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