X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Fwx%2Ffilm_viewer.h;h=814a095af374753ac17a596651e9397211b0b5e0;hb=47f25009bcbc765e397bcb471dd361a511c99daf;hp=e28703fdd89ea9e3cbd9981ac39ead1edbbb103f;hpb=956da4b106e14c49b179176acf6484c479c21094;p=dcpomatic.git

diff --git a/src/wx/film_viewer.h b/src/wx/film_viewer.h
index e28703fdd..814a095af 100644
--- a/src/wx/film_viewer.h
+++ b/src/wx/film_viewer.h
@@ -32,6 +32,25 @@ class Subtitle;
 
 /** @class FilmViewer
  *  @brief A wx widget to view a preview of a Film.
+ *
+ *  The film takes the following path through the viewer:
+ *
+ *  1.  get_frame() asks our _player to decode some data.  If it does, process_video()
+ *      will be called.
+ *
+ *  2.  process_video() takes the image and subtitle from the decoder (_raw_frame and _raw_sub)
+ *      and calls raw_to_display().
+ * 
+ *  3.  raw_to_display() copies _raw_frame to _display_frame, processing it and scaling it.
+ *
+ *  4.  calling _panel->Refresh() and _panel->Update() results in paint_panel() being called;
+ *      this creates frame_bitmap from _display_frame and blits it to the display.  It also
+ *      blits the subtitle, if required.
+ *
+ * update_from_decoder() asks the player to re-emit its current frame on the next pass(), and then
+ * starts from step #1.
+ *
+ * update_from_raw() starts at step #3, then calls _panel->Refresh and _panel->Update.
  */
 class FilmViewer : public wxPanel
 {
@@ -42,13 +61,13 @@ public:
 
 private:
 	void film_changed (Film::Property);
-	void film_content_changed (int);
+	void film_content_changed (boost::weak_ptr<Content>, int);
 	void paint_panel (wxPaintEvent &);
 	void panel_sized (wxSizeEvent &);
 	void slider_moved (wxScrollEvent &);
 	void play_clicked (wxCommandEvent &);
 	void timer (wxTimerEvent &);
-	void process_video (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>);
+	void process_video (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>, double);
 	void calculate_sizes ();
 	void check_play_state ();
 	void update_from_raw ();
@@ -56,7 +75,8 @@ private:
 	void raw_to_display ();
 	void get_frame ();
 	void active_jobs_changed (bool);
-	void setup_player ();
+	void back_clicked (wxCommandEvent &);
+	void forward_clicked (wxCommandEvent &);
 
 	boost::shared_ptr<Film> _film;
 	boost::shared_ptr<Player> _player;
@@ -64,12 +84,19 @@ private:
 	wxSizer* _v_sizer;
 	wxPanel* _panel;
 	wxSlider* _slider;
+	wxButton* _back_button;
+	wxButton* _forward_button;
+	wxStaticText* _frame;
+	wxStaticText* _timecode;
 	wxToggleButton* _play_button;
 	wxTimer _timer;
 
 	boost::shared_ptr<Image> _raw_frame;
 	boost::shared_ptr<Subtitle> _raw_sub;
 	boost::shared_ptr<Image> _display_frame;
+	/* The x offset at which we display the actual film content; this corresponds
+	   to the film's padding converted to our coordinates.
+	*/
 	int _display_frame_x;
 	boost::shared_ptr<RGBPlusAlphaImage> _display_sub;
 	Position _display_sub_position;
@@ -81,6 +108,4 @@ private:
 	libdcp::Size _film_size;
 	/** Size of the panel that we have available */
 	libdcp::Size _panel_size;
-
-	bool _clear_required;
 };