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