first commit

.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+.kotlin
+
+### IntelliJ IDEA ###
+.idea
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

README.md

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+# librewatmark (work in progress)
+
+Tool to put a watermark on sensitive documents. Useful to mitigate identity theft etc.
+Some services for this already exist on the Web, but then you have to trust them. Here the program runs on your machine, offline.
+Using the ImageJ library.

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>librewatermark</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>net.imagej</groupId>
+            <artifactId>ij</artifactId>
+            <version>1.51h</version>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/org/example/Main.java

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+package org.example;
+
+import ij.IJ;
+import ij.ImagePlus;
+import ij.process.ImageProcessor;
+
+import java.awt.*;
+import java.io.File;
+
+/*
+TODO:
+- Parse properly the CLI arguments
+- Add error handling
+- Write many lines with an angle
+- Write for any image (format & responsiveness)
+- optional: Export to PDF?
+ */
+
+public class Main {
+    public static void main(String[] args) {
+
+        if (args.length == 0)
+        {
+            System.out.println("Usage: java -jar watermark.jar <input file> -s <string> [-o <output file>]");
+            System.exit(0);
+        }
+
+        File f = null;
+
+        for (int i=0; i<args.length; i++)
+        {
+            System.out.println("Argument " + i + ": " + args[i]);
+
+            if (i == 0) {
+                // First argument is input file, if not, gtfo here
+                String filename = args[i];
+                f = new File(filename);
+                if (!f.exists() || f.isDirectory()) {
+                    System.out.println("Input file \"" + filename + "\" does not exist.");
+                    System.exit(1);
+                }
+            }
+
+            switch(args[i].charAt(0)) {
+                case '-':
+                    switch (args[i].charAt(1)) {
+                        case 's': // -s string: to be put as watermark
+                            System.out.println("OPTION B");
+                            break;
+                        case 'o': // -o file: output file
+                            System.out.println("OPTION C");
+                            break;
+                        default:
+                            System.out.println("Unknown argument: \"" + args[i] + "\"");
+                            System.exit(1);
+                            break;
+                    }
+                    break;
+            }
+        }
+
+        // test
+        ImagePlus image = IJ.openImage(f.getAbsolutePath());
+        Font font = new Font("Arial", Font.PLAIN, 18);
+        ImageProcessor ip = image.getProcessor();
+        ip.setColor(Color.WHITE);
+        ip.setFont(font);
+        ip.drawString("Watermark Text", 10, 20);
+        image.updateAndDraw();
+        IJ.save(image, "output.png");
+
+    }
+}