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