+/*
+ Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/** @file src/film_viewer.h
+ * @brief A wx widget to view `thumbnails' of a Film.
+ */
+
#include <wx/wx.h>
+#include "lib/film.h"
-class Film;
-class ThumbPanel;
+class wxToggleButton;
+class FFmpegPlayer;
+class Image;
+class RGBPlusAlphaImage;
+class PlayerVideoFrame;
-class FilmViewer
+/** @class FilmViewer
+ * @brief A wx widget to view a preview of a Film.
+ *
+ * The film takes the following path through the viewer:
+ *
+ * 1. fetch_next_frame() asks our _player to decode some data. If it does, process_video()
+ * will be called.
+ *
+ * 2. process_video() takes the image from the player (_frame).
+ *
+ * 3. fetch_next_frame() calls _panel->Refresh() and _panel->Update() which results in
+ * paint_panel() being called; this creates frame_bitmap from _frame and blits it to the display.
+ *
+ * fetch_current_frame_again() asks the player to re-emit its current frame on the next pass(), and then
+ * starts from step #1.
+ */
+class FilmViewer : public wxPanel
{
public:
- FilmViewer (Film *, wxFrame *);
+ FilmViewer (boost::shared_ptr<Film>, wxWindow *);
- void load_thumbnail (int);
- wxPanel* get_widget ();
+ void set_film (boost::shared_ptr<Film>);
private:
- Film* _film;
+ void paint_panel ();
+ void panel_sized (wxSizeEvent &);
+ void slider_moved ();
+ void play_clicked ();
+ void timer ();
+ void process_video (boost::shared_ptr<PlayerVideoFrame>, Time);
+ void calculate_sizes ();
+ void check_play_state ();
+ void fetch_current_frame_again ();
+ void fetch_next_frame ();
+ void active_jobs_changed (bool);
+ void back_clicked ();
+ void forward_clicked ();
+ void player_changed (bool);
+ void set_position_text (Time);
+
+ boost::shared_ptr<Film> _film;
+ boost::shared_ptr<Player> _player;
+
+ wxSizer* _v_sizer;
+ wxPanel* _panel;
+ wxSlider* _slider;
+ wxButton* _back_button;
+ wxButton* _forward_button;
+ wxStaticText* _frame_number;
+ wxStaticText* _timecode;
+ wxToggleButton* _play_button;
+ wxTimer _timer;
+
+ boost::shared_ptr<const Image> _frame;
+ bool _got_frame;
- wxImage* _image;
- wxImage* _scaled_image;
- wxBitmap* _bitmap;
- ThumbPanel* _thumb_panel;
+ /** Size of our output (including padding if we have any) */
+ libdcp::Size _out_size;
+ /** Size of the panel that we have available */
+ libdcp::Size _panel_size;
};