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/barcontroller.h>
  25 #include "midi++/manager.h"
  26 #include "pbd/fastlog.h"
  27
  28 #include "ardour_ui.h"
  29 #include "panner_ui.h"
  30 #include "panner2d.h"
  31 #include "utils.h"
  32 #include "panner.h"
  33 #include "gui_thread.h"
  34 #include "stereo_panner.h"
  35
  36 #include "ardour/delivery.h"
  37 #include "ardour/session.h"
  38 #include "ardour/panner.h"
  39 #include "ardour/route.h"
  40
  41 #include "i18n.h"
  42
  43 using namespace std;
  44 using namespace ARDOUR;
  45 using namespace PBD;
  46 using namespace Gtkmm2ext;
  47 using namespace Gtk;
  48
  49 const int PannerUI::pan_bar_height = 20;
  50
  51 PannerUI::PannerUI (Session* s)
  52         : _current_nouts (-1)
  53         , _current_npans (-1)
  54         , hAdjustment(0.0, 0.0, 0.0)
  55         , vAdjustment(0.0, 0.0, 0.0)
  56         , panning_viewport(hAdjustment, vAdjustment)
  57         , panning_up_arrow (Gtk::ARROW_UP, Gtk::SHADOW_OUT)
  58         , panning_down_arrow (Gtk::ARROW_DOWN, Gtk::SHADOW_OUT)
  59         , panning_link_button (_("link"))
  60         , pan_automation_style_button ("")
  61         , pan_automation_state_button ("")
  62         , _bar_spinner_active (false)
  63 {
  64         set_session (s);
  65
  66         ignore_toggle = false;
  67         pan_menu = 0;
  68         pan_astate_menu = 0;
  69         pan_astyle_menu = 0;
  70         in_pan_update = false;
  71         _stereo_panner = 0;
  72         _ignore_width_change = false;
  73         _ignore_position_change = false;
  74
  75         pan_automation_style_button.set_name ("MixerAutomationModeButton");
  76         pan_automation_state_button.set_name ("MixerAutomationPlaybackButton");
  77
  78         ARDOUR_UI::instance()->set_tip (pan_automation_state_button, _("Pan automation mode"));
  79         ARDOUR_UI::instance()->set_tip (pan_automation_style_button, _("Pan automation type"));
  80
  81         //set_size_request_to_display_given_text (pan_automation_state_button, X_("O"), 2, 2);
  82         //set_size_request_to_display_given_text (pan_automation_style_button, X_("0"), 2, 2);
  83
  84         panning_viewport.set_name (X_("BaseFrame"));
  85
  86         ARDOUR_UI::instance()->set_tip (panning_link_button,
  87                                                    _("panning link control"));
  88         ARDOUR_UI::instance()->set_tip (panning_link_direction_button,
  89                                                    _("panning link direction"));
  90
  91         pan_automation_style_button.unset_flags (Gtk::CAN_FOCUS);
  92         pan_automation_state_button.unset_flags (Gtk::CAN_FOCUS);
  93
  94         pan_automation_style_button.signal_button_press_event().connect (sigc::mem_fun(*this, &PannerUI::pan_automation_style_button_event), false);
  95         pan_automation_state_button.signal_button_press_event().connect (sigc::mem_fun(*this, &PannerUI::pan_automation_state_button_event), false);
  96
  97         panning_link_button.set_name (X_("PanningLinkButton"));
  98         panning_link_direction_button.set_name (X_("PanningLinkDirectionButton"));
  99
 100         panning_link_box.pack_start (panning_link_button, true, true);
 101         panning_link_box.pack_start (panning_link_direction_button, true, true);
 102         panning_link_box.pack_start (pan_automation_state_button, true, true);
 103
 104         /* the pixmap will be reset at some point, but the key thing is that
 105            we need a pixmap in the button just to get started.
 106         */
 107         panning_link_direction_button.add (*(manage (new Image (get_xpm("forwardblarrow.xpm")))));
 108
 109         panning_link_direction_button.signal_clicked().connect
 110                 (sigc::mem_fun(*this, &PannerUI::panning_link_direction_clicked));
 111
 112         panning_link_button.signal_button_press_event().connect
 113                 (sigc::mem_fun(*this, &PannerUI::panning_link_button_press), false);
 114         panning_link_button.signal_button_release_event().connect
 115                 (sigc::mem_fun(*this, &PannerUI::panning_link_button_release), false);
 116
 117         panning_up.set_border_width (3);
 118         panning_down.set_border_width (3);
 119         panning_up.add (panning_up_arrow);
 120         panning_down.add (panning_down_arrow);
 121         panning_up.set_name (X_("PanScrollerBase"));
 122         panning_down.set_name (X_("PanScrollerBase"));
 123         panning_up_arrow.set_name (X_("PanScrollerArrow"));
 124         panning_down_arrow.set_name (X_("PanScrollerArrow"));
 125
 126         pan_vbox.set_spacing (2);
 127         pan_vbox.pack_start (panning_viewport, Gtk::PACK_SHRINK);
 128         pan_vbox.pack_start (panning_link_box, Gtk::PACK_SHRINK);
 129
 130         pack_start (pan_vbox, true, true);
 131
 132         twod_panner = 0;
 133         big_window = 0;
 134
 135         set_width(Narrow);
 136 }
 137
 138 void
 139 PannerUI::set_panner (boost::shared_ptr<Panner> p)
 140 {
 141         connections.drop_connections ();
 142
 143         delete pan_astyle_menu;
 144         pan_astyle_menu = 0;
 145
 146         delete pan_astate_menu;
 147         pan_astate_menu = 0;
 148
 149         _panner = p;
 150
 151         delete twod_panner;
 152         twod_panner = 0;
 153
 154         if (!_panner) {
 155                 return;
 156         }
 157
 158         _panner->Changed.connect (connections, invalidator (*this), boost::bind (&PannerUI::panner_changed, this, this), gui_context());
 159         _panner->LinkStateChanged.connect (connections, invalidator (*this), boost::bind (&PannerUI::update_pan_linkage, this), gui_context());
 160         _panner->StateChanged.connect (connections, invalidator (*this), boost::bind (&PannerUI::update_pan_state, this), gui_context());
 161
 162         panner_changed (0);
 163         update_pan_sensitive ();
 164         update_pan_linkage ();
 165         pan_automation_state_changed ();
 166 }
 167
 168 void
 169 PannerUI::build_astate_menu ()
 170 {
 171         using namespace Menu_Helpers;
 172
 173         if (pan_astate_menu == 0) {
 174                 pan_astate_menu = new Menu;
 175                 pan_astate_menu->set_name ("ArdourContextMenu");
 176         } else {
 177                 pan_astate_menu->items().clear ();
 178         }
 179
 180         pan_astate_menu->items().push_back (MenuElem (_("Manual"), sigc::bind (
 181                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 182                         (AutoState) Off)));
 183         pan_astate_menu->items().push_back (MenuElem (_("Play"), sigc::bind (
 184                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 185                         (AutoState) Play)));
 186         pan_astate_menu->items().push_back (MenuElem (_("Write"), sigc::bind (
 187                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 188                         (AutoState) Write)));
 189         pan_astate_menu->items().push_back (MenuElem (_("Touch"), sigc::bind (
 190                         sigc::mem_fun (_panner.get(), &Panner::set_automation_state),
 191                         (AutoState) Touch)));
 192
 193 }
 194
 195 void
 196 PannerUI::build_astyle_menu ()
 197 {
 198         using namespace Menu_Helpers;
 199
 200         if (pan_astyle_menu == 0) {
 201                 pan_astyle_menu = new Menu;
 202                 pan_astyle_menu->set_name ("ArdourContextMenu");
 203         } else {
 204                 pan_astyle_menu->items().clear();
 205         }
 206
 207         pan_astyle_menu->items().push_back (MenuElem (_("Trim")));
 208         pan_astyle_menu->items().push_back (MenuElem (_("Abs")));
 209 }
 210
 211 boost::shared_ptr<PBD::Controllable>
 212 PannerUI::get_controllable()
 213 {
 214         return pan_bars[0]->get_controllable();
 215 }
 216
 217 bool
 218 PannerUI::panning_link_button_press (GdkEventButton*)
 219 {
 220         return true;
 221 }
 222
 223 bool
 224 PannerUI::panning_link_button_release (GdkEventButton*)
 225 {
 226         if (!ignore_toggle) {
 227                 _panner->set_linked (!_panner->linked());
 228         }
 229         return true;
 230 }
 231
 232 void
 233 PannerUI::panning_link_direction_clicked()
 234 {
 235         switch (_panner->link_direction()) {
 236         case Panner::SameDirection:
 237                 _panner->set_link_direction (Panner::OppositeDirection);
 238                 break;
 239         default:
 240                 _panner->set_link_direction (Panner::SameDirection);
 241                 break;
 242         }
 243 }
 244
 245 void
 246 PannerUI::update_pan_linkage ()
 247 {
 248         ENSURE_GUI_THREAD (*this, &PannerUI::update_pan_linkage)
 249
 250         bool const x = _panner->linked();
 251         bool const bx = panning_link_button.get_active();
 252
 253         if (x != bx) {
 254
 255                 ignore_toggle = true;
 256                 panning_link_button.set_active (x);
 257                 ignore_toggle = false;
 258         }
 259
 260         panning_link_direction_button.set_sensitive (x);
 261
 262         switch (_panner->link_direction()) {
 263         case Panner::SameDirection:
 264                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm ("forwardblarrow.xpm")))));
 265                 break;
 266         default:
 267                 panning_link_direction_button.set_image (*(manage (new Image (get_xpm("revdblarrow.xpm")))));
 268                 break;
 269         }
 270 }
 271
 272 void
 273 PannerUI::on_size_allocate (Allocation& a)
 274 {
 275         HBox::on_size_allocate (a);
 276 }
 277
 278 void
 279 PannerUI::set_width (Width w)
 280 {
 281         switch (w) {
 282         case Wide:
 283                 panning_link_button.set_label (_("link"));
 284                 break;
 285         case Narrow:
 286                 panning_link_button.set_label (_("L"));
 287                 break;
 288         }
 289
 290         _width = w;
 291 }
 292
 293
 294 PannerUI::~PannerUI ()
 295 {
 296         for (vector<Adjustment*>::iterator i = pan_adjustments.begin(); i != pan_adjustments.end(); ++i) {
 297                 delete (*i);
 298         }
 299
 300         for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 301                 delete (*i);
 302         }
 303
 304         delete twod_panner;
 305         delete big_window;
 306         delete pan_menu;
 307         delete pan_astyle_menu;
 308         delete pan_astate_menu;
 309         delete _stereo_panner;
 310 }
 311
 312
 313 void
 314 PannerUI::panner_changed (void* src)
 315 {
 316         ENSURE_GUI_THREAD (*this, &PannerUI::panner_changed)
 317
 318         setup_pan ();
 319
 320         if (src == this) {
 321                 return;
 322         }
 323
 324         switch (_panner->npanners()) {
 325         case 0:
 326                 panning_link_direction_button.set_sensitive (false);
 327                 panning_link_button.set_sensitive (false);
 328                 return;
 329         case 1:
 330                 panning_link_direction_button.set_sensitive (false);
 331                 panning_link_button.set_sensitive (false);
 332                 break;
 333         default:
 334                 panning_link_direction_button.set_sensitive (_panner->linked ());
 335                 panning_link_button.set_sensitive (true);
 336         }
 337
 338         uint32_t const nouts = _panner->nouts();
 339
 340         switch (nouts) {
 341         case 0:
 342         case 1:
 343                 /* relax */
 344                 break;
 345
 346         case 2:
 347                 /* bring pan bar state up to date */
 348                 update_pan_bars (false);
 349                 break;
 350
 351         default:
 352                 // panner->move_puck (pan_value (pans[0], pans[1]), 0.5);
 353                 break;
 354         }
 355 }
 356
 357 void
 358 PannerUI::update_pan_state ()
 359 {
 360         /* currently nothing to do */
 361         // ENSURE_GUI_THREAD (*this, &PannerUI::update_panner_state)
 362 }
 363
 364 void
 365 PannerUI::setup_pan ()
 366 {
 367         if (!_panner) {
 368                 return;
 369         }
 370
 371         uint32_t const nouts = _panner->nouts();
 372         uint32_t const npans = _panner->npanners();
 373
 374         if (int32_t (nouts) == _current_nouts && int32_t (npans) == _current_npans) {
 375                 return;
 376         }
 377
 378         _pan_control_connections.drop_connections ();
 379         for (uint32_t i = 0; i < _panner->npanners(); ++i) {
 380                 connect_to_pan_control (i);
 381         }
 382
 383         _current_nouts = nouts;
 384         _current_npans = npans;
 385
 386         if (nouts == 0 || nouts == 1) {
 387
 388                 while (!pan_adjustments.empty()) {
 389                         delete pan_bars.back();
 390                         pan_bars.pop_back ();
 391                         delete pan_adjustments.back();
 392                         pan_adjustments.pop_back ();
 393                 }
 394
 395                 delete twod_panner;
 396                 twod_panner = 0;
 397
 398                 /* stick something into the panning viewport so that it redraws */
 399
 400                 EventBox* eb = manage (new EventBox());
 401                 panning_viewport.remove ();
 402                 panning_viewport.add (*eb);
 403                 panning_viewport.show_all ();
 404
 405         } else if (nouts == 2) {
 406
 407                 vector<Adjustment*>::size_type asz;
 408
 409                 while (!pan_adjustments.empty()) {
 410                         delete pan_bars.back();
 411                         pan_bars.pop_back ();
 412                         delete pan_adjustments.back();
 413                         pan_adjustments.pop_back ();
 414                 }
 415
 416                 delete twod_panner;
 417                 twod_panner = 0;
 418
 419                 while ((asz = pan_adjustments.size()) < npans) {
 420
 421                         float x, rx;
 422                         PannerBar* bc;
 423
 424                         /* initialize adjustment with 0.0 (L) or 1.0 (R) for the first and second panners,
 425                            which serves as a default, otherwise use current value */
 426
 427                         rx = _panner->pan_control( asz)->get_value();
 428
 429                         if (npans == 1) {
 430                                 x = 0.5;
 431                         } else if (asz == 0) {
 432                                 x = 0.0;
 433                         } else if (asz == 1) {
 434                                 x = 1.0;
 435                         } else {
 436                                 x = rx;
 437                         }
 438
 439                         pan_adjustments.push_back (new Adjustment (x, 0, 1.0, 0.005, 0.05));
 440                         bc = new PannerBar (*pan_adjustments[asz],
 441                                 boost::static_pointer_cast<PBD::Controllable>( _panner->pan_control( asz )) );
 442
 443                         /* now set adjustment with current value of panner, then connect the signals */
 444                         pan_adjustments.back()->set_value(rx);
 445                         pan_adjustments.back()->signal_value_changed().connect (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_adjustment_changed), (uint32_t) asz));
 446                         connect_to_pan_control (asz);
 447
 448                         bc->set_name ("PanSlider");
 449                         bc->set_shadow_type (Gtk::SHADOW_NONE);
 450
 451                         boost::shared_ptr<AutomationControl> ac = _panner->pan_control (asz);
 452
 453                         if (asz) {
 454                                 bc->StartGesture.connect (sigc::bind (sigc::mem_fun (*this, &PannerUI::start_touch),
 455                                                                       boost::weak_ptr<AutomationControl> (ac)));
 456                                 bc->StopGesture.connect (sigc::bind (sigc::mem_fun (*this, &PannerUI::stop_touch),
 457                                                                      boost::weak_ptr<AutomationControl>(ac)));
 458                         }
 459
 460                         char buf[64];
 461                         snprintf (buf, sizeof (buf), _("panner for channel %zu"), asz + 1);
 462                         ARDOUR_UI::instance()->set_tip (bc->event_widget(), buf);
 463
 464                         bc->event_widget().signal_button_release_event().connect
 465                                 (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) asz));
 466
 467                         bc->set_size_request (-1, pan_bar_height);
 468                         bc->SpinnerActive.connect (sigc::mem_fun (*this, &PannerUI::bar_spinner_activate));
 469
 470                         pan_bars.push_back (bc);
 471                         pan_bar_packer.pack_start (*bc, false, false);
 472                 }
 473
 474                 /* now that we actually have the pan bars,
 475                    set their sensitivity based on current
 476                    automation state.
 477                 */
 478
 479                 update_pan_sensitive ();
 480
 481                 panning_viewport.remove ();
 482                 panning_viewport.add (pan_bar_packer);
 483                 panning_viewport.show_all ();
 484
 485                 if (npans == 2) {
 486                         /* add position and width controls */
 487                         if (_stereo_panner == 0) {
 488                                 _stereo_panner = new StereoPanner (_panner->direction_control(),
 489                                                                    _panner->width_control());
 490                                 poswidth_box.pack_start (*_stereo_panner, true, true);
 491                         }
 492                         pan_vbox.pack_start (poswidth_box, false, false);
 493                         poswidth_box.show_all ();
 494                         cerr << "Packed poswidth and mde it visible\n";
 495                 } else {
 496                         if (_stereo_panner) {
 497                                 pan_vbox.remove (poswidth_box);
 498                                 cerr << "Hid poswidth\n";
 499                         }
 500                 }
 501
 502         } else {
 503
 504                 if (!twod_panner) {
 505                         twod_panner = new Panner2d (_panner, 61);
 506                         twod_panner->set_name ("MixerPanZone");
 507                         twod_panner->show ();
 508
 509                         twod_panner->signal_button_press_event().connect
 510                                 (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_button_event), (uint32_t) 0), false);
 511                 }
 512
 513                 update_pan_sensitive ();
 514                 twod_panner->reset (npans);
 515                 if (big_window) {
 516                         big_window->reset (npans);
 517                 }
 518                 twod_panner->set_size_request (-1, 61);
 519
 520                 /* and finally, add it to the panner frame */
 521
 522                 panning_viewport.remove ();
 523                 panning_viewport.add (*twod_panner);
 524                 panning_viewport.show_all ();
 525         }
 526 }
 527
 528 void
 529 PannerUI::start_touch (boost::weak_ptr<AutomationControl> wac)
 530 {
 531         boost::shared_ptr<AutomationControl> ac = wac.lock();
 532         if (!ac) {
 533                 return;
 534         }
 535         ac->start_touch (ac->session().transport_frame());
 536 }
 537
 538 void
 539 PannerUI::stop_touch (boost::weak_ptr<AutomationControl> wac)
 540 {
 541         boost::shared_ptr<AutomationControl> ac = wac.lock();
 542         if (!ac) {
 543                 return;
 544         }
 545         ac->stop_touch (false, ac->session().transport_frame());
 546 }
 547
 548 bool
 549 PannerUI::pan_button_event (GdkEventButton* ev, uint32_t which)
 550 {
 551         switch (ev->button) {
 552         case 1:
 553                 if (twod_panner && ev->type == GDK_2BUTTON_PRESS) {
 554                         if (!big_window) {
 555                                 big_window = new Panner2dWindow (_panner, 400, _panner->npanners());
 556                         }
 557                         big_window->show ();
 558                         return true;
 559                 }
 560                 break;
 561
 562         case 3:
 563                 if (pan_menu == 0) {
 564                         pan_menu = manage (new Menu);
 565                         pan_menu->set_name ("ArdourContextMenu");
 566                 }
 567                 build_pan_menu (which);
 568                 pan_menu->popup (1, ev->time);
 569                 return true;
 570                 break;
 571         default:
 572                 return false;
 573         }
 574
 575         return false; // what's wrong with gcc?
 576 }
 577
 578 void
 579 PannerUI::build_pan_menu (uint32_t which)
 580 {
 581         using namespace Menu_Helpers;
 582         MenuList& items (pan_menu->items());
 583
 584         items.clear ();
 585
 586         items.push_back (CheckMenuElem (_("Mute")));
 587
 588         /* set state first, connect second */
 589
 590         (dynamic_cast<CheckMenuItem*> (&items.back()))->set_active (_panner->streampanner(which).muted());
 591         (dynamic_cast<CheckMenuItem*> (&items.back()))->signal_toggled().connect
 592                 (sigc::bind (sigc::mem_fun(*this, &PannerUI::pan_mute), which));
 593
 594         items.push_back (CheckMenuElem (_("Bypass"), sigc::mem_fun(*this, &PannerUI::pan_bypass_toggle)));
 595         bypass_menu_item = static_cast<CheckMenuItem*> (&items.back());
 596
 597         /* set state first, connect second */
 598
 599         bypass_menu_item->set_active (_panner->bypassed());
 600         bypass_menu_item->signal_toggled().connect (sigc::mem_fun(*this, &PannerUI::pan_bypass_toggle));
 601
 602         items.push_back (MenuElem (_("Reset"), sigc::bind (sigc::mem_fun (*this, &PannerUI::pan_reset), which)));
 603         items.push_back (SeparatorElem());
 604         items.push_back (MenuElem (_("Reset all"), sigc::mem_fun (*this, &PannerUI::pan_reset_all)));
 605 }
 606
 607 void
 608 PannerUI::pan_mute (uint32_t which)
 609 {
 610         StreamPanner& sp = _panner->streampanner(which);
 611         sp.set_muted (!sp.muted());
 612 }
 613
 614 void
 615 PannerUI::pan_bypass_toggle ()
 616 {
 617         if (bypass_menu_item && (_panner->bypassed() != bypass_menu_item->get_active())) {
 618                 _panner->set_bypassed (!_panner->bypassed());
 619         }
 620 }
 621
 622 void
 623 PannerUI::pan_reset (uint32_t which)
 624 {
 625         _panner->reset_streampanner (which);
 626 }
 627
 628 void
 629 PannerUI::pan_reset_all ()
 630 {
 631         _panner->reset_to_default ();
 632 }
 633
 634 void
 635 PannerUI::effective_pan_display ()
 636 {
 637         if (_panner->empty()) {
 638                 return;
 639         }
 640
 641         switch (_panner->nouts()) {
 642         case 0:
 643         case 1:
 644                 /* relax */
 645                 break;
 646
 647         case 2:
 648                 update_pan_bars (true);
 649                 break;
 650
 651         default:
 652                 //panner->move_puck (pan_value (v, right), 0.5);
 653                 break;
 654         }
 655 }
 656
 657 void
 658 PannerUI::pan_adjustment_changed (uint32_t which)
 659 {
 660         if (!in_pan_update && which < _panner->npanners()) {
 661
 662                 float val = pan_adjustments[which]->get_value ();
 663                 float const xpos = _panner->pan_control(which)->get_value();
 664
 665                 /* add a kinda-sorta detent for the middle */
 666
 667                 if (val != 0.5 && Panner::equivalent (val, 0.5)) {
 668                         /* this is going to be reentrant, so just
 669                            return after it.
 670                         */
 671
 672                         in_pan_update = true;
 673                         pan_adjustments[which]->set_value (0.5);
 674                         in_pan_update = false;
 675                         return;
 676                 }
 677
 678                 if (!Panner::equivalent (val, xpos)) {
 679
 680                         _panner->pan_control(which)->set_value (val);
 681                         /* XXX
 682                            the panner objects have no access to the session,
 683                            so do this here. ick.
 684                         */
 685                         _session->set_dirty();
 686                 }
 687         }
 688 }
 689
 690 void
 691 PannerUI::pan_value_changed (uint32_t which)
 692 {
 693         ENSURE_GUI_THREAD (*this, &PannerUI::pan_value_changed, which)
 694
 695         if (twod_panner) {
 696
 697                 in_pan_update = true;
 698                 twod_panner->move_puck (which, _panner->streampanner(which).get_position());
 699                 in_pan_update = false;
 700
 701         } else if (_panner->npanners() > 0 && which < _panner->npanners()) {
 702                 AngularVector model = _panner->streampanner(which).get_position();
 703                 double fract = pan_adjustments[which]->get_value();
 704                 AngularVector view (BaseStereoPanner::lr_fract_to_azimuth (fract), 0.0);
 705
 706                 if (!Panner::equivalent (model, view)) {
 707                         in_pan_update = true;
 708                         pan_adjustments[which]->set_value (BaseStereoPanner::azimuth_to_lr_fract (model.azi));
 709                         in_pan_update = false;
 710                 }
 711         }
 712 }
 713
 714 void
 715 PannerUI::update_pan_bars (bool only_if_aplay)
 716 {
 717         uint32_t n;
 718         vector<Adjustment*>::iterator i;
 719
 720         in_pan_update = true;
 721
 722         /* this runs during automation playback, and moves the bar controllers
 723            and/or pucks around.
 724         */
 725
 726         for (i = pan_adjustments.begin(), n = 0; i != pan_adjustments.end(); ++i, ++n) {
 727
 728                 if (only_if_aplay) {
 729                         boost::shared_ptr<AutomationList> alist (_panner->streampanner(n).pan_control()->alist());
 730
 731                         if (!alist->automation_playback()) {
 732                                 continue;
 733                         }
 734                 }
 735
 736                 AngularVector model = _panner->streampanner(n).get_effective_position();
 737                 double fract = (*i)->get_value();
 738                 AngularVector view (BaseStereoPanner::lr_fract_to_azimuth (fract), 0.0);
 739
 740                 if (!Panner::equivalent (model, view)) {
 741                         (*i)->set_value (BaseStereoPanner::azimuth_to_lr_fract (model.azi));
 742                 }
 743         }
 744
 745         in_pan_update = false;
 746 }
 747
 748 void
 749 PannerUI::update_pan_sensitive ()
 750 {
 751         bool const sensitive = !(_panner->mono()) && !(_panner->automation_state() & Play);
 752
 753         switch (_panner->nouts()) {
 754         case 0:
 755         case 1:
 756                 break;
 757         case 2:
 758                 for (vector<PannerBar*>::iterator i = pan_bars.begin(); i != pan_bars.end(); ++i) {
 759                         (*i)->set_sensitive (sensitive);
 760                 }
 761                 break;
 762         default:
 763                 if (twod_panner) {
 764                         twod_panner->set_sensitive (sensitive);
 765                 }
 766                 if (big_window) {
 767                         big_window->set_sensitive (sensitive);
 768                 }
 769                 break;
 770         }
 771 }
 772
 773 gint
 774 PannerUI::pan_automation_state_button_event (GdkEventButton *ev)
 775 {
 776         using namespace Menu_Helpers;
 777
 778         if (ev->type == GDK_BUTTON_RELEASE) {
 779                 return TRUE;
 780         }
 781
 782         switch (ev->button) {
 783         case 1:
 784                 if (pan_astate_menu == 0) {
 785                         build_astate_menu ();
 786                 }
 787                 pan_astate_menu->popup (1, ev->time);
 788                 break;
 789         default:
 790                 break;
 791         }
 792
 793         return TRUE;
 794 }
 795
 796 gint
 797 PannerUI::pan_automation_style_button_event (GdkEventButton *ev)
 798 {
 799         if (ev->type == GDK_BUTTON_RELEASE) {
 800                 return TRUE;
 801         }
 802
 803         switch (ev->button) {
 804         case 1:
 805                 if (pan_astyle_menu == 0) {
 806                         build_astyle_menu ();
 807                 }
 808                 pan_astyle_menu->popup (1, ev->time);
 809                 break;
 810         default:
 811                 break;
 812         }
 813         return TRUE;
 814 }
 815
 816 void
 817 PannerUI::pan_automation_style_changed ()
 818 {
 819         ENSURE_GUI_THREAD (*this, &PannerUI::pan_automation_style_changed)
 820
 821         switch (_width) {
 822         case Wide:
 823                 pan_automation_style_button.set_label (astyle_string(_panner->automation_style()));
 824                 break;
 825         case Narrow:
 826                 pan_automation_style_button.set_label (short_astyle_string(_panner->automation_style()));
 827                 break;
 828         }
 829 }
 830
 831 void
 832 PannerUI::pan_automation_state_changed ()
 833 {
 834         ENSURE_GUI_THREAD (*this, &PannerUI::pan_automation_state_changed)
 835
 836         bool x;
 837
 838         switch (_width) {
 839         case Wide:
 840           pan_automation_state_button.set_label (astate_string(_panner->automation_state()));
 841                 break;
 842         case Narrow:
 843           pan_automation_state_button.set_label (short_astate_string(_panner->automation_state()));
 844                 break;
 845         }
 846
 847         /* when creating a new session, we get to create busses (and
 848            sometimes tracks) with no outputs by the time they get
 849            here.
 850         */
 851
 852         if (_panner->empty()) {
 853                 return;
 854         }
 855
 856         x = (_panner->streampanner(0).pan_control()->alist()->automation_state() != Off);
 857
 858         if (pan_automation_state_button.get_active() != x) {
 859         ignore_toggle = true;
 860                 pan_automation_state_button.set_active (x);
 861                 ignore_toggle = false;
 862         }
 863
 864         update_pan_sensitive ();
 865
 866         /* start watching automation so that things move */
 867
 868         pan_watching.disconnect();
 869
 870         if (x) {
 871                 pan_watching = ARDOUR_UI::RapidScreenUpdate.connect (sigc::mem_fun (*this, &PannerUI::effective_pan_display));
 872         }
 873 }
 874
 875 string
 876 PannerUI::astate_string (AutoState state)
 877 {
 878         return _astate_string (state, false);
 879 }
 880
 881 string
 882 PannerUI::short_astate_string (AutoState state)
 883 {
 884         return _astate_string (state, true);
 885 }
 886
 887 string
 888 PannerUI::_astate_string (AutoState state, bool shrt)
 889 {
 890         string sstr;
 891
 892         switch (state) {
 893         case Off:
 894                 sstr = (shrt ? "M" : _("M"));
 895                 break;
 896         case Play:
 897                 sstr = (shrt ? "P" : _("P"));
 898                 break;
 899         case Touch:
 900                 sstr = (shrt ? "T" : _("T"));
 901                 break;
 902         case Write:
 903                 sstr = (shrt ? "W" : _("W"));
 904                 break;
 905         }
 906
 907         return sstr;
 908 }
 909
 910 string
 911 PannerUI::astyle_string (AutoStyle style)
 912 {
 913         return _astyle_string (style, false);
 914 }
 915
 916 string
 917 PannerUI::short_astyle_string (AutoStyle style)
 918 {
 919         return _astyle_string (style, true);
 920 }
 921
 922 string
 923 PannerUI::_astyle_string (AutoStyle style, bool shrt)
 924 {
 925         if (style & Trim) {
 926                 return _("Trim");
 927         } else {
 928                 /* XXX it might different in different languages */
 929
 930                 return (shrt ? _("Abs") : _("Abs"));
 931         }
 932 }
 933
 934 void
 935 PannerUI::set_mono (bool yn)
 936 {
 937         _panner->set_mono (yn);
 938         update_pan_sensitive ();
 939 }
 940
 941
 942 void
 943 PannerUI::connect_to_pan_control (uint32_t i)
 944 {
 945         _panner->pan_control(i)->Changed.connect (
 946                 _pan_control_connections, invalidator (*this), boost::bind (&PannerUI::pan_value_changed, this, i), gui_context ()
 947                 );
 948 }
 949
 950 void
 951 PannerUI::bar_spinner_activate (bool a)
 952 {
 953         _bar_spinner_active = a;
 954 }
 955
 956 void
 957 PannerUI::show_width ()
 958 {
 959 }
 960
 961 void
 962 PannerUI::width_adjusted ()
 963 {
 964 }
 965
 966 void
 967 PannerUI::show_position ()
 968 {
 969 }
 970
 971 void
 972 PannerUI::position_adjusted ()
 973 {
 974 }