updated control access

old code/tray/src/qz/printer/action/pdf/BookBundle.java

@@ -0,0 +1,80 @@
+package qz.printer.action.pdf;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.awt.*;
+import java.awt.print.Book;
+import java.awt.print.PageFormat;
+import java.awt.print.Printable;
+import java.awt.print.PrinterException;
+
+/**
+ * Wrapper of the {@code Book} class as a {@code Printable} type,
+ * since PrinterJob implementations do not seem to handle the {@code Pageable} interface properly.
+ */
+public class BookBundle extends Book {
+
+    private static final Logger log = LogManager.getLogger(BookBundle.class);
+
+    private Printable lastPrint;
+    private int lastStarted;
+
+    public BookBundle() {
+        super();
+    }
+
+    /**
+     * Wrapper of the wrapper class so that PrinterJob implementations will handle it as proper pageable
+     */
+    public Book wrapAndPresent() {
+        Book cover = new Book();
+        for(int i = 0; i < getNumberOfPages(); i++) {
+            cover.append(new PrintingPress(), getPageFormat(i));
+        }
+
+        return cover;
+    }
+
+    public Book wrapAndPresent(int offset, int length) {
+        Book coverSubset = new Book();
+        for(int i = offset; i < offset + length && i < getNumberOfPages(); i++) {
+            coverSubset.append(new PrintingPress(offset), getPageFormat(i));
+        }
+
+        return coverSubset;
+    }
+
+
+    /** Printable wrapper to ensure proper reading of multiple documents across spooling */
+    private class PrintingPress implements Printable {
+        private int pageOffset;
+
+        public PrintingPress() {
+            this(0);
+        }
+
+        public PrintingPress(int offset) {
+            pageOffset = offset;
+        }
+
+        @Override
+        public int print(Graphics g, PageFormat format, int pageIndex) throws PrinterException {
+            pageIndex += pageOffset;
+            log.trace("Requested page {} for printing", pageIndex);
+
+            if (pageIndex < getNumberOfPages()) {
+                Printable printable = getPrintable(pageIndex);
+                if (printable != lastPrint) {
+                    lastPrint = printable;
+                    lastStarted = pageIndex;
+                }
+
+                return printable.print(g, format, pageIndex - lastStarted);
+            }
+
+            return NO_SUCH_PAGE;
+        }
+    }
+
+}