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