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                 Gtk::Widget* w = gain_display.get_toplevel();
 431                 if (w) {
 432                         Gtk::Window* win = dynamic_cast<Gtk::Window*> (w);
 433
 434                         /* sigh. gtkmm doesn't wrap get_default_widget() */
 435
 436                         if (win) {
 437                                 GtkWidget* f = gtk_window_get_default_widget (win->gobj());
 438                                 if (f) {
 439                                         gtk_widget_grab_focus (f);
 440                                         return;
 441                                 }
 442                         }
 443                 }
 444         }
 445 }
 446
 447 void
 448 GainMeterBase::show_gain ()
 449 {
 450         char buf[32];
 451
 452         float v = gain_adjustment.get_value();
 453
 454         switch (_data_type) {
 455         case DataType::AUDIO:
 456                 if (v == 0.0) {
 457                         strcpy (buf, _("-inf"));
 458                 } else {
 459                         snprintf (buf, sizeof (buf), "%.1f", accurate_coefficient_to_dB (slider_position_to_gain_with_max (v, Config->get_max_gain())));
 460                 }
 461                 break;
 462         case DataType::MIDI:
 463                 snprintf (buf, sizeof (buf), "%.1f", v);
 464                 break;
 465         }
 466
 467         gain_display.set_text (buf);
 468 }
 469
 470 void
 471 GainMeterBase::gain_adjusted ()
 472 {
 473         gain_t value;
 474
 475         /* convert from adjustment range (0..1) to gain coefficient */
 476
 477         if (_data_type == DataType::AUDIO) {
 478                 value = slider_position_to_gain_with_max (gain_adjustment.get_value(), Config->get_max_gain());
 479         } else {
 480                 value = gain_adjustment.get_value();
 481         }
 482
 483         if (!ignore_toggle) {
 484                 if (_route && _route->amp() == _amp) {
 485                         _route->set_gain (value, this);
 486                 } else {
 487                         _amp->set_gain (value, this);
 488                 }
 489         }
 490
 491         show_gain ();
 492 }
 493
 494 void
 495 GainMeterBase::effective_gain_display ()
 496 {
 497         float value = 0.0;
 498
 499         switch (_data_type) {
 500         case DataType::AUDIO:
 501                 value = gain_to_slider_position_with_max (_amp->gain(), Config->get_max_gain());
 502                 break;
 503         case DataType::MIDI:
 504                 value = _amp->gain ();
 505                 break;
 506         }
 507
 508         if (gain_adjustment.get_value() != value) {
 509                 ignore_toggle = true;
 510                 gain_adjustment.set_value (value);
 511                 ignore_toggle = false;
 512         }
 513 }
 514
 515 void
 516 GainMeterBase::gain_changed ()
 517 {
 518         Gtkmm2ext::UI::instance()->call_slot (invalidator (*this), boost::bind (&GainMeterBase::effective_gain_display, this));
 519 }
 520
 521 void
 522 GainMeterBase::set_meter_strip_name (const char * name)
 523 {
 524         meter_metric_area.set_name (name);
 525 }
 526
 527 void
 528 GainMeterBase::set_fader_name (const char * name)
 529 {
 530         uint32_t rgb_active = rgba_from_style (name, 0xff, 0, 0xff, 0, "bg", STATE_ACTIVE, false);
 531         uint32_t rgb_normal = rgba_from_style (name, 0xff, 0xff, 0, 0, "bg", STATE_NORMAL, false);
 532
 533         gain_slider->set_border_colors (rgb_normal, rgb_active);
 534 }
 535
 536 void
 537 GainMeterBase::update_gain_sensitive ()
 538 {
 539         bool x = !(_amp->gain_control()->alist()->automation_state() & Play);
 540         static_cast<Gtkmm2ext::SliderController*>(gain_slider)->set_sensitive (x);
 541         gain_slider->create_patterns();
 542 }
 543
 544 static MeterPoint
 545 next_meter_point (MeterPoint mp)
 546 {
 547         switch (mp) {
 548         case MeterInput:
 549                 return MeterPreFader;
 550                 break;
 551
 552         case MeterPreFader:
 553                 return MeterPostFader;
 554                 break;
 555
 556         case MeterPostFader:
 557                 return MeterOutput;
 558                 break;
 559
 560         case MeterOutput:
 561                 return MeterCustom;
 562                 break;
 563
 564         case MeterCustom:
 565                 return MeterInput;
 566                 break;
 567         }
 568
 569         /*NOTREACHED*/
 570         return MeterInput;
 571 }
 572
 573 gint
 574 GainMeterBase::meter_press(GdkEventButton* ev)
 575 {
 576         wait_for_release = false;
 577
 578         if (!_route) {
 579                 return FALSE;
 580         }
 581
 582         if (!ignore_toggle) {
 583
 584                 if (Keyboard::is_context_menu_event (ev)) {
 585
 586                         // no menu at this time.
 587
 588                 } else {
 589
 590                         if (Keyboard::is_button2_event(ev)) {
 591
 592                                 // Primary-button2 click is the midi binding click
 593                                 // button2-click is "momentary"
 594
 595                                 if (!Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier))) {
 596                                         wait_for_release = true;
 597                                         old_meter_point = _route->meter_point ();
 598                                 }
 599                         }
 600
 601                         if (_route && (ev->button == 1 || Keyboard::is_button2_event (ev))) {
 602
 603                                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::ModifierMask (Keyboard::PrimaryModifier|Keyboard::TertiaryModifier))) {
 604
 605                                         /* Primary+Tertiary-click applies change to all routes */
 606
 607                                         _session->foreach_route (this, &GainMeterBase::set_meter_point, next_meter_point (_route->meter_point()));
 608
 609
 610                                 } else if (Keyboard::modifier_state_equals (ev->state, Keyboard::PrimaryModifier)) {
 611
 612                                         /* Primary-click: solo mix group.
 613                                            NOTE: Primary-button2 is MIDI learn.
 614                                         */
 615
 616                                         if (ev->button == 1) {
 617                                                 set_route_group_meter_point (*_route, next_meter_point (_route->meter_point()));
 618                                         }
 619
 620                                 } else {
 621
 622                                         /* click: change just this route */
 623
 624                                         // XXX no undo yet
 625
 626                                         _route->set_meter_point (next_meter_point (_route->meter_point()));
 627                                 }
 628                         }
 629                 }
 630         }
 631
 632         return true;
 633
 634 }
 635
 636 gint
 637 GainMeterBase::meter_release(GdkEventButton*)
 638 {
 639         if (!ignore_toggle) {
 640                 if (wait_for_release) {
 641                         wait_for_release = false;
 642
 643                         if (_route) {
 644                                 set_meter_point (*_route, old_meter_point);
 645                         }
 646                 }
 647         }
 648
 649         return true;
 650 }
 651
 652 void
 653 GainMeterBase::set_meter_point (Route& route, MeterPoint mp)
 654 {
 655         route.set_meter_point (mp);
 656 }
 657
 658 void
 659 GainMeterBase::set_route_group_meter_point (Route& route, MeterPoint mp)
 660 {
 661         RouteGroup* route_group;
 662
 663         if ((route_group = route.route_group ()) != 0) {
 664                 route_group->foreach_route (boost::bind (&Route::set_meter_point, _1, mp, false));
 665         } else {
 666                 route.set_meter_point (mp);
 667         }
 668 }
 669
 670 void
 671 GainMeterBase::meter_point_clicked ()
 672 {
 673         if (_route) {
 674                 /* WHAT? */
 675         }
 676 }
 677
 678 bool
 679 GainMeterBase::gain_slider_button_press (GdkEventButton* ev)
 680 {
 681         switch (ev->type) {
 682         case GDK_BUTTON_PRESS:
 683                 _amp->gain_control()->start_touch (_amp->session().transport_frame());
 684                 break;
 685         default:
 686                 return false;
 687         }
 688
 689         return false;
 690 }
 691
 692 bool
 693 GainMeterBase::gain_slider_button_release (GdkEventButton*)
 694 {
 695         _amp->gain_control()->stop_touch (false, _amp->session().transport_frame());
 696         return false;
 697 }
 698
 699 gint
 700 GainMeterBase::gain_automation_state_button_event (GdkEventButton *ev)
 701 {
 702         if (ev->type == GDK_BUTTON_RELEASE) {
 703                 return TRUE;
 704         }
 705
 706         switch (ev->button) {
 707                 case 1:
 708                         gain_astate_menu.popup (1, ev->time);
 709                         break;
 710                 default:
 711                         break;
 712         }
 713
 714         return TRUE;
 715 }
 716
 717 gint
 718 GainMeterBase::gain_automation_style_button_event (GdkEventButton *ev)
 719 {
 720         if (ev->type == GDK_BUTTON_RELEASE) {
 721                 return TRUE;
 722         }
 723
 724         switch (ev->button) {
 725         case 1:
 726                 gain_astyle_menu.popup (1, ev->time);
 727                 break;
 728         default:
 729                 break;
 730         }
 731         return TRUE;
 732 }
 733
 734 string
 735 GainMeterBase::astate_string (AutoState state)
 736 {
 737         return _astate_string (state, false);
 738 }
 739
 740 string
 741 GainMeterBase::short_astate_string (AutoState state)
 742 {
 743         return _astate_string (state, true);
 744 }
 745
 746 string
 747 GainMeterBase::_astate_string (AutoState state, bool shrt)
 748 {
 749         string sstr;
 750
 751         switch (state) {
 752         case ARDOUR::Off:
 753                 sstr = (shrt ? "M" : _("M"));
 754                 break;
 755         case Play:
 756                 sstr = (shrt ? "P" : _("P"));
 757                 break;
 758         case Touch:
 759                 sstr = (shrt ? "T" : _("T"));
 760                 break;
 761         case Write:
 762                 sstr = (shrt ? "W" : _("W"));
 763                 break;
 764         }
 765
 766         return sstr;
 767 }
 768
 769 string
 770 GainMeterBase::astyle_string (AutoStyle style)
 771 {
 772         return _astyle_string (style, false);
 773 }
 774
 775 string
 776 GainMeterBase::short_astyle_string (AutoStyle style)
 777 {
 778         return _astyle_string (style, true);
 779 }
 780
 781 string
 782 GainMeterBase::_astyle_string (AutoStyle style, bool shrt)
 783 {
 784         if (style & Trim) {
 785                 return _("Trim");
 786         } else {
 787                 /* XXX it might different in different languages */
 788
 789                 return (shrt ? _("Abs") : _("Abs"));
 790         }
 791 }
 792
 793 void
 794 GainMeterBase::gain_automation_style_changed ()
 795 {
 796         switch (_width) {
 797         case Wide:
 798                 gain_automation_style_button.set_text (astyle_string(_amp->gain_control()->alist()->automation_style()));
 799                 break;
 800         case Narrow:
 801                 gain_automation_style_button.set_text  (short_astyle_string(_amp->gain_control()->alist()->automation_style()));
 802                 break;
 803         }
 804 }
 805
 806 void
 807 GainMeterBase::gain_automation_state_changed ()
 808 {
 809         ENSURE_GUI_THREAD (*this, &GainMeterBase::gain_automation_state_changed)
 810
 811         bool x;
 812
 813         switch (_width) {
 814         case Wide:
 815                 gain_automation_state_button.set_text (astate_string(_amp->gain_control()->alist()->automation_state()));
 816                 break;
 817         case Narrow:
 818                 gain_automation_state_button.set_text (short_astate_string(_amp->gain_control()->alist()->automation_state()));
 819                 break;
 820         }
 821
 822         x = (_amp->gain_control()->alist()->automation_state() != ARDOUR::Off);
 823
 824         if (gain_automation_state_button.get_active() != x) {
 825                 ignore_toggle = true;
 826                 gain_automation_state_button.set_active (x);
 827                 ignore_toggle = false;
 828         }
 829
 830         update_gain_sensitive ();
 831
 832         /* start watching automation so that things move */
 833
 834         gain_watching.disconnect();
 835
 836         if (x) {
 837                 gain_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &GainMeterBase::effective_gain_display));
 838         }
 839 }
 840
 841 void
 842 GainMeterBase::update_meters()
 843 {
 844         char buf[32];
 845         float mpeak = level_meter->update_meters();
 846
 847         if (mpeak > max_peak) {
 848                 max_peak = mpeak;
 849                 if (mpeak <= -200.0f) {
 850                         peak_display.set_label (_("-inf"));
 851                 } else {
 852                         snprintf (buf, sizeof(buf), "%.1f", mpeak);
 853                         peak_display.set_label (buf);
 854                 }
 855
 856                 if (mpeak >= 0.0f) {
 857                         peak_display.set_name ("MixerStripPeakDisplayPeak");
 858                 }
 859         }
 860 }
 861
 862 void GainMeterBase::color_handler(bool dpi)
 863 {
 864         color_changed = true;
 865         dpi_changed = (dpi) ? true : false;
 866         setup_meters();
 867 }
 868
 869 void
 870 GainMeterBase::set_width (Width w, int len)
 871 {
 872         _width = w;
 873         level_meter->setup_meters (len);
 874 }
 875
 876
 877 void
 878 GainMeterBase::on_theme_changed()
 879 {
 880         style_changed = true;
 881 }
 882
 883 GainMeter::GainMeter (Session* s, int fader_length)
 884         : GainMeterBase (s, slider, slider_desensitised, false, fader_length)
 885         , gain_display_box(true, 0)
 886         , hbox(true, 2)
 887 {
 888 //      gain_display_box.pack_start (gain_display, true, true);
 889
 890         meter_metric_area.set_name ("AudioTrackMetrics");
 891         set_size_request_to_display_given_text (meter_metric_area, "-127", 0, 0);
 892
 893         gain_automation_style_button.set_name ("mixer strip button");
 894         gain_automation_state_button.set_name ("mixer strip button");
 895
 896         ARDOUR_UI::instance()->set_tip (gain_automation_state_button, _("Fader automation mode"));
 897         ARDOUR_UI::instance()->set_tip (gain_automation_style_button, _("Fader automation type"));
 898
 899         gain_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
 900         gain_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
 901
 902         gain_automation_state_button.set_size_request(15, 15);
 903         gain_automation_style_button.set_size_request(15, 15);
 904
 905         fader_vbox = manage (new Gtk::VBox());
 906         fader_vbox->set_spacing (0);
 907         fader_vbox->pack_start (*gain_slider, true, true);
 908
 909         fader_alignment.set (0.5, 0.5, 0.0, 1.0);
 910         fader_alignment.add (*fader_vbox);
 911
 912         hbox.pack_start (fader_alignment, true, true);
 913
 914         set_spacing (2);
 915
 916         pack_start (gain_display_box, Gtk::PACK_SHRINK);
 917         pack_start (hbox, Gtk::PACK_SHRINK);
 918
 919         meter_alignment.set (0.5, 0.5, 0.0, 1.0);
 920         meter_alignment.add (*level_meter);
 921
 922         meter_metric_area.signal_expose_event().connect (
 923                 sigc::mem_fun(*this, &GainMeter::meter_metrics_expose));
 924 }
 925
 926 void
 927 GainMeter::set_controls (boost::shared_ptr<Route> r,
 928                          boost::shared_ptr<PeakMeter> meter,
 929                          boost::shared_ptr<Amp> amp)
 930 {
 931         if (meter_alignment.get_parent()) {
 932                 hbox.remove (meter_alignment);
 933         }
 934
 935 //      if (peak_display.get_parent()) {
 936 //              gain_display_box.remove (peak_display);
 937 //      }
 938
 939 //      if (gain_automation_state_button.get_parent()) {
 940 //              fader_vbox->remove (gain_automation_state_button);
 941 //      }
 942
 943         GainMeterBase::set_controls (r, meter, amp);
 944
 945         if (_meter) {
 946                 _meter->ConfigurationChanged.connect (
 947                         model_connections, invalidator (*this), boost::bind (&GainMeter::meter_configuration_changed, this, _1), gui_context()
 948                         );
 949
 950                 meter_configuration_changed (_meter->input_streams ());
 951         }
 952
 953
 954         /*
 955            if we have a non-hidden route (ie. we're not the click or the auditioner),
 956            pack some route-dependent stuff.
 957         */
 958
 959 //      gain_display_box.pack_end (peak_display, true, true);
 960         hbox.pack_start (meter_alignment, true, true);
 961
 962 //      if (r && !r->is_hidden()) {
 963 //              fader_vbox->pack_start (gain_automation_state_button, false, false, 0);
 964 //      }
 965
 966         setup_meters ();
 967         hbox.show_all ();
 968 }
 969
 970 int
 971 GainMeter::get_gm_width ()
 972 {
 973         Gtk::Requisition sz;
 974         hbox.size_request (sz);
 975         return sz.width;
 976 }
 977
 978 cairo_pattern_t*
 979 GainMeter::render_metrics (Gtk::Widget& w, vector<DataType> types)
 980 {
 981         Glib::RefPtr<Gdk::Window> win (w.get_window());
 982
 983         gint width, height;
 984         win->get_size (width, height);
 985
 986         cairo_surface_t* surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
 987         cairo_t* cr = cairo_create (surface);
 988         PangoLayout* layout = gtk_widget_create_pango_layout (w.gobj(), "");
 989
 990         cairo_move_to (cr, 0, 0);
 991         cairo_rectangle (cr, 0, 0, width, height);
 992         {
 993                 Gdk::Color c = w.get_style()->get_bg (Gtk::STATE_NORMAL);
 994                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
 995         }
 996         cairo_fill (cr);
 997
 998         for (vector<DataType>::const_iterator i = types.begin(); i != types.end(); ++i) {
 999
1000                 Gdk::Color c;
1001
1002                 if (types.size() > 1) {
1003                         /* we're overlaying more than 1 set of marks, so use different colours */
1004                         Gdk::Color c;
1005                         switch (*i) {
1006                         case DataType::AUDIO:
1007                                 c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1008                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1009                                 break;
1010                         case DataType::MIDI:
1011                                 c = w.get_style()->get_fg (Gtk::STATE_ACTIVE);
1012                                 cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1013                                 break;
1014                         }
1015                 } else {
1016                         c = w.get_style()->get_fg (Gtk::STATE_NORMAL);
1017                         cairo_set_source_rgb (cr, c.get_red_p(), c.get_green_p(), c.get_blue_p());
1018                 }
1019
1020                 vector<int> points;
1021
1022                 switch (*i) {
1023                 case DataType::AUDIO:
1024                         points.push_back (-50);
1025                         points.push_back (-40);
1026                         points.push_back (-30);
1027                         points.push_back (-20);
1028                         points.push_back (-10);
1029                         points.push_back (-3);
1030                         points.push_back (0);
1031                         points.push_back (4);
1032                         break;
1033
1034                 case DataType::MIDI:
1035                         points.push_back (0);
1036                         if (types.size() == 1) {
1037                                 points.push_back (32);
1038                         } else {
1039                                 /* tweak so as not to overlay the -30dB mark */
1040                                 points.push_back (48);
1041                         }
1042                         points.push_back (64);
1043                         points.push_back (96);
1044                         points.push_back (127);
1045                         break;
1046                 }
1047
1048                 char buf[32];
1049
1050                 for (vector<int>::const_iterator j = points.begin(); j != points.end(); ++j) {
1051
1052                         float fraction = 0;
1053                         switch (*i) {
1054                         case DataType::AUDIO:
1055                                 fraction = log_meter (*j);
1056                                 break;
1057                         case DataType::MIDI:
1058                                 fraction = *j / 127.0;
1059                                 break;
1060                         }
1061
1062                         gint const pos = height - (gint) floor (height * fraction);
1063
1064                         cairo_set_line_width (cr, 1.0);
1065                         cairo_move_to (cr, 0, pos);
1066                         cairo_line_to (cr, 4, pos);
1067                         cairo_stroke (cr);
1068
1069                         snprintf (buf, sizeof (buf), "%d", abs (*j));
1070                         pango_layout_set_text (layout, buf, strlen (buf));
1071
1072                         /* we want logical extents, not ink extents here */
1073
1074                         int tw, th;
1075                         pango_layout_get_pixel_size (layout, &tw, &th);
1076
1077                         int p = pos - (th / 2);
1078                         p = min (p, height - th);
1079                         p = max (p, 0);
1080
1081                         cairo_move_to (cr, 6, p);
1082                         pango_cairo_show_layout (cr, layout);
1083                 }
1084         }
1085
1086         cairo_pattern_t* pattern = cairo_pattern_create_for_surface (surface);
1087         MetricPatterns::iterator p;
1088
1089         if ((p = metric_patterns.find (w.get_name())) != metric_patterns.end()) {
1090                 cairo_pattern_destroy (p->second);
1091         }
1092
1093         metric_patterns[w.get_name()] = pattern;
1094
1095         cairo_destroy (cr);
1096         cairo_surface_destroy (surface);
1097         g_object_unref (layout);
1098
1099         return pattern;
1100 }
1101
1102 gint
1103 GainMeter::meter_metrics_expose (GdkEventExpose *ev)
1104 {
1105         Glib::RefPtr<Gdk::Window> win (meter_metric_area.get_window());
1106         cairo_t* cr;
1107
1108         cr = gdk_cairo_create (win->gobj());
1109
1110         /* clip to expose area */
1111
1112         gdk_cairo_rectangle (cr, &ev->area);
1113         cairo_clip (cr);
1114
1115         cairo_pattern_t* pattern;
1116         MetricPatterns::iterator i = metric_patterns.find (meter_metric_area.get_name());
1117
1118         if (i == metric_patterns.end() || style_changed || dpi_changed) {
1119                 pattern = render_metrics (meter_metric_area, _types);
1120         } else {
1121                 pattern = i->second;
1122         }
1123
1124         cairo_move_to (cr, 0, 0);
1125         cairo_set_source (cr, pattern);
1126
1127         gint width, height;
1128         win->get_size (width, height);
1129
1130         cairo_rectangle (cr, 0, 0, width, height);
1131         cairo_fill (cr);
1132
1133         style_changed = false;
1134         dpi_changed = false;
1135
1136         cairo_destroy (cr);
1137
1138         return true;
1139 }
1140
1141 boost::shared_ptr<PBD::Controllable>
1142 GainMeterBase::get_controllable()
1143 {
1144         if (_amp) {
1145                 return _amp->gain_control();
1146         } else {
1147                 return boost::shared_ptr<PBD::Controllable>();
1148         }
1149 }
1150
1151 bool
1152 GainMeterBase::level_meter_button_press (GdkEventButton* ev)
1153 {
1154         return LevelMeterButtonPress (ev); /* EMIT SIGNAL */
1155 }
1156
1157 void
1158 GainMeter::meter_configuration_changed (ChanCount c)
1159 {
1160         _types.clear ();
1161
1162         for (DataType::iterator i = DataType::begin(); i != DataType::end(); ++i) {
1163                 if (c.get (*i) > 0) {
1164                         _types.push_back (*i);
1165                 }
1166         }
1167
1168         style_changed = true;
1169         meter_metric_area.queue_draw ();
1170 }
1171