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 "public_editor.h"
  44 #include "time_axis_view.h"
  45 #include "region_view.h"
  46 #include "ghostregion.h"
  47 #include "simplerect.h"
  48 #include "simpleline.h"
  49 #include "selection.h"
  50 #include "keyboard.h"
  51 #include "rgb_macros.h"
  52 #include "utils.h"
  53 #include "streamview.h"
  54
  55 #include "i18n.h"
  56
  57 using namespace std;
  58 using namespace Gtk;
  59 using namespace Gdk;
  60 using namespace ARDOUR;
  61 using namespace PBD;
  62 using namespace Editing;
  63 using namespace ArdourCanvas;
  64 using Gtkmm2ext::Keyboard;
  65
  66 const double trim_handle_size = 6.0; /* pixels */
  67
  68 uint32_t TimeAxisView::hLargest = 0;
  69 uint32_t TimeAxisView::hLarge = 0;
  70 uint32_t TimeAxisView::hLarger = 0;
  71 uint32_t TimeAxisView::hNormal = 0;
  72 uint32_t TimeAxisView::hSmaller = 0;
  73 uint32_t TimeAxisView::hSmall = 0;
  74 bool TimeAxisView::need_size_info = true;
  75 int const TimeAxisView::_max_order = 512;
  76
  77 TimeAxisView::TimeAxisView (ARDOUR::Session& sess, PublicEditor& ed, TimeAxisView* rent, Canvas& /*canvas*/)
  78         : AxisView (sess),
  79           controls_table (2, 8),
  80           _y_position (0),
  81           _editor (ed),
  82           _order (0)
  83 {
  84         if (need_size_info) {
  85                 compute_controls_size_info ();
  86                 need_size_info = false;
  87         }
  88         _canvas_background = new Group (*ed.get_background_group (), 0.0, 0.0);
  89         _canvas_display = new Group (*ed.get_trackview_group (), 0.0, 0.0);
  90
  91         selection_group = new Group (*_canvas_display);
  92         selection_group->hide();
  93
  94         _ghost_group = new Group (*_canvas_display);
  95         _ghost_group->lower_to_bottom();
  96         _ghost_group->show();
  97
  98         control_parent = 0;
  99         display_menu = 0;
 100         size_menu = 0;
 101         _hidden = false;
 102         in_destructor = false;
 103         height = 0;
 104         _effective_height = 0;
 105         parent = rent;
 106         _has_state = false;
 107         last_name_entry_key_press_event = 0;
 108         name_packing = NamePackingBits (0);
 109         _resize_drag_start = -1;
 110
 111         /*
 112           Create the standard LHS Controls
 113           We create the top-level container and name add the name label here,
 114           subclasses can add to the layout as required
 115         */
 116
 117         name_entry.set_name ("EditorTrackNameDisplay");
 118         name_entry.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_release));
 119         name_entry.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_button_press));
 120         name_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_release));
 121         name_entry.signal_activate().connect (sigc::mem_fun(*this, &TimeAxisView::name_entry_activated));
 122         name_entry.signal_focus_in_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_in));
 123         name_entry.signal_focus_out_event().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_focus_out));
 124         Gtkmm2ext::set_size_request_to_display_given_text (name_entry, N_("gTortnam"), 10, 10); // just represents a short name
 125
 126         name_label.set_name ("TrackLabel");
 127         name_label.set_alignment (0.0, 0.5);
 128
 129         /* typically, either name_label OR name_entry are visible,
 130            but not both. its up to derived classes to show/hide them as they
 131            wish.
 132         */
 133
 134         name_hbox.show ();
 135
 136         controls_table.set_size_request (200);
 137         controls_table.set_border_width (2);
 138         controls_table.set_row_spacings (0);
 139         controls_table.set_col_spacings (0);
 140         controls_table.set_homogeneous (true);
 141
 142         controls_table.attach (name_hbox, 0, 5, 0, 1,  Gtk::FILL|Gtk::EXPAND,  Gtk::FILL|Gtk::EXPAND, 3, 0);
 143         controls_table.show_all ();
 144         controls_table.set_no_show_all ();
 145
 146         resizer.set_size_request (10, 10);
 147         resizer.set_name ("ResizeHandle");
 148         resizer.signal_expose_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_expose));
 149         resizer.signal_button_press_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_press));
 150         resizer.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_button_release));
 151         resizer.signal_motion_notify_event().connect (sigc::mem_fun (*this, &TimeAxisView::resizer_motion));
 152         resizer.set_events (Gdk::BUTTON_PRESS_MASK|
 153                         Gdk::BUTTON_RELEASE_MASK|
 154                         Gdk::POINTER_MOTION_MASK|
 155                         Gdk::SCROLL_MASK);
 156
 157         resizer_box.pack_start (resizer, false, false);
 158         resizer.show ();
 159         resizer_box.show();
 160
 161         HSeparator* separator = manage (new HSeparator());
 162
 163         controls_vbox.pack_start (controls_table, false, false);
 164         controls_vbox.pack_end (*separator, false, false);
 165         controls_vbox.pack_end (resizer_box, false, true);
 166         controls_vbox.show ();
 167
 168         //controls_ebox.set_name ("TimeAxisViewControlsBaseUnselected");
 169         controls_ebox.add (controls_vbox);
 170         controls_ebox.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|SCROLL_MASK);
 171         controls_ebox.set_flags (CAN_FOCUS);
 172
 173         controls_ebox.signal_button_release_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_button_release));
 174         controls_ebox.signal_scroll_event().connect (sigc::mem_fun (*this, &TimeAxisView::controls_ebox_scroll), true);
 175
 176         controls_hbox.pack_start (controls_ebox,true,true);
 177         controls_hbox.show ();
 178
 179         ColorsChanged.connect (sigc::mem_fun (*this, &TimeAxisView::color_handler));
 180 }
 181
 182 TimeAxisView::~TimeAxisView()
 183 {
 184         in_destructor = true;
 185
 186         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 187                 delete *i;
 188         }
 189
 190         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 191                 delete (*i)->rect;
 192                 delete (*i)->start_trim;
 193                 delete (*i)->end_trim;
 194
 195         }
 196
 197         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 198                 delete (*i)->rect;
 199                 delete (*i)->start_trim;
 200                 delete (*i)->end_trim;
 201         }
 202
 203         for (list<SimpleLine*>::iterator i = feature_lines.begin(); i != feature_lines.end(); ++i) {
 204                 delete (*i);
 205         }
 206
 207         delete selection_group;
 208         selection_group = 0;
 209
 210         delete _canvas_background;
 211         _canvas_background = 0;
 212
 213         delete _canvas_display;
 214         _canvas_display = 0;
 215
 216         delete display_menu;
 217         display_menu = 0;
 218 }
 219
 220 /** Display this TimeAxisView as the nth component of the parent box, at y.
 221 *
 222 * @param y y position.
 223 * @param nth index for this TimeAxisView, increased if this view has children.
 224 * @param parent parent component.
 225 * @return height of this TimeAxisView.
 226 */
 227 guint32
 228 TimeAxisView::show_at (double y, int& nth, VBox *parent)
 229 {
 230         if (control_parent) {
 231                 control_parent->reorder_child (controls_hbox, nth);
 232         } else {
 233                 control_parent = parent;
 234                 parent->pack_start (controls_hbox, false, false);
 235                 parent->reorder_child (controls_hbox, nth);
 236         }
 237
 238         _order = nth;
 239
 240         if (_y_position != y) {
 241                 _canvas_display->property_y () = y;
 242                 _canvas_background->property_y () = y;
 243                 /* silly canvas */
 244                 _canvas_display->move (0.0, 0.0);
 245                 _canvas_background->move (0.0, 0.0);
 246                 _y_position = y;
 247
 248         }
 249
 250         _canvas_background->raise_to_top ();
 251         _canvas_display->raise_to_top ();
 252
 253         if (_marked_for_display) {
 254                 controls_hbox.show ();
 255                 controls_ebox.show ();
 256                 _canvas_background->show ();
 257         }
 258
 259         _hidden = false;
 260
 261         _effective_height = current_height ();
 262
 263         /* now show children */
 264
 265         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 266                 if (canvas_item_visible ((*i)->_canvas_display)) {
 267                         ++nth;
 268                         _effective_height += (*i)->show_at (y + _effective_height, nth, parent);
 269                 }
 270         }
 271
 272         return _effective_height;
 273 }
 274
 275 void
 276 TimeAxisView::clip_to_viewport ()
 277 {
 278         if (_marked_for_display) {
 279                 if (_y_position + _effective_height < _editor.get_trackview_group_vertical_offset () || _y_position > _editor.get_trackview_group_vertical_offset () + _canvas_display->get_canvas()->get_height()) {
 280                         _canvas_background->hide ();
 281                         _canvas_display->hide ();
 282                         return;
 283                 }
 284                 _canvas_background->show ();
 285                 _canvas_display->show ();
 286         }
 287         return;
 288 }
 289
 290 bool
 291 TimeAxisView::controls_ebox_scroll (GdkEventScroll* ev)
 292 {
 293         if (Keyboard::some_magic_widget_has_focus()) {
 294                 return false;
 295         }
 296
 297         switch (ev->direction) {
 298         case GDK_SCROLL_UP:
 299                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 300                         step_height (true);
 301                         return true;
 302                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 303                         _editor.scroll_tracks_up_line();
 304                         return true;
 305                 }
 306                 break;
 307
 308         case GDK_SCROLL_DOWN:
 309                 if (Keyboard::modifier_state_equals (ev->state, Keyboard::TertiaryModifier)) {
 310                         step_height (false);
 311                         return true;
 312                 } else if (Keyboard::no_modifiers_active (ev->state)) {
 313                         _editor.scroll_tracks_down_line();
 314                         return true;
 315                 }
 316                 break;
 317
 318         default:
 319                 /* no handling for left/right, yet */
 320                 break;
 321         }
 322
 323         return false;
 324 }
 325
 326 bool
 327 TimeAxisView::controls_ebox_button_release (GdkEventButton* ev)
 328 {
 329         switch (ev->button) {
 330         case 1:
 331                 selection_click (ev);
 332                 break;
 333
 334         case 3:
 335                 popup_display_menu (ev->time);
 336                 break;
 337         }
 338
 339         return true;
 340 }
 341
 342 void
 343 TimeAxisView::selection_click (GdkEventButton* ev)
 344 {
 345         Selection::Operation op = ArdourKeyboard::selection_type (ev->state);
 346         _editor.set_selected_track (*this, op, false);
 347 }
 348
 349 void
 350 TimeAxisView::hide ()
 351 {
 352         if (_hidden) {
 353                 return;
 354         }
 355
 356         _canvas_display->hide ();
 357         _canvas_background->hide ();
 358
 359         if (control_parent) {
 360                 control_parent->remove (controls_hbox);
 361                 control_parent = 0;
 362         }
 363
 364         _y_position = -1;
 365         _hidden = true;
 366
 367         /* now hide children */
 368
 369         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 370                 (*i)->hide ();
 371         }
 372
 373         /* if its hidden, it cannot be selected */
 374
 375         _editor.get_selection().remove (this);
 376
 377         Hiding ();
 378 }
 379
 380 void
 381 TimeAxisView::step_height (bool bigger)
 382 {
 383         static const uint32_t step = 20;
 384
 385         if (bigger) {
 386                 set_height (height + step);
 387         } else {
 388                 if (height > step) {
 389                         set_height (std::max (height - step, hSmall));
 390                 } else if (height != hSmall) {
 391                         set_height (hSmall);
 392                 }
 393         }
 394 }
 395
 396 void
 397 TimeAxisView::set_heights (uint32_t h)
 398 {
 399         TrackSelection& ts (_editor.get_selection().tracks);
 400
 401         for (TrackSelection::iterator i = ts.begin(); i != ts.end(); ++i) {
 402                 (*i)->set_height (h);
 403         }
 404 }
 405
 406 void
 407 TimeAxisView::set_height(uint32_t h)
 408 {
 409         controls_ebox.property_height_request () = h;
 410         height = h;
 411
 412         for (list<GhostRegion*>::iterator i = ghosts.begin(); i != ghosts.end(); ++i) {
 413                 (*i)->set_height ();
 414         }
 415
 416         if (canvas_item_visible (selection_group)) {
 417                 /* resize the selection rect */
 418                 show_selection (_editor.get_selection().time);
 419         }
 420
 421         reshow_feature_lines ();
 422 }
 423
 424 bool
 425 TimeAxisView::name_entry_key_release (GdkEventKey* ev)
 426 {
 427         TrackViewList::iterator i;
 428
 429         switch (ev->keyval) {
 430         case GDK_Escape:
 431                 name_entry.select_region (0,0);
 432                 controls_ebox.grab_focus ();
 433                 name_entry_changed ();
 434                 return true;
 435
 436         /* Shift+Tab Keys Pressed. Note that for Shift+Tab, GDK actually
 437          * generates a different ev->keyval, rather than setting
 438          * ev->state.
 439          */
 440         case GDK_ISO_Left_Tab:
 441         case GDK_Tab:
 442         {
 443                 name_entry_changed ();
 444                 TrackViewList const & allviews = _editor.get_track_views ();
 445                 TrackViewList::const_iterator i = find (allviews.begin(), allviews.end(), this);
 446                 if (ev->keyval == GDK_Tab) {
 447                         if (i != allviews.end()) {
 448                                 do {
 449                                         if (++i == allviews.end()) {
 450                                                 return true;
 451                                         }
 452                                 } while((*i)->hidden());
 453                         }
 454                 } else {
 455                         if (i != allviews.begin()) {
 456                                 do {
 457                                         if (i == allviews.begin()) {
 458                                                 return true;
 459                                         }
 460                                         --i;
 461                                 } while ((*i)->hidden());
 462                         }
 463                 }
 464
 465
 466                 /* resize to show editable name display */
 467
 468                 if ((*i)->current_height() <= hSmaller) {
 469                         (*i)->set_height (hSmaller);
 470                 }
 471
 472                 (*i)->name_entry.grab_focus();
 473         }
 474         return true;
 475
 476         case GDK_Up:
 477         case GDK_Down:
 478                 name_entry_changed ();
 479                 return true;
 480
 481         default:
 482                 break;
 483         }
 484
 485 #ifdef TIMEOUT_NAME_EDIT
 486         /* adapt the timeout to reflect the user's typing speed */
 487
 488         guint32 name_entry_timeout;
 489
 490         if (last_name_entry_key_press_event) {
 491                 /* timeout is 1/2 second or 5 times their current inter-char typing speed */
 492                 name_entry_timeout = std::max (500U, (5 * (ev->time - last_name_entry_key_press_event)));
 493         } else {
 494                 /* start with a 1 second timeout */
 495                 name_entry_timeout = 1000;
 496         }
 497
 498         last_name_entry_key_press_event = ev->time;
 499
 500         /* wait 1 seconds and if no more keys are pressed, act as if they pressed enter */
 501
 502         name_entry_key_timeout.disconnect();
 503         name_entry_key_timeout = Glib::signal_timeout().connect (sigc::mem_fun (*this, &TimeAxisView::name_entry_key_timed_out), name_entry_timeout);
 504 #endif
 505
 506         return false;
 507 }
 508
 509 bool
 510 TimeAxisView::name_entry_focus_in (GdkEventFocus*)
 511 {
 512         name_entry.select_region (0, -1);
 513         name_entry.set_name ("EditorActiveTrackNameDisplay");
 514         return false;
 515 }
 516
 517 bool
 518 TimeAxisView::name_entry_focus_out (GdkEventFocus*)
 519 {
 520         /* clean up */
 521
 522         last_name_entry_key_press_event = 0;
 523         name_entry_key_timeout.disconnect ();
 524         name_entry.set_name ("EditorTrackNameDisplay");
 525         name_entry.select_region (0,0);
 526
 527         /* do the real stuff */
 528
 529         name_entry_changed ();
 530
 531         return false;
 532 }
 533
 534 bool
 535 TimeAxisView::name_entry_key_timed_out ()
 536 {
 537         name_entry_activated();
 538         return false;
 539 }
 540
 541 void
 542 TimeAxisView::name_entry_activated ()
 543 {
 544         controls_ebox.grab_focus();
 545 }
 546
 547 void
 548 TimeAxisView::name_entry_changed ()
 549 {
 550 }
 551
 552 bool
 553 TimeAxisView::name_entry_button_press (GdkEventButton *ev)
 554 {
 555         if (ev->button == 3) {
 556                 return true;
 557         }
 558         return false;
 559 }
 560
 561 bool
 562 TimeAxisView::name_entry_button_release (GdkEventButton *ev)
 563 {
 564         if (ev->button == 3) {
 565                 popup_display_menu (ev->time);
 566                 return true;
 567         }
 568         return false;
 569 }
 570
 571 void
 572 TimeAxisView::conditionally_add_to_selection ()
 573 {
 574         Selection& s (_editor.get_selection ());
 575
 576         if (!s.selected (this)) {
 577                 _editor.set_selected_track (*this, Selection::Set);
 578         }
 579 }
 580
 581 void
 582 TimeAxisView::popup_display_menu (guint32 when)
 583 {
 584         if (display_menu == 0) {
 585                 build_display_menu ();
 586         }
 587
 588         conditionally_add_to_selection ();
 589         display_menu->popup (1, when);
 590 }
 591
 592 gint
 593 TimeAxisView::size_click (GdkEventButton *ev)
 594 {
 595         conditionally_add_to_selection ();
 596         popup_size_menu (ev->time);
 597         return TRUE;
 598 }
 599
 600 void
 601 TimeAxisView::popup_size_menu (guint32 when)
 602 {
 603         if (size_menu == 0) {
 604                 build_size_menu ();
 605         }
 606         size_menu->popup (1, when);
 607 }
 608
 609 void
 610 TimeAxisView::set_selected (bool yn)
 611 {
 612         if (yn == _selected) {
 613                 return;
 614         }
 615
 616         Selectable::set_selected (yn);
 617
 618         if (_selected) {
 619                 controls_ebox.set_name (controls_base_selected_name);
 620                 controls_hbox.set_name (controls_base_selected_name);
 621                 controls_vbox.set_name (controls_base_selected_name);
 622                 /* propagate any existing selection, if the mode is right */
 623
 624                 if (_editor.current_mouse_mode() == Editing::MouseRange && !_editor.get_selection().time.empty()) {
 625                         show_selection (_editor.get_selection().time);
 626                 }
 627
 628         } else {
 629                 controls_ebox.set_name (controls_base_unselected_name);
 630                 controls_hbox.set_name (controls_base_unselected_name);
 631                 controls_vbox.set_name (controls_base_unselected_name);
 632                 hide_selection ();
 633
 634                 /* children will be set for the yn=true case. but when deselecting
 635                    the editor only has a list of top-level trackviews, so we
 636                    have to do this here.
 637                 */
 638
 639                 for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 640                         (*i)->set_selected (false);
 641                 }
 642         }
 643
 644         resizer.queue_draw ();
 645 }
 646
 647 void
 648 TimeAxisView::build_size_menu ()
 649 {
 650         using namespace Menu_Helpers;
 651
 652         size_menu = new Menu;
 653         size_menu->set_name ("ArdourContextMenu");
 654         MenuList& items = size_menu->items();
 655
 656         items.push_back (MenuElem (_("Largest"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLargest)));
 657         items.push_back (MenuElem (_("Large"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLarge)));
 658         items.push_back (MenuElem (_("Larger"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hLarger)));
 659         items.push_back (MenuElem (_("Normal"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hNormal)));
 660         items.push_back (MenuElem (_("Smaller"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights),hSmaller)));
 661         items.push_back (MenuElem (_("Small"), sigc::bind (sigc::mem_fun (*this, &TimeAxisView::set_heights), hSmall)));
 662 }
 663
 664 void
 665 TimeAxisView::build_display_menu ()
 666 {
 667         using namespace Menu_Helpers;
 668
 669         display_menu = new Menu;
 670         display_menu->set_name ("ArdourContextMenu");
 671
 672         // Just let implementing classes define what goes into the manu
 673 }
 674
 675 void
 676 TimeAxisView::set_samples_per_unit (double spu)
 677 {
 678         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 679                 (*i)->set_samples_per_unit (spu);
 680         }
 681
 682         AnalysisFeatureList::const_iterator i;
 683         list<ArdourCanvas::SimpleLine*>::iterator l;
 684
 685         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
 686                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
 687                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
 688         }
 689 }
 690
 691 void
 692 TimeAxisView::show_timestretch (nframes_t start, nframes_t end)
 693 {
 694         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 695                 (*i)->show_timestretch (start, end);
 696         }
 697 }
 698
 699 void
 700 TimeAxisView::hide_timestretch ()
 701 {
 702         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 703                 (*i)->hide_timestretch ();
 704         }
 705 }
 706
 707 void
 708 TimeAxisView::show_selection (TimeSelection& ts)
 709 {
 710         double x1;
 711         double x2;
 712         double y2;
 713         SelectionRect *rect;
 714
 715         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 716                 (*i)->show_selection (ts);
 717         }
 718
 719         if (canvas_item_visible (selection_group)) {
 720                 while (!used_selection_rects.empty()) {
 721                         free_selection_rects.push_front (used_selection_rects.front());
 722                         used_selection_rects.pop_front();
 723                         free_selection_rects.front()->rect->hide();
 724                         free_selection_rects.front()->start_trim->hide();
 725                         free_selection_rects.front()->end_trim->hide();
 726                 }
 727                 selection_group->hide();
 728         }
 729
 730         selection_group->show();
 731         selection_group->raise_to_top();
 732
 733         for (list<AudioRange>::iterator i = ts.begin(); i != ts.end(); ++i) {
 734                 nframes_t start, end, cnt;
 735
 736                 start = (*i).start;
 737                 end = (*i).end;
 738                 cnt = end - start + 1;
 739
 740                 rect = get_selection_rect ((*i).id);
 741
 742                 x1 = _editor.frame_to_unit (start);
 743                 x2 = _editor.frame_to_unit (start + cnt - 1);
 744                 y2 = current_height();
 745
 746                 rect->rect->property_x1() = x1;
 747                 rect->rect->property_y1() = 1.0;
 748                 rect->rect->property_x2() = x2;
 749                 rect->rect->property_y2() = y2;
 750
 751                 // trim boxes are at the top for selections
 752
 753                 if (x2 > x1) {
 754                         rect->start_trim->property_x1() = x1;
 755                         rect->start_trim->property_y1() = 1.0;
 756                         rect->start_trim->property_x2() = x1 + trim_handle_size;
 757                         rect->start_trim->property_y2() = 1.0 + trim_handle_size;
 758
 759                         rect->end_trim->property_x1() = x2 - trim_handle_size;
 760                         rect->end_trim->property_y1() = 1.0;
 761                         rect->end_trim->property_x2() = x2;
 762                         rect->end_trim->property_y2() = 1.0 + trim_handle_size;
 763
 764                         rect->start_trim->show();
 765                         rect->end_trim->show();
 766                 } else {
 767                         rect->start_trim->hide();
 768                         rect->end_trim->hide();
 769                 }
 770
 771                 rect->rect->show ();
 772                 used_selection_rects.push_back (rect);
 773         }
 774 }
 775
 776 void
 777 TimeAxisView::reshow_selection (TimeSelection& ts)
 778 {
 779         show_selection (ts);
 780
 781         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 782                 (*i)->show_selection (ts);
 783         }
 784 }
 785
 786 void
 787 TimeAxisView::hide_selection ()
 788 {
 789         if (canvas_item_visible (selection_group)) {
 790                 while (!used_selection_rects.empty()) {
 791                         free_selection_rects.push_front (used_selection_rects.front());
 792                         used_selection_rects.pop_front();
 793                         free_selection_rects.front()->rect->hide();
 794                         free_selection_rects.front()->start_trim->hide();
 795                         free_selection_rects.front()->end_trim->hide();
 796                 }
 797                 selection_group->hide();
 798         }
 799
 800         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
 801                 (*i)->hide_selection ();
 802         }
 803 }
 804
 805 void
 806 TimeAxisView::order_selection_trims (ArdourCanvas::Item *item, bool put_start_on_top)
 807 {
 808         /* find the selection rect this is for. we have the item corresponding to one
 809            of the trim handles.
 810          */
 811
 812         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 813                 if ((*i)->start_trim == item || (*i)->end_trim == item) {
 814
 815                         /* make one trim handle be "above" the other so that if they overlap,
 816                            the top one is the one last used.
 817                         */
 818
 819                         (*i)->rect->raise_to_top ();
 820                         (put_start_on_top ? (*i)->start_trim : (*i)->end_trim)->raise_to_top ();
 821                         (put_start_on_top ? (*i)->end_trim : (*i)->start_trim)->raise_to_top ();
 822
 823                         break;
 824                 }
 825         }
 826 }
 827
 828 SelectionRect *
 829 TimeAxisView::get_selection_rect (uint32_t id)
 830 {
 831         SelectionRect *rect;
 832
 833         /* check to see if we already have a visible rect for this particular selection ID */
 834
 835         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
 836                 if ((*i)->id == id) {
 837                         return (*i);
 838                 }
 839         }
 840
 841         /* ditto for the free rect list */
 842
 843         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
 844                 if ((*i)->id == id) {
 845                         SelectionRect* ret = (*i);
 846                         free_selection_rects.erase (i);
 847                         return ret;
 848                 }
 849         }
 850
 851         /* no existing matching rect, so go get a new one from the free list, or create one if there are none */
 852
 853         if (free_selection_rects.empty()) {
 854
 855                 rect = new SelectionRect;
 856
 857                 rect->rect = new SimpleRect (*selection_group);
 858                 rect->rect->property_x1() = 0.0;
 859                 rect->rect->property_y1() = 0.0;
 860                 rect->rect->property_x2() = 0.0;
 861                 rect->rect->property_y2() = 0.0;
 862                 rect->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
 863                 rect->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 864
 865                 rect->start_trim = new SimpleRect (*selection_group);
 866                 rect->start_trim->property_x1() = 0.0;
 867                 rect->start_trim->property_x2() = 0.0;
 868                 rect->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 869                 rect->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 870
 871                 rect->end_trim = new SimpleRect (*selection_group);
 872                 rect->end_trim->property_x1() = 0.0;
 873                 rect->end_trim->property_x2() = 0.0;
 874                 rect->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 875                 rect->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
 876
 877                 free_selection_rects.push_front (rect);
 878
 879                 rect->rect->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_rect_event), rect->rect, rect));
 880                 rect->start_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_start_trim_event), rect->rect, rect));
 881                 rect->end_trim->signal_event().connect (sigc::bind (sigc::mem_fun (_editor, &PublicEditor::canvas_selection_end_trim_event), rect->rect, rect));
 882         }
 883
 884         rect = free_selection_rects.front();
 885         rect->id = id;
 886         free_selection_rects.pop_front();
 887         return rect;
 888 }
 889
 890 struct null_deleter { void operator()(void const *) const {} };
 891
 892 bool
 893 TimeAxisView::is_child (TimeAxisView* tav)
 894 {
 895         return find (children.begin(), children.end(), boost::shared_ptr<TimeAxisView>(tav, null_deleter())) != children.end();
 896 }
 897
 898 void
 899 TimeAxisView::add_child (boost::shared_ptr<TimeAxisView> child)
 900 {
 901         children.push_back (child);
 902 }
 903
 904 void
 905 TimeAxisView::remove_child (boost::shared_ptr<TimeAxisView> child)
 906 {
 907         Children::iterator i;
 908
 909         if ((i = find (children.begin(), children.end(), child)) != children.end()) {
 910                 children.erase (i);
 911         }
 912 }
 913
 914 void
 915 TimeAxisView::get_selectables (nframes_t /*start*/, nframes_t /*end*/, double /*top*/, double /*bot*/, list<Selectable*>& /*result*/)
 916 {
 917         return;
 918 }
 919
 920 void
 921 TimeAxisView::get_inverted_selectables (Selection& /*sel*/, list<Selectable*>& /*result*/)
 922 {
 923         return;
 924 }
 925
 926 void
 927 TimeAxisView::add_ghost (RegionView* rv)
 928 {
 929         GhostRegion* gr = rv->add_ghost (*this);
 930
 931         if(gr) {
 932                 ghosts.push_back(gr);
 933                 gr->GoingAway.connect (sigc::mem_fun(*this, &TimeAxisView::erase_ghost));
 934         }
 935 }
 936
 937 void
 938 TimeAxisView::remove_ghost (RegionView* rv) {
 939         rv->remove_ghost_in (*this);
 940 }
 941
 942 void
 943 TimeAxisView::erase_ghost (GhostRegion* gr) {
 944         if(in_destructor) {
 945                 return;
 946         }
 947
 948         list<GhostRegion*>::iterator i;
 949
 950         for (i = ghosts.begin(); i != ghosts.end(); ++i) {
 951                 if ((*i) == gr) {
 952                         ghosts.erase (i);
 953                         break;
 954                 }
 955         }
 956 }
 957
 958 bool
 959 TimeAxisView::touched (double top, double bot)
 960 {
 961         /* remember: this is X Window - coordinate space starts in upper left and moves down.
 962           y_position is the "origin" or "top" of the track.
 963         */
 964
 965         double mybot = _y_position + current_height();
 966
 967         return ((_y_position <= bot && _y_position >= top) ||
 968                 ((mybot <= bot) && (top < mybot)) ||
 969                 (mybot >= bot && _y_position < top));
 970 }
 971
 972 void
 973 TimeAxisView::set_parent (TimeAxisView& p)
 974 {
 975         parent = &p;
 976 }
 977
 978 bool
 979 TimeAxisView::has_state () const
 980 {
 981         return _has_state;
 982 }
 983
 984 TimeAxisView*
 985 TimeAxisView::get_parent_with_state ()
 986 {
 987         if (parent == 0) {
 988                 return 0;
 989         }
 990
 991         if (parent->has_state()) {
 992                 return parent;
 993         }
 994
 995         return parent->get_parent_with_state ();
 996 }
 997
 998
 999 XMLNode&
1000 TimeAxisView::get_state ()
1001 {
1002         XMLNode* node = new XMLNode ("TAV-" + name());
1003         char buf[32];
1004
1005         snprintf (buf, sizeof(buf), "%u", height);
1006         node->add_property ("height", buf);
1007         node->add_property ("marked-for-display", (_marked_for_display ? "1" : "0"));
1008         return *node;
1009 }
1010
1011 int
1012 TimeAxisView::set_state (const XMLNode& node, int /*version*/)
1013 {
1014         const XMLProperty *prop;
1015
1016         if ((prop = node.property ("marked-for-display")) != 0) {
1017                 _marked_for_display = (prop->value() == "1");
1018         }
1019
1020         if ((prop = node.property ("track-height")) != 0) {
1021
1022                 if (prop->value() == "largest") {
1023                         set_height (hLargest);
1024                 } else if (prop->value() == "large") {
1025                         set_height (hLarge);
1026                 } else if (prop->value() == "larger") {
1027                         set_height (hLarger);
1028                 } else if (prop->value() == "normal") {
1029                         set_height (hNormal);
1030                 } else if (prop->value() == "smaller") {
1031                         set_height (hSmaller);
1032                 } else if (prop->value() == "small") {
1033                         set_height (hSmall);
1034                 } else {
1035                         error << string_compose(_("unknown track height name \"%1\" in XML GUI information"), prop->value()) << endmsg;
1036                         set_height (Normal);
1037                 }
1038
1039         } else if ((prop = node.property ("height")) != 0) {
1040
1041                 set_height (atoi (prop->value()));
1042
1043         } else {
1044
1045                 set_height (hNormal);
1046         }
1047
1048         return 0;
1049 }
1050
1051 void
1052 TimeAxisView::reset_height()
1053 {
1054         set_height (height);
1055
1056         for (Children::iterator i = children.begin(); i != children.end(); ++i) {
1057                 (*i)->set_height ((*i)->height);
1058         }
1059 }
1060
1061 void
1062 TimeAxisView::compute_controls_size_info ()
1063 {
1064         Gtk::Window window (Gtk::WINDOW_TOPLEVEL);
1065         Gtk::Table two_row_table (2, 8);
1066         Gtk::Table one_row_table (1, 8);
1067         Button* buttons[5];
1068         const int border_width = 2;
1069         const int extra_height = (2 * border_width)
1070                 //+ 2   // 2 pixels for the hseparator between TimeAxisView control areas
1071                 + 10; // resizer button (3 x 2 pixel elements + 2 x 2 pixel gaps)
1072
1073         window.add (one_row_table);
1074
1075         one_row_table.set_border_width (border_width);
1076         one_row_table.set_row_spacings (0);
1077         one_row_table.set_col_spacings (0);
1078         one_row_table.set_homogeneous (true);
1079
1080         two_row_table.set_border_width (border_width);
1081         two_row_table.set_row_spacings (0);
1082         two_row_table.set_col_spacings (0);
1083         two_row_table.set_homogeneous (true);
1084
1085         for (int i = 0; i < 5; ++i) {
1086                 buttons[i] = manage (new Button (X_("f")));
1087                 buttons[i]->set_name ("TrackMuteButton");
1088         }
1089
1090         one_row_table.attach (*buttons[0], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1091
1092         one_row_table.show_all ();
1093         Gtk::Requisition req(one_row_table.size_request ());
1094
1095
1096         // height required to show 1 row of buttons
1097
1098         hSmaller = req.height + extra_height;
1099
1100         window.remove ();
1101         window.add (two_row_table);
1102
1103         two_row_table.attach (*buttons[1], 5, 6, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1104         two_row_table.attach (*buttons[2], 6, 7, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1105         two_row_table.attach (*buttons[3], 7, 8, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1106         two_row_table.attach (*buttons[4], 8, 9, 0, 1, Gtk::FILL|Gtk::EXPAND, Gtk::FILL|Gtk::EXPAND, 0, 0);
1107
1108         two_row_table.show_all ();
1109         req = two_row_table.size_request ();
1110
1111         // height required to show all normal buttons
1112
1113         hNormal = /*req.height*/ 48 + extra_height;
1114
1115         // these heights are all just larger than normal. no more
1116         // elements are visible (yet).
1117
1118         hLarger = hNormal + 50;
1119         hLarge = hNormal + 150;
1120         hLargest = hNormal + 250;
1121
1122         // height required to show track name
1123
1124         hSmall = 27;
1125 }
1126
1127 void
1128 TimeAxisView::show_name_label ()
1129 {
1130         if (!(name_packing & NameLabelPacked)) {
1131                 name_hbox.pack_start (name_label, true, true);
1132                 name_packing = NamePackingBits (name_packing | NameLabelPacked);
1133                 name_hbox.show ();
1134                 name_label.show ();
1135         }
1136 }
1137
1138 void
1139 TimeAxisView::show_name_entry ()
1140 {
1141         if (!(name_packing & NameEntryPacked)) {
1142                 name_hbox.pack_start (name_entry, true, true);
1143                 name_packing = NamePackingBits (name_packing | NameEntryPacked);
1144                 name_hbox.show ();
1145                 name_entry.show ();
1146         }
1147 }
1148
1149 void
1150 TimeAxisView::hide_name_label ()
1151 {
1152         if (name_packing & NameLabelPacked) {
1153                 name_hbox.remove (name_label);
1154                 name_packing = NamePackingBits (name_packing & ~NameLabelPacked);
1155         }
1156 }
1157
1158 void
1159 TimeAxisView::hide_name_entry ()
1160 {
1161         if (name_packing & NameEntryPacked) {
1162                 name_hbox.remove (name_entry);
1163                 name_packing = NamePackingBits (name_packing & ~NameEntryPacked);
1164         }
1165 }
1166
1167 void
1168 TimeAxisView::color_handler ()
1169 {
1170         for (list<GhostRegion*>::iterator i=ghosts.begin(); i != ghosts.end(); i++ ) {
1171                 (*i)->set_colors();
1172         }
1173
1174         for (list<SelectionRect*>::iterator i = used_selection_rects.begin(); i != used_selection_rects.end(); ++i) {
1175
1176                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1177                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1178
1179                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1180                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1181
1182                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1183                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1184         }
1185
1186         for (list<SelectionRect*>::iterator i = free_selection_rects.begin(); i != free_selection_rects.end(); ++i) {
1187
1188                 (*i)->rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_SelectionRect.get();
1189                 (*i)->rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1190
1191                 (*i)->start_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1192                 (*i)->start_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1193
1194                 (*i)->end_trim->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1195                 (*i)->end_trim->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_Selection.get();
1196         }
1197 }
1198
1199 /** @return Pair: TimeAxisView, layer index.
1200  * TimeAxisView is non-0 if this object covers y, or one of its children does.
1201  * If the covering object is a child axis, then the child is returned.
1202  * TimeAxisView is 0 otherwise.
1203  * Layer index is the layer number if the TimeAxisView is valid and is in stacked
1204  * region display mode, otherwise 0.
1205  */
1206 std::pair<TimeAxisView*, layer_t>
1207 TimeAxisView::covers_y_position (double y)
1208 {
1209         if (hidden()) {
1210                 return std::make_pair ( (TimeAxisView *) 0, 0);
1211         }
1212
1213         if (_y_position <= y && y < (_y_position + height)) {
1214
1215                 /* work out the layer index if appropriate */
1216                 layer_t l = 0;
1217                 if (layer_display () == Stacked && view ()) {
1218                         /* compute layer */
1219                         l = layer_t ((_y_position + height - y) / (view()->child_height ()));
1220                         /* clamp to max layers to be on the safe side; sometimes the above calculation
1221                           returns a too-high value */
1222                         if (l >= view()->layers ()) {
1223                                 l = view()->layers() - 1;
1224                         }
1225                 }
1226
1227                 return std::make_pair (this, l);
1228         }
1229
1230         for (Children::const_iterator i = children.begin(); i != children.end(); ++i) {
1231
1232                 std::pair<TimeAxisView*, int> const r = (*i)->covers_y_position (y);
1233                 if (r.first) {
1234                         return r;
1235                 }
1236         }
1237
1238         return std::make_pair ( (TimeAxisView *) 0, 0);
1239 }
1240
1241 void
1242 TimeAxisView::show_feature_lines (const AnalysisFeatureList& pos)
1243 {
1244         analysis_features = pos;
1245         reshow_feature_lines ();
1246 }
1247
1248
1249 void
1250 TimeAxisView::hide_feature_lines ()
1251 {
1252         list<ArdourCanvas::SimpleLine*>::iterator l;
1253
1254         for (l = feature_lines.begin(); l != feature_lines.end(); ++l) {
1255                 (*l)->hide();
1256         }
1257 }
1258
1259 void
1260 TimeAxisView::reshow_feature_lines ()
1261 {
1262         while (feature_lines.size()< analysis_features.size()) {
1263                 ArdourCanvas::SimpleLine* l = new ArdourCanvas::SimpleLine (*_canvas_display);
1264                 l->property_color_rgba() = (guint) ARDOUR_UI::config()->canvasvar_ZeroLine.get();
1265                 feature_lines.push_back (l);
1266         }
1267
1268         while (feature_lines.size() > analysis_features.size()) {
1269                 ArdourCanvas::SimpleLine *line = feature_lines.back();
1270                 feature_lines.pop_back ();
1271                 delete line;
1272         }
1273
1274         AnalysisFeatureList::const_iterator i;
1275         list<ArdourCanvas::SimpleLine*>::iterator l;
1276
1277         for (i = analysis_features.begin(), l = feature_lines.begin(); i != analysis_features.end() && l != feature_lines.end(); ++i, ++l) {
1278                 (*l)->property_x1() = _editor.frame_to_pixel (*i);
1279                 (*l)->property_x2() = _editor.frame_to_pixel (*i);
1280                 (*l)->property_y1() = 0;
1281                 (*l)->property_y2() = current_height();
1282                 (*l)->show ();
1283         }
1284 }
1285
1286 bool
1287 TimeAxisView::resizer_button_press (GdkEventButton* event)
1288 {
1289         _resize_drag_start = event->y_root;
1290         return true;
1291 }
1292
1293 bool
1294 TimeAxisView::resizer_button_release (GdkEventButton*)
1295 {
1296         _resize_drag_start = -1;
1297         return true;
1298 }
1299
1300 void
1301 TimeAxisView::idle_resize (uint32_t h)
1302 {
1303         set_height (h);
1304 }
1305
1306 bool
1307 TimeAxisView::resizer_motion (GdkEventMotion* ev)
1308 {
1309         if (_resize_drag_start < 0) {
1310                 return true;
1311         }
1312
1313         int32_t const delta = (int32_t) floor (ev->y_root - _resize_drag_start);
1314         _editor.add_to_idle_resize (this, delta);
1315         _resize_drag_start = ev->y_root;
1316
1317         return true;
1318 }
1319
1320 bool
1321 TimeAxisView::resizer_expose (GdkEventExpose* event)
1322 {
1323         int w, h, x, y, d;
1324         Glib::RefPtr<Gdk::Window> win (resizer.get_window());
1325         Glib::RefPtr<Gdk::GC> dark (resizer.get_style()->get_fg_gc (STATE_NORMAL));
1326         Glib::RefPtr<Gdk::GC> light (resizer.get_style()->get_bg_gc (STATE_NORMAL));
1327
1328         win->draw_rectangle (controls_ebox.get_style()->get_bg_gc(STATE_NORMAL),
1329                         true,
1330                         event->area.x,
1331                         event->area.y,
1332                         event->area.width,
1333                         event->area.height);
1334
1335         win->get_geometry (x, y, w, h, d);
1336
1337         /* handle/line #1 */
1338
1339         win->draw_line (dark, 0, 0, w - 2, 0);
1340         win->draw_point (dark, 0, 1);
1341         win->draw_line (light, 1, 1, w - 1, 1);
1342         win->draw_point (light, w - 1, 0);
1343
1344         /* handle/line #2 */
1345
1346         win->draw_line (dark, 0, 4, w - 2, 4);
1347         win->draw_point (dark, 0, 5);
1348         win->draw_line (light, 1, 5, w - 1, 5);
1349         win->draw_point (light, w - 1, 4);
1350
1351         /* handle/line #3 */
1352
1353         win->draw_line (dark, 0, 8, w - 2, 8);
1354         win->draw_point (dark, 0, 9);
1355         win->draw_line (light, 1, 9, w - 1, 9);
1356         win->draw_point (light, w - 1, 8);
1357
1358         return true;
1359 }
1360