height);
1117         cairo_fill (cr);
1118
1119         style_changed = false;
1120         dpi_changed = false;
1121
1122         cairo_destroy (cr);
1123
1124         return true;
1125 }
1126
1127 boost::shared_ptr<PBD::Controllable>
1128 GainMeterBase::get_controllable()
1129 {
1130         if (_amp) {
1131                 return _amp->gain_control();
1132         } else {
1133                 return boost::shared_ptr<PBD::Controllable>();
1134         }
1135 }
1136
1137 bool
1138 GainMeterBase::level_meter_button_press (GdkEventButton* ev)
1139 {
1140         return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
1141 }
1142
1143 void
1144 GainMeter::meter_configuration_changed (ChanCount c)
1145 {
1146         _types.clear ();
1147
1148         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1149                 if (c.get (*i) > 0) {
1150                         _types.push_back (*i);
1151                 }
1152         }
1153
1154         style_changed = true;
1155         meter_metric_area.queue_draw ();
1156 }
1157