[LIB-9] Add functional for transcoding vector images

[chesshog.git] / chesshog-graphics / src / main / java / org / hedgecode / chess / img / board / BoardLoader.java

diff --git a/chesshog-graphics/src/main/java/org/hedgecode/chess/img/board/BoardLoader.java b/chesshog-graphics/src/main/java/org/hedgecode/chess/img/board/BoardLoader.java
index c61bd98..e171418 100644 (file)
--- a/chesshog-graphics/src/main/java/org/hedgecode/chess/img/board/BoardLoader.java
+++ b/chesshog-graphics/src/main/java/org/hedgecode/chess/img/board/BoardLoader.java
@@ -27,7 +27,7 @@ import org.hedgecode.chess.img.ImageException;
 import org.hedgecode.chess.img.ImageFilter;
 
 /**
- *
+ * Loader for chess board's set of images.
  *
  * @author Dmitry Samoshin aka gotty
  */
@@ -38,21 +38,20 @@ public class BoardLoader extends AbstractImageLoader {
     private static final String SQUARE_DARK = ImageConstants.DARK_SQUARE_FILENAME;
     private static final String SQUARE_LIGHT = ImageConstants.LIGHT_SQUARE_FILENAME;
 
-    private static final String[] SQUARE_NAMES = {SQUARE_DARK, SQUARE_LIGHT};
+    private static final String BOARD = ImageConstants.BOARD_FILENAME;
+
+    private static final String[] BOARD_SQUARE_NAMES = { BOARD, SQUARE_DARK, SQUARE_LIGHT };
 
     private Map<String, Board> squareSetMap = new HashMap<>();
 
     @Override
     public Board load(String name) throws ImageException {
-        Board board = null;
+        Board board;
         if (Type.STATELESS.equals(loadType()) || !squareSetMap.containsKey(name)) {
             String boardPath = FilenameUtils.getFullPath(SQUARES_DIR, name);
-            SquarePair<BufferedImage> squarePair = loadSquares(boardPath);
-            if (squarePair != null) {
-                board = Board.create(squarePair);
-                if (Type.STATEFUL.equals(loadType())) {
-                    squareSetMap.put(name, board);
-                }
+            board = loadBoard(boardPath);
+            if (Type.STATEFUL.equals(loadType())) {
+                squareSetMap.put(name, board);
             }
         } else {
             board = squareSetMap.get(name);
@@ -72,17 +71,22 @@ public class BoardLoader extends AbstractImageLoader {
         squareSetMap.clear();
     }
 
-    private SquarePair<BufferedImage> loadSquares(String boardPath) throws ImageException {
+    private Board loadBoard(String boardPath) throws ImageException {
         Map<String, BufferedImage> images =
                 loadImages(
                         boardPath,
-                        new ImageFilter(SQUARE_NAMES)
+                        new ImageFilter(BOARD_SQUARE_NAMES)
                 );
-        BufferedImage dark = images.get(SQUARE_DARK);
-        BufferedImage light = images.get(SQUARE_LIGHT);
-        return (dark != null && light != null)
-                ? SquarePair.create(dark, light)
-                : null; // todo: ImageException
+        BufferedImage board = images.get(BOARD);
+        SquarePair<BufferedImage> squarePair = SquarePair.create(
+                images.get(SQUARE_DARK), images.get(SQUARE_LIGHT)
+        );
+        if (board == null && !squarePair.isFilled()) {
+            throw new ImageException("image.incomplete.board.set", boardPath);
+        }
+        return board != null
+                ? Board.create(board)
+                : Board.create(squarePair);
     }
 
 }