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/stop_signal.h>
  25 #include <gtkmm2ext/barcontroller.h>
  26 #include <midi++/manager.h>
  27 #include <pbd/fastlog.h>
  28
  29 #include "ardour_ui.h"
  30 #include "panner_ui.h"
  31 #include "panner2d.h"
  32 #include "utils.h"
  33 #include "panner.h"
  34 #include "gui_thread.h"
  35
  36 #include <ardour/session.h>
  37 #include <ardour/panner.h>
  38 #include <ardour/route.h>
  39
  40 #include "i18n.h"
  41
  42 using namespace ARDOUR;
  43 using namespace PBD;
  44 using namespace Gtkmm2ext;
  45 using namespace Gtk;
  46 using namespace sigc;
  47
  48 const int PannerUI::pan_bar_height = 30;
  49
  50 PannerUI::PannerUI (boost::shared_ptr<IO> io, Session& s)
  51         : _io (io),
  52           _session (s),
  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         ignore_toggle = false;
  63         pan_menu = 0;
  64         in_pan_update = false;
  65
  66         pan_automation_style_button.set_name ("MixerAutomationModeButton");
  67         pan_automation_state_button.set_name ("MixerAutomationPlaybackButton");
  68
  69         ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_state_button, _("Pan automation mode"));
  70         ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_style_button, _("Pan automation type"));
  71
  72         //set_size_request_to_display_given_text (pan_automation_state_button, X_("O"), 2, 2);
  73         //set_size_request_to_display_given_text (pan_automation_style_button, X_("0"), 2, 2);
  74
  75         pan_bar_packer.set_size_request (-1, 61);
  76         panning_viewport.set_size_request (-1, 61);
  77         panning_viewport.set_name (X_("BaseFrame"));
  78
  79         ARDOUR_UI::instance()->tooltips().set_tip (panning_link_button,
  80                                                    _("panning link control"));
  81         ARDOUR_UI::instance()->tooltips().set_tip (panning_link_direction_button,
  82                                                    _("panning link direction"));
  83
  84         pan_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
  85         pan_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
  86
  87         using namespace Menu_Helpers;
  88         pan_astate_menu.items().push_back (MenuElem (_("Manual"),
  89                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Off)));
  90         pan_astate_menu.items().push_back (MenuElem (_("Play"),
  91                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Play)));
  92         pan_astate_menu.items().push_back (MenuElem (_("Write"),
  93                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Write)));
  94         pan_astate_menu.items().push_back (MenuElem (_("Touch"),
  95                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Touch)));
  96
  97         pan_astyle_menu.items().push_back (MenuElem (_("Trim")));
  98         pan_astyle_menu.items().push_back (MenuElem (_("Abs")));
  99
 100         pan_astate_menu.set_name ("ArdourContextMenu");
 101         pan_astyle_menu.set_name ("ArdourContextMenu");
 102
 103         pan_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_style_button_event), false);
 104         pan_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_state_button_event), false);
 105
 106         panning_link_button.set_name (X_("PanningLinkButton"));
 107         panning_link_direction_button.set_name (X_("PanningLinkDirectionButton"));
 108
 109         panning_link_box.pack_start (panning_link_button, true, true);
 110         panning_link_box.pack_start (panning_link_direction_button, true, true);
 111         panning_link_box.pack_start (pan_automation_state_button, true, true);
 112
 113         /* the pixmap will be reset at some point, but the key thing is that
 114            we need a pixmap in the button just to get started.
 115         */
 116         panning_link_direction_button.add (*(manage (new Image (get_xpm("forwardblarrow.xpm")))));
 117
 118         panning_link_direction_button.signal_clicked().connect
 119                 (mem_fun(*this, &PannerUI::panning_link_direction_clicked));
 120
 121         panning_link_button.signal_button_press_event().connect
 122                 (mem_fun(*this, &PannerUI::panning_link_button_press), false);
 123         panning_link_button.signal_button_release_event().connect
 124                 (mem_fun(*this, &PannerUI::panning_link_button_release), false);
 125
 126         panning_up.set_border_width (3);
 127         panning_down.set_border_width (3);
 128         panning_up.add (panning_up_arrow);
 129         panning_down.add (panning_down_arrow);
 130         panning_up.set_name (X_("PanScrollerBase"));
 131         panning_down.set_name (X_("PanScrollerBase"));
 132         panning_up_arrow.set_name (X_("PanScrollerArrow"));
 133         panning_down_arrow.set_name (X_("PanScrollerArrow"));
 134
 135         pan_vbox.set_spacing (2);
 136         pan_vbox.pack_start (panning_viewport, Gtk::PACK_SHRINK);
 137         pan_vbox.pack_start (panning_link_box, Gtk::PACK_SHRINK);
 138
 139         pack_start (pan_vbox, true, true);
 140
 141         panner = 0;
 142
 143         set_width(Narrow);
 144
 145         _io->panner().Changed.connect (mem_fun(*this, &PannerUI::panner_changed));
 146         _io->panner().LinkStateChanged.connect (mem_fun(*this, &PannerUI::update_pan_linkage));
 147         _io->panner().StateChanged.connect (mem_fun(*this, &PannerUI::update_pan_state));
 148
 149         pan_changed (0);
 150         update_pan_sensitive ();
 151         update_pan_linkage ();
 152         pan_automation_state_changed ();
 153
 154         pan_bar_packer.show();
 155         panning_viewport.show();
 156         panning_up.show();
 157         panning_up_arrow.show();
 158         panning_down.show();
 159         panning_down_arrow.show();
 160         pan_vbox.show();
 161         panning_link_button.show();
 162         panning_link_direction_button.show();
 163         panning_link_box.show();
 164         pan_automation_style_button.show();
 165         pan_automation_state_button.show();
 166         show();
 167 }
 168
 169 boost::shared_ptr<PBD::Controllable>
 170 PannerUI::get_controllable()
 171 {
 172         return pan_bars[0]->get_controllable();
 173 }
 174
 175 bool
 176 PannerUI::panning_link_button_press (GdkEventButton* ev)
 177 {
 178         cerr << "link press\n";
 179         return true;
 180 }
 181
 182 bool
 183 PannerUI::panning_link_button_release (GdkEventButton* ev)
 184 {
 185         cerr << "link release\n";
 186         if (!ignore_toggle) {
 187                 _io->panner().set_linked (!_io->panner().linked());
 188         }
 189         return true;
 190 }
 191
 192 void
 193 PannerUI::panning_link_direction_clicked()
 194 {
 195         switch (_io->panner().link_direction()) {
 196         case Panner::SameDirection:
 197                 _io->panner().set_link_direction (Panner::OppositeDirection);
 198                 break;
 199         default:
 200                 _io->panner().set_link_direction (Panner::SameDirection);
 201                 break;
 202         }
 203 }
 204
 205 void
 206 PannerUI::update_pan_linkage ()
 207 {
 208         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::update_pan_linkage));
 209
 210         bool x = _io->panner().linked();
 211         bool bx = panning_link_button.get_active();
 212
 213         if (x != bx) {
 214
 215                 ignore_toggle = true;
 216                 panning_link_button.set_active (x);
 217                 ignore_toggle = false;
 218         }
 219
 220         panning_link_direction_button.set_sensitive (x);
 221
 222         switch (_io->panner().link_direction()) {
 223         case Panner::SameDirection:
 224                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm ("forwardblarrow.xpm")))));
 225                 break;
 226         default:
 227                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm("revdblarrow.xpm")))));
 228                 break;
 229         }
 230 }
 231
 232 void
 233 PannerUI::set_width (Width w)
 234 {
 235         switch (w) {
 236         case Wide:
 237                 panning_link_button.set_label (_("link"));
 238                 break;
 239         case Narrow:
 240                 panning_link_button.set_label (_("L"));
 241                 break;
 242         }
 243
 244         _width = w;
 245 }
 246
 247
 248 PannerUI::~PannerUI ()
 249 {
 250         for (vector<Adjustment*>::iterator i = pan_adjustments.begin(); i != pan_adjustments.end(); ++i) {
 251                 delete (*i);
 252         }
 253
 254         for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 255                 delete (*i);
 256         }
 257
 258         if (panner) {
 259                 delete panner;
 260         }
 261
 262         if (pan_menu) {
 263                 delete pan_menu;
 264         }
 265
 266 }
 267
 268
 269 void
 270 PannerUI::panner_changed ()
 271 {
 272         ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::panner_changed));
 273         setup_pan ();
 274 }
 275
 276 void
 277 PannerUI::update_pan_state ()
 278 {
 279         /* currently nothing to do */
 280         // ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::update_panner_state));
 281 }
 282
 283 void
 284 PannerUI::setup_pan ()
 285 {
 286         uint32_t nouts = _io->n_outputs ().n_audio();
 287
 288         if (nouts == 0 || nouts == 1) {
 289
 290                 while (!pan_adjustments.empty()) {
 291                         delete pan_bars.back();
 292                         pan_bars.pop_back ();
 293                         delete pan_adjustments.back();
 294                         pan_adjustments.pop_back ();
 295                 }
 296
 297                 /* stick something into the panning viewport so that it redraws */
 298
 299                 EventBox* eb = manage (new EventBox());
 300                 panning_viewport.remove ();
 301                 panning_viewport.add (*eb);
 302                 panning_viewport.show_all ();
 303
 304         } else if (nouts == 2) {
 305
 306                 vector<Adjustment*>::size_type asz;
 307                 uint32_t npans = _io->panner().npanners();
 308
 309                 while (!pan_adjustments.empty()) {
 310                         delete pan_bars.back();
 311                         pan_bars.pop_back ();
 312                         delete pan_adjustments.back();
 313                         pan_adjustments.pop_back ();
 314                 }
 315
 316                 while ((asz = pan_adjustments.size()) < npans) {
 317
 318                         float x, rx;
 319                         PannerBar* bc;
 320
 321                         /* initialize adjustment with 0.0 (L) or 1.0 (R) for the first and second panners,
 322                            which serves as a default, otherwise use current value */
 323
 324                         rx = _io->panner().pan_control( asz)->get_value();
 325
 326                         if (npans == 1) {
 327                                 x = 0.5;
 328                         } else if (asz == 0) {
 329                                 x = 0.0;
 330                         } else if (asz == 1) {
 331                                 x = 1.0;
 332                         } else {
 333                                 x = rx;
 334                         }
 335
 336                         pan_adjustments.push_back (new Adjustment (x, 0, 1.0, 0.05, 0.1));
 337                         bc = new PannerBar (*pan_adjustments[asz],
 338                                 boost::static_pointer_cast<PBD::Controllable>( _io->panner().pan_control( asz )) );
 339
 340                         /* now set adjustment with current value of panner, then connect the signals */
 341                         pan_adjustments.back()->set_value(rx);
 342                         pan_adjustments.back()->signal_value_changed().connect (bind (mem_fun(*this, &PannerUI::pan_adjustment_changed), (uint32_t) asz));
 343
 344                         _io->panner().pan_control( asz )->Changed.connect (bind (mem_fun(*this, &PannerUI::pan_value_changed), (uint32_t) asz));
 345
 346
 347                         bc->set_name ("PanSlider");
 348                         bc->set_shadow_type (Gtk::SHADOW_NONE);
 349
 350                         bc->StartGesture.connect (bind (mem_fun (*_io, &IO::start_pan_touch), (uint32_t) asz));
 351                         bc->StopGesture.connect (bind (mem_fun (*_io, &IO::end_pan_touch), (uint32_t) asz));
 352
 353                         char buf[64];
 354                         snprintf (buf, sizeof (buf), _("panner for channel %zu"), asz + 1);
 355                         ARDOUR_UI::instance()->tooltips().set_tip (bc->event_widget(), buf);
 356
 357                         bc->event_widget().signal_button_release_event().connect
 358                                 (bind (mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) asz));
 359
 360                         bc->set_size_request (-1, pan_bar_height);
 361
 362                         pan_bars.push_back (bc);
 363                         pan_bar_packer.pack_start (*bc, false, false);
 364                 }
 365
 366                 /* now that we actually have the pan bars,
 367                    set their sensitivity based on current
 368                    automation state.
 369                 */
 370
 371                 update_pan_sensitive ();
 372
 373                 panning_viewport.remove ();
 374                 panning_viewport.add (pan_bar_packer);
 375                 panning_viewport.show_all ();
 376
 377         } else {
 378
 379                 if (panner == 0) {
 380                         panner = new Panner2d (_io->panner(), 61);
 381                         panner->set_name ("MixerPanZone");
 382                         panner->show ();
 383                 }
 384
 385                 update_pan_sensitive ();
 386                 panner->reset (_io->n_inputs().n_audio());
 387                 panner->set_size_request (-1, 61);
 388
 389                 /* and finally, add it to the panner frame */
 390
 391                 panning_viewport.remove ();
 392                 panning_viewport.add (*panner);
 393                 panning_viewport.show_all ();
 394         }
 395 }
 396
 397 bool
 398 PannerUI::pan_button_event (GdkEventButton* ev, uint32_t which)
 399 {
 400         switch (ev->button) {
 401         case 3:
 402                 if (pan_menu == 0) {
 403                         pan_menu = manage (new Menu);
 404                         pan_menu->set_name ("ArdourContextMenu");
 405                 }
 406                 build_pan_menu (which);
 407                 pan_menu->popup (1, ev->time);
 408                 return true;
 409                 break;
 410         default:
 411                 return false;
 412         }
 413
 414         return false; // what's wrong with gcc?
 415 }
 416
 417 void
 418 PannerUI::build_pan_menu (uint32_t which)
 419 {
 420         using namespace Menu_Helpers;
 421         MenuList& items (pan_menu->items());
 422
 423         items.clear ();
 424
 425         items.push_back (CheckMenuElem (_("Mute")));
 426
 427         /* set state first, connect second */
 428
 429         (dynamic_cast<CheckMenuItem*> (&items.back()))->set_active (_io->panner().streampanner(which).muted());
 430         (dynamic_cast<CheckMenuItem*> (&items.back()))->signal_toggled().connect
 431                 (bind (mem_fun(*this, &PannerUI::pan_mute), which));
 432
 433         items.push_back (CheckMenuElem (_("Bypass"), mem_fun(*this, &PannerUI::pan_bypass_toggle)));
 434         bypass_menu_item = static_cast<CheckMenuItem*> (&items.back());
 435
 436         /* set state first, connect second */
 437
 438         bypass_menu_item->set_active (_io->panner().bypassed());
 439         bypass_menu_item->signal_toggled().connect (mem_fun(*this, &PannerUI::pan_bypass_toggle));
 440
 441         items.push_back (MenuElem (_("Reset"), mem_fun(*this, &PannerUI::pan_reset)));
 442         items.push_back (SeparatorElem());
 443         items.push_back (MenuElem (_("Reset all")));
 444 }
 445
 446 void
 447 PannerUI::pan_mute (uint32_t which)
 448 {
 449         StreamPanner& sp = _io->panner().streampanner(which);
 450         sp.set_muted (!sp.muted());
 451 }
 452
 453 void
 454 PannerUI::pan_bypass_toggle ()
 455 {
 456         if (bypass_menu_item && (_io->panner().bypassed() != bypass_menu_item->get_active())) {
 457                 _io->panner().set_bypassed (!_io->panner().bypassed());
 458         }
 459 }
 460
 461 void
 462 PannerUI::pan_reset ()
 463 {
 464 }
 465
 466 void
 467 PannerUI::effective_pan_display ()
 468 {
 469         if (_io->panner().empty()) {
 470                 return;
 471         }
 472
 473         switch (_io->n_outputs().n_audio()) {
 474         case 0:
 475         case 1:
 476                 /* relax */
 477                 break;
 478
 479         case 2:
 480                 update_pan_bars (true);
 481                 break;
 482
 483         default:
 484                 //panner->move_puck (pan_value (v, right), 0.5);
 485                 break;
 486         }
 487 }
 488
 489 void
 490 PannerUI::pan_changed (void *src)
 491 {
 492         if (src == this) {
 493                 return;
 494         }
 495
 496         switch (_io->panner().npanners()) {
 497         case 0:
 498                 panning_link_direction_button.set_sensitive (false);
 499                 panning_link_button.set_sensitive (false);
 500                 return;
 501         case 1:
 502                 panning_link_direction_button.set_sensitive (false);
 503                 panning_link_button.set_sensitive (false);
 504                 break;
 505         default:
 506                 panning_link_direction_button.set_sensitive (true);
 507                 panning_link_button.set_sensitive (true);
 508         }
 509
 510         uint32_t nouts = _io->n_outputs().n_audio();
 511
 512         switch (nouts) {
 513         case 0:
 514         case 1:
 515                 /* relax */
 516                 break;
 517
 518         case 2:
 519                 update_pan_bars (false);
 520                 break;
 521
 522         default:
 523                 // panner->move_puck (pan_value (pans[0], pans[1]), 0.5);
 524                 break;
 525         }
 526 }
 527
 528 void
 529 PannerUI::pan_adjustment_changed (uint32_t which)
 530 {
 531         if (!in_pan_update && which < _io->panner().npanners()) {
 532
 533                 float xpos;
 534                 float val = pan_adjustments[which]->get_value ();
 535                 xpos = _io->panner().pan_control( which )->get_value();
 536
 537                 /* add a kinda-sorta detent for the middle */
 538
 539                 if (val != 0.5 && Panner::equivalent (val, 0.5)) {
 540                         /* this is going to be reentrant, so just
 541                            return after it.
 542                         */
 543
 544                         in_pan_update = true;
 545                         pan_adjustments[which]->set_value (0.5);
 546                         in_pan_update = false;
 547                         return;
 548                 }
 549
 550                 if (!Panner::equivalent (val, xpos)) {
 551
 552                         _io->panner().streampanner(which).set_position (val);
 553                         /* XXX
 554                            the panner objects have no access to the session,
 555                            so do this here. ick.
 556                         */
 557                         _session.set_dirty();
 558                 }
 559         }
 560 }
 561
 562 void
 563 PannerUI::pan_value_changed (uint32_t which)
 564 {
 565         ENSURE_GUI_THREAD (bind (mem_fun(*this, &PannerUI::pan_value_changed), which));
 566
 567         if (_io->n_outputs().n_audio() > 1 && which < _io->panner().npanners()) {
 568                 float xpos;
 569                 float val = pan_adjustments[which]->get_value ();
 570
 571                 _io->panner().streampanner(which).get_position (xpos);
 572
 573                 if (!Panner::equivalent (val, xpos)) {
 574                         in_pan_update = true;
 575                         pan_adjustments[which]->set_value (xpos);
 576                         in_pan_update = false;
 577                 }
 578         }
 579 }
 580
 581 void
 582 PannerUI::update_pan_bars (bool only_if_aplay)
 583 {
 584         uint32_t n;
 585         vector<Adjustment*>::iterator i;
 586
 587         in_pan_update = true;
 588
 589         /* this runs during automation playback, and moves the bar controllers
 590            and/or pucks around.
 591         */
 592
 593         for (i = pan_adjustments.begin(), n = 0; i != pan_adjustments.end(); ++i, ++n) {
 594                 float xpos, val;
 595
 596                 if (only_if_aplay) {
 597                         boost::shared_ptr<AutomationList> alist (_io->panner().streampanner(n).pan_control()->alist());
 598
 599                         if (!alist->automation_playback()) {
 600                                 continue;
 601                         }
 602                 }
 603
 604                 _io->panner().streampanner(n).get_effective_position (xpos);
 605                 val = (*i)->get_value ();
 606
 607                 if (!Panner::equivalent (val, xpos)) {
 608                         (*i)->set_value (xpos);
 609                 }
 610         }
 611
 612         in_pan_update = false;
 613 }
 614
 615 void
 616 PannerUI::pan_printer (char *buf, uint32_t len, Adjustment* adj)
 617 {
 618         float val = adj->get_value();
 619
 620         if (val == 0.0f) {
 621                 snprintf (buf, len, X_("L"));
 622         } else if (val == 1.0f) {
 623                 snprintf (buf, len, X_("R"));
 624         } else if (Panner::equivalent (val, 0.5f)) {
 625                 snprintf (buf, len, X_("C"));
 626         } else {
 627                 /* don't print anything */
 628                 buf[0] = '\0';
 629         }
 630 }
 631
 632 void
 633 PannerUI::update_pan_sensitive ()
 634 {
 635         bool sensitive = !(_io->panner().automation_state() & Play);
 636
 637         switch (_io->n_outputs().n_audio()) {
 638         case 0:
 639         case 1:
 640                 break;
 641         case 2:
 642                 for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 643                         (*i)->set_sensitive (sensitive);
 644                 }
 645                 break;
 646         default:
 647                 if (panner) {
 648                         panner->set_sensitive (sensitive);
 649                 }
 650                 break;
 651         }
 652 }
 653
 654 gint
 655 PannerUI::pan_automation_state_button_event (GdkEventButton *ev)
 656 {
 657         using namespace Menu_Helpers;
 658
 659         if (ev->type == GDK_BUTTON_RELEASE) {
 660                 return TRUE;
 661         }
 662
 663         switch (ev->button) {
 664         case 1:
 665                 pan_astate_menu.popup (1, ev->time);
 666                 break;
 667         default:
 668                 break;
 669         }
 670
 671         return TRUE;
 672 }
 673
 674 gint
 675 PannerUI::pan_automation_style_button_event (GdkEventButton *ev)
 676 {
 677         if (ev->type == GDK_BUTTON_RELEASE) {
 678                 return TRUE;
 679         }
 680
 681         switch (ev->button) {
 682         case 1:
 683                 pan_astyle_menu.popup (1, ev->time);
 684                 break;
 685         default:
 686                 break;
 687         }
 688         return TRUE;
 689 }
 690
 691 void
 692 PannerUI::pan_automation_style_changed ()
 693 {
 694         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_style_changed));
 695
 696         switch (_width) {
 697         case Wide:
 698                 pan_automation_style_button.set_label (astyle_string(_io->panner().automation_style()));
 699                 break;
 700         case Narrow:
 701                 pan_automation_style_button.set_label (short_astyle_string(_io->panner().automation_style()));
 702                 break;
 703         }
 704 }
 705
 706 void
 707 PannerUI::pan_automation_state_changed ()
 708 {
 709         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_state_changed));
 710
 711         bool x;
 712
 713         switch (_width) {
 714         case Wide:
 715           pan_automation_state_button.set_label (astate_string(_io->panner().automation_state()));
 716                 break;
 717         case Narrow:
 718           pan_automation_state_button.set_label (short_astate_string(_io->panner().automation_state()));
 719                 break;
 720         }
 721
 722         /* when creating a new session, we get to create busses (and
 723            sometimes tracks) with no outputs by the time they get
 724            here.
 725         */
 726
 727         if (_io->panner().empty()) {
 728                 return;
 729         }
 730
 731         x = (_io->panner().streampanner(0).pan_control()->alist()->automation_state() != Off);
 732
 733         if (pan_automation_state_button.get_active() != x) {
 734         ignore_toggle = true;
 735                 pan_automation_state_button.set_active (x);
 736                 ignore_toggle = false;
 737         }
 738
 739         update_pan_sensitive ();
 740
 741         /* start watching automation so that things move */
 742
 743         pan_watching.disconnect();
 744
 745         if (x) {
 746           pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &PannerUI::effective_pan_display));
 747         }
 748 }
 749
 750 string
 751 PannerUI::astate_string (AutoState state)
 752 {
 753         return _astate_string (state, false);
 754 }
 755
 756 string
 757 PannerUI::short_astate_string (AutoState state)
 758 {
 759         return _astate_string (state, true);
 760 }
 761
 762 string
 763 PannerUI::_astate_string (AutoState state, bool shrt)
 764 {
 765         string sstr;
 766
 767         switch (state) {
 768         case Off:
 769                 sstr = (shrt ? "M" : _("M"));
 770                 break;
 771         case Play:
 772                 sstr = (shrt ? "P" : _("P"));
 773                 break;
 774         case Touch:
 775                 sstr = (shrt ? "T" : _("T"));
 776                 break;
 777         case Write:
 778                 sstr = (shrt ? "W" : _("W"));
 779                 break;
 780         }
 781
 782         return sstr;
 783 }
 784
 785 string
 786 PannerUI::astyle_string (AutoStyle style)
 787 {
 788         return _astyle_string (style, false);
 789 }
 790
 791 string
 792 PannerUI::short_astyle_string (AutoStyle style)
 793 {
 794         return _astyle_string (style, true);
 795 }
 796
 797 string
 798 PannerUI::_astyle_string (AutoStyle style, bool shrt)
 799 {
 800         if (style & Trim) {
 801                 return _("Trim");
 802         } else {
 803                 /* XXX it might different in different languages */
 804
 805                 return (shrt ? _("Abs") : _("Abs"));
 806         }
 807 }