src/wx/timeline.cc

   1 /*
   2     Copyright (C) 2013-2018 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 "film_editor.h"
  22 #include "timeline.h"
  23 #include "timeline_time_axis_view.h"
  24 #include "timeline_reels_view.h"
  25 #include "timeline_labels_view.h"
  26 #include "timeline_video_content_view.h"
  27 #include "timeline_audio_content_view.h"
  28 #include "timeline_subtitle_content_view.h"
  29 #include "timeline_atmos_content_view.h"
  30 #include "content_panel.h"
  31 #include "wx_util.h"
  32 #include "lib/film.h"
  33 #include "lib/playlist.h"
  34 #include "lib/image_content.h"
  35 #include "lib/timer.h"
  36 #include "lib/audio_content.h"
  37 #include "lib/subtitle_content.h"
  38 #include "lib/video_content.h"
  39 #include "lib/atmos_mxf_content.h"
  40 #include <wx/graphics.h>
  41 #include <boost/weak_ptr.hpp>
  42 #include <boost/foreach.hpp>
  43 #include <list>
  44 #include <iostream>
  45
  46 using std::list;
  47 using std::cout;
  48 using std::min;
  49 using std::max;
  50 using std::begin;
  51 using std::end;
  52 using boost::shared_ptr;
  53 using boost::weak_ptr;
  54 using boost::dynamic_pointer_cast;
  55 using boost::bind;
  56 using boost::optional;
  57
  58 /* 3 hours in 640 pixels */
  59 double const Timeline::_minimum_pixels_per_second = 640.0 / (60 * 60 * 3);
  60 int const Timeline::_minimum_pixels_per_track = 16;
  61
  62 Timeline::Timeline (wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film)
  63         : wxPanel (parent, wxID_ANY)
  64         , _labels_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  65         , _main_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  66         , _content_panel (cp)
  67         , _film (film)
  68         , _time_axis_view (new TimelineTimeAxisView (*this, 64))
  69         , _reels_view (new TimelineReelsView (*this, 32))
  70         , _labels_view (new TimelineLabelsView (*this))
  71         , _tracks (0)
  72         , _left_down (false)
  73         , _down_view_position (0)
  74         , _first_move (false)
  75         , _menu (this)
  76         , _snap (true)
  77         , _tool (SELECT)
  78         , _x_scroll_rate (16)
  79         , _y_scroll_rate (16)
  80         , _pixels_per_track (48)
  81         , _first_resize (true)
  82 {
  83 #ifndef __WXOSX__
  84         _labels_canvas->SetDoubleBuffered (true);
  85         _main_canvas->SetDoubleBuffered (true);
  86 #endif
  87
  88         wxSizer* sizer = new wxBoxSizer (wxHORIZONTAL);
  89         sizer->Add (_labels_canvas, 0, wxEXPAND);
  90         _labels_canvas->SetMinSize (wxSize (_labels_view->bbox().width, -1));
  91         sizer->Add (_main_canvas, 1, wxEXPAND);
  92         SetSizer (sizer);
  93
  94         _labels_canvas->Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint_labels, this));
  95         _main_canvas->Bind   (wxEVT_PAINT,      boost::bind (&Timeline::paint_main,   this));
  96         _main_canvas->Bind   (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,    this, _1));
  97         _main_canvas->Bind   (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,      this, _1));
  98         _main_canvas->Bind   (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,   this, _1));
  99         _main_canvas->Bind   (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved,  this, _1));
 100         _main_canvas->Bind   (wxEVT_SIZE,       boost::bind (&Timeline::resized,      this));
 101         _main_canvas->Bind   (wxEVT_SCROLLWIN_TOP,        boost::bind (&Timeline::scrolled,     this, _1));
 102         _main_canvas->Bind   (wxEVT_SCROLLWIN_BOTTOM,     boost::bind (&Timeline::scrolled,     this, _1));
 103         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 104         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 105         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 106         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 107         _main_canvas->Bind   (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&Timeline::scrolled,     this, _1));
 108
 109         film_changed (Film::CONTENT);
 110
 111         SetMinSize (wxSize (640, 4 * pixels_per_track() + 96));
 112
 113         _film_changed_connection = film->Changed.connect (bind (&Timeline::film_changed, this, _1));
 114         _film_content_changed_connection = film->ContentChanged.connect (bind (&Timeline::film_content_changed, this, _2, _3));
 115
 116         setup_scrollbars ();
 117         _labels_canvas->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
 118 }
 119
 120 void
 121 Timeline::set_pixels_per_second (double pps)
 122 {
 123         _pixels_per_second = max (_minimum_pixels_per_second, pps);
 124 }
 125
 126 void
 127 Timeline::paint_labels ()
 128 {
 129         wxPaintDC dc (_labels_canvas);
 130
 131         wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
 132         if (!gc) {
 133                 return;
 134         }
 135
 136         int vsx, vsy;
 137         _labels_canvas->GetViewStart (&vsx, &vsy);
 138         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate + tracks_y_offset());
 139
 140         _labels_view->paint (gc, list<dcpomatic::Rect<int> >());
 141
 142         delete gc;
 143 }
 144
 145 void
 146 Timeline::paint_main ()
 147 {
 148         wxPaintDC dc (_main_canvas);
 149         _main_canvas->DoPrepareDC (dc);
 150
 151         wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
 152         if (!gc) {
 153                 return;
 154         }
 155
 156         int vsx, vsy;
 157         _main_canvas->GetViewStart (&vsx, &vsy);
 158         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate);
 159
 160         gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
 161
 162         BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 163
 164                 shared_ptr<TimelineContentView> ic = dynamic_pointer_cast<TimelineContentView> (i);
 165
 166                 /* Find areas of overlap with other content views, so that we can plot them */
 167                 list<dcpomatic::Rect<int> > overlaps;
 168                 BOOST_FOREACH (shared_ptr<TimelineView> j, _views) {
 169                         shared_ptr<TimelineContentView> jc = dynamic_pointer_cast<TimelineContentView> (j);
 170                         /* No overlap with non-content views, views no different tracks, audio views or non-active views */
 171                         if (!ic || !jc || i == j || ic->track() != jc->track() || ic->track().get_value_or(2) >= 2 || !ic->active() || !jc->active()) {
 172                                 continue;
 173                         }
 174
 175                         optional<dcpomatic::Rect<int> > r = j->bbox().intersection (i->bbox());
 176                         if (r) {
 177                                 overlaps.push_back (r.get ());
 178                         }
 179                 }
 180
 181                 i->paint (gc, overlaps);
 182         }
 183
 184         if (_zoom_point) {
 185                 /* Translate back as _down_point and _zoom_point do not take scroll into account */
 186                 gc->Translate (vsx * _x_scroll_rate, vsy * _y_scroll_rate);
 187                 gc->SetPen (*wxBLACK_PEN);
 188                 gc->SetBrush (*wxTRANSPARENT_BRUSH);
 189                 gc->DrawRectangle (
 190                         min (_down_point.x, _zoom_point->x),
 191                         min (_down_point.y, _zoom_point->y),
 192                         fabs (_down_point.x - _zoom_point->x),
 193                         fabs (_down_point.y - _zoom_point->y)
 194                         );
 195         }
 196
 197         delete gc;
 198 }
 199
 200 void
 201 Timeline::film_changed (Film::Property p)
 202 {
 203         if (p == Film::CONTENT || p == Film::REEL_TYPE || p == Film::REEL_LENGTH) {
 204                 ensure_ui_thread ();
 205                 recreate_views ();
 206         } else if (p == Film::CONTENT_ORDER) {
 207                 Refresh ();
 208         }
 209 }
 210
 211 void
 212 Timeline::recreate_views ()
 213 {
 214         shared_ptr<const Film> film = _film.lock ();
 215         if (!film) {
 216                 return;
 217         }
 218
 219         _views.clear ();
 220         _views.push_back (_time_axis_view);
 221         _views.push_back (_reels_view);
 222
 223         BOOST_FOREACH (shared_ptr<Content> i, film->content ()) {
 224                 if (i->video) {
 225                         _views.push_back (shared_ptr<TimelineView> (new TimelineVideoContentView (*this, i)));
 226                 }
 227
 228                 if (i->audio && !i->audio->mapping().mapped_output_channels().empty ()) {
 229                         _views.push_back (shared_ptr<TimelineView> (new TimelineAudioContentView (*this, i)));
 230                 }
 231
 232                 if (i->subtitle) {
 233                         _views.push_back (shared_ptr<TimelineView> (new TimelineSubtitleContentView (*this, i)));
 234                 }
 235
 236                 if (dynamic_pointer_cast<AtmosMXFContent> (i)) {
 237                         _views.push_back (shared_ptr<TimelineView> (new TimelineAtmosContentView (*this, i)));
 238                 }
 239         }
 240
 241         assign_tracks ();
 242         setup_scrollbars ();
 243         Refresh ();
 244 }
 245
 246 void
 247 Timeline::film_content_changed (int property, bool frequent)
 248 {
 249         ensure_ui_thread ();
 250
 251         if (property == AudioContentProperty::STREAMS) {
 252                 recreate_views ();
 253         } else if (!frequent) {
 254                 setup_scrollbars ();
 255                 Refresh ();
 256         }
 257 }
 258
 259 template <class T>
 260 int
 261 place (TimelineViewList& views, int& tracks)
 262 {
 263         int const base = tracks;
 264
 265         BOOST_FOREACH (shared_ptr<TimelineView> i, views) {
 266                 if (!dynamic_pointer_cast<T>(i)) {
 267                         continue;
 268                 }
 269
 270                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (i);
 271
 272                 int t = base;
 273
 274                 shared_ptr<Content> content = cv->content();
 275                 DCPTimePeriod const content_period (content->position(), content->end());
 276
 277                 while (true) {
 278                         TimelineViewList::iterator j = views.begin();
 279                         while (j != views.end()) {
 280                                 shared_ptr<T> test = dynamic_pointer_cast<T> (*j);
 281                                 if (!test) {
 282                                         ++j;
 283                                         continue;
 284                                 }
 285
 286                                 shared_ptr<Content> test_content = test->content();
 287                                 if (
 288                                         test->track() && test->track().get() == t &&
 289                                         content_period.overlap(DCPTimePeriod(test_content->position(), test_content->end()))) {
 290                                         /* we have an overlap on track `t' */
 291                                         ++t;
 292                                         break;
 293                                 }
 294
 295                                 ++j;
 296                         }
 297
 298                         if (j == views.end ()) {
 299                                 /* no overlap on `t' */
 300                                 break;
 301                         }
 302                 }
 303
 304                 cv->set_track (t);
 305                 tracks = max (tracks, t + 1);
 306         }
 307
 308         return tracks - base;
 309 }
 310
 311 /** Compare the mapped output channels of two TimelineViews, so we can into
 312  *  order of first mapped DCP channel.
 313  */
 314 struct AudioMappingComparator {
 315         bool operator()(shared_ptr<TimelineView> a, shared_ptr<TimelineView> b) {
 316                 int la = -1;
 317                 shared_ptr<TimelineAudioContentView> cva = dynamic_pointer_cast<TimelineAudioContentView>(a);
 318                 if (cva) {
 319                         list<int> oc = cva->content()->audio->mapping().mapped_output_channels();
 320                         la = *min_element(begin(oc), end(oc));
 321                 }
 322                 int lb = -1;
 323                 shared_ptr<TimelineAudioContentView> cvb = dynamic_pointer_cast<TimelineAudioContentView>(b);
 324                 if (cvb) {
 325                         list<int> oc = cvb->content()->audio->mapping().mapped_output_channels();
 326                         lb = *min_element(begin(oc), end(oc));
 327                 }
 328                 return la < lb;
 329         }
 330 };
 331
 332 void
 333 Timeline::assign_tracks ()
 334 {
 335         /* Tracks are:
 336            Video (mono or left-eye)
 337            Video (right-eye)
 338            Subtitle 1
 339            Subtitle 2
 340            Subtitle N
 341            Atmos
 342            Audio 1
 343            Audio 2
 344            Audio N
 345         */
 346
 347         _tracks = 0;
 348
 349         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 350                 shared_ptr<TimelineContentView> c = dynamic_pointer_cast<TimelineContentView> (*i);
 351                 if (c) {
 352                         c->unset_track ();
 353                 }
 354         }
 355
 356         /* Video */
 357
 358         bool have_3d = false;
 359         BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 360                 shared_ptr<TimelineVideoContentView> cv = dynamic_pointer_cast<TimelineVideoContentView> (i);
 361                 if (!cv) {
 362                         continue;
 363                 }
 364
 365                 /* Video on tracks 0 and maybe 1 (left and right eye) */
 366                 if (cv->content()->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
 367                         cv->set_track (1);
 368                         _tracks = max (_tracks, 2);
 369                         have_3d = true;
 370                 } else {
 371                         cv->set_track (0);
 372                 }
 373         }
 374
 375         _tracks = max (_tracks, 1);
 376
 377         /* Subtitle */
 378
 379         int const subtitle_tracks = place<TimelineSubtitleContentView> (_views, _tracks);
 380
 381         /* Atmos */
 382
 383         bool have_atmos = false;
 384         BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 385                 shared_ptr<TimelineVideoContentView> cv = dynamic_pointer_cast<TimelineVideoContentView> (i);
 386                 if (!cv) {
 387                         continue;
 388                 }
 389                 if (dynamic_pointer_cast<TimelineAtmosContentView> (i)) {
 390                         cv->set_track (_tracks - 1);
 391                         have_atmos = true;
 392                 }
 393         }
 394
 395         if (have_atmos) {
 396                 ++_tracks;
 397         }
 398
 399         /* Audio.  We're sorting the views so that we get the audio views in order of increasing
 400            DCP channel index.
 401         */
 402
 403         TimelineViewList views = _views;
 404         sort(views.begin(), views.end(), AudioMappingComparator());
 405         int const audio_tracks = place<TimelineAudioContentView> (views, _tracks);
 406
 407         _labels_view->set_3d (have_3d);
 408         _labels_view->set_audio_tracks (audio_tracks);
 409         _labels_view->set_subtitle_tracks (subtitle_tracks);
 410         _labels_view->set_atmos (have_atmos);
 411
 412         _time_axis_view->set_y (tracks());
 413         _reels_view->set_y (8);
 414 }
 415
 416 int
 417 Timeline::tracks () const
 418 {
 419         return _tracks;
 420 }
 421
 422 void
 423 Timeline::setup_scrollbars ()
 424 {
 425         shared_ptr<const Film> film = _film.lock ();
 426         if (!film || !_pixels_per_second) {
 427                 return;
 428         }
 429
 430         int const h = tracks() * pixels_per_track() + tracks_y_offset() + _time_axis_view->bbox().height;
 431
 432         _labels_canvas->SetVirtualSize (_labels_view->bbox().width, h);
 433         _labels_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 434         _main_canvas->SetVirtualSize (*_pixels_per_second * film->length().seconds(), h);
 435         _main_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 436 }
 437
 438 shared_ptr<TimelineView>
 439 Timeline::event_to_view (wxMouseEvent& ev)
 440 {
 441         /* Search backwards through views so that we find the uppermost one first */
 442         TimelineViewList::reverse_iterator i = _views.rbegin();
 443         Position<int> const p (ev.GetX(), ev.GetY());
 444         while (i != _views.rend() && !(*i)->bbox().contains (p)) {
 445                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 446                 ++i;
 447         }
 448
 449         if (i == _views.rend ()) {
 450                 return shared_ptr<TimelineView> ();
 451         }
 452
 453         return *i;
 454 }
 455
 456 void
 457 Timeline::left_down (wxMouseEvent& ev)
 458 {
 459         _left_down = true;
 460         _down_point = ev.GetPosition ();
 461
 462         switch (_tool) {
 463         case SELECT:
 464                 left_down_select (ev);
 465                 break;
 466         case ZOOM:
 467         case ZOOM_ALL:
 468         case SNAP:
 469         case SEQUENCE:
 470                 /* Nothing to do */
 471                 break;
 472         }
 473 }
 474
 475 void
 476 Timeline::left_down_select (wxMouseEvent& ev)
 477 {
 478         shared_ptr<TimelineView> view = event_to_view (ev);
 479         shared_ptr<TimelineContentView> content_view = dynamic_pointer_cast<TimelineContentView> (view);
 480
 481         _down_view.reset ();
 482
 483         if (content_view) {
 484                 _down_view = content_view;
 485                 _down_view_position = content_view->content()->position ();
 486         }
 487
 488         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 489                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 490                 if (!cv) {
 491                         continue;
 492                 }
 493
 494                 if (!ev.ShiftDown ()) {
 495                         cv->set_selected (view == *i);
 496                 }
 497         }
 498
 499         if (content_view && ev.ShiftDown ()) {
 500                 content_view->set_selected (!content_view->selected ());
 501         }
 502
 503         _first_move = false;
 504
 505         if (_down_view) {
 506                 /* Pre-compute the points that we might snap to */
 507                 for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 508                         shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 509                         if (!cv || cv == _down_view || cv->content() == _down_view->content()) {
 510                                 continue;
 511                         }
 512
 513                         _start_snaps.push_back (cv->content()->position());
 514                         _end_snaps.push_back (cv->content()->position());
 515                         _start_snaps.push_back (cv->content()->end());
 516                         _end_snaps.push_back (cv->content()->end());
 517
 518                         BOOST_FOREACH (DCPTime i, cv->content()->reel_split_points()) {
 519                                 _start_snaps.push_back (i);
 520                         }
 521                 }
 522
 523                 /* Tell everyone that things might change frequently during the drag */
 524                 _down_view->content()->set_change_signals_frequent (true);
 525         }
 526 }
 527
 528 void
 529 Timeline::left_up (wxMouseEvent& ev)
 530 {
 531         _left_down = false;
 532
 533         switch (_tool) {
 534         case SELECT:
 535                 left_up_select (ev);
 536                 break;
 537         case ZOOM:
 538                 left_up_zoom (ev);
 539                 break;
 540         case ZOOM_ALL:
 541         case SNAP:
 542         case SEQUENCE:
 543                 break;
 544         }
 545 }
 546
 547 void
 548 Timeline::left_up_select (wxMouseEvent& ev)
 549 {
 550         if (_down_view) {
 551                 _down_view->content()->set_change_signals_frequent (false);
 552         }
 553
 554         _content_panel->set_selection (selected_content ());
 555         set_position_from_event (ev);
 556
 557         /* Clear up up the stuff we don't do during drag */
 558         assign_tracks ();
 559         setup_scrollbars ();
 560         Refresh ();
 561
 562         _start_snaps.clear ();
 563         _end_snaps.clear ();
 564 }
 565
 566 void
 567 Timeline::left_up_zoom (wxMouseEvent& ev)
 568 {
 569         _zoom_point = ev.GetPosition ();
 570
 571         int vsx, vsy;
 572         _main_canvas->GetViewStart (&vsx, &vsy);
 573
 574         wxPoint top_left(min(_down_point.x, _zoom_point->x), min(_down_point.y, _zoom_point->y));
 575         wxPoint bottom_right(max(_down_point.x, _zoom_point->x), max(_down_point.y, _zoom_point->y));
 576
 577         if ((bottom_right.x - top_left.x) < 8 || (bottom_right.y - top_left.y) < 8) {
 578                 /* Very small zoom rectangle: we assume it wasn't intentional */
 579                 return;
 580         }
 581
 582         DCPTime const time_left = DCPTime::from_seconds((top_left.x + vsx) / *_pixels_per_second);
 583         DCPTime const time_right = DCPTime::from_seconds((bottom_right.x + vsx) / *_pixels_per_second);
 584         set_pixels_per_second (double(GetSize().GetWidth()) / (time_right.seconds() - time_left.seconds()));
 585
 586         double const tracks_top = double(top_left.y - tracks_y_offset()) / _pixels_per_track;
 587         double const tracks_bottom = double(bottom_right.y - tracks_y_offset()) / _pixels_per_track;
 588         set_pixels_per_track (lrint(GetSize().GetHeight() / (tracks_bottom - tracks_top)));
 589
 590         setup_scrollbars ();
 591         int const y = (tracks_top * _pixels_per_track + tracks_y_offset()) / _y_scroll_rate;
 592         _main_canvas->Scroll (time_left.seconds() * *_pixels_per_second / _x_scroll_rate, y);
 593         _labels_canvas->Scroll (0, y);
 594
 595         _zoom_point = optional<wxPoint> ();
 596         Refresh ();
 597 }
 598
 599 void
 600 Timeline::set_pixels_per_track (int h)
 601 {
 602         _pixels_per_track = max(_minimum_pixels_per_track, h);
 603 }
 604
 605 void
 606 Timeline::mouse_moved (wxMouseEvent& ev)
 607 {
 608         switch (_tool) {
 609         case SELECT:
 610                 mouse_moved_select (ev);
 611                 break;
 612         case ZOOM:
 613                 mouse_moved_zoom (ev);
 614                 break;
 615         case ZOOM_ALL:
 616         case SNAP:
 617         case SEQUENCE:
 618                 break;
 619         }
 620 }
 621
 622 void
 623 Timeline::mouse_moved_select (wxMouseEvent& ev)
 624 {
 625         if (!_left_down) {
 626                 return;
 627         }
 628
 629         set_position_from_event (ev);
 630 }
 631
 632 void
 633 Timeline::mouse_moved_zoom (wxMouseEvent& ev)
 634 {
 635         if (!_left_down) {
 636                 return;
 637         }
 638
 639         _zoom_point = ev.GetPosition ();
 640         Refresh ();
 641 }
 642
 643 void
 644 Timeline::right_down (wxMouseEvent& ev)
 645 {
 646         switch (_tool) {
 647         case SELECT:
 648                 right_down_select (ev);
 649                 break;
 650         case ZOOM:
 651                 /* Zoom out */
 652                 set_pixels_per_second (*_pixels_per_second / 2);
 653                 set_pixels_per_track (_pixels_per_track / 2);
 654                 setup_scrollbars ();
 655                 Refresh ();
 656                 break;
 657         case ZOOM_ALL:
 658         case SNAP:
 659         case SEQUENCE:
 660                 break;
 661         }
 662 }
 663
 664 void
 665 Timeline::right_down_select (wxMouseEvent& ev)
 666 {
 667         shared_ptr<TimelineView> view = event_to_view (ev);
 668         shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (view);
 669         if (!cv) {
 670                 return;
 671         }
 672
 673         if (!cv->selected ()) {
 674                 clear_selection ();
 675                 cv->set_selected (true);
 676         }
 677
 678         _menu.popup (_film, selected_content (), selected_views (), ev.GetPosition ());
 679 }
 680
 681 void
 682 Timeline::maybe_snap (DCPTime a, DCPTime b, optional<DCPTime>& nearest_distance) const
 683 {
 684         DCPTime const d = a - b;
 685         if (!nearest_distance || d.abs() < nearest_distance.get().abs()) {
 686                 nearest_distance = d;
 687         }
 688 }
 689
 690 void
 691 Timeline::set_position_from_event (wxMouseEvent& ev)
 692 {
 693         if (!_pixels_per_second) {
 694                 return;
 695         }
 696
 697         double const pps = _pixels_per_second.get ();
 698
 699         wxPoint const p = ev.GetPosition();
 700
 701         if (!_first_move) {
 702                 /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
 703                    before the drag is considered to have started.
 704                 */
 705                 int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
 706                 if (dist < 8) {
 707                         return;
 708                 }
 709                 _first_move = true;
 710         }
 711
 712         if (!_down_view) {
 713                 return;
 714         }
 715
 716         DCPTime new_position = _down_view_position + DCPTime::from_seconds ((p.x - _down_point.x) / pps);
 717
 718         if (_snap) {
 719
 720                 DCPTime const new_end = new_position + _down_view->content()->length_after_trim();
 721                 /* Signed `distance' to nearest thing (i.e. negative is left on the timeline,
 722                    positive is right).
 723                 */
 724                 optional<DCPTime> nearest_distance;
 725
 726                 /* Find the nearest snap point */
 727
 728                 BOOST_FOREACH (DCPTime i, _start_snaps) {
 729                         maybe_snap (i, new_position, nearest_distance);
 730                 }
 731
 732                 BOOST_FOREACH (DCPTime i, _end_snaps) {
 733                         maybe_snap (i, new_end, nearest_distance);
 734                 }
 735
 736                 if (nearest_distance) {
 737                         /* Snap if it's close; `close' means within a proportion of the time on the timeline */
 738                         if (nearest_distance.get().abs() < DCPTime::from_seconds ((width() / pps) / 64)) {
 739                                 new_position += nearest_distance.get ();
 740                         }
 741                 }
 742         }
 743
 744         if (new_position < DCPTime ()) {
 745                 new_position = DCPTime ();
 746         }
 747
 748         _down_view->content()->set_position (new_position);
 749
 750         shared_ptr<Film> film = _film.lock ();
 751         DCPOMATIC_ASSERT (film);
 752         film->set_sequence (false);
 753 }
 754
 755 void
 756 Timeline::force_redraw (dcpomatic::Rect<int> const & r)
 757 {
 758         RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 759 }
 760
 761 shared_ptr<const Film>
 762 Timeline::film () const
 763 {
 764         return _film.lock ();
 765 }
 766
 767 void
 768 Timeline::resized ()
 769 {
 770         if (_main_canvas->GetSize().GetWidth() > 0 && _first_resize) {
 771                 zoom_all ();
 772                 _first_resize = false;
 773         }
 774         setup_scrollbars ();
 775 }
 776
 777 void
 778 Timeline::clear_selection ()
 779 {
 780         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 781                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 782                 if (cv) {
 783                         cv->set_selected (false);
 784                 }
 785         }
 786 }
 787
 788 TimelineContentViewList
 789 Timeline::selected_views () const
 790 {
 791         TimelineContentViewList sel;
 792
 793         for (TimelineViewList::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 794                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 795                 if (cv && cv->selected()) {
 796                         sel.push_back (cv);
 797                 }
 798         }
 799
 800         return sel;
 801 }
 802
 803 ContentList
 804 Timeline::selected_content () const
 805 {
 806         ContentList sel;
 807         TimelineContentViewList views = selected_views ();
 808
 809         for (TimelineContentViewList::const_iterator i = views.begin(); i != views.end(); ++i) {
 810                 sel.push_back ((*i)->content ());
 811         }
 812
 813         return sel;
 814 }
 815
 816 void
 817 Timeline::set_selection (ContentList selection)
 818 {
 819         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 820                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 821                 if (cv) {
 822                         cv->set_selected (find (selection.begin(), selection.end(), cv->content ()) != selection.end ());
 823                 }
 824         }
 825 }
 826
 827 int
 828 Timeline::tracks_y_offset () const
 829 {
 830         return _reels_view->bbox().height + 4;
 831 }
 832
 833 int
 834 Timeline::width () const
 835 {
 836         return _main_canvas->GetVirtualSize().GetWidth();
 837 }
 838
 839 void
 840 Timeline::scrolled (wxScrollWinEvent& ev)
 841 {
 842         if (ev.GetOrientation() == wxVERTICAL) {
 843                 int x, y;
 844                 _main_canvas->GetViewStart (&x, &y);
 845                 _labels_canvas->Scroll (0, y);
 846         }
 847         ev.Skip ();
 848 }
 849
 850 void
 851 Timeline::tool_clicked (Tool t)
 852 {
 853         switch (t) {
 854         case ZOOM:
 855         case SELECT:
 856                 _tool = t;
 857                 break;
 858         case ZOOM_ALL:
 859                 zoom_all ();
 860                 break;
 861         case SNAP:
 862         case SEQUENCE:
 863                 break;
 864         }
 865 }
 866
 867 void
 868 Timeline::zoom_all ()
 869 {
 870         shared_ptr<Film> film = _film.lock ();
 871         DCPOMATIC_ASSERT (film);
 872         set_pixels_per_second ((_main_canvas->GetSize().GetWidth() - 32) / film->length().seconds());
 873         set_pixels_per_track ((_main_canvas->GetSize().GetHeight() - tracks_y_offset() - _time_axis_view->bbox().height - 32) / _tracks);
 874         setup_scrollbars ();
 875         _main_canvas->Scroll (0, 0);
 876         _labels_canvas->Scroll (0, 0);
 877         Refresh ();
 878 }