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gnujpdf reformat
This commit is contained in:
Jindra Petřík
@@ -30,23 +30,24 @@ import java.io.OutputStream;
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import java.io.PrintWriter;
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import java.io.Serializable;
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/**
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* <p>This class extends awt's PrintJob, to provide a simple method of writing
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* PDF documents.</p>
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* <p>
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* This class extends awt's PrintJob, to provide a simple method of writing PDF
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* documents.</p>
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*
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* <p>You can use this with any code that uses Java's printing mechanism. It
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* does include a few extra methods to provide access to some of PDF's features
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* like annotations, or outlines.</p>
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* <p>
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* You can use this with any code that uses Java's printing mechanism. It does
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* include a few extra methods to provide access to some of PDF's features like
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* annotations, or outlines.</p>
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*
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*
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* @author Peter T Mount, http://www.retep.org.uk/pdf/
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* @author Eric Z. Beard, ericzbeard@hotmail.com
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* @version $Revision: 1.3 $, $Date: 2007/08/26 18:56:35 $
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*/
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public class PDFJob extends PrintJob implements Serializable
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{
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/*
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public class PDFJob extends PrintJob implements Serializable {
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/*
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* NOTE: The original class is the work of Peter T. Mount, who released it
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* in the uk.org.retep.pdf package. It was modified by Eric Z. Beard as
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* follows:
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@@ -58,348 +59,346 @@ public class PDFJob extends PrintJob implements Serializable
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* Instances of PDFJob come directly from constructors, not
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* static methods in PDFDocument (which used to be PDF)
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* It is still licensed under the LGPL.
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*/
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/**
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* This is the OutputStream the PDF file will be written to when complete
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* Note: This is transient, as it's not valid after being Serialized.
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*/
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protected transient OutputStream os;
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/**
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* This is the PDF file being constructed
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*/
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protected PDFDocument pdfDocument;
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/**
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* This is the current page being constructed by the last getGraphics()
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* call
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*/
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protected PDFPage page;
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/**
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* This is the page number of the current page
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*/
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protected int pagenum;
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// Constructors
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/**
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* <p>This constructs the job. This method must be used when creating a
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* template pdf file, ie one that is Serialised by one application, and
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* then restored by another.</p>
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*
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* <p>ezb 20011115 - Haven't done anything with templates yet, don't know
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* how/if they are implemented</p>
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*/
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public PDFJob() {
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this(null);
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}
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/**
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* <p>This constructs the job. This is the primary constructor that
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* will be used for creating pdf documents with this package. The
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* specified output stream is a handle to the .pdf file you wish to
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* create.</p>
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*
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* @param os - <code>OutputStream</code> to use for the pdf output
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*/
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public PDFJob(OutputStream os) {
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this(os, "PDF Doc");
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}
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/**
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* <p>This constructs the job. This is the primary constructor that
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* will be used for creating pdf documents with this package. The
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* specified output stream is a handle to the .pdf file you wish to
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* create.</p>
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*
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* <p>Use this constructor if you want to give the pdf document a name
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* other than the default of "PDF Doc"</p>
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*
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* @param os - <code>OutputStream</code> to use for the pdf output
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* @param title a <code>String</code> value
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*/
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public PDFJob(OutputStream os, String title) {
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this.os = os;
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this.pdfDocument = new PDFDocument();
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pagenum = 0;
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pdfDocument.getPDFInfo().setTitle(title);
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}
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/**
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* <p>This returns a graphics object that can be used to draw on a page.
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* In PDF, this will be a new page within the document.</p>
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*
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* @param orient - the <code>int</code> Orientation of the new page,
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* as defined in <code>PDFPage</code>
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* @return Graphics object to draw.
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* @see PageFormat#PORTRAIT
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* @see PageFormat#LANDSCAPE
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* @see PageFormat#REVERSE_LANDSCAPE
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*/
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public Graphics getGraphics(int orient) {
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// create a new page
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page = new PDFPage(orient);
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pdfDocument.add(page);
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pagenum++;
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// Now create a Graphics object to draw onto the page
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return new graphic(page,this);
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}
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/**
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* <p>This returns a graphics object that can be used to draw on a page.
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* In PDF, this will be a new page within the document.</p>
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*
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* @param pageFormat PageFormat describing the page size
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* @return Graphics object to draw.
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*/
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public Graphics getGraphics(PageFormat pageFormat) {
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// create a new page
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page = new PDFPage(pageFormat);
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pdfDocument.add(page);
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pagenum++;
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// Now create a Graphics object to draw onto the page
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return new graphic(page,this);
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}
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/**
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* <p>This writes the PDF document to the OutputStream, finishing the
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* document.</p>
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*/
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public void end() {
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try {
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pdfDocument.write(os);
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} catch(IOException ioe) {
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// Ideally we should throw this. However, PrintJob doesn't throw
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// anything, so we will print the Stack Trace instead.
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ioe.printStackTrace();
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} finally {
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try {
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if (os != null) {
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os.close();
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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// This should mark us as dead
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os = null;
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pdfDocument = null;
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}
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/**
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* <p>This returns a graphics object that can be used to draw on a page.
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* In PDF, this will be a new page within the document.</p>
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*
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* <p>This new page will by default be oriented as a portrait</p>
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*
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* @return a <code>Graphics</code> object to draw to.
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*/
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public Graphics getGraphics() {
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return getGraphics(PageFormat.PORTRAIT);
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}
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/**
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* <p>Returns the page dimension</p>
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*
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* @return a <code>Dimension</code> instance, the size of the page
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*/
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public Dimension getPageDimension() {
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if (page == null) {
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System.err.println("PDFJob.getPageDimension(), page is null");
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}
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return page.getDimension();
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}
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/**
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* <p>How about a setPageDimension(Rectangle media) ?? </p>
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*/
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/**
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* This returns the page resolution.
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*
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* <p>This is the PDF (and Postscript) device resolution of 72 dpi
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* (equivalent to 1 point).</p>
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*
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* @return an <code>int</code>, the resolution in pixels per inch
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*/
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public int getPageResolution() {
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return 72;
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}
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/**
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* <p>In AWT's PrintJob, this would return true if the user requested that the
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* file is printed in reverse order. For PDF's this is not applicable, so
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* it will always return false.</p>
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*
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* @return false
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*/
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public boolean lastPageFirst() {
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return false;
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}
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//======== END OF PrintJob extension ==========
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/**
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* Returns the PDFDocument object for this document.
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* Useful for gaining access to
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* the internals of PDFDocument.
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* @return the PDF object
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*/
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public PDFDocument getPDFDocument() {
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return pdfDocument;
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}
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/**
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* <p>Returns the current PDFPage being worked on. Useful for working on
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* Annotations (like links), etc.</p>
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*
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* @return the <code>PDFPage</code> currently being constructed
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*/
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public PDFPage getCurrentPage() {
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return page;
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}
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/**
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* <p>Returns the current page number.
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* Useful if you need to include one in the document</p>
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*
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* @return the <code>int</code> current page number
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*/
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public int getCurrentPageNumber() {
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return pagenum;
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}
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/**
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* <p>This method attaches an outline to the current page being generated.
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* When selected, the outline displays the top of the page.</p>
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*
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* @param title a <code>String</code>, the title of the Outline
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* @return a <code>PDFOutline</code> object that was created,
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* for adding sub-outline's if required.
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*/
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public PDFOutline addOutline(String title) {
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return page.addOutline(title);
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}
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/**
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* <p>This method attaches an outline to the current page being generated.
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* When selected, the outline displays the specified region.</p>
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*
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* @param title Outline title to attach
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* @param x Left coordinate of region
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* @param y Top coordinate of region
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* @param w width of region
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* @param h height of region
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* @return the <code>PDFOutline</code> object created,
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* for adding sub-outline's if required.
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*/
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public PDFOutline addOutline(String title,int x,int y,int w,int h) {
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return page.addOutline(title,x,y,w,h);
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}
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/**
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* Convenience method: Adds a text note to the document.
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* @param note Text of the note
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* @param x Coordinate of note
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* @param y Coordinate of note
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* @param w Width of the note
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* @param h Height of the note
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* @return Returns the annotation, so other settings can be changed.
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*/
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public PDFAnnot addNote(String note,int x,int y,int w,int h) {
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return page.addNote(note,x,y,w,h);
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}
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/**
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* <p>This inner class extends PDFGraphics for the PrintJob.</p>
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*
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* <p>Like with java.awt, Graphics instances created with PrintJob implement
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* the PrintGraphics interface. Here we implement that method, and overide
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* PDFGraphics.create() method, so all instances have this interface.</p>
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*/
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class graphic extends PDFGraphics implements PrintGraphics {
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/**
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* The PDFJob we are linked with
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*/
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private PDFJob job;
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/**
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* @param page to attach to
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* @param job PDFJob containing this graphic
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* This is the OutputStream the PDF file will be written to when complete
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* Note: This is transient, as it's not valid after being Serialized.
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*/
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graphic(PDFPage page,PDFJob job) {
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super();
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this.init(page);
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this.job = job;
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}
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protected transient OutputStream os;
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/**
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* This is used by our version of create()
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* This is the PDF file being constructed
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*/
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graphic(PDFPage page, PDFJob job, RawPrintWriter pw) {
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super();
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this.init(page,pw);
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this.job = job;
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}
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protected PDFDocument pdfDocument;
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/**
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* This returns a child instance of this Graphics object. As with AWT,
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* the affects of using the parent instance while the child exists,
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* is not determined.
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* This is the current page being constructed by the last getGraphics() call
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*/
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protected PDFPage page;
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/**
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* This is the page number of the current page
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*/
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protected int pagenum;
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// Constructors
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/**
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* <p>
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* This constructs the job. This method must be used when creating a
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* template pdf file, ie one that is Serialised by one application, and then
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* restored by another.</p>
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*
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* <p>This method is used to make a new Graphics object without
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* going to a new page</p>
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*
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* <p>Once complete, the child should be released with it's dispose()
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* method which will restore the graphics state to it's parent.
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*
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* @return Graphics object
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* <p>
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* ezb 20011115 - Haven't done anything with templates yet, don't know
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* how/if they are implemented</p>
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*/
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public Graphics create() {
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closeBlock();
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graphic g = new graphic(getPage(),job,getWriter());
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// The new instance inherits a few items
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g.clipRectangle = new Rectangle(clipRectangle);
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return (Graphics) g;
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public PDFJob() {
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this(null);
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}
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/**
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* This is the PrintGraphics interface
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* @return PrintJob for this object
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* <p>
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* This constructs the job. This is the primary constructor that will be
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* used for creating pdf documents with this package. The specified output
|
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* stream is a handle to the .pdf file you wish to create.</p>
|
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*
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* @param os - <code>OutputStream</code> to use for the pdf output
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*/
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public PrintJob getPrintJob() {
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return (PrintJob)job;
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public PDFJob(OutputStream os) {
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this(os, "PDF Doc");
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}
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} // end inner class graphic
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/**
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* <p>
|
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* This constructs the job. This is the primary constructor that will be
|
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* used for creating pdf documents with this package. The specified output
|
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* stream is a handle to the .pdf file you wish to create.</p>
|
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*
|
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* <p>
|
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* Use this constructor if you want to give the pdf document a name other
|
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* than the default of "PDF Doc"</p>
|
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*
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* @param os - <code>OutputStream</code> to use for the pdf output
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* @param title a <code>String</code> value
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*/
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public PDFJob(OutputStream os, String title) {
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this.os = os;
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this.pdfDocument = new PDFDocument();
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pagenum = 0;
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pdfDocument.getPDFInfo().setTitle(title);
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}
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/**
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* <p>
|
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* This returns a graphics object that can be used to draw on a page. In
|
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* PDF, this will be a new page within the document.</p>
|
||||
*
|
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* @param orient - the <code>int</code> Orientation of the new page, as
|
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* defined in <code>PDFPage</code>
|
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* @return Graphics object to draw.
|
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* @see PageFormat#PORTRAIT
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* @see PageFormat#LANDSCAPE
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* @see PageFormat#REVERSE_LANDSCAPE
|
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*/
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public Graphics getGraphics(int orient) {
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// create a new page
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page = new PDFPage(orient);
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pdfDocument.add(page);
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pagenum++;
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||||
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// Now create a Graphics object to draw onto the page
|
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return new graphic(page, this);
|
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}
|
||||
|
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/**
|
||||
* <p>
|
||||
* This returns a graphics object that can be used to draw on a page. In
|
||||
* PDF, this will be a new page within the document.</p>
|
||||
*
|
||||
* @param pageFormat PageFormat describing the page size
|
||||
* @return Graphics object to draw.
|
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*/
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public Graphics getGraphics(PageFormat pageFormat) {
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// create a new page
|
||||
page = new PDFPage(pageFormat);
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pdfDocument.add(page);
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pagenum++;
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||||
|
||||
// Now create a Graphics object to draw onto the page
|
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return new graphic(page, this);
|
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}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* This writes the PDF document to the OutputStream, finishing the
|
||||
* document.</p>
|
||||
*/
|
||||
public void end() {
|
||||
try {
|
||||
pdfDocument.write(os);
|
||||
} catch (IOException ioe) {
|
||||
// Ideally we should throw this. However, PrintJob doesn't throw
|
||||
// anything, so we will print the Stack Trace instead.
|
||||
ioe.printStackTrace();
|
||||
} finally {
|
||||
try {
|
||||
if (os != null) {
|
||||
os.close();
|
||||
}
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
// This should mark us as dead
|
||||
os = null;
|
||||
pdfDocument = null;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* This returns a graphics object that can be used to draw on a page. In
|
||||
* PDF, this will be a new page within the document.</p>
|
||||
*
|
||||
* <p>
|
||||
* This new page will by default be oriented as a portrait</p>
|
||||
*
|
||||
* @return a <code>Graphics</code> object to draw to.
|
||||
*/
|
||||
public Graphics getGraphics() {
|
||||
return getGraphics(PageFormat.PORTRAIT);
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* Returns the page dimension</p>
|
||||
*
|
||||
* @return a <code>Dimension</code> instance, the size of the page
|
||||
*/
|
||||
public Dimension getPageDimension() {
|
||||
if (page == null) {
|
||||
System.err.println("PDFJob.getPageDimension(), page is null");
|
||||
}
|
||||
return page.getDimension();
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* How about a setPageDimension(Rectangle media) ?? </p>
|
||||
*/
|
||||
/**
|
||||
* This returns the page resolution.
|
||||
*
|
||||
* <p>
|
||||
* This is the PDF (and Postscript) device resolution of 72 dpi (equivalent
|
||||
* to 1 point).</p>
|
||||
*
|
||||
* @return an <code>int</code>, the resolution in pixels per inch
|
||||
*/
|
||||
public int getPageResolution() {
|
||||
return 72;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* In AWT's PrintJob, this would return true if the user requested that the
|
||||
* file is printed in reverse order. For PDF's this is not applicable, so it
|
||||
* will always return false.</p>
|
||||
*
|
||||
* @return false
|
||||
*/
|
||||
public boolean lastPageFirst() {
|
||||
return false;
|
||||
}
|
||||
|
||||
//======== END OF PrintJob extension ==========
|
||||
/**
|
||||
* Returns the PDFDocument object for this document. Useful for gaining
|
||||
* access to the internals of PDFDocument.
|
||||
*
|
||||
* @return the PDF object
|
||||
*/
|
||||
public PDFDocument getPDFDocument() {
|
||||
return pdfDocument;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* Returns the current PDFPage being worked on. Useful for working on
|
||||
* Annotations (like links), etc.</p>
|
||||
*
|
||||
* @return the <code>PDFPage</code> currently being constructed
|
||||
*/
|
||||
public PDFPage getCurrentPage() {
|
||||
return page;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* Returns the current page number. Useful if you need to include one in the
|
||||
* document</p>
|
||||
*
|
||||
* @return the <code>int</code> current page number
|
||||
*/
|
||||
public int getCurrentPageNumber() {
|
||||
return pagenum;
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* This method attaches an outline to the current page being generated. When
|
||||
* selected, the outline displays the top of the page.</p>
|
||||
*
|
||||
* @param title a <code>String</code>, the title of the Outline
|
||||
* @return a <code>PDFOutline</code> object that was created, for adding
|
||||
* sub-outline's if required.
|
||||
*/
|
||||
public PDFOutline addOutline(String title) {
|
||||
return page.addOutline(title);
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* This method attaches an outline to the current page being generated. When
|
||||
* selected, the outline displays the specified region.</p>
|
||||
*
|
||||
* @param title Outline title to attach
|
||||
* @param x Left coordinate of region
|
||||
* @param y Top coordinate of region
|
||||
* @param w width of region
|
||||
* @param h height of region
|
||||
* @return the <code>PDFOutline</code> object created, for adding
|
||||
* sub-outline's if required.
|
||||
*/
|
||||
public PDFOutline addOutline(String title, int x, int y, int w, int h) {
|
||||
return page.addOutline(title, x, y, w, h);
|
||||
}
|
||||
|
||||
/**
|
||||
* Convenience method: Adds a text note to the document.
|
||||
*
|
||||
* @param note Text of the note
|
||||
* @param x Coordinate of note
|
||||
* @param y Coordinate of note
|
||||
* @param w Width of the note
|
||||
* @param h Height of the note
|
||||
* @return Returns the annotation, so other settings can be changed.
|
||||
*/
|
||||
public PDFAnnot addNote(String note, int x, int y, int w, int h) {
|
||||
return page.addNote(note, x, y, w, h);
|
||||
}
|
||||
|
||||
/**
|
||||
* <p>
|
||||
* This inner class extends PDFGraphics for the PrintJob.</p>
|
||||
*
|
||||
* <p>
|
||||
* Like with java.awt, Graphics instances created with PrintJob implement
|
||||
* the PrintGraphics interface. Here we implement that method, and overide
|
||||
* PDFGraphics.create() method, so all instances have this interface.</p>
|
||||
*/
|
||||
class graphic extends PDFGraphics implements PrintGraphics {
|
||||
|
||||
/**
|
||||
* The PDFJob we are linked with
|
||||
*/
|
||||
private PDFJob job;
|
||||
|
||||
/**
|
||||
* @param page to attach to
|
||||
* @param job PDFJob containing this graphic
|
||||
*/
|
||||
graphic(PDFPage page, PDFJob job) {
|
||||
super();
|
||||
this.init(page);
|
||||
this.job = job;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is used by our version of create()
|
||||
*/
|
||||
graphic(PDFPage page, PDFJob job, RawPrintWriter pw) {
|
||||
super();
|
||||
this.init(page, pw);
|
||||
this.job = job;
|
||||
}
|
||||
|
||||
/**
|
||||
* This returns a child instance of this Graphics object. As with AWT,
|
||||
* the affects of using the parent instance while the child exists, is
|
||||
* not determined.
|
||||
*
|
||||
* <p>
|
||||
* This method is used to make a new Graphics object without going to a
|
||||
* new page</p>
|
||||
*
|
||||
* <p>
|
||||
* Once complete, the child should be released with it's dispose()
|
||||
* method which will restore the graphics state to it's parent.
|
||||
*
|
||||
* @return Graphics object
|
||||
*/
|
||||
public Graphics create() {
|
||||
closeBlock();
|
||||
graphic g = new graphic(getPage(), job, getWriter());
|
||||
|
||||
// The new instance inherits a few items
|
||||
g.clipRectangle = new Rectangle(clipRectangle);
|
||||
|
||||
return (Graphics) g;
|
||||
}
|
||||
|
||||
/**
|
||||
* This is the PrintGraphics interface
|
||||
*
|
||||
* @return PrintJob for this object
|
||||
*/
|
||||
public PrintJob getPrintJob() {
|
||||
return (PrintJob) job;
|
||||
}
|
||||
|
||||
} // end inner class graphic
|
||||
|
||||
} // end class PDFJob
|
||||
|
||||
|
||||
Reference in New Issue
Block a user