More various tweaks.
[dcpomatic.git] / src / wx / timeline.cc
index 731e721689e3703776359ff5695532727217621c..96bd2ccd4866a9585875b7cf8b232d7e5eefacff 100644 (file)
@@ -1,3 +1,5 @@
+/* -*- c-basic-offset: 8; default-tab-width: 8; -*- */
+
 /*
     Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
 
@@ -19,6 +21,8 @@
 
 #include <list>
 #include <wx/graphics.h>
+#include <boost/weak_ptr.hpp>
+#include "film.h"
 #include "timeline.h"
 #include "wx_util.h"
 #include "playlist.h"
@@ -27,6 +31,7 @@ using std::list;
 using std::cout;
 using std::max;
 using boost::shared_ptr;
+using boost::weak_ptr;
 using boost::dynamic_pointer_cast;
 using boost::bind;
 
@@ -39,64 +44,117 @@ public:
 
        }
                
-       virtual void paint (wxGraphicsContext *) = 0;
+       void paint (wxGraphicsContext* g)
+       {
+               _last_paint_bbox = bbox ();
+               do_paint (g);
+       }
+       
+       void force_redraw ()
+       {
+               _timeline.force_redraw (_last_paint_bbox);
+               _timeline.force_redraw (bbox ());
+       }
+
        virtual Rect bbox () const = 0;
 
 protected:
+       virtual void do_paint (wxGraphicsContext *) = 0;
+       
        int time_x (Time t) const
        {
-               return _timeline.tracks_position().x + t * _timeline.pixels_per_second();
+               return _timeline.tracks_position().x + t * _timeline.pixels_per_time_unit();
        }
        
        Timeline& _timeline;
+
+private:
+       Rect _last_paint_bbox;
 };
 
 class ContentView : public View
 {
 public:
-       ContentView (Timeline& tl, boost::shared_ptr<const Content> c, Time s, int t)
+       ContentView (Timeline& tl, shared_ptr<Content> c, int t)
                : View (tl)
                , _content (c)
-               , _start (s)
                , _track (t)
                , _selected (false)
        {
+               c->Changed.connect (bind (&ContentView::content_changed, this, _2));
+       }
+
+       Rect bbox () const
+       {
+               shared_ptr<const Film> film = _timeline.film ();
+               shared_ptr<const Content> content = _content.lock ();
+               if (!film || !content) {
+                       return Rect ();
+               }
+               
+               return Rect (
+                       time_x (content->start ()) - 8,
+                       y_pos (_track) - 8,
+                       content->length () * _timeline.pixels_per_time_unit() + 16,
+                       _timeline.track_height() + 16
+                       );
+       }
+
+       void set_selected (bool s) {
+               _selected = s;
+               force_redraw ();
+       }
+       
+       bool selected () const {
+               return _selected;
+       }
 
+       weak_ptr<Content> content () const {
+               return _content;
        }
 
-       void paint (wxGraphicsContext* gc)
+       virtual wxString type () const = 0;
+       virtual wxColour colour () const = 0;
+       
+private:
+
+       void do_paint (wxGraphicsContext* gc)
        {
+               shared_ptr<const Film> film = _timeline.film ();
                shared_ptr<const Content> content = _content.lock ();
-               if (!content) {
+               if (!film || !content) {
                        return;
                }
-               
-               Time const len = content->temporal_length ();
+
+               Time const start = content->start ();
+               Time const len = content->length ();
+
+               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 (wxColour (200, 200, 200), wxBRUSHSTYLE_SOLID));
+                       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 (wxColour (200, 200, 200), wxSOLID));
+                       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));
-               path.AddLineToPoint (time_x (_start + len), y_pos (_track));
-               path.AddLineToPoint (time_x (_start + len), y_pos (_track + 1));
-               path.AddLineToPoint (time_x (_start),       y_pos (_track + 1));
-               path.AddLineToPoint (time_x (_start),       y_pos (_track));
+               path.MoveToPoint    (time_x (start),       y_pos (_track));
+               path.AddLineToPoint (time_x (start + len), y_pos (_track));
+               path.AddLineToPoint (time_x (start + len), y_pos (_track + 1));
+               path.AddLineToPoint (time_x (start),       y_pos (_track + 1));
+               path.AddLineToPoint (time_x (start),       y_pos (_track));
                gc->StrokePath (path);
                gc->FillPath (path);
 
@@ -107,42 +165,24 @@ public:
                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_second(), _timeline.track_height()));
-               gc->DrawText (name, time_x (_start) + 12, y_pos (_track + 1) - name_height - 4);
+               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->ResetClip ();
        }
 
-       Rect bbox () const
+       int y_pos (int t) const
        {
-               shared_ptr<const Content> content = _content.lock ();
-               if (!content) {
-                       return Rect ();
-               }
-               
-               return Rect (time_x (_start), y_pos (_track), content->temporal_length() * _timeline.pixels_per_second(), _timeline.track_height());
-       }
-
-       void set_selected (bool s) {
-               _selected = s;
-               _timeline.force_redraw (bbox ());
-       }
-       
-       bool selected () const {
-               return _selected;
+               return _timeline.tracks_position().y + t * _timeline.track_height();
        }
 
-       virtual wxString type () const = 0;
-       virtual wxColour colour () const = 0;
-       
-private:
-       
-       int y_pos (int t) const
+       void content_changed (int p)
        {
-               return _timeline.tracks_position().y + t * _timeline.track_height();
+               if (p == ContentProperty::START || p == VideoContentProperty::VIDEO_LENGTH) {
+                       force_redraw ();
+               }
        }
 
-       boost::weak_ptr<const Content> _content;
-       Time _start;
+       boost::weak_ptr<Content> _content;
        int _track;
        bool _selected;
 };
@@ -150,8 +190,8 @@ private:
 class AudioContentView : public ContentView
 {
 public:
-       AudioContentView (Timeline& tl, boost::shared_ptr<const Content> c, Time s, int t)
-               : ContentView (tl, c, s, t)
+       AudioContentView (Timeline& tl, shared_ptr<Content> c, int t)
+               : ContentView (tl, c, t)
        {}
        
 private:
@@ -169,8 +209,8 @@ private:
 class VideoContentView : public ContentView
 {
 public:
-       VideoContentView (Timeline& tl, boost::shared_ptr<const Content> c, Time s, int t)
-               : ContentView (tl, c, s, t)
+       VideoContentView (Timeline& tl, shared_ptr<Content> c, int t)
+               : ContentView (tl, c, t)
        {}
 
 private:       
@@ -194,7 +234,7 @@ public:
                , _y (y)
        {}
 
-       void paint (wxGraphicsContext* gc)
+       void do_paint (wxGraphicsContext* gc)
        {
 #if wxMAJOR_VERSION == 2 && wxMINOR_VERSION >= 9
                gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxPENSTYLE_SOLID));
@@ -202,7 +242,7 @@ public:
                gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxSOLID));
 #endif             
                
-               int mark_interval = rint (128 / _timeline.pixels_per_second ());
+               int mark_interval = rint (128 / (TIME_HZ * _timeline.pixels_per_time_unit ()));
                if (mark_interval > 5) {
                        mark_interval -= mark_interval % 5;
                }
@@ -226,13 +266,13 @@ public:
                gc->StrokePath (path);
 
                Time t = 0;
-               while ((t * _timeline.pixels_per_second()) < _timeline.width()) {
+               while ((t * _timeline.pixels_per_time_unit()) < _timeline.width()) {
                        wxGraphicsPath path = gc->CreatePath ();
                        path.MoveToPoint (time_x (t), _y - 4);
                        path.AddLineToPoint (time_x (t), _y + 4);
                        gc->StrokePath (path);
 
-                       int tc = t;
+                       int tc = t / TIME_HZ;
                        int const h = tc / 3600;
                        tc -= h * 3600;
                        int const m = tc / 60;
@@ -246,11 +286,12 @@ public:
                        wxDouble str_leading;
                        gc->GetTextExtent (str, &str_width, &str_height, &str_descent, &str_leading);
                        
-                       int const tx = _timeline.x_offset() + t * _timeline.pixels_per_second();
+                       int const tx = _timeline.x_offset() + t * _timeline.pixels_per_time_unit();
                        if ((tx + str_width) < _timeline.width()) {
                                gc->DrawText (str, time_x (t), _y + 16);
                        }
-                       t += mark_interval;
+                       
+                       t += mark_interval * TIME_HZ;
                }
        }
 
@@ -263,24 +304,29 @@ private:
        int _y;
 };
 
-Timeline::Timeline (wxWindow* parent, shared_ptr<Playlist> pl)
-       : wxPanel (parent)
-       , _playlist (pl)
-       , _pixels_per_second (0)
+Timeline::Timeline (wxWindow* parent, shared_ptr<const Film> film)
+       : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
+       , _film (film)
+       , _pixels_per_time_unit (0)
+       , _left_down (false)
+       , _down_view_start (0)
+       , _first_move (false)
 {
        SetDoubleBuffered (true);
 
-       setup_pixels_per_second ();
+       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);
 
        SetMinSize (wxSize (640, tracks() * track_height() + 96));
 
        playlist_changed ();
 
-       pl->Changed.connect (bind (&Timeline::playlist_changed, this));
-       pl->ContentChanged.connect (bind (&Timeline::playlist_changed, this));
+       film->playlist()->Changed.connect (bind (&Timeline::playlist_changed, this));
 }
 
 void
@@ -288,11 +334,6 @@ Timeline::paint (wxPaintEvent &)
 {
        wxPaintDC dc (this);
 
-       shared_ptr<Playlist> pl = _playlist.lock ();
-       if (!pl) {
-               return;
-       }
-
        wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
        if (!gc) {
                return;
@@ -300,9 +341,6 @@ Timeline::paint (wxPaintEvent &)
 
        gc->SetFont (gc->CreateFont (*wxNORMAL_FONT));
 
-       /* XXX */
-       _pixels_per_second = (width() - x_offset() * 2) / (pl->content_length() / pl->video_frame_rate());
-
        for (list<shared_ptr<View> >::iterator i = _views.begin(); i != _views.end(); ++i) {
                (*i)->paint (gc);
        }
@@ -313,30 +351,21 @@ Timeline::paint (wxPaintEvent &)
 void
 Timeline::playlist_changed ()
 {
-       shared_ptr<Playlist> pl = _playlist.lock ();
-       if (!pl) {
+       shared_ptr<const Film> fl = _film.lock ();
+       if (!fl) {
                return;
        }
 
        _views.clear ();
-       
-       int track = 0;
-       Time time = 0;
-       list<shared_ptr<const VideoContent> > vc = pl->video ();
-       for (list<shared_ptr<const VideoContent> >::const_iterator i = vc.begin(); i != vc.end(); ++i) {
-               _views.push_back (shared_ptr<View> (new VideoContentView (*this, *i, time, track)));
-               time += (*i)->temporal_length ();
-       }
 
-       ++track;
-       time = 0;
-       list<shared_ptr<const AudioContent> > ac = pl->audio ();
-       for (list<shared_ptr<const AudioContent> >::const_iterator i = ac.begin(); i != ac.end(); ++i) {
-               _views.push_back (shared_ptr<View> (new AudioContentView (*this, *i, time, track)));
-               if (pl->audio_from() != Playlist::AUDIO_FFMPEG) {
-                       ++track;
-               } else {
-                       time += (*i)->temporal_length ();
+       Playlist::ContentList content = fl->playlist()->content ();
+
+       for (Playlist::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)));
+               }
+               if (dynamic_pointer_cast<AudioContent> (*i)) {
+                       _views.push_back (shared_ptr<View> (new AudioContentView (*this, *i, 1)));
                }
        }
 
@@ -348,28 +377,19 @@ Timeline::playlist_changed ()
 int
 Timeline::tracks () const
 {
-       shared_ptr<Playlist> pl = _playlist.lock ();
-       if (!pl) {
-               return 0;
-       }
-
-       if (pl->audio_from() == Playlist::AUDIO_FFMPEG) {
-               return 2;
-       }
-
-       return 1 + max (size_t (1), pl->audio().size());
+       /* XXX */
+       return 2;
 }
 
 void
-Timeline::setup_pixels_per_second ()
+Timeline::setup_pixels_per_time_unit ()
 {
-       shared_ptr<Playlist> pl = _playlist.lock ();
-       if (!pl) {
+       shared_ptr<const Film> film = _film.lock ();
+       if (!film) {
                return;
        }
 
-       /* XXX */
-       _pixels_per_second = (width() - x_offset() * 2) / (pl->content_length() / pl->video_frame_rate());
+       _pixels_per_time_unit = static_cast<double>(width() - x_offset() * 2) / film->length();
 }
 
 void
@@ -381,12 +401,60 @@ Timeline::left_down (wxMouseEvent& ev)
                ++i;
        }
 
+       _down_view.reset ();
+
+       if (i != _views.end ()) {
+               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 ();
+               }
+       }
+
        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);
                }
        }
+
+       _left_down = true;
+       _down_point = ev.GetPosition ();
+       _first_move = false;
+}
+
+void
+Timeline::left_up (wxMouseEvent &)
+{
+       _left_down = false;
+}
+
+void
+Timeline::mouse_moved (wxMouseEvent& ev)
+{
+       if (!_left_down) {
+               return;
+       }
+
+       wxPoint const p = ev.GetPosition();
+
+       if (!_first_move) {
+               int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
+               if (dist < 8) {
+                       return;
+               }
+               _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 (_down_view_start + time_diff);
+               }
+       }
 }
 
 void
@@ -394,3 +462,15 @@ Timeline::force_redraw (Rect const & r)
 {
        RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 }
+
+shared_ptr<const Film>
+Timeline::film () const
+{
+       return _film.lock ();
+}
+
+void
+Timeline::resized (wxSizeEvent &)
+{
+       setup_pixels_per_time_unit ();
+}