vcs.maemo.org Git - cinaest/blob - src/poster/movie-poster-factory.vala

   1 /* This file is part of Cinaest.
   2  *
   3  * Copyright (C) 2009 Philipp Zabel
   4  *
   5  * Cinaest is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * Cinaest is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with Cinaest. If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 using GLib;
  20
  21 namespace MoviePoster {
  22
  23         public delegate void RequestCallback (Gdk.Pixbuf movieposter, Movie movie);
  24
  25         public class Factory : Object {
  26                 private static Factory the_factory = null;
  27                 internal List<Request> requests;
  28                 internal dynamic DBus.Object server;
  29                 internal bool download_posters;
  30                 private GConf.Client gc;
  31                 private uint cxnid;
  32                 private Gdk.Pixbuf poster_failed;
  33                 private Gdk.Pixbuf icon_failed;
  34
  35                 construct {
  36                         try {
  37                                 var conn = DBus.Bus.get (DBus.BusType.SESSION);
  38                                 server = conn.get_object ("org.maemo.movieposter.IMDb",
  39                                                           "/org/maemo/movieposter/IMDb",
  40                                                           "org.maemo.movieposter.Provider");
  41                                 server.Fetched.connect (this.on_poster_fetched);
  42                                 server.Failed.connect (this.on_poster_failed);
  43                         } catch (Error e) {
  44                                 warning ("Couldn't connect to IMDb poster downloader: %s\n", e.message);
  45                         }
  46                         gc = GConf.Client.get_default ();
  47
  48                         try {
  49                                 download_posters = gc.get_bool ("/apps/cinaest/download_posters");
  50                                 gc.add_dir ("/apps/cinaest", GConf.ClientPreloadType.ONELEVEL);
  51                                 cxnid = gc.notify_add ("/apps/cinaest/download_posters", on_download_posters_changed);
  52                         } catch (Error e) {
  53                                 stdout.printf ("Error installing GConf notification: %s\n", e.message);
  54                         }
  55                 }
  56
  57                 private static void on_download_posters_changed (GConf.Client gc, uint cxnid, GConf.Entry entry) {
  58                         the_factory.download_posters = entry.get_value ().get_bool ();
  59                 }
  60
  61                 public static Factory get_instance () {
  62                         if (the_factory == null)
  63                                 the_factory = new MoviePoster.Factory ();
  64                         return the_factory;
  65                 }
  66
  67                 public int queue (Movie movie, int width, int height, bool cropped, RequestCallback callback) throws Error {
  68                         string path = get_poster_path (movie);
  69
  70                         foreach (Request request in requests) {
  71                                 if (request.movie == movie &&
  72                                     request.width >= width &&
  73                                     request.height >= height)
  74                                         return 0;
  75                         }
  76
  77                         // TODO: make this async / put out of process
  78                         Gdk.Pixbuf pixbuf;
  79                         if (width <= 256 && height <= 256)
  80                                 pixbuf = request_thumbnail (path, width, height, cropped);
  81                         else
  82                                 pixbuf = pixbuf_from_path (path, width, height, cropped);
  83                         if (pixbuf != null) {
  84                                 callback (pixbuf, movie);
  85                                 return 0;
  86                         }
  87
  88                         if (server != null && download_posters) {
  89                                 var request = new Request ();
  90
  91                                 request.handle = server.Fetch (movie.title, movie.year.to_string (), "movie", width, height);
  92                                 request.movie = movie;
  93                                 request.callback = callback;
  94                                 request.width = width;
  95                                 request.height = height;
  96                                 request.cropped = cropped;
  97                                 requests.append (request);
  98                         }
  99                         return 0;
 100                 }
 101
 102                 private Gdk.Pixbuf? request_thumbnail (string path, int width, int height, bool cropped) {
 103                         string thumbnail_path = get_thumbnail_path (path, width, height);
 104
 105                         var pixbuf = pixbuf_from_path (thumbnail_path, width, height, cropped);
 106                         if (pixbuf == null) {
 107                                 pixbuf = pixbuf_from_path (path, width, height, cropped);
 108                                 if (pixbuf != null)
 109                                         pixbuf.save (thumbnail_path, "jpeg", null);
 110                         }
 111
 112                         return pixbuf;
 113                 }
 114
 115                 private Gdk.Pixbuf? pixbuf_from_path (string path, int width, int height, bool cropped) {
 116                         if (FileUtils.test (path, FileTest.IS_REGULAR)) {
 117                                 var pixbuf = new Gdk.Pixbuf.from_file (path);
 118
 119                                 if (pixbuf.width == width && pixbuf.height == height)
 120                                         return pixbuf;
 121
 122                                 if (!cropped && (pixbuf.width == width || pixbuf.height == height))
 123                                         return pixbuf;
 124
 125                                 if (!download_posters ||
 126                                            (pixbuf.width >= width && pixbuf.height >= height) ||
 127                                            (pixbuf.width >= Poster.SMALL_WIDTH && pixbuf.height >= Poster.SMALL_HEIGHT)) {
 128                                         // Scale to fit
 129                                         return scale_to_fit (pixbuf, width, height, cropped);
 130
 131                                 }
 132                         }
 133
 134                         return null;
 135                 }
 136
 137                 private Gdk.Pixbuf scale_to_fit (Gdk.Pixbuf source, int width, int height, bool cropped) {
 138                         Gdk.InterpType interp_type;
 139
 140                         if (width > source.width && height > source.height)
 141                                 interp_type = Gdk.InterpType.HYPER;
 142                         else
 143                                 interp_type = Gdk.InterpType.BILINEAR;
 144
 145                         if (cropped) {
 146                                 double xscale = (double) width / (double) source.width;
 147                                 double yscale = (double) height / (double) source.height;
 148                                 double scale;
 149                                 int ofs_x = 0;
 150                                 int ofs_y = 0;
 151                                 if (xscale > yscale) {
 152                                         scale = xscale;
 153                                         ofs_y = (int) (height - source.height * scale) / 2;
 154                                 } else {
 155                                         scale = yscale;
 156                                         ofs_x = (int) (width - source.width * scale) / 2;
 157                                 }
 158
 159                                 var dest = new Gdk.Pixbuf (Gdk.Colorspace.RGB, true, 8, width, height);
 160                                 source.scale (dest, 0, 0, width, height, ofs_x, ofs_y, scale, scale, interp_type);
 161
 162                                 return dest;
 163                         } else {
 164                                 width = int.min (width,
 165                                                  (source.width * height + source.height / 2) / source.height);
 166                                 height = int.min ((source.height * width + source.width / 2) / source.width,
 167                                                   height);
 168
 169                                 return source.scale_simple (width, height, interp_type);
 170                         }
 171                 }
 172
 173                 private void on_poster_fetched (dynamic DBus.Object server, int handle, string path) {
 174                         Request request = null;
 175                         foreach (Request r in requests) {
 176                                 if (r.handle == handle) {
 177                                         request = r;
 178                                         break;
 179                                 }
 180                         }
 181                         if (request == null)
 182                                 return;
 183
 184                         var pixbuf = request_thumbnail (path, request.width, request.height, request.cropped);
 185
 186                         requests.remove (request);
 187                         request.callback (pixbuf, request.movie);
 188                 }
 189
 190                 private void on_poster_failed (dynamic DBus.Object server, int handle) {
 191                         Request request = null;
 192                         foreach (Request r in requests) {
 193                                 if (r.handle == handle) {
 194                                         request = r;
 195                                         break;
 196                                 }
 197                         }
 198                         if (request == null)
 199                                 return;
 200                         requests.remove (request);
 201                         request.callback (failed_poster (request.width, request.height), request.movie);
 202                 }
 203
 204                 private Gdk.Pixbuf failed_poster (int width, int height) {
 205                         if (width == Poster.ICON_WIDTH && height == Poster.ICON_HEIGHT) {
 206                                 if (icon_failed == null) {
 207                                         // An empty icon for the list view
 208                                         icon_failed = new Gdk.Pixbuf (Gdk.Colorspace.RGB, true, 8, Poster.ICON_WIDTH, Poster.ICON_HEIGHT);
 209                                         icon_failed.fill (0);
 210                                 }
 211                                 return icon_failed;
 212                         }
 213                         if (width == Poster.SMALL_WIDTH && height == Poster.SMALL_HEIGHT) {
 214                                 if (poster_failed == null) try {
 215                                         // Broken image icon for the poster view
 216                                         var no_pic = new Gdk.Pixbuf.from_file ("/usr/share/icons/hicolor/64x64/hildon/imageviewer_no_pic.png");
 217                                         poster_failed = new Gdk.Pixbuf (Gdk.Colorspace.RGB, true, 8, Poster.SMALL_WIDTH, Poster.SMALL_HEIGHT);
 218                                         poster_failed.fill (0);
 219                                         no_pic.copy_area (0, 0, no_pic.width, no_pic.height, poster_failed,
 220                                                           (Poster.SMALL_WIDTH - no_pic.width) / 2, (Poster.SMALL_HEIGHT - no_pic.height) / 2);
 221                                 } catch (Error e) {
 222                                         critical ("Missing imageviewer_no_pic icon: %s\n", e.message);
 223                                 }
 224                                 return poster_failed;
 225                         }
 226                         return null;
 227                 }
 228
 229                 public void join () {
 230                 }
 231
 232                 public static void factory_remove (Movie movie) {
 233                 }
 234
 235                 public static void factory_clean_cache (int max_size, time_t min_mtime) {
 236                 }
 237
 238                 public void clear_queue () {
 239                         if (server != null) {
 240                                 foreach (Request r in requests)
 241                                         server.Unqueue (r.handle);
 242                         }
 243                         requests = null;
 244                 }
 245         }
 246
 247         public class Request {
 248                 public int handle;
 249                 public Movie movie;
 250                 public RequestCallback callback;
 251                 public int width;
 252                 public int height;
 253                 public bool cropped;
 254
 255                 public void unqueue () {
 256                         if (Factory.get_instance ().server != null)
 257                                 Factory.get_instance ().server.Unqueue (this.handle);
 258
 259                         Factory.get_instance ().requests.remove (this);
 260                 }
 261
 262                 public void join () {
 263                 }
 264         }
 265
 266         public static bool is_cached (Movie movie) {
 267                 string filename = get_poster_path (movie);
 268                 if (FileUtils.test (filename, FileTest.IS_REGULAR))
 269                         return true;
 270                 else
 271                         return false;
 272         }
 273
 274         public static string get_poster_path (Movie movie) {
 275         //      return Hildon.albumart_get_path (movie.title, movie.year.to_string (), "movie");
 276                 return Path.build_filename (Environment.get_user_cache_dir (),
 277                                             "media-art",
 278                                             "movie-%s-%s.jpeg".printf (
 279                        Checksum.compute_for_string (ChecksumType.MD5, movie.title.down ()),
 280                        Checksum.compute_for_string (ChecksumType.MD5, movie.year.to_string ())));
 281         }
 282
 283         public static string get_thumbnail_path (string poster_path, int width, int height) {
 284                 bool large = width > 128 || height > 128;
 285
 286                 return Path.build_filename (Environment.get_home_dir (),
 287                                             ".thumbnails",
 288                                             large ? "large" : "normal",
 289                                             "%s.jpeg".printf (
 290                        Checksum.compute_for_string (ChecksumType.MD5, "file://" + poster_path)));
 291         }
 292 }
 293