ContentMenu was keeping its initial film and not using the current one; should fix...
[dcpomatic.git] / src / wx / timeline.cc
index 113e883fc2014b112d1bef00b0e563b186e2280e..6cc1f79d93dd23c9d0b089648f36edcf1892c893 100644 (file)
 #include <list>
 #include <wx/graphics.h>
 #include <boost/weak_ptr.hpp>
-#include "film.h"
+#include "lib/film.h"
+#include "lib/playlist.h"
 #include "film_editor.h"
 #include "timeline.h"
 #include "wx_util.h"
-#include "lib/playlist.h"
 
 using std::list;
 using std::cout;
@@ -33,15 +33,19 @@ using boost::shared_ptr;
 using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
 using boost::bind;
+using boost::optional;
 
-class View
+/** Parent class for components of the timeline (e.g. a piece of content or an axis) */
+class View : public boost::noncopyable
 {
 public:
        View (Timeline& t)
-               : _timeline (t)
+               : _timeline (t)
        {
 
        }
+
+       virtual ~View () {}
                
        void paint (wxGraphicsContext* g)
        {
@@ -55,7 +59,7 @@ public:
                _timeline.force_redraw (bbox ());
        }
 
-       virtual dcpomatic::Rect bbox () const = 0;
+       virtual dcpomatic::Rect<int> bbox () const = 0;
 
 protected:
        virtual void do_paint (wxGraphicsContext *) = 0;
@@ -68,33 +72,35 @@ protected:
        Timeline& _timeline;
 
 private:
-       dcpomatic::Rect _last_paint_bbox;
+       dcpomatic::Rect<int> _last_paint_bbox;
 };
 
+
+/** Parent class for views of pieces of content */
 class ContentView : public View
 {
 public:
-       ContentView (Timeline& tl, shared_ptr<Content> c, int t)
+       ContentView (Timeline& tl, shared_ptr<Content> c)
                : View (tl)
                , _content (c)
-               , _track (t)
+               , _track (0)
                , _selected (false)
        {
-               _content_connection = c->Changed.connect (bind (&ContentView::content_changed, this, _2));
+               _content_connection = c->Changed.connect (bind (&ContentView::content_changed, this, _2, _3));
        }
 
-       dcpomatic::Rect bbox () const
+       dcpomatic::Rect<int> bbox () const
        {
                shared_ptr<const Film> film = _timeline.film ();
                shared_ptr<const Content> content = _content.lock ();
                if (!film || !content) {
-                       return dcpomatic::Rect ();
+                       return dcpomatic::Rect<int> ();
                }
                
-               return dcpomatic::Rect (
-                       time_x (content->start ()) - 8,
+               return dcpomatic::Rect<int> (
+                       time_x (content->position ()) - 8,
                        y_pos (_track) - 8,
-                       content->length () * _timeline.pixels_per_time_unit() + 16,
+                       content->length_after_trim () * _timeline.pixels_per_time_unit() + 16,
                        _timeline.track_height() + 16
                        );
        }
@@ -108,8 +114,8 @@ public:
                return _selected;
        }
 
-       weak_ptr<Content> content () const {
-               return _content;
+       shared_ptr<Content> content () const {
+               return _content.lock ();
        }
 
        void set_track (int t) {
@@ -128,52 +134,43 @@ private:
        void do_paint (wxGraphicsContext* gc)
        {
                shared_ptr<const Film> film = _timeline.film ();
-               shared_ptr<const Content> content = _content.lock ();
-               if (!film || !content) {
+               shared_ptr<const Content> cont = content ();
+               if (!film || !cont) {
                        return;
                }
 
-               Time const start = content->start ();
-               Time const len = content->length ();
+               Time const position = cont->position ();
+               Time const len = cont->length_after_trim ();
 
                wxColour selected (colour().Red() / 2, colour().Green() / 2, colour().Blue() / 2);
 
                gc->SetPen (*wxBLACK_PEN);
                
-#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
                gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 4, wxPENSTYLE_SOLID));
                if (_selected) {
                        gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (selected, wxBRUSHSTYLE_SOLID));
                } else {
                        gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (colour(), wxBRUSHSTYLE_SOLID));
                }
-#else                  
-               gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 4, wxSOLID));
-               if (_selected) {
-                       gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (selected, wxSOLID));
-               } else {
-                       gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (colour(), wxSOLID));
-               }
-#endif
-               
+
                wxGraphicsPath path = gc->CreatePath ();
-               path.MoveToPoint    (time_x (start),       y_pos (_track) + 4);
-               path.AddLineToPoint (time_x (start + len), y_pos (_track) + 4);
-               path.AddLineToPoint (time_x (start + len), y_pos (_track + 1) - 4);
-               path.AddLineToPoint (time_x (start),       y_pos (_track + 1) - 4);
-               path.AddLineToPoint (time_x (start),       y_pos (_track) + 4);
+               path.MoveToPoint    (time_x (position),       y_pos (_track) + 4);
+               path.AddLineToPoint (time_x (position + len), y_pos (_track) + 4);
+               path.AddLineToPoint (time_x (position + len), y_pos (_track + 1) - 4);
+               path.AddLineToPoint (time_x (position),       y_pos (_track + 1) - 4);
+               path.AddLineToPoint (time_x (position),       y_pos (_track) + 4);
                gc->StrokePath (path);
                gc->FillPath (path);
 
-               wxString name = wxString::Format (wxT ("%s [%s]"), std_to_wx (content->file().filename().string()).data(), type().data());
+               wxString name = wxString::Format (wxT ("%s [%s]"), std_to_wx (cont->path_summary()).data(), type().data());
                wxDouble name_width;
                wxDouble name_height;
                wxDouble name_descent;
                wxDouble name_leading;
                gc->GetTextExtent (name, &name_width, &name_height, &name_descent, &name_leading);
                
-               gc->Clip (wxRegion (time_x (start), y_pos (_track), len * _timeline.pixels_per_time_unit(), _timeline.track_height()));
-               gc->DrawText (name, time_x (start) + 12, y_pos (_track + 1) - name_height - 4);
+               gc->Clip (wxRegion (time_x (position), y_pos (_track), len * _timeline.pixels_per_time_unit(), _timeline.track_height()));
+               gc->DrawText (name, time_x (position) + 12, y_pos (_track + 1) - name_height - 4);
                gc->ResetClip ();
        }
 
@@ -182,11 +179,18 @@ private:
                return _timeline.tracks_position().y + t * _timeline.track_height();
        }
 
-       void content_changed (int p)
+       void content_changed (int p, bool frequent)
        {
-               if (p == ContentProperty::START || p == ContentProperty::LENGTH) {
+               ensure_ui_thread ();
+               
+               if (p == ContentProperty::POSITION || p == ContentProperty::LENGTH) {
                        force_redraw ();
                }
+
+               if (!frequent) {
+                       _timeline.setup_pixels_per_time_unit ();
+                       _timeline.Refresh ();
+               }
        }
 
        boost::weak_ptr<Content> _content;
@@ -199,8 +203,8 @@ private:
 class AudioContentView : public ContentView
 {
 public:
-       AudioContentView (Timeline& tl, shared_ptr<Content> c, int t)
-               : ContentView (tl, c, t)
+       AudioContentView (Timeline& tl, shared_ptr<Content> c)
+               : ContentView (tl, c)
        {}
        
 private:
@@ -218,15 +222,19 @@ private:
 class VideoContentView : public ContentView
 {
 public:
-       VideoContentView (Timeline& tl, shared_ptr<Content> c, int t)
-               : ContentView (tl, c, t)
+       VideoContentView (Timeline& tl, shared_ptr<Content> c)
+               : ContentView (tl, c)
        {}
 
 private:       
 
        wxString type () const
        {
-               return _("video");
+               if (dynamic_pointer_cast<FFmpegContent> (content ())) {
+                       return _("video");
+               } else {
+                       return _("still");
+               }
        }
 
        wxColour colour () const
@@ -239,13 +247,13 @@ class TimeAxisView : public View
 {
 public:
        TimeAxisView (Timeline& tl, int y)
-               : View (tl)
+               : View (tl)
                , _y (y)
        {}
        
-       dcpomatic::Rect bbox () const
+       dcpomatic::Rect<int> bbox () const
        {
-               return dcpomatic::Rect (0, _y - 4, _timeline.width(), 24);
+               return dcpomatic::Rect<int> (0, _y - 4, _timeline.width(), 24);
        }
 
        void set_y (int y)
@@ -258,11 +266,7 @@ private:
 
        void do_paint (wxGraphicsContext* gc)
        {
-#if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
                gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxPENSTYLE_SOLID));
-#else              
-               gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxSOLID));
-#endif             
                
                int mark_interval = rint (128 / (TIME_HZ * _timeline.pixels_per_time_unit ()));
                if (mark_interval > 5) {
@@ -321,6 +325,7 @@ private:
        int _y;
 };
 
+
 Timeline::Timeline (wxWindow* parent, FilmEditor* ed, shared_ptr<Film> film)
        : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
        , _film_editor (ed)
@@ -329,30 +334,31 @@ Timeline::Timeline (wxWindow* parent, FilmEditor* ed, shared_ptr<Film> film)
        , _tracks (0)
        , _pixels_per_time_unit (0)
        , _left_down (false)
-       , _down_view_start (0)
+       , _down_view_position (0)
        , _first_move (false)
+       , _menu (this)
+       , _snap (true)
 {
+#ifndef __WXOSX__
        SetDoubleBuffered (true);
+#endif 
 
-       setup_pixels_per_time_unit ();
-       
-       Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (Timeline::paint), 0, this);
-       Connect (wxID_ANY, wxEVT_LEFT_DOWN, wxMouseEventHandler (Timeline::left_down), 0, this);
-       Connect (wxID_ANY, wxEVT_LEFT_UP, wxMouseEventHandler (Timeline::left_up), 0, this);
-       Connect (wxID_ANY, wxEVT_MOTION, wxMouseEventHandler (Timeline::mouse_moved), 0, this);
-       Connect (wxID_ANY, wxEVT_SIZE, wxSizeEventHandler (Timeline::resized), 0, this);
+       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));
 
        playlist_changed ();
 
        SetMinSize (wxSize (640, tracks() * track_height() + 96));
 
        _playlist_connection = film->playlist()->Changed.connect (bind (&Timeline::playlist_changed, this));
-
-       _views.push_back (_time_axis_view);
 }
 
 void
-Timeline::paint (wxPaintEvent &)
+Timeline::paint ()
 {
        wxPaintDC dc (this);
 
@@ -363,7 +369,7 @@ Timeline::paint (wxPaintEvent &)
 
        gc->SetFont (gc->CreateFont (*wxNORMAL_FONT));
 
-       for (list<shared_ptr<View> >::iterator i = _views.begin(); i != _views.end(); ++i) {
+       for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
                (*i)->paint (gc);
        }
 
@@ -373,32 +379,36 @@ Timeline::paint (wxPaintEvent &)
 void
 Timeline::playlist_changed ()
 {
+       ensure_ui_thread ();
+       
        shared_ptr<const Film> fl = _film.lock ();
        if (!fl) {
                return;
        }
 
        _views.clear ();
+       _views.push_back (_time_axis_view);
 
-       Playlist::ContentList content = fl->playlist()->content ();
+       ContentList content = fl->playlist()->content ();
 
-       for (Playlist::ContentList::iterator i = content.begin(); i != content.end(); ++i) {
+       for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
                if (dynamic_pointer_cast<VideoContent> (*i)) {
-                       _views.push_back (shared_ptr<View> (new VideoContentView (*this, *i, 0)));
+                       _views.push_back (shared_ptr<View> (new VideoContentView (*this, *i)));
                }
                if (dynamic_pointer_cast<AudioContent> (*i)) {
-                       _views.push_back (shared_ptr<View> (new AudioContentView (*this, *i, 0)));
+                       _views.push_back (shared_ptr<View> (new AudioContentView (*this, *i)));
                }
        }
 
        assign_tracks ();
+       setup_pixels_per_time_unit ();
        Refresh ();
 }
 
 void
 Timeline::assign_tracks ()
 {
-       for (list<shared_ptr<View> >::iterator i = _views.begin(); i != _views.end(); ++i) {
+       for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
                shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
                if (cv) {
                        cv->set_track (0);
@@ -406,18 +416,17 @@ Timeline::assign_tracks ()
                }
        }
 
-       for (list<shared_ptr<View> >::iterator i = _views.begin(); i != _views.end(); ++i) {
+       for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
                shared_ptr<AudioContentView> acv = dynamic_pointer_cast<AudioContentView> (*i);
                if (!acv) {
                        continue;
                }
        
-               shared_ptr<Content> acv_content = acv->content().lock ();
-               assert (acv_content);
-               
+               shared_ptr<Content> acv_content = acv->content();
+
                int t = 1;
                while (1) {
-                       list<shared_ptr<View> >::iterator j = _views.begin();
+                       ViewList::iterator j = _views.begin();
                        while (j != _views.end()) {
                                shared_ptr<AudioContentView> test = dynamic_pointer_cast<AudioContentView> (*j);
                                if (!test) {
@@ -425,12 +434,14 @@ Timeline::assign_tracks ()
                                        continue;
                                }
                                
-                               shared_ptr<Content> test_content = test->content().lock ();
-                               assert (test_content);
+                               shared_ptr<Content> test_content = test->content();
                                        
                                if (test && test->track() == t) {
-                                       if ((acv_content->start() <= test_content->start() && test_content->start() <= acv_content->end()) ||
-                                           (acv_content->start() <= test_content->end()   && test_content->end()   <= acv_content->end())) {
+                                       bool const no_overlap =
+                                               (acv_content->position() < test_content->position() && acv_content->end() < test_content->position()) ||
+                                               (acv_content->position() > test_content->end()      && acv_content->end() > test_content->end());
+                                       
+                                       if (!no_overlap) {
                                                /* we have an overlap on track `t' */
                                                ++t;
                                                break;
@@ -467,49 +478,76 @@ Timeline::setup_pixels_per_time_unit ()
                return;
        }
 
-       _pixels_per_time_unit = static_cast<double>(width() - x_offset() * 2) / film->length();
+       _pixels_per_time_unit = static_cast<double>(width() - x_offset() * 2) / film->length ();
 }
 
-void
-Timeline::left_down (wxMouseEvent& ev)
+shared_ptr<View>
+Timeline::event_to_view (wxMouseEvent& ev)
 {
-       list<shared_ptr<View> >::iterator i = _views.begin();
-       Position const p (ev.GetX(), ev.GetY());
+       ViewList::iterator i = _views.begin();
+       Position<int> const p (ev.GetX(), ev.GetY());
        while (i != _views.end() && !(*i)->bbox().contains (p)) {
                ++i;
        }
 
+       if (i == _views.end ()) {
+               return shared_ptr<View> ();
+       }
+
+       return *i;
+}
+
+void
+Timeline::left_down (wxMouseEvent& ev)
+{
+       shared_ptr<View> view = event_to_view (ev);
+       shared_ptr<ContentView> content_view = dynamic_pointer_cast<ContentView> (view);
+
        _down_view.reset ();
 
-       if (i != _views.end ()) {
+       if (content_view) {
+               _down_view = content_view;
+               _down_view_position = content_view->content()->position ();
+       }
+
+       for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
                shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
-               if (cv) {
-                       _down_view = cv;
-                       shared_ptr<Content> c = cv->content().lock();
-                       assert (c);
-                       _down_view_start = c->start ();
+               if (!cv) {
+                       continue;
+               }
+               
+               if (!ev.ShiftDown ()) {
+                       cv->set_selected (view == *i);
+               }
+               
+               if (view == *i) {
+                       _film_editor->set_selection (cv->content ());
                }
        }
 
-       for (list<shared_ptr<View> >::iterator j = _views.begin(); j != _views.end(); ++j) {
-               shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*j);
-               if (cv) {
-                       cv->set_selected (i == j);
-                       if (i == j) {
-                               _film_editor->set_selection (cv->content ());
-                       }
-               }
+       if (content_view && ev.ShiftDown ()) {
+               content_view->set_selected (!content_view->selected ());
        }
 
        _left_down = true;
        _down_point = ev.GetPosition ();
        _first_move = false;
+
+       if (_down_view) {
+               _down_view->content()->set_change_signals_frequent (true);
+       }
 }
 
 void
-Timeline::left_up (wxMouseEvent &)
+Timeline::left_up (wxMouseEvent& ev)
 {
        _left_down = false;
+
+       if (_down_view) {
+               _down_view->content()->set_change_signals_frequent (false);
+       }
+
+       set_position_from_event (ev);
 }
 
 void
@@ -519,9 +557,35 @@ Timeline::mouse_moved (wxMouseEvent& ev)
                return;
        }
 
+       set_position_from_event (ev);
+}
+
+void
+Timeline::right_down (wxMouseEvent& ev)
+{
+       shared_ptr<View> view = event_to_view (ev);
+       shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (view);
+       if (!cv) {
+               return;
+       }
+
+       if (!cv->selected ()) {
+               clear_selection ();
+               cv->set_selected (true);
+       }
+
+       _menu.popup (_film, selected_content (), ev.GetPosition ());
+}
+
+void
+Timeline::set_position_from_event (wxMouseEvent& ev)
+{
        wxPoint const p = ev.GetPosition();
 
        if (!_first_move) {
+               /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
+                  before the drag is considered to have started.
+               */
                int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
                if (dist < 8) {
                        return;
@@ -529,21 +593,67 @@ Timeline::mouse_moved (wxMouseEvent& ev)
                _first_move = true;
        }
 
-       Time const time_diff = (p.x - _down_point.x) / _pixels_per_time_unit;
-       if (_down_view) {
-               shared_ptr<Content> c = _down_view->content().lock();
-               if (c) {
-                       c->set_start (max (static_cast<Time> (0), _down_view_start + time_diff));
-
-                       shared_ptr<Film> film = _film.lock ();
-                       assert (film);
-                       film->set_sequence_video (false);
+       if (!_down_view) {
+               return;
+       }
+       
+       Time new_position = _down_view_position + (p.x - _down_point.x) / _pixels_per_time_unit;
+       
+       if (_snap) {
+               
+               bool first = true;
+               Time nearest_distance = TIME_MAX;
+               Time nearest_new_position = TIME_MAX;
+               
+               /* Find the nearest content edge; this is inefficient */
+               for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+                       shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+                       if (!cv || cv == _down_view) {
+                               continue;
+                       }
+                       
+                       {
+                               /* Snap starts to ends */
+                               Time const d = abs (cv->content()->end() - new_position);
+                               if (first || d < nearest_distance) {
+                                       nearest_distance = d;
+                                       nearest_new_position = cv->content()->end();
+                               }
+                       }
+                       
+                       {
+                               /* Snap ends to starts */
+                               Time const d = abs (cv->content()->position() - (new_position + _down_view->content()->length_after_trim()));
+                               if (d < nearest_distance) {
+                                       nearest_distance = d;
+                                       nearest_new_position = cv->content()->position() - _down_view->content()->length_after_trim ();
+                               }
+                       }
+                       
+                       first = false;
                }
+               
+               if (!first) {
+                       /* Snap if it's close; `close' means within a proportion of the time on the timeline */
+                       if (nearest_distance < (width() / pixels_per_time_unit()) / 32) {
+                               new_position = nearest_new_position;
+                       }
+               }
+       }
+       
+       if (new_position < 0) {
+               new_position = 0;
        }
+       
+       _down_view->content()->set_position (new_position);
+       
+       shared_ptr<Film> film = _film.lock ();
+       assert (film);
+       film->set_sequence_video (false);
 }
 
 void
-Timeline::force_redraw (dcpomatic::Rect const & r)
+Timeline::force_redraw (dcpomatic::Rect<int> const & r)
 {
        RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 }
@@ -555,7 +665,46 @@ Timeline::film () const
 }
 
 void
-Timeline::resized (wxSizeEvent &)
+Timeline::resized ()
 {
        setup_pixels_per_time_unit ();
 }
+
+void
+Timeline::clear_selection ()
+{
+       for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+               shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+               if (cv) {
+                       cv->set_selected (false);
+               }
+       }
+}
+
+Timeline::ContentViewList
+Timeline::selected_views () const
+{
+       ContentViewList sel;
+       
+       for (ViewList::const_iterator i = _views.begin(); i != _views.end(); ++i) {
+               shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+               if (cv && cv->selected()) {
+                       sel.push_back (cv);
+               }
+       }
+
+       return sel;
+}
+
+ContentList
+Timeline::selected_content () const
+{
+       ContentList sel;
+       ContentViewList views = selected_views ();
+       
+       for (ContentViewList::const_iterator i = views.begin(); i != views.end(); ++i) {
+               sel.push_back ((*i)->content ());
+       }
+
+       return sel;
+}