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 std;
  43 using namespace ARDOUR;
  44 using namespace PBD;
  45 using namespace Gtkmm2ext;
  46 using namespace Gtk;
  47 using namespace sigc;
  48
  49 const int PannerUI::pan_bar_height = 30;
  50
  51 PannerUI::PannerUI (Session& s)
  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         pan_astate_menu = 0;
  65         pan_astyle_menu = 0;
  66         in_pan_update = false;
  67
  68         pan_automation_style_button.set_name ("MixerAutomationModeButton");
  69         pan_automation_state_button.set_name ("MixerAutomationPlaybackButton");
  70
  71         ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_state_button, _("Pan automation mode"));
  72         ARDOUR_UI::instance()->tooltips().set_tip (pan_automation_style_button, _("Pan automation type"));
  73
  74         //set_size_request_to_display_given_text (pan_automation_state_button, X_("O"), 2, 2);
  75         //set_size_request_to_display_given_text (pan_automation_style_button, X_("0"), 2, 2);
  76
  77         pan_bar_packer.set_size_request (-1, 61);
  78         panning_viewport.set_size_request (-1, 61);
  79         panning_viewport.set_name (X_("BaseFrame"));
  80
  81         ARDOUR_UI::instance()->tooltips().set_tip (panning_link_button,
  82                                                    _("panning link control"));
  83         ARDOUR_UI::instance()->tooltips().set_tip (panning_link_direction_button,
  84                                                    _("panning link direction"));
  85
  86         pan_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
  87         pan_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
  88
  89         pan_automation_style_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_style_button_event), false);
  90         pan_automation_state_button.signal_button_press_event().connect (mem_fun(*this, &PannerUI::pan_automation_state_button_event), false);
  91
  92         panning_link_button.set_name (X_("PanningLinkButton"));
  93         panning_link_direction_button.set_name (X_("PanningLinkDirectionButton"));
  94
  95         panning_link_box.pack_start (panning_link_button, true, true);
  96         panning_link_box.pack_start (panning_link_direction_button, true, true);
  97         panning_link_box.pack_start (pan_automation_state_button, true, true);
  98
  99         /* the pixmap will be reset at some point, but the key thing is that
 100            we need a pixmap in the button just to get started.
 101         */
 102         panning_link_direction_button.add (*(manage (new Image (get_xpm("forwardblarrow.xpm")))));
 103
 104         panning_link_direction_button.signal_clicked().connect
 105                 (mem_fun(*this, &PannerUI::panning_link_direction_clicked));
 106
 107         panning_link_button.signal_button_press_event().connect
 108                 (mem_fun(*this, &PannerUI::panning_link_button_press), false);
 109         panning_link_button.signal_button_release_event().connect
 110                 (mem_fun(*this, &PannerUI::panning_link_button_release), false);
 111
 112         panning_up.set_border_width (3);
 113         panning_down.set_border_width (3);
 114         panning_up.add (panning_up_arrow);
 115         panning_down.add (panning_down_arrow);
 116         panning_up.set_name (X_("PanScrollerBase"));
 117         panning_down.set_name (X_("PanScrollerBase"));
 118         panning_up_arrow.set_name (X_("PanScrollerArrow"));
 119         panning_down_arrow.set_name (X_("PanScrollerArrow"));
 120
 121         pan_vbox.set_spacing (2);
 122         pan_vbox.pack_start (panning_viewport, Gtk::PACK_SHRINK);
 123         pan_vbox.pack_start (panning_link_box, Gtk::PACK_SHRINK);
 124
 125         pack_start (pan_vbox, true, true);
 126
 127         panner = 0;
 128         big_window = 0;
 129
 130         set_width(Narrow);
 131 }
 132
 133 void
 134 PannerUI::set_io (boost::shared_ptr<IO> io)
 135 {
 136         if (!io->panner()) {
 137                 cerr << "PannerUI::set_io IO has no panners" << endl;
 138                 return;
 139         }
 140
 141         connections.clear ();
 142
 143         delete pan_astyle_menu;
 144         pan_astyle_menu = 0;
 145
 146         delete pan_astate_menu;
 147         pan_astate_menu = 0;
 148
 149         _io = io;
 150
 151         connections.push_back (_io->panner()->Changed.connect (
 152                         mem_fun(*this, &PannerUI::panner_changed)));
 153         connections.push_back (_io->panner()->LinkStateChanged.connect (
 154                         mem_fun(*this, &PannerUI::update_pan_linkage)));
 155         connections.push_back (_io->panner()->StateChanged.connect (
 156                         mem_fun(*this, &PannerUI::update_pan_state)));
 157
 158         delete panner;
 159         panner = 0;
 160
 161         setup_pan ();
 162
 163         pan_changed (0);
 164         update_pan_sensitive ();
 165         update_pan_linkage ();
 166         pan_automation_state_changed ();
 167
 168 #if WHERE_DOES_THIS_LIVE
 169         pan_bar_packer.show();
 170         panning_viewport.show();
 171         panning_up.show();
 172         panning_up_arrow.show();
 173         panning_down.show();
 174         panning_down_arrow.show();
 175         pan_vbox.show();
 176         panning_link_button.show();
 177         panning_link_direction_button.show();
 178         panning_link_box.show();
 179         pan_automation_style_button.show();
 180         pan_automation_state_button.show();
 181         show();
 182 #endif
 183 }
 184
 185 void
 186 PannerUI::build_astate_menu ()
 187 {
 188         using namespace Menu_Helpers;
 189
 190         if (pan_astate_menu == 0) {
 191                 pan_astate_menu = new Menu;
 192                 pan_astate_menu->set_name ("ArdourContextMenu");
 193         } else {
 194                 pan_astate_menu->items().clear ();
 195         }
 196
 197         pan_astate_menu->items().push_back (MenuElem (_("Manual"), bind (
 198                         mem_fun (_io->panner().get(), &Panner::set_automation_state),
 199                         (AutoState) Off)));
 200         pan_astate_menu->items().push_back (MenuElem (_("Play"), bind (
 201                         mem_fun (_io->panner().get(), &Panner::set_automation_state),
 202                         (AutoState) Play)));
 203         pan_astate_menu->items().push_back (MenuElem (_("Write"), bind (
 204                         mem_fun (_io->panner().get(), &Panner::set_automation_state),
 205                         (AutoState) Write)));
 206         pan_astate_menu->items().push_back (MenuElem (_("Touch"), bind (
 207                         mem_fun (_io->panner().get(), &Panner::set_automation_state),
 208                         (AutoState) Touch)));
 209
 210 }
 211
 212 void
 213 PannerUI::build_astyle_menu ()
 214 {
 215         using namespace Menu_Helpers;
 216
 217         if (pan_astyle_menu == 0) {
 218                 pan_astyle_menu = new Menu;
 219                 pan_astyle_menu->set_name ("ArdourContextMenu");
 220         } else {
 221                 pan_astyle_menu->items().clear();
 222         }
 223
 224         pan_astyle_menu->items().push_back (MenuElem (_("Trim")));
 225         pan_astyle_menu->items().push_back (MenuElem (_("Abs")));
 226 }
 227
 228 boost::shared_ptr<PBD::Controllable>
 229 PannerUI::get_controllable()
 230 {
 231         return pan_bars[0]->get_controllable();
 232 }
 233
 234 bool
 235 PannerUI::panning_link_button_press (GdkEventButton* ev)
 236 {
 237         return true;
 238 }
 239
 240 bool
 241 PannerUI::panning_link_button_release (GdkEventButton* ev)
 242 {
 243         if (!ignore_toggle) {
 244                 _io->panner()->set_linked (!_io->panner()->linked());
 245         }
 246         return true;
 247 }
 248
 249 void
 250 PannerUI::panning_link_direction_clicked()
 251 {
 252         switch (_io->panner()->link_direction()) {
 253         case Panner::SameDirection:
 254                 _io->panner()->set_link_direction (Panner::OppositeDirection);
 255                 break;
 256         default:
 257                 _io->panner()->set_link_direction (Panner::SameDirection);
 258                 break;
 259         }
 260 }
 261
 262 void
 263 PannerUI::update_pan_linkage ()
 264 {
 265         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::update_pan_linkage));
 266
 267         bool x = _io->panner()->linked();
 268         bool bx = panning_link_button.get_active();
 269
 270         if (x != bx) {
 271
 272                 ignore_toggle = true;
 273                 panning_link_button.set_active (x);
 274                 ignore_toggle = false;
 275         }
 276
 277         panning_link_direction_button.set_sensitive (x);
 278
 279         switch (_io->panner()->link_direction()) {
 280         case Panner::SameDirection:
 281                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm ("forwardblarrow.xpm")))));
 282                 break;
 283         default:
 284                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm("revdblarrow.xpm")))));
 285                 break;
 286         }
 287 }
 288
 289 void
 290 PannerUI::set_width (Width w)
 291 {
 292         switch (w) {
 293         case Wide:
 294                 panning_link_button.set_label (_("link"));
 295                 break;
 296         case Narrow:
 297                 panning_link_button.set_label (_("L"));
 298                 break;
 299         }
 300
 301         _width = w;
 302 }
 303
 304
 305 PannerUI::~PannerUI ()
 306 {
 307         for (vector<Adjustment*>::iterator i = pan_adjustments.begin(); i != pan_adjustments.end(); ++i) {
 308                 delete (*i);
 309         }
 310
 311         for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 312                 delete (*i);
 313         }
 314
 315         delete panner;
 316         delete big_window;
 317         delete pan_menu;
 318         delete pan_astyle_menu;
 319         delete pan_astate_menu;
 320 }
 321
 322
 323 void
 324 PannerUI::panner_changed ()
 325 {
 326         ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::panner_changed));
 327         setup_pan ();
 328         pan_changed (0);
 329 }
 330
 331 void
 332 PannerUI::update_pan_state ()
 333 {
 334         /* currently nothing to do */
 335         // ENSURE_GUI_THREAD (mem_fun(*this, &PannerUI::update_panner_state));
 336 }
 337
 338 void
 339 PannerUI::setup_pan ()
 340 {
 341         if (!_io->panner()) {
 342                 return;
 343         }
 344
 345         uint32_t nouts = _io->n_outputs ().n_audio();
 346
 347         if (nouts == 0 || nouts == 1) {
 348
 349                 while (!pan_adjustments.empty()) {
 350                         delete pan_bars.back();
 351                         pan_bars.pop_back ();
 352                         delete pan_adjustments.back();
 353                         pan_adjustments.pop_back ();
 354                 }
 355
 356                 /* stick something into the panning viewport so that it redraws */
 357
 358                 EventBox* eb = manage (new EventBox());
 359                 panning_viewport.remove ();
 360                 panning_viewport.add (*eb);
 361                 panning_viewport.show_all ();
 362
 363         } else if (nouts == 2) {
 364
 365                 vector<Adjustment*>::size_type asz;
 366                 uint32_t npans = _io->panner()->npanners();
 367
 368                 while (!pan_adjustments.empty()) {
 369                         delete pan_bars.back();
 370                         pan_bars.pop_back ();
 371                         delete pan_adjustments.back();
 372                         pan_adjustments.pop_back ();
 373                 }
 374
 375                 while ((asz = pan_adjustments.size()) < npans) {
 376
 377                         float x, rx;
 378                         PannerBar* bc;
 379
 380                         /* initialize adjustment with 0.0 (L) or 1.0 (R) for the first and second panners,
 381                            which serves as a default, otherwise use current value */
 382
 383                         rx = _io->panner()->pan_control( asz)->get_value();
 384
 385                         if (npans == 1) {
 386                                 x = 0.5;
 387                         } else if (asz == 0) {
 388                                 x = 0.0;
 389                         } else if (asz == 1) {
 390                                 x = 1.0;
 391                         } else {
 392                                 x = rx;
 393                         }
 394
 395                         pan_adjustments.push_back (new Adjustment (x, 0, 1.0, 0.05, 0.1));
 396                         bc = new PannerBar (*pan_adjustments[asz],
 397                                 boost::static_pointer_cast<PBD::Controllable>( _io->panner()->pan_control( asz )) );
 398
 399                         /* now set adjustment with current value of panner, then connect the signals */
 400                         pan_adjustments.back()->set_value(rx);
 401                         pan_adjustments.back()->signal_value_changed().connect (bind (mem_fun(*this, &PannerUI::pan_adjustment_changed), (uint32_t) asz));
 402
 403                         _io->panner()->pan_control( asz )->Changed.connect (bind (mem_fun(*this, &PannerUI::pan_value_changed), (uint32_t) asz));
 404
 405
 406                         bc->set_name ("PanSlider");
 407                         bc->set_shadow_type (Gtk::SHADOW_NONE);
 408
 409                         bc->StartGesture.connect (bind (mem_fun (*_io, &IO::start_pan_touch), (uint32_t) asz));
 410                         bc->StopGesture.connect (bind (mem_fun (*_io, &IO::end_pan_touch), (uint32_t) asz));
 411
 412                         char buf[64];
 413                         snprintf (buf, sizeof (buf), _("panner for channel %zu"), asz + 1);
 414                         ARDOUR_UI::instance()->tooltips().set_tip (bc->event_widget(), buf);
 415
 416                         bc->event_widget().signal_button_release_event().connect
 417                                 (bind (mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) asz));
 418
 419                         bc->set_size_request (-1, pan_bar_height);
 420
 421                         pan_bars.push_back (bc);
 422                         pan_bar_packer.pack_start (*bc, false, false);
 423                 }
 424
 425                 /* now that we actually have the pan bars,
 426                    set their sensitivity based on current
 427                    automation state.
 428                 */
 429
 430                 update_pan_sensitive ();
 431
 432                 panning_viewport.remove ();
 433                 panning_viewport.add (pan_bar_packer);
 434                 panning_viewport.show_all ();
 435
 436         } else {
 437
 438                 if (!panner) {
 439                         panner = new Panner2d (_io->panner(), 61);
 440                         panner->set_name ("MixerPanZone");
 441                         panner->show ();
 442
 443                         panner->signal_button_press_event().connect
 444                                 (bind (mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) 0), false);
 445                 }
 446
 447                 update_pan_sensitive ();
 448                 panner->reset (_io->n_inputs().n_audio());
 449                 if (big_window) {
 450                         big_window->reset (_io->n_inputs().n_audio());
 451                 }
 452                 panner->set_size_request (-1, 61);
 453
 454                 /* and finally, add it to the panner frame */
 455
 456                 panning_viewport.remove ();
 457                 panning_viewport.add (*panner);
 458                 panning_viewport.show_all ();
 459         }
 460 }
 461
 462 bool
 463 PannerUI::pan_button_event (GdkEventButton* ev, uint32_t which)
 464 {
 465         switch (ev->button) {
 466         case 1:
 467                 if (panner && ev->type == GDK_2BUTTON_PRESS) {
 468                         if (!big_window) {
 469                                 big_window = new Panner2dWindow (panner->get_panner(), 400, _io->n_inputs().n_audio());
 470                         }
 471                         big_window->show ();
 472                         return true;
 473                 }
 474                 break;
 475
 476         case 3:
 477                 if (pan_menu == 0) {
 478                         pan_menu = manage (new Menu);
 479                         pan_menu->set_name ("ArdourContextMenu");
 480                 }
 481                 build_pan_menu (which);
 482                 pan_menu->popup (1, ev->time);
 483                 return true;
 484                 break;
 485         default:
 486                 return false;
 487         }
 488
 489         return false; // what's wrong with gcc?
 490 }
 491
 492 void
 493 PannerUI::build_pan_menu (uint32_t which)
 494 {
 495         using namespace Menu_Helpers;
 496         MenuList& items (pan_menu->items());
 497
 498         items.clear ();
 499
 500         items.push_back (CheckMenuElem (_("Mute")));
 501
 502         /* set state first, connect second */
 503
 504         (dynamic_cast<CheckMenuItem*> (&items.back()))->set_active (_io->panner()->streampanner(which).muted());
 505         (dynamic_cast<CheckMenuItem*> (&items.back()))->signal_toggled().connect
 506                 (bind (mem_fun(*this, &PannerUI::pan_mute), which));
 507
 508         items.push_back (CheckMenuElem (_("Bypass"), mem_fun(*this, &PannerUI::pan_bypass_toggle)));
 509         bypass_menu_item = static_cast<CheckMenuItem*> (&items.back());
 510
 511         /* set state first, connect second */
 512
 513         bypass_menu_item->set_active (_io->panner()->bypassed());
 514         bypass_menu_item->signal_toggled().connect (mem_fun(*this, &PannerUI::pan_bypass_toggle));
 515
 516         items.push_back (MenuElem (_("Reset"), bind (mem_fun (*this, &PannerUI::pan_reset), which)));
 517         items.push_back (SeparatorElem());
 518         items.push_back (MenuElem (_("Reset all"), mem_fun (*this, &PannerUI::pan_reset_all)));
 519 }
 520
 521 void
 522 PannerUI::pan_mute (uint32_t which)
 523 {
 524         StreamPanner& sp = _io->panner()->streampanner(which);
 525         sp.set_muted (!sp.muted());
 526 }
 527
 528 void
 529 PannerUI::pan_bypass_toggle ()
 530 {
 531         if (bypass_menu_item && (_io->panner()->bypassed() != bypass_menu_item->get_active())) {
 532                 _io->panner()->set_bypassed (!_io->panner()->bypassed());
 533         }
 534 }
 535
 536 void
 537 PannerUI::pan_reset (uint32_t which)
 538 {
 539         _io->panner()->reset_streampanner (which);
 540 }
 541
 542 void
 543 PannerUI::pan_reset_all ()
 544 {
 545         _io->panner()->reset_to_default ();
 546 }
 547
 548 void
 549 PannerUI::effective_pan_display ()
 550 {
 551         if (_io->panner()->empty()) {
 552                 return;
 553         }
 554
 555         switch (_io->n_outputs().n_audio()) {
 556         case 0:
 557         case 1:
 558                 /* relax */
 559                 break;
 560
 561         case 2:
 562                 update_pan_bars (true);
 563                 break;
 564
 565         default:
 566                 //panner->move_puck (pan_value (v, right), 0.5);
 567                 break;
 568         }
 569 }
 570
 571 void
 572 PannerUI::pan_changed (void *src)
 573 {
 574         if (src == this) {
 575                 return;
 576         }
 577
 578         switch (_io->panner()->npanners()) {
 579         case 0:
 580                 panning_link_direction_button.set_sensitive (false);
 581                 panning_link_button.set_sensitive (false);
 582                 return;
 583         case 1:
 584                 panning_link_direction_button.set_sensitive (false);
 585                 panning_link_button.set_sensitive (false);
 586                 break;
 587         default:
 588                 panning_link_direction_button.set_sensitive (true);
 589                 panning_link_button.set_sensitive (true);
 590         }
 591
 592         uint32_t nouts = _io->n_outputs().n_audio();
 593
 594         switch (nouts) {
 595         case 0:
 596         case 1:
 597                 /* relax */
 598                 break;
 599
 600         case 2:
 601                 /* bring pan bar state up to date */
 602                 update_pan_bars (false);
 603                 break;
 604
 605         default:
 606                 // panner->move_puck (pan_value (pans[0], pans[1]), 0.5);
 607                 break;
 608         }
 609 }
 610
 611 void
 612 PannerUI::pan_adjustment_changed (uint32_t which)
 613 {
 614         if (!in_pan_update && which < _io->panner()->npanners()) {
 615
 616                 float xpos;
 617                 float val = pan_adjustments[which]->get_value ();
 618                 xpos = _io->panner()->pan_control( which )->get_value();
 619
 620                 /* add a kinda-sorta detent for the middle */
 621
 622                 if (val != 0.5 && Panner::equivalent (val, 0.5)) {
 623                         /* this is going to be reentrant, so just
 624                            return after it.
 625                         */
 626
 627                         in_pan_update = true;
 628                         pan_adjustments[which]->set_value (0.5);
 629                         in_pan_update = false;
 630                         return;
 631                 }
 632
 633                 if (!Panner::equivalent (val, xpos)) {
 634
 635                         _io->panner()->streampanner(which).set_position (val);
 636                         /* XXX
 637                            the panner objects have no access to the session,
 638                            so do this here. ick.
 639                         */
 640                         _session.set_dirty();
 641                 }
 642         }
 643 }
 644
 645 void
 646 PannerUI::pan_value_changed (uint32_t which)
 647 {
 648         ENSURE_GUI_THREAD (bind (mem_fun(*this, &PannerUI::pan_value_changed), which));
 649
 650         if (_io->n_outputs().n_audio() > 1 && which < _io->panner()->npanners()) {
 651                 float xpos;
 652                 float val = pan_adjustments[which]->get_value ();
 653
 654                 _io->panner()->streampanner(which).get_position (xpos);
 655
 656                 if (!Panner::equivalent (val, xpos)) {
 657                         in_pan_update = true;
 658                         pan_adjustments[which]->set_value (xpos);
 659                         in_pan_update = false;
 660                 }
 661         }
 662 }
 663
 664 void
 665 PannerUI::update_pan_bars (bool only_if_aplay)
 666 {
 667         uint32_t n;
 668         vector<Adjustment*>::iterator i;
 669
 670         in_pan_update = true;
 671
 672         /* this runs during automation playback, and moves the bar controllers
 673            and/or pucks around.
 674         */
 675
 676         for (i = pan_adjustments.begin(), n = 0; i != pan_adjustments.end(); ++i, ++n) {
 677                 float xpos, val;
 678
 679                 if (only_if_aplay) {
 680                         boost::shared_ptr<AutomationList> alist (_io->panner()->streampanner(n).pan_control()->alist());
 681
 682                         if (!alist->automation_playback()) {
 683                                 continue;
 684                         }
 685                 }
 686
 687                 _io->panner()->streampanner(n).get_effective_position (xpos);
 688                 val = (*i)->get_value ();
 689
 690                 if (!Panner::equivalent (val, xpos)) {
 691                         (*i)->set_value (xpos);
 692                 }
 693         }
 694
 695         in_pan_update = false;
 696 }
 697
 698 void
 699 PannerUI::pan_printer (char *buf, uint32_t len, Adjustment* adj)
 700 {
 701         float val = adj->get_value();
 702
 703         if (val == 0.0f) {
 704                 snprintf (buf, len, X_("L"));
 705         } else if (val == 1.0f) {
 706                 snprintf (buf, len, X_("R"));
 707         } else if (Panner::equivalent (val, 0.5f)) {
 708                 snprintf (buf, len, X_("C"));
 709         } else {
 710                 /* don't print anything */
 711                 buf[0] = '\0';
 712         }
 713 }
 714
 715 void
 716 PannerUI::update_pan_sensitive ()
 717 {
 718         bool sensitive = !(_io->panner()->automation_state() & Play);
 719
 720         switch (_io->n_outputs().n_audio()) {
 721         case 0:
 722         case 1:
 723                 break;
 724         case 2:
 725                 for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 726                         (*i)->set_sensitive (sensitive);
 727                 }
 728                 break;
 729         default:
 730                 if (panner) {
 731                         panner->set_sensitive (sensitive);
 732                 }
 733                 if (big_window) {
 734                         big_window->set_sensitive (sensitive);
 735                 }
 736                 break;
 737         }
 738 }
 739
 740 gint
 741 PannerUI::pan_automation_state_button_event (GdkEventButton *ev)
 742 {
 743         using namespace Menu_Helpers;
 744
 745         if (ev->type == GDK_BUTTON_RELEASE) {
 746                 return TRUE;
 747         }
 748
 749         switch (ev->button) {
 750         case 1:
 751                 if (pan_astate_menu == 0) {
 752                         build_astate_menu ();
 753                 }
 754                 pan_astate_menu->popup (1, ev->time);
 755                 break;
 756         default:
 757                 break;
 758         }
 759
 760         return TRUE;
 761 }
 762
 763 gint
 764 PannerUI::pan_automation_style_button_event (GdkEventButton *ev)
 765 {
 766         if (ev->type == GDK_BUTTON_RELEASE) {
 767                 return TRUE;
 768         }
 769
 770         switch (ev->button) {
 771         case 1:
 772                 if (pan_astyle_menu == 0) {
 773                         build_astyle_menu ();
 774                 }
 775                 pan_astyle_menu->popup (1, ev->time);
 776                 break;
 777         default:
 778                 break;
 779         }
 780         return TRUE;
 781 }
 782
 783 void
 784 PannerUI::pan_automation_style_changed ()
 785 {
 786         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_style_changed));
 787
 788         switch (_width) {
 789         case Wide:
 790                 pan_automation_style_button.set_label (astyle_string(_io->panner()->automation_style()));
 791                 break;
 792         case Narrow:
 793                 pan_automation_style_button.set_label (short_astyle_string(_io->panner()->automation_style()));
 794                 break;
 795         }
 796 }
 797
 798 void
 799 PannerUI::pan_automation_state_changed ()
 800 {
 801         ENSURE_GUI_THREAD(mem_fun(*this, &PannerUI::pan_automation_state_changed));
 802
 803         bool x;
 804
 805         switch (_width) {
 806         case Wide:
 807           pan_automation_state_button.set_label (astate_string(_io->panner()->automation_state()));
 808                 break;
 809         case Narrow:
 810           pan_automation_state_button.set_label (short_astate_string(_io->panner()->automation_state()));
 811                 break;
 812         }
 813
 814         /* when creating a new session, we get to create busses (and
 815            sometimes tracks) with no outputs by the time they get
 816            here.
 817         */
 818
 819         if (_io->panner()->empty()) {
 820                 return;
 821         }
 822
 823         x = (_io->panner()->streampanner(0).pan_control()->alist()->automation_state() != Off);
 824
 825         if (pan_automation_state_button.get_active() != x) {
 826         ignore_toggle = true;
 827                 pan_automation_state_button.set_active (x);
 828                 ignore_toggle = false;
 829         }
 830
 831         update_pan_sensitive ();
 832
 833         /* start watching automation so that things move */
 834
 835         pan_watching.disconnect();
 836
 837         if (x) {
 838                 pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (mem_fun (*this, &PannerUI::effective_pan_display));
 839         }
 840 }
 841
 842 string
 843 PannerUI::astate_string (AutoState state)
 844 {
 845         return _astate_string (state, false);
 846 }
 847
 848 string
 849 PannerUI::short_astate_string (AutoState state)
 850 {
 851         return _astate_string (state, true);
 852 }
 853
 854 string
 855 PannerUI::_astate_string (AutoState state, bool shrt)
 856 {
 857         string sstr;
 858
 859         switch (state) {
 860         case Off:
 861                 sstr = (shrt ? "M" : _("M"));
 862                 break;
 863         case Play:
 864                 sstr = (shrt ? "P" : _("P"));
 865                 break;
 866         case Touch:
 867                 sstr = (shrt ? "T" : _("T"));
 868                 break;
 869         case Write:
 870                 sstr = (shrt ? "W" : _("W"));
 871                 break;
 872         }
 873
 874         return sstr;
 875 }
 876
 877 string
 878 PannerUI::astyle_string (AutoStyle style)
 879 {
 880         return _astyle_string (style, false);
 881 }
 882
 883 string
 884 PannerUI::short_astyle_string (AutoStyle style)
 885 {
 886         return _astyle_string (style, true);
 887 }
 888
 889 string
 890 PannerUI::_astyle_string (AutoStyle style, bool shrt)
 891 {
 892         if (style & Trim) {
 893                 return _("Trim");
 894         } else {
 895                 /* XXX it might different in different languages */
 896
 897                 return (shrt ? _("Abs") : _("Abs"));
 898         }
 899 }