gtk2_ardour/panner_ui.cc

   1 /*
   2   Copyright (C) 2004 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 #include <limits.h>
  20
  21 #include "ardour/io.h"
  22 #include "ardour/dB.h"
  23 #include <gtkmm2ext/utils.h>
  24 #include <gtkmm2ext/barcontroller.h>
  25 #include "midi++/manager.h"
  26 #include "pbd/fastlog.h"
  27
  28 #include "ardour_ui.h"
  29 #include "panner_ui.h"
  30 #include "panner2d.h"
  31 #include "utils.h"
  32 #include "panner.h"
  33 #include "gui_thread.h"
  34
  35 #include "ardour/delivery.h"
  36 #include "ardour/session.h"
  37 #include "ardour/panner.h"
  38 #include "ardour/route.h"
  39
  40 #include "i18n.h"
  41
  42 using namespace std;
  43 using namespace ARDOUR;
  44 using namespace PBD;
  45 using namespace Gtkmm2ext;
  46 using namespace Gtk;
  47
  48 const int PannerUI::pan_bar_height = 30;
  49
  50 PannerUI::PannerUI (Session* s)
  51         : _current_nouts (-1)
  52         , _current_npans (-1)
  53         , hAdjustment(0.0, 0.0, 0.0)
  54         , vAdjustment(0.0, 0.0, 0.0)
  55         , panning_viewport(hAdjustment, vAdjustment)
  56         , panning_up_arrow (Gtk::ARROW_UP, Gtk::SHADOW_OUT)
  57         , panning_down_arrow (Gtk::ARROW_DOWN, Gtk::SHADOW_OUT)
  58         , panning_link_button (_("link"))
  59         , pan_automation_style_button ("")
  60         , pan_automation_state_button ("")
  61 {
  62         set_session (s);
  63
  64         ignore_toggle = false;
  65         pan_menu = 0;
  66         pan_astate_menu = 0;
  67         pan_astyle_menu = 0;
  68         in_pan_update = false;
  69
  70         pan_automation_style_button.set_name ("MixerAutomationModeButton");
  71         pan_automation_state_button.set_name ("MixerAutomationPlaybackButton");
  72
  73         ARDOUR_UI::instance()->set_tip (pan_automation_state_button, _("Pan automation mode"));
  74         ARDOUR_UI::instance()->set_tip (pan_automation_style_button, _("Pan automation type"));
  75
  76         //set_size_request_to_display_given_text (pan_automation_state_button, X_("O"), 2, 2);
  77         //set_size_request_to_display_given_text (pan_automation_style_button, X_("0"), 2, 2);
  78
  79         panning_viewport.set_name (X_("BaseFrame"));
  80
  81         ARDOUR_UI::instance()->set_tip (panning_link_button,
  82                                                    _("panning link control"));
  83         ARDOUR_UI::instance()->set_tip (panning_link_direction_button,
  84                                                    _("panning link direction"));
  85
  86         pan_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
  87         pan_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
  88
  89         pan_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &PannerUI::pan_automation_style_button_event), false);
  90         pan_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &PannerUI::pan_automation_state_button_event), false);
  91
  92         panning_link_button.set_name (X_("PanningLinkButton"));
  93         panning_link_direction_button.set_name (X_("PanningLinkDirectionButton"));
  94
  95         panning_link_box.pack_start (panning_link_button, true, true);
  96         panning_link_box.pack_start (panning_link_direction_button, true, true);
  97         panning_link_box.pack_start (pan_automation_state_button, true, true);
  98
  99         /* the pixmap will be reset at some point, but the key thing is that
 100            we need a pixmap in the button just to get started.
 101         */
 102         panning_link_direction_button.add (*(manage (new Image (get_xpm("forwardblarrow.xpm")))));
 103
 104         panning_link_direction_button.signal_clicked().connect
 105                 (sigc::mem_fun(*this, &PannerUI::panning_link_direction_clicked));
 106
 107         panning_link_button.signal_button_press_event().connect
 108                 (sigc::mem_fun(*this, &PannerUI::panning_link_button_press), false);
 109         panning_link_button.signal_button_release_event().connect
 110                 (sigc::mem_fun(*this, &PannerUI::panning_link_button_release), false);
 111
 112         panning_up.set_border_width (3);
 113         panning_down.set_border_width (3);
 114         panning_up.add (panning_up_arrow);
 115         panning_down.add (panning_down_arrow);
 116         panning_up.set_name (X_("PanScrollerBase"));
 117         panning_down.set_name (X_("PanScrollerBase"));
 118         panning_up_arrow.set_name (X_("PanScrollerArrow"));
 119         panning_down_arrow.set_name (X_("PanScrollerArrow"));
 120
 121         pan_vbox.set_spacing (2);
 122         pan_vbox.pack_start (panning_viewport, Gtk::PACK_SHRINK);
 123         pan_vbox.pack_start (panning_link_box, Gtk::PACK_SHRINK);
 124
 125         pack_start (pan_vbox, true, true);
 126
 127         twod_panner = 0;
 128         big_window = 0;
 129
 130         set_width(Narrow);
 131 }
 132
 133 void
 134 PannerUI::set_panner (boost::shared_ptr<Panner> p)
 135 {
 136         connections.drop_connections ();
 137
 138         delete pan_astyle_menu;
 139         pan_astyle_menu = 0;
 140
 141         delete pan_astate_menu;
 142         pan_astate_menu = 0;
 143
 144         _panner = p;
 145
 146         delete twod_panner;
 147         twod_panner = 0;
 148
 149         if (!_panner) {
 150                 return;
 151         }
 152
 153         _panner->Changed.connect (connections, invalidator (*this), boost::bind (&PannerUI::panner_changed, this, this), gui_context());
 154         _panner->LinkStateChanged.connect (connections, invalidator (*this), boost::bind (&PannerUI::update_pan_linkage, this), gui_context());
 155         _panner->StateChanged.connect (connections, invalidator (*this), boost::bind (&PannerUI::update_pan_state, this), gui_context());
 156
 157         panner_changed (0);
 158         update_pan_sensitive ();
 159         update_pan_linkage ();
 160         pan_automation_state_changed ();
 161 }
 162
 163 void
 164 PannerUI::build_astate_menu ()
 165 {
 166         using namespace Menu_Helpers;
 167
 168         if (pan_astate_menu == 0) {
 169                 pan_astate_menu = new Menu;
 170                 pan_astate_menu->set_name ("ArdourContextMenu");
 171         } else {
 172                 pan_astate_menu->items().clear ();
 173         }
 174
 175         pan_astate_menu->items().push_back (MenuElem (_("Manual"), sigc::bind (
 176                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 177                         (AutoState) Off)));
 178         pan_astate_menu->items().push_back (MenuElem (_("Play"), sigc::bind (
 179                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 180                         (AutoState) Play)));
 181         pan_astate_menu->items().push_back (MenuElem (_("Write"), sigc::bind (
 182                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 183                         (AutoState) Write)));
 184         pan_astate_menu->items().push_back (MenuElem (_("Touch"), sigc::bind (
 185                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 186                         (AutoState) Touch)));
 187
 188 }
 189
 190 void
 191 PannerUI::build_astyle_menu ()
 192 {
 193         using namespace Menu_Helpers;
 194
 195         if (pan_astyle_menu == 0) {
 196                 pan_astyle_menu = new Menu;
 197                 pan_astyle_menu->set_name ("ArdourContextMenu");
 198         } else {
 199                 pan_astyle_menu->items().clear();
 200         }
 201
 202         pan_astyle_menu->items().push_back (MenuElem (_("Trim")));
 203         pan_astyle_menu->items().push_back (MenuElem (_("Abs")));
 204 }
 205
 206 boost::shared_ptr<PBD::Controllable>
 207 PannerUI::get_controllable()
 208 {
 209         return pan_bars[0]->get_controllable();
 210 }
 211
 212 bool
 213 PannerUI::panning_link_button_press (GdkEventButton*)
 214 {
 215         return true;
 216 }
 217
 218 bool
 219 PannerUI::panning_link_button_release (GdkEventButton*)
 220 {
 221         if (!ignore_toggle) {
 222                 _panner->set_linked (!_panner->linked());
 223         }
 224         return true;
 225 }
 226
 227 void
 228 PannerUI::panning_link_direction_clicked()
 229 {
 230         switch (_panner->link_direction()) {
 231         case Panner::SameDirection:
 232                 _panner->set_link_direction (Panner::OppositeDirection);
 233                 break;
 234         default:
 235                 _panner->set_link_direction (Panner::SameDirection);
 236                 break;
 237         }
 238 }
 239
 240 void
 241 PannerUI::update_pan_linkage ()
 242 {
 243         ENSURE_GUI_THREAD (*this, &PannerUI::update_pan_linkage)
 244
 245         bool const x = _panner->linked();
 246         bool const bx = panning_link_button.get_active();
 247
 248         if (x != bx) {
 249
 250                 ignore_toggle = true;
 251                 panning_link_button.set_active (x);
 252                 ignore_toggle = false;
 253         }
 254
 255         panning_link_direction_button.set_sensitive (x);
 256
 257         switch (_panner->link_direction()) {
 258         case Panner::SameDirection:
 259                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm ("forwardblarrow.xpm")))));
 260                 break;
 261         default:
 262                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm("revdblarrow.xpm")))));
 263                 break;
 264         }
 265 }
 266
 267 void
 268 PannerUI::set_width (Width w)
 269 {
 270         switch (w) {
 271         case Wide:
 272                 panning_link_button.set_label (_("link"));
 273                 break;
 274         case Narrow:
 275                 panning_link_button.set_label (_("L"));
 276                 break;
 277         }
 278
 279         _width = w;
 280 }
 281
 282
 283 PannerUI::~PannerUI ()
 284 {
 285         for (vector<Adjustment*>::iterator i = pan_adjustments.begin(); i != pan_adjustments.end(); ++i) {
 286                 delete (*i);
 287         }
 288
 289         for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 290                 delete (*i);
 291         }
 292
 293         delete twod_panner;
 294         delete big_window;
 295         delete pan_menu;
 296         delete pan_astyle_menu;
 297         delete pan_astate_menu;
 298 }
 299
 300
 301 void
 302 PannerUI::panner_changed (void* src)
 303 {
 304         ENSURE_GUI_THREAD (*this, &PannerUI::panner_changed)
 305
 306         setup_pan ();
 307
 308         if (src == this) {
 309                 return;
 310         }
 311
 312         switch (_panner->npanners()) {
 313         case 0:
 314                 panning_link_direction_button.set_sensitive (false);
 315                 panning_link_button.set_sensitive (false);
 316                 return;
 317         case 1:
 318                 panning_link_direction_button.set_sensitive (false);
 319                 panning_link_button.set_sensitive (false);
 320                 break;
 321         default:
 322                 panning_link_direction_button.set_sensitive (_panner->linked ());
 323                 panning_link_button.set_sensitive (true);
 324         }
 325
 326         uint32_t const nouts = _panner->nouts();
 327
 328         switch (nouts) {
 329         case 0:
 330         case 1:
 331                 /* relax */
 332                 break;
 333
 334         case 2:
 335                 /* bring pan bar state up to date */
 336                 update_pan_bars (false);
 337                 break;
 338
 339         default:
 340                 // panner->move_puck (pan_value (pans[0], pans[1]), 0.5);
 341                 break;
 342         }
 343 }
 344
 345 void
 346 PannerUI::update_pan_state ()
 347 {
 348         /* currently nothing to do */
 349         // ENSURE_GUI_THREAD (*this, &PannerUI::update_panner_state)
 350 }
 351
 352 void
 353 PannerUI::setup_pan ()
 354 {
 355         if (!_panner) {
 356                 return;
 357         }
 358
 359         uint32_t const nouts = _panner->nouts();
 360         uint32_t const npans = _panner->npanners();
 361
 362         if (int32_t (nouts) == _current_nouts && int32_t (npans) == _current_npans) {
 363                 return;
 364         }
 365
 366         _pan_control_connections.drop_connections ();
 367         for (uint32_t i = 0; i < _panner->npanners(); ++i) {
 368                 connect_to_pan_control (i);
 369         }
 370
 371         _current_nouts = nouts;
 372         _current_npans = npans;
 373
 374         if (nouts == 0 || nouts == 1) {
 375
 376                 while (!pan_adjustments.empty()) {
 377                         delete pan_bars.back();
 378                         pan_bars.pop_back ();
 379                         delete pan_adjustments.back();
 380                         pan_adjustments.pop_back ();
 381                 }
 382
 383                 delete twod_panner;
 384                 twod_panner = 0;
 385
 386                 /* stick something into the panning viewport so that it redraws */
 387
 388                 EventBox* eb = manage (new EventBox());
 389                 panning_viewport.remove ();
 390                 panning_viewport.add (*eb);
 391                 panning_viewport.show_all ();
 392
 393         } else if (nouts == 2) {
 394
 395                 vector<Adjustment*>::size_type asz;
 396
 397                 while (!pan_adjustments.empty()) {
 398                         delete pan_bars.back();
 399                         pan_bars.pop_back ();
 400                         delete pan_adjustments.back();
 401                         pan_adjustments.pop_back ();
 402                 }
 403
 404                 delete twod_panner;
 405                 twod_panner = 0;
 406
 407                 while ((asz = pan_adjustments.size()) < npans) {
 408
 409                         float x, rx;
 410                         PannerBar* bc;
 411
 412                         /* initialize adjustment with 0.0 (L) or 1.0 (R) for the first and second panners,
 413                            which serves as a default, otherwise use current value */
 414
 415                         rx = _panner->pan_control( asz)->get_value();
 416
 417                         if (npans == 1) {
 418                                 x = 0.5;
 419                         } else if (asz == 0) {
 420                                 x = 0.0;
 421                         } else if (asz == 1) {
 422                                 x = 1.0;
 423                         } else {
 424                                 x = rx;
 425                         }
 426
 427                         pan_adjustments.push_back (new Adjustment (x, 0, 1.0, 0.005, 0.05));
 428                         bc = new PannerBar (*pan_adjustments[asz],
 429                                 boost::static_pointer_cast<PBD::Controllable>( _panner->pan_control( asz )) );
 430
 431                         /* now set adjustment with current value of panner, then connect the signals */
 432                         pan_adjustments.back()->set_value(rx);
 433                         pan_adjustments.back()->signal_value_changed().connect (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_adjustment_changed), (uint32_t) asz));
 434                         connect_to_pan_control (asz);
 435
 436                         bc->set_name ("PanSlider");
 437                         bc->set_shadow_type (Gtk::SHADOW_NONE);
 438
 439                         boost::shared_ptr<AutomationControl> ac = _panner->pan_control (asz);
 440
 441                         if (asz) {
 442                                 bc->StartGesture.connect (sigc::bind (sigc::mem_fun (*this, &PannerUI::start_touch),
 443                                                                       boost::weak_ptr<AutomationControl> (ac)));
 444                                 bc->StopGesture.connect (sigc::bind (sigc::mem_fun (*this, &PannerUI::stop_touch),
 445                                                                      boost::weak_ptr<AutomationControl>(ac)));
 446                         }
 447
 448                         char buf[64];
 449                         snprintf (buf, sizeof (buf), _("panner for channel %zu"), asz + 1);
 450                         ARDOUR_UI::instance()->set_tip (bc->event_widget(), buf);
 451
 452                         bc->event_widget().signal_button_release_event().connect
 453                                 (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) asz));
 454
 455                         bc->set_size_request (-1, pan_bar_height);
 456
 457                         pan_bars.push_back (bc);
 458                         pan_bar_packer.pack_start (*bc, false, false);
 459                 }
 460
 461                 /* now that we actually have the pan bars,
 462                    set their sensitivity based on current
 463                    automation state.
 464                 */
 465
 466                 update_pan_sensitive ();
 467
 468                 panning_viewport.remove ();
 469                 panning_viewport.add (pan_bar_packer);
 470                 panning_viewport.show_all ();
 471
 472         } else {
 473
 474                 if (!twod_panner) {
 475                         twod_panner = new Panner2d (_panner, 61);
 476                         twod_panner->set_name ("MixerPanZone");
 477                         twod_panner->show ();
 478
 479                         twod_panner->signal_button_press_event().connect
 480                                 (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) 0), false);
 481                 }
 482
 483                 update_pan_sensitive ();
 484                 twod_panner->reset (npans);
 485                 if (big_window) {
 486                         big_window->reset (npans);
 487                 }
 488                 twod_panner->set_size_request (-1, 61);
 489
 490                 /* and finally, add it to the panner frame */
 491
 492                 panning_viewport.remove ();
 493                 panning_viewport.add (*twod_panner);
 494                 panning_viewport.show_all ();
 495         }
 496 }
 497
 498 void
 499 PannerUI::start_touch (boost::weak_ptr<AutomationControl> wac)
 500 {
 501         boost::shared_ptr<AutomationControl> ac = wac.lock();
 502         if (!ac) {
 503                 return;
 504         }
 505         ac->start_touch (ac->session().transport_frame());
 506 }
 507
 508 void
 509 PannerUI::stop_touch (boost::weak_ptr<AutomationControl> wac)
 510 {
 511         boost::shared_ptr<AutomationControl> ac = wac.lock();
 512         if (!ac) {
 513                 return;
 514         }
 515         ac->stop_touch (false, ac->session().transport_frame());
 516 }
 517
 518 bool
 519 PannerUI::pan_button_event (GdkEventButton* ev, uint32_t which)
 520 {
 521         switch (ev->button) {
 522         case 1:
 523                 if (twod_panner && ev->type == GDK_2BUTTON_PRESS) {
 524                         if (!big_window) {
 525                                 big_window = new Panner2dWindow (_panner, 400, _panner->npanners());
 526                         }
 527                         big_window->show ();
 528                         return true;
 529                 }
 530                 break;
 531
 532         case 3:
 533                 if (pan_menu == 0) {
 534                         pan_menu = manage (new Menu);
 535                         pan_menu->set_name ("ArdourContextMenu");
 536                 }
 537                 build_pan_menu (which);
 538                 pan_menu->popup (1, ev->time);
 539                 return true;
 540                 break;
 541         default:
 542                 return false;
 543         }
 544
 545         return false; // what's wrong with gcc?
 546 }
 547
 548 void
 549 PannerUI::build_pan_menu (uint32_t which)
 550 {
 551         using namespace Menu_Helpers;
 552         MenuList& items (pan_menu->items());
 553
 554         items.clear ();
 555
 556         items.push_back (CheckMenuElem (_("Mute")));
 557
 558         /* set state first, connect second */
 559
 560         (dynamic_cast<CheckMenuItem*> (&items.back()))->set_active (_panner->streampanner(which).muted());
 561         (dynamic_cast<CheckMenuItem*> (&items.back()))->signal_toggled().connect
 562                 (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_mute), which));
 563
 564         items.push_back (CheckMenuElem (_("Bypass"), sigc::mem_fun(*this, &PannerUI::pan_bypass_toggle)));
 565         bypass_menu_item = static_cast<CheckMenuItem*> (&items.back());
 566
 567         /* set state first, connect second */
 568
 569         bypass_menu_item->set_active (_panner->bypassed());
 570         bypass_menu_item->signal_toggled().connect (sigc::mem_fun(*this, &PannerUI::pan_bypass_toggle));
 571
 572         items.push_back (MenuElem (_("Reset"), sigc::bind (sigc::mem_fun (*this, &PannerUI::pan_reset), which)));
 573         items.push_back (SeparatorElem());
 574         items.push_back (MenuElem (_("Reset all"), sigc::mem_fun (*this, &PannerUI::pan_reset_all)));
 575 }
 576
 577 void
 578 PannerUI::pan_mute (uint32_t which)
 579 {
 580         StreamPanner& sp = _panner->streampanner(which);
 581         sp.set_muted (!sp.muted());
 582 }
 583
 584 void
 585 PannerUI::pan_bypass_toggle ()
 586 {
 587         if (bypass_menu_item && (_panner->bypassed() != bypass_menu_item->get_active())) {
 588                 _panner->set_bypassed (!_panner->bypassed());
 589         }
 590 }
 591
 592 void
 593 PannerUI::pan_reset (uint32_t which)
 594 {
 595         _panner->reset_streampanner (which);
 596 }
 597
 598 void
 599 PannerUI::pan_reset_all ()
 600 {
 601         _panner->reset_to_default ();
 602 }
 603
 604 void
 605 PannerUI::effective_pan_display ()
 606 {
 607         if (_panner->empty()) {
 608                 return;
 609         }
 610
 611         switch (_panner->nouts()) {
 612         case 0:
 613         case 1:
 614                 /* relax */
 615                 break;
 616
 617         case 2:
 618                 update_pan_bars (true);
 619                 break;
 620
 621         default:
 622                 //panner->move_puck (pan_value (v, right), 0.5);
 623                 break;
 624         }
 625 }
 626
 627 void
 628 PannerUI::pan_adjustment_changed (uint32_t which)
 629 {
 630         if (!in_pan_update && which < _panner->npanners()) {
 631
 632                 float val = pan_adjustments[which]->get_value ();
 633                 float const xpos = _panner->pan_control(which)->get_value();
 634
 635                 /* add a kinda-sorta detent for the middle */
 636
 637                 if (val != 0.5 && Panner::equivalent (val, 0.5)) {
 638                         /* this is going to be reentrant, so just
 639                            return after it.
 640                         */
 641
 642                         in_pan_update = true;
 643                         pan_adjustments[which]->set_value (0.5);
 644                         in_pan_update = false;
 645                         return;
 646                 }
 647
 648                 if (!Panner::equivalent (val, xpos)) {
 649
 650                         _panner->pan_control(which)->set_value (val);
 651                         /* XXX
 652                            the panner objects have no access to the session,
 653                            so do this here. ick.
 654                         */
 655                         _session->set_dirty();
 656                 }
 657         }
 658 }
 659
 660 void
 661 PannerUI::pan_value_changed (uint32_t which)
 662 {
 663         ENSURE_GUI_THREAD (*this, &PannerUI::pan_value_changed, which)
 664
 665         if (twod_panner) {
 666
 667                 float x;
 668                 float y;
 669                 _panner->streampanner(which).get_position (x, y);
 670
 671                 in_pan_update = true;
 672                 twod_panner->move_puck (which, x, y);
 673                 in_pan_update = false;
 674
 675         } else if (_panner->npanners() > 0 && which < _panner->npanners()) {
 676                 float xpos;
 677                 float val = pan_adjustments[which]->get_value ();
 678
 679                 _panner->streampanner(which).get_position (xpos);
 680
 681                 if (!Panner::equivalent (val, xpos)) {
 682                         in_pan_update = true;
 683                         pan_adjustments[which]->set_value (xpos);
 684                         in_pan_update = false;
 685                 }
 686         }
 687 }
 688
 689 void
 690 PannerUI::update_pan_bars (bool only_if_aplay)
 691 {
 692         uint32_t n;
 693         vector<Adjustment*>::iterator i;
 694
 695         in_pan_update = true;
 696
 697         /* this runs during automation playback, and moves the bar controllers
 698            and/or pucks around.
 699         */
 700
 701         for (i = pan_adjustments.begin(), n = 0; i != pan_adjustments.end(); ++i, ++n) {
 702                 float xpos, val;
 703
 704                 if (only_if_aplay) {
 705                         boost::shared_ptr<AutomationList> alist (_panner->streampanner(n).pan_control()->alist());
 706
 707                         if (!alist->automation_playback()) {
 708                                 continue;
 709                         }
 710                 }
 711
 712                 _panner->streampanner(n).get_effective_position (xpos);
 713                 val = (*i)->get_value ();
 714
 715                 if (!Panner::equivalent (val, xpos)) {
 716                         (*i)->set_value (xpos);
 717                 }
 718         }
 719
 720         in_pan_update = false;
 721 }
 722
 723 void
 724 PannerUI::update_pan_sensitive ()
 725 {
 726         bool const sensitive = !(_panner->mono()) && !(_panner->automation_state() & Play);
 727
 728         switch (_panner->nouts()) {
 729         case 0:
 730         case 1:
 731                 break;
 732         case 2:
 733                 for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 734                         (*i)->set_sensitive (sensitive);
 735                 }
 736                 break;
 737         default:
 738                 if (twod_panner) {
 739                         twod_panner->set_sensitive (sensitive);
 740                 }
 741                 if (big_window) {
 742                         big_window->set_sensitive (sensitive);
 743                 }
 744                 break;
 745         }
 746 }
 747
 748 gint
 749 PannerUI::pan_automation_state_button_event (GdkEventButton *ev)
 750 {
 751         using namespace Menu_Helpers;
 752
 753         if (ev->type == GDK_BUTTON_RELEASE) {
 754                 return TRUE;
 755         }
 756
 757         switch (ev->button) {
 758         case 1:
 759                 if (pan_astate_menu == 0) {
 760                         build_astate_menu ();
 761                 }
 762                 pan_astate_menu->popup (1, ev->time);
 763                 break;
 764         default:
 765                 break;
 766         }
 767
 768         return TRUE;
 769 }
 770
 771 gint
 772 PannerUI::pan_automation_style_button_event (GdkEventButton *ev)
 773 {
 774         if (ev->type == GDK_BUTTON_RELEASE) {
 775                 return TRUE;
 776         }
 777
 778         switch (ev->button) {
 779         case 1:
 780                 if (pan_astyle_menu == 0) {
 781                         build_astyle_menu ();
 782                 }
 783                 pan_astyle_menu->popup (1, ev->time);
 784                 break;
 785         default:
 786                 break;
 787         }
 788         return TRUE;
 789 }
 790
 791 void
 792 PannerUI::pan_automation_style_changed ()
 793 {
 794         ENSURE_GUI_THREAD (*this, &PannerUI::pan_automation_style_changed)
 795
 796         switch (_width) {
 797         case Wide:
 798                 pan_automation_style_button.set_label (astyle_string(_panner->automation_style()));
 799                 break;
 800         case Narrow:
 801                 pan_automation_style_button.set_label (short_astyle_string(_panner->automation_style()));
 802                 break;
 803         }
 804 }
 805
 806 void
 807 PannerUI::pan_automation_state_changed ()
 808 {
 809         ENSURE_GUI_THREAD (*this, &PannerUI::pan_automation_state_changed)
 810
 811         bool x;
 812
 813         switch (_width) {
 814         case Wide:
 815           pan_automation_state_button.set_label (astate_string(_panner->automation_state()));
 816                 break;
 817         case Narrow:
 818           pan_automation_state_button.set_label (short_astate_string(_panner->automation_state()));
 819                 break;
 820         }
 821
 822         /* when creating a new session, we get to create busses (and
 823            sometimes tracks) with no outputs by the time they get
 824            here.
 825         */
 826
 827         if (_panner->empty()) {
 828                 return;
 829         }
 830
 831         x = (_panner->streampanner(0).pan_control()->alist()->automation_state() != Off);
 832
 833         if (pan_automation_state_button.get_active() != x) {
 834         ignore_toggle = true;
 835                 pan_automation_state_button.set_active (x);
 836                 ignore_toggle = false;
 837         }
 838
 839         update_pan_sensitive ();
 840
 841         /* start watching automation so that things move */
 842
 843         pan_watching.disconnect();
 844
 845         if (x) {
 846                 pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &PannerUI::effective_pan_display));
 847         }
 848 }
 849
 850 string
 851 PannerUI::astate_string (AutoState state)
 852 {
 853         return _astate_string (state, false);
 854 }
 855
 856 string
 857 PannerUI::short_astate_string (AutoState state)
 858 {
 859         return _astate_string (state, true);
 860 }
 861
 862 string
 863 PannerUI::_astate_string (AutoState state, bool shrt)
 864 {
 865         string sstr;
 866
 867         switch (state) {
 868         case Off:
 869                 sstr = (shrt ? "M" : _("M"));
 870                 break;
 871         case Play:
 872                 sstr = (shrt ? "P" : _("P"));
 873                 break;
 874         case Touch:
 875                 sstr = (shrt ? "T" : _("T"));
 876                 break;
 877         case Write:
 878                 sstr = (shrt ? "W" : _("W"));
 879                 break;
 880         }
 881
 882         return sstr;
 883 }
 884
 885 string
 886 PannerUI::astyle_string (AutoStyle style)
 887 {
 888         return _astyle_string (style, false);
 889 }
 890
 891 string
 892 PannerUI::short_astyle_string (AutoStyle style)
 893 {
 894         return _astyle_string (style, true);
 895 }
 896
 897 string
 898 PannerUI::_astyle_string (AutoStyle style, bool shrt)
 899 {
 900         if (style & Trim) {
 901                 return _("Trim");
 902         } else {
 903                 /* XXX it might different in different languages */
 904
 905                 return (shrt ? _("Abs") : _("Abs"));
 906         }
 907 }
 908
 909 void
 910 PannerUI::set_mono (bool yn)
 911 {
 912         _panner->set_mono (yn);
 913         update_pan_sensitive ();
 914 }
 915
 916
 917 void
 918 PannerUI::connect_to_pan_control (uint32_t i)
 919 {
 920         _panner->pan_control(i)->Changed.connect (
 921                 _pan_control_connections, invalidator (*this), boost::bind (&PannerUI::pan_value_changed, this, i), gui_context ()
 922                 );
 923 }