[prev in list] [next in list] [prev in thread] [next in thread] 

List:       fop-dev
Subject:    [jira] [Comment Edited] (FOP-2928) PDFDocumentGraphics2D does not clear content on nextPage()
From:       "Brian Scott (Jira)" <jira () apache ! org>
Date:       2021-08-03 16:34:00
Message-ID: JIRA.13295355.1585687020000.833601.1628008440321 () Atlassian ! JIRA
[Download RAW message or body]


    [ https://issues.apache.org/jira/browse/FOP-2928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17392404#comment-17392404 \
] 

Brian Scott edited comment on FOP-2928 at 8/3/21, 4:33 PM:
-----------------------------------------------------------

This code works with FOP 1.1, but creates duplicated text with FOP 2.5
Page two should only have 1 line of text, but has two. Page 20 has all the text \
printed on previous pages.

{{package test;

import java.awt.geom.AffineTransform;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

import org.apache.fop.pdf.PDFInfo;
import org.apache.fop.svg.PDFDocumentGraphics2D;

public class TestPDF {
	
	static int DPIscale=4;
	static public final int PT=72;
	static public int inch(double p) {
		return (int)(p*PT*DPIscale);
	}

	public static void main(String[] args) {
		try {
			FileOutputStream os=new FileOutputStream("test.pdf");
			
			AffineTransform tx=new AffineTransform();
			PDFDocumentGraphics2D gPDF=new PDFDocumentGraphics2D(false);
			gPDF.setupDocument(os, (int)(inch(11)/DPIscale), (int)(inch(8.5)/DPIscale));
			gPDF.setDeviceDPI(PT);
			gPDF.setupDefaultFontInfo();
			PDFInfo info= gPDF.getPDFDocument().getInfo();
				info.setProducer("from TestPDF");
				info.setCreationDate(new Date(System.currentTimeMillis()));
			gPDF.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
			tx.scale(1.0/DPIscale, 1.0/DPIscale);
			gPDF.setTransform(tx);
			
			for (int i = 0; i < 20; i++) {
				gPDF.drawString("Page "+i, inch(1), inch(1+i*0.2));
				gPDF.nextPage();
			}
			
			gPDF.finish();
			os.close();

		
		
		
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}

}
}}


was (Author: brianorca):
This code works with FOP 1.1, but creates duplicated text with FOP 2.5

{{package test;

import java.awt.geom.AffineTransform;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

import org.apache.fop.pdf.PDFInfo;
import org.apache.fop.svg.PDFDocumentGraphics2D;

public class TestPDF {
	
	static int DPIscale=4;
	static public final int PT=72;
	static public int inch(double p) {
		return (int)(p*PT*DPIscale);
	}

	public static void main(String[] args) {
		try {
			FileOutputStream os=new FileOutputStream("test.pdf");
			
			AffineTransform tx=new AffineTransform();
			PDFDocumentGraphics2D gPDF=new PDFDocumentGraphics2D(false);
			gPDF.setupDocument(os, (int)(inch(11)/DPIscale), (int)(inch(8.5)/DPIscale));
			gPDF.setDeviceDPI(PT);
			gPDF.setupDefaultFontInfo();
			PDFInfo info= gPDF.getPDFDocument().getInfo();
				info.setProducer("from TestPDF");
				info.setCreationDate(new Date(System.currentTimeMillis()));
			gPDF.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext());
			tx.scale(1.0/DPIscale, 1.0/DPIscale);
			gPDF.setTransform(tx);
			
			for (int i = 0; i < 20; i++) {
				gPDF.drawString("Page "+i, inch(1), inch(1+i*0.2));
				gPDF.nextPage();
			}
			
			gPDF.finish();
			os.close();

		
		
		
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}

}
}}

> PDFDocumentGraphics2D does not clear content on nextPage()
> ----------------------------------------------------------
> 
> Key: FOP-2928
> URL: https://issues.apache.org/jira/browse/FOP-2928
> Project: FOP
> Issue Type: Bug
> Components: renderer/pdf
> Affects Versions: 2.2, 2.4
> Reporter: Jürgen Ebert
> Priority: Major
> Labels: easyfix
> 
> When switching to a new page using PDFDocumentGraphics2D#nextPage() the current \
> content is added to the PDF document but it is not cleared. Therefore the same \
> content will be repeated on the next page. nextPage() calls closePage() which adds \
> this.getString() to the PDFStream. this.getString() simply returns the content of \
> currentStream, a StringWriter. The content of currentStream is never cleared and \
> the reference is never set to null. Therefore it will be appended to and it will be \
> added again when the next nextPage() or closePage() or therefore finish() is \
> called. A work-arround is to manually set the value of currentStream to null using \
> reflection.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)


[prev in list] [next in list] [prev in thread] [next in thread]