gtk2_ardour/time_axis_view.cc

   1 /*
   2     Copyright (C) 2000 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
  20 #include <cstdlib>
  21 #include <cmath>
  22 #include <algorithm>
  23 #include <string>
  24 #include <list>
  25
  26 #include <libgnomecanvasmm.h>
  27 #include <libgnomecanvasmm/canvas.h>
  28 #include <libgnomecanvasmm/item.h>
  29
  30 #include "pbd/error.h"
  31 #include "pbd/convert.h"
  32
  33 #include <gtkmm2ext/utils.h>
  34 #include <gtkmm2ext/selector.h>
  35
  36 #include "ardour_ui.h"
  37 #include "global_signals.h"
  38 #include "gui_thread.h"
  39 #include "public_editor.h"
  40 #include "time_axis_view.h"
  41 #include "region_view.h"
  42 #include "ghostregion.h"
  43 #include "simplerect.h"
  44 #include "simpleline.h"
  45 #include "selection.h"
  46 #include "keyboard.h"
  47 #include "rgb_macros.h"
  48 #include "utils.h"
  49 #include "streamview.h"
  50 #include "editor_drag.h"
  51 #include "editor.h"
  52
  53 #include "i18n.h"
  54
  55 using namespace std;
  56 using namespace Gtk;
  57 using namespace Gdk;
  58 using namespace ARDOUR;
  59 using namespace PBD;
  60 using namespace Editing;
  61 using namespace ArdourCanvas;
  62 using Gtkmm2ext::Keyboard;
  63
  64 const double trim_handle_size = 6.0; /* pixels */
  65 uint32_t TimeAxisView::button_height = 0;
  66 uint32_t TimeAxisView::extra_height = 0;
  67 int const TimeAxisView::_max_order = 512;
  68 PBD::Signal1<void,TimeAxisView*> TimeAxisView::CatchDeletion;
  69
  70 TimeAxisView::TimeAxisView (ARDOUR::Session* sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  71         : AxisView (sess)
  72         , controls_table (2, 8)
  73         , name_entry (0)
  74         , _name_editing (false)
  75         , height (0)
  76         , display_menu (0)
  77         , parent (rent)
  78         , selection_group (0)
  79         , _hidden (false)
  80         , in_destructor (false)
  81         , _size_menu (0)
  82         , _canvas_display (0)
  83         , _y_position (0)
  84         , _editor (ed)
  85         , last_name_entry_key_press_event (0)
  86         , control_parent (0)
  87         , _order (0)
  88         , _effective_height (0)
  89         , _resize_drag_start (-1)
  90         , _preresize_cursor (0)
  91         , _have_preresize_cursor (false)
  92         , _ghost_group (0)
  93         , _ebox_release_can_act (true)
  94 {
  95         if (extra_height == 0) {
  96                 compute_heights ();
  97         }
  98
  99         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
 100         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
 101         _canvas_display->hide(); // reveal as needed
 102
 103         selection_group = new Group (*_canvas_display);
 104         selection_group->set_data (X_("timeselection"), (void *) 1);
 105         selection_group->hide();
 106
 107         _ghost_group = new Group (*_canvas_display);
 108         _ghost_group->lower_to_bottom();
 109         _ghost_group->show();
 110
 111         name_label.set_name ("TrackLabel");
 112         name_label.set_alignment (0.0, 0.5);
 113         ARDOUR_UI::instance()->set_tip (name_label, _("Track/Bus name (double click to edit)"));
 114
 115         /* typically, either name_label OR name_entry are visible,
 116            but not both. its up to derived classes to show/hide them as they
 117            wish.
 118         */
 119
 120         name_hbox.show ();
 121
 122         controls_table.set_size_request (200);
 123         controls_table.set_row_spacings (2);
 124         controls_table.set_col_spacings (2);
 125         controls_table.set_border_width (2);
 126         controls_table.set_homogeneous (true);
 127
 128         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 129         controls_table.show_all ();
 130         controls_table.set_no_show_all ();
 131
 132         HSeparator* separator = manage (new HSeparator());
 133
 134         controls_vbox.pack_start (controls_table, false, false);
 135         controls_vbox.show ();
 136
 137         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 138         controls_ebox.add (controls_vbox);
 139         controls_ebox.add_events (Gdk::BUTTON_PRESS_MASK|
 140                                   Gdk::BUTTON_RELEASE_MASK|
 141                                   Gdk::POINTER_MOTION_MASK|
 142                                   Gdk::ENTER_NOTIFY_MASK|
 143                                   Gdk::LEAVE_NOTIFY_MASK|
 144                                   Gdk::SCROLL_MASK);
 145         controls_ebox.set_flags (CAN_FOCUS);
 146
 147         /* note that this handler connects *before* the default handler */
 148         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 149         controls_ebox.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_press));
 150         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 151         controls_ebox.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_motion));
 152         controls_ebox.signal_leave_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_leave));
 153         controls_ebox.show ();
 154
 155         controls_hbox.pack_start (controls_ebox, true, true);
 156         controls_hbox.show ();
 157
 158         time_axis_vbox.pack_start (controls_hbox, true, true);
 159         time_axis_vbox.pack_end (*separator, false, false);
 160         time_axis_vbox.show();
 161
 162         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 163
 164         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), boost::bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 165 }
 166
 167 TimeAxisView::~TimeAxisView()
 168 {
 169         in_destructor = true;
 170
 171         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 172                 delete *i;
 173         }
 174
 175         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 176                 delete (*i)->rect;
 177                 delete (*i)->start_trim;
 178                 delete (*i)->end_trim;
 179
 180         }
 181
 182         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 183                 delete (*i)->rect;
 184                 delete (*i)->start_trim;
 185                 delete (*i)->end_trim;
 186         }
 187
 188         delete selection_group;
 189         selection_group = 0;
 190
 191         delete _canvas_background;
 192         _canvas_background = 0;
 193
 194         delete _canvas_display;
 195         _canvas_display = 0;
 196
 197         delete display_menu;
 198         display_menu = 0;
 199
 200         delete _size_menu;
 201 }
 202
 203 void
 204 TimeAxisView::hide ()
 205 {
 206         if (_hidden) {
 207                 return;
 208         }
 209
 210         _canvas_display->hide ();
 211         _canvas_background->hide ();
 212
 213         if (control_parent) {
 214                 control_parent->remove (time_axis_vbox);
 215                 control_parent = 0;
 216         }
 217
 218         _y_position = -1;
 219         _hidden = true;
 220
 221         /* now hide children */
 222
 223         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 224                 (*i)->hide ();
 225         }
 226
 227         /* if its hidden, it cannot be selected */
 228         _editor.get_selection().remove (this);
 229         /* and neither can its regions */
 230         _editor.get_selection().remove_regions (this);
 231
 232         Hiding ();
 233 }
 234
 235 /** Display this TimeAxisView as the nth component of the parent box, at y.
 236 *
 237 * @param y y position.
 238 * @param nth index for this TimeAxisView, increased if this view has children.
 239 * @param parent parent component.
 240 * @return height of this TimeAxisView.
 241 */
 242 guint32
 243 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 244 {
 245         if (control_parent) {
 246                 control_parent->reorder_child (time_axis_vbox, nth);
 247         } else {
 248                 control_parent = parent;
 249                 parent->pack_start (time_axis_vbox, false, false);
 250                 parent->reorder_child (time_axis_vbox, nth);
 251         }
 252
 253         _order = nth;
 254
 255         if (_y_position != y) {
 256                 _canvas_display->property_y () = y;
 257                 _canvas_background->property_y () = y;
 258                 /* silly canvas */
 259                 _canvas_display->move (0.0, 0.0);
 260                 _canvas_background->move (0.0, 0.0);
 261                 _y_position = y;
 262
 263         }
 264
 265         _canvas_background->raise_to_top ();
 266         _canvas_display->raise_to_top ();
 267
 268         _canvas_background->show ();
 269         _canvas_display->show ();
 270
 271         _hidden = false;
 272
 273         _effective_height = current_height ();
 274
 275         /* now show relevant children */
 276
 277         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 278                 if ((*i)->marked_for_display()) {
 279                         ++nth;
 280                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 281                 } else {
 282                         (*i)->hide ();
 283                 }
 284         }
 285
 286         return _effective_height;
 287 }
 288
 289 void
 290 TimeAxisView::clip_to_viewport ()
 291 {
 292         if (marked_for_display()) {
 293                 if (_y_position + _effective_height < _editor.get_trackview_group_vertical_offset () || _y_position > _editor.get_trackview_group_vertical_offset () + _canvas_display->get_canvas()->get_height()) {
 294                         _canvas_background->hide ();
 295                         _canvas_display->hide ();
 296                         return;
 297                 }
 298                 _canvas_background->show ();
 299                 _canvas_display->show ();
 300         }
 301         return;
 302 }
 303
 304 bool
 305 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 306 {
 307         switch (ev->direction) {
 308         case GDK_SCROLL_UP:
 309                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 310                         /* See Editor::_stepping_axis_view for notes on this hack */
 311                         Editor& e = dynamic_cast<Editor&> (_editor);
 312                         if (!e.stepping_axis_view ()) {
 313                                 e.set_stepping_axis_view (this);
 314                         }
 315                         e.stepping_axis_view()->step_height (false);
 316                         return true;
 317                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 318                         _editor.scroll_tracks_up_line();
 319                         return true;
 320                 }
 321                 break;
 322
 323         case GDK_SCROLL_DOWN:
 324                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 325                         /* See Editor::_stepping_axis_view for notes on this hack */
 326                         Editor& e = dynamic_cast<Editor&> (_editor);
 327                         if (!e.stepping_axis_view ()) {
 328                                 e.set_stepping_axis_view (this);
 329                         }
 330                         e.stepping_axis_view()->step_height (true);
 331                         return true;
 332                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 333                         _editor.scroll_tracks_down_line();
 334                         return true;
 335                 }
 336                 break;
 337
 338         default:
 339                 /* no handling for left/right, yet */
 340                 break;
 341         }
 342
 343         return false;
 344 }
 345
 346 bool
 347 TimeAxisView::controls_ebox_button_press (GdkEventButton* event)
 348 {
 349         if ((event->button == 1 && event->type == GDK_2BUTTON_PRESS) || Keyboard::is_edit_event (event)) {
 350                 /* see if it is inside the name label */
 351                 if (name_label.is_ancestor (controls_ebox)) {
 352                         int nlx;
 353                         int nly;
 354                         controls_ebox.translate_coordinates (name_label, event->x, event->y, nlx, nly);
 355                         Gtk::Allocation a = name_label.get_allocation ();
 356                         if (nlx > 0 && nlx < a.get_width() && nly > 0 && nly < a.get_height()) {
 357                                 begin_name_edit ((GdkEvent*) event);
 358                                 _ebox_release_can_act = false;
 359                                 return true;
 360                         }
 361                 }
 362
 363         }
 364
 365         _ebox_release_can_act = true;
 366
 367         if (maybe_set_cursor (event->y) > 0) {
 368                 _resize_drag_start = event->y_root;
 369         }
 370
 371         return true;
 372 }
 373
 374 void
 375 TimeAxisView::idle_resize (uint32_t h)
 376 {
 377         set_height (h);
 378 }
 379
 380
 381 bool
 382 TimeAxisView::controls_ebox_motion (GdkEventMotion* ev)
 383 {
 384         if (_resize_drag_start >= 0) {
 385                 /* (ab)use the DragManager to do autoscrolling; adjust the event coordinates
 386                    into the world coordinate space that DragManager::motion_handler is expecting,
 387                    and then fake a DragManager motion event so that when maybe_autoscroll
 388                    asks DragManager for the current pointer position it will get the correct
 389                    answers.
 390                 */
 391                 int tx, ty;
 392                 controls_ebox.translate_coordinates (*control_parent, ev->x, ev->y, tx, ty);
 393                 ev->y = ty - _editor.get_trackview_group_vertical_offset();
 394                 _editor.drags()->motion_handler ((GdkEvent *) ev, false);
 395                 _editor.maybe_autoscroll (false, true, false, ev->y_root < _resize_drag_start);
 396
 397                 /* now do the actual TAV resize */
 398                 int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
 399                 _editor.add_to_idle_resize (this, delta);
 400                 _resize_drag_start = ev->y_root;
 401         } else {
 402                 /* not dragging but ... */
 403                 maybe_set_cursor (ev->y);
 404         }
 405
 406         return true;
 407 }
 408
 409 bool
 410 TimeAxisView::controls_ebox_leave (GdkEventCrossing*)
 411 {
 412         if (_have_preresize_cursor) {
 413                 gdk_window_set_cursor (controls_ebox.get_window()->gobj(), _preresize_cursor);
 414                 _have_preresize_cursor = false;
 415         }
 416         return true;
 417 }
 418
 419 bool
 420 TimeAxisView::maybe_set_cursor (int y)
 421 {
 422         /* XXX no Gtkmm Gdk::Window::get_cursor() */
 423         Glib::RefPtr<Gdk::Window> win = controls_ebox.get_window();
 424
 425         if (y > (gint) floor (controls_ebox.get_height() * 0.75)) {
 426
 427                 /* y-coordinate in lower 25% */
 428
 429                 if (!_have_preresize_cursor) {
 430                         _preresize_cursor = gdk_window_get_cursor (win->gobj());
 431                         _have_preresize_cursor = true;
 432                         win->set_cursor (Gdk::Cursor(Gdk::SB_V_DOUBLE_ARROW));
 433                 }
 434
 435                 return 1;
 436
 437         } else if (_have_preresize_cursor) {
 438                 gdk_window_set_cursor (win->gobj(), _preresize_cursor);
 439                 _have_preresize_cursor = false;
 440
 441                 return -1;
 442         }
 443
 444         return 0;
 445 }
 446
 447 bool
 448 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 449 {
 450         if (_resize_drag_start >= 0) {
 451                 if (_have_preresize_cursor) {
 452                         gdk_window_set_cursor (controls_ebox.get_window()->gobj(), _preresize_cursor);
 453                         _preresize_cursor = 0;
 454                         _have_preresize_cursor = false;
 455                 }
 456                 _editor.stop_canvas_autoscroll ();
 457                 _resize_drag_start = -1;
 458         }
 459
 460         if (!_ebox_release_can_act) {
 461                 return true;
 462         }
 463
 464         switch (ev->button) {
 465         case 1:
 466                 selection_click (ev);
 467                 break;
 468
 469         case 3:
 470                 popup_display_menu (ev->time);
 471                 break;
 472         }
 473
 474         return true;
 475 }
 476
 477 void
 478 TimeAxisView::selection_click (GdkEventButton* ev)
 479 {
 480         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 481         _editor.set_selected_track (*this, op, false);
 482 }
 483
 484
 485 /** Steps through the defined heights for this TrackView.
 486  *  @param coarser true if stepping should decrease in size, otherwise false.
 487  */
 488 void
 489 TimeAxisView::step_height (bool coarser)
 490 {
 491         static const uint32_t step = 25;
 492
 493         if (coarser) {
 494
 495                 if (height <= preset_height (HeightSmall)) {
 496                         return;
 497                 } else if (height <= preset_height (HeightNormal) && height > preset_height (HeightSmall)) {
 498                         set_height_enum (HeightSmall);
 499                 } else {
 500                         set_height (height - step);
 501                 }
 502
 503         } else {
 504
 505                 if (height <= preset_height(HeightSmall)) {
 506                         set_height_enum (HeightNormal);
 507                 } else {
 508                         set_height (height + step);
 509                 }
 510
 511         }
 512 }
 513
 514 void
 515 TimeAxisView::set_height_enum (Height h, bool apply_to_selection)
 516 {
 517         if (apply_to_selection) {
 518                 _editor.get_selection().tracks.foreach_time_axis (boost::bind (&TimeAxisView::set_height_enum, _1, h, false));
 519         } else {
 520                 set_height (preset_height (h));
 521         }
 522 }
 523
 524 void
 525 TimeAxisView::set_height (uint32_t h)
 526 {
 527         if (h < preset_height (HeightSmall)) {
 528                 h = preset_height (HeightSmall);
 529         }
 530
 531         time_axis_vbox.property_height_request () = h;
 532         height = h;
 533
 534         char buf[32];
 535         snprintf (buf, sizeof (buf), "%u", height);
 536         set_gui_property ("height", buf);
 537
 538         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 539                 (*i)->set_height ();
 540         }
 541
 542         if (canvas_item_visible (selection_group)) {
 543                 /* resize the selection rect */
 544                 show_selection (_editor.get_selection().time);
 545         }
 546 }
 547
 548 bool
 549 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 550 {
 551         TrackViewList::iterator i;
 552
 553         switch (ev->keyval) {
 554         case GDK_Escape:
 555                 // revert back to the way it was because
 556                 // name_entry_changed() will still be called as we drop focus.
 557                 name_entry->set_text (name_label.get_text());
 558                 // moving the focus will trigger everything else
 559                 controls_ebox.grab_focus ();
 560                 return true;
 561
 562         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 563          * generates a different ev->keyval, rather than setting
 564          * ev->state.
 565          */
 566         case GDK_ISO_Left_Tab:
 567         case GDK_Tab:
 568         {
 569                 TrackViewList const & allviews = _editor.get_track_views ();
 570                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 571
 572                 if (ev->keyval == GDK_Tab) {
 573                         if (i != allviews.end()) {
 574
 575                                 do {
 576                                         if (++i == allviews.end()) {
 577                                                 return true;
 578                                         }
 579
 580                                         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*>(*i);
 581
 582                                         if (rtav && rtav->route()->record_enabled()) {
 583                                                 continue;
 584                                         }
 585
 586                                         if (!(*i)->hidden()) {
 587                                                 break;
 588                                         }
 589
 590                                 } while (true);
 591                         }
 592                 } else {
 593                         if (i != allviews.begin()) {
 594                                 do {
 595                                         if (i == allviews.begin()) {
 596                                                 return true;
 597                                         }
 598
 599                                         --i;
 600
 601                                         RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*>(*i);
 602
 603                                         if (rtav && rtav->route()->record_enabled()) {
 604                                                 continue;
 605                                         }
 606
 607                                         if (!(*i)->hidden()) {
 608                                                 break;
 609                                         }
 610
 611                                 } while (true);
 612                         }
 613                 }
 614
 615                 /* moving the focus will trigger everything else that is needed */
 616
 617                 if ((i != allviews.end()) && (*i != this) && !(*i)->hidden()) {
 618                         _editor.ensure_time_axis_view_is_visible (**i);
 619                         (*i)->begin_name_edit ((GdkEvent*) ev);
 620                 } else {
 621                         controls_ebox.grab_focus ();
 622                 }
 623
 624         }
 625         return true;
 626
 627         case GDK_Up:
 628         case GDK_Down:
 629                 controls_ebox.grab_focus ();
 630                 return true;
 631
 632         default:
 633                 break;
 634         }
 635
 636 #ifdef TIMEOUT_NAME_EDIT
 637         /* adapt the timeout to reflect the user's typing speed */
 638
 639         guint32 name_entry_timeout;
 640
 641         if (last_name_entry_key_press_event) {
 642                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 643                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 644         } else {
 645                 /* start with a 1 second timeout */
 646                 name_entry_timeout = 1000;
 647         }
 648
 649         last_name_entry_key_press_event = ev->time;
 650
 651         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 652
 653         name_entry_key_timeout.disconnect();
 654         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 655 #endif
 656
 657
 658         return false;
 659 }
 660
 661 void
 662 TimeAxisView::begin_name_edit (GdkEvent* event)
 663 {
 664         if (_name_editing) {
 665                 return;
 666         }
 667
 668         if (can_edit_name()) {
 669
 670                 _name_editing = true;
 671
 672                 show_name_entry ();
 673                 name_entry->select_region (0, -1);
 674                 name_entry->set_state (STATE_SELECTED);
 675                 name_entry->grab_focus ();
 676                 name_entry->start_editing (event);
 677         }
 678 }
 679
 680 void
 681 TimeAxisView::end_name_edit (bool push_focus)
 682 {
 683         if (!_name_editing) {
 684                 return;
 685         }
 686
 687         if (can_edit_name()) {
 688
 689                 _name_editing = false;
 690
 691                 last_name_entry_key_press_event = 0;
 692                 name_entry_key_timeout.disconnect ();
 693
 694                 if (push_focus) {
 695                         controls_ebox.grab_focus ();
 696                 }
 697
 698                 show_name_label ();
 699                 name_entry_changed ();
 700         }
 701 }
 702
 703 void
 704 TimeAxisView::name_entry_changed ()
 705 {
 706 }
 707
 708 bool
 709 TimeAxisView::name_entry_focus_in (GdkEventFocus* ev)
 710 {
 711         begin_name_edit ((GdkEvent*) ev);
 712         return false;
 713 }
 714
 715 bool
 716 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 717 {
 718         end_name_edit (false);
 719         return false;
 720 }
 721
 722 bool
 723 TimeAxisView::name_entry_key_timed_out ()
 724 {
 725         name_entry_activated();
 726         return false;
 727 }
 728
 729 void
 730 TimeAxisView::name_entry_activated ()
 731 {
 732         end_name_edit (true);
 733 }
 734
 735 bool
 736 TimeAxisView::can_edit_name () const
 737 {
 738         return true;
 739 }
 740
 741 bool
 742 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 743 {
 744         if (ev->button == 3) {
 745                 return true;
 746         }
 747
 748         if (ev->button == 1) {
 749                 if (ev->type != GDK_2BUTTON_PRESS) {
 750                         conditionally_add_to_selection ();
 751                 }
 752         }
 753
 754         return true;
 755 }
 756
 757 bool
 758 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 759 {
 760         if (ev->button == 3) {
 761                 popup_display_menu (ev->time);
 762                 return true;
 763         }
 764         return false;
 765 }
 766
 767 void
 768 TimeAxisView::conditionally_add_to_selection ()
 769 {
 770         Selection& s (_editor.get_selection ());
 771
 772         if (!s.selected (this)) {
 773                 _editor.set_selected_track (*this, Selection::Set);
 774         }
 775 }
 776
 777 void
 778 TimeAxisView::popup_display_menu (guint32 when)
 779 {
 780         conditionally_add_to_selection ();
 781
 782         build_display_menu ();
 783         display_menu->popup (1, when);
 784 }
 785
 786 void
 787 TimeAxisView::set_selected (bool yn)
 788 {
 789         if (yn == _selected) {
 790                 return;
 791         }
 792
 793         Selectable::set_selected (yn);
 794
 795         if (_selected) {
 796                 controls_ebox.set_name (controls_base_selected_name);
 797                 time_axis_vbox.set_name (controls_base_selected_name);
 798                 controls_vbox.set_name (controls_base_selected_name);
 799         } else {
 800                 controls_ebox.set_name (controls_base_unselected_name);
 801                 time_axis_vbox.set_name (controls_base_unselected_name);
 802                 controls_vbox.set_name (controls_base_unselected_name);
 803                 hide_selection ();
 804
 805                 /* children will be set for the yn=true case. but when deselecting
 806                    the editor only has a list of top-level trackviews, so we
 807                    have to do this here.
 808                 */
 809
 810                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 811                         (*i)->set_selected (false);
 812                 }
 813         }
 814 }
 815
 816 void
 817 TimeAxisView::build_display_menu ()
 818 {
 819         using namespace Menu_Helpers;
 820
 821         delete display_menu;
 822
 823         display_menu = new Menu;
 824         display_menu->set_name ("ArdourContextMenu");
 825
 826         // Just let implementing classes define what goes into the manu
 827 }
 828
 829 void
 830 TimeAxisView::set_samples_per_unit (double spu)
 831 {
 832         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 833                 (*i)->set_samples_per_unit (spu);
 834         }
 835
 836         AnalysisFeatureList::const_iterator i;
 837         list<ArdourCanvas::SimpleLine*>::iterator l;
 838 }
 839
 840 void
 841 TimeAxisView::show_timestretch (framepos_t start, framepos_t end, int layers, int layer)
 842 {
 843         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 844                 (*i)->show_timestretch (start, end, layers, layer);
 845         }
 846 }
 847
 848 void
 849 TimeAxisView::hide_timestretch ()
 850 {
 851         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 852                 (*i)->hide_timestretch ();
 853         }
 854 }
 855
 856 void
 857 TimeAxisView::show_selection (TimeSelection& ts)
 858 {
 859         double x1;
 860         double x2;
 861         double y2;
 862         SelectionRect *rect;
 863
 864         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 865                 (*i)->show_selection (ts);
 866         }
 867
 868         if (canvas_item_visible (selection_group)) {
 869                 while (!used_selection_rects.empty()) {
 870                         free_selection_rects.push_front (used_selection_rects.front());
 871                         used_selection_rects.pop_front();
 872                         free_selection_rects.front()->rect->hide();
 873                         free_selection_rects.front()->start_trim->hide();
 874                         free_selection_rects.front()->end_trim->hide();
 875                 }
 876                 selection_group->hide();
 877         }
 878
 879         selection_group->show();
 880         selection_group->raise_to_top();
 881
 882         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 883                 framepos_t start, end;
 884                 framecnt_t cnt;
 885
 886                 start = (*i).start;
 887                 end = (*i).end;
 888                 cnt = end - start + 1;
 889
 890                 rect = get_selection_rect ((*i).id);
 891
 892                 x1 = _editor.frame_to_unit (start);
 893                 x2 = _editor.frame_to_unit (start + cnt - 1);
 894                 y2 = current_height();
 895
 896                 rect->rect->property_x1() = x1;
 897                 rect->rect->property_y1() = 1.0;
 898                 rect->rect->property_x2() = x2;
 899                 rect->rect->property_y2() = y2;
 900
 901                 // trim boxes are at the top for selections
 902
 903                 if (x2 > x1) {
 904                         rect->start_trim->property_x1() = x1;
 905                         rect->start_trim->property_y1() = 1.0;
 906                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 907                         rect->start_trim->property_y2() = y2;
 908
 909                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 910                         rect->end_trim->property_y1() = 1.0;
 911                         rect->end_trim->property_x2() = x2;
 912                         rect->end_trim->property_y2() = y2;
 913
 914                         rect->start_trim->show();
 915                         rect->end_trim->show();
 916                 } else {
 917                         rect->start_trim->hide();
 918                         rect->end_trim->hide();
 919                 }
 920
 921                 rect->rect->show ();
 922                 used_selection_rects.push_back (rect);
 923         }
 924 }
 925
 926 void
 927 TimeAxisView::reshow_selection (TimeSelection& ts)
 928 {
 929         show_selection (ts);
 930
 931         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 932                 (*i)->show_selection (ts);
 933         }
 934 }
 935
 936 void
 937 TimeAxisView::hide_selection ()
 938 {
 939         if (canvas_item_visible (selection_group)) {
 940                 while (!used_selection_rects.empty()) {
 941                         free_selection_rects.push_front (used_selection_rects.front());
 942                         used_selection_rects.pop_front();
 943                         free_selection_rects.front()->rect->hide();
 944                         free_selection_rects.front()->start_trim->hide();
 945                         free_selection_rects.front()->end_trim->hide();
 946                 }
 947                 selection_group->hide();
 948         }
 949
 950         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 951                 (*i)->hide_selection ();
 952         }
 953 }
 954
 955 void
 956 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 957 {
 958         /* find the selection rect this is for. we have the item corresponding to one
 959            of the trim handles.
 960          */
 961
 962         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 963                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 964
 965                         /* make one trim handle be "above" the other so that if they overlap,
 966                            the top one is the one last used.
 967                         */
 968
 969                         (*i)->rect->raise_to_top ();
 970                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 971                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 972
 973                         break;
 974                 }
 975         }
 976 }
 977
 978 SelectionRect *
 979 TimeAxisView::get_selection_rect (uint32_t id)
 980 {
 981         SelectionRect *rect;
 982
 983         /* check to see if we already have a visible rect for this particular selection ID */
 984
 985         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 986                 if ((*i)->id == id) {
 987                         return (*i);
 988                 }
 989         }
 990
 991         /* ditto for the free rect list */
 992
 993         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 994                 if ((*i)->id == id) {
 995                         SelectionRect* ret = (*i);
 996                         free_selection_rects.erase (i);
 997                         return ret;
 998                 }
 999         }
1000
1001         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
1002
1003         if (free_selection_rects.empty()) {
1004
1005                 rect = new SelectionRect;
1006
1007                 rect->rect = new SimpleRect (*selection_group);
1008                 rect->rect->property_outline_what() = 0x0;
1009                 rect->rect->property_x1() = 0.0;
1010                 rect->rect->property_y1() = 0.0;
1011                 rect->rect->property_x2() = 0.0;
1012                 rect->rect->property_y2() = 0.0;
1013                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1014
1015                 rect->start_trim = new SimpleRect (*selection_group);
1016                 rect->start_trim->property_outline_what() = 0x0;
1017                 rect->start_trim->property_x1() = 0.0;
1018                 rect->start_trim->property_x2() = 0.0;
1019
1020                 rect->end_trim = new SimpleRect (*selection_group);
1021                 rect->end_trim->property_outline_what() = 0x0;
1022                 rect->end_trim->property_x1() = 0.0;
1023                 rect->end_trim->property_x2() = 0.0;
1024
1025                 free_selection_rects.push_front (rect);
1026
1027                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
1028                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
1029                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
1030         }
1031
1032         rect = free_selection_rects.front();
1033         rect->id = id;
1034         free_selection_rects.pop_front();
1035         return rect;
1036 }
1037
1038 struct null_deleter { void operator()(void const *) const {} };
1039
1040 bool
1041 TimeAxisView::is_child (TimeAxisView* tav)
1042 {
1043         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
1044 }
1045
1046 void
1047 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
1048 {
1049         children.push_back (child);
1050 }
1051
1052 void
1053 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
1054 {
1055         Children::iterator i;
1056
1057         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
1058                 children.erase (i);
1059         }
1060 }
1061
1062 /** Get selectable things within a given range.
1063  *  @param start Start time in session frames.
1064  *  @param end End time in session frames.
1065  *  @param top Top y range, in trackview coordinates (ie 0 is the top of the track view)
1066  *  @param bot Bottom y range, in trackview coordinates (ie 0 is the top of the track view)
1067  *  @param result Filled in with selectable things.
1068  */
1069 void
1070 TimeAxisView::get_selectables (framepos_t /*start*/, framepos_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
1071 {
1072         return;
1073 }
1074
1075 void
1076 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
1077 {
1078         return;
1079 }
1080
1081 void
1082 TimeAxisView::add_ghost (RegionView* rv)
1083 {
1084         GhostRegion* gr = rv->add_ghost (*this);
1085
1086         if (gr) {
1087                 ghosts.push_back(gr);
1088         }
1089 }
1090
1091 void
1092 TimeAxisView::remove_ghost (RegionView* rv)
1093 {
1094         rv->remove_ghost_in (*this);
1095 }
1096
1097 void
1098 TimeAxisView::erase_ghost (GhostRegion* gr)
1099 {
1100         if (in_destructor) {
1101                 return;
1102         }
1103
1104         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
1105                 if ((*i) == gr) {
1106                         ghosts.erase (i);
1107                         break;
1108                 }
1109         }
1110 }
1111
1112 bool
1113 TimeAxisView::touched (double top, double bot)
1114 {
1115         /* remember: this is X Window - coordinate space starts in upper left and moves down.
1116           y_position is the "origin" or "top" of the track.
1117         */
1118
1119         double mybot = _y_position + current_height();
1120
1121         return ((_y_position <= bot && _y_position >= top) ||
1122                 ((mybot <= bot) && (top < mybot)) ||
1123                 (mybot >= bot && _y_position < top));
1124 }
1125
1126 void
1127 TimeAxisView::set_parent (TimeAxisView& p)
1128 {
1129         parent = &p;
1130 }
1131
1132 void
1133 TimeAxisView::reset_height ()
1134 {
1135         set_height (height);
1136
1137         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1138                 (*i)->set_height ((*i)->height);
1139         }
1140 }
1141
1142 void
1143 TimeAxisView::compute_heights ()
1144 {
1145         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1146         Gtk::Table two_row_table (2, 8);
1147         Gtk::Table one_row_table (1, 8);
1148         Button* buttons[5];
1149         const int border_width = 2;
1150
1151         const int separator_height = 2;
1152         extra_height = (2 * border_width) + separator_height;
1153
1154         window.add (one_row_table);
1155
1156         one_row_table.set_border_width (border_width);
1157         one_row_table.set_row_spacings (0);
1158         one_row_table.set_col_spacings (0);
1159         one_row_table.set_homogeneous (true);
1160
1161         two_row_table.set_border_width (border_width);
1162         two_row_table.set_row_spacings (0);
1163         two_row_table.set_col_spacings (0);
1164         two_row_table.set_homogeneous (true);
1165
1166         for (int i = 0; i < 5; ++i) {
1167                 buttons[i] = manage (new Button (X_("f")));
1168                 buttons[i]->set_name ("TrackMuteButton");
1169         }
1170
1171         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1172
1173         one_row_table.show_all ();
1174         Gtk::Requisition req(one_row_table.size_request ());
1175
1176         // height required to show 1 row of buttons
1177         button_height = req.height;
1178 }
1179
1180 void
1181 TimeAxisView::show_name_label ()
1182 {
1183         if (name_entry && name_entry->is_ancestor (name_hbox)) {
1184                 name_hbox.remove (*name_entry);
1185         }
1186
1187         if (!name_label.is_ancestor (name_hbox) && name_label.get_parent() == 0) {
1188                 name_hbox.pack_start (name_label, true, true);
1189                 name_hbox.show ();
1190                 name_label.show ();
1191         }
1192 }
1193
1194 void
1195 TimeAxisView::show_name_entry ()
1196 {
1197         if (!name_entry) {
1198                 /*
1199                   Create the standard LHS Controls
1200                   We create the top-level container and name add the name label here,
1201                   subclasses can add to the layout as required
1202                 */
1203
1204                 name_entry = new Gtkmm2ext::FocusEntry;
1205
1206                 name_entry->set_name ("EditorTrackNameDisplay");
1207                 name_entry->signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release), false);
1208                 name_entry->signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press), false);
1209                 name_entry->signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
1210                 name_entry->signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
1211                 name_entry->signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
1212                 name_entry->signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
1213                 Gtkmm2ext::set_size_request_to_display_given_text (*name_entry, N_("gTortnam"), 10, 10); // just represents a short name
1214
1215                 name_entry->set_text (name_label.get_text());
1216         }
1217
1218         if (name_label.is_ancestor (name_hbox)) {
1219                 name_hbox.remove (name_label);
1220         }
1221
1222         if (!name_entry->is_ancestor (name_hbox) && name_label.get_parent() == 0) {
1223                 name_hbox.pack_start (*name_entry, true, true);
1224                 name_hbox.show ();
1225                 name_entry->show ();
1226         }
1227 }
1228
1229 void
1230 TimeAxisView::color_handler ()
1231 {
1232         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); i++) {
1233                 (*i)->set_colors();
1234         }
1235
1236         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1237
1238                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1239                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1240
1241                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1242                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1243
1244                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1245                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1246         }
1247
1248         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1249
1250                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1251                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1252
1253                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1254                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1255
1256                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1257                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1258         }
1259 }
1260
1261 /** @return Pair: TimeAxisView, layer index.
1262  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1263  * If the covering object is a child axis, then the child is returned.
1264  * TimeAxisView is 0 otherwise.
1265  * Layer index is the layer number (possibly fractional) if the TimeAxisView is valid
1266  * and is in stacked or expanded * region display mode, otherwise 0.
1267  */
1268 std::pair<TimeAxisView*, double>
1269 TimeAxisView::covers_y_position (double y)
1270 {
1271         if (hidden()) {
1272                 return std::make_pair ((TimeAxisView *) 0, 0);
1273         }
1274
1275         if (_y_position <= y && y < (_y_position + height)) {
1276
1277                 /* work out the layer index if appropriate */
1278                 double l = 0;
1279                 switch (layer_display ()) {
1280                 case Overlaid:
1281                         break;
1282                 case Stacked:
1283                         if (view ()) {
1284                                 /* compute layer */
1285                                 l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1286                                 /* clamp to max layers to be on the safe side; sometimes the above calculation
1287                                    returns a too-high value */
1288                                 if (l >= view()->layers ()) {
1289                                         l = view()->layers() - 1;
1290                                 }
1291                         }
1292                         break;
1293                 case Expanded:
1294                         if (view ()) {
1295                                 int const n = floor ((_y_position + height - y) / (view()->child_height ()));
1296                                 l = n * 0.5 - 0.5;
1297                                 if (l >= (view()->layers() - 0.5)) {
1298                                         l = view()->layers() - 0.5;
1299                                 }
1300                         }
1301                         break;
1302                 }
1303
1304                 return std::make_pair (this, l);
1305         }
1306
1307         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1308
1309                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1310                 if (r.first) {
1311                         return r;
1312                 }
1313         }
1314
1315         return std::make_pair ((TimeAxisView *) 0, 0);
1316 }
1317
1318
1319 uint32_t
1320 TimeAxisView::preset_height (Height h)
1321 {
1322         switch (h) {
1323         case HeightLargest:
1324                 return (button_height * 2) + extra_height + 260;
1325         case HeightLarger:
1326                 return (button_height * 2) + extra_height + 160;
1327         case HeightLarge:
1328                 return (button_height * 2) + extra_height + 60;
1329         case HeightNormal:
1330                 return (button_height * 2) + extra_height + 10;
1331         case HeightSmall:
1332                 return button_height + extra_height;
1333         }
1334
1335         /* NOTREACHED */
1336         return 0;
1337 }
1338
1339 /** @return Child time axis views that are not hidden */
1340 TimeAxisView::Children
1341 TimeAxisView::get_child_list ()
1342 {
1343         Children c;
1344
1345         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1346                 if (!(*i)->hidden()) {
1347                         c.push_back(*i);
1348                 }
1349         }
1350
1351         return c;
1352 }
1353
1354 void
1355 TimeAxisView::build_size_menu ()
1356 {
1357         if (_size_menu && _size_menu->gobj ()) {
1358                 return;
1359         }
1360
1361         delete _size_menu;
1362
1363         using namespace Menu_Helpers;
1364
1365         _size_menu = new Menu;
1366         _size_menu->set_name ("ArdourContextMenu");
1367         MenuList& items = _size_menu->items();
1368
1369         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLargest, true)));
1370         items.push_back (MenuElem (_("Larger"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarger, true)));
1371         items.push_back (MenuElem (_("Large"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarge, true)));
1372         items.push_back (MenuElem (_("Normal"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightNormal, true)));
1373         items.push_back (MenuElem (_("Small"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmall, true)));
1374 }
1375
1376 void
1377 TimeAxisView::reset_visual_state ()
1378 {
1379         /* this method is not required to trigger a global redraw */
1380
1381         string str = gui_property ("height");
1382
1383         if (!str.empty()) {
1384                 set_height (atoi (str));
1385         } else {
1386                 set_height (preset_height (HeightNormal));
1387         }
1388 }
1389
1390 TrackViewList
1391 TrackViewList::filter_to_unique_playlists ()
1392 {
1393         std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists;
1394         TrackViewList ts;
1395
1396         for (iterator i = begin(); i != end(); ++i) {
1397                 RouteTimeAxisView* rtav = dynamic_cast<RouteTimeAxisView*> (*i);
1398                 if (!rtav) {
1399                         /* not a route: include it anyway */
1400                         ts.push_back (*i);
1401                 } else {
1402                         boost::shared_ptr<ARDOUR::Track> t = rtav->track();
1403                         if (t) {
1404                                 if (playlists.insert (t->playlist()).second) {
1405                                         /* playlist not seen yet */
1406                                         ts.push_back (*i);
1407                                 }
1408                         } else {
1409                                 /* not a track: include it anyway */
1410                                 ts.push_back (*i);
1411                         }
1412                 }
1413         }
1414         return ts;
1415 }