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         , _size_menu (0)
  79         , _y_position (0)
  80         , _editor (ed)
  81         , _order (0)
  82 {
  83         if (extra_height == 0) {
  84                 compute_heights ();
  85         }
  86
  87         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  88         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  89         _canvas_display->hide(); // reveal as needed
  90
  91         selection_group = new Group (*_canvas_display);
  92         selection_group->set_data (X_("timeselection"), (void *) 1);
  93         selection_group->hide();
  94
  95         _ghost_group = new Group (*_canvas_display);
  96         _ghost_group->lower_to_bottom();
  97         _ghost_group->show();
  98
  99         control_parent = 0;
 100         display_menu = 0;
 101         _hidden = false;
 102         in_destructor = false;
 103         height = 0;
 104         _effective_height = 0;
 105         parent = rent;
 106         _has_state = false;
 107         last_name_entry_key_press_event = 0;
 108         name_packing = NamePackingBits (0);
 109         _resize_drag_start = -1;
 110
 111         /*
 112           Create the standard LHS Controls
 113           We create the top-level container and name add the name label here,
 114           subclasses can add to the layout as required
 115         */
 116
 117         name_entry.set_name ("EditorTrackNameDisplay");
 118         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 119         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 120         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 121         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 122         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 123         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 124         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 125
 126         name_label.set_name ("TrackLabel");
 127         name_label.set_alignment (0.0, 0.5);
 128
 129         /* typically, either name_label OR name_entry are visible,
 130            but not both. its up to derived classes to show/hide them as they
 131            wish.
 132         */
 133
 134         name_hbox.show ();
 135
 136         controls_table.set_size_request (200);
 137         controls_table.set_border_width (2);
 138         controls_table.set_row_spacings (0);
 139         controls_table.set_col_spacings (0);
 140         controls_table.set_homogeneous (true);
 141
 142         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 143         controls_table.show_all ();
 144         controls_table.set_no_show_all ();
 145
 146         resizer.set_size_request (10, 6);
 147         resizer.set_name ("ResizeHandle");
 148         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 149         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 150         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 151         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 152
 153         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 154                         Gdk::BUTTON_RELEASE_MASK|
 155                         Gdk::POINTER_MOTION_MASK|
 156                         Gdk::SCROLL_MASK);
 157
 158         resizer_box.pack_start (resizer, false, false);
 159         resizer.show ();
 160         resizer_box.show();
 161
 162         HSeparator* separator = manage (new HSeparator());
 163
 164         controls_vbox.pack_start (controls_table, false, false);
 165         controls_vbox.pack_end (resizer_box, false, false);
 166         controls_vbox.show ();
 167
 168         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 169         controls_ebox.add (controls_vbox);
 170         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 171         controls_ebox.set_flags (CAN_FOCUS);
 172
 173         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 174         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 175
 176         controls_hbox.pack_start (controls_ebox, false, false);
 177         controls_hbox.show ();
 178
 179         time_axis_vbox.pack_start (controls_hbox, true, true);
 180         time_axis_vbox.pack_end (*separator, false, false);
 181         time_axis_vbox.show();
 182
 183         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 184
 185         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 186 }
 187
 188 TimeAxisView::~TimeAxisView()
 189 {
 190         in_destructor = true;
 191
 192         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 193                 delete *i;
 194         }
 195
 196         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 197                 delete (*i)->rect;
 198                 delete (*i)->start_trim;
 199                 delete (*i)->end_trim;
 200
 201         }
 202
 203         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 204                 delete (*i)->rect;
 205                 delete (*i)->start_trim;
 206                 delete (*i)->end_trim;
 207         }
 208
 209         delete selection_group;
 210         selection_group = 0;
 211
 212         delete _canvas_background;
 213         _canvas_background = 0;
 214
 215         delete _canvas_display;
 216         _canvas_display = 0;
 217
 218         delete display_menu;
 219         display_menu = 0;
 220
 221         delete _size_menu;
 222 }
 223
 224 /** Display this TimeAxisView as the nth component of the parent box, at y.
 225 *
 226 * @param y y position.
 227 * @param nth index for this TimeAxisView, increased if this view has children.
 228 * @param parent parent component.
 229 * @return height of this TimeAxisView.
 230 */
 231 guint32
 232 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 233 {
 234         if (control_parent) {
 235                 control_parent->reorder_child (time_axis_vbox, nth);
 236         } else {
 237                 control_parent = parent;
 238                 parent->pack_start (time_axis_vbox, false, false);
 239                 parent->reorder_child (time_axis_vbox, nth);
 240         }
 241
 242         _order = nth;
 243
 244         if (_y_position != y) {
 245                 _canvas_display->property_y () = y;
 246                 _canvas_background->property_y () = y;
 247                 /* silly canvas */
 248                 _canvas_display->move (0.0, 0.0);
 249                 _canvas_background->move (0.0, 0.0);
 250                 _y_position = y;
 251
 252         }
 253
 254         _canvas_background->raise_to_top ();
 255         _canvas_display->raise_to_top ();
 256
 257         if (_marked_for_display) {
 258                 time_axis_vbox.show ();
 259                 controls_ebox.show ();
 260                 _canvas_background->show ();
 261         }
 262
 263         _hidden = false;
 264
 265         _effective_height = current_height ();
 266
 267         /* now show children */
 268
 269         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 270                 if (canvas_item_visible ((*i)->_canvas_display)) {
 271                         ++nth;
 272                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 273                 }
 274         }
 275
 276         return _effective_height;
 277 }
 278
 279 void
 280 TimeAxisView::clip_to_viewport ()
 281 {
 282         if (_marked_for_display) {
 283                 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()) {
 284                         _canvas_background->hide ();
 285                         _canvas_display->hide ();
 286                         return;
 287                 }
 288                 _canvas_background->show ();
 289                 _canvas_display->show ();
 290         }
 291         return;
 292 }
 293
 294 bool
 295 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 296 {
 297         if (Keyboard::some_magic_widget_has_focus()) {
 298                 return false;
 299         }
 300
 301         switch (ev->direction) {
 302         case GDK_SCROLL_UP:
 303                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 304                         step_height (false);
 305                         return true;
 306                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 307                         _editor.scroll_tracks_up_line();
 308                         return true;
 309                 }
 310                 break;
 311
 312         case GDK_SCROLL_DOWN:
 313                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 314                         step_height (true);
 315                         return true;
 316                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 317                         _editor.scroll_tracks_down_line();
 318                         return true;
 319                 }
 320                 break;
 321
 322         default:
 323                 /* no handling for left/right, yet */
 324                 break;
 325         }
 326
 327         return false;
 328 }
 329
 330 bool
 331 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 332 {
 333         switch (ev->button) {
 334         case 1:
 335                 selection_click (ev);
 336                 break;
 337
 338         case 3:
 339                 popup_display_menu (ev->time);
 340                 break;
 341         }
 342
 343         return true;
 344 }
 345
 346 void
 347 TimeAxisView::selection_click (GdkEventButton* ev)
 348 {
 349         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 350         _editor.set_selected_track (*this, op, false);
 351 }
 352
 353 void
 354 TimeAxisView::hide ()
 355 {
 356         if (_hidden) {
 357                 return;
 358         }
 359
 360         _canvas_display->hide ();
 361         _canvas_background->hide ();
 362
 363         if (control_parent) {
 364                 control_parent->remove (time_axis_vbox);
 365                 control_parent = 0;
 366         }
 367
 368         _y_position = -1;
 369         _hidden = true;
 370
 371         /* now hide children */
 372
 373         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 374                 (*i)->hide ();
 375         }
 376
 377         /* if its hidden, it cannot be selected */
 378         _editor.get_selection().remove (this);
 379         /* and neither can its regions */
 380         _editor.get_selection().remove_regions (this);
 381
 382         Hiding ();
 383 }
 384
 385 /** Steps through the defined heights for this TrackView.
 386  *  @param coarser true if stepping should decrease in size, otherwise false.
 387  */
 388 void
 389 TimeAxisView::step_height (bool coarser)
 390 {
 391         static const uint32_t step = 25;
 392
 393         if (coarser) {
 394
 395                 if (height == preset_height (HeightSmall)) {
 396                         return;
 397                 }
 398
 399                 if (height <= preset_height (HeightSmaller) && height > preset_height (HeightSmall)) {
 400                         set_height_enum (HeightSmall);
 401                 } else if (height <= preset_height (HeightNormal) && height > preset_height (HeightSmaller)) {
 402                         set_height_enum (HeightSmaller);
 403                 } else {
 404                         set_height (height - step);
 405                 }
 406
 407         } else {
 408
 409                 if (height == preset_height(HeightSmall)) {
 410                         set_height_enum (HeightSmaller);
 411                 } else if (height == preset_height(HeightSmaller)) {
 412                         set_height_enum (HeightNormal);
 413                 } else {
 414                         set_height (height + step);
 415                 }
 416
 417         }
 418 }
 419
 420 void
 421 TimeAxisView::set_heights (uint32_t h)
 422 {
 423         TrackSelection& ts (_editor.get_selection().tracks);
 424
 425         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 426                 (*i)->set_height (h);
 427         }
 428 }
 429
 430 void
 431 TimeAxisView::set_height_enum (Height h)
 432 {
 433         set_height (preset_height (h));
 434 }
 435
 436 void
 437 TimeAxisView::set_height (uint32_t h)
 438 {
 439         if (h < preset_height (HeightSmall)) {
 440                 h = preset_height (HeightSmall);
 441         }
 442
 443         time_axis_vbox.property_height_request () = h;
 444         height = h;
 445
 446         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 447                 (*i)->set_height ();
 448         }
 449
 450         if (canvas_item_visible (selection_group)) {
 451                 /* resize the selection rect */
 452                 show_selection (_editor.get_selection().time);
 453         }
 454 }
 455
 456 bool
 457 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 458 {
 459         TrackViewList::iterator i;
 460
 461         switch (ev->keyval) {
 462         case GDK_Escape:
 463                 name_entry.select_region (0,0);
 464                 controls_ebox.grab_focus ();
 465                 name_entry_changed ();
 466                 return true;
 467
 468         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 469          * generates a different ev->keyval, rather than setting
 470          * ev->state.
 471          */
 472         case GDK_ISO_Left_Tab:
 473         case GDK_Tab:
 474         {
 475                 name_entry_changed ();
 476                 TrackViewList const & allviews = _editor.get_track_views ();
 477                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 478                 if (ev->keyval == GDK_Tab) {
 479                         if (i != allviews.end()) {
 480                                 do {
 481                                         if (++i == allviews.end()) {
 482                                                 return true;
 483                                         }
 484                                 } while((*i)->hidden());
 485                         }
 486                 } else {
 487                         if (i != allviews.begin()) {
 488                                 do {
 489                                         if (i == allviews.begin()) {
 490                                                 return true;
 491                                         }
 492                                         --i;
 493                                 } while ((*i)->hidden());
 494                         }
 495                 }
 496
 497
 498                 /* resize to show editable name display */
 499
 500                 if ((*i)->current_height() <= preset_height (HeightSmaller)) {
 501                         (*i)->set_height_enum (HeightSmaller);
 502                 }
 503
 504                 (*i)->name_entry.grab_focus();
 505         }
 506         return true;
 507
 508         case GDK_Up:
 509         case GDK_Down:
 510                 name_entry_changed ();
 511                 return true;
 512
 513         default:
 514                 break;
 515         }
 516
 517 #ifdef TIMEOUT_NAME_EDIT
 518         /* adapt the timeout to reflect the user's typing speed */
 519
 520         guint32 name_entry_timeout;
 521
 522         if (last_name_entry_key_press_event) {
 523                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 524                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 525         } else {
 526                 /* start with a 1 second timeout */
 527                 name_entry_timeout = 1000;
 528         }
 529
 530         last_name_entry_key_press_event = ev->time;
 531
 532         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 533
 534         name_entry_key_timeout.disconnect();
 535         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 536 #endif
 537
 538         return false;
 539 }
 540
 541 bool
 542 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 543 {
 544         name_entry.select_region (0, -1);
 545         name_entry.set_name ("EditorActiveTrackNameDisplay");
 546         return false;
 547 }
 548
 549 bool
 550 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 551 {
 552         /* clean up */
 553
 554         last_name_entry_key_press_event = 0;
 555         name_entry_key_timeout.disconnect ();
 556         name_entry.set_name ("EditorTrackNameDisplay");
 557         name_entry.select_region (0,0);
 558
 559         /* do the real stuff */
 560
 561         name_entry_changed ();
 562
 563         return false;
 564 }
 565
 566 bool
 567 TimeAxisView::name_entry_key_timed_out ()
 568 {
 569         name_entry_activated();
 570         return false;
 571 }
 572
 573 void
 574 TimeAxisView::name_entry_activated ()
 575 {
 576         controls_ebox.grab_focus();
 577 }
 578
 579 void
 580 TimeAxisView::name_entry_changed ()
 581 {
 582 }
 583
 584 bool
 585 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 586 {
 587         if (ev->button == 3) {
 588                 return true;
 589         }
 590         return false;
 591 }
 592
 593 bool
 594 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 595 {
 596         if (ev->button == 3) {
 597                 popup_display_menu (ev->time);
 598                 return true;
 599         }
 600         return false;
 601 }
 602
 603 void
 604 TimeAxisView::conditionally_add_to_selection ()
 605 {
 606         Selection& s (_editor.get_selection ());
 607
 608         if (!s.selected (this)) {
 609                 _editor.set_selected_track (*this, Selection::Set);
 610         }
 611 }
 612
 613 void
 614 TimeAxisView::popup_display_menu (guint32 when)
 615 {
 616         if (display_menu == 0) {
 617                 build_display_menu ();
 618         }
 619
 620         conditionally_add_to_selection ();
 621         display_menu->popup (1, when);
 622 }
 623
 624 void
 625 TimeAxisView::set_selected (bool yn)
 626 {
 627         if (yn == _selected) {
 628                 return;
 629         }
 630
 631         Selectable::set_selected (yn);
 632
 633         if (_selected) {
 634                 controls_ebox.set_name (controls_base_selected_name);
 635                 time_axis_vbox.set_name (controls_base_selected_name);
 636                 controls_vbox.set_name (controls_base_selected_name);
 637         } else {
 638                 controls_ebox.set_name (controls_base_unselected_name);
 639                 time_axis_vbox.set_name (controls_base_unselected_name);
 640                 controls_vbox.set_name (controls_base_unselected_name);
 641                 hide_selection ();
 642
 643                 /* children will be set for the yn=true case. but when deselecting
 644                    the editor only has a list of top-level trackviews, so we
 645                    have to do this here.
 646                 */
 647
 648                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 649                         (*i)->set_selected (false);
 650                 }
 651         }
 652
 653         resizer.queue_draw ();
 654 }
 655
 656 void
 657 TimeAxisView::build_display_menu ()
 658 {
 659         using namespace Menu_Helpers;
 660
 661         delete display_menu;
 662
 663         display_menu = new Menu;
 664         display_menu->set_name ("ArdourContextMenu");
 665
 666         // Just let implementing classes define what goes into the manu
 667 }
 668
 669 void
 670 TimeAxisView::set_samples_per_unit (double spu)
 671 {
 672         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 673                 (*i)->set_samples_per_unit (spu);
 674         }
 675
 676         AnalysisFeatureList::const_iterator i;
 677         list<ArdourCanvas::SimpleLine*>::iterator l;
 678 }
 679
 680 void
 681 TimeAxisView::show_timestretch (framepos_t start, framepos_t end)
 682 {
 683         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 684                 (*i)->show_timestretch (start, end);
 685         }
 686 }
 687
 688 void
 689 TimeAxisView::hide_timestretch ()
 690 {
 691         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 692                 (*i)->hide_timestretch ();
 693         }
 694 }
 695
 696 void
 697 TimeAxisView::show_selection (TimeSelection& ts)
 698 {
 699         double x1;
 700         double x2;
 701         double y2;
 702         SelectionRect *rect;
 703
 704         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 705                 (*i)->show_selection (ts);
 706         }
 707
 708         if (canvas_item_visible (selection_group)) {
 709                 while (!used_selection_rects.empty()) {
 710                         free_selection_rects.push_front (used_selection_rects.front());
 711                         used_selection_rects.pop_front();
 712                         free_selection_rects.front()->rect->hide();
 713                         free_selection_rects.front()->start_trim->hide();
 714                         free_selection_rects.front()->end_trim->hide();
 715                 }
 716                 selection_group->hide();
 717         }
 718
 719         selection_group->show();
 720         selection_group->raise_to_top();
 721
 722         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 723                 framepos_t start, end;
 724                 framecnt_t cnt;
 725
 726                 start = (*i).start;
 727                 end = (*i).end;
 728                 cnt = end - start + 1;
 729
 730                 rect = get_selection_rect ((*i).id);
 731
 732                 x1 = _editor.frame_to_unit (start);
 733                 x2 = _editor.frame_to_unit (start + cnt - 1);
 734                 y2 = current_height();
 735
 736                 rect->rect->property_x1() = x1;
 737                 rect->rect->property_y1() = 1.0;
 738                 rect->rect->property_x2() = x2;
 739                 rect->rect->property_y2() = y2;
 740
 741                 // trim boxes are at the top for selections
 742
 743                 if (x2 > x1) {
 744                         rect->start_trim->property_x1() = x1;
 745                         rect->start_trim->property_y1() = 1.0;
 746                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 747                         rect->start_trim->property_y2() = y2;
 748
 749                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 750                         rect->end_trim->property_y1() = 1.0;
 751                         rect->end_trim->property_x2() = x2;
 752                         rect->end_trim->property_y2() = y2;
 753
 754                         rect->start_trim->show();
 755                         rect->end_trim->show();
 756                 } else {
 757                         rect->start_trim->hide();
 758                         rect->end_trim->hide();
 759                 }
 760
 761                 rect->rect->show ();
 762                 used_selection_rects.push_back (rect);
 763         }
 764 }
 765
 766 void
 767 TimeAxisView::reshow_selection (TimeSelection& ts)
 768 {
 769         show_selection (ts);
 770
 771         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 772                 (*i)->show_selection (ts);
 773         }
 774 }
 775
 776 void
 777 TimeAxisView::hide_selection ()
 778 {
 779         if (canvas_item_visible (selection_group)) {
 780                 while (!used_selection_rects.empty()) {
 781                         free_selection_rects.push_front (used_selection_rects.front());
 782                         used_selection_rects.pop_front();
 783                         free_selection_rects.front()->rect->hide();
 784                         free_selection_rects.front()->start_trim->hide();
 785                         free_selection_rects.front()->end_trim->hide();
 786                 }
 787                 selection_group->hide();
 788         }
 789
 790         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 791                 (*i)->hide_selection ();
 792         }
 793 }
 794
 795 void
 796 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 797 {
 798         /* find the selection rect this is for. we have the item corresponding to one
 799            of the trim handles.
 800          */
 801
 802         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 803                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 804
 805                         /* make one trim handle be "above" the other so that if they overlap,
 806                            the top one is the one last used.
 807                         */
 808
 809                         (*i)->rect->raise_to_top ();
 810                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 811                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 812
 813                         break;
 814                 }
 815         }
 816 }
 817
 818 SelectionRect *
 819 TimeAxisView::get_selection_rect (uint32_t id)
 820 {
 821         SelectionRect *rect;
 822
 823         /* check to see if we already have a visible rect for this particular selection ID */
 824
 825         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 826                 if ((*i)->id == id) {
 827                         return (*i);
 828                 }
 829         }
 830
 831         /* ditto for the free rect list */
 832
 833         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 834                 if ((*i)->id == id) {
 835                         SelectionRect* ret = (*i);
 836                         free_selection_rects.erase (i);
 837                         return ret;
 838                 }
 839         }
 840
 841         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 842
 843         if (free_selection_rects.empty()) {
 844
 845                 rect = new SelectionRect;
 846
 847                 rect->rect = new SimpleRect (*selection_group);
 848                 rect->rect->property_outline_what() = 0x0;
 849                 rect->rect->property_x1() = 0.0;
 850                 rect->rect->property_y1() = 0.0;
 851                 rect->rect->property_x2() = 0.0;
 852                 rect->rect->property_y2() = 0.0;
 853                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 854
 855                 rect->start_trim = new SimpleRect (*selection_group);
 856                 rect->start_trim->property_outline_what() = 0x0;
 857                 rect->start_trim->property_x1() = 0.0;
 858                 rect->start_trim->property_x2() = 0.0;
 859
 860                 rect->end_trim = new SimpleRect (*selection_group);
 861                 rect->end_trim->property_outline_what() = 0x0;
 862                 rect->end_trim->property_x1() = 0.0;
 863                 rect->end_trim->property_x2() = 0.0;
 864
 865                 free_selection_rects.push_front (rect);
 866
 867                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 868                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 869                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 870         }
 871
 872         rect = free_selection_rects.front();
 873         rect->id = id;
 874         free_selection_rects.pop_front();
 875         return rect;
 876 }
 877
 878 struct null_deleter { void operator()(void const *) const {} };
 879
 880 bool
 881 TimeAxisView::is_child (TimeAxisView* tav)
 882 {
 883         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 884 }
 885
 886 void
 887 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 888 {
 889         children.push_back (child);
 890 }
 891
 892 void
 893 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 894 {
 895         Children::iterator i;
 896
 897         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 898                 children.erase (i);
 899         }
 900 }
 901
 902 /** Get selectable things within a given range.
 903  *  @param start Start time in session frames.
 904  *  @param end End time in session frames.
 905  *  @param top Top y range, in trackview coordinates (ie 0 is the top of the track view)
 906  *  @param bot Bottom y range, in trackview coordinates (ie 0 is the top of the track view)
 907  *  @param result Filled in with selectable things.
 908  */
 909 void
 910 TimeAxisView::get_selectables (framepos_t /*start*/, framepos_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 911 {
 912         return;
 913 }
 914
 915 void
 916 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 917 {
 918         return;
 919 }
 920
 921 void
 922 TimeAxisView::add_ghost (RegionView* rv)
 923 {
 924         GhostRegion* gr = rv->add_ghost (*this);
 925
 926         if (gr) {
 927                 ghosts.push_back(gr);
 928         }
 929 }
 930
 931 void
 932 TimeAxisView::remove_ghost (RegionView* rv)
 933 {
 934         rv->remove_ghost_in (*this);
 935 }
 936
 937 void
 938 TimeAxisView::erase_ghost (GhostRegion* gr)
 939 {
 940         if (in_destructor) {
 941                 return;
 942         }
 943
 944         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 945                 if ((*i) == gr) {
 946                         ghosts.erase (i);
 947                         break;
 948                 }
 949         }
 950 }
 951
 952 bool
 953 TimeAxisView::touched (double top, double bot)
 954 {
 955         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 956           y_position is the "origin" or "top" of the track.
 957         */
 958
 959         double mybot = _y_position + current_height();
 960
 961         return ((_y_position <= bot && _y_position >= top) ||
 962                 ((mybot <= bot) && (top < mybot)) ||
 963                 (mybot >= bot && _y_position < top));
 964 }
 965
 966 void
 967 TimeAxisView::set_parent (TimeAxisView& p)
 968 {
 969         parent = &p;
 970 }
 971
 972 bool
 973 TimeAxisView::has_state () const
 974 {
 975         return _has_state;
 976 }
 977
 978 TimeAxisView*
 979 TimeAxisView::get_parent_with_state ()
 980 {
 981         if (parent == 0) {
 982                 return 0;
 983         }
 984
 985         if (parent->has_state()) {
 986                 return parent;
 987         }
 988
 989         return parent->get_parent_with_state ();
 990 }
 991
 992
 993 XMLNode&
 994 TimeAxisView::get_state ()
 995 {
 996         /* XXX: is this method used? */
 997
 998         XMLNode* node = new XMLNode ("TAV-" + name());
 999         char buf[32];
1000
1001         snprintf (buf, sizeof(buf), "%u", height);
1002         node->add_property ("height", buf);
1003         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
1004         return *node;
1005 }
1006
1007 int
1008 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1009 {
1010         const XMLProperty *prop;
1011
1012         /* XXX: I think this might be vestigial */
1013         if ((prop = node.property ("marked-for-display")) != 0) {
1014                 _marked_for_display = (prop->value() == "1");
1015         }
1016
1017         if ((prop = node.property ("shown-editor")) != 0) {
1018                 _marked_for_display = string_is_affirmative (prop->value ());
1019         }
1020
1021         if ((prop = node.property ("track-height")) != 0) {
1022
1023                 if (prop->value() == "largest") {
1024                         set_height_enum (HeightLargest);
1025                 } else if (prop->value() == "large") {
1026                         set_height_enum (HeightLarge);
1027                 } else if (prop->value() == "larger") {
1028                         set_height_enum (HeightLarger);
1029                 } else if (prop->value() == "normal") {
1030                         set_height_enum (HeightNormal);
1031                 } else if (prop->value() == "smaller") {
1032                         set_height_enum (HeightSmaller);
1033                 } else if (prop->value() == "small") {
1034                         set_height_enum (HeightSmall);
1035                 } else {
1036                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1037                         set_height_enum (HeightNormal);
1038                 }
1039
1040         } else if ((prop = node.property ("height")) != 0) {
1041
1042                 set_height (atoi (prop->value()));
1043
1044         } else {
1045
1046                 set_height_enum (HeightNormal);
1047         }
1048
1049         return 0;
1050 }
1051
1052 void
1053 TimeAxisView::reset_height ()
1054 {
1055         set_height (height);
1056
1057         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1058                 (*i)->set_height ((*i)->height);
1059         }
1060 }
1061
1062 void
1063 TimeAxisView::compute_heights ()
1064 {
1065         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1066         Gtk::Table two_row_table (2, 8);
1067         Gtk::Table one_row_table (1, 8);
1068         Button* buttons[5];
1069         const int border_width = 2;
1070         extra_height = (2 * border_width)
1071                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1072                 + 6; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1073
1074         window.add (one_row_table);
1075
1076         one_row_table.set_border_width (border_width);
1077         one_row_table.set_row_spacings (0);
1078         one_row_table.set_col_spacings (0);
1079         one_row_table.set_homogeneous (true);
1080
1081         two_row_table.set_border_width (border_width);
1082         two_row_table.set_row_spacings (0);
1083         two_row_table.set_col_spacings (0);
1084         two_row_table.set_homogeneous (true);
1085
1086         for (int i = 0; i < 5; ++i) {
1087                 buttons[i] = manage (new Button (X_("f")));
1088                 buttons[i]->set_name ("TrackMuteButton");
1089         }
1090
1091         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1092
1093         one_row_table.show_all ();
1094         Gtk::Requisition req(one_row_table.size_request ());
1095
1096         // height required to show 1 row of buttons
1097
1098         smaller_height = req.height + extra_height;
1099 }
1100
1101 void
1102 TimeAxisView::show_name_label ()
1103 {
1104         if (!(name_packing & NameLabelPacked)) {
1105                 name_hbox.pack_start (name_label, true, true);
1106                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1107                 name_hbox.show ();
1108                 name_label.show ();
1109         }
1110 }
1111
1112 void
1113 TimeAxisView::show_name_entry ()
1114 {
1115         if (!(name_packing & NameEntryPacked)) {
1116                 name_hbox.pack_start (name_entry, true, true);
1117                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1118                 name_hbox.show ();
1119                 name_entry.show ();
1120         }
1121 }
1122
1123 void
1124 TimeAxisView::hide_name_label ()
1125 {
1126         if (name_packing & NameLabelPacked) {
1127                 name_hbox.remove (name_label);
1128                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1129         }
1130 }
1131
1132 void
1133 TimeAxisView::hide_name_entry ()
1134 {
1135         if (name_packing & NameEntryPacked) {
1136                 name_hbox.remove (name_entry);
1137                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1138         }
1139 }
1140
1141 void
1142 TimeAxisView::color_handler ()
1143 {
1144         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); i++) {
1145                 (*i)->set_colors();
1146         }
1147
1148         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1149
1150                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1151                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1152
1153                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1154                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1155
1156                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1157                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1158         }
1159
1160         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1161
1162                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1163                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1164
1165                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1166                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1167
1168                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1169                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1170         }
1171 }
1172
1173 /** @return Pair: TimeAxisView, layer index.
1174  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1175  * If the covering object is a child axis, then the child is returned.
1176  * TimeAxisView is 0 otherwise.
1177  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1178  * region display mode, otherwise 0.
1179  */
1180 std::pair<TimeAxisView*, layer_t>
1181 TimeAxisView::covers_y_position (double y)
1182 {
1183         if (hidden()) {
1184                 return std::make_pair ((TimeAxisView *) 0, 0);
1185         }
1186
1187         if (_y_position <= y && y < (_y_position + height)) {
1188
1189                 /* work out the layer index if appropriate */
1190                 layer_t l = 0;
1191                 if (layer_display () == Stacked && view ()) {
1192                         /* compute layer */
1193                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1194                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1195                           returns a too-high value */
1196                         if (l >= view()->layers ()) {
1197                                 l = view()->layers() - 1;
1198                         }
1199                 }
1200
1201                 return std::make_pair (this, l);
1202         }
1203
1204         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1205
1206                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1207                 if (r.first) {
1208                         return r;
1209                 }
1210         }
1211
1212         return std::make_pair ((TimeAxisView *) 0, 0);
1213 }
1214
1215 bool
1216 TimeAxisView::resizer_button_press (GdkEventButton* event)
1217 {
1218         _resize_drag_start = event->y_root;
1219         return true;
1220 }
1221
1222 bool
1223 TimeAxisView::resizer_button_release (GdkEventButton*)
1224 {
1225         _editor.stop_canvas_autoscroll ();
1226         _resize_drag_start = -1;
1227         return true;
1228 }
1229
1230 void
1231 TimeAxisView::idle_resize (uint32_t h)
1232 {
1233         set_height (h);
1234 }
1235
1236 bool
1237 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1238 {
1239         if (_resize_drag_start >= 0) {
1240                 /* (ab)use the DragManager to do autoscrolling; adjust the event coordinates
1241                    into the world coordinate space that DragManager::motion_handler is expecting,
1242                    and then fake a DragManager motion event so that when maybe_autoscroll
1243                    asks DragManager for the current pointer position it will get the correct
1244                    answers.
1245                 */
1246                 int tx, ty;
1247                 resizer.translate_coordinates (*control_parent, ev->x, ev->y, tx, ty);
1248                 ev->y = ty - _editor.get_trackview_group_vertical_offset();
1249                 _editor.drags()->motion_handler ((GdkEvent *) ev, false);
1250                 _editor.maybe_autoscroll (false, true);
1251
1252                 /* now do the actual TAV resize */
1253                 int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1254                 _editor.add_to_idle_resize (this, delta);
1255                 _resize_drag_start = ev->y_root;
1256         }
1257
1258         return true;
1259 }
1260
1261 bool
1262 TimeAxisView::resizer_expose (GdkEventExpose* event)
1263 {
1264         int w, h, x, y, d;
1265         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1266         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1267         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1268
1269         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1270                         true,
1271                         event->area.x,
1272                         event->area.y,
1273                         event->area.width,
1274                         event->area.height);
1275
1276         win->get_geometry (x, y, w, h, d);
1277
1278         /* handle/line #1 */
1279
1280         win->draw_line (dark, 0, 0, w - 2, 0);
1281         win->draw_point (dark, 0, 1);
1282         win->draw_line (light, 1, 1, w - 1, 1);
1283         win->draw_point (light, w - 1, 0);
1284
1285         /* handle/line #2 */
1286
1287         win->draw_line (dark, 0, 4, w - 2, 4);
1288         win->draw_point (dark, 0, 5);
1289         win->draw_line (light, 1, 5, w - 1, 5);
1290         win->draw_point (light, w - 1, 4);
1291
1292         /* use vertical resize mouse cursor */
1293         win->set_cursor(Gdk::Cursor(Gdk::SB_V_DOUBLE_ARROW));
1294
1295         return true;
1296 }
1297
1298 bool
1299 TimeAxisView::set_visibility (bool yn)
1300 {
1301         if (yn != marked_for_display()) {
1302                 if (yn) {
1303                         set_marked_for_display (true);
1304                         canvas_display()->show();
1305                 } else {
1306                         set_marked_for_display (false);
1307                         hide ();
1308                 }
1309                 return true; // things changed
1310         }
1311
1312         return false;
1313 }
1314
1315 uint32_t
1316 TimeAxisView::preset_height (Height h)
1317 {
1318         switch (h) {
1319         case HeightLargest:
1320                 return extra_height + 48 + 250;
1321         case HeightLarger:
1322                 return extra_height + 48 + 150;
1323         case HeightLarge:
1324                 return extra_height + 48 + 50;
1325         case HeightNormal:
1326                 return extra_height + 48;
1327         case HeightSmall:
1328                 return 27;
1329         case HeightSmaller:
1330                 return smaller_height;
1331         }
1332
1333         /* NOTREACHED */
1334         return 0;
1335 }
1336
1337 /** @return Child time axis views that are not hidden */
1338 TimeAxisView::Children
1339 TimeAxisView::get_child_list ()
1340 {
1341         Children c;
1342
1343         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1344                 if (!(*i)->hidden()) {
1345                         c.push_back(*i);
1346                 }
1347         }
1348
1349         return c;
1350 }
1351
1352 void
1353 TimeAxisView::build_size_menu ()
1354 {
1355         if (_size_menu) {
1356                 return;
1357         }
1358
1359         using namespace Menu_Helpers;
1360
1361         _size_menu = new Menu;
1362         _size_menu->set_name ("ArdourContextMenu");
1363         MenuList& items = _size_menu->items();
1364
1365         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLargest)));
1366         items.push_back (MenuElem (_("Larger"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarger)));
1367         items.push_back (MenuElem (_("Large"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarge)));
1368         items.push_back (MenuElem (_("Normal"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightNormal)));
1369         items.push_back (MenuElem (_("Smaller"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmaller)));
1370         items.push_back (MenuElem (_("Small"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmall)));
1371 }