Try again to fix OS X build.
[dcpomatic.git] / src / wx / timeline.cc
index 04db5c628d4e6f148dbb6ab706ed21b857d35400..0ddd78ae006099cb2d4d8504121b32387e4cda00 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
 #include <boost/weak_ptr.hpp>
 #include <boost/foreach.hpp>
 #include <list>
+#include <iterator>
 #include <iostream>
 
 using std::list;
 using std::cout;
+using std::min;
 using std::max;
+using std::begin;
+using std::end;
 using boost::shared_ptr;
 using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
 using boost::bind;
 using boost::optional;
 
+/* 3 hours in 640 pixels */
+double const Timeline::_minimum_pixels_per_second = 640.0 / (60 * 60 * 3);
+int const Timeline::_minimum_pixels_per_track = 16;
+
 Timeline::Timeline (wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film)
-       : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
+       : wxPanel (parent, wxID_ANY)
+       , _labels_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
+       , _main_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
        , _content_panel (cp)
        , _film (film)
        , _time_axis_view (new TimelineTimeAxisView (*this, 64))
@@ -65,45 +75,96 @@ Timeline::Timeline (wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film)
        , _first_move (false)
        , _menu (this)
        , _snap (true)
+       , _tool (SELECT)
+       , _x_scroll_rate (16)
+       , _y_scroll_rate (16)
+       , _pixels_per_track (48)
+       , _first_resize (true)
 {
 #ifndef __WXOSX__
-       SetDoubleBuffered (true);
+       _labels_canvas->SetDoubleBuffered (true);
+       _main_canvas->SetDoubleBuffered (true);
 #endif
 
-       Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint,       this));
-       Bind (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,   this, _1));
-       Bind (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,     this, _1));
-       Bind (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,  this, _1));
-       Bind (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved, this, _1));
-       Bind (wxEVT_SIZE,       boost::bind (&Timeline::resized,     this));
+       wxSizer* sizer = new wxBoxSizer (wxHORIZONTAL);
+       sizer->Add (_labels_canvas, 0, wxEXPAND);
+       _labels_canvas->SetMinSize (wxSize (_labels_view->bbox().width, -1));
+       sizer->Add (_main_canvas, 1, wxEXPAND);
+       SetSizer (sizer);
+
+       _labels_canvas->Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint_labels, this));
+       _main_canvas->Bind   (wxEVT_PAINT,      boost::bind (&Timeline::paint_main,   this));
+       _main_canvas->Bind   (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,    this, _1));
+       _main_canvas->Bind   (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,      this, _1));
+       _main_canvas->Bind   (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,   this, _1));
+       _main_canvas->Bind   (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved,  this, _1));
+       _main_canvas->Bind   (wxEVT_SIZE,       boost::bind (&Timeline::resized,      this));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_TOP,        boost::bind (&Timeline::scrolled,     this, _1));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_BOTTOM,     boost::bind (&Timeline::scrolled,     this, _1));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEUP,     boost::bind (&Timeline::scrolled,     this, _1));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEUP,     boost::bind (&Timeline::scrolled,     this, _1));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
+       _main_canvas->Bind   (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&Timeline::scrolled,     this, _1));
 
        film_changed (Film::CONTENT);
 
-       SetMinSize (wxSize (640, tracks() * track_height() + 96));
-
-       _tracks_position = Position<int> (_labels_view->bbox().width, 32);
+       SetMinSize (wxSize (640, 4 * pixels_per_track() + 96));
 
        _film_changed_connection = film->Changed.connect (bind (&Timeline::film_changed, this, _1));
        _film_content_changed_connection = film->ContentChanged.connect (bind (&Timeline::film_content_changed, this, _2, _3));
+
+       setup_scrollbars ();
+       _labels_canvas->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
+}
+
+void
+Timeline::set_pixels_per_second (double pps)
+{
+       _pixels_per_second = max (_minimum_pixels_per_second, pps);
 }
 
 void
-Timeline::paint ()
+Timeline::paint_labels ()
 {
-       wxPaintDC dc (this);
+       wxPaintDC dc (_labels_canvas);
 
        wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
        if (!gc) {
                return;
        }
 
+       int vsx, vsy;
+       _labels_canvas->GetViewStart (&vsx, &vsy);
+       gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate + tracks_y_offset());
+
+       _labels_view->paint (gc, list<dcpomatic::Rect<int> >());
+
+       delete gc;
+}
+
+void
+Timeline::paint_main ()
+{
+       wxPaintDC dc (_main_canvas);
+       _main_canvas->DoPrepareDC (dc);
+
+       wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
+       if (!gc) {
+               return;
+       }
+
+       int vsx, vsy;
+       _main_canvas->GetViewStart (&vsx, &vsy);
+       gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate);
+
        gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
 
        BOOST_FOREACH (shared_ptr<TimelineView> i, _views) {
 
                shared_ptr<TimelineContentView> ic = dynamic_pointer_cast<TimelineContentView> (i);
 
-               /* Find areas of overlap */
+               /* Find areas of overlap with other content views, so that we can plot them */
                list<dcpomatic::Rect<int> > overlaps;
                BOOST_FOREACH (shared_ptr<TimelineView> j, _views) {
                        shared_ptr<TimelineContentView> jc = dynamic_pointer_cast<TimelineContentView> (j);
@@ -121,6 +182,19 @@ Timeline::paint ()
                i->paint (gc, overlaps);
        }
 
+       if (_zoom_point) {
+               /* Translate back as _down_point and _zoom_point do not take scroll into account */
+               gc->Translate (vsx * _x_scroll_rate, vsy * _y_scroll_rate);
+               gc->SetPen (*wxBLACK_PEN);
+               gc->SetBrush (*wxTRANSPARENT_BRUSH);
+               gc->DrawRectangle (
+                       min (_down_point.x, _zoom_point->x),
+                       min (_down_point.y, _zoom_point->y),
+                       fabs (_down_point.x - _zoom_point->x),
+                       fabs (_down_point.y - _zoom_point->y)
+                       );
+       }
+
        delete gc;
 }
 
@@ -146,7 +220,6 @@ Timeline::recreate_views ()
        _views.clear ();
        _views.push_back (_time_axis_view);
        _views.push_back (_reels_view);
-       _views.push_back (_labels_view);
 
        BOOST_FOREACH (shared_ptr<Content> i, film->content ()) {
                if (i->video) {
@@ -167,7 +240,7 @@ Timeline::recreate_views ()
        }
 
        assign_tracks ();
-       setup_pixels_per_second ();
+       setup_scrollbars ();
        Refresh ();
 }
 
@@ -179,7 +252,7 @@ Timeline::film_content_changed (int property, bool frequent)
        if (property == AudioContentProperty::STREAMS) {
                recreate_views ();
        } else if (!frequent) {
-               setup_pixels_per_second ();
+               setup_scrollbars ();
                Refresh ();
        }
 }
@@ -236,6 +309,27 @@ place (TimelineViewList& views, int& tracks)
        return tracks - base;
 }
 
+/** Compare the mapped output channels of two TimelineViews, so we can into
+ *  order of first mapped DCP channel.
+ */
+struct AudioMappingComparator {
+       bool operator()(shared_ptr<TimelineView> a, shared_ptr<TimelineView> b) {
+               int la = -1;
+               shared_ptr<TimelineAudioContentView> cva = dynamic_pointer_cast<TimelineAudioContentView>(a);
+               if (cva) {
+                       list<int> oc = cva->content()->audio->mapping().mapped_output_channels();
+                       la = *min_element(begin(oc), end(oc));
+               }
+               int lb = -1;
+               shared_ptr<TimelineAudioContentView> cvb = dynamic_pointer_cast<TimelineAudioContentView>(b);
+               if (cvb) {
+                       list<int> oc = cvb->content()->audio->mapping().mapped_output_channels();
+                       lb = *min_element(begin(oc), end(oc));
+               }
+               return la < lb;
+       }
+};
+
 void
 Timeline::assign_tracks ()
 {
@@ -303,15 +397,20 @@ Timeline::assign_tracks ()
                ++_tracks;
        }
 
-       /* Audio */
+       /* Audio.  We're sorting the views so that we get the audio views in order of increasing
+          DCP channel index.
+       */
 
-       place<TimelineAudioContentView> (_views, _tracks);
+       TimelineViewList views = _views;
+       sort(views.begin(), views.end(), AudioMappingComparator());
+       int const audio_tracks = place<TimelineAudioContentView> (views, _tracks);
 
        _labels_view->set_3d (have_3d);
+       _labels_view->set_audio_tracks (audio_tracks);
        _labels_view->set_subtitle_tracks (subtitle_tracks);
        _labels_view->set_atmos (have_atmos);
 
-       _time_axis_view->set_y (tracks() * track_height() + 64);
+       _time_axis_view->set_y (tracks());
        _reels_view->set_y (8);
 }
 
@@ -322,14 +421,19 @@ Timeline::tracks () const
 }
 
 void
-Timeline::setup_pixels_per_second ()
+Timeline::setup_scrollbars ()
 {
        shared_ptr<const Film> film = _film.lock ();
-       if (!film || film->length() == DCPTime ()) {
+       if (!film || !_pixels_per_second) {
                return;
        }
 
-       _pixels_per_second = static_cast<double>(width() - tracks_position().x * 2) / film->length().seconds ();
+       int const h = tracks() * pixels_per_track() + tracks_y_offset() + _time_axis_view->bbox().height;
+
+       _labels_canvas->SetVirtualSize (_labels_view->bbox().width, h);
+       _labels_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
+       _main_canvas->SetVirtualSize (*_pixels_per_second * film->length().seconds(), h);
+       _main_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 }
 
 shared_ptr<TimelineView>
@@ -352,6 +456,25 @@ Timeline::event_to_view (wxMouseEvent& ev)
 
 void
 Timeline::left_down (wxMouseEvent& ev)
+{
+       _left_down = true;
+       _down_point = ev.GetPosition ();
+
+       switch (_tool) {
+       case SELECT:
+               left_down_select (ev);
+               break;
+       case ZOOM:
+       case ZOOM_ALL:
+       case SNAP:
+       case SEQUENCE:
+               /* Nothing to do */
+               break;
+       }
+}
+
+void
+Timeline::left_down_select (wxMouseEvent& ev)
 {
        shared_ptr<TimelineView> view = event_to_view (ev);
        shared_ptr<TimelineContentView> content_view = dynamic_pointer_cast<TimelineContentView> (view);
@@ -378,8 +501,6 @@ Timeline::left_down (wxMouseEvent& ev)
                content_view->set_selected (!content_view->selected ());
        }
 
-       _left_down = true;
-       _down_point = ev.GetPosition ();
        _first_move = false;
 
        if (_down_view) {
@@ -410,6 +531,23 @@ Timeline::left_up (wxMouseEvent& ev)
 {
        _left_down = false;
 
+       switch (_tool) {
+       case SELECT:
+               left_up_select (ev);
+               break;
+       case ZOOM:
+               left_up_zoom (ev);
+               break;
+       case ZOOM_ALL:
+       case SNAP:
+       case SEQUENCE:
+               break;
+       }
+}
+
+void
+Timeline::left_up_select (wxMouseEvent& ev)
+{
        if (_down_view) {
                _down_view->content()->set_change_signals_frequent (false);
        }
@@ -419,15 +557,71 @@ Timeline::left_up (wxMouseEvent& ev)
 
        /* Clear up up the stuff we don't do during drag */
        assign_tracks ();
-       setup_pixels_per_second ();
+       setup_scrollbars ();
        Refresh ();
 
        _start_snaps.clear ();
        _end_snaps.clear ();
 }
 
+void
+Timeline::left_up_zoom (wxMouseEvent& ev)
+{
+       _zoom_point = ev.GetPosition ();
+
+       int vsx, vsy;
+       _main_canvas->GetViewStart (&vsx, &vsy);
+
+       wxPoint top_left(min(_down_point.x, _zoom_point->x), min(_down_point.y, _zoom_point->y));
+       wxPoint bottom_right(max(_down_point.x, _zoom_point->x), max(_down_point.y, _zoom_point->y));
+
+       if ((bottom_right.x - top_left.x) < 8 || (bottom_right.y - top_left.y) < 8) {
+               /* Very small zoom rectangle: we assume it wasn't intentional */
+               return;
+       }
+
+       DCPTime const time_left = DCPTime::from_seconds((top_left.x + vsx) / *_pixels_per_second);
+       DCPTime const time_right = DCPTime::from_seconds((bottom_right.x + vsx) / *_pixels_per_second);
+       set_pixels_per_second (double(GetSize().GetWidth()) / (time_right.seconds() - time_left.seconds()));
+
+       double const tracks_top = double(top_left.y - tracks_y_offset()) / _pixels_per_track;
+       double const tracks_bottom = double(bottom_right.y - tracks_y_offset()) / _pixels_per_track;
+       set_pixels_per_track (lrint(GetSize().GetHeight() / (tracks_bottom - tracks_top)));
+
+       setup_scrollbars ();
+       int const y = (tracks_top * _pixels_per_track + tracks_y_offset()) / _y_scroll_rate;
+       _main_canvas->Scroll (time_left.seconds() * *_pixels_per_second / _x_scroll_rate, y);
+       _labels_canvas->Scroll (0, y);
+
+       _zoom_point = optional<wxPoint> ();
+       Refresh ();
+}
+
+void
+Timeline::set_pixels_per_track (int h)
+{
+       _pixels_per_track = max(_minimum_pixels_per_track, h);
+}
+
 void
 Timeline::mouse_moved (wxMouseEvent& ev)
+{
+       switch (_tool) {
+       case SELECT:
+               mouse_moved_select (ev);
+               break;
+       case ZOOM:
+               mouse_moved_zoom (ev);
+               break;
+       case ZOOM_ALL:
+       case SNAP:
+       case SEQUENCE:
+               break;
+       }
+}
+
+void
+Timeline::mouse_moved_select (wxMouseEvent& ev)
 {
        if (!_left_down) {
                return;
@@ -436,8 +630,40 @@ Timeline::mouse_moved (wxMouseEvent& ev)
        set_position_from_event (ev);
 }
 
+void
+Timeline::mouse_moved_zoom (wxMouseEvent& ev)
+{
+       if (!_left_down) {
+               return;
+       }
+
+       _zoom_point = ev.GetPosition ();
+       Refresh ();
+}
+
 void
 Timeline::right_down (wxMouseEvent& ev)
+{
+       switch (_tool) {
+       case SELECT:
+               right_down_select (ev);
+               break;
+       case ZOOM:
+               /* Zoom out */
+               set_pixels_per_second (*_pixels_per_second / 2);
+               set_pixels_per_track (_pixels_per_track / 2);
+               setup_scrollbars ();
+               Refresh ();
+               break;
+       case ZOOM_ALL:
+       case SNAP:
+       case SEQUENCE:
+               break;
+       }
+}
+
+void
+Timeline::right_down_select (wxMouseEvent& ev)
 {
        shared_ptr<TimelineView> view = event_to_view (ev);
        shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView> (view);
@@ -542,7 +768,11 @@ Timeline::film () const
 void
 Timeline::resized ()
 {
-       setup_pixels_per_second ();
+       if (_main_canvas->GetSize().GetWidth() > 0 && _first_resize) {
+               zoom_all ();
+               _first_resize = false;
+       }
+       setup_scrollbars ();
 }
 
 void
@@ -594,3 +824,56 @@ Timeline::set_selection (ContentList selection)
                }
        }
 }
+
+int
+Timeline::tracks_y_offset () const
+{
+       return _reels_view->bbox().height + 4;
+}
+
+int
+Timeline::width () const
+{
+       return _main_canvas->GetVirtualSize().GetWidth();
+}
+
+void
+Timeline::scrolled (wxScrollWinEvent& ev)
+{
+       if (ev.GetOrientation() == wxVERTICAL) {
+               int x, y;
+               _main_canvas->GetViewStart (&x, &y);
+               _labels_canvas->Scroll (0, y);
+       }
+       ev.Skip ();
+}
+
+void
+Timeline::tool_clicked (Tool t)
+{
+       switch (t) {
+       case ZOOM:
+       case SELECT:
+               _tool = t;
+               break;
+       case ZOOM_ALL:
+               zoom_all ();
+               break;
+       case SNAP:
+       case SEQUENCE:
+               break;
+       }
+}
+
+void
+Timeline::zoom_all ()
+{
+       shared_ptr<Film> film = _film.lock ();
+       DCPOMATIC_ASSERT (film);
+       set_pixels_per_second ((_main_canvas->GetSize().GetWidth() - 32) / film->length().seconds());
+       set_pixels_per_track ((_main_canvas->GetSize().GetHeight() - tracks_y_offset() - _time_axis_view->bbox().height - 32) / _tracks);
+       setup_scrollbars ();
+       _main_canvas->Scroll (0, 0);
+       _labels_canvas->Scroll (0, 0);
+       Refresh ();
+}