/* $Id: clone_page_boxes.java,v 1.3 2008/04/22 19:13:52 tm Exp $ * Clone page boxes: * Import a PDF page, and clone all of its ArtBox, TrimBox, BleedBox, CropBox, * and MediaBox entries. * * Import a PDF page and read the respective *Box entries with pCOS. Start the * output page and replicate the *Box entries by using the corresponding *box * options of begin_page_ext(). Then, place the imported page in the lower left * corner of the CropBox if present, and the MediaBox otherwise. * * Note: You can visualize the page boxes in Acrobat 8 as follows: * Choose "Edit, Preferences, General, Page Display, Page Content and * Information" and select "Show art, trim & bleed boxes". * This setting will create colorized rectangles which indicate the size of the * art, trim, and bleed boxes. * * Required software: PDFlib+PDI/PPS 7 * Required data: PDF document */ package com.pdflib.cookbook.pdflib.pdf_import; import com.pdflib.pdflib; import com.pdflib.PDFlibException; public class clone_page_boxes { public static void main (String argv[]) { /* This is where the data files are. Adjust as necessary. */ String searchpath = "../input"; String outfile = "clone_page_boxes.pdf"; String title = "Clone Page Boxes"; pdflib p = null; String pdffile = "pageboxes.pdf"; String optlist; int indoc, pageno, endpage, page; boolean have_cropbox = false; double[] artbox, bleedbox, cropbox, mediabox, trimbox; artbox = new double[4]; bleedbox = new double[4]; cropbox = new double[4]; mediabox = new double[4]; trimbox = new double[4]; try { p = new pdflib(); p.set_parameter("SearchPath", searchpath); /* This means we must check return values of load_font() etc. */ p.set_parameter("errorpolicy", "return"); if (p.begin_document(outfile, "") == -1) throw new Exception("Error: " + p.get_errmsg()); p.set_info("Creator", "PDFlib Cookbook"); p.set_info("Title", title + " $Revision: 1.3 $"); /* Open the input PDF */ indoc = p.open_pdi_document(pdffile, ""); if (indoc == -1) throw new Exception("Error: " + p.get_errmsg()); endpage = (int) p.pcos_get_number(indoc, "length:pages"); /* Loop over all pages of the input document */ for (pageno = 1; pageno <= endpage; pageno++) { /* The "pdiusebox" option can be used to specify the box dimensions * to be used for determining the imported page’s size. By default, * the dimensions of the CropBox will be used if present and the * MediaBox otherwise. */ page = p.open_pdi_page(indoc, pageno, ""); if (page == -1) throw new Exception("Error: " + p.get_errmsg()); /* -------------------------------------------------------------- * Retrieve the *Box coordinates from the input page and use them * to assemble the option list for starting the output page * -------------------------------------------------------------- */ optlist = ""; have_cropbox = false; /* If the ArtBox is present on the page retrieve its four * coordinates and add them to the option list */ if (!p.pcos_get_string(indoc, "type:pages[" + (pageno-1) + "]/ArtBox").equals("null")) { optlist = optlist + "artbox={"; for (int i = 0; i < 4; i++) { artbox[i] = p.pcos_get_number(indoc, "pages[" + (pageno-1) + "]/ArtBox[" + i + "]"); optlist = optlist + artbox[i] + " "; } optlist = optlist + "} "; } /* If the BleedBox is present on the page retrieve its four * coordinates and add them to the option list */ if (!p.pcos_get_string(indoc, "type:pages[" + (pageno-1) + "]/BleedBox").equals("null")) { optlist = optlist + "bleedbox={"; for (int i = 0; i < 4; i++) { bleedbox[i] = p.pcos_get_number(indoc, "pages[" + (pageno-1) + "]/BleedBox[" + i + "]"); optlist = optlist + bleedbox[i] + " "; } optlist = optlist + "} "; } /* If the CropBox is present on the page retrieve its four * coordinates and add them to the option list */ if (!p.pcos_get_string(indoc, "type:pages[" + (pageno-1) + "]/CropBox").equals("null")) { optlist = optlist + "cropbox={"; for (int i = 0; i < 4; i++) { cropbox[i] = p.pcos_get_number(indoc, "pages[" + (pageno-1) + "]/CropBox[" + i + "]"); optlist = optlist + cropbox[i] + " "; } optlist = optlist + "} "; have_cropbox = true; } /* Retrieve the coordinates of the MediaBox and add them to the * option list. Since the MediaBox is always present on the page no * check is needed. */ optlist = optlist + "mediabox={"; for (int i = 0; i < 4; i++) { mediabox[i] = p.pcos_get_number(indoc, "pages[" + (pageno-1) + "]/MediaBox[" + i + "]"); optlist = optlist + mediabox[i] + " "; } optlist = optlist + "} "; /* If the TrimBox is present on the page retrieve its four * coordinates and add them to the option list */ if (!p.pcos_get_string(indoc, "type:pages[" + (pageno-1) + "]/TrimBox").equals("null")) { optlist = optlist + "trimbox={"; for (int i = 0; i < 4; i++) { trimbox[i] = p.pcos_get_number(indoc, "pages[" + (pageno-1) + "]/TrimBox[" + i + "]"); optlist = optlist + trimbox[i] + " "; } optlist = optlist + "} "; } /* ---------------------------------------------------------------- * Start and place the page. Zero width and height will be * overridden by the "mediabox" option. * PDFlib places the imported page at (0, 0) of the "visible" page, * which is determined by the CropBox if present, and the MediaBox * otherwise. The imported page must therefore be placed in the * lower left corner of the relevant box. * ---------------------------------------------------------------- */ p.begin_page_ext(0, 0, optlist); if (have_cropbox) p.fit_pdi_page(page, cropbox[0], cropbox[1], ""); else p.fit_pdi_page(page, mediabox[0], mediabox[1], ""); p.end_page_ext(""); p.close_pdi_page(page); } p.end_document(""); } catch (PDFlibException e) { System.err.print("PDFlib exception occurred:\n"); System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() + ": " + e.get_errmsg() + "\n"); } catch (Exception e) { System.err.println(e.getMessage()); } finally { if (p != null) { p.delete(); } } } }