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         , _controls_padding_table (3, 3)
  79         , _size_menu (0)
  80         , _y_position (0)
  81         , _editor (ed)
  82         , _order (0)
  83 {
  84         if (extra_height == 0) {
  85                 compute_heights ();
  86         }
  87
  88         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  89         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  90         _canvas_display->hide(); // reveal as needed
  91
  92         selection_group = new Group (*_canvas_display);
  93         selection_group->set_data (X_("timeselection"), (void *) 1);
  94         selection_group->hide();
  95
  96         _ghost_group = new Group (*_canvas_display);
  97         _ghost_group->lower_to_bottom();
  98         _ghost_group->show();
  99
 100         control_parent = 0;
 101         display_menu = 0;
 102         _hidden = false;
 103         in_destructor = false;
 104         height = 0;
 105         _effective_height = 0;
 106         parent = rent;
 107         _has_state = false;
 108         last_name_entry_key_press_event = 0;
 109         name_packing = NamePackingBits (0);
 110         _resize_drag_start = -1;
 111
 112         /*
 113           Create the standard LHS Controls
 114           We create the top-level container and name add the name label here,
 115           subclasses can add to the layout as required
 116         */
 117
 118         name_entry.set_name ("EditorTrackNameDisplay");
 119         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 120         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 121         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 122         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 123         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 124         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 125         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 126
 127         name_label.set_name ("TrackLabel");
 128         name_label.set_alignment (0.0, 0.5);
 129
 130         /* typically, either name_label OR name_entry are visible,
 131            but not both. its up to derived classes to show/hide them as they
 132            wish.
 133         */
 134
 135         name_hbox.show ();
 136
 137         controls_table.set_size_request (200);
 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         /* Use a rather hacky extra table so that we can control the space above/below and
 165          * left/right of the controls_table separately.  This in turn is so that we can
 166          * shrink the vertical space when the track is at its minimum height.
 167          */
 168         _controls_padding_table.set_row_spacings (2);
 169         _controls_padding_table.set_col_spacings (0);
 170         _controls_padding_table.attach (controls_table, 1, 2, 1, 2);
 171         _controls_padding_table.show ();
 172
 173         controls_vbox.pack_start (_controls_padding_table, false, false);
 174         controls_vbox.pack_end (resizer_box, false, false);
 175         controls_vbox.show ();
 176
 177         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 178         controls_ebox.add (controls_vbox);
 179         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 180         controls_ebox.set_flags (CAN_FOCUS);
 181
 182         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 183         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 184
 185         controls_hbox.pack_start (controls_ebox, false, false);
 186         controls_hbox.show ();
 187
 188         time_axis_vbox.pack_start (controls_hbox, true, true);
 189         time_axis_vbox.pack_end (*separator, false, false);
 190         time_axis_vbox.show();
 191
 192         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 193
 194         GhostRegion::CatchDeletion.connect (*this, invalidator (*this), ui_bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 195 }
 196
 197 TimeAxisView::~TimeAxisView()
 198 {
 199         in_destructor = true;
 200
 201         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 202                 delete *i;
 203         }
 204
 205         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 206                 delete (*i)->rect;
 207                 delete (*i)->start_trim;
 208                 delete (*i)->end_trim;
 209
 210         }
 211
 212         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 213                 delete (*i)->rect;
 214                 delete (*i)->start_trim;
 215                 delete (*i)->end_trim;
 216         }
 217
 218         delete selection_group;
 219         selection_group = 0;
 220
 221         delete _canvas_background;
 222         _canvas_background = 0;
 223
 224         delete _canvas_display;
 225         _canvas_display = 0;
 226
 227         delete display_menu;
 228         display_menu = 0;
 229
 230         delete _size_menu;
 231 }
 232
 233 /** Display this TimeAxisView as the nth component of the parent box, at y.
 234 *
 235 * @param y y position.
 236 * @param nth index for this TimeAxisView, increased if this view has children.
 237 * @param parent parent component.
 238 * @return height of this TimeAxisView.
 239 */
 240 guint32
 241 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 242 {
 243         if (control_parent) {
 244                 control_parent->reorder_child (time_axis_vbox, nth);
 245         } else {
 246                 control_parent = parent;
 247                 parent->pack_start (time_axis_vbox, false, false);
 248                 parent->reorder_child (time_axis_vbox, nth);
 249         }
 250
 251         _order = nth;
 252
 253         if (_y_position != y) {
 254                 _canvas_display->property_y () = y;
 255                 _canvas_background->property_y () = y;
 256                 /* silly canvas */
 257                 _canvas_display->move (0.0, 0.0);
 258                 _canvas_background->move (0.0, 0.0);
 259                 _y_position = y;
 260
 261         }
 262
 263         _canvas_background->raise_to_top ();
 264         _canvas_display->raise_to_top ();
 265
 266         if (_marked_for_display) {
 267                 time_axis_vbox.show ();
 268                 controls_ebox.show ();
 269                 _canvas_background->show ();
 270         }
 271
 272         _hidden = false;
 273
 274         _effective_height = current_height ();
 275
 276         /* now show children */
 277
 278         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 279                 if (canvas_item_visible ((*i)->_canvas_display)) {
 280                         ++nth;
 281                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 282                 }
 283         }
 284
 285         return _effective_height;
 286 }
 287
 288 void
 289 TimeAxisView::clip_to_viewport ()
 290 {
 291         if (_marked_for_display) {
 292                 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()) {
 293                         _canvas_background->hide ();
 294                         _canvas_display->hide ();
 295                         return;
 296                 }
 297                 _canvas_background->show ();
 298                 _canvas_display->show ();
 299         }
 300         return;
 301 }
 302
 303 bool
 304 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 305 {
 306         if (Keyboard::some_magic_widget_has_focus()) {
 307                 return false;
 308         }
 309
 310         switch (ev->direction) {
 311         case GDK_SCROLL_UP:
 312                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 313                         step_height (false);
 314                         return true;
 315                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 316                         _editor.scroll_tracks_up_line();
 317                         return true;
 318                 }
 319                 break;
 320
 321         case GDK_SCROLL_DOWN:
 322                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 323                         step_height (true);
 324                         return true;
 325                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 326                         _editor.scroll_tracks_down_line();
 327                         return true;
 328                 }
 329                 break;
 330
 331         default:
 332                 /* no handling for left/right, yet */
 333                 break;
 334         }
 335
 336         return false;
 337 }
 338
 339 bool
 340 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 341 {
 342         switch (ev->button) {
 343         case 1:
 344                 selection_click (ev);
 345                 break;
 346
 347         case 3:
 348                 popup_display_menu (ev->time);
 349                 break;
 350         }
 351
 352         return true;
 353 }
 354
 355 void
 356 TimeAxisView::selection_click (GdkEventButton* ev)
 357 {
 358         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 359         _editor.set_selected_track (*this, op, false);
 360 }
 361
 362 void
 363 TimeAxisView::hide ()
 364 {
 365         if (_hidden) {
 366                 return;
 367         }
 368
 369         _canvas_display->hide ();
 370         _canvas_background->hide ();
 371
 372         if (control_parent) {
 373                 control_parent->remove (time_axis_vbox);
 374                 control_parent = 0;
 375         }
 376
 377         _y_position = -1;
 378         _hidden = true;
 379
 380         /* now hide children */
 381
 382         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 383                 (*i)->hide ();
 384         }
 385
 386         /* if its hidden, it cannot be selected */
 387         _editor.get_selection().remove (this);
 388         /* and neither can its regions */
 389         _editor.get_selection().remove_regions (this);
 390
 391         Hiding ();
 392 }
 393
 394 /** Steps through the defined heights for this TrackView.
 395  *  @param coarser true if stepping should decrease in size, otherwise false.
 396  */
 397 void
 398 TimeAxisView::step_height (bool coarser)
 399 {
 400         static const uint32_t step = 25;
 401
 402         if (coarser) {
 403
 404                 if (height == preset_height (HeightSmall)) {
 405                         return;
 406                 }
 407
 408                 if (height <= preset_height (HeightSmaller) && height > preset_height (HeightSmall)) {
 409                         set_height_enum (HeightSmall);
 410                 } else if (height <= preset_height (HeightNormal) && height > preset_height (HeightSmaller)) {
 411                         set_height_enum (HeightSmaller);
 412                 } else {
 413                         set_height (height - step);
 414                 }
 415
 416         } else {
 417
 418                 if (height == preset_height(HeightSmall)) {
 419                         set_height_enum (HeightSmaller);
 420                 } else if (height == preset_height(HeightSmaller)) {
 421                         set_height_enum (HeightNormal);
 422                 } else {
 423                         set_height (height + step);
 424                 }
 425
 426         }
 427 }
 428
 429 void
 430 TimeAxisView::set_heights (uint32_t h)
 431 {
 432         TrackSelection& ts (_editor.get_selection().tracks);
 433
 434         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 435                 (*i)->set_height (h);
 436         }
 437 }
 438
 439 void
 440 TimeAxisView::set_height_enum (Height h, bool apply_to_selection)
 441 {
 442         if (apply_to_selection) {
 443                 _editor.get_selection().tracks.foreach_time_axis (boost::bind (&TimeAxisView::set_height_enum, _1, h, false));
 444         } else {
 445                 set_height (preset_height (h));
 446         }
 447 }
 448
 449 void
 450 TimeAxisView::set_height (uint32_t h)
 451 {
 452         if (h < preset_height (HeightSmall)) {
 453                 h = preset_height (HeightSmall);
 454         }
 455
 456         time_axis_vbox.property_height_request () = h;
 457         height = h;
 458
 459         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 460                 (*i)->set_height ();
 461         }
 462
 463         if (canvas_item_visible (selection_group)) {
 464                 /* resize the selection rect */
 465                 show_selection (_editor.get_selection().time);
 466         }
 467 }
 468
 469 bool
 470 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 471 {
 472         TrackViewList::iterator i;
 473
 474         switch (ev->keyval) {
 475         case GDK_Escape:
 476                 name_entry.select_region (0,0);
 477                 controls_ebox.grab_focus ();
 478                 name_entry_changed ();
 479                 return true;
 480
 481         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 482          * generates a different ev->keyval, rather than setting
 483          * ev->state.
 484          */
 485         case GDK_ISO_Left_Tab:
 486         case GDK_Tab:
 487         {
 488                 name_entry_changed ();
 489                 TrackViewList const & allviews = _editor.get_track_views ();
 490                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 491                 if (ev->keyval == GDK_Tab) {
 492                         if (i != allviews.end()) {
 493                                 do {
 494                                         if (++i == allviews.end()) {
 495                                                 return true;
 496                                         }
 497                                 } while((*i)->hidden());
 498                         }
 499                 } else {
 500                         if (i != allviews.begin()) {
 501                                 do {
 502                                         if (i == allviews.begin()) {
 503                                                 return true;
 504                                         }
 505                                         --i;
 506                                 } while ((*i)->hidden());
 507                         }
 508                 }
 509
 510
 511                 /* resize to show editable name display */
 512
 513                 if ((*i)->current_height() <= preset_height (HeightSmaller)) {
 514                         (*i)->set_height_enum (HeightSmaller);
 515                 }
 516
 517                 (*i)->name_entry.grab_focus();
 518         }
 519         return true;
 520
 521         case GDK_Up:
 522         case GDK_Down:
 523                 name_entry_changed ();
 524                 return true;
 525
 526         default:
 527                 break;
 528         }
 529
 530 #ifdef TIMEOUT_NAME_EDIT
 531         /* adapt the timeout to reflect the user's typing speed */
 532
 533         guint32 name_entry_timeout;
 534
 535         if (last_name_entry_key_press_event) {
 536                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 537                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 538         } else {
 539                 /* start with a 1 second timeout */
 540                 name_entry_timeout = 1000;
 541         }
 542
 543         last_name_entry_key_press_event = ev->time;
 544
 545         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 546
 547         name_entry_key_timeout.disconnect();
 548         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 549 #endif
 550
 551         return false;
 552 }
 553
 554 bool
 555 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 556 {
 557         name_entry.select_region (0, -1);
 558         name_entry.set_name ("EditorActiveTrackNameDisplay");
 559         return false;
 560 }
 561
 562 bool
 563 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 564 {
 565         /* clean up */
 566
 567         last_name_entry_key_press_event = 0;
 568         name_entry_key_timeout.disconnect ();
 569         name_entry.set_name ("EditorTrackNameDisplay");
 570         name_entry.select_region (0,0);
 571
 572         /* do the real stuff */
 573
 574         name_entry_changed ();
 575
 576         return false;
 577 }
 578
 579 bool
 580 TimeAxisView::name_entry_key_timed_out ()
 581 {
 582         name_entry_activated();
 583         return false;
 584 }
 585
 586 void
 587 TimeAxisView::name_entry_activated ()
 588 {
 589         controls_ebox.grab_focus();
 590 }
 591
 592 void
 593 TimeAxisView::name_entry_changed ()
 594 {
 595 }
 596
 597 bool
 598 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 599 {
 600         if (ev->button == 3) {
 601                 return true;
 602         }
 603         return false;
 604 }
 605
 606 bool
 607 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 608 {
 609         if (ev->button == 3) {
 610                 popup_display_menu (ev->time);
 611                 return true;
 612         }
 613         return false;
 614 }
 615
 616 void
 617 TimeAxisView::conditionally_add_to_selection ()
 618 {
 619         Selection& s (_editor.get_selection ());
 620
 621         if (!s.selected (this)) {
 622                 _editor.set_selected_track (*this, Selection::Set);
 623         }
 624 }
 625
 626 void
 627 TimeAxisView::popup_display_menu (guint32 when)
 628 {
 629         conditionally_add_to_selection ();
 630
 631         build_display_menu ();
 632         display_menu->popup (1, when);
 633 }
 634
 635 void
 636 TimeAxisView::set_selected (bool yn)
 637 {
 638         if (yn == _selected) {
 639                 return;
 640         }
 641
 642         Selectable::set_selected (yn);
 643
 644         if (_selected) {
 645                 controls_ebox.set_name (controls_base_selected_name);
 646                 time_axis_vbox.set_name (controls_base_selected_name);
 647                 controls_vbox.set_name (controls_base_selected_name);
 648         } else {
 649                 controls_ebox.set_name (controls_base_unselected_name);
 650                 time_axis_vbox.set_name (controls_base_unselected_name);
 651                 controls_vbox.set_name (controls_base_unselected_name);
 652                 hide_selection ();
 653
 654                 /* children will be set for the yn=true case. but when deselecting
 655                    the editor only has a list of top-level trackviews, so we
 656                    have to do this here.
 657                 */
 658
 659                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 660                         (*i)->set_selected (false);
 661                 }
 662         }
 663
 664         resizer.queue_draw ();
 665 }
 666
 667 void
 668 TimeAxisView::build_display_menu ()
 669 {
 670         using namespace Menu_Helpers;
 671
 672         delete display_menu;
 673
 674         display_menu = new Menu;
 675         display_menu->set_name ("ArdourContextMenu");
 676
 677         // Just let implementing classes define what goes into the manu
 678 }
 679
 680 void
 681 TimeAxisView::set_samples_per_unit (double spu)
 682 {
 683         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 684                 (*i)->set_samples_per_unit (spu);
 685         }
 686
 687         AnalysisFeatureList::const_iterator i;
 688         list<ArdourCanvas::SimpleLine*>::iterator l;
 689 }
 690
 691 void
 692 TimeAxisView::show_timestretch (framepos_t start, framepos_t end)
 693 {
 694         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 695                 (*i)->show_timestretch (start, end);
 696         }
 697 }
 698
 699 void
 700 TimeAxisView::hide_timestretch ()
 701 {
 702         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 703                 (*i)->hide_timestretch ();
 704         }
 705 }
 706
 707 void
 708 TimeAxisView::show_selection (TimeSelection& ts)
 709 {
 710         double x1;
 711         double x2;
 712         double y2;
 713         SelectionRect *rect;
 714
 715         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 716                 (*i)->show_selection (ts);
 717         }
 718
 719         if (canvas_item_visible (selection_group)) {
 720                 while (!used_selection_rects.empty()) {
 721                         free_selection_rects.push_front (used_selection_rects.front());
 722                         used_selection_rects.pop_front();
 723                         free_selection_rects.front()->rect->hide();
 724                         free_selection_rects.front()->start_trim->hide();
 725                         free_selection_rects.front()->end_trim->hide();
 726                 }
 727                 selection_group->hide();
 728         }
 729
 730         selection_group->show();
 731         selection_group->raise_to_top();
 732
 733         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 734                 framepos_t start, end;
 735                 framecnt_t cnt;
 736
 737                 start = (*i).start;
 738                 end = (*i).end;
 739                 cnt = end - start + 1;
 740
 741                 rect = get_selection_rect ((*i).id);
 742
 743                 x1 = _editor.frame_to_unit (start);
 744                 x2 = _editor.frame_to_unit (start + cnt - 1);
 745                 y2 = current_height();
 746
 747                 rect->rect->property_x1() = x1;
 748                 rect->rect->property_y1() = 1.0;
 749                 rect->rect->property_x2() = x2;
 750                 rect->rect->property_y2() = y2;
 751
 752                 // trim boxes are at the top for selections
 753
 754                 if (x2 > x1) {
 755                         rect->start_trim->property_x1() = x1;
 756                         rect->start_trim->property_y1() = 1.0;
 757                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 758                         rect->start_trim->property_y2() = y2;
 759
 760                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 761                         rect->end_trim->property_y1() = 1.0;
 762                         rect->end_trim->property_x2() = x2;
 763                         rect->end_trim->property_y2() = y2;
 764
 765                         rect->start_trim->show();
 766                         rect->end_trim->show();
 767                 } else {
 768                         rect->start_trim->hide();
 769                         rect->end_trim->hide();
 770                 }
 771
 772                 rect->rect->show ();
 773                 used_selection_rects.push_back (rect);
 774         }
 775 }
 776
 777 void
 778 TimeAxisView::reshow_selection (TimeSelection& ts)
 779 {
 780         show_selection (ts);
 781
 782         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 783                 (*i)->show_selection (ts);
 784         }
 785 }
 786
 787 void
 788 TimeAxisView::hide_selection ()
 789 {
 790         if (canvas_item_visible (selection_group)) {
 791                 while (!used_selection_rects.empty()) {
 792                         free_selection_rects.push_front (used_selection_rects.front());
 793                         used_selection_rects.pop_front();
 794                         free_selection_rects.front()->rect->hide();
 795                         free_selection_rects.front()->start_trim->hide();
 796                         free_selection_rects.front()->end_trim->hide();
 797                 }
 798                 selection_group->hide();
 799         }
 800
 801         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 802                 (*i)->hide_selection ();
 803         }
 804 }
 805
 806 void
 807 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 808 {
 809         /* find the selection rect this is for. we have the item corresponding to one
 810            of the trim handles.
 811          */
 812
 813         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 814                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 815
 816                         /* make one trim handle be "above" the other so that if they overlap,
 817                            the top one is the one last used.
 818                         */
 819
 820                         (*i)->rect->raise_to_top ();
 821                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 822                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 823
 824                         break;
 825                 }
 826         }
 827 }
 828
 829 SelectionRect *
 830 TimeAxisView::get_selection_rect (uint32_t id)
 831 {
 832         SelectionRect *rect;
 833
 834         /* check to see if we already have a visible rect for this particular selection ID */
 835
 836         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 837                 if ((*i)->id == id) {
 838                         return (*i);
 839                 }
 840         }
 841
 842         /* ditto for the free rect list */
 843
 844         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 845                 if ((*i)->id == id) {
 846                         SelectionRect* ret = (*i);
 847                         free_selection_rects.erase (i);
 848                         return ret;
 849                 }
 850         }
 851
 852         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 853
 854         if (free_selection_rects.empty()) {
 855
 856                 rect = new SelectionRect;
 857
 858                 rect->rect = new SimpleRect (*selection_group);
 859                 rect->rect->property_outline_what() = 0x0;
 860                 rect->rect->property_x1() = 0.0;
 861                 rect->rect->property_y1() = 0.0;
 862                 rect->rect->property_x2() = 0.0;
 863                 rect->rect->property_y2() = 0.0;
 864                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 865
 866                 rect->start_trim = new SimpleRect (*selection_group);
 867                 rect->start_trim->property_outline_what() = 0x0;
 868                 rect->start_trim->property_x1() = 0.0;
 869                 rect->start_trim->property_x2() = 0.0;
 870
 871                 rect->end_trim = new SimpleRect (*selection_group);
 872                 rect->end_trim->property_outline_what() = 0x0;
 873                 rect->end_trim->property_x1() = 0.0;
 874                 rect->end_trim->property_x2() = 0.0;
 875
 876                 free_selection_rects.push_front (rect);
 877
 878                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 879                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 880                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 881         }
 882
 883         rect = free_selection_rects.front();
 884         rect->id = id;
 885         free_selection_rects.pop_front();
 886         return rect;
 887 }
 888
 889 struct null_deleter { void operator()(void const *) const {} };
 890
 891 bool
 892 TimeAxisView::is_child (TimeAxisView* tav)
 893 {
 894         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 895 }
 896
 897 void
 898 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 899 {
 900         children.push_back (child);
 901 }
 902
 903 void
 904 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 905 {
 906         Children::iterator i;
 907
 908         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 909                 children.erase (i);
 910         }
 911 }
 912
 913 /** Get selectable things within a given range.
 914  *  @param start Start time in session frames.
 915  *  @param end End time in session frames.
 916  *  @param top Top y range, in trackview coordinates (ie 0 is the top of the track view)
 917  *  @param bot Bottom y range, in trackview coordinates (ie 0 is the top of the track view)
 918  *  @param result Filled in with selectable things.
 919  */
 920 void
 921 TimeAxisView::get_selectables (framepos_t /*start*/, framepos_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 922 {
 923         return;
 924 }
 925
 926 void
 927 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 928 {
 929         return;
 930 }
 931
 932 void
 933 TimeAxisView::add_ghost (RegionView* rv)
 934 {
 935         GhostRegion* gr = rv->add_ghost (*this);
 936
 937         if (gr) {
 938                 ghosts.push_back(gr);
 939         }
 940 }
 941
 942 void
 943 TimeAxisView::remove_ghost (RegionView* rv)
 944 {
 945         rv->remove_ghost_in (*this);
 946 }
 947
 948 void
 949 TimeAxisView::erase_ghost (GhostRegion* gr)
 950 {
 951         if (in_destructor) {
 952                 return;
 953         }
 954
 955         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 956                 if ((*i) == gr) {
 957                         ghosts.erase (i);
 958                         break;
 959                 }
 960         }
 961 }
 962
 963 bool
 964 TimeAxisView::touched (double top, double bot)
 965 {
 966         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 967           y_position is the "origin" or "top" of the track.
 968         */
 969
 970         double mybot = _y_position + current_height();
 971
 972         return ((_y_position <= bot && _y_position >= top) ||
 973                 ((mybot <= bot) && (top < mybot)) ||
 974                 (mybot >= bot && _y_position < top));
 975 }
 976
 977 void
 978 TimeAxisView::set_parent (TimeAxisView& p)
 979 {
 980         parent = &p;
 981 }
 982
 983 bool
 984 TimeAxisView::has_state () const
 985 {
 986         return _has_state;
 987 }
 988
 989 TimeAxisView*
 990 TimeAxisView::get_parent_with_state ()
 991 {
 992         if (parent == 0) {
 993                 return 0;
 994         }
 995
 996         if (parent->has_state()) {
 997                 return parent;
 998         }
 999
1000         return parent->get_parent_with_state ();
1001 }
1002
1003
1004 XMLNode&
1005 TimeAxisView::get_state ()
1006 {
1007         /* XXX: is this method used? */
1008
1009         XMLNode* node = new XMLNode ("TAV-" + name());
1010         char buf[32];
1011
1012         snprintf (buf, sizeof(buf), "%u", height);
1013         node->add_property ("height", buf);
1014         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
1015         return *node;
1016 }
1017
1018 int
1019 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1020 {
1021         const XMLProperty *prop;
1022
1023         /* XXX: I think this might be vestigial */
1024         if ((prop = node.property ("marked-for-display")) != 0) {
1025                 _marked_for_display = (prop->value() == "1");
1026         }
1027
1028         if ((prop = node.property ("shown-editor")) != 0) {
1029                 _marked_for_display = string_is_affirmative (prop->value ());
1030         }
1031
1032         if ((prop = node.property ("track-height")) != 0) {
1033
1034                 if (prop->value() == "largest") {
1035                         set_height_enum (HeightLargest);
1036                 } else if (prop->value() == "large") {
1037                         set_height_enum (HeightLarge);
1038                 } else if (prop->value() == "larger") {
1039                         set_height_enum (HeightLarger);
1040                 } else if (prop->value() == "normal") {
1041                         set_height_enum (HeightNormal);
1042                 } else if (prop->value() == "smaller") {
1043                         set_height_enum (HeightSmaller);
1044                 } else if (prop->value() == "small") {
1045                         set_height_enum (HeightSmall);
1046                 } else {
1047                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1048                         set_height_enum (HeightNormal);
1049                 }
1050
1051         } else if ((prop = node.property ("height")) != 0) {
1052
1053                 set_height (atoi (prop->value()));
1054
1055         } else {
1056
1057                 set_height_enum (HeightNormal);
1058         }
1059
1060         return 0;
1061 }
1062
1063 void
1064 TimeAxisView::reset_height ()
1065 {
1066         set_height (height);
1067
1068         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1069                 (*i)->set_height ((*i)->height);
1070         }
1071 }
1072
1073 void
1074 TimeAxisView::compute_heights ()
1075 {
1076         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1077         Gtk::Table two_row_table (2, 8);
1078         Gtk::Table one_row_table (1, 8);
1079         Button* buttons[5];
1080         const int border_width = 2;
1081         extra_height = (2 * border_width)
1082                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1083                 + 6; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1084
1085         window.add (one_row_table);
1086
1087         one_row_table.set_border_width (border_width);
1088         one_row_table.set_row_spacings (0);
1089         one_row_table.set_col_spacings (0);
1090         one_row_table.set_homogeneous (true);
1091
1092         two_row_table.set_border_width (border_width);
1093         two_row_table.set_row_spacings (0);
1094         two_row_table.set_col_spacings (0);
1095         two_row_table.set_homogeneous (true);
1096
1097         for (int i = 0; i < 5; ++i) {
1098                 buttons[i] = manage (new Button (X_("f")));
1099                 buttons[i]->set_name ("TrackMuteButton");
1100         }
1101
1102         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1103
1104         one_row_table.show_all ();
1105         Gtk::Requisition req(one_row_table.size_request ());
1106
1107         // height required to show 1 row of buttons
1108
1109         smaller_height = req.height + extra_height;
1110 }
1111
1112 void
1113 TimeAxisView::show_name_label ()
1114 {
1115         if (!(name_packing & NameLabelPacked)) {
1116                 name_hbox.pack_start (name_label, true, true);
1117                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1118                 name_hbox.show ();
1119                 name_label.show ();
1120         }
1121 }
1122
1123 void
1124 TimeAxisView::show_name_entry ()
1125 {
1126         if (!(name_packing & NameEntryPacked)) {
1127                 name_hbox.pack_start (name_entry, true, true);
1128                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1129                 name_hbox.show ();
1130                 name_entry.show ();
1131         }
1132 }
1133
1134 void
1135 TimeAxisView::hide_name_label ()
1136 {
1137         if (name_packing & NameLabelPacked) {
1138                 name_hbox.remove (name_label);
1139                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1140         }
1141 }
1142
1143 void
1144 TimeAxisView::hide_name_entry ()
1145 {
1146         if (name_packing & NameEntryPacked) {
1147                 name_hbox.remove (name_entry);
1148                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1149         }
1150 }
1151
1152 void
1153 TimeAxisView::color_handler ()
1154 {
1155         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); i++) {
1156                 (*i)->set_colors();
1157         }
1158
1159         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1160
1161                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1162                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1163
1164                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1165                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1166
1167                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1168                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1169         }
1170
1171         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1172
1173                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1174                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1175
1176                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1177                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1178
1179                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1180                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1181         }
1182 }
1183
1184 /** @return Pair: TimeAxisView, layer index.
1185  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1186  * If the covering object is a child axis, then the child is returned.
1187  * TimeAxisView is 0 otherwise.
1188  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1189  * region display mode, otherwise 0.
1190  */
1191 std::pair<TimeAxisView*, layer_t>
1192 TimeAxisView::covers_y_position (double y)
1193 {
1194         if (hidden()) {
1195                 return std::make_pair ((TimeAxisView *) 0, 0);
1196         }
1197
1198         if (_y_position <= y && y < (_y_position + height)) {
1199
1200                 /* work out the layer index if appropriate */
1201                 layer_t l = 0;
1202                 if (layer_display () == Stacked && view ()) {
1203                         /* compute layer */
1204                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1205                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1206                           returns a too-high value */
1207                         if (l >= view()->layers ()) {
1208                                 l = view()->layers() - 1;
1209                         }
1210                 }
1211
1212                 return std::make_pair (this, l);
1213         }
1214
1215         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1216
1217                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1218                 if (r.first) {
1219                         return r;
1220                 }
1221         }
1222
1223         return std::make_pair ((TimeAxisView *) 0, 0);
1224 }
1225
1226 bool
1227 TimeAxisView::resizer_button_press (GdkEventButton* event)
1228 {
1229         _resize_drag_start = event->y_root;
1230         return true;
1231 }
1232
1233 bool
1234 TimeAxisView::resizer_button_release (GdkEventButton*)
1235 {
1236         _editor.stop_canvas_autoscroll ();
1237         _resize_drag_start = -1;
1238         return true;
1239 }
1240
1241 void
1242 TimeAxisView::idle_resize (uint32_t h)
1243 {
1244         set_height (h);
1245 }
1246
1247 bool
1248 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1249 {
1250         if (_resize_drag_start >= 0) {
1251                 /* (ab)use the DragManager to do autoscrolling; adjust the event coordinates
1252                    into the world coordinate space that DragManager::motion_handler is expecting,
1253                    and then fake a DragManager motion event so that when maybe_autoscroll
1254                    asks DragManager for the current pointer position it will get the correct
1255                    answers.
1256                 */
1257                 int tx, ty;
1258                 resizer.translate_coordinates (*control_parent, ev->x, ev->y, tx, ty);
1259                 ev->y = ty - _editor.get_trackview_group_vertical_offset();
1260                 _editor.drags()->motion_handler ((GdkEvent *) ev, false);
1261                 _editor.maybe_autoscroll (false, true);
1262
1263                 /* now do the actual TAV resize */
1264                 int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1265                 _editor.add_to_idle_resize (this, delta);
1266                 _resize_drag_start = ev->y_root;
1267         }
1268
1269         return true;
1270 }
1271
1272 bool
1273 TimeAxisView::resizer_expose (GdkEventExpose* event)
1274 {
1275         int w, h, x, y, d;
1276         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1277         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1278         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1279
1280         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1281                         true,
1282                         event->area.x,
1283                         event->area.y,
1284                         event->area.width,
1285                         event->area.height);
1286
1287         win->get_geometry (x, y, w, h, d);
1288
1289         /* handle/line #1 */
1290
1291         win->draw_line (dark, 0, 0, w - 2, 0);
1292         win->draw_point (dark, 0, 1);
1293         win->draw_line (light, 1, 1, w - 1, 1);
1294         win->draw_point (light, w - 1, 0);
1295
1296         /* handle/line #2 */
1297
1298         win->draw_line (dark, 0, 4, w - 2, 4);
1299         win->draw_point (dark, 0, 5);
1300         win->draw_line (light, 1, 5, w - 1, 5);
1301         win->draw_point (light, w - 1, 4);
1302
1303         /* use vertical resize mouse cursor */
1304         win->set_cursor(Gdk::Cursor(Gdk::SB_V_DOUBLE_ARROW));
1305
1306         return true;
1307 }
1308
1309 bool
1310 TimeAxisView::set_visibility (bool yn)
1311 {
1312         if (yn != marked_for_display()) {
1313                 if (yn) {
1314                         set_marked_for_display (true);
1315                         canvas_display()->show();
1316                 } else {
1317                         set_marked_for_display (false);
1318                         hide ();
1319                 }
1320                 return true; // things changed
1321         }
1322
1323         return false;
1324 }
1325
1326 uint32_t
1327 TimeAxisView::preset_height (Height h)
1328 {
1329         switch (h) {
1330         case HeightLargest:
1331                 return extra_height + 48 + 250;
1332         case HeightLarger:
1333                 return extra_height + 48 + 150;
1334         case HeightLarge:
1335                 return extra_height + 48 + 50;
1336         case HeightNormal:
1337                 return extra_height + 48;
1338         case HeightSmall:
1339                 return 27;
1340         case HeightSmaller:
1341                 return smaller_height;
1342         }
1343
1344         /* NOTREACHED */
1345         return 0;
1346 }
1347
1348 /** @return Child time axis views that are not hidden */
1349 TimeAxisView::Children
1350 TimeAxisView::get_child_list ()
1351 {
1352         Children c;
1353
1354         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1355                 if (!(*i)->hidden()) {
1356                         c.push_back(*i);
1357                 }
1358         }
1359
1360         return c;
1361 }
1362
1363 void
1364 TimeAxisView::build_size_menu ()
1365 {
1366         if (_size_menu && _size_menu->gobj ()) {
1367                 return;
1368         }
1369
1370         delete _size_menu;
1371
1372         using namespace Menu_Helpers;
1373
1374         _size_menu = new Menu;
1375         _size_menu->set_name ("ArdourContextMenu");
1376         MenuList& items = _size_menu->items();
1377
1378         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLargest, true)));
1379         items.push_back (MenuElem (_("Larger"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarger, true)));
1380         items.push_back (MenuElem (_("Large"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightLarge, true)));
1381         items.push_back (MenuElem (_("Normal"),  sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightNormal, true)));
1382         items.push_back (MenuElem (_("Smaller"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmaller, true)));
1383         items.push_back (MenuElem (_("Small"),   sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_height_enum), HeightSmall, true)));
1384 }