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