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POHow do you track the location of PDPageContentStream's text output?
 

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  1. POHow do you track the location of PDPageContentStream's text output?
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    <p>I am using Java to write output to a <code>PDDocument</code>, then appending that document to an existing one before serving it to the client.</p> <p>Most of it is working well. I only have a small problem trying to handle content overflow while writing to that <code>PDDocument</code>. I want to keep track of where text is being inserted into the document so that when the "cursor" so to speak goes past a certain point, I'll create a new page, add it to the document, create a new content stream, and continue as normal.</p> <p>Here is some code that shows what I'd like to do:</p> <pre><code>// big try block PDDocument doc = new PDDocument(); PDPage page = new PDPage(); doc.addPage(page); PDPageContentStream content = new PDPageContentStream(doc, page); int fontSize = 12; content.beginText(); content.setFont(...); content.moveTextPositionByAmount(margin, pageHeight-margin); for ( each element in a collection of values ) { content.moveTextPositionByAmount(0, -fontSize); // only moves down in document // at this point, check if past the end of page, if so add a new page if (content.getTextYPosition(...) &lt; margin) { // wishful thinking, doesn't exist content.endText(); content.close(); page = new PDPage(); doc.addPage(page); content = new PDPageContentStream(doc, page); content.beginText(); content.setFont(...); content.moveTextPositionByAmount(margin, pageHeight-(margin+fontSize)); } content.drawString(...); } content.endText(); content.close(); </code></pre> <p>The important bit is the <code>content.getTextYPosition()</code>. It doesn't actually exist, but I'm sure <code>PDPageContentStream</code> must be keeping track of a similar value. Is there any way to access this value?</p> <p>Thanks.</p>
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    1. USJunseok Lee
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    1. CO*I'm sure PDPageContentStream must be keeping track of a similar value* - it doesn't.
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      1. USmkl
    2. COHow can it not keep track of it somewhere? How would it remember where to continue outputting text?
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      1. POHow do you track the location of PDPageContentStream's text output?
      1. USJunseok Lee
    3. CO`PDPageContentStream` does not need to remember: All it does in this context is write the commands you give into a stream in the PDF. The interpretation of those commands is done by the PDF viewer. Thus, only the PDF viewer needs to keep track of it, not PDFBox.
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      1. USmkl
 

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