src/main/java/charactermanaj/graphics/ColorConvertedImageCachedLoader.java

   1 package charactermanaj.graphics;\r
   2 \r
   3 import java.io.IOException;\r
   4 \r
   5 import charactermanaj.graphics.colormodel.ColorModel;\r
   6 import charactermanaj.graphics.filters.ColorConvertParameter;\r
   7 import charactermanaj.graphics.io.ImageCache;\r
   8 import charactermanaj.graphics.io.ImageCachedLoader;\r
   9 import charactermanaj.graphics.io.ImageLoader;\r
  10 import charactermanaj.graphics.io.ImageResource;\r
  11 import charactermanaj.graphics.io.LoadedImage;\r
  12 \r
  13 /**\r
  14  * 画像リソースに対する色変換後の画像イメージを返します.<br>\r
  15  * 一度読み込まれ色変換された画像は、画像ファイルの更新日が同一であり、且つ、色パラメータに変更がなければ\r
  16  * 読み込み済みの画像イメージを返します.<br>\r
  17  * @author seraphy\r
  18  *\r
  19  */\r
  20 public class ColorConvertedImageCachedLoader extends ColorConvertedImageLoaderImpl {\r
  21 \r
  22         private ImageCache<ColorConvertedImageKey> caches = new ImageCache<ColorConvertedImageKey>();\r
  23 \r
  24         public ColorConvertedImageCachedLoader() {\r
  25                 this(new ImageCachedLoader());\r
  26         }\r
  27 \r
  28         public ColorConvertedImageCachedLoader(ImageLoader imageLoader) {\r
  29                 super(imageLoader);\r
  30         }\r
  31 \r
  32         @Override\r
  33         public LoadedImage load(ImageResource file,\r
  34                         ColorConvertParameter colorConvParam, ColorModel colorModel)\r
  35                         throws IOException {\r
  36                 if (file == null) {\r
  37                         throw new IllegalArgumentException();\r
  38                 }\r
  39 \r
  40                 ColorConvertParameter param;\r
  41                 if (colorConvParam == null) {\r
  42                         param = new ColorConvertParameter();\r
  43                 } else {\r
  44                         param = colorConvParam.clone();\r
  45                 }\r
  46                 ColorConvertedImageKey key = new ColorConvertedImageKey(param, file);\r
  47 \r
  48                 synchronized (caches) {\r
  49                         LoadedImage loadedImage = caches.get(key);\r
  50                         if (loadedImage == null) {\r
  51                                 loadedImage = super.load(file, param, colorModel);\r
  52                                 caches.set(key, loadedImage);\r
  53                         }\r
  54                         return loadedImage;\r
  55                 }\r
  56         }\r
  57 \r
  58         @Override\r
  59         public void close() {\r
  60             caches.clear();\r
  61             super.close();\r
  62         }\r
  63 \r
  64         public void unlockImages() {\r
  65                 caches.unlockImages();\r
  66         }\r
  67 \r
  68 }\r
  69 \r
  70 final class ColorConvertedImageKey {\r
  71 \r
  72         private final ColorConvertParameter colorConvParameter;\r
  73 \r
  74         private final ImageResource imageResource;\r
  75 \r
  76         private final long lastModified;\r
  77 \r
  78         private final int hashCode;\r
  79 \r
  80         public ColorConvertedImageKey(ColorConvertParameter colorConvParameter, ImageResource imageResource) {\r
  81                 if (colorConvParameter == null || imageResource == null) {\r
  82                         throw new IllegalArgumentException();\r
  83                 }\r
  84                 this.colorConvParameter = colorConvParameter;\r
  85                 this.imageResource = imageResource;\r
  86                 this.lastModified = imageResource.lastModified();\r
  87                 this.hashCode = imageResource.hashCode()\r
  88                                 ^ colorConvParameter.hashCode() ^ (int) this.lastModified;\r
  89         }\r
  90 \r
  91         @Override\r
  92         public int hashCode() {\r
  93                 return this.hashCode;\r
  94         }\r
  95 \r
  96         @Override\r
  97         public boolean equals(Object obj) {\r
  98                 if (obj == this) {\r
  99                         return true;\r
 100                 }\r
 101                 if (obj != null && obj instanceof ColorConvertedImageKey) {\r
 102                         ColorConvertedImageKey other = (ColorConvertedImageKey) obj;\r
 103                         return lastModified == other.lastModified\r
 104                                         && imageResource.equals(other.imageResource)\r
 105                                         && colorConvParameter.equals(other.colorConvParameter);\r
 106                 }\r
 107                 return false;\r
 108         }\r
 109 }\r