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 <pangomm.h>
  29 #include <gtkmm/style.h>
  30 #include <gdkmm/color.h>
  31 #include <gtkmm2ext/utils.h>
  32 #include <gtkmm2ext/fastmeter.h>
  33 #include <gtkmm2ext/barcontroller.h>
  34 #include <gtkmm2ext/gtk_ui.h>
  35 #include "midi++/manager.h"
  36 #include "pbd/fastlog.h"
  37 #include "pbd/stacktrace.h"
  38
  39 #include "ardour_ui.h"
  40 #include "gain_meter.h"
  41 #include "global_signals.h"
  42 #include "logmeter.h"
  43 #include "gui_thread.h"
  44 #include "keyboard.h"
  45 #include "public_editor.h"
  46 #include "utils.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 std;
  59 using Gtkmm2ext::Keyboard;
  60
  61 sigc::signal<void> GainMeterBase::ResetAllPeakDisplays;
  62 sigc::signal<void,RouteGroup*> GainMeterBase::ResetGroupPeakDisplays;
  63
  64 GainMeter::MetricPatterns GainMeter::metric_patterns;
  65
  66 GainMeterBase::GainMeterBase (Session* s, bool horizontal, int fader_length, int fader_girth)
  67         : gain_adjustment (gain_to_slider_position_with_max (1.0, Config->get_max_gain()), 0.0, 1.0, 0.01, 0.1)
  68         , gain_automation_style_button ("")
  69         , gain_automation_state_button ("")
  70         , style_changed (false)
  71         , dpi_changed (false)
  72         , _data_type (DataType::AUDIO)
  73
  74 {
  75         using namespace Menu_Helpers;
  76
  77         set_session (s);
  78
  79         ignore_toggle = false;
  80         meter_menu = 0;
  81         next_release_selects = false;
  82         _width = Wide;
  83
  84         if (horizontal) {
  85                 gain_slider = manage (new HSliderController (&gain_adjustment, fader_length, fader_girth, false));
  86         } else {
  87                 gain_slider = manage (new VSliderController (&gain_adjustment, fader_length, fader_girth, false));
  88         }
  89
  90         level_meter = new LevelMeter(_session);
  91
  92         level_meter->ButtonPress.connect_same_thread (_level_meter_connection, boost::bind (&GainMeterBase::level_meter_button_press, this, _1));
  93         meter_metric_area.signal_button_press_event().connect (sigc::mem_fun (*this, &GainMeterBase::level_meter_button_press));
  94         meter_metric_area.add_events (Gdk::BUTTON_PRESS_MASK);
  95
  96         gain_slider->signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_press), false);
  97         gain_slider->signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeter::gain_slider_button_release), false);
  98         gain_slider->set_name ("GainFader");
  99
 100         gain_display.set_name ("MixerStripGainDisplay");
 101         set_size_request_to_display_given_text (gain_display, "-80.g", 2, 6); /* note the descender */
 102         gain_display.signal_activate().connect (sigc::mem_fun (*this, &GainMeter::gain_activated));
 103         gain_display.signal_focus_in_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 104         gain_display.signal_focus_out_event().connect (sigc::mem_fun (*this, &GainMeter::gain_focused), false);
 105
 106         peak_display.set_name ("MixerStripPeakDisplay");
 107         set_size_request_to_display_given_text (peak_display, "-80.g", 2, 6); /* note the descender */
 108         max_peak = minus_infinity();
 109         peak_display.set_label (_("-inf"));
 110         peak_display.unset_flags (Gtk::CAN_FOCUS);
 111
 112         gain_automation_style_button.set_name ("mixer strip button");
 113         gain_automation_state_button.set_name ("mixer strip button");
 114
 115         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 116         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 117
 118         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 119         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 120
 121         gain_automation_state_button.set_size_request(15, 15);
 122         gain_automation_style_button.set_size_request(15, 15);
 123
 124         gain_astyle_menu.items().push_back (MenuElem (_("Trim")));
 125         gain_astyle_menu.items().push_back (MenuElem (_("Abs")));
 126
 127         gain_astate_menu.set_name ("ArdourContextMenu");
 128         gain_astyle_menu.set_name ("ArdourContextMenu");
 129
 130         gain_adjustment.signal_value_changed().connect (sigc::mem_fun(*this, &GainMeterBase::gain_adjusted));
 131         peak_display.signal_button_release_event().connect (sigc::mem_fun(*this, &GainMeterBase::peak_button_release), false);
 132         gain_display.signal_key_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_key_press), false);
 133
 134         ResetAllPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_peak_display));
 135         ResetGroupPeakDisplays.connect (sigc::mem_fun(*this, &GainMeterBase::reset_group_peak_display));
 136
 137         UI::instance()->theme_changed.connect (sigc::mem_fun(*this, &GainMeterBase::on_theme_changed));
 138         ColorsChanged.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), false));
 139         DPIReset.connect (sigc::bind(sigc::mem_fun (*this, &GainMeterBase::color_handler), true));
 140
 141 //      PBD::ScopedConnection _config_connection;
 142 //      Config->ParameterChanged.connect ( _config_connection, MISSING_INVALIDATOR, boost::bind(&GainMeterBase::set_flat_buttons, this, _1), gui_context() );
 143 }
 144
 145 void
 146 GainMeterBase::set_flat_buttons ()
 147 {
 148 printf("set_flat_butt\n");
 149 //      gain_slider->set_flat_buttons( ARDOUR_UI::config()->get_flat_buttons() );
 150 }
 151
 152 GainMeterBase::~GainMeterBase ()
 153 {
 154         delete meter_menu;
 155         delete level_meter;
 156 }
 157
 158 void
 159 GainMeterBase::set_controls (boost::shared_ptr<Route> r,
 160                              boost::shared_ptr<PeakMeter> pm,
 161                              boost::shared_ptr<Amp> amp)
 162 {
 163         connections.clear ();
 164         model_connections.drop_connections ();
 165
 166         if (!pm && !amp) {
 167                 level_meter->set_meter (0);
 168                 gain_slider->set_controllable (boost::shared_ptr<PBD::Controllable>());
 169                 _meter.reset ();
 170                 _amp.reset ();
 171                 _route.reset ();
 172                 return;
 173         }
 174
 175         _meter = pm;
 176         _amp = amp;
 177         _route = r;
 178
 179         level_meter->set_meter (pm.get());
 180         gain_slider->set_controllable (amp->gain_control());
 181
 182         if (amp) {
 183                 amp->ConfigurationChanged.connect (
 184                         model_connections, invalidator (*this), boost::bind (&GainMeterBase::setup_gain_adjustment, this), gui_context ()
 185                         );
 186         }
 187
 188         setup_gain_adjustment ();
 189
 190         if (!_route || !_route->is_auditioner()) {
 191
 192                 using namespace Menu_Helpers;
 193
 194                 gain_astate_menu.items().clear ();
 195
 196                 gain_astate_menu.items().push_back (MenuElem (S_("Automation|Manual"),
 197                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 198                                                                           Evoral::Parameter(GainAutomation), (AutoState) ARDOUR::Off)));
 199                 gain_astate_menu.items().push_back (MenuElem (_("Play"),
 200                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 201                                                                     Evoral::Parameter(GainAutomation), (AutoState) Play)));
 202                 gain_astate_menu.items().push_back (MenuElem (_("Write"),
 203                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 204                                                                     Evoral::Parameter(GainAutomation), (AutoState) Write)));
 205                 gain_astate_menu.items().push_back (MenuElem (_("Touch"),
 206                                                               sigc::bind (sigc::mem_fun (*(amp.get()), &Automatable::set_parameter_automation_state),
 207                                                                     Evoral::Parameter(GainAutomation), (AutoState) Touch)));
 208
 209                 connections.push_back (gain_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_style_button_event), false));
 210                 connections.push_back (gain_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &GainMeterBase::gain_automation_state_button_event), false));
 211
 212                 boost::shared_ptr<AutomationControl> gc = amp->gain_control();
 213
 214                 gc->alist()->automation_state_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_state_changed, this), gui_context());
 215                 gc->alist()->automation_style_changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeter::gain_automation_style_changed, this), gui_context());
 216
 217                 gain_automation_state_changed ();
 218         }
 219
 220         amp->gain_control()->Changed.connect (model_connections, invalidator (*this), boost::bind (&GainMeterBase::gain_changed, this), gui_context());
 221
 222         gain_changed ();
 223         show_gain ();
 224         update_gain_sensitive ();
 225 }
 226
 227 void
 228 GainMeterBase::setup_gain_adjustment ()
 229 {
 230         if (!_amp) {
 231                 return;
 232         }
 233
 234         if (_previous_amp_output_streams == _amp->output_streams ()) {
 235                 return;
 236         }
 237
 238         ignore_toggle = true;
 239
 240         if (_amp->output_streams().n_midi() <=  _amp->output_streams().n_audio()) {
 241                 _data_type = DataType::AUDIO;
 242                 gain_adjustment.set_lower (0.0);
 243                 gain_adjustment.set_upper (1.0);
 244                 gain_adjustment.set_step_increment (0.01);
 245                 gain_adjustment.set_page_increment (0.1);
 246                 gain_slider->set_default_value (gain_to_slider_position (1));
 247         } else {
 248                 _data_type = DataType::MIDI;
 249                 gain_adjustment.set_lower (0.0);
 250                 gain_adjustment.set_upper (2.0);
 251                 gain_adjustment.set_step_increment (1.0/128.0);
 252                 gain_adjustment.set_page_increment (10.0/128.0);
 253                 gain_slider->set_default_value (1.0);
 254         }
 255
 256         ignore_toggle = false;
 257
 258         effective_gain_display ();
 259
 260         _previous_amp_output_streams = _amp->output_streams ();
 261 }
 262
 263 void
 264 GainMeterBase::hide_all_meters ()
 265 {
 266         level_meter->hide_meters();
 267 }
 268
 269 void
 270 GainMeter::hide_all_meters ()
 271 {
 272         bool remove_metric_area = false;
 273
 274         GainMeterBase::hide_all_meters ();
 275
 276         if (remove_metric_area) {
 277                 if (meter_metric_area.get_parent()) {
 278                         level_meter->remove (meter_metric_area);
 279                 }
 280         }
 281 }
 282
 283 void
 284 GainMeterBase::setup_meters (int len)
 285 {
 286         level_meter->setup_meters(len, 5);
 287 }
 288
 289 void
 290 GainMeter::setup_meters (int len)
 291 {
 292         if (!meter_metric_area.get_parent()) {
 293                 level_meter->pack_end (meter_metric_area, false, false);
 294                 meter_metric_area.show_all ();
 295         }
 296         GainMeterBase::setup_meters (len);
 297 }
 298
 299 bool
 300 GainMeterBase::gain_key_press (GdkEventKey* ev)
 301 {
 302         if (key_is_legal_for_numeric_entry (ev->keyval)) {
 303                 /* drop through to normal handling */
 304                 return false;
 305         }
 306         /* illegal key for gain entry */
 307         return true;
 308 }
 309
 310 bool
 311 GainMeterBase::peak_button_release (GdkEventButton* ev)
 312 {
 313         /* reset peak label */
 314
 315         if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier|Keyboard::TertiaryModifier)) {
 316                 ResetAllPeakDisplays ();
 317         } else if (ev->button == 1 && Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 318                 if (_route) {
 319                         ResetGroupPeakDisplays (_route->route_group());
 320                 }
 321         } else {
 322                 reset_peak_display ();
 323         }
 324
 325         return true;
 326 }
 327
 328 void
 329 GainMeterBase::reset_peak_display ()
 330 {
 331         _meter->reset_max();
 332         level_meter->clear_meters();
 333         max_peak = -INFINITY;
 334         peak_display.set_label (_("-Inf"));
 335         peak_display.set_name ("MixerStripPeakDisplay");
 336 }
 337
 338 void
 339 GainMeterBase::reset_group_peak_display (RouteGroup* group)
 340 {
 341         if (_route && group == _route->route_group()) {
 342                 reset_peak_display ();
 343         }
 344 }
 345
 346 void
 347 GainMeterBase::popup_meter_menu (GdkEventButton *ev)
 348 {
 349         using namespace Menu_Helpers;
 350
 351         if (meter_menu == 0) {
 352                 meter_menu = new Gtk::Menu;
 353                 MenuList& items = meter_menu->items();
 354
 355                 items.push_back (MenuElem ("-inf .. +0dBFS"));
 356                 items.push_back (MenuElem ("-10dB .. +0dBFS"));
 357                 items.push_back (MenuElem ("-4 .. +0dBFS"));
 358                 items.push_back (SeparatorElem());
 359                 items.push_back (MenuElem ("-inf .. -2dBFS"));
 360                 items.push_back (MenuElem ("-10dB .. -2dBFS"));
 361                 items.push_back (MenuElem ("-4 .. -2dBFS"));
 362         }
 363
 364         meter_menu->popup (1, ev->time);
 365 }
 366
 367 bool
 368 GainMeterBase::gain_focused (GdkEventFocus* ev)
 369 {
 370         if (ev->in) {
 371                 gain_display.select_region (0, -1);
 372         } else {
 373                 gain_display.select_region (0, 0);
 374         }
 375         return false;
 376 }
 377
 378 void
 379 GainMeterBase::gain_activated ()
 380 {
 381         float f;
 382
 383         {
 384                 // Switch to user's preferred locale so that
 385                 // if they use different LC_NUMERIC conventions,
 386                 // we will honor them.
 387
 388                 PBD::LocaleGuard lg ("");
 389                 if (sscanf (gain_display.get_text().c_str(), "%f", &f) != 1) {
 390                         return;
 391                 }
 392         }
 393
 394         /* clamp to displayable values */
 395         if (_data_type == DataType::AUDIO) {
 396                 f = min (f, 6.0f);
 397                 _amp->set_gain (dB_to_coefficient(f), this);
 398         } else {
 399                 f = min (fabs (f), 2.0f);
 400                 _amp->set_gain (f, this);
 401         }
 402
 403         if (gain_display.has_focus()) {
 404                 Gtk::Widget* w = gain_display.get_toplevel();
 405                 if (w) {
 406                         Gtk::Window* win = dynamic_cast<Gtk::Window*> (w);
 407
 408                         /* sigh. gtkmm doesn't wrap get_default_widget() */
 409
 410                         if (win) {
 411                                 GtkWidget* f = gtk_window_get_default_widget (win->gobj());
 412                                 if (f) {
 413                                         gtk_widget_grab_focus (f);
 414                                         return;
 415                                 }
 416                         }
 417                 }
 418         }
 419 }
 420
 421 void
 422 GainMeterBase::show_gain ()
 423 {
 424         char buf[32];
 425
 426         float v = gain_adjustment.get_value();
 427
 428         switch (_data_type) {
 429         case DataType::AUDIO:
 430                 if (v == 0.0) {
 431                         strcpy (buf, _("-inf"));
 432                 } else {
 433                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
 434                 }
 435                 break;
 436         case DataType::MIDI:
 437                 snprintf (buf, sizeof (buf), "%.1f", v);
 438                 break;
 439         }
 440
 441         gain_display.set_text (buf);
 442 }
 443
 444 void
 445 GainMeterBase::gain_adjusted ()
 446 {
 447         gain_t value;
 448
 449         /* convert from adjustment range (0..1) to gain coefficient */
 450
 451         if (_data_type == DataType::AUDIO) {
 452                 value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
 453         } else {
 454                 value = gain_adjustment.get_value();
 455         }
 456
 457         if (!ignore_toggle) {
 458                 if (_route && _route->amp() == _amp) {
 459                         _route->set_gain (value, this);
 460                 } else {
 461                         _amp->set_gain (value, this);
 462                 }
 463         }
 464
 465         show_gain ();
 466 }
 467
 468 void
 469 GainMeterBase::effective_gain_display ()
 470 {
 471         float value = 0.0;
 472
 473         switch (_data_type) {
 474         case DataType::AUDIO:
 475                 value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
 476                 break;
 477         case DataType::MIDI:
 478                 value = _amp->gain ();
 479                 break;
 480         }
 481
 482         if (gain_adjustment.get_value() != value) {
 483                 ignore_toggle = true;
 484                 gain_adjustment.set_value (value);
 485                 ignore_toggle = false;
 486         }
 487 }
 488
 489 void
 490 GainMeterBase::gain_changed ()
 491 {
 492         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 493 }
 494
 495 void
 496 GainMeterBase::set_meter_strip_name (const char * name)
 497 {
 498         meter_metric_area.set_name (name);
 499 }
 500
 501 void
 502 GainMeterBase::set_fader_name (const char * name)
 503 {
 504         gain_slider->set_name (name);
 505 }
 506
 507 void
 508 GainMeterBase::update_gain_sensitive ()
 509 {
 510         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 511         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 512 }
 513
 514 static MeterPoint
 515 next_meter_point (MeterPoint mp)
 516 {
 517         switch (mp) {
 518         case MeterInput:
 519                 return MeterPreFader;
 520                 break;
 521
 522         case MeterPreFader:
 523                 return MeterPostFader;
 524                 break;
 525
 526         case MeterPostFader:
 527                 return MeterOutput;
 528                 break;
 529
 530         case MeterOutput:
 531                 return MeterCustom;
 532                 break;
 533
 534         case MeterCustom:
 535                 return MeterInput;
 536                 break;
 537         }
 538
 539         /*NOTREACHED*/
 540         return MeterInput;
 541 }
 542
 543 gint
 544 GainMeterBase::meter_press(GdkEventButton* ev)
 545 {
 546         wait_for_release = false;
 547
 548         if (!_route) {
 549                 return FALSE;
 550         }
 551
 552         if (!ignore_toggle) {
 553
 554                 if (Keyboard::is_context_menu_event (ev)) {
 555
 556                         // no menu at this time.
 557
 558                 } else {
 559
 560                         if (Keyboard::is_button2_event(ev)) {
 561
 562                                 // Primary-button2 click is the midi binding click
 563                                 // button2-click is "momentary"
 564
 565                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 566                                         wait_for_release = true;
 567                                         old_meter_point = _route->meter_point ();
 568                                 }
 569                         }
 570
 571                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 572
 573                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 574
 575                                         /* Primary+Tertiary-click applies change to all routes */
 576
 577                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 578
 579
 580                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 581
 582                                         /* Primary-click: solo mix group.
 583                                            NOTE: Primary-button2 is MIDI learn.
 584                                         */
 585
 586                                         if (ev->button == 1) {
 587                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 588                                         }
 589
 590                                 } else {
 591
 592                                         /* click: change just this route */
 593
 594                                         // XXX no undo yet
 595
 596                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 597                                 }
 598                         }
 599                 }
 600         }
 601
 602         return true;
 603
 604 }
 605
 606 gint
 607 GainMeterBase::meter_release(GdkEventButton*)
 608 {
 609         if (!ignore_toggle) {
 610                 if (wait_for_release) {
 611                         wait_for_release = false;
 612
 613                         if (_route) {
 614                                 set_meter_point (*_route, old_meter_point);
 615                         }
 616                 }
 617         }
 618
 619         return true;
 620 }
 621
 622 void
 623 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 624 {
 625         route.set_meter_point (mp);
 626 }
 627
 628 void
 629 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 630 {
 631         RouteGroup* route_group;
 632
 633         if ((route_group = route.route_group ()) != 0) {
 634                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 635         } else {
 636                 route.set_meter_point (mp);
 637         }
 638 }
 639
 640 void
 641 GainMeterBase::meter_point_clicked ()
 642 {
 643         if (_route) {
 644                 /* WHAT? */
 645         }
 646 }
 647
 648 bool
 649 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 650 {
 651         switch (ev->type) {
 652         case GDK_BUTTON_PRESS:
 653                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 654                 break;
 655         default:
 656                 return false;
 657         }
 658
 659         return false;
 660 }
 661
 662 bool
 663 GainMeterBase::gain_slider_button_release (GdkEventButton*)
 664 {
 665         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 666         return false;
 667 }
 668
 669 gint
 670 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 671 {
 672         if (ev->type == GDK_BUTTON_RELEASE) {
 673                 return TRUE;
 674         }
 675
 676         switch (ev->button) {
 677                 case 1:
 678                         gain_astate_menu.popup (1, ev->time);
 679                         break;
 680                 default:
 681                         break;
 682         }
 683
 684         return TRUE;
 685 }
 686
 687 gint
 688 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 689 {
 690         if (ev->type == GDK_BUTTON_RELEASE) {
 691                 return TRUE;
 692         }
 693
 694         switch (ev->button) {
 695         case 1:
 696                 gain_astyle_menu.popup (1, ev->time);
 697                 break;
 698         default:
 699                 break;
 700         }
 701         return TRUE;
 702 }
 703
 704 string
 705 GainMeterBase::astate_string (AutoState state)
 706 {
 707         return _astate_string (state, false);
 708 }
 709
 710 string
 711 GainMeterBase::short_astate_string (AutoState state)
 712 {
 713         return _astate_string (state, true);
 714 }
 715
 716 string
 717 GainMeterBase::_astate_string (AutoState state, bool shrt)
 718 {
 719         string sstr;
 720
 721         switch (state) {
 722         case ARDOUR::Off:
 723                 sstr = (shrt ? "M" : _("M"));
 724                 break;
 725         case Play:
 726                 sstr = (shrt ? "P" : _("P"));
 727                 break;
 728         case Touch:
 729                 sstr = (shrt ? "T" : _("T"));
 730                 break;
 731         case Write:
 732                 sstr = (shrt ? "W" : _("W"));
 733                 break;
 734         }
 735
 736         return sstr;
 737 }
 738
 739 string
 740 GainMeterBase::astyle_string (AutoStyle style)
 741 {
 742         return _astyle_string (style, false);
 743 }
 744
 745 string
 746 GainMeterBase::short_astyle_string (AutoStyle style)
 747 {
 748         return _astyle_string (style, true);
 749 }
 750
 751 string
 752 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 753 {
 754         if (style & Trim) {
 755                 return _("Trim");
 756         } else {
 757                 /* XXX it might different in different languages */
 758
 759                 return (shrt ? _("Abs") : _("Abs"));
 760         }
 761 }
 762
 763 void
 764 GainMeterBase::gain_automation_style_changed ()
 765 {
 766         switch (_width) {
 767         case Wide:
 768                 gain_automation_style_button.set_text (astyle_string(_amp->gain_control()->alist()->automation_style()));
 769                 break;
 770         case Narrow:
 771                 gain_automation_style_button.set_text  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 772                 break;
 773         }
 774 }
 775
 776 void
 777 GainMeterBase::gain_automation_state_changed ()
 778 {
 779         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 780
 781         bool x;
 782
 783         switch (_width) {
 784         case Wide:
 785                 gain_automation_state_button.set_text (astate_string(_amp->gain_control()->alist()->automation_state()));
 786                 break;
 787         case Narrow:
 788                 gain_automation_state_button.set_text (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 789                 break;
 790         }
 791
 792         x = (_amp->gain_control()->alist()->automation_state() != ARDOUR::Off);
 793
 794         if (gain_automation_state_button.get_active() != x) {
 795                 ignore_toggle = true;
 796                 gain_automation_state_button.set_active (x);
 797                 ignore_toggle = false;
 798         }
 799
 800         update_gain_sensitive ();
 801
 802         /* start watching automation so that things move */
 803
 804         gain_watching.disconnect();
 805
 806         if (x) {
 807                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 808         }
 809 }
 810
 811 void
 812 GainMeterBase::update_meters()
 813 {
 814         char buf[32];
 815         float mpeak = level_meter->update_meters();
 816
 817         if (mpeak > max_peak) {
 818                 max_peak = mpeak;
 819                 if (mpeak <= -200.0f) {
 820                         peak_display.set_label (_("-inf"));
 821                 } else {
 822                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 823                         peak_display.set_label (buf);
 824                 }
 825
 826                 if (mpeak >= 0.0f) {
 827                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 828                 }
 829         }
 830 }
 831
 832 void GainMeterBase::color_handler(bool dpi)
 833 {
 834         color_changed = true;
 835         dpi_changed = (dpi) ? true : false;
 836         setup_meters();
 837 }
 838
 839 void
 840 GainMeterBase::set_width (Width w, int len)
 841 {
 842         _width = w;
 843         level_meter->setup_meters (len);
 844 }
 845
 846
 847 void
 848 GainMeterBase::on_theme_changed()
 849 {
 850         style_changed = true;
 851 }
 852
 853 GainMeter::GainMeter (Session* s, int fader_length)
 854         : GainMeterBase (s, false, fader_length, 24)
 855         , gain_display_box(true, 0)
 856         , hbox(true, 2)
 857 {
 858         if (gain_display.get_parent()) {
 859                 gain_display.get_parent()->remove (gain_display);
 860         }
 861         gain_display_box.pack_start (gain_display, true, true);
 862
 863         meter_metric_area.set_name ("AudioTrackMetrics");
 864         set_size_request_to_display_given_text (meter_metric_area, "-127", 1, 0);
 865
 866         gain_automation_style_button.set_name ("mixer strip button");
 867         gain_automation_state_button.set_name ("mixer strip button");
 868
 869         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 870         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 871
 872         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 873         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 874
 875         gain_automation_state_button.set_size_request(15, 15);
 876         gain_automation_style_button.set_size_request(15, 15);
 877
 878         fader_vbox = manage (new Gtk::VBox());
 879         fader_vbox->set_spacing (0);
 880         fader_vbox->pack_start (*gain_slider, true, true);
 881
 882         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 883         fader_alignment.add (*fader_vbox);
 884
 885         hbox.pack_start (fader_alignment, true, true);
 886
 887         set_spacing (2);
 888
 889         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 890         pack_start (hbox, Gtk::PACK_SHRINK);
 891
 892         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 893         meter_alignment.add (*level_meter);
 894
 895         meter_metric_area.signal_expose_event().connect (
 896                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 897 }
 898
 899 void
 900 GainMeter::set_controls (boost::shared_ptr<Route> r,
 901                          boost::shared_ptr<PeakMeter> meter,
 902                          boost::shared_ptr<Amp> amp)
 903 {
 904         if (meter_alignment.get_parent()) {
 905                 hbox.remove (meter_alignment);
 906         }
 907
 908 //      if (gain_automation_state_button.get_parent()) {
 909 //              fader_vbox->remove (gain_automation_state_button);
 910 //      }
 911
 912         GainMeterBase::set_controls (r, meter, amp);
 913
 914         if (_meter) {
 915                 _meter->ConfigurationChanged.connect (
 916                         model_connections, invalidator (*this), boost::bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 917                         );
 918
 919                 meter_configuration_changed (_meter->input_streams ());
 920         }
 921
 922
 923         /*
 924            if we have a non-hidden route (ie. we're not the click or the auditioner),
 925            pack some route-dependent stuff.
 926         */
 927
 928         hbox.pack_start (meter_alignment, true, true);
 929
 930 //      if (r && !r->is_auditioner()) {
 931 //              fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 932 //      }
 933
 934         setup_meters ();
 935         hbox.show_all ();
 936 }
 937
 938 int
 939 GainMeter::get_gm_width ()
 940 {
 941         Gtk::Requisition sz;
 942         hbox.size_request (sz);
 943         return sz.width;
 944 }
 945
 946 cairo_pattern_t*
 947 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 948 {
 949         Glib::RefPtr<Gdk::Window> win (w.get_window());
 950
 951         gint width, height;
 952         win->get_size (width, height);
 953
 954         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 955         cairo_t* cr = cairo_create (surface);
 956         Glib::RefPtr<Pango::Layout> layout = Pango::Layout::create(w.get_pango_context());
 957
 958
 959         Pango::AttrList audio_font_attributes;
 960         Pango::AttrList midi_font_attributes;
 961
 962         Pango::AttrFontDesc* font_attr;
 963         Pango::FontDescription font;
 964
 965         font = Pango::FontDescription (""); // use defaults
 966         //font = get_font_for_style("gain-fader");
 967         //font = w.get_style()->get_font();
 968
 969         font.set_weight (Pango::WEIGHT_NORMAL);
 970         font.set_size (10.0 * PANGO_SCALE);
 971         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 972         audio_font_attributes.change (*font_attr);
 973         delete font_attr;
 974
 975         font.set_weight (Pango::WEIGHT_ULTRALIGHT);
 976         font.set_stretch (Pango::STRETCH_ULTRA_CONDENSED);
 977         font.set_size (7.5 * PANGO_SCALE);
 978         font_attr = new Pango::AttrFontDesc (Pango::Attribute::create_attr_font_desc (font));
 979         midi_font_attributes.change (*font_attr);
 980         delete font_attr;
 981
 982
 983         cairo_move_to (cr, 0, 0);
 984         cairo_rectangle (cr, 0, 0, width, height);
 985         {
 986                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 987                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 988         }
 989         cairo_fill (cr);
 990
 991         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 992
 993                 Gdk::Color c;
 994
 995                 if (types.size() > 1) {
 996                         /* we're overlaying more than 1 set of marks, so use different colours */
 997                         Gdk::Color c;
 998                         switch (*i) {
 999                         case DataType::AUDIO:
1000                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1001                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1002                                 break;
1003                         case DataType::MIDI:
1004                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
1005                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1006                                 break;
1007                         }
1008                 } else {
1009                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1010                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1011                 }
1012
1013                 vector<int> points;
1014
1015                 switch (*i) {
1016                 case DataType::AUDIO:
1017                         layout->set_attributes (audio_font_attributes);
1018                         points.push_back (-50);
1019                         points.push_back (-40);
1020                         points.push_back (-30);
1021                         points.push_back (-20);
1022                         points.push_back (-10);
1023                         points.push_back (-3);
1024                         points.push_back (0);
1025                         points.push_back (4);
1026                         break;
1027
1028                 case DataType::MIDI:
1029                         layout->set_attributes (midi_font_attributes);
1030                         points.push_back (0);
1031                         if (types.size() == 1) {
1032                                 points.push_back (32);
1033                         } else {
1034                                 /* tweak so as not to overlay the -30dB mark */
1035                                 points.push_back (48);
1036                         }
1037                         points.push_back (64);
1038                         points.push_back (96);
1039                         points.push_back (127);
1040                         break;
1041                 }
1042
1043                 char buf[32];
1044
1045                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
1046
1047                         float fraction = 0;
1048                         switch (*i) {
1049                         case DataType::AUDIO:
1050                                 fraction = log_meter (*j);
1051                                 break;
1052                         case DataType::MIDI:
1053                                 fraction = *j / 127.0;
1054                                 break;
1055                         }
1056
1057                         gint const pos = height - (gint) floor (height * fraction);
1058
1059                         cairo_set_line_width (cr, 1.0);
1060                         cairo_move_to (cr, 0, pos);
1061                         cairo_line_to (cr, 3.5, pos);
1062                         cairo_stroke (cr);
1063
1064                         snprintf (buf, sizeof (buf), "%2d", abs (*j));
1065                         layout->set_text(buf);
1066
1067                         /* we want logical extents, not ink extents here */
1068
1069                         int tw, th;
1070                         layout->get_pixel_size(tw, th);
1071
1072                         int p = pos - (th / 2);
1073                         p = min (p, height - th);
1074                         p = max (p, 0);
1075
1076                         cairo_move_to (cr, 5, p);
1077                         pango_cairo_show_layout (cr, layout->gobj());
1078                 }
1079         }
1080
1081         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1082         MetricPatterns::iterator p;
1083
1084         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
1085                 cairo_pattern_destroy (p->second);
1086         }
1087
1088         metric_patterns[w.get_name()] = pattern;
1089
1090         cairo_destroy (cr);
1091         cairo_surface_destroy (surface);
1092
1093         return pattern;
1094 }
1095
1096 gint
1097 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1098 {
1099         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1100         cairo_t* cr;
1101
1102         cr = gdk_cairo_create (win->gobj());
1103
1104         /* clip to expose area */
1105
1106         gdk_cairo_rectangle (cr, &ev->area);
1107         cairo_clip (cr);
1108
1109         cairo_pattern_t* pattern;
1110         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
1111
1112         if (i == metric_patterns.end() || style_changed || dpi_changed) {
1113                 pattern = render_metrics (meter_metric_area, _types);
1114         } else {
1115                 pattern = i->second;
1116         }
1117
1118         cairo_move_to (cr, 0, 0);
1119         cairo_set_source (cr, pattern);
1120
1121         gint width, height;
1122         win->get_size (width, height);
1123
1124         cairo_rectangle (cr, 0, 0, width, height);
1125         cairo_fill (cr);
1126
1127         style_changed = false;
1128         dpi_changed = false;
1129
1130         cairo_destroy (cr);
1131
1132         return true;
1133 }
1134
1135 boost::shared_ptr<PBD::Controllable>
1136 GainMeterBase::get_controllable()
1137 {
1138         if (_amp) {
1139                 return _amp->gain_control();
1140         } else {
1141                 return boost::shared_ptr<PBD::Controllable>();
1142         }
1143 }
1144
1145 bool
1146 GainMeterBase::level_meter_button_press (GdkEventButton* ev)
1147 {
1148         return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
1149 }
1150
1151 void
1152 GainMeter::meter_configuration_changed (ChanCount c)
1153 {
1154         _types.clear ();
1155
1156         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1157                 if (c.get (*i) > 0) {
1158                         _types.push_back (*i);
1159                 }
1160         }
1161
1162         style_changed = true;
1163         meter_metric_area.queue_draw ();
1164 }
1165