From 3addc990ae79aaf17d9eda9b5967d9cb94fa79e1 Mon Sep 17 00:00:00 2001
From: Jakob Heher <jakob.heher@iaik.tugraz.at>
Date: Thu, 4 Aug 2022 11:17:37 +0200
Subject: move image util methods to a more suitable place

---
 .../src/main/java/at/asit/pdfover/Util.java        | 147 ---------------------
 1 file changed, 147 deletions(-)
 delete mode 100644 pdf-over-commons/src/main/java/at/asit/pdfover/Util.java

(limited to 'pdf-over-commons/src/main/java/at/asit/pdfover/Util.java')

diff --git a/pdf-over-commons/src/main/java/at/asit/pdfover/Util.java b/pdf-over-commons/src/main/java/at/asit/pdfover/Util.java
deleted file mode 100644
index ff33fb5e..00000000
--- a/pdf-over-commons/src/main/java/at/asit/pdfover/Util.java
+++ /dev/null
@@ -1,147 +0,0 @@
-package at.asit.pdfover;
-
-import java.awt.Graphics2D;
-import java.awt.image.BufferedImage;
-import java.io.File;
-import java.io.IOException;
-import java.util.Iterator;
-
-import javax.imageio.ImageIO;
-import javax.imageio.ImageReadParam;
-import javax.imageio.ImageReader;
-import javax.imageio.stream.ImageInputStream;
-
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.drew.imaging.ImageMetadataReader;
-import com.drew.imaging.ImageProcessingException;
-import com.drew.metadata.Metadata;
-import com.drew.metadata.MetadataException;
-import com.drew.metadata.exif.ExifDirectoryBase;
-import com.drew.metadata.exif.ExifIFD0Directory;
-
-class EXIFRotation {
-    private static final Logger log = LoggerFactory.getLogger(EXIFRotation.class);
-    /**
-     * rotate by this times Math.PI / 2
-     */
-    final int rotationInQuarters;
-    /**
-     * whether you should mirror (left-right) the image AFTER rotation
-     */
-    final boolean shouldMirrorLR;
-
-    private EXIFRotation(int rotateQuarters, boolean mirrorLR) {
-        this.rotationInQuarters = rotateQuarters;
-        this.shouldMirrorLR = mirrorLR;
-    }
-
-    public static final EXIFRotation NONE = new EXIFRotation(0, false);
-
-    private static final EXIFRotation[] rotationForIndex = {
-        /* invalid (0) */ NONE,
-        /* 1 */ NONE,
-        /* 2 */ new EXIFRotation(0, true),
-        /* 3 */ new EXIFRotation(2, false),
-        /* 4 */ new EXIFRotation(2, true),
-        /* 5 */ new EXIFRotation(1, true),
-        /* 6 */ new EXIFRotation(1, false),
-        /* 7 */ new EXIFRotation(3, true),
-        /* 8 */ new EXIFRotation(3, false)
-    };
-
-    static EXIFRotation For(File file) throws IOException
-    {
-        try
-        {
-            Metadata metadata = ImageMetadataReader.readMetadata(file);
-            if (metadata == null)
-                return NONE;
-            ExifIFD0Directory metaDir = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
-            if (metaDir == null)
-                return NONE;
-            int orientation = metaDir.getInt(ExifDirectoryBase.TAG_ORIENTATION);
-            if (rotationForIndex.length <= orientation)
-            {
-                log.warn("Invalid orientation {} in EXIF metadata for {}", orientation, file.getName());
-                return NONE;
-            }
-            return rotationForIndex[orientation];
-        } catch (ImageProcessingException | MetadataException e) {
-            log.error("Failed to read EXIF metadata for {}", file.getName(), e);
-            return NONE;
-        }
-    }
-}
-
-public final class Util {
-    
-    /**
-     * ImageIO.read, except it honors EXIF rotation metadata
-     * (which the default, for some reason, does not)
-     */
-    public static final BufferedImage readImageWithEXIFRotation(File input) throws IOException
-    {
-        if (input == null)
-            throw new IllegalArgumentException("input == null");
-        if (!input.canRead())
-            throw new IllegalArgumentException("cannot read input");
-        
-        ImageInputStream stream = ImageIO.createImageInputStream(input);
-        if (stream == null)
-            throw new RuntimeException("Failed to create ImageInputStream for some reason?");
-        
-        Iterator<ImageReader> iter = ImageIO.getImageReaders(stream);
-        if (!iter.hasNext())
-        {
-            stream.close();
-            return null;
-        }
-
-        ImageReader reader = iter.next();
-        boolean isJPEG = reader.getFormatName().equals("JPEG");
-        ImageReadParam param = reader.getDefaultReadParam();
-        reader.setInput(stream, true, false);
-        BufferedImage image;
-        try {
-            image = reader.read(0, param);
-        } finally {
-            reader.dispose();
-            stream.close();
-        }
-
-        if (!isJPEG)
-            return image;
-
-        EXIFRotation rotation = EXIFRotation.For(input);
-        if (rotation.rotationInQuarters > 0)
-        {
-            boolean isSideways = ((rotation.rotationInQuarters % 2) == 1);
-            int sourceWidth = image.getWidth();
-            int sourceHeight = image.getHeight();
-            int targetWidth = isSideways ? sourceHeight : sourceWidth;
-            int targetHeight = isSideways ? sourceWidth : sourceHeight;
-            
-            BufferedImage result = new BufferedImage(targetWidth, targetHeight, image.getType());
-            Graphics2D g = result.createGraphics();
-            g.translate((targetWidth - sourceWidth)/2, (targetHeight - sourceHeight)/2);
-            g.rotate(rotation.rotationInQuarters * Math.PI / 2, sourceWidth/2, sourceHeight/2);
-            g.drawRenderedImage(image, null);
-            g.dispose();
-            image = result;
-        }
-
-        if (rotation.shouldMirrorLR)
-        {
-            int width = image.getWidth();
-            int height = image.getHeight();
-            BufferedImage result = new BufferedImage(width, height, image.getType());
-            Graphics2D g = result.createGraphics();
-            g.drawImage(image, width, 0, -width, height, null);
-            g.dispose();
-            image = result;
-        }
-        return image;
-    }
-}
-- 
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