Class MultiThreaded

platform/java/example/MultiThreaded.java:69–195

import com.artifex.mupdf.fitz.*;

class MultiThreaded
{
	public static void main(String args[])
	{
		/* Parse arguments. */
		if (args.length < 1)
		{
			System.err.println("usage: MultiThreaded input-file");
			System.err.println("\tinput-file: path of PDF, XPS, CBZ or EPUB document to open");
			return;
		}

		String filename = args[0];

		/* Open the document on the main thread.
		 * You may not reference doc in any other thread.
		 */
		Document doc;
		try {
			doc = Document.openDocument(filename);
		} catch (RuntimeException ex) {
			System.err.println("cannot open document: " + ex.getMessage());
			return;
		}

		/* Count the pages on the main thread. */
		int pageCount;
		try {
			pageCount = doc.countPages();
		} catch (RuntimeException ex) {
			System.err.println("cannot count document pages: " + ex.getMessage());
			return;
		}

		/* Create a thread, an output pixmap and an exception placeholder per page. */
		final Thread[] threads = new Thread[pageCount];
		final Pixmap[] pixmaps = new Pixmap[pageCount];
		final Exception[] exceptions = new Exception[pageCount];

		for (int i = 0; i < pageCount; ++i)
		{
			final int pageNumber = i;
			try {
				/* Load page and convert it to a display list on
				 * the main thread. Note that this cannot be done
				 * in worker threads since doc should only be used
				 * by the main thread.
				 */
				Page page = doc.loadPage(pageNumber);

				/* Determine the bounding box for the page */
				final Rect bounds = page.getBounds();

				/* Convert the page into a display list. The display
				 * list can be used by any other thread as it is not
				 * bound to doc.
				 */
				final DisplayList displayList = page.toDisplayList();