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