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));
 123         gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release));
 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 ("MixerAutomationModeButton");
 139         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 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
 168 GainMeterBase::~GainMeterBase ()
 169 {
 170         delete meter_menu;
 171         delete level_meter;
 172 }
 173
 174 void
 175 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
 176                              boost::shared_ptr<PeakMeter> pm,
 177                              boost::shared_ptr<Amp> amp)
 178 {
 179         connections.clear ();
 180         model_connections.drop_connections ();
 181
 182         if (!pm && !amp) {
 183                 level_meter->set_meter (0);
 184                 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
 185                 _meter.reset ();
 186                 _amp.reset ();
 187                 _route.reset ();
 188                 return;
 189         }
 190
 191         _meter = pm;
 192         _amp = amp;
 193         _route = r;
 194
 195         level_meter->set_meter (pm.get());
 196         gain_slider->set_controllable (amp->gain_control());
 197
 198         if (amp) {
 199                 amp->ConfigurationChanged.connect (
 200                         model_connections, invalidator (*this), boost::bind (&GainMeterBase::setup_gain_adjustment, this), gui_context ()
 201                         );
 202         }
 203
 204         setup_gain_adjustment ();
 205
 206         if (!_route || !_route->is_hidden()) {
 207
 208                 using namespace Menu_Helpers;
 209
 210                 gain_astate_menu.items().clear ();
 211
 212                 gain_astate_menu.items().push_back (MenuElem (S_("Automation|Manual"),
 213                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 214                                                                           Evoral::Parameter(GainAutomation), (AutoState) ARDOUR::Off)));
 215                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 216                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 217                                                                     Evoral::Parameter(GainAutomation), (AutoState) Play)));
 218                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 219                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 220                                                                     Evoral::Parameter(GainAutomation), (AutoState) Write)));
 221                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 222                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 223                                                                     Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 224
 225                 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 226                 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 227
 228                 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
 229
 230                 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
 231                 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
 232
 233                 gain_automation_state_changed ();
 234         }
 235
 236         amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
 237
 238         gain_changed ();
 239         show_gain ();
 240         update_gain_sensitive ();
 241 }
 242
 243 void
 244 GainMeterBase::setup_gain_adjustment ()
 245 {
 246         if (!_amp) {
 247                 return;
 248         }
 249
 250         if (_previous_amp_output_streams == _amp->output_streams ()) {
 251                 return;
 252         }
 253
 254         ignore_toggle = true;
 255
 256         if (_amp->output_streams().n_midi() == 0) {
 257                 _data_type = DataType::AUDIO;
 258                 gain_adjustment.set_lower (0.0);
 259                 gain_adjustment.set_upper (1.0);
 260                 gain_adjustment.set_step_increment (0.01);
 261                 gain_adjustment.set_page_increment (0.1);
 262                 gain_slider->set_default_value (gain_to_slider_position (1));
 263         } else {
 264                 _data_type = DataType::MIDI;
 265                 gain_adjustment.set_lower (0.0);
 266                 gain_adjustment.set_upper (2.0);
 267                 gain_adjustment.set_step_increment (0.05);
 268                 gain_adjustment.set_page_increment (0.1);
 269                 gain_slider->set_default_value (1);
 270         }
 271
 272         ignore_toggle = false;
 273
 274         effective_gain_display ();
 275
 276         _previous_amp_output_streams = _amp->output_streams ();
 277 }
 278
 279 void
 280 GainMeterBase::hide_all_meters ()
 281 {
 282         level_meter->hide_meters();
 283 }
 284
 285 void
 286 GainMeter::hide_all_meters ()
 287 {
 288         bool remove_metric_area = false;
 289
 290         GainMeterBase::hide_all_meters ();
 291
 292         if (remove_metric_area) {
 293                 if (meter_metric_area.get_parent()) {
 294                         level_meter->remove (meter_metric_area);
 295                 }
 296         }
 297 }
 298
 299 void
 300 GainMeterBase::setup_meters (int len)
 301 {
 302         level_meter->setup_meters(len, 5);
 303 }
 304
 305 void
 306 GainMeter::setup_meters (int len)
 307 {
 308         if (!meter_metric_area.get_parent()) {
 309                 level_meter->pack_end (meter_metric_area, false, false);
 310                 meter_metric_area.show_all ();
 311         }
 312         GainMeterBase::setup_meters (len);
 313 }
 314
 315 bool
 316 GainMeterBase::gain_key_press (GdkEventKey* ev)
 317 {
 318         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 319                 /* drop through to normal handling */
 320                 return false;
 321         }
 322         /* illegal key for gain entry */
 323         return true;
 324 }
 325
 326 bool
 327 GainMeterBase::peak_button_release (GdkEventButton* ev)
 328 {
 329         /* reset peak label */
 330
 331         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 332                 ResetAllPeakDisplays ();
 333         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 334                 if (_route) {
 335                         ResetGroupPeakDisplays (_route->route_group());
 336                 }
 337         } else {
 338                 reset_peak_display ();
 339         }
 340
 341         return true;
 342 }
 343
 344 void
 345 GainMeterBase::reset_peak_display ()
 346 {
 347         _meter->reset_max();
 348         level_meter->clear_meters();
 349         max_peak = -INFINITY;
 350         peak_display.set_label (_("-Inf"));
 351         peak_display.set_name ("MixerStripPeakDisplay");
 352 }
 353
 354 void
 355 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 356 {
 357         if (_route && group == _route->route_group()) {
 358                 reset_peak_display ();
 359         }
 360 }
 361
 362 void
 363 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 364 {
 365         using namespace Menu_Helpers;
 366
 367         if (meter_menu == 0) {
 368                 meter_menu = new Gtk::Menu;
 369                 MenuList& items = meter_menu->items();
 370
 371                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 372                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 373                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 374                 items.push_back (SeparatorElem());
 375                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 376                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 377                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 378         }
 379
 380         meter_menu->popup (1, ev->time);
 381 }
 382
 383 bool
 384 GainMeterBase::gain_focused (GdkEventFocus* ev)
 385 {
 386         if (ev->in) {
 387                 gain_display.select_region (0, -1);
 388         } else {
 389                 gain_display.select_region (0, 0);
 390         }
 391         return false;
 392 }
 393
 394 void
 395 GainMeterBase::gain_activated ()
 396 {
 397         float f;
 398
 399         if (sscanf (gain_display.get_text().c_str(), "%f", &f) == 1) {
 400
 401                 /* clamp to displayable values */
 402
 403                 f = min (f, 6.0f);
 404
 405                 _amp->set_gain (dB_to_coefficient(f), this);
 406
 407                 if (gain_display.has_focus()) {
 408                         PublicEditor::instance().reset_focus();
 409                 }
 410         }
 411 }
 412
 413 void
 414 GainMeterBase::show_gain ()
 415 {
 416         char buf[32];
 417
 418         float v = gain_adjustment.get_value();
 419
 420         switch (_data_type) {
 421         case DataType::AUDIO:
 422                 if (v == 0.0) {
 423                         strcpy (buf, _("-inf"));
 424                 } else {
 425                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
 426                 }
 427                 break;
 428         case DataType::MIDI:
 429                 snprintf (buf, sizeof (buf), "%.1f", v);
 430                 break;
 431         }
 432
 433         gain_display.set_text (buf);
 434 }
 435
 436 void
 437 GainMeterBase::gain_adjusted ()
 438 {
 439         gain_t value = 0;
 440
 441         switch (_data_type) {
 442         case DataType::AUDIO:
 443                 value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
 444                 break;
 445         case DataType::MIDI:
 446                 value = gain_adjustment.get_value ();
 447                 break;
 448         }
 449
 450         if (!ignore_toggle) {
 451                 if (_route && _route->amp() == _amp) {
 452                         _route->set_gain (value, this);
 453                 } else {
 454                         _amp->set_gain (value, this);
 455                 }
 456         }
 457
 458         show_gain ();
 459 }
 460
 461 void
 462 GainMeterBase::effective_gain_display ()
 463 {
 464         float value = 0.0;
 465
 466         switch (_data_type) {
 467         case DataType::AUDIO:
 468                 value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
 469                 break;
 470         case DataType::MIDI:
 471                 value = _amp->gain ();
 472                 break;
 473         }
 474
 475         if (gain_adjustment.get_value() != value) {
 476                 ignore_toggle = true;
 477                 gain_adjustment.set_value (value);
 478                 ignore_toggle = false;
 479         }
 480 }
 481
 482 void
 483 GainMeterBase::gain_changed ()
 484 {
 485         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 486 }
 487
 488 void
 489 GainMeterBase::set_meter_strip_name (const char * name)
 490 {
 491         meter_metric_area.set_name (name);
 492 }
 493
 494 void
 495 GainMeterBase::set_fader_name (const char * name)
 496 {
 497         uint32_t rgb_active = rgba_from_style (name, 0xff, 0, 0xff, 0, "bg", STATE_ACTIVE, false);
 498         uint32_t rgb_normal = rgba_from_style (name, 0xff, 0xff, 0, 0, "bg", STATE_NORMAL, false);
 499
 500         gain_slider->set_border_colors (rgb_normal, rgb_active);
 501 }
 502
 503 void
 504 GainMeterBase::update_gain_sensitive ()
 505 {
 506         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 507         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 508 }
 509
 510 static MeterPoint
 511 next_meter_point (MeterPoint mp)
 512 {
 513         switch (mp) {
 514         case MeterInput:
 515                 return MeterPreFader;
 516                 break;
 517
 518         case MeterPreFader:
 519                 return MeterPostFader;
 520                 break;
 521
 522         case MeterPostFader:
 523                 return MeterOutput;
 524                 break;
 525
 526         case MeterOutput:
 527                 return MeterCustom;
 528                 break;
 529
 530         case MeterCustom:
 531                 return MeterInput;
 532                 break;
 533         }
 534
 535         /*NOTREACHED*/
 536         return MeterInput;
 537 }
 538
 539 gint
 540 GainMeterBase::meter_press(GdkEventButton* ev)
 541 {
 542         wait_for_release = false;
 543
 544         if (!_route) {
 545                 return FALSE;
 546         }
 547
 548         if (!ignore_toggle) {
 549
 550                 if (Keyboard::is_context_menu_event (ev)) {
 551
 552                         // no menu at this time.
 553
 554                 } else {
 555
 556                         if (Keyboard::is_button2_event(ev)) {
 557
 558                                 // Primary-button2 click is the midi binding click
 559                                 // button2-click is "momentary"
 560
 561                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 562                                         wait_for_release = true;
 563                                         old_meter_point = _route->meter_point ();
 564                                 }
 565                         }
 566
 567                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 568
 569                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 570
 571                                         /* Primary+Tertiary-click applies change to all routes */
 572
 573                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 574
 575
 576                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 577
 578                                         /* Primary-click: solo mix group.
 579                                            NOTE: Primary-button2 is MIDI learn.
 580                                         */
 581
 582                                         if (ev->button == 1) {
 583                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 584                                         }
 585
 586                                 } else {
 587
 588                                         /* click: change just this route */
 589
 590                                         // XXX no undo yet
 591
 592                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 593                                 }
 594                         }
 595                 }
 596         }
 597
 598         return true;
 599
 600 }
 601
 602 gint
 603 GainMeterBase::meter_release(GdkEventButton*)
 604 {
 605         if (!ignore_toggle) {
 606                 if (wait_for_release) {
 607                         wait_for_release = false;
 608
 609                         if (_route) {
 610                                 set_meter_point (*_route, old_meter_point);
 611                         }
 612                 }
 613         }
 614
 615         return true;
 616 }
 617
 618 void
 619 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 620 {
 621         route.set_meter_point (mp);
 622 }
 623
 624 void
 625 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 626 {
 627         RouteGroup* route_group;
 628
 629         if ((route_group = route.route_group ()) != 0) {
 630                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 631         } else {
 632                 route.set_meter_point (mp);
 633         }
 634 }
 635
 636 void
 637 GainMeterBase::meter_point_clicked ()
 638 {
 639         if (_route) {
 640                 /* WHAT? */
 641         }
 642 }
 643
 644 bool
 645 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 646 {
 647         switch (ev->type) {
 648         case GDK_BUTTON_PRESS:
 649                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 650                 break;
 651         default:
 652                 return false;
 653         }
 654
 655         return true;
 656 }
 657
 658 bool
 659 GainMeterBase::gain_slider_button_release (GdkEventButton*)
 660 {
 661         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 662         return true;
 663 }
 664
 665 gint
 666 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 667 {
 668         if (ev->type == GDK_BUTTON_RELEASE) {
 669                 return TRUE;
 670         }
 671
 672         switch (ev->button) {
 673                 case 1:
 674                         gain_astate_menu.popup (1, ev->time);
 675                         break;
 676                 default:
 677                         break;
 678         }
 679
 680         return TRUE;
 681 }
 682
 683 gint
 684 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 685 {
 686         if (ev->type == GDK_BUTTON_RELEASE) {
 687                 return TRUE;
 688         }
 689
 690         switch (ev->button) {
 691         case 1:
 692                 gain_astyle_menu.popup (1, ev->time);
 693                 break;
 694         default:
 695                 break;
 696         }
 697         return TRUE;
 698 }
 699
 700 string
 701 GainMeterBase::astate_string (AutoState state)
 702 {
 703         return _astate_string (state, false);
 704 }
 705
 706 string
 707 GainMeterBase::short_astate_string (AutoState state)
 708 {
 709         return _astate_string (state, true);
 710 }
 711
 712 string
 713 GainMeterBase::_astate_string (AutoState state, bool shrt)
 714 {
 715         string sstr;
 716
 717         switch (state) {
 718         case ARDOUR::Off:
 719                 sstr = (shrt ? "M" : _("M"));
 720                 break;
 721         case Play:
 722                 sstr = (shrt ? "P" : _("P"));
 723                 break;
 724         case Touch:
 725                 sstr = (shrt ? "T" : _("T"));
 726                 break;
 727         case Write:
 728                 sstr = (shrt ? "W" : _("W"));
 729                 break;
 730         }
 731
 732         return sstr;
 733 }
 734
 735 string
 736 GainMeterBase::astyle_string (AutoStyle style)
 737 {
 738         return _astyle_string (style, false);
 739 }
 740
 741 string
 742 GainMeterBase::short_astyle_string (AutoStyle style)
 743 {
 744         return _astyle_string (style, true);
 745 }
 746
 747 string
 748 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 749 {
 750         if (style & Trim) {
 751                 return _("Trim");
 752         } else {
 753                 /* XXX it might different in different languages */
 754
 755                 return (shrt ? _("Abs") : _("Abs"));
 756         }
 757 }
 758
 759 void
 760 GainMeterBase::gain_automation_style_changed ()
 761 {
 762         switch (_width) {
 763         case Wide:
 764                 gain_automation_style_button.set_label (astyle_string(_amp->gain_control()->alist()->automation_style()));
 765                 break;
 766         case Narrow:
 767                 gain_automation_style_button.set_label  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 768                 break;
 769         }
 770 }
 771
 772 void
 773 GainMeterBase::gain_automation_state_changed ()
 774 {
 775         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 776
 777         bool x;
 778
 779         switch (_width) {
 780         case Wide:
 781                 gain_automation_state_button.set_label (astate_string(_amp->gain_control()->alist()->automation_state()));
 782                 break;
 783         case Narrow:
 784                 gain_automation_state_button.set_label (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 785                 break;
 786         }
 787
 788         x = (_amp->gain_control()->alist()->automation_state() != ARDOUR::Off);
 789
 790         if (gain_automation_state_button.get_active() != x) {
 791                 ignore_toggle = true;
 792                 gain_automation_state_button.set_active (x);
 793                 ignore_toggle = false;
 794         }
 795
 796         update_gain_sensitive ();
 797
 798         /* start watching automation so that things move */
 799
 800         gain_watching.disconnect();
 801
 802         if (x) {
 803                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 804         }
 805 }
 806
 807 void
 808 GainMeterBase::update_meters()
 809 {
 810         char buf[32];
 811         float mpeak = level_meter->update_meters();
 812
 813         if (mpeak > max_peak) {
 814                 max_peak = mpeak;
 815                 if (mpeak <= -200.0f) {
 816                         peak_display.set_label (_("-inf"));
 817                 } else {
 818                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 819                         peak_display.set_label (buf);
 820                 }
 821
 822                 if (mpeak >= 0.0f) {
 823                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 824                 }
 825         }
 826 }
 827
 828 void GainMeterBase::color_handler(bool dpi)
 829 {
 830         color_changed = true;
 831         dpi_changed = (dpi) ? true : false;
 832         setup_meters();
 833 }
 834
 835 void
 836 GainMeterBase::set_width (Width w, int len)
 837 {
 838         _width = w;
 839         level_meter->setup_meters (len);
 840 }
 841
 842
 843 void
 844 GainMeterBase::on_theme_changed()
 845 {
 846         style_changed = true;
 847 }
 848
 849 GainMeter::GainMeter (Session* s, int fader_length)
 850         : GainMeterBase (s, slider, slider_desensitised, false, fader_length)
 851         , gain_display_box(true, 0)
 852         , hbox(true, 2)
 853 {
 854         gain_display_box.pack_start (gain_display, true, true);
 855
 856         meter_metric_area.set_name ("AudioTrackMetrics");
 857         set_size_request_to_display_given_text (meter_metric_area, "-127", 0, 0);
 858
 859         gain_automation_style_button.set_name ("MixerAutomationModeButton");
 860         gain_automation_state_button.set_name ("MixerAutomationPlaybackButton");
 861
 862         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 863         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 864
 865         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 866         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 867
 868         gain_automation_state_button.set_size_request(15, 15);
 869         gain_automation_style_button.set_size_request(15, 15);
 870
 871         fader_vbox = manage (new Gtk::VBox());
 872         fader_vbox->set_spacing (0);
 873         fader_vbox->pack_start (*gain_slider, true, true);
 874
 875         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 876         fader_alignment.add (*fader_vbox);
 877
 878         hbox.pack_start (fader_alignment, true, true);
 879
 880         set_spacing (2);
 881
 882         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 883         pack_start (hbox, Gtk::PACK_SHRINK);
 884
 885         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 886         meter_alignment.add (*level_meter);
 887
 888         meter_metric_area.signal_expose_event().connect (
 889                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 890 }
 891
 892 void
 893 GainMeter::set_controls (boost::shared_ptr<Route> r,
 894                          boost::shared_ptr<PeakMeter> meter,
 895                          boost::shared_ptr<Amp> amp)
 896 {
 897         if (meter_alignment.get_parent()) {
 898                 hbox.remove (meter_alignment);
 899         }
 900
 901         if (peak_display.get_parent()) {
 902                 gain_display_box.remove (peak_display);
 903         }
 904
 905         if (gain_automation_state_button.get_parent()) {
 906                 fader_vbox->remove (gain_automation_state_button);
 907         }
 908
 909         GainMeterBase::set_controls (r, meter, amp);
 910
 911         if (_meter) {
 912                 _meter->ConfigurationChanged.connect (
 913                         model_connections, invalidator (*this), boost::bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 914                         );
 915
 916                 meter_configuration_changed (_meter->input_streams ());
 917         }
 918
 919
 920         /*
 921            if we have a non-hidden route (ie. we're not the click or the auditioner),
 922            pack some route-dependent stuff.
 923         */
 924
 925         gain_display_box.pack_end (peak_display, true, true);
 926         hbox.pack_start (meter_alignment, true, true);
 927
 928         if (r && !r->is_hidden()) {
 929                 fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 930         }
 931
 932         setup_meters ();
 933         hbox.show_all ();
 934 }
 935
 936 int
 937 GainMeter::get_gm_width ()
 938 {
 939         Gtk::Requisition sz;
 940         hbox.size_request (sz);
 941         return sz.width;
 942 }
 943
 944 cairo_pattern_t*
 945 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 946 {
 947         Glib::RefPtr<Gdk::Window> win (w.get_window());
 948
 949         gint width, height;
 950         win->get_size (width, height);
 951
 952         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 953         cairo_t* cr = cairo_create (surface);
 954         PangoLayout* layout = gtk_widget_create_pango_layout (w.gobj(), "");
 955
 956         cairo_move_to (cr, 0, 0);
 957         cairo_rectangle (cr, 0, 0, width, height);
 958         {
 959                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 960                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 961         }
 962         cairo_fill (cr);
 963
 964         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 965
 966                 Gdk::Color c;
 967
 968                 if (types.size() > 1) {
 969                         /* we're overlaying more than 1 set of marks, so use different colours */
 970                         Gdk::Color c;
 971                         switch (*i) {
 972                         case DataType::AUDIO:
 973                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 974                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 975                                 break;
 976                         case DataType::MIDI:
 977                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
 978                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 979                                 break;
 980                         }
 981                 } else {
 982                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
 983                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 984                 }
 985
 986                 vector<int> points;
 987
 988                 switch (*i) {
 989                 case DataType::AUDIO:
 990                         points.push_back (-50);
 991                         points.push_back (-40);
 992                         points.push_back (-30);
 993                         points.push_back (-20);
 994                         points.push_back (-10);
 995                         points.push_back (-3);
 996                         points.push_back (0);
 997                         points.push_back (4);
 998                         break;
 999
1000                 case DataType::MIDI:
1001                         points.push_back (0);
1002                         if (types.size() == 1) {
1003                                 points.push_back (32);
1004                         } else {
1005                                 /* tweak so as not to overlay the -30dB mark */
1006                                 points.push_back (48);
1007                         }
1008                         points.push_back (64);
1009                         points.push_back (96);
1010                         points.push_back (127);
1011                         break;
1012                 }
1013
1014                 char buf[32];
1015
1016                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
1017
1018                         float fraction = 0;
1019                         switch (*i) {
1020                         case DataType::AUDIO:
1021                                 fraction = log_meter (*j);
1022                                 break;
1023                         case DataType::MIDI:
1024                                 fraction = *j / 127.0;
1025                                 break;
1026                         }
1027
1028                         gint const pos = height - (gint) floor (height * fraction);
1029
1030                         cairo_set_line_width (cr, 1.0);
1031                         cairo_move_to (cr, 0, pos);
1032                         cairo_line_to (cr, 4, pos);
1033                         cairo_stroke (cr);
1034
1035                         snprintf (buf, sizeof (buf), "%d", abs (*j));
1036                         pango_layout_set_text (layout, buf, strlen (buf));
1037
1038                         /* we want logical extents, not ink extents here */
1039
1040                         int tw, th;
1041                         pango_layout_get_pixel_size (layout, &tw, &th);
1042
1043                         int p = pos - (th / 2);
1044                         p = min (p, height - th);
1045                         p = max (p, 0);
1046
1047                         cairo_move_to (cr, 6, p);
1048                         pango_cairo_show_layout (cr, layout);
1049                 }
1050         }
1051
1052         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1053         MetricPatterns::iterator p;
1054
1055         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
1056                 cairo_pattern_destroy (p->second);
1057         }
1058
1059         metric_patterns[w.get_name()] = pattern;
1060
1061         cairo_destroy (cr);
1062         cairo_surface_destroy (surface);
1063         g_object_unref (layout);
1064
1065         return pattern;
1066 }
1067
1068 gint
1069 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1070 {
1071         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1072         cairo_t* cr;
1073
1074         cr = gdk_cairo_create (win->gobj());
1075
1076         /* clip to expose area */
1077
1078         gdk_cairo_rectangle (cr, &ev->area);
1079         cairo_clip (cr);
1080
1081         cairo_pattern_t* pattern;
1082         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
1083
1084         if (i == metric_patterns.end() || style_changed || dpi_changed) {
1085                 pattern = render_metrics (meter_metric_area, _types);
1086         } else {
1087                 pattern = i->second;
1088         }
1089
1090         cairo_move_to (cr, 0, 0);
1091         cairo_set_source (cr, pattern);
1092
1093         gint width, height;
1094         win->get_size (width, height);
1095
1096         cairo_rectangle (cr, 0, 0, width, height);
1097         cairo_fill (cr);
1098
1099         style_changed = false;
1100         dpi_changed = false;
1101
1102         cairo_destroy (cr);
1103
1104         return true;
1105 }
1106
1107 boost::shared_ptr<PBD::Controllable>
1108 GainMeterBase::get_controllable()
1109 {
1110         if (_amp) {
1111                 return _amp->gain_control();
1112         } else {
1113                 return boost::shared_ptr<PBD::Controllable>();
1114         }
1115 }
1116
1117 bool
1118 GainMeterBase::level_meter_button_press (GdkEventButton* ev)
1119 {
1120         return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
1121 }
1122
1123 void
1124 GainMeter::meter_configuration_changed (ChanCount c)
1125 {
1126         _types.clear ();
1127
1128         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1129                 if (c.get (*i) > 0) {
1130                         _types.push_back (*i);
1131                 }
1132         }
1133
1134         style_changed = true;
1135         meter_metric_area.queue_draw ();
1136 }
1137