[LIB-9] Add functional for transcoding vector images

[chesshog.git] / chesshog-graphics / src / main / java / org / hedgecode / chess / img / bitmap / BitmapImageShaper.java

diff --git a/chesshog-graphics/src/main/java/org/hedgecode/chess/img/bitmap/BitmapImageShaper.java b/chesshog-graphics/src/main/java/org/hedgecode/chess/img/bitmap/BitmapImageShaper.java
new file mode 100644 (file)
index 0000000..10a8e33
--- /dev/null
+++ b/chesshog-graphics/src/main/java/org/hedgecode/chess/img/bitmap/BitmapImageShaper.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2018-2019. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.img.bitmap;
+
+import java.awt.Graphics;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+
+import javax.imageio.ImageIO;
+
+import org.hedgecode.chess.img.ImageException;
+import org.hedgecode.chess.img.ImageShaper;
+
+/**
+ * Shaper for bitmap images.
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class BitmapImageShaper implements ImageShaper {
+
+    private BitmapImageShaper() {
+    }
+
+    @Override
+    public BufferedImage shape(InputStream imageStream, int size) throws ImageException {
+        try {
+            return scaledImage(
+                    ImageIO.read(imageStream),
+                    size
+            );
+        } catch (IOException e) {
+            throw new ImageException("image.unable.load.bitmap", e.getMessage());
+        }
+    }
+
+    @Override
+    public BufferedImage shape(URL imageUrl, int size) throws ImageException {
+        try {
+            return scaledImage(
+                    ImageIO.read(imageUrl),
+                    size
+            );
+        } catch (IOException e) {
+            throw new ImageException("image.unable.load.bitmap", e.getMessage());
+        }
+    }
+
+    @Override
+    public BufferedImage shape(File imageFile, int size) throws ImageException {
+        try {
+            return scaledImage(
+                    ImageIO.read(imageFile),
+                    size
+            );
+        } catch (IOException e) {
+            throw new ImageException("image.unable.load.bitmap", e.getMessage());
+        }
+    }
+
+    private BufferedImage scaledImage(BufferedImage image, int size) {
+        if (image.getWidth() == size && image.getHeight() == size) {
+            return image;
+        }
+        BufferedImage scaledImage = new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
+        Graphics graphics = scaledImage.createGraphics();
+        graphics.drawImage(
+                image.getScaledInstance(size, size, BufferedImage.SCALE_SMOOTH),
+                0, 0, null
+        );
+        graphics.dispose();
+        return scaledImage;
+    }
+
+    public static ImageShaper create() {
+        return new BitmapImageShaper();
+    }
+
+}