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