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