Started work on modernizing stuff.

pom.xml

@@ -6,11 +6,12 @@
 
     <groupId>nl.andrewlalis</groupId>
     <artifactId>BlockBookBinder</artifactId>
-    <version>1.2.0</version>
+    <version>1.3.0-SNAPSHOT</version>
 
     <properties>
-        <maven.compiler.source>12</maven.compiler.source>
+        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>12</maven.compiler.target>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
     <build>
@@ -46,7 +47,7 @@
         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
-            <version>1.18.14</version>
+            <version>1.18.28</version>
             <scope>provided</scope>
         </dependency>
 
@@ -60,13 +61,13 @@
         <dependency>
             <groupId>com.formdev</groupId>
             <artifactId>flatlaf</artifactId>
-            <version>1.0-rc3</version>
+            <version>3.1.1</version>
         </dependency>
 
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-model</artifactId>
-            <version>3.6.3</version>
+            <version>3.9.3</version>
         </dependency>
     </dependencies>
 </project>

src/main/java/nl/andrewlalis/blockbookbinder/BlockBookBinder.java

@@ -14,7 +14,7 @@ public class BlockBookBinder {
 
 	public static void main(String[] args) {
 		SwingUtilities.invokeLater(() -> {
-			FlatDarkLaf.install();
+			FlatDarkLaf.setup();
 			var mainFrame = new MainFrame();
 			mainFrame.setupAndShow();
 		});

src/main/java/nl/andrewlalis/blockbookbinder/model/build/BookBuilder2.java

@@ -0,0 +1,99 @@
+package nl.andrewlalis.blockbookbinder.model.build;
+
+import nl.andrewlalis.blockbookbinder.model.Book;
+import nl.andrewlalis.blockbookbinder.model.BookPage;
+import nl.andrewlalis.blockbookbinder.model.CharWidthMapper;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class BookBuilder2 {
+    private final int MAX_LINES_PER_PAGE;
+    private final int MAX_CHARS_PER_PAGE;
+    private final int MAX_LINE_PIXEL_WIDTH;
+
+    private List<String> lines;
+
+    private StringBuilder lineBuilder;
+    private StringBuilder wordBuilder;
+    private int currentLine;
+    private int currentLinePixelWidth;
+    private int currentWordPixelWidth;
+
+    public BookBuilder2(int maxLinesPerPage, int maxCharsPerPage, int maxLinePixelWidth) {
+        this.MAX_LINES_PER_PAGE = maxLinesPerPage;
+        this.MAX_CHARS_PER_PAGE = maxCharsPerPage;
+        this.MAX_LINE_PIXEL_WIDTH = maxLinePixelWidth;
+        this.lines = new ArrayList<>();
+        this.lineBuilder = new StringBuilder(64);
+        this.wordBuilder = new StringBuilder(64);
+        this.currentLine = 0;
+        this.currentLinePixelWidth = 0;
+        this.currentWordPixelWidth = 0;
+    }
+
+    public BookBuilder2 addText(String text) {
+        int idx = 0;
+        while (idx < text.length()) {
+            final char c = text.charAt(idx++);
+            if (c == '\n') {
+                appendLine();
+            } else if (c == ' ' && lineBuilder.length() == 0) {
+                continue; // Skip spaces at the start of lines.
+            } else { // Read a continuous word.
+                int charsRead = readWord(text, idx - 1);
+                idx += charsRead - 1;
+            }
+        }
+        return this;
+    }
+
+    public Book build() {
+        Book book = new Book();
+        BookPage page = new BookPage();
+        int currentPageLineCount = 0;
+
+        for (String line : lines) {
+            page.addLine(line);
+            currentPageLineCount++;
+            if (currentPageLineCount == MAX_LINES_PER_PAGE) {
+                book.addPage(page);
+                page = new BookPage();
+                currentPageLineCount = 0;
+            }
+        }
+        if (page.hasContent()) {
+            book.addPage(page);
+        }
+        return book;
+    }
+
+    private int readWord(String text, int firstCharIdx) {
+        currentWordPixelWidth = 0;
+        wordBuilder.setLength(0);
+        int idx = firstCharIdx;
+        while (idx < text.length()) {
+            char c = text.charAt(idx++);
+            if (!Character.isWhitespace(c)) {
+                currentWordPixelWidth += CharWidthMapper.getInstance().getWidth(c) + 1;
+                wordBuilder.append(c);
+
+                // If we notice that our word will cause the current line to exceed max width, go to a newline.
+                if (currentLinePixelWidth + currentWordPixelWidth > MAX_LINE_PIXEL_WIDTH) {
+                    appendLine();
+                }
+            } else {
+                break;
+            }
+        }
+        String word = wordBuilder.toString();
+        return word.length();
+    }
+
+    private void appendLine() {
+        this.lines.add(this.lineBuilder.toString());
+        this.lineBuilder.setLength(0);
+        this.currentLine++;
+        this.currentLinePixelWidth = 0;
+    }
+}