gtk2_ardour/time_axis_view.cc

   1 /*
   2     Copyright (C) 2000 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #include <cstdlib>
  21 #include <cmath>
  22 #include <algorithm>
  23 #include <string>
  24 #include <list>
  25
  26 #include <libgnomecanvasmm.h>
  27 #include <libgnomecanvasmm/canvas.h>
  28 #include <libgnomecanvasmm/item.h>
  29
  30 #include "pbd/error.h"
  31 #include "pbd/convert.h"
  32
  33 #include <gtkmm2ext/utils.h>
  34 #include <gtkmm2ext/selector.h>
  35
  36 #include "ardour/session.h"
  37 #include "ardour/utils.h"
  38 #include "ardour/ladspa_plugin.h"
  39 #include "ardour/processor.h"
  40 #include "ardour/location.h"
  41
  42 #include "ardour_ui.h"
  43 #include "global_signals.h"
  44 #include "gui_thread.h"
  45 #include "public_editor.h"
  46 #include "time_axis_view.h"
  47 #include "region_view.h"
  48 #include "ghostregion.h"
  49 #include "simplerect.h"
  50 #include "simpleline.h"
  51 #include "selection.h"
  52 #include "keyboard.h"
  53 #include "rgb_macros.h"
  54 #include "utils.h"
  55 #include "streamview.h"
  56 #include "editor_drag.h"
  57
  58 #include "i18n.h"
  59
  60 using namespace std;
  61 using namespace Gtk;
  62 using namespace Gdk;
  63 using namespace ARDOUR;
  64 using namespace PBD;
  65 using namespace Editing;
  66 using namespace ArdourCanvas;
  67 using Gtkmm2ext::Keyboard;
  68
  69 const double trim_handle_size = 6.0; /* pixels */
  70 uint32_t TimeAxisView::extra_height;
  71 uint32_t TimeAxisView::smaller_height;
  72 int const TimeAxisView::_max_order = 512;
  73 PBD::Signal1<void,TimeAxisView*> TimeAxisView::CatchDeletion;
  74
  75 TimeAxisView::TimeAxisView (ARDOUR::Session* sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  76         : AxisView (sess),
  77           controls_table (2, 8),
  78           _y_position (0),
  79           _editor (ed),
  80           _order (0)
  81 {
  82         if (extra_height == 0) {
  83                 compute_heights ();
  84         }
  85
  86         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  87         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  88         _canvas_display->hide(); // reveal as needed
  89
  90         selection_group = new Group (*_canvas_display);
  91         selection_group->set_data (X_("timeselection"), (void *) 1);
  92         selection_group->hide();
  93
  94         _ghost_group = new Group (*_canvas_display);
  95         _ghost_group->lower_to_bottom();
  96         _ghost_group->show();
  97
  98         control_parent = 0;
  99         display_menu = 0;
 100         _hidden = false;
 101         in_destructor = false;
 102         height = 0;
 103         _effective_height = 0;
 104         parent = rent;
 105         _has_state = false;
 106         last_name_entry_key_press_event = 0;
 107         name_packing = NamePackingBits (0);
 108         _resize_drag_start = -1;
 109
 110         /*
 111           Create the standard LHS Controls
 112           We create the top-level container and name add the name label here,
 113           subclasses can add to the layout as required
 114         */
 115
 116         name_entry.set_name ("EditorTrackNameDisplay");
 117         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 118         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 119         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 120         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 121         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 122         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 123         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 124
 125         name_label.set_name ("TrackLabel");
 126         name_label.set_alignment (0.0, 0.5);
 127
 128         /* typically, either name_label OR name_entry are visible,
 129            but not both. its up to derived classes to show/hide them as they
 130            wish.
 131         */
 132
 133         name_hbox.show ();
 134
 135         controls_table.set_size_request (200);
 136         controls_table.set_border_width (2);
 137         controls_table.set_row_spacings (0);
 138         controls_table.set_col_spacings (0);
 139         controls_table.set_homogeneous (true);
 140
 141         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 142         controls_table.show_all ();
 143         controls_table.set_no_show_all ();
 144
 145         resizer.set_size_request (10, 6);
 146         resizer.set_name ("ResizeHandle");
 147         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 148         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 149         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 150         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 151
 152         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 153                         Gdk::BUTTON_RELEASE_MASK|
 154                         Gdk::POINTER_MOTION_MASK|
 155                         Gdk::SCROLL_MASK);
 156
 157         resizer_box.pack_start (resizer, false, false);
 158         resizer.show ();
 159         resizer_box.show();
 160
 161         HSeparator* separator = manage (new HSeparator());
 162
 163         controls_vbox.pack_start (controls_table, false, false);
 164         controls_vbox.pack_end (resizer_box, false, false);
 165         controls_vbox.show ();
 166
 167         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 168         controls_ebox.add (controls_vbox);
 169         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 170         controls_ebox.set_flags (CAN_FOCUS);
 171
 172         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 173         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 174
 175         controls_hbox.pack_start (controls_ebox, false, false);
 176         controls_hbox.show ();
 177
 178         time_axis_vbox.pack_start (controls_hbox, true, true);
 179         time_axis_vbox.pack_end (*separator, false, false);
 180         time_axis_vbox.show();
 181
 182         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 183
 184         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 185 }
 186
 187 TimeAxisView::~TimeAxisView()
 188 {
 189         in_destructor = true;
 190
 191         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 192                 delete *i;
 193         }
 194
 195         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 196                 delete (*i)->rect;
 197                 delete (*i)->start_trim;
 198                 delete (*i)->end_trim;
 199
 200         }
 201
 202         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 203                 delete (*i)->rect;
 204                 delete (*i)->start_trim;
 205                 delete (*i)->end_trim;
 206         }
 207
 208         delete selection_group;
 209         selection_group = 0;
 210
 211         delete _canvas_background;
 212         _canvas_background = 0;
 213
 214         delete _canvas_display;
 215         _canvas_display = 0;
 216
 217         delete display_menu;
 218         display_menu = 0;
 219 }
 220
 221 /** Display this TimeAxisView as the nth component of the parent box, at y.
 222 *
 223 * @param y y position.
 224 * @param nth index for this TimeAxisView, increased if this view has children.
 225 * @param parent parent component.
 226 * @return height of this TimeAxisView.
 227 */
 228 guint32
 229 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 230 {
 231         if (control_parent) {
 232                 control_parent->reorder_child (time_axis_vbox, nth);
 233         } else {
 234                 control_parent = parent;
 235                 parent->pack_start (time_axis_vbox, false, false);
 236                 parent->reorder_child (time_axis_vbox, nth);
 237         }
 238
 239         _order = nth;
 240
 241         if (_y_position != y) {
 242                 _canvas_display->property_y () = y;
 243                 _canvas_background->property_y () = y;
 244                 /* silly canvas */
 245                 _canvas_display->move (0.0, 0.0);
 246                 _canvas_background->move (0.0, 0.0);
 247                 _y_position = y;
 248
 249         }
 250
 251         _canvas_background->raise_to_top ();
 252         _canvas_display->raise_to_top ();
 253
 254         if (_marked_for_display) {
 255                 time_axis_vbox.show ();
 256                 controls_ebox.show ();
 257                 _canvas_background->show ();
 258         }
 259
 260         _hidden = false;
 261
 262         _effective_height = current_height ();
 263
 264         /* now show children */
 265
 266         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 267                 if (canvas_item_visible ((*i)->_canvas_display)) {
 268                         ++nth;
 269                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 270                 }
 271         }
 272
 273         return _effective_height;
 274 }
 275
 276 void
 277 TimeAxisView::clip_to_viewport ()
 278 {
 279         if (_marked_for_display) {
 280                 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()) {
 281                         _canvas_background->hide ();
 282                         _canvas_display->hide ();
 283                         return;
 284                 }
 285                 _canvas_background->show ();
 286                 _canvas_display->show ();
 287         }
 288         return;
 289 }
 290
 291 bool
 292 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 293 {
 294         if (Keyboard::some_magic_widget_has_focus()) {
 295                 return false;
 296         }
 297
 298         switch (ev->direction) {
 299         case GDK_SCROLL_UP:
 300                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 301                         step_height (true);
 302                         return true;
 303                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 304                         _editor.scroll_tracks_up_line();
 305                         return true;
 306                 }
 307                 break;
 308
 309         case GDK_SCROLL_DOWN:
 310                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 311                         step_height (false);
 312                         return true;
 313                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 314                         _editor.scroll_tracks_down_line();
 315                         return true;
 316                 }
 317                 break;
 318
 319         default:
 320                 /* no handling for left/right, yet */
 321                 break;
 322         }
 323
 324         return false;
 325 }
 326
 327 bool
 328 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 329 {
 330         switch (ev->button) {
 331         case 1:
 332                 selection_click (ev);
 333                 break;
 334
 335         case 3:
 336                 popup_display_menu (ev->time);
 337                 break;
 338         }
 339
 340         return true;
 341 }
 342
 343 void
 344 TimeAxisView::selection_click (GdkEventButton* ev)
 345 {
 346         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 347         _editor.set_selected_track (*this, op, false);
 348 }
 349
 350 void
 351 TimeAxisView::hide ()
 352 {
 353         if (_hidden) {
 354                 return;
 355         }
 356
 357         _canvas_display->hide ();
 358         _canvas_background->hide ();
 359
 360         if (control_parent) {
 361                 control_parent->remove (time_axis_vbox);
 362                 control_parent = 0;
 363         }
 364
 365         _y_position = -1;
 366         _hidden = true;
 367
 368         /* now hide children */
 369
 370         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 371                 (*i)->hide ();
 372         }
 373
 374         /* if its hidden, it cannot be selected */
 375         _editor.get_selection().remove (this);
 376         /* and neither can its regions */
 377         _editor.get_selection().remove_regions (this);
 378
 379         Hiding ();
 380 }
 381
 382 void
 383 TimeAxisView::step_height (bool bigger)
 384 {
 385         static const uint32_t step = 25;
 386
 387         if (bigger) {
 388                 if (height == preset_height(HeightSmall)) {
 389                         set_height (preset_height(HeightSmaller));
 390                 }
 391                 else if (height == preset_height(HeightSmaller)) {
 392                         set_height (preset_height(HeightNormal));
 393                 }
 394                 else {
 395                         set_height (height + step);
 396                 }
 397
 398         } else {
 399                 if ( height == preset_height(HeightSmall)){
 400                         return;
 401                 }
 402
 403                 if (height <= preset_height (HeightSmaller) && height > preset_height (HeightSmall)) {
 404                         set_height (preset_height(HeightSmall));
 405                 }
 406                 else if ( height <= preset_height (HeightNormal) && height > preset_height (HeightSmaller)){
 407                         set_height (preset_height(HeightSmaller));
 408                 }
 409                 else {
 410                         set_height (height - step);
 411                 }
 412         }
 413 }
 414
 415 void
 416 TimeAxisView::set_heights (uint32_t h)
 417 {
 418         TrackSelection& ts (_editor.get_selection().tracks);
 419
 420         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 421                 (*i)->set_height (h);
 422         }
 423 }
 424
 425 void
 426 TimeAxisView::set_height (Height h)
 427 {
 428         set_height (preset_height (h));
 429 }
 430
 431 void
 432 TimeAxisView::set_height (uint32_t h)
 433 {
 434         if (h < preset_height (HeightSmall)) {
 435                 h = preset_height (HeightSmall);
 436         }
 437
 438         time_axis_vbox.property_height_request () = h;
 439         height = h;
 440
 441         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 442                 (*i)->set_height ();
 443         }
 444
 445         if (canvas_item_visible (selection_group)) {
 446                 /* resize the selection rect */
 447                 show_selection (_editor.get_selection().time);
 448         }
 449 }
 450
 451 bool
 452 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 453 {
 454         TrackViewList::iterator i;
 455
 456         switch (ev->keyval) {
 457         case GDK_Escape:
 458                 name_entry.select_region (0,0);
 459                 controls_ebox.grab_focus ();
 460                 name_entry_changed ();
 461                 return true;
 462
 463         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 464          * generates a different ev->keyval, rather than setting
 465          * ev->state.
 466          */
 467         case GDK_ISO_Left_Tab:
 468         case GDK_Tab:
 469         {
 470                 name_entry_changed ();
 471                 TrackViewList const & allviews = _editor.get_track_views ();
 472                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 473                 if (ev->keyval == GDK_Tab) {
 474                         if (i != allviews.end()) {
 475                                 do {
 476                                         if (++i == allviews.end()) {
 477                                                 return true;
 478                                         }
 479                                 } while((*i)->hidden());
 480                         }
 481                 } else {
 482                         if (i != allviews.begin()) {
 483                                 do {
 484                                         if (i == allviews.begin()) {
 485                                                 return true;
 486                                         }
 487                                         --i;
 488                                 } while ((*i)->hidden());
 489                         }
 490                 }
 491
 492
 493                 /* resize to show editable name display */
 494
 495                 if ((*i)->current_height() <= preset_height (HeightSmaller)) {
 496                         (*i)->set_height (HeightSmaller);
 497                 }
 498
 499                 (*i)->name_entry.grab_focus();
 500         }
 501         return true;
 502
 503         case GDK_Up:
 504         case GDK_Down:
 505                 name_entry_changed ();
 506                 return true;
 507
 508         default:
 509                 break;
 510         }
 511
 512 #ifdef TIMEOUT_NAME_EDIT
 513         /* adapt the timeout to reflect the user's typing speed */
 514
 515         guint32 name_entry_timeout;
 516
 517         if (last_name_entry_key_press_event) {
 518                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 519                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 520         } else {
 521                 /* start with a 1 second timeout */
 522                 name_entry_timeout = 1000;
 523         }
 524
 525         last_name_entry_key_press_event = ev->time;
 526
 527         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 528
 529         name_entry_key_timeout.disconnect();
 530         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 531 #endif
 532
 533         return false;
 534 }
 535
 536 bool
 537 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 538 {
 539         name_entry.select_region (0, -1);
 540         name_entry.set_name ("EditorActiveTrackNameDisplay");
 541         return false;
 542 }
 543
 544 bool
 545 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 546 {
 547         /* clean up */
 548
 549         last_name_entry_key_press_event = 0;
 550         name_entry_key_timeout.disconnect ();
 551         name_entry.set_name ("EditorTrackNameDisplay");
 552         name_entry.select_region (0,0);
 553
 554         /* do the real stuff */
 555
 556         name_entry_changed ();
 557
 558         return false;
 559 }
 560
 561 bool
 562 TimeAxisView::name_entry_key_timed_out ()
 563 {
 564         name_entry_activated();
 565         return false;
 566 }
 567
 568 void
 569 TimeAxisView::name_entry_activated ()
 570 {
 571         controls_ebox.grab_focus();
 572 }
 573
 574 void
 575 TimeAxisView::name_entry_changed ()
 576 {
 577 }
 578
 579 bool
 580 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 581 {
 582         if (ev->button == 3) {
 583                 return true;
 584         }
 585         return false;
 586 }
 587
 588 bool
 589 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 590 {
 591         if (ev->button == 3) {
 592                 popup_display_menu (ev->time);
 593                 return true;
 594         }
 595         return false;
 596 }
 597
 598 void
 599 TimeAxisView::conditionally_add_to_selection ()
 600 {
 601         Selection& s (_editor.get_selection ());
 602
 603         if (!s.selected (this)) {
 604                 _editor.set_selected_track (*this, Selection::Set);
 605         }
 606 }
 607
 608 void
 609 TimeAxisView::popup_display_menu (guint32 when)
 610 {
 611         if (display_menu == 0) {
 612                 build_display_menu ();
 613         }
 614
 615         conditionally_add_to_selection ();
 616         display_menu->popup (1, when);
 617 }
 618
 619 void
 620 TimeAxisView::set_selected (bool yn)
 621 {
 622         if (yn == _selected) {
 623                 return;
 624         }
 625
 626         Selectable::set_selected (yn);
 627
 628         if (_selected) {
 629                 controls_ebox.set_name (controls_base_selected_name);
 630                 time_axis_vbox.set_name (controls_base_selected_name);
 631                 controls_vbox.set_name (controls_base_selected_name);
 632         } else {
 633                 controls_ebox.set_name (controls_base_unselected_name);
 634                 time_axis_vbox.set_name (controls_base_unselected_name);
 635                 controls_vbox.set_name (controls_base_unselected_name);
 636                 hide_selection ();
 637
 638                 /* children will be set for the yn=true case. but when deselecting
 639                    the editor only has a list of top-level trackviews, so we
 640                    have to do this here.
 641                 */
 642
 643                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 644                         (*i)->set_selected (false);
 645                 }
 646         }
 647
 648         resizer.queue_draw ();
 649 }
 650
 651 void
 652 TimeAxisView::build_display_menu ()
 653 {
 654         using namespace Menu_Helpers;
 655
 656         delete display_menu;
 657
 658         display_menu = new Menu;
 659         display_menu->set_name ("ArdourContextMenu");
 660
 661         // Just let implementing classes define what goes into the manu
 662 }
 663
 664 void
 665 TimeAxisView::set_samples_per_unit (double spu)
 666 {
 667         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 668                 (*i)->set_samples_per_unit (spu);
 669         }
 670
 671         AnalysisFeatureList::const_iterator i;
 672         list<ArdourCanvas::SimpleLine*>::iterator l;
 673 }
 674
 675 void
 676 TimeAxisView::show_timestretch (framepos_t start, framepos_t end)
 677 {
 678         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 679                 (*i)->show_timestretch (start, end);
 680         }
 681 }
 682
 683 void
 684 TimeAxisView::hide_timestretch ()
 685 {
 686         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 687                 (*i)->hide_timestretch ();
 688         }
 689 }
 690
 691 void
 692 TimeAxisView::show_selection (TimeSelection& ts)
 693 {
 694         double x1;
 695         double x2;
 696         double y2;
 697         SelectionRect *rect;
 698
 699         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 700                 (*i)->show_selection (ts);
 701         }
 702
 703         if (canvas_item_visible (selection_group)) {
 704                 while (!used_selection_rects.empty()) {
 705                         free_selection_rects.push_front (used_selection_rects.front());
 706                         used_selection_rects.pop_front();
 707                         free_selection_rects.front()->rect->hide();
 708                         free_selection_rects.front()->start_trim->hide();
 709                         free_selection_rects.front()->end_trim->hide();
 710                 }
 711                 selection_group->hide();
 712         }
 713
 714         selection_group->show();
 715         selection_group->raise_to_top();
 716
 717         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 718                 framepos_t start, end;
 719                 framecnt_t cnt;
 720
 721                 start = (*i).start;
 722                 end = (*i).end;
 723                 cnt = end - start + 1;
 724
 725                 rect = get_selection_rect ((*i).id);
 726
 727                 x1 = _editor.frame_to_unit (start);
 728                 x2 = _editor.frame_to_unit (start + cnt - 1);
 729                 y2 = current_height();
 730
 731                 rect->rect->property_x1() = x1;
 732                 rect->rect->property_y1() = 1.0;
 733                 rect->rect->property_x2() = x2;
 734                 rect->rect->property_y2() = y2;
 735
 736                 // trim boxes are at the top for selections
 737
 738                 if (x2 > x1) {
 739                         rect->start_trim->property_x1() = x1;
 740                         rect->start_trim->property_y1() = 1.0;
 741                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 742                         rect->start_trim->property_y2() = y2;
 743
 744                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 745                         rect->end_trim->property_y1() = 1.0;
 746                         rect->end_trim->property_x2() = x2;
 747                         rect->end_trim->property_y2() = y2;
 748
 749                         rect->start_trim->show();
 750                         rect->end_trim->show();
 751                 } else {
 752                         rect->start_trim->hide();
 753                         rect->end_trim->hide();
 754                 }
 755
 756                 rect->rect->show ();
 757                 used_selection_rects.push_back (rect);
 758         }
 759 }
 760
 761 void
 762 TimeAxisView::reshow_selection (TimeSelection& ts)
 763 {
 764         show_selection (ts);
 765
 766         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 767                 (*i)->show_selection (ts);
 768         }
 769 }
 770
 771 void
 772 TimeAxisView::hide_selection ()
 773 {
 774         if (canvas_item_visible (selection_group)) {
 775                 while (!used_selection_rects.empty()) {
 776                         free_selection_rects.push_front (used_selection_rects.front());
 777                         used_selection_rects.pop_front();
 778                         free_selection_rects.front()->rect->hide();
 779                         free_selection_rects.front()->start_trim->hide();
 780                         free_selection_rects.front()->end_trim->hide();
 781                 }
 782                 selection_group->hide();
 783         }
 784
 785         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 786                 (*i)->hide_selection ();
 787         }
 788 }
 789
 790 void
 791 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 792 {
 793         /* find the selection rect this is for. we have the item corresponding to one
 794            of the trim handles.
 795          */
 796
 797         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 798                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 799
 800                         /* make one trim handle be "above" the other so that if they overlap,
 801                            the top one is the one last used.
 802                         */
 803
 804                         (*i)->rect->raise_to_top ();
 805                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 806                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 807
 808                         break;
 809                 }
 810         }
 811 }
 812
 813 SelectionRect *
 814 TimeAxisView::get_selection_rect (uint32_t id)
 815 {
 816         SelectionRect *rect;
 817
 818         /* check to see if we already have a visible rect for this particular selection ID */
 819
 820         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 821                 if ((*i)->id == id) {
 822                         return (*i);
 823                 }
 824         }
 825
 826         /* ditto for the free rect list */
 827
 828         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 829                 if ((*i)->id == id) {
 830                         SelectionRect* ret = (*i);
 831                         free_selection_rects.erase (i);
 832                         return ret;
 833                 }
 834         }
 835
 836         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 837
 838         if (free_selection_rects.empty()) {
 839
 840                 rect = new SelectionRect;
 841
 842                 rect->rect = new SimpleRect (*selection_group);
 843                 rect->rect->property_outline_what() = 0x0;
 844                 rect->rect->property_x1() = 0.0;
 845                 rect->rect->property_y1() = 0.0;
 846                 rect->rect->property_x2() = 0.0;
 847                 rect->rect->property_y2() = 0.0;
 848                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 849
 850                 rect->start_trim = new SimpleRect (*selection_group);
 851                 rect->start_trim->property_outline_what() = 0x0;
 852                 rect->start_trim->property_x1() = 0.0;
 853                 rect->start_trim->property_x2() = 0.0;
 854
 855                 rect->end_trim = new SimpleRect (*selection_group);
 856                 rect->end_trim->property_outline_what() = 0x0;
 857                 rect->end_trim->property_x1() = 0.0;
 858                 rect->end_trim->property_x2() = 0.0;
 859
 860                 free_selection_rects.push_front (rect);
 861
 862                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 863                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 864                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 865         }
 866
 867         rect = free_selection_rects.front();
 868         rect->id = id;
 869         free_selection_rects.pop_front();
 870         return rect;
 871 }
 872
 873 struct null_deleter { void operator()(void const *) const {} };
 874
 875 bool
 876 TimeAxisView::is_child (TimeAxisView* tav)
 877 {
 878         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 879 }
 880
 881 void
 882 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 883 {
 884         children.push_back (child);
 885 }
 886
 887 void
 888 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 889 {
 890         Children::iterator i;
 891
 892         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 893                 children.erase (i);
 894         }
 895 }
 896
 897 /** Get selectable things within a given range.
 898  *  @param start Start time in session frames.
 899  *  @param end End time in session frames.
 900  *  @param top Top y range, in trackview coordinates (ie 0 is the top of the track view)
 901  *  @param bot Bottom y range, in trackview coordinates (ie 0 is the top of the track view)
 902  *  @param result Filled in with selectable things.
 903  */
 904 void
 905 TimeAxisView::get_selectables (framepos_t /*start*/, framepos_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 906 {
 907         return;
 908 }
 909
 910 void
 911 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 912 {
 913         return;
 914 }
 915
 916 void
 917 TimeAxisView::add_ghost (RegionView* rv)
 918 {
 919         GhostRegion* gr = rv->add_ghost (*this);
 920
 921         if(gr) {
 922                 ghosts.push_back(gr);
 923         }
 924 }
 925
 926 void
 927 TimeAxisView::remove_ghost (RegionView* rv)
 928 {
 929         rv->remove_ghost_in (*this);
 930 }
 931
 932 void
 933 TimeAxisView::erase_ghost (GhostRegion* gr)
 934 {
 935         if (in_destructor) {
 936                 return;
 937         }
 938
 939         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 940                 if ((*i) == gr) {
 941                         ghosts.erase (i);
 942                         break;
 943                 }
 944         }
 945 }
 946
 947 bool
 948 TimeAxisView::touched (double top, double bot)
 949 {
 950         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 951           y_position is the "origin" or "top" of the track.
 952         */
 953
 954         double mybot = _y_position + current_height();
 955
 956         return ((_y_position <= bot && _y_position >= top) ||
 957                 ((mybot <= bot) && (top < mybot)) ||
 958                 (mybot >= bot && _y_position < top));
 959 }
 960
 961 void
 962 TimeAxisView::set_parent (TimeAxisView& p)
 963 {
 964         parent = &p;
 965 }
 966
 967 bool
 968 TimeAxisView::has_state () const
 969 {
 970         return _has_state;
 971 }
 972
 973 TimeAxisView*
 974 TimeAxisView::get_parent_with_state ()
 975 {
 976         if (parent == 0) {
 977                 return 0;
 978         }
 979
 980         if (parent->has_state()) {
 981                 return parent;
 982         }
 983
 984         return parent->get_parent_with_state ();
 985 }
 986
 987
 988 XMLNode&
 989 TimeAxisView::get_state ()
 990 {
 991         /* XXX: is this method used? */
 992
 993         XMLNode* node = new XMLNode ("TAV-" + name());
 994         char buf[32];
 995
 996         snprintf (buf, sizeof(buf), "%u", height);
 997         node->add_property ("height", buf);
 998         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
 999         return *node;
1000 }
1001
1002 int
1003 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1004 {
1005         const XMLProperty *prop;
1006
1007         /* XXX: I think this might be vestigial */
1008         if ((prop = node.property ("marked-for-display")) != 0) {
1009                 _marked_for_display = (prop->value() == "1");
1010         }
1011
1012         if ((prop = node.property ("shown-editor")) != 0) {
1013                 _marked_for_display = string_is_affirmative (prop->value ());
1014         }
1015
1016         if ((prop = node.property ("track-height")) != 0) {
1017
1018                 if (prop->value() == "largest") {
1019                         set_height (HeightLargest);
1020                 } else if (prop->value() == "large") {
1021                         set_height (HeightLarge);
1022                 } else if (prop->value() == "larger") {
1023                         set_height (HeightLarger);
1024                 } else if (prop->value() == "normal") {
1025                         set_height (HeightNormal);
1026                 } else if (prop->value() == "smaller") {
1027                         set_height (HeightSmaller);
1028                 } else if (prop->value() == "small") {
1029                         set_height (HeightSmall);
1030                 } else {
1031                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1032                         set_height (HeightNormal);
1033                 }
1034
1035         } else if ((prop = node.property ("height")) != 0) {
1036
1037                 set_height (atoi (prop->value()));
1038
1039         } else {
1040
1041                 set_height (HeightNormal);
1042         }
1043
1044         return 0;
1045 }
1046
1047 void
1048 TimeAxisView::reset_height()
1049 {
1050         set_height (height);
1051
1052         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1053                 (*i)->set_height ((*i)->height);
1054         }
1055 }
1056
1057 void
1058 TimeAxisView::compute_heights ()
1059 {
1060         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1061         Gtk::Table two_row_table (2, 8);
1062         Gtk::Table one_row_table (1, 8);
1063         Button* buttons[5];
1064         const int border_width = 2;
1065         extra_height = (2 * border_width)
1066                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1067                 + 6; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1068
1069         window.add (one_row_table);
1070
1071         one_row_table.set_border_width (border_width);
1072         one_row_table.set_row_spacings (0);
1073         one_row_table.set_col_spacings (0);
1074         one_row_table.set_homogeneous (true);
1075
1076         two_row_table.set_border_width (border_width);
1077         two_row_table.set_row_spacings (0);
1078         two_row_table.set_col_spacings (0);
1079         two_row_table.set_homogeneous (true);
1080
1081         for (int i = 0; i < 5; ++i) {
1082                 buttons[i] = manage (new Button (X_("f")));
1083                 buttons[i]->set_name ("TrackMuteButton");
1084         }
1085
1086         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1087
1088         one_row_table.show_all ();
1089         Gtk::Requisition req(one_row_table.size_request ());
1090
1091         // height required to show 1 row of buttons
1092
1093         smaller_height = req.height + extra_height;
1094 }
1095
1096 void
1097 TimeAxisView::show_name_label ()
1098 {
1099         if (!(name_packing & NameLabelPacked)) {
1100                 name_hbox.pack_start (name_label, true, true);
1101                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1102                 name_hbox.show ();
1103                 name_label.show ();
1104         }
1105 }
1106
1107 void
1108 TimeAxisView::show_name_entry ()
1109 {
1110         if (!(name_packing & NameEntryPacked)) {
1111                 name_hbox.pack_start (name_entry, true, true);
1112                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1113                 name_hbox.show ();
1114                 name_entry.show ();
1115         }
1116 }
1117
1118 void
1119 TimeAxisView::hide_name_label ()
1120 {
1121         if (name_packing & NameLabelPacked) {
1122                 name_hbox.remove (name_label);
1123                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1124         }
1125 }
1126
1127 void
1128 TimeAxisView::hide_name_entry ()
1129 {
1130         if (name_packing & NameEntryPacked) {
1131                 name_hbox.remove (name_entry);
1132                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1133         }
1134 }
1135
1136 void
1137 TimeAxisView::color_handler ()
1138 {
1139         for (list<GhostRegion*>::iterator i=ghosts.begin(); i != ghosts.end(); i++ ) {
1140                 (*i)->set_colors();
1141         }
1142
1143         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1144
1145                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1146                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1147
1148                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1149                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1150
1151                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1152                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1153         }
1154
1155         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1156
1157                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1158                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1159
1160                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1161                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1162
1163                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1164                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1165         }
1166 }
1167
1168 /** @return Pair: TimeAxisView, layer index.
1169  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1170  * If the covering object is a child axis, then the child is returned.
1171  * TimeAxisView is 0 otherwise.
1172  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1173  * region display mode, otherwise 0.
1174  */
1175 std::pair<TimeAxisView*, layer_t>
1176 TimeAxisView::covers_y_position (double y)
1177 {
1178         if (hidden()) {
1179                 return std::make_pair ( (TimeAxisView *) 0, 0);
1180         }
1181
1182         if (_y_position <= y && y < (_y_position + height)) {
1183
1184                 /* work out the layer index if appropriate */
1185                 layer_t l = 0;
1186                 if (layer_display () == Stacked && view ()) {
1187                         /* compute layer */
1188                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1189                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1190                           returns a too-high value */
1191                         if (l >= view()->layers ()) {
1192                                 l = view()->layers() - 1;
1193                         }
1194                 }
1195
1196                 return std::make_pair (this, l);
1197         }
1198
1199         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1200
1201                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1202                 if (r.first) {
1203                         return r;
1204                 }
1205         }
1206
1207         return std::make_pair ( (TimeAxisView *) 0, 0);
1208 }
1209
1210 bool
1211 TimeAxisView::resizer_button_press (GdkEventButton* event)
1212 {
1213         _resize_drag_start = event->y_root;
1214         return true;
1215 }
1216
1217 bool
1218 TimeAxisView::resizer_button_release (GdkEventButton*)
1219 {
1220         _editor.stop_canvas_autoscroll ();
1221         _resize_drag_start = -1;
1222         return true;
1223 }
1224
1225 void
1226 TimeAxisView::idle_resize (uint32_t h)
1227 {
1228         set_height (h);
1229 }
1230
1231 bool
1232 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1233 {
1234         if (_resize_drag_start >= 0) {
1235                 /* (ab)use the DragManager to do autoscrolling; adjust the event coordinates
1236                    into the world coordinate space that DragManager::motion_handler is expecting,
1237                    and then fake a DragManager motion event so that when maybe_autoscroll
1238                    asks DragManager for the current pointer position it will get the correct
1239                    answers.
1240                 */
1241                 int tx, ty;
1242                 resizer.translate_coordinates (*control_parent, ev->x, ev->y, tx, ty);
1243                 ev->y = ty - _editor.get_trackview_group_vertical_offset();
1244                 _editor.drags()->motion_handler ((GdkEvent *) ev, false);
1245                 _editor.maybe_autoscroll (false, true);
1246
1247                 /* now do the actual TAV resize */
1248                 int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1249                 _editor.add_to_idle_resize (this, delta);
1250                 _resize_drag_start = ev->y_root;
1251         }
1252
1253         return true;
1254 }
1255
1256 bool
1257 TimeAxisView::resizer_expose (GdkEventExpose* event)
1258 {
1259         int w, h, x, y, d;
1260         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1261         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1262         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1263
1264         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1265                         true,
1266                         event->area.x,
1267                         event->area.y,
1268                         event->area.width,
1269                         event->area.height);
1270
1271         win->get_geometry (x, y, w, h, d);
1272
1273         /* handle/line #1 */
1274
1275         win->draw_line (dark, 0, 0, w - 2, 0);
1276         win->draw_point (dark, 0, 1);
1277         win->draw_line (light, 1, 1, w - 1, 1);
1278         win->draw_point (light, w - 1, 0);
1279
1280         /* handle/line #2 */
1281
1282         win->draw_line (dark, 0, 4, w - 2, 4);
1283         win->draw_point (dark, 0, 5);
1284         win->draw_line (light, 1, 5, w - 1, 5);
1285         win->draw_point (light, w - 1, 4);
1286
1287         /* use vertical resize mouse cursor */
1288         win->set_cursor(Gdk::Cursor(Gdk::SB_V_DOUBLE_ARROW));
1289
1290         return true;
1291 }
1292
1293 bool
1294 TimeAxisView::set_visibility (bool yn)
1295 {
1296         if (yn != marked_for_display()) {
1297                 if (yn) {
1298                         set_marked_for_display (true);
1299                         canvas_display()->show();
1300                 } else {
1301                         set_marked_for_display (false);
1302                         hide ();
1303                 }
1304                 return true; // things changed
1305         }
1306
1307         return false;
1308 }
1309
1310 uint32_t
1311 TimeAxisView::preset_height (Height h)
1312 {
1313         switch (h) {
1314         case HeightLargest:
1315                 return extra_height + 48 + 250;
1316         case HeightLarger:
1317                 return extra_height + 48 + 150;
1318         case HeightLarge:
1319                 return extra_height + 48 + 50;
1320         case HeightNormal:
1321                 return extra_height + 48;
1322         case HeightSmall:
1323                 return 27;
1324         case HeightSmaller:
1325                 return smaller_height;
1326         }
1327
1328         /* NOTREACHED */
1329         return 0;
1330 }
1331
1332 /** @return Child time axis views that are not hidden */
1333 TimeAxisView::Children
1334 TimeAxisView::get_child_list ()
1335 {
1336         Children c;
1337
1338         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1339                 if (!(*i)->hidden()) {
1340                         c.push_back(*i);
1341                 }
1342         }
1343
1344         return c;
1345 }
1346
1347