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-rw-r--r--pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java45
1 files changed, 23 insertions, 22 deletions
diff --git a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java
index 939a27b2..f0df95c4 100644
--- a/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java
+++ b/pdf-over-signator/src/main/java/at/asit/pdfover/signator/Emblem.java
@@ -17,6 +17,8 @@ package at.asit.pdfover.signator;
import at.asit.pdfover.Util;
// Imports
+import at.asit.pdfover.commons.Constants;
+
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
@@ -26,7 +28,7 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.file.Files;
-import java.nio.file.Paths;
+import java.nio.file.Path;
import java.util.Properties;
import javax.imageio.ImageIO;
@@ -44,15 +46,15 @@ public class Emblem {
**/
private static final Logger log = LoggerFactory.getLogger(Emblem.class);
- private final String fileDir = System.getProperty("user.home") + File.separator + ".pdf-over";
- private final String imgFileName = ".emblem";
- private final String imgFileExt = "png";
- private final String propFileName = ".emblem.properties";
+ private static final String CACHE_DIR = Constants.CONFIG_DIRECTORY;
+ private static final String CACHE_IMG_FILENAME = ".emblem.png";
+ private static final String CACHE_IMG_FORMAT = "png";
+ private static final String CACHE_PROPS_FILENAME = ".emblem.properties";
- private final String imgProp = "IMG";
- private final String hshProp = "HSH";
- private final int maxWidth = 480;
- private final int maxHeight = 600;
+ private static final String PROPKEY_ORIG_PATH = "IMG";
+ private static final String PROPKEY_ORIG_DIGEST = "HSH";
+ private static final int MAX_EMBLEM_WIDTH = 480;
+ private static final int MAX_EMBLEM_HEIGHT = 600;
private String fileName = null;
@@ -65,12 +67,11 @@ public class Emblem {
}
private String getFileHash(String filename) throws IOException {
- InputStream is = Files.newInputStream(Paths.get(this.fileName));
+ InputStream is = Files.newInputStream(Path.of(filename));
return DigestUtils.md5Hex(is);
}
-
- private static BufferedImage scaleImage(BufferedImage img, int maxWidth, int maxHeight) {
+ private static BufferedImage reduceImageSizeIfNecessary(BufferedImage img, int maxWidth, int maxHeight) {
int oheight = img.getHeight();
int owidth = img.getWidth();
@@ -104,7 +105,7 @@ public class Emblem {
public String getFileName() {
String emblemImg = this.fileName;
String emblemHsh = null;
- String cachedEmblemFileName = this.fileDir + File.separator + this.imgFileName + "." + this.imgFileExt;
+ String cachedEmblemFileName = CACHE_DIR + File.separator + CACHE_IMG_FILENAME;
if (emblemImg == null || !(new File(emblemImg).exists()))
return null;
@@ -112,11 +113,11 @@ public class Emblem {
Properties emblemProps = new Properties();
// compare cache, try to load if match
try {
- InputStream in = new FileInputStream(new File(this.fileDir, this.propFileName));
+ InputStream in = new FileInputStream(new File(CACHE_DIR, CACHE_PROPS_FILENAME));
emblemProps.load(in);
- if (emblemImg.equals(emblemProps.getProperty(this.imgProp))) {
+ if (emblemImg.equals(emblemProps.getProperty(PROPKEY_ORIG_PATH))) {
emblemHsh = getFileHash(emblemImg);
- if (emblemHsh.equals(emblemProps.getProperty(this.hshProp))) {
+ if (emblemHsh.equals(emblemProps.getProperty(PROPKEY_ORIG_DIGEST))) {
log.debug("Emblem cache hit: " + cachedEmblemFileName);
return cachedEmblemFileName;
}
@@ -130,16 +131,16 @@ public class Emblem {
// create new cache
if (emblemHsh == null)
emblemHsh = getFileHash(emblemImg);
- emblemProps.setProperty(this.imgProp, emblemImg);
- emblemProps.setProperty(this.hshProp, emblemHsh);
+ emblemProps.setProperty(PROPKEY_ORIG_PATH, emblemImg);
+ emblemProps.setProperty(PROPKEY_ORIG_DIGEST, emblemHsh);
File imgFile = new File(emblemImg);
- img = scaleImage(img, this.maxWidth, this.maxHeight);
BufferedImage img = Util.readImageWithEXIFRotation(imgFile);
+ img = reduceImageSizeIfNecessary(img, MAX_EMBLEM_WIDTH, MAX_EMBLEM_HEIGHT);
- File file = new File(this.fileDir, this.imgFileName + "." + this.imgFileExt);
- ImageIO.write(img, this.imgFileExt, file); // ignore returned boolean
- OutputStream out = new FileOutputStream(new File(this.fileDir, this.propFileName));
+ File file = new File(CACHE_DIR, CACHE_IMG_FILENAME + "." + CACHE_IMG_FORMAT);
+ ImageIO.write(img, CACHE_IMG_FORMAT, file); // ignore returned boolean
+ OutputStream out = new FileOutputStream(new File(CACHE_DIR, CACHE_PROPS_FILENAME));
emblemProps.store(out, null);
} catch (IOException e) {
log.error("Can't save emblem cache", e);