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_text_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/text_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 <iterator>
  45 #include <iostream>
  46
  47 using std::list;
  48 using std::cout;
  49 using std::min;
  50 using std::max;
  51 using boost::shared_ptr;
  52 using boost::weak_ptr;
  53 using boost::dynamic_pointer_cast;
  54 using boost::bind;
  55 using boost::optional;
  56
  57 /* 3 hours in 640 pixels */
  58 double const Timeline::_minimum_pixels_per_second = 640.0 / (60 * 60 * 3);
  59 int const Timeline::_minimum_pixels_per_track = 16;
  60
  61 Timeline::Timeline (wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film)
  62         : wxPanel (parent, wxID_ANY)
  63         , _labels_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  64         , _main_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  65         , _content_panel (cp)
  66         , _film (film)
  67         , _time_axis_view (new TimelineTimeAxisView (*this, 64))
  68         , _reels_view (new TimelineReelsView (*this, 32))
  69         , _labels_view (new TimelineLabelsView (*this))
  70         , _tracks (0)
  71         , _left_down (false)
  72         , _down_view_position (0)
  73         , _first_move (false)
  74         , _menu (this)
  75         , _snap (true)
  76         , _tool (SELECT)
  77         , _x_scroll_rate (16)
  78         , _y_scroll_rate (16)
  79         , _pixels_per_track (48)
  80         , _first_resize (true)
  81 {
  82 #ifndef __WXOSX__
  83         _labels_canvas->SetDoubleBuffered (true);
  84         _main_canvas->SetDoubleBuffered (true);
  85 #endif
  86
  87         wxSizer* sizer = new wxBoxSizer (wxHORIZONTAL);
  88         sizer->Add (_labels_canvas, 0, wxEXPAND);
  89         _labels_canvas->SetMinSize (wxSize (_labels_view->bbox().width, -1));
  90         sizer->Add (_main_canvas, 1, wxEXPAND);
  91         SetSizer (sizer);
  92
  93         _labels_canvas->Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint_labels, this));
  94         _main_canvas->Bind   (wxEVT_PAINT,      boost::bind (&Timeline::paint_main,   this));
  95         _main_canvas->Bind   (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,    this, _1));
  96         _main_canvas->Bind   (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,      this, _1));
  97         _main_canvas->Bind   (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,   this, _1));
  98         _main_canvas->Bind   (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved,  this, _1));
  99         _main_canvas->Bind   (wxEVT_SIZE,       boost::bind (&Timeline::resized,      this));
 100         _main_canvas->Bind   (wxEVT_SCROLLWIN_TOP,        boost::bind (&Timeline::scrolled,     this, _1));
 101         _main_canvas->Bind   (wxEVT_SCROLLWIN_BOTTOM,     boost::bind (&Timeline::scrolled,     this, _1));
 102         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 103         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 104         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 105         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 106         _main_canvas->Bind   (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&Timeline::scrolled,     this, _1));
 107
 108         film_changed (Film::CONTENT);
 109
 110         SetMinSize (wxSize (640, 4 * pixels_per_track() + 96));
 111
 112         _film_changed_connection = film->Changed.connect (bind (&Timeline::film_changed, this, _1));
 113         _film_content_change_connection = film->ContentChange.connect (bind (&Timeline::film_content_change, this, _1, _3, _4));
 114
 115         setup_scrollbars ();
 116         _labels_canvas->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
 117 }
 118
 119 void
 120 Timeline::set_pixels_per_second (double pps)
 121 {
 122         _pixels_per_second = max (_minimum_pixels_per_second, pps);
 123 }
 124
 125 void
 126 Timeline::paint_labels ()
 127 {
 128         wxPaintDC dc (_labels_canvas);
 129
 130         wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
 131         if (!gc) {
 132                 return;
 133         }
 134
 135         int vsx, vsy;
 136         _labels_canvas->GetViewStart (&vsx, &vsy);
 137         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate + tracks_y_offset());
 138
 139         _labels_view->paint (gc, list<dcpomatic::Rect<int> >());
 140
 141         delete gc;
 142 }
 143
 144 void
 145 Timeline::paint_main ()
 146 {
 147         wxPaintDC dc (_main_canvas);
 148         _main_canvas->DoPrepareDC (dc);
 149
 150         wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
 151         if (!gc) {
 152                 return;
 153         }
 154
 155         int vsx, vsy;
 156         _main_canvas->GetViewStart (&vsx, &vsy);
 157         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate);
 158
 159         gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
 160
 161         BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 162
 163                 shared_ptr<TimelineContentView> ic = dynamic_pointer_cast<TimelineContentView> (i);
 164
 165                 /* Find areas of overlap with other content views, so that we can plot them */
 166                 list<dcpomatic::Rect<int> > overlaps;
 167                 BOOST_FOREACH (shared_ptr<TimelineView> j, _views) {
 168                         shared_ptr<TimelineContentView> jc = dynamic_pointer_cast<TimelineContentView> (j);
 169                         /* No overlap with non-content views, views no different tracks, audio views or non-active views */
 170                         if (!ic || !jc || i == j || ic->track() != jc->track() || ic->track().get_value_or(2) >= 2 || !ic->active() || !jc->active()) {
 171                                 continue;
 172                         }
 173
 174                         optional<dcpomatic::Rect<int> > r = j->bbox().intersection (i->bbox());
 175                         if (r) {
 176                                 overlaps.push_back (r.get ());
 177                         }
 178                 }
 179
 180                 i->paint (gc, overlaps);
 181         }
 182
 183         if (_zoom_point) {
 184                 /* Translate back as _down_point and _zoom_point do not take scroll into account */
 185                 gc->Translate (vsx * _x_scroll_rate, vsy * _y_scroll_rate);
 186                 gc->SetPen (*wxBLACK_PEN);
 187                 gc->SetBrush (*wxTRANSPARENT_BRUSH);
 188                 gc->DrawRectangle (
 189                         min (_down_point.x, _zoom_point->x),
 190                         min (_down_point.y, _zoom_point->y),
 191                         fabs (_down_point.x - _zoom_point->x),
 192                         fabs (_down_point.y - _zoom_point->y)
 193                         );
 194         }
 195
 196         delete gc;
 197 }
 198
 199 void
 200 Timeline::film_changed (Film::Property p)
 201 {
 202         if (p == Film::CONTENT || p == Film::REEL_TYPE || p == Film::REEL_LENGTH) {
 203                 ensure_ui_thread ();
 204                 recreate_views ();
 205         } else if (p == Film::CONTENT_ORDER) {
 206                 Refresh ();
 207         }
 208 }
 209
 210 void
 211 Timeline::recreate_views ()
 212 {
 213         shared_ptr<const Film> film = _film.lock ();
 214         if (!film) {
 215                 return;
 216         }
 217
 218         _views.clear ();
 219         _views.push_back (_time_axis_view);
 220         _views.push_back (_reels_view);
 221
 222         BOOST_FOREACH (shared_ptr<Content> i, film->content ()) {
 223                 if (i->video) {
 224                         _views.push_back (shared_ptr<TimelineView> (new TimelineVideoContentView (*this, i)));
 225                 }
 226
 227                 if (i->audio && !i->audio->mapping().mapped_output_channels().empty ()) {
 228                         _views.push_back (shared_ptr<TimelineView> (new TimelineAudioContentView (*this, i)));
 229                 }
 230
 231                 BOOST_FOREACH (shared_ptr<TextContent> j, i->text) {
 232                         _views.push_back (shared_ptr<TimelineView> (new TimelineTextContentView (*this, i, j)));
 233                 }
 234
 235                 if (dynamic_pointer_cast<AtmosMXFContent> (i)) {
 236                         _views.push_back (shared_ptr<TimelineView> (new TimelineAtmosContentView (*this, i)));
 237                 }
 238         }
 239
 240         assign_tracks ();
 241         setup_scrollbars ();
 242         Refresh ();
 243 }
 244
 245 void
 246 Timeline::film_content_change (ChangeType type, int property, bool frequent)
 247 {
 248         if (type != CHANGE_TYPE_DONE) {
 249                 return;
 250         }
 251
 252         ensure_ui_thread ();
 253
 254         if (property == AudioContentProperty::STREAMS) {
 255                 recreate_views ();
 256         } else if (property == ContentProperty::POSITION || property == ContentProperty::LENGTH) {
 257                 _reels_view->force_redraw ();
 258         } else if (!frequent) {
 259                 setup_scrollbars ();
 260                 Refresh ();
 261         }
 262 }
 263
 264 template <class T>
 265 int
 266 place (TimelineViewList& views, int& tracks)
 267 {
 268         int const base = tracks;
 269
 270         BOOST_FOREACH (shared_ptr<TimelineView> i, views) {
 271                 if (!dynamic_pointer_cast<T>(i)) {
 272                         continue;
 273                 }
 274
 275                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (i);
 276
 277                 int t = base;
 278
 279                 shared_ptr<Content> content = cv->content();
 280                 DCPTimePeriod const content_period (content->position(), content->end());
 281
 282                 while (true) {
 283                         TimelineViewList::iterator j = views.begin();
 284                         while (j != views.end()) {
 285                                 shared_ptr<T> test = dynamic_pointer_cast<T> (*j);
 286                                 if (!test) {
 287                                         ++j;
 288                                         continue;
 289                                 }
 290
 291                                 shared_ptr<Content> test_content = test->content();
 292                                 if (
 293                                         test->track() && test->track().get() == t &&
 294                                         content_period.overlap(DCPTimePeriod(test_content->position(), test_content->end()))) {
 295                                         /* we have an overlap on track `t' */
 296                                         ++t;
 297                                         break;
 298                                 }
 299
 300                                 ++j;
 301                         }
 302
 303                         if (j == views.end ()) {
 304                                 /* no overlap on `t' */
 305                                 break;
 306                         }
 307                 }
 308
 309                 cv->set_track (t);
 310                 tracks = max (tracks, t + 1);
 311         }
 312
 313         return tracks - base;
 314 }
 315
 316 /** Compare the mapped output channels of two TimelineViews, so we can into
 317  *  order of first mapped DCP channel.
 318  */
 319 struct AudioMappingComparator {
 320         bool operator()(shared_ptr<TimelineView> a, shared_ptr<TimelineView> b) {
 321                 int la = -1;
 322                 shared_ptr<TimelineAudioContentView> cva = dynamic_pointer_cast<TimelineAudioContentView>(a);
 323                 if (cva) {
 324                         list<int> oc = cva->content()->audio->mapping().mapped_output_channels();
 325                         la = *min_element(boost::begin(oc), boost::end(oc));
 326                 }
 327                 int lb = -1;
 328                 shared_ptr<TimelineAudioContentView> cvb = dynamic_pointer_cast<TimelineAudioContentView>(b);
 329                 if (cvb) {
 330                         list<int> oc = cvb->content()->audio->mapping().mapped_output_channels();
 331                         lb = *min_element(boost::begin(oc), boost::end(oc));
 332                 }
 333                 return la < lb;
 334         }
 335 };
 336
 337 void
 338 Timeline::assign_tracks ()
 339 {
 340         /* Tracks are:
 341            Video (mono or left-eye)
 342            Video (right-eye)
 343            Text 1
 344            Text 2
 345            Text N
 346            Atmos
 347            Audio 1
 348            Audio 2
 349            Audio N
 350         */
 351
 352         _tracks = 0;
 353
 354         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 355                 shared_ptr<TimelineContentView> c = dynamic_pointer_cast<TimelineContentView> (*i);
 356                 if (c) {
 357                         c->unset_track ();
 358                 }
 359         }
 360
 361         /* Video */
 362
 363         bool have_3d = false;
 364         BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 365                 shared_ptr<TimelineVideoContentView> cv = dynamic_pointer_cast<TimelineVideoContentView> (i);
 366                 if (!cv) {
 367                         continue;
 368                 }
 369
 370                 /* Video on tracks 0 and maybe 1 (left and right eye) */
 371                 if (cv->content()->video->frame_type() == VIDEO_FRAME_TYPE_3D_RIGHT) {
 372                         cv->set_track (1);
 373                         _tracks = max (_tracks, 2);
 374                         have_3d = true;
 375                 } else {
 376                         cv->set_track (0);
 377                 }
 378         }
 379
 380         _tracks = max (_tracks, 1);
 381
 382         /* Texts */
 383
 384         int const text_tracks = place<TimelineTextContentView> (_views, _tracks);
 385
 386         /* Atmos */
 387
 388         bool have_atmos = false;
 389         BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 390                 shared_ptr<TimelineVideoContentView> cv = dynamic_pointer_cast<TimelineVideoContentView> (i);
 391                 if (!cv) {
 392                         continue;
 393                 }
 394                 if (dynamic_pointer_cast<TimelineAtmosContentView> (i)) {
 395                         cv->set_track (_tracks - 1);
 396                         have_atmos = true;
 397                 }
 398         }
 399
 400         if (have_atmos) {
 401                 ++_tracks;
 402         }
 403
 404         /* Audio.  We're sorting the views so that we get the audio views in order of increasing
 405            DCP channel index.
 406         */
 407
 408         TimelineViewList views = _views;
 409         sort(views.begin(), views.end(), AudioMappingComparator());
 410         int const audio_tracks = place<TimelineAudioContentView> (views, _tracks);
 411
 412         _labels_view->set_3d (have_3d);
 413         _labels_view->set_audio_tracks (audio_tracks);
 414         _labels_view->set_text_tracks (text_tracks);
 415         _labels_view->set_atmos (have_atmos);
 416
 417         _time_axis_view->set_y (tracks());
 418         _reels_view->set_y (8);
 419 }
 420
 421 int
 422 Timeline::tracks () const
 423 {
 424         return _tracks;
 425 }
 426
 427 void
 428 Timeline::setup_scrollbars ()
 429 {
 430         shared_ptr<const Film> film = _film.lock ();
 431         if (!film || !_pixels_per_second) {
 432                 return;
 433         }
 434
 435         int const h = tracks() * pixels_per_track() + tracks_y_offset() + _time_axis_view->bbox().height;
 436
 437         _labels_canvas->SetVirtualSize (_labels_view->bbox().width, h);
 438         _labels_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 439         _main_canvas->SetVirtualSize (*_pixels_per_second * film->length().seconds(), h);
 440         _main_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 441 }
 442
 443 shared_ptr<TimelineView>
 444 Timeline::event_to_view (wxMouseEvent& ev)
 445 {
 446         /* Search backwards through views so that we find the uppermost one first */
 447         TimelineViewList::reverse_iterator i = _views.rbegin();
 448         Position<int> const p (ev.GetX(), ev.GetY());
 449         while (i != _views.rend() && !(*i)->bbox().contains (p)) {
 450                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 451                 ++i;
 452         }
 453
 454         if (i == _views.rend ()) {
 455                 return shared_ptr<TimelineView> ();
 456         }
 457
 458         return *i;
 459 }
 460
 461 void
 462 Timeline::left_down (wxMouseEvent& ev)
 463 {
 464         _left_down = true;
 465         _down_point = ev.GetPosition ();
 466
 467         switch (_tool) {
 468         case SELECT:
 469                 left_down_select (ev);
 470                 break;
 471         case ZOOM:
 472         case ZOOM_ALL:
 473         case SNAP:
 474         case SEQUENCE:
 475                 /* Nothing to do */
 476                 break;
 477         }
 478 }
 479
 480 void
 481 Timeline::left_down_select (wxMouseEvent& ev)
 482 {
 483         shared_ptr<TimelineView> view = event_to_view (ev);
 484         shared_ptr<TimelineContentView> content_view = dynamic_pointer_cast<TimelineContentView> (view);
 485
 486         _down_view.reset ();
 487
 488         if (content_view) {
 489                 _down_view = content_view;
 490                 _down_view_position = content_view->content()->position ();
 491         }
 492
 493         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 494                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 495                 if (!cv) {
 496                         continue;
 497                 }
 498
 499                 if (!ev.ShiftDown ()) {
 500                         cv->set_selected (view == *i);
 501                 }
 502         }
 503
 504         if (content_view && ev.ShiftDown ()) {
 505                 content_view->set_selected (!content_view->selected ());
 506         }
 507
 508         _first_move = false;
 509
 510         if (_down_view) {
 511                 /* Pre-compute the points that we might snap to */
 512                 for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 513                         shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 514                         if (!cv || cv == _down_view || cv->content() == _down_view->content()) {
 515                                 continue;
 516                         }
 517
 518                         _start_snaps.push_back (cv->content()->position());
 519                         _end_snaps.push_back (cv->content()->position());
 520                         _start_snaps.push_back (cv->content()->end());
 521                         _end_snaps.push_back (cv->content()->end());
 522
 523                         BOOST_FOREACH (DCPTime i, cv->content()->reel_split_points()) {
 524                                 _start_snaps.push_back (i);
 525                         }
 526                 }
 527
 528                 /* Tell everyone that things might change frequently during the drag */
 529                 _down_view->content()->set_change_signals_frequent (true);
 530         }
 531 }
 532
 533 void
 534 Timeline::left_up (wxMouseEvent& ev)
 535 {
 536         _left_down = false;
 537
 538         switch (_tool) {
 539         case SELECT:
 540                 left_up_select (ev);
 541                 break;
 542         case ZOOM:
 543                 left_up_zoom (ev);
 544                 break;
 545         case ZOOM_ALL:
 546         case SNAP:
 547         case SEQUENCE:
 548                 break;
 549         }
 550 }
 551
 552 void
 553 Timeline::left_up_select (wxMouseEvent& ev)
 554 {
 555         if (_down_view) {
 556                 _down_view->content()->set_change_signals_frequent (false);
 557         }
 558
 559         _content_panel->set_selection (selected_content ());
 560         set_position_from_event (ev);
 561
 562         /* Clear up up the stuff we don't do during drag */
 563         assign_tracks ();
 564         setup_scrollbars ();
 565         Refresh ();
 566
 567         _start_snaps.clear ();
 568         _end_snaps.clear ();
 569 }
 570
 571 void
 572 Timeline::left_up_zoom (wxMouseEvent& ev)
 573 {
 574         _zoom_point = ev.GetPosition ();
 575
 576         int vsx, vsy;
 577         _main_canvas->GetViewStart (&vsx, &vsy);
 578
 579         wxPoint top_left(min(_down_point.x, _zoom_point->x), min(_down_point.y, _zoom_point->y));
 580         wxPoint bottom_right(max(_down_point.x, _zoom_point->x), max(_down_point.y, _zoom_point->y));
 581
 582         if ((bottom_right.x - top_left.x) < 8 || (bottom_right.y - top_left.y) < 8) {
 583                 /* Very small zoom rectangle: we assume it wasn't intentional */
 584                 return;
 585         }
 586
 587         DCPTime const time_left = DCPTime::from_seconds((top_left.x + vsx) / *_pixels_per_second);
 588         DCPTime const time_right = DCPTime::from_seconds((bottom_right.x + vsx) / *_pixels_per_second);
 589         set_pixels_per_second (double(GetSize().GetWidth()) / (time_right.seconds() - time_left.seconds()));
 590
 591         double const tracks_top = double(top_left.y - tracks_y_offset()) / _pixels_per_track;
 592         double const tracks_bottom = double(bottom_right.y - tracks_y_offset()) / _pixels_per_track;
 593         set_pixels_per_track (lrint(GetSize().GetHeight() / (tracks_bottom - tracks_top)));
 594
 595         setup_scrollbars ();
 596         int const y = (tracks_top * _pixels_per_track + tracks_y_offset()) / _y_scroll_rate;
 597         _main_canvas->Scroll (time_left.seconds() * *_pixels_per_second / _x_scroll_rate, y);
 598         _labels_canvas->Scroll (0, y);
 599
 600         _zoom_point = optional<wxPoint> ();
 601         Refresh ();
 602 }
 603
 604 void
 605 Timeline::set_pixels_per_track (int h)
 606 {
 607         _pixels_per_track = max(_minimum_pixels_per_track, h);
 608 }
 609
 610 void
 611 Timeline::mouse_moved (wxMouseEvent& ev)
 612 {
 613         switch (_tool) {
 614         case SELECT:
 615                 mouse_moved_select (ev);
 616                 break;
 617         case ZOOM:
 618                 mouse_moved_zoom (ev);
 619                 break;
 620         case ZOOM_ALL:
 621         case SNAP:
 622         case SEQUENCE:
 623                 break;
 624         }
 625 }
 626
 627 void
 628 Timeline::mouse_moved_select (wxMouseEvent& ev)
 629 {
 630         if (!_left_down) {
 631                 return;
 632         }
 633
 634         set_position_from_event (ev);
 635 }
 636
 637 void
 638 Timeline::mouse_moved_zoom (wxMouseEvent& ev)
 639 {
 640         if (!_left_down) {
 641                 return;
 642         }
 643
 644         _zoom_point = ev.GetPosition ();
 645         Refresh ();
 646 }
 647
 648 void
 649 Timeline::right_down (wxMouseEvent& ev)
 650 {
 651         switch (_tool) {
 652         case SELECT:
 653                 right_down_select (ev);
 654                 break;
 655         case ZOOM:
 656                 /* Zoom out */
 657                 set_pixels_per_second (*_pixels_per_second / 2);
 658                 set_pixels_per_track (_pixels_per_track / 2);
 659                 setup_scrollbars ();
 660                 Refresh ();
 661                 break;
 662         case ZOOM_ALL:
 663         case SNAP:
 664         case SEQUENCE:
 665                 break;
 666         }
 667 }
 668
 669 void
 670 Timeline::right_down_select (wxMouseEvent& ev)
 671 {
 672         shared_ptr<TimelineView> view = event_to_view (ev);
 673         shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (view);
 674         if (!cv) {
 675                 return;
 676         }
 677
 678         if (!cv->selected ()) {
 679                 clear_selection ();
 680                 cv->set_selected (true);
 681         }
 682
 683         _menu.popup (_film, selected_content (), selected_views (), ev.GetPosition ());
 684 }
 685
 686 void
 687 Timeline::maybe_snap (DCPTime a, DCPTime b, optional<DCPTime>& nearest_distance) const
 688 {
 689         DCPTime const d = a - b;
 690         if (!nearest_distance || d.abs() < nearest_distance.get().abs()) {
 691                 nearest_distance = d;
 692         }
 693 }
 694
 695 void
 696 Timeline::set_position_from_event (wxMouseEvent& ev)
 697 {
 698         if (!_pixels_per_second) {
 699                 return;
 700         }
 701
 702         double const pps = _pixels_per_second.get ();
 703
 704         wxPoint const p = ev.GetPosition();
 705
 706         if (!_first_move) {
 707                 /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
 708                    before the drag is considered to have started.
 709                 */
 710                 int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
 711                 if (dist < 8) {
 712                         return;
 713                 }
 714                 _first_move = true;
 715         }
 716
 717         if (!_down_view) {
 718                 return;
 719         }
 720
 721         DCPTime new_position = _down_view_position + DCPTime::from_seconds ((p.x - _down_point.x) / pps);
 722
 723         if (_snap) {
 724
 725                 DCPTime const new_end = new_position + _down_view->content()->length_after_trim();
 726                 /* Signed `distance' to nearest thing (i.e. negative is left on the timeline,
 727                    positive is right).
 728                 */
 729                 optional<DCPTime> nearest_distance;
 730
 731                 /* Find the nearest snap point */
 732
 733                 BOOST_FOREACH (DCPTime i, _start_snaps) {
 734                         maybe_snap (i, new_position, nearest_distance);
 735                 }
 736
 737                 BOOST_FOREACH (DCPTime i, _end_snaps) {
 738                         maybe_snap (i, new_end, nearest_distance);
 739                 }
 740
 741                 if (nearest_distance) {
 742                         /* Snap if it's close; `close' means within a proportion of the time on the timeline */
 743                         if (nearest_distance.get().abs() < DCPTime::from_seconds ((width() / pps) / 64)) {
 744                                 new_position += nearest_distance.get ();
 745                         }
 746                 }
 747         }
 748
 749         if (new_position < DCPTime ()) {
 750                 new_position = DCPTime ();
 751         }
 752
 753         _down_view->content()->set_position (new_position);
 754
 755         shared_ptr<Film> film = _film.lock ();
 756         DCPOMATIC_ASSERT (film);
 757         film->set_sequence (false);
 758 }
 759
 760 void
 761 Timeline::force_redraw (dcpomatic::Rect<int> const & r)
 762 {
 763         _main_canvas->RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 764 }
 765
 766 shared_ptr<const Film>
 767 Timeline::film () const
 768 {
 769         return _film.lock ();
 770 }
 771
 772 void
 773 Timeline::resized ()
 774 {
 775         if (_main_canvas->GetSize().GetWidth() > 0 && _first_resize) {
 776                 zoom_all ();
 777                 _first_resize = false;
 778         }
 779         setup_scrollbars ();
 780 }
 781
 782 void
 783 Timeline::clear_selection ()
 784 {
 785         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 786                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 787                 if (cv) {
 788                         cv->set_selected (false);
 789                 }
 790         }
 791 }
 792
 793 TimelineContentViewList
 794 Timeline::selected_views () const
 795 {
 796         TimelineContentViewList sel;
 797
 798         for (TimelineViewList::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 799                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 800                 if (cv && cv->selected()) {
 801                         sel.push_back (cv);
 802                 }
 803         }
 804
 805         return sel;
 806 }
 807
 808 ContentList
 809 Timeline::selected_content () const
 810 {
 811         ContentList sel;
 812         TimelineContentViewList views = selected_views ();
 813
 814         for (TimelineContentViewList::const_iterator i = views.begin(); i != views.end(); ++i) {
 815                 sel.push_back ((*i)->content ());
 816         }
 817
 818         return sel;
 819 }
 820
 821 void
 822 Timeline::set_selection (ContentList selection)
 823 {
 824         for (TimelineViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 825                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (*i);
 826                 if (cv) {
 827                         cv->set_selected (find (selection.begin(), selection.end(), cv->content ()) != selection.end ());
 828                 }
 829         }
 830 }
 831
 832 int
 833 Timeline::tracks_y_offset () const
 834 {
 835         return _reels_view->bbox().height + 4;
 836 }
 837
 838 int
 839 Timeline::width () const
 840 {
 841         return _main_canvas->GetVirtualSize().GetWidth();
 842 }
 843
 844 void
 845 Timeline::scrolled (wxScrollWinEvent& ev)
 846 {
 847         if (ev.GetOrientation() == wxVERTICAL) {
 848                 int x, y;
 849                 _main_canvas->GetViewStart (&x, &y);
 850                 _labels_canvas->Scroll (0, y);
 851         }
 852         ev.Skip ();
 853 }
 854
 855 void
 856 Timeline::tool_clicked (Tool t)
 857 {
 858         switch (t) {
 859         case ZOOM:
 860         case SELECT:
 861                 _tool = t;
 862                 break;
 863         case ZOOM_ALL:
 864                 zoom_all ();
 865                 break;
 866         case SNAP:
 867         case SEQUENCE:
 868                 break;
 869         }
 870 }
 871
 872 void
 873 Timeline::zoom_all ()
 874 {
 875         shared_ptr<Film> film = _film.lock ();
 876         DCPOMATIC_ASSERT (film);
 877         set_pixels_per_second ((_main_canvas->GetSize().GetWidth() - 32) / film->length().seconds());
 878         set_pixels_per_track ((_main_canvas->GetSize().GetHeight() - tracks_y_offset() - _time_axis_view->bbox().height - 32) / _tracks);
 879         setup_scrollbars ();
 880         _main_canvas->Scroll (0, 0);
 881         _labels_canvas->Scroll (0, 0);
 882         Refresh ();
 883 }