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   $Id$
  19 */
  20
  21 #include <limits.h>
  22
  23 #include <ardour/io.h>
  24 #include <ardour/dB.h>
  25 #include <gtkmm2ext/utils.h>
  26 #include <gtkmm2ext/stop_signal.h>
  27 #include <gtkmm2ext/barcontroller.h>
  28 #include <midi++/manager.h>
  29 #include <pbd/fastlog.h>
  30
  31 #include "ardour_ui.h"
  32 #include "panner_ui.h"
  33 #include "panner2d.h"
  34 #include "utils.h"
  35 #include "gui_thread.h"
  36
  37 #include <ardour/session.h>
  38 #include <ardour/panner.h>
  39 #include <ardour/route.h>
  40
  41 #include "i18n.h"
  42
  43 using namespace ARDOUR;
  44 using namespace PBD;
  45 using namespace Gtkmm2ext;
  46 using namespace Gtk;
  47 using namespace sigc;
  48
  49
  50 PannerUI::PannerUI (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 (61, 61);
  77
  78         panning_viewport.set_name (X_("BaseFrame"));
  79
  80         ARDOUR_UI::instance()->tooltips().set_tip (panning_link_button,
  81                                                    _("panning link control"));
  82         ARDOUR_UI::instance()->tooltips().set_tip (panning_link_direction_button,
  83                                                    _("panning link direction"));
  84
  85         pan_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
  86         pan_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
  87
  88         using namespace Menu_Helpers;
  89         pan_astate_menu.items().push_back (MenuElem (_("Off"),
  90                                                      bind (mem_fun (_io.panner(), &Panner::set_automation_state), (AutoState) Off)));
  91         pan_astate_menu.items().push_back (MenuElem (_("Play"),
  92                                                      bind (mem_fun (_io.panner(), &Panner::set_automation_state), (AutoState) Play)));
  93         pan_astate_menu.items().push_back (MenuElem (_("Write"),
  94                                                      bind (mem_fun (_io.panner(), &Panner::set_automation_state), (AutoState) Write)));
  95         pan_astate_menu.items().push_back (MenuElem (_("Touch"),
  96                                                      bind (mem_fun (_io.panner(), &Panner::set_automation_state), (AutoState) Touch)));
  97
  98         pan_astyle_menu.items().push_back (MenuElem (_("Trim")));
  99         pan_astyle_menu.items().push_back (MenuElem (_("Abs")));
 100
 101         pan_astate_menu.set_name ("ArdourContextMenu");
 102         pan_astyle_menu.set_name ("ArdourContextMenu");
 103
 104         pan_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_style_button_event), false);
 105         pan_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_state_button_event), false);
 106
 107         panning_link_button.set_name (X_("PanningLinkButton"));
 108         panning_link_direction_button.set_name (X_("PanningLinkDirectionButton"));
 109
 110         panning_link_box.pack_start (panning_link_button, true, true);
 111         panning_link_box.pack_start (panning_link_direction_button, true, true);
 112         panning_link_box.pack_start (pan_automation_state_button, true, true);
 113
 114         /* the pixmap will be reset at some point, but the key thing is that
 115            we need a pixmap in the button just to get started.
 116         */
 117         panning_link_direction_button.add (*(manage (new Image (get_xpm("forwardblarrow.xpm")))));
 118
 119         panning_link_direction_button.signal_clicked().connect
 120                 (mem_fun(*this, &PannerUI::panning_link_direction_clicked));
 121
 122         panning_link_button.signal_button_press_event().connect
 123                 (mem_fun(*this, &PannerUI::panning_link_button_press), false);
 124         panning_link_button.signal_button_release_event().connect
 125                 (mem_fun(*this, &PannerUI::panning_link_button_release), false);
 126
 127         panning_up.set_border_width (3);
 128         panning_down.set_border_width (3);
 129         panning_up.add (panning_up_arrow);
 130         panning_down.add (panning_down_arrow);
 131         panning_up.set_name (X_("PanScrollerBase"));
 132         panning_down.set_name (X_("PanScrollerBase"));
 133         panning_up_arrow.set_name (X_("PanScrollerArrow"));
 134         panning_down_arrow.set_name (X_("PanScrollerArrow"));
 135
 136         pan_vbox.set_spacing (4);
 137         pan_vbox.pack_start (panning_viewport, Gtk::PACK_SHRINK);
 138         pan_vbox.pack_start (panning_link_box, Gtk::PACK_SHRINK);
 139
 140         pack_start (pan_vbox, true, false);
 141
 142         panner = 0;
 143
 144         set_width(Narrow);
 145
 146         _io.panner().Changed.connect (mem_fun(*this, &PannerUI::panner_changed));
 147         _io.panner().LinkStateChanged.connect (mem_fun(*this, &PannerUI::update_pan_linkage));
 148         _io.panner().StateChanged.connect (mem_fun(*this, &PannerUI::update_pan_state));
 149
 150         pan_changed (0);
 151         update_pan_sensitive ();
 152         update_pan_linkage ();
 153         pan_automation_state_changed ();
 154 }
 155
 156 bool
 157 PannerUI::panning_link_button_press (GdkEventButton* ev)
 158 {
 159         cerr << "link press\n";
 160         return true;
 161 }
 162
 163 bool
 164 PannerUI::panning_link_button_release (GdkEventButton* ev)
 165 {
 166         cerr << "link release\n";
 167         if (!ignore_toggle) {
 168                 _io.panner().set_linked (!_io.panner().linked());
 169         }
 170         return true;
 171 }
 172
 173 void
 174 PannerUI::panning_link_direction_clicked()
 175 {
 176         switch (_io.panner().link_direction()) {
 177         case Panner::SameDirection:
 178                 _io.panner().set_link_direction (Panner::OppositeDirection);
 179                 break;
 180         default:
 181                 _io.panner().set_link_direction (Panner::SameDirection);
 182                 break;
 183         }
 184 }
 185
 186 void
 187 PannerUI::update_pan_linkage ()
 188 {
 189         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::update_pan_linkage));
 190
 191         bool x = _io.panner().linked();
 192         bool bx = panning_link_button.get_active();
 193
 194         if (x != bx) {
 195
 196                 ignore_toggle = true;
 197                 panning_link_button.set_active (x);
 198                 ignore_toggle = false;
 199         }
 200
 201         panning_link_direction_button.set_sensitive (x);
 202
 203         switch (_io.panner().link_direction()) {
 204         case Panner::SameDirection:
 205                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm ("forwardblarrow.xpm")))));
 206                 break;
 207         default:
 208                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm("revdblarrow.xpm")))));
 209                 break;
 210         }
 211 }
 212
 213 void
 214 PannerUI::set_width (Width w)
 215 {
 216         switch (w) {
 217         case Wide:
 218                 panning_viewport.set_size_request (61, 61);
 219                 if (panner) {
 220                         panner->set_size_request (61, 61);
 221                 }
 222                 for (vector<BarController*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 223                                 (*i)->set_size_request (61, 15);
 224                 }
 225                 panning_link_button.set_label (_("link"));
 226                 break;
 227         case Narrow:
 228                 panning_viewport.set_size_request (31, 61);
 229                 if (panner) {
 230                         panner->set_size_request (31, 61);
 231                 }
 232                 for (vector<BarController*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 233                                 (*i)->set_size_request (31, 15);
 234                 }
 235                 panning_link_button.set_label (_("L"));
 236                 break;
 237         }
 238
 239         _width = w;
 240 }
 241
 242
 243 PannerUI::~PannerUI ()
 244 {
 245         for (vector<Adjustment*>::iterator i = pan_adjustments.begin(); i != pan_adjustments.end(); ++i) {
 246                 delete (*i);
 247         }
 248
 249         for (vector<BarController*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 250                 delete (*i);
 251         }
 252
 253         if (panner) {
 254                 delete panner;
 255         }
 256
 257         if (pan_menu) {
 258                 delete pan_menu;
 259         }
 260
 261 }
 262
 263
 264 void
 265 PannerUI::panner_changed ()
 266 {
 267         ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::panner_changed));
 268         setup_pan ();
 269 }
 270
 271 void
 272 PannerUI::update_pan_state ()
 273 {
 274         /* currently nothing to do */
 275         // ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::update_panner_state));
 276 }
 277
 278 void
 279 PannerUI::setup_pan ()
 280 {
 281         uint32_t nouts = _io.n_outputs ();
 282
 283         if (nouts == 0 || nouts == 1) {
 284
 285                 while (!pan_adjustments.empty()) {
 286                         delete pan_bars.back();
 287                         pan_bars.pop_back ();
 288                         delete pan_adjustments.back();
 289                         pan_adjustments.pop_back ();
 290                 }
 291
 292         } else if (nouts == 2) {
 293
 294                 vector<Adjustment*>::size_type asz;
 295                 uint32_t npans = _io.panner().size();
 296
 297                 while (!pan_adjustments.empty()) {
 298                         delete pan_bars.back();
 299                         pan_bars.pop_back ();
 300                         delete pan_adjustments.back();
 301                         pan_adjustments.pop_back ();
 302                 }
 303
 304                 while ((asz = pan_adjustments.size()) < npans) {
 305
 306                         float x;
 307                         BarController* bc;
 308
 309                         /* initialize adjustment with current value of panner */
 310
 311                         _io.panner()[asz]->get_position (x);
 312
 313                         pan_adjustments.push_back (new Adjustment (x, 0, 1.0, 0.05, 0.1));
 314                         pan_adjustments.back()->signal_value_changed().connect (bind (mem_fun(*this, &PannerUI::pan_adjustment_changed), (uint32_t) asz));
 315
 316                         _io.panner()[asz]->Changed.connect (bind (mem_fun(*this, &PannerUI::pan_value_changed), (uint32_t) asz));
 317
 318                         bc = new BarController (*pan_adjustments[asz],
 319                                                 _io.panner()[asz]->control(),
 320                                                 bind (mem_fun(*this, &PannerUI::pan_printer), pan_adjustments[asz]));
 321
 322                         bc->set_name ("PanSlider");
 323                         bc->set_shadow_type (Gtk::SHADOW_NONE);
 324                         bc->set_style (BarController::Line);
 325
 326                         bc->StartGesture.connect (bind (mem_fun (_io, &IO::start_pan_touch), (uint32_t) asz));
 327                         bc->StopGesture.connect (bind (mem_fun (_io, &IO::end_pan_touch), (uint32_t) asz));
 328
 329                         char buf[64];
 330 #ifdef __APPLE__
 331                         snprintf (buf, sizeof (buf), _("panner for channel %lu"), asz + 1);
 332 #else
 333                         snprintf (buf, sizeof (buf), _("panner for channel %u"), asz + 1);
 334 #endif
 335                         ARDOUR_UI::instance()->tooltips().set_tip (bc->event_widget(), buf);
 336
 337                         bc->event_widget().signal_button_release_event().connect
 338                                 (bind (mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) asz));
 339
 340                         pan_bars.push_back (bc);
 341                         switch (_width) {
 342                         case Wide:
 343                                 pan_bars.back()->set_size_request (61, 15);
 344                                 break;
 345                         case Narrow:
 346                                 pan_bars.back()->set_size_request (31, 15);
 347                                 break;
 348                         }
 349
 350                         pan_bar_packer.pack_start (*pan_bars.back(), false, false);
 351                 }
 352
 353                 /* now that we actually have the pan bars,
 354                    set their sensitivity based on current
 355                    automation state.
 356                 */
 357
 358                 update_pan_sensitive ();
 359
 360                 panning_viewport.remove ();
 361                 panning_viewport.add (pan_bar_packer);
 362                 panning_viewport.show_all ();
 363
 364         } else {
 365
 366                 int w = 0;
 367
 368                 switch (_width) {
 369                 case Wide:
 370                         w = 61;
 371                         break;
 372                 case Narrow:
 373                         w = 31;
 374                         break;
 375                 }
 376
 377                 if (panner == 0) {
 378                         panner = new Panner2d (_io.panner(), w, 61);
 379                         panner->set_name ("MixerPanZone");
 380                         panner->show ();
 381                 }
 382
 383                 update_pan_sensitive ();
 384                 panner->reset (_io.n_inputs());
 385                 panner->set_size_request (w, 61);
 386
 387                 /* and finally, add it to the panner frame */
 388
 389                 panning_viewport.remove ();
 390                 panning_viewport.add (*panner);
 391                 panning_viewport.show_all ();
 392         }
 393 }
 394
 395 bool
 396 PannerUI::pan_button_event (GdkEventButton* ev, uint32_t which)
 397 {
 398         switch (ev->button) {
 399         case 3:
 400                 if (pan_menu == 0) {
 401                         pan_menu = manage (new Menu);
 402                         pan_menu->set_name ("ArdourContextMenu");
 403                 }
 404                 build_pan_menu (which);
 405                 pan_menu->popup (1, ev->time);
 406                 return true;
 407                 break;
 408         default:
 409                 return false;
 410         }
 411
 412         return false; // what's wrong with gcc?
 413 }
 414
 415 void
 416 PannerUI::build_pan_menu (uint32_t which)
 417 {
 418         using namespace Menu_Helpers;
 419         MenuList& items (pan_menu->items());
 420
 421         items.clear ();
 422
 423         items.push_back (CheckMenuElem (_("Mute")));
 424
 425         /* set state first, connect second */
 426
 427         (dynamic_cast<CheckMenuItem*> (&items.back()))->set_active (_io.panner()[which]->muted());
 428         (dynamic_cast<CheckMenuItem*> (&items.back()))->signal_toggled().connect
 429                 (bind (mem_fun(*this, &PannerUI::pan_mute), which));
 430
 431         items.push_back (CheckMenuElem (_("Bypass"), mem_fun(*this, &PannerUI::pan_bypass_toggle)));
 432         bypass_menu_item = static_cast<CheckMenuItem*> (&items.back());
 433
 434         /* set state first, connect second */
 435
 436         bypass_menu_item->set_active (_io.panner().bypassed());
 437         bypass_menu_item->signal_toggled().connect (mem_fun(*this, &PannerUI::pan_bypass_toggle));
 438
 439         items.push_back (MenuElem (_("Reset"), mem_fun(*this, &PannerUI::pan_reset)));
 440         items.push_back (SeparatorElem());
 441         items.push_back (MenuElem (_("Reset all")));
 442 }
 443
 444 void
 445 PannerUI::pan_mute (uint32_t which)
 446 {
 447         StreamPanner* sp = _io.panner()[which];
 448         sp->set_muted (!sp->muted());
 449 }
 450
 451 void
 452 PannerUI::pan_bypass_toggle ()
 453 {
 454         if (bypass_menu_item && (_io.panner().bypassed() != bypass_menu_item->get_active())) {
 455                 _io.panner().set_bypassed (!_io.panner().bypassed());
 456         }
 457 }
 458
 459 void
 460 PannerUI::pan_reset ()
 461 {
 462 }
 463
 464 void
 465 PannerUI::effective_pan_display ()
 466 {
 467         if (_io.panner().empty()) {
 468                 return;
 469         }
 470
 471         switch (_io.n_outputs()) {
 472         case 0:
 473         case 1:
 474                 /* relax */
 475                 break;
 476
 477         case 2:
 478                 update_pan_bars (true);
 479                 break;
 480
 481         default:
 482                 //panner->move_puck (pan_value (v, right), 0.5);
 483                 break;
 484         }
 485 }
 486
 487 void
 488 PannerUI::pan_changed (void *src)
 489 {
 490         if (src == this) {
 491                 return;
 492         }
 493
 494         switch (_io.panner().size()) {
 495         case 0:
 496                 panning_link_direction_button.set_sensitive (false);
 497                 panning_link_button.set_sensitive (false);
 498                 return;
 499         case 1:
 500                 panning_link_direction_button.set_sensitive (false);
 501                 panning_link_button.set_sensitive (false);
 502                 break;
 503         default:
 504                 panning_link_direction_button.set_sensitive (true);
 505                 panning_link_button.set_sensitive (true);
 506         }
 507
 508         uint32_t nouts = _io.n_outputs();
 509
 510         switch (nouts) {
 511         case 0:
 512         case 1:
 513                 /* relax */
 514                 break;
 515
 516         case 2:
 517                 update_pan_bars (false);
 518                 break;
 519
 520         default:
 521                 // panner->move_puck (pan_value (pans[0], pans[1]), 0.5);
 522                 break;
 523         }
 524 }
 525
 526 void
 527 PannerUI::pan_adjustment_changed (uint32_t which)
 528 {
 529         if (!in_pan_update && which < _io.panner().size()) {
 530
 531                 float xpos;
 532                 float val = pan_adjustments[which]->get_value ();
 533                 _io.panner()[which]->get_position (xpos);
 534
 535                 /* add a kinda-sorta detent for the middle */
 536
 537                 if (val != 0.5 && Panner::equivalent (val, 0.5)) {
 538                         /* this is going to be reentrant, so just
 539                            return after it.
 540                         */
 541
 542                         in_pan_update = true;
 543                         pan_adjustments[which]->set_value (0.5);
 544                         in_pan_update = false;
 545                         return;
 546                 }
 547
 548                 if (!Panner::equivalent (val, xpos)) {
 549
 550                         _io.panner()[which]->set_position (val);
 551                         /* XXX
 552                            the panner objects have no access to the session,
 553                            so do this here. ick.
 554                         */
 555                         _session.set_dirty();
 556                 }
 557         }
 558 }
 559
 560 void
 561 PannerUI::pan_value_changed (uint32_t which)
 562 {
 563         ENSURE_GUI_THREAD (bind (mem_fun(*this, &PannerUI::pan_value_changed), which));
 564
 565         if (_io.n_outputs() > 1 && which < _io.panner().size()) {
 566                 float xpos;
 567                 float val = pan_adjustments[which]->get_value ();
 568
 569                 _io.panner()[which]->get_position (xpos);
 570
 571                 if (!Panner::equivalent (val, xpos)) {
 572                         in_pan_update = true;
 573                         pan_adjustments[which]->set_value (xpos);
 574                         in_pan_update = false;
 575                 }
 576         }
 577 }
 578
 579 void
 580 PannerUI::update_pan_bars (bool only_if_aplay)
 581 {
 582         uint32_t n;
 583         vector<Adjustment*>::iterator i;
 584
 585         in_pan_update = true;
 586
 587         /* this runs during automation playback, and moves the bar controllers
 588            and/or pucks around.
 589         */
 590
 591         for (i = pan_adjustments.begin(), n = 0; i != pan_adjustments.end(); ++i, ++n) {
 592                 float xpos, val;
 593
 594                 if (only_if_aplay) {
 595                         AutomationList& alist (_io.panner()[n]->automation());
 596
 597                         if (!alist.automation_playback()) {
 598                                 continue;
 599                         }
 600                 }
 601
 602                 _io.panner()[n]->get_effective_position (xpos);
 603                 val = (*i)->get_value ();
 604
 605                 if (!Panner::equivalent (val, xpos)) {
 606                         (*i)->set_value (xpos);
 607                 }
 608         }
 609
 610         in_pan_update = false;
 611 }
 612
 613 void
 614 PannerUI::pan_printer (char *buf, uint32_t len, Adjustment* adj)
 615 {
 616         float val = adj->get_value();
 617
 618         if (val == 0.0f) {
 619                 snprintf (buf, len, X_("L"));
 620         } else if (val == 1.0f) {
 621                 snprintf (buf, len, X_("R"));
 622         } else if (Panner::equivalent (val, 0.5f)) {
 623                 snprintf (buf, len, X_("C"));
 624         } else {
 625                 /* don't print anything */
 626                 buf[0] = '\0';
 627         }
 628 }
 629
 630 void
 631 PannerUI::update_pan_sensitive ()
 632 {
 633         bool sensitive = !(_io.panner().automation_state() & Play);
 634
 635         switch (_io.n_outputs()) {
 636         case 0:
 637         case 1:
 638                 break;
 639         case 2:
 640                 for (vector<BarController*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 641                         (*i)->set_sensitive (sensitive);
 642                 }
 643                 break;
 644         default:
 645                 if (panner) {
 646                         panner->set_sensitive (sensitive);
 647                 }
 648                 break;
 649         }
 650 }
 651
 652 gint
 653 PannerUI::pan_automation_state_button_event (GdkEventButton *ev)
 654 {
 655         using namespace Menu_Helpers;
 656
 657         if (ev->type == GDK_BUTTON_RELEASE) {
 658                 return TRUE;
 659         }
 660
 661         switch (ev->button) {
 662         case 1:
 663                 pan_astate_menu.popup (1, ev->time);
 664                 break;
 665         default:
 666                 break;
 667         }
 668
 669         return TRUE;
 670 }
 671
 672 gint
 673 PannerUI::pan_automation_style_button_event (GdkEventButton *ev)
 674 {
 675         if (ev->type == GDK_BUTTON_RELEASE) {
 676                 return TRUE;
 677         }
 678
 679         switch (ev->button) {
 680         case 1:
 681                 pan_astyle_menu.popup (1, ev->time);
 682                 break;
 683         default:
 684                 break;
 685         }
 686         return TRUE;
 687 }
 688
 689 void
 690 PannerUI::pan_automation_style_changed ()
 691 {
 692         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_style_changed));
 693
 694         switch (_width) {
 695         case Wide:
 696                 pan_automation_style_button.set_label (astyle_string(_io.panner().automation_style()));
 697                 break;
 698         case Narrow:
 699                 pan_automation_style_button.set_label (short_astyle_string(_io.panner().automation_style()));
 700                 break;
 701         }
 702 }
 703
 704 void
 705 PannerUI::pan_automation_state_changed ()
 706 {
 707         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_state_changed));
 708
 709         bool x;
 710
 711         switch (_width) {
 712         case Wide:
 713           pan_automation_state_button.set_label (astate_string(_io.panner().automation_state()));
 714                 break;
 715         case Narrow:
 716           pan_automation_state_button.set_label (short_astate_string(_io.panner().automation_state()));
 717                 break;
 718         }
 719
 720         /* when creating a new session, we get to create busses (and
 721            sometimes tracks) with no outputs by the time they get
 722            here.
 723         */
 724
 725         if (_io.panner().empty()) {
 726                 return;
 727         }
 728
 729         x = (_io.panner().front()->automation().automation_state() != Off);
 730
 731         if (pan_automation_state_button.get_active() != x) {
 732         ignore_toggle = true;
 733                 pan_automation_state_button.set_active (x);
 734                 ignore_toggle = false;
 735         }
 736
 737         update_pan_sensitive ();
 738
 739         /* start watching automation so that things move */
 740
 741         pan_watching.disconnect();
 742
 743         if (x) {
 744           pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &PannerUI::effective_pan_display));
 745         }
 746 }
 747
 748 string
 749 PannerUI::astate_string (AutoState state)
 750 {
 751         return _astate_string (state, false);
 752 }
 753
 754 string
 755 PannerUI::short_astate_string (AutoState state)
 756 {
 757         return _astate_string (state, true);
 758 }
 759
 760 string
 761 PannerUI::_astate_string (AutoState state, bool shrt)
 762 {
 763         string sstr;
 764
 765         switch (state) {
 766         case Off:
 767                 sstr = (shrt ? "O" : _("O"));
 768                 break;
 769         case Play:
 770                 sstr = (shrt ? "P" : _("P"));
 771                 break;
 772         case Touch:
 773                 sstr = (shrt ? "T" : _("T"));
 774                 break;
 775         case Write:
 776                 sstr = (shrt ? "W" : _("W"));
 777                 break;
 778         }
 779
 780         return sstr;
 781 }
 782
 783 string
 784 PannerUI::astyle_string (AutoStyle style)
 785 {
 786         return _astyle_string (style, false);
 787 }
 788
 789 string
 790 PannerUI::short_astyle_string (AutoStyle style)
 791 {
 792         return _astyle_string (style, true);
 793 }
 794
 795 string
 796 PannerUI::_astyle_string (AutoStyle style, bool shrt)
 797 {
 798         if (style & Trim) {
 799                 return _("Trim");
 800         } else {
 801                 /* XXX it might different in different languages */
 802
 803                 return (shrt ? _("Abs") : _("Abs"));
 804         }
 805 }