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
  32 #include <gtkmm2ext/utils.h>
  33 #include <gtkmm2ext/selector.h>
  34 #include <gtkmm2ext/stop_signal.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
  69 uint32_t TimeAxisView::hLargest = 0;
  70 uint32_t TimeAxisView::hLarge = 0;
  71 uint32_t TimeAxisView::hLarger = 0;
  72 uint32_t TimeAxisView::hNormal = 0;
  73 uint32_t TimeAxisView::hSmaller = 0;
  74 uint32_t TimeAxisView::hSmall = 0;
  75 bool TimeAxisView::need_size_info = true;
  76 int const TimeAxisView::_max_order = 512;
  77 PBD::Signal1<void,TimeAxisView*> TimeAxisView::CatchDeletion;
  78
  79 TimeAxisView::TimeAxisView (ARDOUR::Session* sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  80         : AxisView (sess),
  81           controls_table (2, 8),
  82           _y_position (0),
  83           _editor (ed),
  84           _order (0)
  85 {
  86         if (need_size_info) {
  87                 compute_controls_size_info ();
  88                 need_size_info = false;
  89         }
  90         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  91         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  92
  93         selection_group = new Group (*_canvas_display);
  94         selection_group->hide();
  95
  96         _ghost_group = new Group (*_canvas_display);
  97         _ghost_group->lower_to_bottom();
  98         _ghost_group->show();
  99
 100         control_parent = 0;
 101         display_menu = 0;
 102         size_menu = 0;
 103         _hidden = false;
 104         in_destructor = false;
 105         height = 0;
 106         _effective_height = 0;
 107         parent = rent;
 108         _has_state = false;
 109         last_name_entry_key_press_event = 0;
 110         name_packing = NamePackingBits (0);
 111         _resize_drag_start = -1;
 112
 113         /*
 114           Create the standard LHS Controls
 115           We create the top-level container and name add the name label here,
 116           subclasses can add to the layout as required
 117         */
 118
 119         name_entry.set_name ("EditorTrackNameDisplay");
 120         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 121         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 122         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 123         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 124         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 125         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 126         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 127
 128         name_label.set_name ("TrackLabel");
 129         name_label.set_alignment (0.0, 0.5);
 130
 131         /* typically, either name_label OR name_entry are visible,
 132            but not both. its up to derived classes to show/hide them as they
 133            wish.
 134         */
 135
 136         name_hbox.show ();
 137
 138         controls_table.set_size_request (200);
 139         controls_table.set_border_width (2);
 140         controls_table.set_row_spacings (0);
 141         controls_table.set_col_spacings (0);
 142         controls_table.set_homogeneous (true);
 143
 144         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 145         controls_table.show_all ();
 146         controls_table.set_no_show_all ();
 147
 148         resizer.set_size_request (10, 10);
 149         resizer.set_name ("ResizeHandle");
 150         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 151         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 152         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 153         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 154         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 155                         Gdk::BUTTON_RELEASE_MASK|
 156                         Gdk::POINTER_MOTION_MASK|
 157                         Gdk::SCROLL_MASK);
 158
 159         resizer_box.pack_start (resizer, false, false);
 160         resizer.show ();
 161         resizer_box.show();
 162
 163         HSeparator* separator = manage (new HSeparator());
 164
 165         controls_vbox.pack_start (controls_table, false, false);
 166         controls_vbox.pack_end (*separator, false, false);
 167         controls_vbox.pack_end (resizer_box, false, true);
 168         controls_vbox.show ();
 169
 170         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 171         controls_ebox.add (controls_vbox);
 172         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 173         controls_ebox.set_flags (CAN_FOCUS);
 174
 175         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 176         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 177
 178         controls_hbox.pack_start (controls_ebox,true,true);
 179         controls_hbox.show ();
 180
 181         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 182
 183         GhostRegion::CatchDeletion.connect (*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         for (list<SimpleLine*>::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
 208                 delete (*i);
 209         }
 210
 211         delete selection_group;
 212         selection_group = 0;
 213
 214         delete _canvas_background;
 215         _canvas_background = 0;
 216
 217         delete _canvas_display;
 218         _canvas_display = 0;
 219
 220         delete display_menu;
 221         display_menu = 0;
 222 }
 223
 224 /** Display this TimeAxisView as the nth component of the parent box, at y.
 225 *
 226 * @param y y position.
 227 * @param nth index for this TimeAxisView, increased if this view has children.
 228 * @param parent parent component.
 229 * @return height of this TimeAxisView.
 230 */
 231 guint32
 232 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 233 {
 234         if (control_parent) {
 235                 control_parent->reorder_child (controls_hbox, nth);
 236         } else {
 237                 control_parent = parent;
 238                 parent->pack_start (controls_hbox, false, false);
 239                 parent->reorder_child (controls_hbox, nth);
 240         }
 241
 242         _order = nth;
 243
 244         if (_y_position != y) {
 245                 _canvas_display->property_y () = y;
 246                 _canvas_background->property_y () = y;
 247                 /* silly canvas */
 248                 _canvas_display->move (0.0, 0.0);
 249                 _canvas_background->move (0.0, 0.0);
 250                 _y_position = y;
 251
 252         }
 253
 254         _canvas_background->raise_to_top ();
 255         _canvas_display->raise_to_top ();
 256
 257         if (_marked_for_display) {
 258                 controls_hbox.show ();
 259                 controls_ebox.show ();
 260                 _canvas_background->show ();
 261         }
 262
 263         _hidden = false;
 264
 265         _effective_height = current_height ();
 266
 267         /* now show children */
 268
 269         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 270                 if (canvas_item_visible ((*i)->_canvas_display)) {
 271                         ++nth;
 272                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 273                 }
 274         }
 275
 276         return _effective_height;
 277 }
 278
 279 void
 280 TimeAxisView::clip_to_viewport ()
 281 {
 282         if (_marked_for_display) {
 283                 if (_y_position + _effective_height < _editor.get_trackview_group_vertical_offset () || _y_position > _editor.get_trackview_group_vertical_offset () + _canvas_display->get_canvas()->get_height()) {
 284                         _canvas_background->hide ();
 285                         _canvas_display->hide ();
 286                         return;
 287                 }
 288                 _canvas_background->show ();
 289                 _canvas_display->show ();
 290         }
 291         return;
 292 }
 293
 294 bool
 295 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 296 {
 297         if (Keyboard::some_magic_widget_has_focus()) {
 298                 return false;
 299         }
 300
 301         switch (ev->direction) {
 302         case GDK_SCROLL_UP:
 303                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 304                         step_height (true);
 305                         return true;
 306                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 307                         _editor.scroll_tracks_up_line();
 308                         return true;
 309                 }
 310                 break;
 311
 312         case GDK_SCROLL_DOWN:
 313                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 314                         step_height (false);
 315                         return true;
 316                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 317                         _editor.scroll_tracks_down_line();
 318                         return true;
 319                 }
 320                 break;
 321
 322         default:
 323                 /* no handling for left/right, yet */
 324                 break;
 325         }
 326
 327         return false;
 328 }
 329
 330 bool
 331 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 332 {
 333         switch (ev->button) {
 334         case 1:
 335                 selection_click (ev);
 336                 break;
 337
 338         case 3:
 339                 popup_display_menu (ev->time);
 340                 break;
 341         }
 342
 343         return true;
 344 }
 345
 346 void
 347 TimeAxisView::selection_click (GdkEventButton* ev)
 348 {
 349         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 350         _editor.set_selected_track (*this, op, false);
 351 }
 352
 353 void
 354 TimeAxisView::hide ()
 355 {
 356         if (_hidden) {
 357                 return;
 358         }
 359
 360         _canvas_display->hide ();
 361         _canvas_background->hide ();
 362
 363         if (control_parent) {
 364                 control_parent->remove (controls_hbox);
 365                 control_parent = 0;
 366         }
 367
 368         _y_position = -1;
 369         _hidden = true;
 370
 371         /* now hide children */
 372
 373         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 374                 (*i)->hide ();
 375         }
 376
 377         /* if its hidden, it cannot be selected */
 378
 379         _editor.get_selection().remove (this);
 380
 381         Hiding ();
 382 }
 383
 384 void
 385 TimeAxisView::step_height (bool bigger)
 386 {
 387         static const uint32_t step = 20;
 388
 389         if (bigger) {
 390                 set_height (height + step);
 391         } else {
 392                 if (height > step) {
 393                         set_height (std::max (height - step, hSmall));
 394                 } else if (height != hSmall) {
 395                         set_height (hSmall);
 396                 }
 397         }
 398 }
 399
 400 void
 401 TimeAxisView::set_heights (uint32_t h)
 402 {
 403         TrackSelection& ts (_editor.get_selection().tracks);
 404
 405         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 406                 (*i)->set_height (h);
 407         }
 408 }
 409
 410 void
 411 TimeAxisView::set_height(uint32_t h)
 412 {
 413         controls_ebox.property_height_request () = h;
 414         height = h;
 415
 416         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 417                 (*i)->set_height ();
 418         }
 419
 420         if (canvas_item_visible (selection_group)) {
 421                 /* resize the selection rect */
 422                 show_selection (_editor.get_selection().time);
 423         }
 424
 425         reshow_feature_lines ();
 426 }
 427
 428 bool
 429 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 430 {
 431         TrackViewList::iterator i;
 432
 433         switch (ev->keyval) {
 434         case GDK_Escape:
 435                 name_entry.select_region (0,0);
 436                 controls_ebox.grab_focus ();
 437                 name_entry_changed ();
 438                 return true;
 439
 440         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 441          * generates a different ev->keyval, rather than setting
 442          * ev->state.
 443          */
 444         case GDK_ISO_Left_Tab:
 445         case GDK_Tab:
 446         {
 447                 name_entry_changed ();
 448                 TrackViewList const & allviews = _editor.get_track_views ();
 449                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 450                 if (ev->keyval == GDK_Tab) {
 451                         if (i != allviews.end()) {
 452                                 do {
 453                                         if (++i == allviews.end()) {
 454                                                 return true;
 455                                         }
 456                                 } while((*i)->hidden());
 457                         }
 458                 } else {
 459                         if (i != allviews.begin()) {
 460                                 do {
 461                                         if (i == allviews.begin()) {
 462                                                 return true;
 463                                         }
 464                                         --i;
 465                                 } while ((*i)->hidden());
 466                         }
 467                 }
 468
 469
 470                 /* resize to show editable name display */
 471
 472                 if ((*i)->current_height() <= hSmaller) {
 473                         (*i)->set_height (hSmaller);
 474                 }
 475
 476                 (*i)->name_entry.grab_focus();
 477         }
 478         return true;
 479
 480         case GDK_Up:
 481         case GDK_Down:
 482                 name_entry_changed ();
 483                 return true;
 484
 485         default:
 486                 break;
 487         }
 488
 489 #ifdef TIMEOUT_NAME_EDIT
 490         /* adapt the timeout to reflect the user's typing speed */
 491
 492         guint32 name_entry_timeout;
 493
 494         if (last_name_entry_key_press_event) {
 495                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 496                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 497         } else {
 498                 /* start with a 1 second timeout */
 499                 name_entry_timeout = 1000;
 500         }
 501
 502         last_name_entry_key_press_event = ev->time;
 503
 504         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 505
 506         name_entry_key_timeout.disconnect();
 507         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 508 #endif
 509
 510         return false;
 511 }
 512
 513 bool
 514 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 515 {
 516         name_entry.select_region (0, -1);
 517         name_entry.set_name ("EditorActiveTrackNameDisplay");
 518         return false;
 519 }
 520
 521 bool
 522 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 523 {
 524         /* clean up */
 525
 526         last_name_entry_key_press_event = 0;
 527         name_entry_key_timeout.disconnect ();
 528         name_entry.set_name ("EditorTrackNameDisplay");
 529         name_entry.select_region (0,0);
 530
 531         /* do the real stuff */
 532
 533         name_entry_changed ();
 534
 535         return false;
 536 }
 537
 538 bool
 539 TimeAxisView::name_entry_key_timed_out ()
 540 {
 541         name_entry_activated();
 542         return false;
 543 }
 544
 545 void
 546 TimeAxisView::name_entry_activated ()
 547 {
 548         controls_ebox.grab_focus();
 549 }
 550
 551 void
 552 TimeAxisView::name_entry_changed ()
 553 {
 554 }
 555
 556 bool
 557 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 558 {
 559         if (ev->button == 3) {
 560                 return true;
 561         }
 562         return false;
 563 }
 564
 565 bool
 566 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 567 {
 568         if (ev->button == 3) {
 569                 popup_display_menu (ev->time);
 570                 return true;
 571         }
 572         return false;
 573 }
 574
 575 void
 576 TimeAxisView::conditionally_add_to_selection ()
 577 {
 578         Selection& s (_editor.get_selection ());
 579
 580         if (!s.selected (this)) {
 581                 _editor.set_selected_track (*this, Selection::Set);
 582         }
 583 }
 584
 585 void
 586 TimeAxisView::popup_display_menu (guint32 when)
 587 {
 588         if (display_menu == 0) {
 589                 build_display_menu ();
 590         }
 591
 592         conditionally_add_to_selection ();
 593         display_menu->popup (1, when);
 594 }
 595
 596 gint
 597 TimeAxisView::size_click (GdkEventButton *ev)
 598 {
 599         conditionally_add_to_selection ();
 600         popup_size_menu (ev->time);
 601         return TRUE;
 602 }
 603
 604 void
 605 TimeAxisView::popup_size_menu (guint32 when)
 606 {
 607         if (size_menu == 0) {
 608                 build_size_menu ();
 609         }
 610         size_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                 controls_hbox.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                 controls_hbox.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_size_menu ()
 647 {
 648         using namespace Menu_Helpers;
 649
 650         size_menu = new Menu;
 651         size_menu->set_name ("ArdourContextMenu");
 652         MenuList& items = size_menu->items();
 653
 654         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLargest)));
 655         items.push_back (MenuElem (_("Large"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLarge)));
 656         items.push_back (MenuElem (_("Larger"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLarger)));
 657         items.push_back (MenuElem (_("Normal"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hNormal)));
 658         items.push_back (MenuElem (_("Smaller"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights),hSmaller)));
 659         items.push_back (MenuElem (_("Small"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hSmall)));
 660 }
 661
 662 void
 663 TimeAxisView::build_display_menu ()
 664 {
 665         using namespace Menu_Helpers;
 666
 667         display_menu = new Menu;
 668         display_menu->set_name ("ArdourContextMenu");
 669
 670         // Just let implementing classes define what goes into the manu
 671 }
 672
 673 void
 674 TimeAxisView::set_samples_per_unit (double spu)
 675 {
 676         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 677                 (*i)->set_samples_per_unit (spu);
 678         }
 679
 680         AnalysisFeatureList::const_iterator i;
 681         list<ArdourCanvas::SimpleLine*>::iterator l;
 682
 683         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
 684                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
 685                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
 686         }
 687 }
 688
 689 void
 690 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 691 {
 692         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 693                 (*i)->show_timestretch (start, end);
 694         }
 695 }
 696
 697 void
 698 TimeAxisView::hide_timestretch ()
 699 {
 700         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 701                 (*i)->hide_timestretch ();
 702         }
 703 }
 704
 705 void
 706 TimeAxisView::show_selection (TimeSelection& ts)
 707 {
 708         double x1;
 709         double x2;
 710         double y2;
 711         SelectionRect *rect;
 712
 713         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 714                 (*i)->show_selection (ts);
 715         }
 716
 717         if (canvas_item_visible (selection_group)) {
 718                 while (!used_selection_rects.empty()) {
 719                         free_selection_rects.push_front (used_selection_rects.front());
 720                         used_selection_rects.pop_front();
 721                         free_selection_rects.front()->rect->hide();
 722                         free_selection_rects.front()->start_trim->hide();
 723                         free_selection_rects.front()->end_trim->hide();
 724                 }
 725                 selection_group->hide();
 726         }
 727
 728         selection_group->show();
 729         selection_group->raise_to_top();
 730
 731         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 732                 nframes_t start, end, cnt;
 733
 734                 start = (*i).start;
 735                 end = (*i).end;
 736                 cnt = end - start + 1;
 737
 738                 rect = get_selection_rect ((*i).id);
 739
 740                 x1 = _editor.frame_to_unit (start);
 741                 x2 = _editor.frame_to_unit (start + cnt - 1);
 742                 y2 = current_height();
 743
 744                 rect->rect->property_x1() = x1;
 745                 rect->rect->property_y1() = 1.0;
 746                 rect->rect->property_x2() = x2;
 747                 rect->rect->property_y2() = y2;
 748
 749                 // trim boxes are at the top for selections
 750
 751                 if (x2 > x1) {
 752                         rect->start_trim->property_x1() = x1;
 753                         rect->start_trim->property_y1() = 1.0;
 754                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 755                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 756
 757                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 758                         rect->end_trim->property_y1() = 1.0;
 759                         rect->end_trim->property_x2() = x2;
 760                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 761
 762                         rect->start_trim->show();
 763                         rect->end_trim->show();
 764                 } else {
 765                         rect->start_trim->hide();
 766                         rect->end_trim->hide();
 767                 }
 768
 769                 rect->rect->show ();
 770                 used_selection_rects.push_back (rect);
 771         }
 772 }
 773
 774 void
 775 TimeAxisView::reshow_selection (TimeSelection& ts)
 776 {
 777         show_selection (ts);
 778
 779         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 780                 (*i)->show_selection (ts);
 781         }
 782 }
 783
 784 void
 785 TimeAxisView::hide_selection ()
 786 {
 787         if (canvas_item_visible (selection_group)) {
 788                 while (!used_selection_rects.empty()) {
 789                         free_selection_rects.push_front (used_selection_rects.front());
 790                         used_selection_rects.pop_front();
 791                         free_selection_rects.front()->rect->hide();
 792                         free_selection_rects.front()->start_trim->hide();
 793                         free_selection_rects.front()->end_trim->hide();
 794                 }
 795                 selection_group->hide();
 796         }
 797
 798         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 799                 (*i)->hide_selection ();
 800         }
 801 }
 802
 803 void
 804 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 805 {
 806         /* find the selection rect this is for. we have the item corresponding to one
 807            of the trim handles.
 808          */
 809
 810         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 811                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 812
 813                         /* make one trim handle be "above" the other so that if they overlap,
 814                            the top one is the one last used.
 815                         */
 816
 817                         (*i)->rect->raise_to_top ();
 818                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 819                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 820
 821                         break;
 822                 }
 823         }
 824 }
 825
 826 SelectionRect *
 827 TimeAxisView::get_selection_rect (uint32_t id)
 828 {
 829         SelectionRect *rect;
 830
 831         /* check to see if we already have a visible rect for this particular selection ID */
 832
 833         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 834                 if ((*i)->id == id) {
 835                         return (*i);
 836                 }
 837         }
 838
 839         /* ditto for the free rect list */
 840
 841         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 842                 if ((*i)->id == id) {
 843                         SelectionRect* ret = (*i);
 844                         free_selection_rects.erase (i);
 845                         return ret;
 846                 }
 847         }
 848
 849         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 850
 851         if (free_selection_rects.empty()) {
 852
 853                 rect = new SelectionRect;
 854
 855                 rect->rect = new SimpleRect (*selection_group);
 856                 rect->rect->property_x1() = 0.0;
 857                 rect->rect->property_y1() = 0.0;
 858                 rect->rect->property_x2() = 0.0;
 859                 rect->rect->property_y2() = 0.0;
 860                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 861                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 862
 863                 rect->start_trim = new SimpleRect (*selection_group);
 864                 rect->start_trim->property_x1() = 0.0;
 865                 rect->start_trim->property_x2() = 0.0;
 866                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 867                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 868
 869                 rect->end_trim = new SimpleRect (*selection_group);
 870                 rect->end_trim->property_x1() = 0.0;
 871                 rect->end_trim->property_x2() = 0.0;
 872                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 873                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 874
 875                 free_selection_rects.push_front (rect);
 876
 877                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 878                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 879                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 880         }
 881
 882         rect = free_selection_rects.front();
 883         rect->id = id;
 884         free_selection_rects.pop_front();
 885         return rect;
 886 }
 887
 888 struct null_deleter { void operator()(void const *) const {} };
 889
 890 bool
 891 TimeAxisView::is_child (TimeAxisView* tav)
 892 {
 893         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 894 }
 895
 896 void
 897 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 898 {
 899         children.push_back (child);
 900 }
 901
 902 void
 903 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 904 {
 905         Children::iterator i;
 906
 907         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 908                 children.erase (i);
 909         }
 910 }
 911
 912 void
 913 TimeAxisView::get_selectables (nframes_t /*start*/, nframes_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 914 {
 915         return;
 916 }
 917
 918 void
 919 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 920 {
 921         return;
 922 }
 923
 924 void
 925 TimeAxisView::add_ghost (RegionView* rv)
 926 {
 927         GhostRegion* gr = rv->add_ghost (*this);
 928
 929         if(gr) {
 930                 ghosts.push_back(gr);
 931         }
 932 }
 933
 934 void
 935 TimeAxisView::remove_ghost (RegionView* rv)
 936 {
 937         rv->remove_ghost_in (*this);
 938 }
 939
 940 void
 941 TimeAxisView::erase_ghost (GhostRegion* gr)
 942 {
 943         if (in_destructor) {
 944                 return;
 945         }
 946
 947         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 948                 if ((*i) == gr) {
 949                         ghosts.erase (i);
 950                         break;
 951                 }
 952         }
 953 }
 954
 955 bool
 956 TimeAxisView::touched (double top, double bot)
 957 {
 958         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 959           y_position is the "origin" or "top" of the track.
 960         */
 961
 962         double mybot = _y_position + current_height();
 963
 964         return ((_y_position <= bot && _y_position >= top) ||
 965                 ((mybot <= bot) && (top < mybot)) ||
 966                 (mybot >= bot && _y_position < top));
 967 }
 968
 969 void
 970 TimeAxisView::set_parent (TimeAxisView& p)
 971 {
 972         parent = &p;
 973 }
 974
 975 bool
 976 TimeAxisView::has_state () const
 977 {
 978         return _has_state;
 979 }
 980
 981 TimeAxisView*
 982 TimeAxisView::get_parent_with_state ()
 983 {
 984         if (parent == 0) {
 985                 return 0;
 986         }
 987
 988         if (parent->has_state()) {
 989                 return parent;
 990         }
 991
 992         return parent->get_parent_with_state ();
 993 }
 994
 995
 996 XMLNode&
 997 TimeAxisView::get_state ()
 998 {
 999         XMLNode* node = new XMLNode ("TAV-" + name());
1000         char buf[32];
1001
1002         snprintf (buf, sizeof(buf), "%u", height);
1003         node->add_property ("height", buf);
1004         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
1005         return *node;
1006 }
1007
1008 int
1009 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1010 {
1011         const XMLProperty *prop;
1012
1013         if ((prop = node.property ("marked-for-display")) != 0) {
1014                 _marked_for_display = (prop->value() == "1");
1015         }
1016
1017         if ((prop = node.property ("track-height")) != 0) {
1018
1019                 if (prop->value() == "largest") {
1020                         set_height (hLargest);
1021                 } else if (prop->value() == "large") {
1022                         set_height (hLarge);
1023                 } else if (prop->value() == "larger") {
1024                         set_height (hLarger);
1025                 } else if (prop->value() == "normal") {
1026                         set_height (hNormal);
1027                 } else if (prop->value() == "smaller") {
1028                         set_height (hSmaller);
1029                 } else if (prop->value() == "small") {
1030                         set_height (hSmall);
1031                 } else {
1032                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1033                         set_height (Normal);
1034                 }
1035
1036         } else if ((prop = node.property ("height")) != 0) {
1037
1038                 set_height (atoi (prop->value()));
1039
1040         } else {
1041
1042                 set_height (hNormal);
1043         }
1044
1045         return 0;
1046 }
1047
1048 void
1049 TimeAxisView::reset_height()
1050 {
1051         set_height (height);
1052
1053         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1054                 (*i)->set_height ((*i)->height);
1055         }
1056 }
1057
1058 void
1059 TimeAxisView::compute_controls_size_info ()
1060 {
1061         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1062         Gtk::Table two_row_table (2, 8);
1063         Gtk::Table one_row_table (1, 8);
1064         Button* buttons[5];
1065         const int border_width = 2;
1066         const int extra_height = (2 * border_width)
1067                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1068                 + 10; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1069
1070         window.add (one_row_table);
1071
1072         one_row_table.set_border_width (border_width);
1073         one_row_table.set_row_spacings (0);
1074         one_row_table.set_col_spacings (0);
1075         one_row_table.set_homogeneous (true);
1076
1077         two_row_table.set_border_width (border_width);
1078         two_row_table.set_row_spacings (0);
1079         two_row_table.set_col_spacings (0);
1080         two_row_table.set_homogeneous (true);
1081
1082         for (int i = 0; i < 5; ++i) {
1083                 buttons[i] = manage (new Button (X_("f")));
1084                 buttons[i]->set_name ("TrackMuteButton");
1085         }
1086
1087         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1088
1089         one_row_table.show_all ();
1090         Gtk::Requisition req(one_row_table.size_request ());
1091
1092
1093         // height required to show 1 row of buttons
1094
1095         hSmaller = req.height + extra_height;
1096
1097         window.remove ();
1098         window.add (two_row_table);
1099
1100         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1101         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1102         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1103         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1104
1105         two_row_table.show_all ();
1106         req = two_row_table.size_request ();
1107
1108         // height required to show all normal buttons
1109
1110         hNormal = /*req.height*/ 48 + extra_height;
1111
1112         // these heights are all just larger than normal. no more
1113         // elements are visible (yet).
1114
1115         hLarger = hNormal + 50;
1116         hLarge = hNormal + 150;
1117         hLargest = hNormal + 250;
1118
1119         // height required to show track name
1120
1121         hSmall = 27;
1122 }
1123
1124 void
1125 TimeAxisView::show_name_label ()
1126 {
1127         if (!(name_packing & NameLabelPacked)) {
1128                 name_hbox.pack_start (name_label, true, true);
1129                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1130                 name_hbox.show ();
1131                 name_label.show ();
1132         }
1133 }
1134
1135 void
1136 TimeAxisView::show_name_entry ()
1137 {
1138         if (!(name_packing & NameEntryPacked)) {
1139                 name_hbox.pack_start (name_entry, true, true);
1140                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1141                 name_hbox.show ();
1142                 name_entry.show ();
1143         }
1144 }
1145
1146 void
1147 TimeAxisView::hide_name_label ()
1148 {
1149         if (name_packing & NameLabelPacked) {
1150                 name_hbox.remove (name_label);
1151                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1152         }
1153 }
1154
1155 void
1156 TimeAxisView::hide_name_entry ()
1157 {
1158         if (name_packing & NameEntryPacked) {
1159                 name_hbox.remove (name_entry);
1160                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1161         }
1162 }
1163
1164 void
1165 TimeAxisView::color_handler ()
1166 {
1167         for (list<GhostRegion*>::iterator i=ghosts.begin(); i != ghosts.end(); i++ ) {
1168                 (*i)->set_colors();
1169         }
1170
1171         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1172
1173                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1174                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1175
1176                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1177                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1178
1179                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1180                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1181         }
1182
1183         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1184
1185                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1186                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1187
1188                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1189                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1190
1191                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1192                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1193         }
1194 }
1195
1196 /** @return Pair: TimeAxisView, layer index.
1197  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1198  * If the covering object is a child axis, then the child is returned.
1199  * TimeAxisView is 0 otherwise.
1200  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1201  * region display mode, otherwise 0.
1202  */
1203 std::pair<TimeAxisView*, layer_t>
1204 TimeAxisView::covers_y_position (double y)
1205 {
1206         if (hidden()) {
1207                 return std::make_pair ( (TimeAxisView *) 0, 0);
1208         }
1209
1210         if (_y_position <= y && y < (_y_position + height)) {
1211
1212                 /* work out the layer index if appropriate */
1213                 layer_t l = 0;
1214                 if (layer_display () == Stacked && view ()) {
1215                         /* compute layer */
1216                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1217                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1218                           returns a too-high value */
1219                         if (l >= view()->layers ()) {
1220                                 l = view()->layers() - 1;
1221                         }
1222                 }
1223
1224                 return std::make_pair (this, l);
1225         }
1226
1227         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1228
1229                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1230                 if (r.first) {
1231                         return r;
1232                 }
1233         }
1234
1235         return std::make_pair ( (TimeAxisView *) 0, 0);
1236 }
1237
1238 void
1239 TimeAxisView::show_feature_lines (const AnalysisFeatureList& pos)
1240 {
1241         analysis_features = pos;
1242         reshow_feature_lines ();
1243 }
1244
1245
1246 void
1247 TimeAxisView::hide_feature_lines ()
1248 {
1249         list<ArdourCanvas::SimpleLine*>::iterator l;
1250
1251         for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
1252                 (*l)->hide();
1253         }
1254 }
1255
1256 void
1257 TimeAxisView::reshow_feature_lines ()
1258 {
1259         while (feature_lines.size()< analysis_features.size()) {
1260                 ArdourCanvas::SimpleLine* l = new ArdourCanvas::SimpleLine (*_canvas_display);
1261                 l->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
1262                 feature_lines.push_back (l);
1263         }
1264
1265         while (feature_lines.size() > analysis_features.size()) {
1266                 ArdourCanvas::SimpleLine *line = feature_lines.back();
1267                 feature_lines.pop_back ();
1268                 delete line;
1269         }
1270
1271         AnalysisFeatureList::const_iterator i;
1272         list<ArdourCanvas::SimpleLine*>::iterator l;
1273
1274         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
1275                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
1276                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
1277                 (*l)->property_y1() = 0;
1278                 (*l)->property_y2() = current_height();
1279                 (*l)->show ();
1280         }
1281 }
1282
1283 bool
1284 TimeAxisView::resizer_button_press (GdkEventButton* event)
1285 {
1286         _resize_drag_start = event->y_root;
1287         return true;
1288 }
1289
1290 bool
1291 TimeAxisView::resizer_button_release (GdkEventButton*)
1292 {
1293         _resize_drag_start = -1;
1294         return true;
1295 }
1296
1297 void
1298 TimeAxisView::idle_resize (uint32_t h)
1299 {
1300         set_height (h);
1301 }
1302
1303 bool
1304 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1305 {
1306         if (_resize_drag_start < 0) {
1307                 return true;
1308         }
1309
1310         int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1311         _editor.add_to_idle_resize (this, delta);
1312         _resize_drag_start = ev->y_root;
1313
1314         return true;
1315 }
1316
1317 bool
1318 TimeAxisView::resizer_expose (GdkEventExpose* event)
1319 {
1320         int w, h, x, y, d;
1321         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1322         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1323         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1324
1325         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1326                         true,
1327                         event->area.x,
1328                         event->area.y,
1329                         event->area.width,
1330                         event->area.height);
1331
1332         win->get_geometry (x, y, w, h, d);
1333
1334         /* handle/line #1 */
1335
1336         win->draw_line (dark, 0, 0, w - 2, 0);
1337         win->draw_point (dark, 0, 1);
1338         win->draw_line (light, 1, 1, w - 1, 1);
1339         win->draw_point (light, w - 1, 0);
1340
1341         /* handle/line #2 */
1342
1343         win->draw_line (dark, 0, 4, w - 2, 4);
1344         win->draw_point (dark, 0, 5);
1345         win->draw_line (light, 1, 5, w - 1, 5);
1346         win->draw_point (light, w - 1, 4);
1347
1348         /* handle/line #3 */
1349
1350         win->draw_line (dark, 0, 8, w - 2, 8);
1351         win->draw_point (dark, 0, 9);
1352         win->draw_line (light, 1, 9, w - 1, 9);
1353         win->draw_point (light, w - 1, 8);
1354
1355         return true;
1356 }
1357