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 (Session& s)
  51         : _session (s),
  52           hAdjustment(0.0, 0.0, 0.0),
  53           vAdjustment(0.0, 0.0, 0.0),
  54           panning_viewport(hAdjustment, vAdjustment),
  55           panning_up_arrow (Gtk::ARROW_UP, Gtk::SHADOW_OUT),
  56           panning_down_arrow (Gtk::ARROW_DOWN, Gtk::SHADOW_OUT),
  57           panning_link_button (_("link")),
  58           pan_automation_style_button (""),
  59           pan_automation_state_button ("")
  60 {
  61         ignore_toggle = false;
  62         pan_menu = 0;
  63         pan_astate_menu = 0;
  64         pan_astyle_menu = 0;
  65         in_pan_update = false;
  66
  67         pan_automation_style_button.set_name ("MixerAutomationModeButton");
  68         pan_automation_state_button.set_name ("MixerAutomationPlaybackButton");
  69
  70         ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_state_button, _("Pan automation mode"));
  71         ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_style_button, _("Pan automation type"));
  72
  73         //set_size_request_to_display_given_text (pan_automation_state_button, X_("O"), 2, 2);
  74         //set_size_request_to_display_given_text (pan_automation_style_button, X_("0"), 2, 2);
  75
  76         pan_bar_packer.set_size_request (-1, 61);
  77         panning_viewport.set_size_request (-1, 61);
  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         pan_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_style_button_event), false);
  89         pan_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_state_button_event), false);
  90
  91         panning_link_button.set_name (X_("PanningLinkButton"));
  92         panning_link_direction_button.set_name (X_("PanningLinkDirectionButton"));
  93
  94         panning_link_box.pack_start (panning_link_button, true, true);
  95         panning_link_box.pack_start (panning_link_direction_button, true, true);
  96         panning_link_box.pack_start (pan_automation_state_button, true, true);
  97
  98         /* the pixmap will be reset at some point, but the key thing is that
  99            we need a pixmap in the button just to get started.
 100         */
 101         panning_link_direction_button.add (*(manage (new Image (get_xpm("forwardblarrow.xpm")))));
 102
 103         panning_link_direction_button.signal_clicked().connect
 104                 (mem_fun(*this, &PannerUI::panning_link_direction_clicked));
 105
 106         panning_link_button.signal_button_press_event().connect
 107                 (mem_fun(*this, &PannerUI::panning_link_button_press), false);
 108         panning_link_button.signal_button_release_event().connect
 109                 (mem_fun(*this, &PannerUI::panning_link_button_release), false);
 110
 111         panning_up.set_border_width (3);
 112         panning_down.set_border_width (3);
 113         panning_up.add (panning_up_arrow);
 114         panning_down.add (panning_down_arrow);
 115         panning_up.set_name (X_("PanScrollerBase"));
 116         panning_down.set_name (X_("PanScrollerBase"));
 117         panning_up_arrow.set_name (X_("PanScrollerArrow"));
 118         panning_down_arrow.set_name (X_("PanScrollerArrow"));
 119
 120         pan_vbox.set_spacing (2);
 121         pan_vbox.pack_start (panning_viewport, Gtk::PACK_SHRINK);
 122         pan_vbox.pack_start (panning_link_box, Gtk::PACK_SHRINK);
 123
 124         pack_start (pan_vbox, true, true);
 125
 126         panner = 0;
 127         big_window = 0;
 128
 129         set_width(Narrow);
 130 }
 131
 132 void
 133 PannerUI::set_io (boost::shared_ptr<IO> io)
 134 {
 135         connections.clear ();
 136
 137         if (pan_astyle_menu) {
 138                 delete pan_astyle_menu;
 139                 pan_astyle_menu = 0;
 140         }
 141
 142         if (pan_astate_menu) {
 143                 delete pan_astate_menu;
 144                 pan_astate_menu = 0;
 145         }
 146
 147         _io = io;
 148
 149         connections.push_back (_io->panner().Changed.connect (mem_fun(*this, &PannerUI::panner_changed)));
 150         connections.push_back (_io->panner().LinkStateChanged.connect (mem_fun(*this, &PannerUI::update_pan_linkage)));
 151         connections.push_back (_io->panner().StateChanged.connect (mem_fun(*this, &PannerUI::update_pan_state)));
 152
 153         if (panner) {
 154                 delete panner;
 155                 panner = 0;
 156         }
 157
 158         setup_pan ();
 159
 160         pan_changed (0);
 161         update_pan_sensitive ();
 162         update_pan_linkage ();
 163         pan_automation_state_changed ();
 164
 165 #if WHERE_DOES_THIS_LIVE
 166         pan_bar_packer.show();
 167         panning_viewport.show();
 168         panning_up.show();
 169         panning_up_arrow.show();
 170         panning_down.show();
 171         panning_down_arrow.show();
 172         pan_vbox.show();
 173         panning_link_button.show();
 174         panning_link_direction_button.show();
 175         panning_link_box.show();
 176         pan_automation_style_button.show();
 177         pan_automation_state_button.show();
 178         show();
 179 #endif
 180 }
 181
 182 void
 183 PannerUI::build_astate_menu ()
 184 {
 185         using namespace Menu_Helpers;
 186
 187         if (pan_astate_menu == 0) {
 188                 pan_astate_menu = new Menu;
 189                 pan_astate_menu->set_name ("ArdourContextMenu");
 190         } else {
 191                 pan_astate_menu->items().clear ();
 192         }
 193
 194         pan_astate_menu->items().push_back (MenuElem (_("Manual"),
 195                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Off)));
 196         pan_astate_menu->items().push_back (MenuElem (_("Play"),
 197                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Play)));
 198         pan_astate_menu->items().push_back (MenuElem (_("Write"),
 199                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Write)));
 200         pan_astate_menu->items().push_back (MenuElem (_("Touch"),
 201                                                      bind (mem_fun (_io->panner(), &Panner::set_automation_state), (AutoState) Touch)));
 202
 203 }
 204
 205 void
 206 PannerUI::build_astyle_menu ()
 207 {
 208         using namespace Menu_Helpers;
 209
 210         if (pan_astyle_menu == 0) {
 211                 pan_astyle_menu = new Menu;
 212                 pan_astyle_menu->set_name ("ArdourContextMenu");
 213         } else {
 214                 pan_astyle_menu->items().clear();
 215         }
 216
 217         pan_astyle_menu->items().push_back (MenuElem (_("Trim")));
 218         pan_astyle_menu->items().push_back (MenuElem (_("Abs")));
 219 }
 220
 221 boost::shared_ptr<PBD::Controllable>
 222 PannerUI::get_controllable()
 223 {
 224         return pan_bars[0]->get_controllable();
 225 }
 226
 227 bool
 228 PannerUI::panning_link_button_press (GdkEventButton* ev)
 229 {
 230         return true;
 231 }
 232
 233 bool
 234 PannerUI::panning_link_button_release (GdkEventButton* ev)
 235 {
 236         if (!ignore_toggle) {
 237                 _io->panner().set_linked (!_io->panner().linked());
 238         }
 239         return true;
 240 }
 241
 242 void
 243 PannerUI::panning_link_direction_clicked()
 244 {
 245         switch (_io->panner().link_direction()) {
 246         case Panner::SameDirection:
 247                 _io->panner().set_link_direction (Panner::OppositeDirection);
 248                 break;
 249         default:
 250                 _io->panner().set_link_direction (Panner::SameDirection);
 251                 break;
 252         }
 253 }
 254
 255 void
 256 PannerUI::update_pan_linkage ()
 257 {
 258         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::update_pan_linkage));
 259
 260         bool x = _io->panner().linked();
 261         bool bx = panning_link_button.get_active();
 262
 263         if (x != bx) {
 264
 265                 ignore_toggle = true;
 266                 panning_link_button.set_active (x);
 267                 ignore_toggle = false;
 268         }
 269
 270         panning_link_direction_button.set_sensitive (x);
 271
 272         switch (_io->panner().link_direction()) {
 273         case Panner::SameDirection:
 274                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm ("forwardblarrow.xpm")))));
 275                 break;
 276         default:
 277                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm("revdblarrow.xpm")))));
 278                 break;
 279         }
 280 }
 281
 282 void
 283 PannerUI::set_width (Width w)
 284 {
 285         switch (w) {
 286         case Wide:
 287                 panning_link_button.set_label (_("link"));
 288                 break;
 289         case Narrow:
 290                 panning_link_button.set_label (_("L"));
 291                 break;
 292         }
 293
 294         _width = w;
 295 }
 296
 297
 298 PannerUI::~PannerUI ()
 299 {
 300         for (vector<Adjustment*>::iterator i = pan_adjustments.begin(); i != pan_adjustments.end(); ++i) {
 301                 delete (*i);
 302         }
 303
 304         for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 305                 delete (*i);
 306         }
 307
 308         if (panner) {
 309                 delete panner;
 310         }
 311
 312         if (big_window) {
 313                 delete big_window;
 314         }
 315
 316         if (pan_menu) {
 317                 delete pan_menu;
 318         }
 319
 320         if (pan_astyle_menu) {
 321                 delete pan_astyle_menu;
 322         }
 323
 324         if (pan_astate_menu) {
 325                 delete pan_astate_menu;
 326         }
 327 }
 328
 329
 330 void
 331 PannerUI::panner_changed ()
 332 {
 333         ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::panner_changed));
 334         setup_pan ();
 335         pan_changed (0);
 336 }
 337
 338 void
 339 PannerUI::update_pan_state ()
 340 {
 341         /* currently nothing to do */
 342         // ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::update_panner_state));
 343 }
 344
 345 void
 346 PannerUI::setup_pan ()
 347 {
 348         uint32_t nouts = _io->n_outputs ().n_audio();
 349
 350         if (nouts == 0 || nouts == 1) {
 351
 352                 while (!pan_adjustments.empty()) {
 353                         delete pan_bars.back();
 354                         pan_bars.pop_back ();
 355                         delete pan_adjustments.back();
 356                         pan_adjustments.pop_back ();
 357                 }
 358
 359                 /* stick something into the panning viewport so that it redraws */
 360
 361                 EventBox* eb = manage (new EventBox());
 362                 panning_viewport.remove ();
 363                 panning_viewport.add (*eb);
 364                 panning_viewport.show_all ();
 365
 366         } else if (nouts == 2) {
 367
 368                 vector<Adjustment*>::size_type asz;
 369                 uint32_t npans = _io->panner().npanners();
 370
 371                 while (!pan_adjustments.empty()) {
 372                         delete pan_bars.back();
 373                         pan_bars.pop_back ();
 374                         delete pan_adjustments.back();
 375                         pan_adjustments.pop_back ();
 376                 }
 377
 378                 while ((asz = pan_adjustments.size()) < npans) {
 379
 380                         float x, rx;
 381                         PannerBar* bc;
 382
 383                         /* initialize adjustment with 0.0 (L) or 1.0 (R) for the first and second panners,
 384                            which serves as a default, otherwise use current value */
 385
 386                         rx = _io->panner().pan_control( asz)->get_value();
 387
 388                         if (npans == 1) {
 389                                 x = 0.5;
 390                         } else if (asz == 0) {
 391                                 x = 0.0;
 392                         } else if (asz == 1) {
 393                                 x = 1.0;
 394                         } else {
 395                                 x = rx;
 396                         }
 397
 398                         pan_adjustments.push_back (new Adjustment (x, 0, 1.0, 0.05, 0.1));
 399                         bc = new PannerBar (*pan_adjustments[asz],
 400                                 boost::static_pointer_cast<PBD::Controllable>( _io->panner().pan_control( asz )) );
 401
 402                         /* now set adjustment with current value of panner, then connect the signals */
 403                         pan_adjustments.back()->set_value(rx);
 404                         pan_adjustments.back()->signal_value_changed().connect (bind (mem_fun(*this, &PannerUI::pan_adjustment_changed), (uint32_t) asz));
 405
 406                         _io->panner().pan_control( asz )->Changed.connect (bind (mem_fun(*this, &PannerUI::pan_value_changed), (uint32_t) asz));
 407
 408
 409                         bc->set_name ("PanSlider");
 410                         bc->set_shadow_type (Gtk::SHADOW_NONE);
 411
 412                         bc->StartGesture.connect (bind (mem_fun (*_io, &IO::start_pan_touch), (uint32_t) asz));
 413                         bc->StopGesture.connect (bind (mem_fun (*_io, &IO::end_pan_touch), (uint32_t) asz));
 414
 415                         char buf[64];
 416                         snprintf (buf, sizeof (buf), _("panner for channel %zu"), asz + 1);
 417                         ARDOUR_UI::instance()->tooltips().set_tip (bc->event_widget(), buf);
 418
 419                         bc->event_widget().signal_button_release_event().connect
 420                                 (bind (mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) asz));
 421
 422                         bc->set_size_request (-1, pan_bar_height);
 423
 424                         pan_bars.push_back (bc);
 425                         pan_bar_packer.pack_start (*bc, false, false);
 426                 }
 427
 428                 /* now that we actually have the pan bars,
 429                    set their sensitivity based on current
 430                    automation state.
 431                 */
 432
 433                 update_pan_sensitive ();
 434
 435                 panning_viewport.remove ();
 436                 panning_viewport.add (pan_bar_packer);
 437                 panning_viewport.show_all ();
 438
 439         } else {
 440
 441                 if (panner == 0) {
 442                         panner = new Panner2d (_io->panner(), 61);
 443                         panner->set_name ("MixerPanZone");
 444                         panner->show ();
 445
 446
 447                         panner->signal_button_press_event().connect
 448                                 (bind (mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) 0), false);
 449                 }
 450
 451                 update_pan_sensitive ();
 452                 panner->reset (_io->n_inputs().n_audio());
 453                 if (big_window) {
 454                         big_window->reset (_io->n_inputs().n_audio());
 455                 }
 456                 panner->set_size_request (-1, 61);
 457
 458                 /* and finally, add it to the panner frame */
 459
 460                 panning_viewport.remove ();
 461                 panning_viewport.add (*panner);
 462                 panning_viewport.show_all ();
 463         }
 464 }
 465
 466 bool
 467 PannerUI::pan_button_event (GdkEventButton* ev, uint32_t which)
 468 {
 469         switch (ev->button) {
 470         case 1:
 471                 if (panner && ev->type == GDK_2BUTTON_PRESS) {
 472                         if (!big_window) {
 473                                 big_window = new Panner2dWindow (panner->get_panner(), 400, _io->n_inputs().n_audio());
 474                         }
 475                         big_window->show ();
 476                         return true;
 477                 }
 478                 break;
 479
 480         case 3:
 481                 if (pan_menu == 0) {
 482                         pan_menu = manage (new Menu);
 483                         pan_menu->set_name ("ArdourContextMenu");
 484                 }
 485                 build_pan_menu (which);
 486                 pan_menu->popup (1, ev->time);
 487                 return true;
 488                 break;
 489         default:
 490                 return false;
 491         }
 492
 493         return false; // what's wrong with gcc?
 494 }
 495
 496 void
 497 PannerUI::build_pan_menu (uint32_t which)
 498 {
 499         using namespace Menu_Helpers;
 500         MenuList& items (pan_menu->items());
 501
 502         items.clear ();
 503
 504         items.push_back (CheckMenuElem (_("Mute")));
 505
 506         /* set state first, connect second */
 507
 508         (dynamic_cast<CheckMenuItem*> (&items.back()))->set_active (_io->panner().streampanner(which).muted());
 509         (dynamic_cast<CheckMenuItem*> (&items.back()))->signal_toggled().connect
 510                 (bind (mem_fun(*this, &PannerUI::pan_mute), which));
 511
 512         items.push_back (CheckMenuElem (_("Bypass"), mem_fun(*this, &PannerUI::pan_bypass_toggle)));
 513         bypass_menu_item = static_cast<CheckMenuItem*> (&items.back());
 514
 515         /* set state first, connect second */
 516
 517         bypass_menu_item->set_active (_io->panner().bypassed());
 518         bypass_menu_item->signal_toggled().connect (mem_fun(*this, &PannerUI::pan_bypass_toggle));
 519
 520         items.push_back (MenuElem (_("Reset"), mem_fun(*this, &PannerUI::pan_reset)));
 521         items.push_back (SeparatorElem());
 522         items.push_back (MenuElem (_("Reset all")));
 523 }
 524
 525 void
 526 PannerUI::pan_mute (uint32_t which)
 527 {
 528         StreamPanner& sp = _io->panner().streampanner(which);
 529         sp.set_muted (!sp.muted());
 530 }
 531
 532 void
 533 PannerUI::pan_bypass_toggle ()
 534 {
 535         if (bypass_menu_item && (_io->panner().bypassed() != bypass_menu_item->get_active())) {
 536                 _io->panner().set_bypassed (!_io->panner().bypassed());
 537         }
 538 }
 539
 540 void
 541 PannerUI::pan_reset ()
 542 {
 543 }
 544
 545 void
 546 PannerUI::effective_pan_display ()
 547 {
 548         if (_io->panner().empty()) {
 549                 return;
 550         }
 551
 552         switch (_io->n_outputs().n_audio()) {
 553         case 0:
 554         case 1:
 555                 /* relax */
 556                 break;
 557
 558         case 2:
 559                 update_pan_bars (true);
 560                 break;
 561
 562         default:
 563                 //panner->move_puck (pan_value (v, right), 0.5);
 564                 break;
 565         }
 566 }
 567
 568 void
 569 PannerUI::pan_changed (void *src)
 570 {
 571         if (src == this) {
 572                 return;
 573         }
 574
 575         switch (_io->panner().npanners()) {
 576         case 0:
 577                 panning_link_direction_button.set_sensitive (false);
 578                 panning_link_button.set_sensitive (false);
 579                 return;
 580         case 1:
 581                 panning_link_direction_button.set_sensitive (false);
 582                 panning_link_button.set_sensitive (false);
 583                 break;
 584         default:
 585                 panning_link_direction_button.set_sensitive (true);
 586                 panning_link_button.set_sensitive (true);
 587         }
 588
 589         uint32_t nouts = _io->n_outputs().n_audio();
 590
 591         switch (nouts) {
 592         case 0:
 593         case 1:
 594                 /* relax */
 595                 break;
 596
 597         case 2:
 598                 /* bring pan bar state up to date */
 599                 update_pan_bars (false);
 600                 break;
 601
 602         default:
 603                 // panner->move_puck (pan_value (pans[0], pans[1]), 0.5);
 604                 break;
 605         }
 606 }
 607
 608 void
 609 PannerUI::pan_adjustment_changed (uint32_t which)
 610 {
 611         if (!in_pan_update && which < _io->panner().npanners()) {
 612
 613                 float xpos;
 614                 float val = pan_adjustments[which]->get_value ();
 615                 xpos = _io->panner().pan_control( which )->get_value();
 616
 617                 /* add a kinda-sorta detent for the middle */
 618
 619                 if (val != 0.5 && Panner::equivalent (val, 0.5)) {
 620                         /* this is going to be reentrant, so just
 621                            return after it.
 622                         */
 623
 624                         in_pan_update = true;
 625                         pan_adjustments[which]->set_value (0.5);
 626                         in_pan_update = false;
 627                         return;
 628                 }
 629
 630                 if (!Panner::equivalent (val, xpos)) {
 631
 632                         _io->panner().streampanner(which).set_position (val);
 633                         /* XXX
 634                            the panner objects have no access to the session,
 635                            so do this here. ick.
 636                         */
 637                         _session.set_dirty();
 638                 }
 639         }
 640 }
 641
 642 void
 643 PannerUI::pan_value_changed (uint32_t which)
 644 {
 645         ENSURE_GUI_THREAD (bind (mem_fun(*this, &PannerUI::pan_value_changed), which));
 646
 647         if (_io->n_outputs().n_audio() > 1 && which < _io->panner().npanners()) {
 648                 float xpos;
 649                 float val = pan_adjustments[which]->get_value ();
 650
 651                 _io->panner().streampanner(which).get_position (xpos);
 652
 653                 if (!Panner::equivalent (val, xpos)) {
 654                         in_pan_update = true;
 655                         pan_adjustments[which]->set_value (xpos);
 656                         in_pan_update = false;
 657                 }
 658         }
 659 }
 660
 661 void
 662 PannerUI::update_pan_bars (bool only_if_aplay)
 663 {
 664         uint32_t n;
 665         vector<Adjustment*>::iterator i;
 666
 667         in_pan_update = true;
 668
 669         /* this runs during automation playback, and moves the bar controllers
 670            and/or pucks around.
 671         */
 672
 673         for (i = pan_adjustments.begin(), n = 0; i != pan_adjustments.end(); ++i, ++n) {
 674                 float xpos, val;
 675
 676                 if (only_if_aplay) {
 677                         boost::shared_ptr<AutomationList> alist (_io->panner().streampanner(n).pan_control()->alist());
 678
 679                         if (!alist->automation_playback()) {
 680                                 continue;
 681                         }
 682                 }
 683
 684                 _io->panner().streampanner(n).get_effective_position (xpos);
 685                 val = (*i)->get_value ();
 686
 687                 if (!Panner::equivalent (val, xpos)) {
 688                         (*i)->set_value (xpos);
 689                 }
 690         }
 691
 692         in_pan_update = false;
 693 }
 694
 695 void
 696 PannerUI::pan_printer (char *buf, uint32_t len, Adjustment* adj)
 697 {
 698         float val = adj->get_value();
 699
 700         if (val == 0.0f) {
 701                 snprintf (buf, len, X_("L"));
 702         } else if (val == 1.0f) {
 703                 snprintf (buf, len, X_("R"));
 704         } else if (Panner::equivalent (val, 0.5f)) {
 705                 snprintf (buf, len, X_("C"));
 706         } else {
 707                 /* don't print anything */
 708                 buf[0] = '\0';
 709         }
 710 }
 711
 712 void
 713 PannerUI::update_pan_sensitive ()
 714 {
 715         bool sensitive = !(_io->panner().automation_state() & Play);
 716
 717         switch (_io->n_outputs().n_audio()) {
 718         case 0:
 719         case 1:
 720                 break;
 721         case 2:
 722                 for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 723                         (*i)->set_sensitive (sensitive);
 724                 }
 725                 break;
 726         default:
 727                 if (panner) {
 728                         panner->set_sensitive (sensitive);
 729                 }
 730                 if (big_window) {
 731                         big_window->set_sensitive (sensitive);
 732                 }
 733                 break;
 734         }
 735 }
 736
 737 gint
 738 PannerUI::pan_automation_state_button_event (GdkEventButton *ev)
 739 {
 740         using namespace Menu_Helpers;
 741
 742         if (ev->type == GDK_BUTTON_RELEASE) {
 743                 return TRUE;
 744         }
 745
 746         switch (ev->button) {
 747         case 1:
 748                 if (pan_astate_menu == 0) {
 749                         build_astate_menu ();
 750                 }
 751                 pan_astate_menu->popup (1, ev->time);
 752                 break;
 753         default:
 754                 break;
 755         }
 756
 757         return TRUE;
 758 }
 759
 760 gint
 761 PannerUI::pan_automation_style_button_event (GdkEventButton *ev)
 762 {
 763         if (ev->type == GDK_BUTTON_RELEASE) {
 764                 return TRUE;
 765         }
 766
 767         switch (ev->button) {
 768         case 1:
 769                 if (pan_astyle_menu == 0) {
 770                         build_astyle_menu ();
 771                 }
 772                 pan_astyle_menu->popup (1, ev->time);
 773                 break;
 774         default:
 775                 break;
 776         }
 777         return TRUE;
 778 }
 779
 780 void
 781 PannerUI::pan_automation_style_changed ()
 782 {
 783         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_style_changed));
 784
 785         switch (_width) {
 786         case Wide:
 787                 pan_automation_style_button.set_label (astyle_string(_io->panner().automation_style()));
 788                 break;
 789         case Narrow:
 790                 pan_automation_style_button.set_label (short_astyle_string(_io->panner().automation_style()));
 791                 break;
 792         }
 793 }
 794
 795 void
 796 PannerUI::pan_automation_state_changed ()
 797 {
 798         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_state_changed));
 799
 800         bool x;
 801
 802         switch (_width) {
 803         case Wide:
 804           pan_automation_state_button.set_label (astate_string(_io->panner().automation_state()));
 805                 break;
 806         case Narrow:
 807           pan_automation_state_button.set_label (short_astate_string(_io->panner().automation_state()));
 808                 break;
 809         }
 810
 811         /* when creating a new session, we get to create busses (and
 812            sometimes tracks) with no outputs by the time they get
 813            here.
 814         */
 815
 816         if (_io->panner().empty()) {
 817                 return;
 818         }
 819
 820         x = (_io->panner().streampanner(0).pan_control()->alist()->automation_state() != Off);
 821
 822         if (pan_automation_state_button.get_active() != x) {
 823         ignore_toggle = true;
 824                 pan_automation_state_button.set_active (x);
 825                 ignore_toggle = false;
 826         }
 827
 828         update_pan_sensitive ();
 829
 830         /* start watching automation so that things move */
 831
 832         pan_watching.disconnect();
 833
 834         if (x) {
 835                 pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &PannerUI::effective_pan_display));
 836         }
 837 }
 838
 839 string
 840 PannerUI::astate_string (AutoState state)
 841 {
 842         return _astate_string (state, false);
 843 }
 844
 845 string
 846 PannerUI::short_astate_string (AutoState state)
 847 {
 848         return _astate_string (state, true);
 849 }
 850
 851 string
 852 PannerUI::_astate_string (AutoState state, bool shrt)
 853 {
 854         string sstr;
 855
 856         switch (state) {
 857         case Off:
 858                 sstr = (shrt ? "M" : _("M"));
 859                 break;
 860         case Play:
 861                 sstr = (shrt ? "P" : _("P"));
 862                 break;
 863         case Touch:
 864                 sstr = (shrt ? "T" : _("T"));
 865                 break;
 866         case Write:
 867                 sstr = (shrt ? "W" : _("W"));
 868                 break;
 869         }
 870
 871         return sstr;
 872 }
 873
 874 string
 875 PannerUI::astyle_string (AutoStyle style)
 876 {
 877         return _astyle_string (style, false);
 878 }
 879
 880 string
 881 PannerUI::short_astyle_string (AutoStyle style)
 882 {
 883         return _astyle_string (style, true);
 884 }
 885
 886 string
 887 PannerUI::_astyle_string (AutoStyle style, bool shrt)
 888 {
 889         if (style & Trim) {
 890                 return _("Trim");
 891         } else {
 892                 /* XXX it might different in different languages */
 893
 894                 return (shrt ? _("Abs") : _("Abs"));
 895         }
 896 }