diff options
Diffstat (limited to 'src/main/java/com/lowagie/tools/plugins/NUp.java')
| -rw-r--r-- | src/main/java/com/lowagie/tools/plugins/NUp.java | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/tools/plugins/NUp.java b/src/main/java/com/lowagie/tools/plugins/NUp.java new file mode 100644 index 0000000..7376213 --- /dev/null +++ b/src/main/java/com/lowagie/tools/plugins/NUp.java @@ -0,0 +1,165 @@ +/*
+ * $Id: NUp.java,v 1.6 2005/11/29 21:05:02 blowagie Exp $
+ * $Name: $
+ *
+ * This code is free software. It may only be copied or modified
+ * if you include the following copyright notice:
+ *
+ * This class by Mark Thompson. Copyright (c) 2002 Mark Thompson.
+ *
+ * This code is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * itext-questions@list.sourceforge.net
+ */
+package com.lowagie.tools.plugins;
+
+import java.io.File;
+import java.io.FileOutputStream;
+
+import javax.swing.JInternalFrame;
+
+import com.lowagie.text.Document;
+import com.lowagie.text.Rectangle;
+import com.lowagie.text.pdf.PdfContentByte;
+import com.lowagie.text.pdf.PdfImportedPage;
+import com.lowagie.text.pdf.PdfReader;
+import com.lowagie.text.pdf.PdfWriter;
+import com.lowagie.tools.arguments.FileArgument;
+import com.lowagie.tools.arguments.OptionArgument;
+import com.lowagie.tools.arguments.PdfFilter;
+import com.lowagie.tools.arguments.ToolArgument;
+
+/**
+ * This tool lets you generate a PDF that shows N pages on 1.
+ */
+public class NUp extends AbstractTool {
+
+ static {
+ addVersion("$Id: NUp.java,v 1.6 2005/11/29 21:05:02 blowagie Exp $");
+ }
+
+ /**
+ * Constructs an NUp object.
+ */
+ public NUp() {
+ menuoptions = MENU_EXECUTE | MENU_EXECUTE_SHOW;
+ arguments.add(new FileArgument(this, "srcfile", "The file you want to N-up", false, new PdfFilter()));
+ arguments.add(new FileArgument(this, "destfile", "The resulting PDF", true, new PdfFilter()));
+ OptionArgument oa = new OptionArgument(this, "pow2", "The number of pages you want to copy to 1 page");
+ oa.addOption("2", "1");
+ oa.addOption("4", "2");
+ oa.addOption("8", "3");
+ oa.addOption("16", "4");
+ oa.addOption("32", "5");
+ oa.addOption("64", "6");
+ arguments.add(oa);
+ }
+
+ /**
+ * @see com.lowagie.tools.plugins.AbstractTool#createFrame()
+ */
+ protected void createFrame() {
+ internalFrame = new JInternalFrame("N-up", true, false, true);
+ internalFrame.setSize(300, 80);
+ internalFrame.setJMenuBar(getMenubar());
+ System.out.println("=== N-up OPENED ===");
+ }
+
+ /**
+ * @see com.lowagie.tools.plugins.AbstractTool#execute()
+ */
+ public void execute() {
+ try {
+ if (getValue("srcfile") == null) throw new InstantiationException("You need to choose a sourcefile");
+ File src = (File)getValue("srcfile");
+ if (getValue("destfile") == null) throw new InstantiationException("You need to choose a destination file");
+ File dest = (File)getValue("destfile");
+ int pow2;
+ try {
+ pow2 = Integer.parseInt((String) getValue("pow2"));
+ }
+ catch(Exception e) {
+ pow2 = 1;
+ }
+ // we create a reader for a certain document
+ PdfReader reader = new PdfReader(src.getAbsolutePath());
+ // we retrieve the total number of pages and the page size
+ int total = reader.getNumberOfPages();
+ System.out.println("There are " + total + " pages in the original file.");
+ Rectangle pageSize = reader.getPageSize(1);
+ Rectangle newSize = (pow2 % 2) == 0 ? new Rectangle(pageSize.width(), pageSize.height()) : new Rectangle(pageSize.height(), pageSize.width());
+ Rectangle unitSize = new Rectangle(pageSize.width(), pageSize.height());
+ Rectangle currentSize;
+ for (int i = 0; i < pow2; i++) {
+ unitSize = new Rectangle(unitSize.height() / 2, unitSize.width());
+ }
+ int n = (int)Math.pow(2, pow2);
+ int r = (int)Math.pow(2, (int)pow2 / 2);
+ int c = n / r;
+ // step 1: creation of a document-object
+ Document document = new Document(newSize, 0, 0, 0, 0);
+ // step 2: we create a writer that listens to the document
+ PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));
+ // step 3: we open the document
+ document.open();
+ // step 4: adding the content
+ PdfContentByte cb = writer.getDirectContent();
+ PdfImportedPage page;
+ float offsetX, offsetY, factor;
+ int p;
+ for (int i = 0; i < total; i++) {
+ if (i % n == 0) {
+ document.newPage();
+ }
+ p = i + 1;
+ offsetX = unitSize.width() * ((i % n) % c);
+ offsetY = newSize.height() - (unitSize.height() * (((i % n) / c) + 1));
+ currentSize = reader.getPageSize(p);
+ factor = Math.min(unitSize.width() / currentSize.width(), unitSize.height() / currentSize.height());
+ offsetX += (unitSize.width() - (currentSize.width() * factor)) / 2f;
+ offsetY += (unitSize.height() - (currentSize.height() * factor)) / 2f;
+ page = writer.getImportedPage(reader, p);
+ cb.addTemplate(page, factor, 0, 0, factor, offsetX, offsetY);
+ }
+ // step 5: we close the document
+ document.close();
+ }
+ catch(Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+ /**
+ * @see com.lowagie.tools.plugins.AbstractTool#valueHasChanged(com.lowagie.tools.arguments.ToolArgument)
+ */
+ public void valueHasChanged(ToolArgument arg) {
+ if (internalFrame == null) {
+ // if the internal frame is null, the tool was called from the commandline
+ return;
+ }
+ // represent the changes of the argument in the internal frame
+ }
+
+
+ /**
+ * Generates an NUp version of an existing PDF file.
+ * @param args
+ */
+ public static void main(String[] args) {
+ NUp tool = new NUp();
+ if (args.length < 2) {
+ System.err.println(tool.getUsage());
+ }
+ tool.setArguments(args);
+ tool.execute();
+ }
+
+ /**
+ * @see com.lowagie.tools.plugins.AbstractTool#getDestPathPDF()
+ */
+ protected File getDestPathPDF() throws InstantiationException {
+ return (File)getValue("destfile");
+ }
+}
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