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