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
  78 TimeAxisView::TimeAxisView (ARDOUR::Session* sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  79         : AxisView (sess),
  80           controls_table (2, 8),
  81           _y_position (0),
  82           _editor (ed),
  83           _order (0)
  84 {
  85         if (need_size_info) {
  86                 compute_controls_size_info ();
  87                 need_size_info = false;
  88         }
  89         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  90         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  91
  92         selection_group = new Group (*_canvas_display);
  93         selection_group->hide();
  94
  95         _ghost_group = new Group (*_canvas_display);
  96         _ghost_group->lower_to_bottom();
  97         _ghost_group->show();
  98
  99         control_parent = 0;
 100         display_menu = 0;
 101         size_menu = 0;
 102         _hidden = false;
 103         in_destructor = false;
 104         height = 0;
 105         _effective_height = 0;
 106         parent = rent;
 107         _has_state = false;
 108         last_name_entry_key_press_event = 0;
 109         name_packing = NamePackingBits (0);
 110         _resize_drag_start = -1;
 111
 112         /*
 113           Create the standard LHS Controls
 114           We create the top-level container and name add the name label here,
 115           subclasses can add to the layout as required
 116         */
 117
 118         name_entry.set_name ("EditorTrackNameDisplay");
 119         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 120         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 121         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 122         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 123         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 124         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 125         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 126
 127         name_label.set_name ("TrackLabel");
 128         name_label.set_alignment (0.0, 0.5);
 129
 130         /* typically, either name_label OR name_entry are visible,
 131            but not both. its up to derived classes to show/hide them as they
 132            wish.
 133         */
 134
 135         name_hbox.show ();
 136
 137         controls_table.set_size_request (200);
 138         controls_table.set_border_width (2);
 139         controls_table.set_row_spacings (0);
 140         controls_table.set_col_spacings (0);
 141         controls_table.set_homogeneous (true);
 142
 143         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 144         controls_table.show_all ();
 145         controls_table.set_no_show_all ();
 146
 147         resizer.set_size_request (10, 10);
 148         resizer.set_name ("ResizeHandle");
 149         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 150         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 151         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 152         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 153         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 154                         Gdk::BUTTON_RELEASE_MASK|
 155                         Gdk::POINTER_MOTION_MASK|
 156                         Gdk::SCROLL_MASK);
 157
 158         resizer_box.pack_start (resizer, false, false);
 159         resizer.show ();
 160         resizer_box.show();
 161
 162         HSeparator* separator = manage (new HSeparator());
 163
 164         controls_vbox.pack_start (controls_table, false, false);
 165         controls_vbox.pack_end (*separator, false, false);
 166         controls_vbox.pack_end (resizer_box, false, true);
 167         controls_vbox.show ();
 168
 169         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 170         controls_ebox.add (controls_vbox);
 171         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 172         controls_ebox.set_flags (CAN_FOCUS);
 173
 174         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 175         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 176
 177         controls_hbox.pack_start (controls_ebox,true,true);
 178         controls_hbox.show ();
 179
 180         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 181 }
 182
 183 TimeAxisView::~TimeAxisView()
 184 {
 185         in_destructor = true;
 186
 187         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 188                 delete *i;
 189         }
 190
 191         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 192                 delete (*i)->rect;
 193                 delete (*i)->start_trim;
 194                 delete (*i)->end_trim;
 195
 196         }
 197
 198         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 199                 delete (*i)->rect;
 200                 delete (*i)->start_trim;
 201                 delete (*i)->end_trim;
 202         }
 203
 204         for (list<SimpleLine*>::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
 205                 delete (*i);
 206         }
 207
 208         delete selection_group;
 209         selection_group = 0;
 210
 211         delete _canvas_background;
 212         _canvas_background = 0;
 213
 214         delete _canvas_display;
 215         _canvas_display = 0;
 216
 217         delete display_menu;
 218         display_menu = 0;
 219 }
 220
 221 /** Display this TimeAxisView as the nth component of the parent box, at y.
 222 *
 223 * @param y y position.
 224 * @param nth index for this TimeAxisView, increased if this view has children.
 225 * @param parent parent component.
 226 * @return height of this TimeAxisView.
 227 */
 228 guint32
 229 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 230 {
 231         if (control_parent) {
 232                 control_parent->reorder_child (controls_hbox, nth);
 233         } else {
 234                 control_parent = parent;
 235                 parent->pack_start (controls_hbox, false, false);
 236                 parent->reorder_child (controls_hbox, nth);
 237         }
 238
 239         _order = nth;
 240
 241         if (_y_position != y) {
 242                 _canvas_display->property_y () = y;
 243                 _canvas_background->property_y () = y;
 244                 /* silly canvas */
 245                 _canvas_display->move (0.0, 0.0);
 246                 _canvas_background->move (0.0, 0.0);
 247                 _y_position = y;
 248
 249         }
 250
 251         _canvas_background->raise_to_top ();
 252         _canvas_display->raise_to_top ();
 253
 254         if (_marked_for_display) {
 255                 controls_hbox.show ();
 256                 controls_ebox.show ();
 257                 _canvas_background->show ();
 258         }
 259
 260         _hidden = false;
 261
 262         _effective_height = current_height ();
 263
 264         /* now show children */
 265
 266         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 267                 if (canvas_item_visible ((*i)->_canvas_display)) {
 268                         ++nth;
 269                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 270                 }
 271         }
 272
 273         return _effective_height;
 274 }
 275
 276 void
 277 TimeAxisView::clip_to_viewport ()
 278 {
 279         if (_marked_for_display) {
 280                 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()) {
 281                         _canvas_background->hide ();
 282                         _canvas_display->hide ();
 283                         return;
 284                 }
 285                 _canvas_background->show ();
 286                 _canvas_display->show ();
 287         }
 288         return;
 289 }
 290
 291 bool
 292 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 293 {
 294         if (Keyboard::some_magic_widget_has_focus()) {
 295                 return false;
 296         }
 297
 298         switch (ev->direction) {
 299         case GDK_SCROLL_UP:
 300                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 301                         step_height (true);
 302                         return true;
 303                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 304                         _editor.scroll_tracks_up_line();
 305                         return true;
 306                 }
 307                 break;
 308
 309         case GDK_SCROLL_DOWN:
 310                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 311                         step_height (false);
 312                         return true;
 313                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 314                         _editor.scroll_tracks_down_line();
 315                         return true;
 316                 }
 317                 break;
 318
 319         default:
 320                 /* no handling for left/right, yet */
 321                 break;
 322         }
 323
 324         return false;
 325 }
 326
 327 bool
 328 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 329 {
 330         switch (ev->button) {
 331         case 1:
 332                 selection_click (ev);
 333                 break;
 334
 335         case 3:
 336                 popup_display_menu (ev->time);
 337                 break;
 338         }
 339
 340         return true;
 341 }
 342
 343 void
 344 TimeAxisView::selection_click (GdkEventButton* ev)
 345 {
 346         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 347         _editor.set_selected_track (*this, op, false);
 348 }
 349
 350 void
 351 TimeAxisView::hide ()
 352 {
 353         if (_hidden) {
 354                 return;
 355         }
 356
 357         _canvas_display->hide ();
 358         _canvas_background->hide ();
 359
 360         if (control_parent) {
 361                 control_parent->remove (controls_hbox);
 362                 control_parent = 0;
 363         }
 364
 365         _y_position = -1;
 366         _hidden = true;
 367
 368         /* now hide children */
 369
 370         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 371                 (*i)->hide ();
 372         }
 373
 374         /* if its hidden, it cannot be selected */
 375
 376         _editor.get_selection().remove (this);
 377
 378         Hiding ();
 379 }
 380
 381 void
 382 TimeAxisView::step_height (bool bigger)
 383 {
 384         static const uint32_t step = 20;
 385
 386         if (bigger) {
 387                 set_height (height + step);
 388         } else {
 389                 if (height > step) {
 390                         set_height (std::max (height - step, hSmall));
 391                 } else if (height != hSmall) {
 392                         set_height (hSmall);
 393                 }
 394         }
 395 }
 396
 397 void
 398 TimeAxisView::set_heights (uint32_t h)
 399 {
 400         TrackSelection& ts (_editor.get_selection().tracks);
 401
 402         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 403                 (*i)->set_height (h);
 404         }
 405 }
 406
 407 void
 408 TimeAxisView::set_height(uint32_t h)
 409 {
 410         controls_ebox.property_height_request () = h;
 411         height = h;
 412
 413         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 414                 (*i)->set_height ();
 415         }
 416
 417         if (canvas_item_visible (selection_group)) {
 418                 /* resize the selection rect */
 419                 show_selection (_editor.get_selection().time);
 420         }
 421
 422         reshow_feature_lines ();
 423 }
 424
 425 bool
 426 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 427 {
 428         TrackViewList::iterator i;
 429
 430         switch (ev->keyval) {
 431         case GDK_Escape:
 432                 name_entry.select_region (0,0);
 433                 controls_ebox.grab_focus ();
 434                 name_entry_changed ();
 435                 return true;
 436
 437         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 438          * generates a different ev->keyval, rather than setting
 439          * ev->state.
 440          */
 441         case GDK_ISO_Left_Tab:
 442         case GDK_Tab:
 443         {
 444                 name_entry_changed ();
 445                 TrackViewList const & allviews = _editor.get_track_views ();
 446                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 447                 if (ev->keyval == GDK_Tab) {
 448                         if (i != allviews.end()) {
 449                                 do {
 450                                         if (++i == allviews.end()) {
 451                                                 return true;
 452                                         }
 453                                 } while((*i)->hidden());
 454                         }
 455                 } else {
 456                         if (i != allviews.begin()) {
 457                                 do {
 458                                         if (i == allviews.begin()) {
 459                                                 return true;
 460                                         }
 461                                         --i;
 462                                 } while ((*i)->hidden());
 463                         }
 464                 }
 465
 466
 467                 /* resize to show editable name display */
 468
 469                 if ((*i)->current_height() <= hSmaller) {
 470                         (*i)->set_height (hSmaller);
 471                 }
 472
 473                 (*i)->name_entry.grab_focus();
 474         }
 475         return true;
 476
 477         case GDK_Up:
 478         case GDK_Down:
 479                 name_entry_changed ();
 480                 return true;
 481
 482         default:
 483                 break;
 484         }
 485
 486 #ifdef TIMEOUT_NAME_EDIT
 487         /* adapt the timeout to reflect the user's typing speed */
 488
 489         guint32 name_entry_timeout;
 490
 491         if (last_name_entry_key_press_event) {
 492                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 493                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 494         } else {
 495                 /* start with a 1 second timeout */
 496                 name_entry_timeout = 1000;
 497         }
 498
 499         last_name_entry_key_press_event = ev->time;
 500
 501         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 502
 503         name_entry_key_timeout.disconnect();
 504         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 505 #endif
 506
 507         return false;
 508 }
 509
 510 bool
 511 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 512 {
 513         name_entry.select_region (0, -1);
 514         name_entry.set_name ("EditorActiveTrackNameDisplay");
 515         return false;
 516 }
 517
 518 bool
 519 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 520 {
 521         /* clean up */
 522
 523         last_name_entry_key_press_event = 0;
 524         name_entry_key_timeout.disconnect ();
 525         name_entry.set_name ("EditorTrackNameDisplay");
 526         name_entry.select_region (0,0);
 527
 528         /* do the real stuff */
 529
 530         name_entry_changed ();
 531
 532         return false;
 533 }
 534
 535 bool
 536 TimeAxisView::name_entry_key_timed_out ()
 537 {
 538         name_entry_activated();
 539         return false;
 540 }
 541
 542 void
 543 TimeAxisView::name_entry_activated ()
 544 {
 545         controls_ebox.grab_focus();
 546 }
 547
 548 void
 549 TimeAxisView::name_entry_changed ()
 550 {
 551 }
 552
 553 bool
 554 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 555 {
 556         if (ev->button == 3) {
 557                 return true;
 558         }
 559         return false;
 560 }
 561
 562 bool
 563 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 564 {
 565         if (ev->button == 3) {
 566                 popup_display_menu (ev->time);
 567                 return true;
 568         }
 569         return false;
 570 }
 571
 572 void
 573 TimeAxisView::conditionally_add_to_selection ()
 574 {
 575         Selection& s (_editor.get_selection ());
 576
 577         if (!s.selected (this)) {
 578                 _editor.set_selected_track (*this, Selection::Set);
 579         }
 580 }
 581
 582 void
 583 TimeAxisView::popup_display_menu (guint32 when)
 584 {
 585         if (display_menu == 0) {
 586                 build_display_menu ();
 587         }
 588
 589         conditionally_add_to_selection ();
 590         display_menu->popup (1, when);
 591 }
 592
 593 gint
 594 TimeAxisView::size_click (GdkEventButton *ev)
 595 {
 596         conditionally_add_to_selection ();
 597         popup_size_menu (ev->time);
 598         return TRUE;
 599 }
 600
 601 void
 602 TimeAxisView::popup_size_menu (guint32 when)
 603 {
 604         if (size_menu == 0) {
 605                 build_size_menu ();
 606         }
 607         size_menu->popup (1, when);
 608 }
 609
 610 void
 611 TimeAxisView::set_selected (bool yn)
 612 {
 613         if (yn == _selected) {
 614                 return;
 615         }
 616
 617         Selectable::set_selected (yn);
 618
 619         if (_selected) {
 620                 controls_ebox.set_name (controls_base_selected_name);
 621                 controls_hbox.set_name (controls_base_selected_name);
 622                 controls_vbox.set_name (controls_base_selected_name);
 623         } else {
 624                 controls_ebox.set_name (controls_base_unselected_name);
 625                 controls_hbox.set_name (controls_base_unselected_name);
 626                 controls_vbox.set_name (controls_base_unselected_name);
 627                 hide_selection ();
 628
 629                 /* children will be set for the yn=true case. but when deselecting
 630                    the editor only has a list of top-level trackviews, so we
 631                    have to do this here.
 632                 */
 633
 634                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 635                         (*i)->set_selected (false);
 636                 }
 637         }
 638
 639         resizer.queue_draw ();
 640 }
 641
 642 void
 643 TimeAxisView::build_size_menu ()
 644 {
 645         using namespace Menu_Helpers;
 646
 647         size_menu = new Menu;
 648         size_menu->set_name ("ArdourContextMenu");
 649         MenuList& items = size_menu->items();
 650
 651         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLargest)));
 652         items.push_back (MenuElem (_("Large"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLarge)));
 653         items.push_back (MenuElem (_("Larger"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLarger)));
 654         items.push_back (MenuElem (_("Normal"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hNormal)));
 655         items.push_back (MenuElem (_("Smaller"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights),hSmaller)));
 656         items.push_back (MenuElem (_("Small"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hSmall)));
 657 }
 658
 659 void
 660 TimeAxisView::build_display_menu ()
 661 {
 662         using namespace Menu_Helpers;
 663
 664         display_menu = new Menu;
 665         display_menu->set_name ("ArdourContextMenu");
 666
 667         // Just let implementing classes define what goes into the manu
 668 }
 669
 670 void
 671 TimeAxisView::set_samples_per_unit (double spu)
 672 {
 673         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 674                 (*i)->set_samples_per_unit (spu);
 675         }
 676
 677         AnalysisFeatureList::const_iterator i;
 678         list<ArdourCanvas::SimpleLine*>::iterator l;
 679
 680         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
 681                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
 682                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
 683         }
 684 }
 685
 686 void
 687 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 688 {
 689         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 690                 (*i)->show_timestretch (start, end);
 691         }
 692 }
 693
 694 void
 695 TimeAxisView::hide_timestretch ()
 696 {
 697         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 698                 (*i)->hide_timestretch ();
 699         }
 700 }
 701
 702 void
 703 TimeAxisView::show_selection (TimeSelection& ts)
 704 {
 705         double x1;
 706         double x2;
 707         double y2;
 708         SelectionRect *rect;
 709
 710         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 711                 (*i)->show_selection (ts);
 712         }
 713
 714         if (canvas_item_visible (selection_group)) {
 715                 while (!used_selection_rects.empty()) {
 716                         free_selection_rects.push_front (used_selection_rects.front());
 717                         used_selection_rects.pop_front();
 718                         free_selection_rects.front()->rect->hide();
 719                         free_selection_rects.front()->start_trim->hide();
 720                         free_selection_rects.front()->end_trim->hide();
 721                 }
 722                 selection_group->hide();
 723         }
 724
 725         selection_group->show();
 726         selection_group->raise_to_top();
 727
 728         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 729                 nframes_t start, end, cnt;
 730
 731                 start = (*i).start;
 732                 end = (*i).end;
 733                 cnt = end - start + 1;
 734
 735                 rect = get_selection_rect ((*i).id);
 736
 737                 x1 = _editor.frame_to_unit (start);
 738                 x2 = _editor.frame_to_unit (start + cnt - 1);
 739                 y2 = current_height();
 740
 741                 rect->rect->property_x1() = x1;
 742                 rect->rect->property_y1() = 1.0;
 743                 rect->rect->property_x2() = x2;
 744                 rect->rect->property_y2() = y2;
 745
 746                 // trim boxes are at the top for selections
 747
 748                 if (x2 > x1) {
 749                         rect->start_trim->property_x1() = x1;
 750                         rect->start_trim->property_y1() = 1.0;
 751                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 752                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 753
 754                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 755                         rect->end_trim->property_y1() = 1.0;
 756                         rect->end_trim->property_x2() = x2;
 757                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 758
 759                         rect->start_trim->show();
 760                         rect->end_trim->show();
 761                 } else {
 762                         rect->start_trim->hide();
 763                         rect->end_trim->hide();
 764                 }
 765
 766                 rect->rect->show ();
 767                 used_selection_rects.push_back (rect);
 768         }
 769 }
 770
 771 void
 772 TimeAxisView::reshow_selection (TimeSelection& ts)
 773 {
 774         show_selection (ts);
 775
 776         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 777                 (*i)->show_selection (ts);
 778         }
 779 }
 780
 781 void
 782 TimeAxisView::hide_selection ()
 783 {
 784         if (canvas_item_visible (selection_group)) {
 785                 while (!used_selection_rects.empty()) {
 786                         free_selection_rects.push_front (used_selection_rects.front());
 787                         used_selection_rects.pop_front();
 788                         free_selection_rects.front()->rect->hide();
 789                         free_selection_rects.front()->start_trim->hide();
 790                         free_selection_rects.front()->end_trim->hide();
 791                 }
 792                 selection_group->hide();
 793         }
 794
 795         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 796                 (*i)->hide_selection ();
 797         }
 798 }
 799
 800 void
 801 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 802 {
 803         /* find the selection rect this is for. we have the item corresponding to one
 804            of the trim handles.
 805          */
 806
 807         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 808                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 809
 810                         /* make one trim handle be "above" the other so that if they overlap,
 811                            the top one is the one last used.
 812                         */
 813
 814                         (*i)->rect->raise_to_top ();
 815                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 816                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 817
 818                         break;
 819                 }
 820         }
 821 }
 822
 823 SelectionRect *
 824 TimeAxisView::get_selection_rect (uint32_t id)
 825 {
 826         SelectionRect *rect;
 827
 828         /* check to see if we already have a visible rect for this particular selection ID */
 829
 830         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 831                 if ((*i)->id == id) {
 832                         return (*i);
 833                 }
 834         }
 835
 836         /* ditto for the free rect list */
 837
 838         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 839                 if ((*i)->id == id) {
 840                         SelectionRect* ret = (*i);
 841                         free_selection_rects.erase (i);
 842                         return ret;
 843                 }
 844         }
 845
 846         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 847
 848         if (free_selection_rects.empty()) {
 849
 850                 rect = new SelectionRect;
 851
 852                 rect->rect = new SimpleRect (*selection_group);
 853                 rect->rect->property_x1() = 0.0;
 854                 rect->rect->property_y1() = 0.0;
 855                 rect->rect->property_x2() = 0.0;
 856                 rect->rect->property_y2() = 0.0;
 857                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 858                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 859
 860                 rect->start_trim = new SimpleRect (*selection_group);
 861                 rect->start_trim->property_x1() = 0.0;
 862                 rect->start_trim->property_x2() = 0.0;
 863                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 864                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 865
 866                 rect->end_trim = new SimpleRect (*selection_group);
 867                 rect->end_trim->property_x1() = 0.0;
 868                 rect->end_trim->property_x2() = 0.0;
 869                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 870                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 871
 872                 free_selection_rects.push_front (rect);
 873
 874                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 875                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 876                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 877         }
 878
 879         rect = free_selection_rects.front();
 880         rect->id = id;
 881         free_selection_rects.pop_front();
 882         return rect;
 883 }
 884
 885 struct null_deleter { void operator()(void const *) const {} };
 886
 887 bool
 888 TimeAxisView::is_child (TimeAxisView* tav)
 889 {
 890         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 891 }
 892
 893 void
 894 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 895 {
 896         children.push_back (child);
 897 }
 898
 899 void
 900 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 901 {
 902         Children::iterator i;
 903
 904         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 905                 children.erase (i);
 906         }
 907 }
 908
 909 void
 910 TimeAxisView::get_selectables (nframes_t /*start*/, nframes_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 911 {
 912         return;
 913 }
 914
 915 void
 916 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 917 {
 918         return;
 919 }
 920
 921 void
 922 TimeAxisView::add_ghost (RegionView* rv)
 923 {
 924         GhostRegion* gr = rv->add_ghost (*this);
 925
 926         if(gr) {
 927                 ghosts.push_back(gr);
 928                 gr->CatchDeletion.connect (*this, ui_bind (&TimeAxisView::erase_ghost, this, _1), gui_context());
 929         }
 930 }
 931
 932 void
 933 TimeAxisView::remove_ghost (RegionView* rv) {
 934         rv->remove_ghost_in (*this);
 935 }
 936
 937 void
 938 TimeAxisView::erase_ghost (GhostRegion* gr) {
 939         if(in_destructor) {
 940                 return;
 941         }
 942
 943         list<GhostRegion*>::iterator i;
 944
 945         for (i = ghosts.begin(); i != ghosts.end(); ++i) {
 946                 if ((*i) == gr) {
 947                         ghosts.erase (i);
 948                         break;
 949                 }
 950         }
 951 }
 952
 953 bool
 954 TimeAxisView::touched (double top, double bot)
 955 {
 956         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 957           y_position is the "origin" or "top" of the track.
 958         */
 959
 960         double mybot = _y_position + current_height();
 961
 962         return ((_y_position <= bot && _y_position >= top) ||
 963                 ((mybot <= bot) && (top < mybot)) ||
 964                 (mybot >= bot && _y_position < top));
 965 }
 966
 967 void
 968 TimeAxisView::set_parent (TimeAxisView& p)
 969 {
 970         parent = &p;
 971 }
 972
 973 bool
 974 TimeAxisView::has_state () const
 975 {
 976         return _has_state;
 977 }
 978
 979 TimeAxisView*
 980 TimeAxisView::get_parent_with_state ()
 981 {
 982         if (parent == 0) {
 983                 return 0;
 984         }
 985
 986         if (parent->has_state()) {
 987                 return parent;
 988         }
 989
 990         return parent->get_parent_with_state ();
 991 }
 992
 993
 994 XMLNode&
 995 TimeAxisView::get_state ()
 996 {
 997         XMLNode* node = new XMLNode ("TAV-" + name());
 998         char buf[32];
 999
1000         snprintf (buf, sizeof(buf), "%u", height);
1001         node->add_property ("height", buf);
1002         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
1003         return *node;
1004 }
1005
1006 int
1007 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1008 {
1009         const XMLProperty *prop;
1010
1011         if ((prop = node.property ("marked-for-display")) != 0) {
1012                 _marked_for_display = (prop->value() == "1");
1013         }
1014
1015         if ((prop = node.property ("track-height")) != 0) {
1016
1017                 if (prop->value() == "largest") {
1018                         set_height (hLargest);
1019                 } else if (prop->value() == "large") {
1020                         set_height (hLarge);
1021                 } else if (prop->value() == "larger") {
1022                         set_height (hLarger);
1023                 } else if (prop->value() == "normal") {
1024                         set_height (hNormal);
1025                 } else if (prop->value() == "smaller") {
1026                         set_height (hSmaller);
1027                 } else if (prop->value() == "small") {
1028                         set_height (hSmall);
1029                 } else {
1030                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1031                         set_height (Normal);
1032                 }
1033
1034         } else if ((prop = node.property ("height")) != 0) {
1035
1036                 set_height (atoi (prop->value()));
1037
1038         } else {
1039
1040                 set_height (hNormal);
1041         }
1042
1043         return 0;
1044 }
1045
1046 void
1047 TimeAxisView::reset_height()
1048 {
1049         set_height (height);
1050
1051         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1052                 (*i)->set_height ((*i)->height);
1053         }
1054 }
1055
1056 void
1057 TimeAxisView::compute_controls_size_info ()
1058 {
1059         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1060         Gtk::Table two_row_table (2, 8);
1061         Gtk::Table one_row_table (1, 8);
1062         Button* buttons[5];
1063         const int border_width = 2;
1064         const int extra_height = (2 * border_width)
1065                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1066                 + 10; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1067
1068         window.add (one_row_table);
1069
1070         one_row_table.set_border_width (border_width);
1071         one_row_table.set_row_spacings (0);
1072         one_row_table.set_col_spacings (0);
1073         one_row_table.set_homogeneous (true);
1074
1075         two_row_table.set_border_width (border_width);
1076         two_row_table.set_row_spacings (0);
1077         two_row_table.set_col_spacings (0);
1078         two_row_table.set_homogeneous (true);
1079
1080         for (int i = 0; i < 5; ++i) {
1081                 buttons[i] = manage (new Button (X_("f")));
1082                 buttons[i]->set_name ("TrackMuteButton");
1083         }
1084
1085         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1086
1087         one_row_table.show_all ();
1088         Gtk::Requisition req(one_row_table.size_request ());
1089
1090
1091         // height required to show 1 row of buttons
1092
1093         hSmaller = req.height + extra_height;
1094
1095         window.remove ();
1096         window.add (two_row_table);
1097
1098         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1099         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1100         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1101         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1102
1103         two_row_table.show_all ();
1104         req = two_row_table.size_request ();
1105
1106         // height required to show all normal buttons
1107
1108         hNormal = /*req.height*/ 48 + extra_height;
1109
1110         // these heights are all just larger than normal. no more
1111         // elements are visible (yet).
1112
1113         hLarger = hNormal + 50;
1114         hLarge = hNormal + 150;
1115         hLargest = hNormal + 250;
1116
1117         // height required to show track name
1118
1119         hSmall = 27;
1120 }
1121
1122 void
1123 TimeAxisView::show_name_label ()
1124 {
1125         if (!(name_packing & NameLabelPacked)) {
1126                 name_hbox.pack_start (name_label, true, true);
1127                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1128                 name_hbox.show ();
1129                 name_label.show ();
1130         }
1131 }
1132
1133 void
1134 TimeAxisView::show_name_entry ()
1135 {
1136         if (!(name_packing & NameEntryPacked)) {
1137                 name_hbox.pack_start (name_entry, true, true);
1138                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1139                 name_hbox.show ();
1140                 name_entry.show ();
1141         }
1142 }
1143
1144 void
1145 TimeAxisView::hide_name_label ()
1146 {
1147         if (name_packing & NameLabelPacked) {
1148                 name_hbox.remove (name_label);
1149                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1150         }
1151 }
1152
1153 void
1154 TimeAxisView::hide_name_entry ()
1155 {
1156         if (name_packing & NameEntryPacked) {
1157                 name_hbox.remove (name_entry);
1158                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1159         }
1160 }
1161
1162 void
1163 TimeAxisView::color_handler ()
1164 {
1165         for (list<GhostRegion*>::iterator i=ghosts.begin(); i != ghosts.end(); i++ ) {
1166                 (*i)->set_colors();
1167         }
1168
1169         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1170
1171                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1172                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1173
1174                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1175                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1176
1177                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1178                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1179         }
1180
1181         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1182
1183                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1184                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1185
1186                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1187                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1188
1189                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1190                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1191         }
1192 }
1193
1194 /** @return Pair: TimeAxisView, layer index.
1195  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1196  * If the covering object is a child axis, then the child is returned.
1197  * TimeAxisView is 0 otherwise.
1198  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1199  * region display mode, otherwise 0.
1200  */
1201 std::pair<TimeAxisView*, layer_t>
1202 TimeAxisView::covers_y_position (double y)
1203 {
1204         if (hidden()) {
1205                 return std::make_pair ( (TimeAxisView *) 0, 0);
1206         }
1207
1208         if (_y_position <= y && y < (_y_position + height)) {
1209
1210                 /* work out the layer index if appropriate */
1211                 layer_t l = 0;
1212                 if (layer_display () == Stacked && view ()) {
1213                         /* compute layer */
1214                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1215                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1216                           returns a too-high value */
1217                         if (l >= view()->layers ()) {
1218                                 l = view()->layers() - 1;
1219                         }
1220                 }
1221
1222                 return std::make_pair (this, l);
1223         }
1224
1225         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1226
1227                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1228                 if (r.first) {
1229                         return r;
1230                 }
1231         }
1232
1233         return std::make_pair ( (TimeAxisView *) 0, 0);
1234 }
1235
1236 void
1237 TimeAxisView::show_feature_lines (const AnalysisFeatureList& pos)
1238 {
1239         analysis_features = pos;
1240         reshow_feature_lines ();
1241 }
1242
1243
1244 void
1245 TimeAxisView::hide_feature_lines ()
1246 {
1247         list<ArdourCanvas::SimpleLine*>::iterator l;
1248
1249         for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
1250                 (*l)->hide();
1251         }
1252 }
1253
1254 void
1255 TimeAxisView::reshow_feature_lines ()
1256 {
1257         while (feature_lines.size()< analysis_features.size()) {
1258                 ArdourCanvas::SimpleLine* l = new ArdourCanvas::SimpleLine (*_canvas_display);
1259                 l->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
1260                 feature_lines.push_back (l);
1261         }
1262
1263         while (feature_lines.size() > analysis_features.size()) {
1264                 ArdourCanvas::SimpleLine *line = feature_lines.back();
1265                 feature_lines.pop_back ();
1266                 delete line;
1267         }
1268
1269         AnalysisFeatureList::const_iterator i;
1270         list<ArdourCanvas::SimpleLine*>::iterator l;
1271
1272         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
1273                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
1274                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
1275                 (*l)->property_y1() = 0;
1276                 (*l)->property_y2() = current_height();
1277                 (*l)->show ();
1278         }
1279 }
1280
1281 bool
1282 TimeAxisView::resizer_button_press (GdkEventButton* event)
1283 {
1284         _resize_drag_start = event->y_root;
1285         return true;
1286 }
1287
1288 bool
1289 TimeAxisView::resizer_button_release (GdkEventButton*)
1290 {
1291         _resize_drag_start = -1;
1292         return true;
1293 }
1294
1295 void
1296 TimeAxisView::idle_resize (uint32_t h)
1297 {
1298         set_height (h);
1299 }
1300
1301 bool
1302 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1303 {
1304         if (_resize_drag_start < 0) {
1305                 return true;
1306         }
1307
1308         int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1309         _editor.add_to_idle_resize (this, delta);
1310         _resize_drag_start = ev->y_root;
1311
1312         return true;
1313 }
1314
1315 bool
1316 TimeAxisView::resizer_expose (GdkEventExpose* event)
1317 {
1318         int w, h, x, y, d;
1319         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1320         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1321         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1322
1323         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1324                         true,
1325                         event->area.x,
1326                         event->area.y,
1327                         event->area.width,
1328                         event->area.height);
1329
1330         win->get_geometry (x, y, w, h, d);
1331
1332         /* handle/line #1 */
1333
1334         win->draw_line (dark, 0, 0, w - 2, 0);
1335         win->draw_point (dark, 0, 1);
1336         win->draw_line (light, 1, 1, w - 1, 1);
1337         win->draw_point (light, w - 1, 0);
1338
1339         /* handle/line #2 */
1340
1341         win->draw_line (dark, 0, 4, w - 2, 4);
1342         win->draw_point (dark, 0, 5);
1343         win->draw_line (light, 1, 5, w - 1, 5);
1344         win->draw_point (light, w - 1, 4);
1345
1346         /* handle/line #3 */
1347
1348         win->draw_line (dark, 0, 8, w - 2, 8);
1349         win->draw_point (dark, 0, 9);
1350         win->draw_line (light, 1, 9, w - 1, 9);
1351         win->draw_point (light, w - 1, 8);
1352
1353         return true;
1354 }
1355