src/wx/timeline.cc

   1 /*
   2     Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "content_panel.h"
  22 #include "film_editor.h"
  23 #include "film_viewer.h"
  24 #include "timeline.h"
  25 #include "timeline_atmos_content_view.h"
  26 #include "timeline_audio_content_view.h"
  27 #include "timeline_labels_view.h"
  28 #include "timeline_reels_view.h"
  29 #include "timeline_text_content_view.h"
  30 #include "timeline_time_axis_view.h"
  31 #include "timeline_video_content_view.h"
  32 #include "wx_util.h"
  33 #include "lib/atmos_mxf_content.h"
  34 #include "lib/audio_content.h"
  35 #include "lib/film.h"
  36 #include "lib/image_content.h"
  37 #include "lib/playlist.h"
  38 #include "lib/scope_guard.h"
  39 #include "lib/text_content.h"
  40 #include "lib/timer.h"
  41 #include "lib/video_content.h"
  42 #include <dcp/warnings.h>
  43 LIBDCP_DISABLE_WARNINGS
  44 #include <wx/graphics.h>
  45 LIBDCP_ENABLE_WARNINGS
  46 #include <iterator>
  47 #include <list>
  48
  49
  50 using std::abs;
  51 using std::dynamic_pointer_cast;
  52 using std::list;
  53 using std::make_shared;
  54 using std::max;
  55 using std::min;
  56 using std::shared_ptr;
  57 using std::weak_ptr;
  58 using boost::bind;
  59 using boost::optional;
  60 using namespace dcpomatic;
  61 #if BOOST_VERSION >= 106100
  62 using namespace boost::placeholders;
  63 #endif
  64
  65
  66 /* 3 hours in 640 pixels */
  67 double const Timeline::_minimum_pixels_per_second = 640.0 / (60 * 60 * 3);
  68 int const Timeline::_minimum_pixels_per_track = 16;
  69
  70
  71 Timeline::Timeline(wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film, FilmViewer& viewer)
  72         : wxPanel (parent, wxID_ANY)
  73         , _labels_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  74         , _main_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  75         , _content_panel (cp)
  76         , _film (film)
  77         , _viewer (viewer)
  78         , _time_axis_view (new TimelineTimeAxisView (*this, 64))
  79         , _reels_view (new TimelineReelsView (*this, 32))
  80         , _labels_view (new TimelineLabelsView (*this))
  81         , _tracks (0)
  82         , _left_down (false)
  83         , _down_view_position (0)
  84         , _first_move (false)
  85         , _menu (this, viewer)
  86         , _snap (true)
  87         , _tool (SELECT)
  88         , _x_scroll_rate (16)
  89         , _y_scroll_rate (16)
  90         , _pixels_per_track (48)
  91         , _first_resize (true)
  92         , _timer (this)
  93 {
  94 #ifndef __WXOSX__
  95         _labels_canvas->SetDoubleBuffered (true);
  96         _main_canvas->SetDoubleBuffered (true);
  97 #endif
  98
  99         auto sizer = new wxBoxSizer (wxHORIZONTAL);
 100         sizer->Add (_labels_canvas, 0, wxEXPAND);
 101         _labels_canvas->SetMinSize (wxSize (_labels_view->bbox().width, -1));
 102         sizer->Add (_main_canvas, 1, wxEXPAND);
 103         SetSizer (sizer);
 104
 105         _labels_canvas->Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint_labels, this));
 106         _main_canvas->Bind   (wxEVT_PAINT,      boost::bind (&Timeline::paint_main,   this));
 107         _main_canvas->Bind   (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,    this, _1));
 108         _main_canvas->Bind   (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,      this, _1));
 109         _main_canvas->Bind   (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,   this, _1));
 110         _main_canvas->Bind   (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved,  this, _1));
 111         _main_canvas->Bind   (wxEVT_SIZE,       boost::bind (&Timeline::resized,      this));
 112         _main_canvas->Bind   (wxEVT_SCROLLWIN_TOP,        boost::bind (&Timeline::scrolled,     this, _1));
 113         _main_canvas->Bind   (wxEVT_SCROLLWIN_BOTTOM,     boost::bind (&Timeline::scrolled,     this, _1));
 114         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 115         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 116         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 117         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 118         _main_canvas->Bind   (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&Timeline::scrolled,     this, _1));
 119
 120         film_change (ChangeType::DONE, Film::Property::CONTENT);
 121
 122         SetMinSize (wxSize (640, 4 * pixels_per_track() + 96));
 123
 124         _film_changed_connection = film->Change.connect (bind (&Timeline::film_change, this, _1, _2));
 125         _film_content_change_connection = film->ContentChange.connect (bind (&Timeline::film_content_change, this, _1, _3, _4));
 126
 127         Bind (wxEVT_TIMER, boost::bind(&Timeline::update_playhead, this));
 128         _timer.Start (200, wxTIMER_CONTINUOUS);
 129
 130         setup_scrollbars ();
 131         _labels_canvas->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
 132 }
 133
 134
 135 void
 136 Timeline::update_playhead ()
 137 {
 138         Refresh ();
 139 }
 140
 141
 142 void
 143 Timeline::set_pixels_per_second (double pps)
 144 {
 145         _pixels_per_second = max (_minimum_pixels_per_second, pps);
 146 }
 147
 148
 149 void
 150 Timeline::paint_labels ()
 151 {
 152         wxPaintDC dc (_labels_canvas);
 153
 154         auto gc = wxGraphicsContext::Create (dc);
 155         if (!gc) {
 156                 return;
 157         }
 158
 159         ScopeGuard sg = [gc]() { delete gc; };
 160
 161         int vsx, vsy;
 162         _labels_canvas->GetViewStart (&vsx, &vsy);
 163         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate + tracks_y_offset());
 164
 165         _labels_view->paint (gc, {});
 166 }
 167
 168
 169 void
 170 Timeline::paint_main ()
 171 {
 172         wxPaintDC dc (_main_canvas);
 173         _main_canvas->DoPrepareDC (dc);
 174
 175         auto gc = wxGraphicsContext::Create (dc);
 176         if (!gc) {
 177                 return;
 178         }
 179
 180         ScopeGuard sg = [gc]() { delete gc; };
 181
 182         int vsx, vsy;
 183         _main_canvas->GetViewStart (&vsx, &vsy);
 184         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate);
 185
 186         gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
 187
 188         for (auto i: _views) {
 189
 190                 auto ic = dynamic_pointer_cast<TimelineContentView> (i);
 191
 192                 /* Find areas of overlap with other content views, so that we can plot them */
 193                 list<dcpomatic::Rect<int>> overlaps;
 194                 for (auto j: _views) {
 195                         auto jc = dynamic_pointer_cast<TimelineContentView> (j);
 196                         /* No overlap with non-content views, views on different tracks, audio views or non-active views */
 197                         if (!ic || !jc || i == j || ic->track() != jc->track() || ic->track().get_value_or(2) >= 2 || !ic->active() || !jc->active()) {
 198                                 continue;
 199                         }
 200
 201                         auto r = j->bbox().intersection(i->bbox());
 202                         if (r) {
 203                                 overlaps.push_back (r.get ());
 204                         }
 205                 }
 206
 207                 i->paint (gc, overlaps);
 208         }
 209
 210         if (_zoom_point) {
 211                 /* Translate back as _down_point and _zoom_point do not take scroll into account */
 212                 gc->Translate (vsx * _x_scroll_rate, vsy * _y_scroll_rate);
 213                 gc->SetPen(gui_is_dark() ? *wxWHITE_PEN : *wxBLACK_PEN);
 214                 gc->SetBrush (*wxTRANSPARENT_BRUSH);
 215                 gc->DrawRectangle (
 216                         min (_down_point.x, _zoom_point->x),
 217                         min (_down_point.y, _zoom_point->y),
 218                         abs (_down_point.x - _zoom_point->x),
 219                         abs (_down_point.y - _zoom_point->y)
 220                         );
 221         }
 222
 223         /* Playhead */
 224
 225         gc->SetPen (*wxRED_PEN);
 226         auto path = gc->CreatePath ();
 227         double const ph = _viewer.position().seconds() * pixels_per_second().get_value_or(0);
 228         path.MoveToPoint (ph, 0);
 229         path.AddLineToPoint (ph, pixels_per_track() * _tracks + 32);
 230         gc->StrokePath (path);
 231 }
 232
 233
 234 void
 235 Timeline::film_change (ChangeType type, Film::Property p)
 236 {
 237         if (type != ChangeType::DONE) {
 238                 return;
 239         }
 240
 241         if (p == Film::Property::CONTENT || p == Film::Property::REEL_TYPE || p == Film::Property::REEL_LENGTH) {
 242                 ensure_ui_thread ();
 243                 recreate_views ();
 244         } else if (p == Film::Property::CONTENT_ORDER) {
 245                 Refresh ();
 246         }
 247 }
 248
 249
 250 void
 251 Timeline::recreate_views ()
 252 {
 253         auto film = _film.lock ();
 254         if (!film) {
 255                 return;
 256         }
 257
 258         _views.clear ();
 259         _views.push_back (_time_axis_view);
 260         _views.push_back (_reels_view);
 261
 262         for (auto i: film->content ()) {
 263                 if (i->video) {
 264                         _views.push_back (make_shared<TimelineVideoContentView>(*this, i));
 265                 }
 266
 267                 if (i->audio && !i->audio->mapping().mapped_output_channels().empty ()) {
 268                         _views.push_back (make_shared<TimelineAudioContentView>(*this, i));
 269                 }
 270
 271                 for (auto j: i->text) {
 272                         _views.push_back (make_shared<TimelineTextContentView>(*this, i, j));
 273                 }
 274
 275                 if (i->atmos) {
 276                         _views.push_back (make_shared<TimelineAtmosContentView>(*this, i));
 277                 }
 278         }
 279
 280         assign_tracks ();
 281         setup_scrollbars ();
 282         Refresh ();
 283 }
 284
 285
 286 void
 287 Timeline::film_content_change (ChangeType type, int property, bool frequent)
 288 {
 289         if (type != ChangeType::DONE) {
 290                 return;
 291         }
 292
 293         ensure_ui_thread ();
 294
 295         if (property == AudioContentProperty::STREAMS || property == VideoContentProperty::FRAME_TYPE) {
 296                 recreate_views ();
 297         } else if (property == ContentProperty::POSITION || property == ContentProperty::LENGTH) {
 298                 _reels_view->force_redraw ();
 299         } else if (!frequent) {
 300                 setup_scrollbars ();
 301                 Refresh ();
 302         }
 303 }
 304
 305
 306 template <class T>
 307 int
 308 place (shared_ptr<const Film> film, TimelineViewList& views, int& tracks)
 309 {
 310         int const base = tracks;
 311
 312         for (auto i: views) {
 313                 if (!dynamic_pointer_cast<T>(i)) {
 314                         continue;
 315                 }
 316
 317                 auto cv = dynamic_pointer_cast<TimelineContentView> (i);
 318
 319                 int t = base;
 320
 321                 auto content = cv->content();
 322                 DCPTimePeriod const content_period (content->position(), content->end(film));
 323
 324                 while (true) {
 325                         auto j = views.begin();
 326                         while (j != views.end()) {
 327                                 auto test = dynamic_pointer_cast<T> (*j);
 328                                 if (!test) {
 329                                         ++j;
 330                                         continue;
 331                                 }
 332
 333                                 auto test_content = test->content();
 334                                 if (
 335                                         test->track() && test->track().get() == t &&
 336                                         content_period.overlap(DCPTimePeriod(test_content->position(), test_content->end(film)))) {
 337                                         /* we have an overlap on track `t' */
 338                                         ++t;
 339                                         break;
 340                                 }
 341
 342                                 ++j;
 343                         }
 344
 345                         if (j == views.end ()) {
 346                                 /* no overlap on `t' */
 347                                 break;
 348                         }
 349                 }
 350
 351                 cv->set_track (t);
 352                 tracks = max (tracks, t + 1);
 353         }
 354
 355         return tracks - base;
 356 }
 357
 358
 359 /** Compare the mapped output channels of two TimelineViews, so we can into
 360  *  order of first mapped DCP channel.
 361  */
 362 struct AudioMappingComparator {
 363         bool operator()(shared_ptr<TimelineView> a, shared_ptr<TimelineView> b) {
 364                 int la = -1;
 365                 auto cva = dynamic_pointer_cast<TimelineAudioContentView>(a);
 366                 if (cva) {
 367                         auto oc = cva->content()->audio->mapping().mapped_output_channels();
 368                         la = *min_element(boost::begin(oc), boost::end(oc));
 369                 }
 370                 int lb = -1;
 371                 auto cvb = dynamic_pointer_cast<TimelineAudioContentView>(b);
 372                 if (cvb) {
 373                         auto oc = cvb->content()->audio->mapping().mapped_output_channels();
 374                         lb = *min_element(boost::begin(oc), boost::end(oc));
 375                 }
 376                 return la < lb;
 377         }
 378 };
 379
 380
 381 void
 382 Timeline::assign_tracks ()
 383 {
 384         /* Tracks are:
 385            Video 1
 386            Video 2
 387            Video N
 388            Text 1
 389            Text 2
 390            Text N
 391            Atmos
 392            Audio 1
 393            Audio 2
 394            Audio N
 395         */
 396
 397         auto film = _film.lock ();
 398         DCPOMATIC_ASSERT (film);
 399
 400         _tracks = 0;
 401
 402         for (auto i: _views) {
 403                 auto c = dynamic_pointer_cast<TimelineContentView>(i);
 404                 if (c) {
 405                         c->unset_track ();
 406                 }
 407         }
 408
 409         int const video_tracks = place<TimelineVideoContentView> (film, _views, _tracks);
 410         int const text_tracks = place<TimelineTextContentView> (film, _views, _tracks);
 411
 412         /* Atmos */
 413
 414         bool have_atmos = false;
 415         for (auto i: _views) {
 416                 auto cv = dynamic_pointer_cast<TimelineAtmosContentView>(i);
 417                 if (cv) {
 418                         cv->set_track (_tracks);
 419                         have_atmos = true;
 420                 }
 421         }
 422
 423         if (have_atmos) {
 424                 ++_tracks;
 425         }
 426
 427         /* Audio.  We're sorting the views so that we get the audio views in order of increasing
 428            DCP channel index.
 429         */
 430
 431         auto views = _views;
 432         sort(views.begin(), views.end(), AudioMappingComparator());
 433         int const audio_tracks = place<TimelineAudioContentView> (film, views, _tracks);
 434
 435         _labels_view->set_video_tracks (video_tracks);
 436         _labels_view->set_audio_tracks (audio_tracks);
 437         _labels_view->set_text_tracks (text_tracks);
 438         _labels_view->set_atmos (have_atmos);
 439
 440         _time_axis_view->set_y (tracks());
 441         _reels_view->set_y (8);
 442 }
 443
 444
 445 int
 446 Timeline::tracks () const
 447 {
 448         return _tracks;
 449 }
 450
 451
 452 void
 453 Timeline::setup_scrollbars ()
 454 {
 455         auto film = _film.lock ();
 456         if (!film || !_pixels_per_second) {
 457                 return;
 458         }
 459
 460         int const h = tracks() * pixels_per_track() + tracks_y_offset() + _time_axis_view->bbox().height;
 461
 462         _labels_canvas->SetVirtualSize (_labels_view->bbox().width, h);
 463         _labels_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 464         _main_canvas->SetVirtualSize (*_pixels_per_second * film->length().seconds(), h);
 465         _main_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 466 }
 467
 468
 469 shared_ptr<TimelineView>
 470 Timeline::event_to_view (wxMouseEvent& ev)
 471 {
 472         /* Search backwards through views so that we find the uppermost one first */
 473         auto i = _views.rbegin();
 474
 475         int vsx, vsy;
 476         _main_canvas->GetViewStart (&vsx, &vsy);
 477         Position<int> const p (ev.GetX() + vsx * _x_scroll_rate, ev.GetY() + vsy * _y_scroll_rate);
 478
 479         while (i != _views.rend() && !(*i)->bbox().contains (p)) {
 480                 ++i;
 481         }
 482
 483         if (i == _views.rend ()) {
 484                 return {};
 485         }
 486
 487         return *i;
 488 }
 489
 490
 491 void
 492 Timeline::left_down (wxMouseEvent& ev)
 493 {
 494         _left_down = true;
 495         _down_point = ev.GetPosition ();
 496
 497         switch (_tool) {
 498         case SELECT:
 499                 left_down_select (ev);
 500                 break;
 501         case ZOOM:
 502         case ZOOM_ALL:
 503         case SNAP:
 504         case SEQUENCE:
 505                 /* Nothing to do */
 506                 break;
 507         }
 508 }
 509
 510
 511 void
 512 Timeline::left_down_select (wxMouseEvent& ev)
 513 {
 514         auto view = event_to_view (ev);
 515         auto content_view = dynamic_pointer_cast<TimelineContentView>(view);
 516
 517         _down_view.reset ();
 518
 519         if (content_view) {
 520                 _down_view = content_view;
 521                 _down_view_position = content_view->content()->position ();
 522         }
 523
 524         if (dynamic_pointer_cast<TimelineTimeAxisView>(view)) {
 525                 int vsx, vsy;
 526                 _main_canvas->GetViewStart(&vsx, &vsy);
 527                 _viewer.seek(DCPTime::from_seconds((ev.GetPosition().x + vsx * _x_scroll_rate) / _pixels_per_second.get_value_or(1)), true);
 528         }
 529
 530         for (auto i: _views) {
 531                 auto cv = dynamic_pointer_cast<TimelineContentView>(i);
 532                 if (!cv) {
 533                         continue;
 534                 }
 535
 536                 if (!ev.ShiftDown ()) {
 537                         cv->set_selected (view == i);
 538                 }
 539         }
 540
 541         if (content_view && ev.ShiftDown ()) {
 542                 content_view->set_selected (!content_view->selected ());
 543         }
 544
 545         _first_move = false;
 546
 547         if (_down_view) {
 548                 /* Pre-compute the points that we might snap to */
 549                 for (auto i: _views) {
 550                         auto cv = dynamic_pointer_cast<TimelineContentView>(i);
 551                         if (!cv || cv == _down_view || cv->content() == _down_view->content()) {
 552                                 continue;
 553                         }
 554
 555                         auto film = _film.lock ();
 556                         DCPOMATIC_ASSERT (film);
 557
 558                         _start_snaps.push_back (cv->content()->position());
 559                         _end_snaps.push_back (cv->content()->position());
 560                         _start_snaps.push_back (cv->content()->end(film));
 561                         _end_snaps.push_back (cv->content()->end(film));
 562
 563                         for (auto i: cv->content()->reel_split_points(film)) {
 564                                 _start_snaps.push_back (i);
 565                         }
 566                 }
 567
 568                 /* Tell everyone that things might change frequently during the drag */
 569                 _down_view->content()->set_change_signals_frequent (true);
 570         }
 571 }
 572
 573
 574 void
 575 Timeline::left_up (wxMouseEvent& ev)
 576 {
 577         _left_down = false;
 578
 579         switch (_tool) {
 580         case SELECT:
 581                 left_up_select (ev);
 582                 break;
 583         case ZOOM:
 584                 left_up_zoom (ev);
 585                 break;
 586         case ZOOM_ALL:
 587         case SNAP:
 588         case SEQUENCE:
 589                 break;
 590         }
 591 }
 592
 593
 594 void
 595 Timeline::left_up_select (wxMouseEvent& ev)
 596 {
 597         if (_down_view) {
 598                 _down_view->content()->set_change_signals_frequent (false);
 599         }
 600
 601         _content_panel->set_selection (selected_content ());
 602         /* Since we may have just set change signals back to `not-frequent', we have to
 603            make sure this position change is signalled, even if the position value has
 604            not changed since the last time it was set (with frequent=true).  This is
 605            a bit of a hack.
 606         */
 607         set_position_from_event (ev, true);
 608
 609         /* Clear up up the stuff we don't do during drag */
 610         assign_tracks ();
 611         setup_scrollbars ();
 612         Refresh ();
 613
 614         _start_snaps.clear ();
 615         _end_snaps.clear ();
 616 }
 617
 618
 619 void
 620 Timeline::left_up_zoom (wxMouseEvent& ev)
 621 {
 622         _zoom_point = ev.GetPosition ();
 623
 624         int vsx, vsy;
 625         _main_canvas->GetViewStart (&vsx, &vsy);
 626
 627         wxPoint top_left(min(_down_point.x, _zoom_point->x), min(_down_point.y, _zoom_point->y));
 628         wxPoint bottom_right(max(_down_point.x, _zoom_point->x), max(_down_point.y, _zoom_point->y));
 629
 630         if ((bottom_right.x - top_left.x) < 8 || (bottom_right.y - top_left.y) < 8) {
 631                 /* Very small zoom rectangle: we assume it wasn't intentional */
 632                 _zoom_point = optional<wxPoint> ();
 633                 Refresh ();
 634                 return;
 635         }
 636
 637         auto const time_left = DCPTime::from_seconds((top_left.x + vsx) / *_pixels_per_second);
 638         auto const time_right = DCPTime::from_seconds((bottom_right.x + vsx) / *_pixels_per_second);
 639         set_pixels_per_second (double(GetSize().GetWidth()) / (time_right.seconds() - time_left.seconds()));
 640
 641         double const tracks_top = double(top_left.y - tracks_y_offset()) / _pixels_per_track;
 642         double const tracks_bottom = double(bottom_right.y - tracks_y_offset()) / _pixels_per_track;
 643         set_pixels_per_track (lrint(GetSize().GetHeight() / (tracks_bottom - tracks_top)));
 644
 645         setup_scrollbars ();
 646         int const y = (tracks_top * _pixels_per_track + tracks_y_offset()) / _y_scroll_rate;
 647         _main_canvas->Scroll (time_left.seconds() * *_pixels_per_second / _x_scroll_rate, y);
 648         _labels_canvas->Scroll (0, y);
 649
 650         _zoom_point = optional<wxPoint> ();
 651         Refresh ();
 652 }
 653
 654
 655 void
 656 Timeline::set_pixels_per_track (int h)
 657 {
 658         _pixels_per_track = max(_minimum_pixels_per_track, h);
 659 }
 660
 661
 662 void
 663 Timeline::mouse_moved (wxMouseEvent& ev)
 664 {
 665         switch (_tool) {
 666         case SELECT:
 667                 mouse_moved_select (ev);
 668                 break;
 669         case ZOOM:
 670                 mouse_moved_zoom (ev);
 671                 break;
 672         case ZOOM_ALL:
 673         case SNAP:
 674         case SEQUENCE:
 675                 break;
 676         }
 677 }
 678
 679
 680 void
 681 Timeline::mouse_moved_select (wxMouseEvent& ev)
 682 {
 683         if (!_left_down) {
 684                 return;
 685         }
 686
 687         set_position_from_event (ev);
 688 }
 689
 690
 691 void
 692 Timeline::mouse_moved_zoom (wxMouseEvent& ev)
 693 {
 694         if (!_left_down) {
 695                 return;
 696         }
 697
 698         _zoom_point = ev.GetPosition ();
 699         Refresh ();
 700 }
 701
 702
 703 void
 704 Timeline::right_down (wxMouseEvent& ev)
 705 {
 706         switch (_tool) {
 707         case SELECT:
 708                 right_down_select (ev);
 709                 break;
 710         case ZOOM:
 711                 /* Zoom out */
 712                 set_pixels_per_second (*_pixels_per_second / 2);
 713                 set_pixels_per_track (_pixels_per_track / 2);
 714                 setup_scrollbars ();
 715                 Refresh ();
 716                 break;
 717         case ZOOM_ALL:
 718         case SNAP:
 719         case SEQUENCE:
 720                 break;
 721         }
 722 }
 723
 724
 725 void
 726 Timeline::right_down_select (wxMouseEvent& ev)
 727 {
 728         auto view = event_to_view (ev);
 729         auto cv = dynamic_pointer_cast<TimelineContentView> (view);
 730         if (!cv) {
 731                 return;
 732         }
 733
 734         if (!cv->selected ()) {
 735                 clear_selection ();
 736                 cv->set_selected (true);
 737         }
 738
 739         _menu.popup (_film, selected_content (), selected_views (), ev.GetPosition ());
 740 }
 741
 742
 743 void
 744 Timeline::maybe_snap (DCPTime a, DCPTime b, optional<DCPTime>& nearest_distance) const
 745 {
 746         auto const d = a - b;
 747         if (!nearest_distance || d.abs() < nearest_distance.get().abs()) {
 748                 nearest_distance = d;
 749         }
 750 }
 751
 752
 753 void
 754 Timeline::set_position_from_event (wxMouseEvent& ev, bool force_emit)
 755 {
 756         if (!_pixels_per_second) {
 757                 return;
 758         }
 759
 760         double const pps = _pixels_per_second.get ();
 761
 762         auto const p = ev.GetPosition();
 763
 764         if (!_first_move) {
 765                 /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
 766                    before the drag is considered to have started.
 767                 */
 768                 int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
 769                 if (dist < 8) {
 770                         return;
 771                 }
 772                 _first_move = true;
 773         }
 774
 775         if (!_down_view) {
 776                 return;
 777         }
 778
 779         auto new_position = _down_view_position + DCPTime::from_seconds ((p.x - _down_point.x) / pps);
 780
 781         auto film = _film.lock ();
 782         DCPOMATIC_ASSERT (film);
 783
 784         if (_snap) {
 785                 auto const new_end = new_position + _down_view->content()->length_after_trim(film);
 786                 /* Signed `distance' to nearest thing (i.e. negative is left on the timeline,
 787                    positive is right).
 788                 */
 789                 optional<DCPTime> nearest_distance;
 790
 791                 /* Find the nearest snap point */
 792
 793                 for (auto i: _start_snaps) {
 794                         maybe_snap (i, new_position, nearest_distance);
 795                 }
 796
 797                 for (auto i: _end_snaps) {
 798                         maybe_snap (i, new_end, nearest_distance);
 799                 }
 800
 801                 if (nearest_distance) {
 802                         /* Snap if it's close; `close' means within a proportion of the time on the timeline */
 803                         if (nearest_distance.get().abs() < DCPTime::from_seconds ((width() / pps) / 64)) {
 804                                 new_position += nearest_distance.get ();
 805                         }
 806                 }
 807         }
 808
 809         if (new_position < DCPTime ()) {
 810                 new_position = DCPTime ();
 811         }
 812
 813         _down_view->content()->set_position (film, new_position, force_emit);
 814
 815         film->set_sequence (false);
 816 }
 817
 818
 819 void
 820 Timeline::force_redraw (dcpomatic::Rect<int> const & r)
 821 {
 822         _main_canvas->RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 823 }
 824
 825
 826 shared_ptr<const Film>
 827 Timeline::film () const
 828 {
 829         return _film.lock ();
 830 }
 831
 832
 833 void
 834 Timeline::resized ()
 835 {
 836         if (_main_canvas->GetSize().GetWidth() > 0 && _first_resize) {
 837                 zoom_all ();
 838                 _first_resize = false;
 839         }
 840         setup_scrollbars ();
 841 }
 842
 843
 844 void
 845 Timeline::clear_selection ()
 846 {
 847         for (auto i: _views) {
 848                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView>(i);
 849                 if (cv) {
 850                         cv->set_selected (false);
 851                 }
 852         }
 853 }
 854
 855
 856 TimelineContentViewList
 857 Timeline::selected_views () const
 858 {
 859         TimelineContentViewList sel;
 860
 861         for (auto i: _views) {
 862                 auto cv = dynamic_pointer_cast<TimelineContentView>(i);
 863                 if (cv && cv->selected()) {
 864                         sel.push_back (cv);
 865                 }
 866         }
 867
 868         return sel;
 869 }
 870
 871
 872 ContentList
 873 Timeline::selected_content () const
 874 {
 875         ContentList sel;
 876
 877         for (auto i: selected_views()) {
 878                 sel.push_back(i->content());
 879         }
 880
 881         return sel;
 882 }
 883
 884
 885 void
 886 Timeline::set_selection (ContentList selection)
 887 {
 888         for (auto i: _views) {
 889                 auto cv = dynamic_pointer_cast<TimelineContentView> (i);
 890                 if (cv) {
 891                         cv->set_selected (find (selection.begin(), selection.end(), cv->content ()) != selection.end ());
 892                 }
 893         }
 894 }
 895
 896
 897 int
 898 Timeline::tracks_y_offset () const
 899 {
 900         return _reels_view->bbox().height + 4;
 901 }
 902
 903
 904 int
 905 Timeline::width () const
 906 {
 907         return _main_canvas->GetVirtualSize().GetWidth();
 908 }
 909
 910
 911 void
 912 Timeline::scrolled (wxScrollWinEvent& ev)
 913 {
 914         if (ev.GetOrientation() == wxVERTICAL) {
 915                 int x, y;
 916                 _main_canvas->GetViewStart (&x, &y);
 917                 _labels_canvas->Scroll (0, y);
 918         }
 919         ev.Skip ();
 920 }
 921
 922
 923 void
 924 Timeline::tool_clicked (Tool t)
 925 {
 926         switch (t) {
 927         case ZOOM:
 928         case SELECT:
 929                 _tool = t;
 930                 break;
 931         case ZOOM_ALL:
 932                 zoom_all ();
 933                 break;
 934         case SNAP:
 935         case SEQUENCE:
 936                 break;
 937         }
 938 }
 939
 940
 941 void
 942 Timeline::zoom_all ()
 943 {
 944         auto film = _film.lock ();
 945         DCPOMATIC_ASSERT (film);
 946         set_pixels_per_second ((_main_canvas->GetSize().GetWidth() - 32) / film->length().seconds());
 947         set_pixels_per_track ((_main_canvas->GetSize().GetHeight() - tracks_y_offset() - _time_axis_view->bbox().height - 32) / _tracks);
 948         setup_scrollbars ();
 949         _main_canvas->Scroll (0, 0);
 950         _labels_canvas->Scroll (0, 0);
 951         Refresh ();
 952 }
 953
 954
 955 void
 956 Timeline::keypress(wxKeyEvent const& event)
 957 {
 958         if (event.GetKeyCode() == WXK_DELETE) {
 959                 auto film = _film.lock();
 960                 film->remove_content(selected_content());
 961         }
 962 }
 963