Hello
i solve the problem...
when i replace the image i have to use the following method:
stream.setData(replaceImage.getOriginalData(),false,PRStream.NO_COMPRESSION);
where replaceImage is a instance of the itext image class.
now it works.
with regards
Thomas Kübler
the code:
final PdfImageObject image = new PdfImageObject(stream);
try
{
byte[] replaceImageData = IOUtils.toByteArray(new
FileInputStream("replacecmyk.jpg"));
Image replaceImage =
Image.getInstance(replaceImageData);
stream.clear();
stream.setData(replaceImage.getOriginalData(),false,PRStream.NO_COMPRESSION);
stream.put(PdfName.TYPE, PdfName.XOBJECT);
stream.put(PdfName.SUBTYPE, PdfName.IMAGE);
// only use jpeg files
stream.put(PdfName.FILTER, PdfName.DCTDECODE);
stream.put(PdfName.WIDTH, new
PdfNumber(replaceImage.getWidth()));
stream.put(PdfName.HEIGHT, new
PdfNumber(replaceImage.getHeight()));
stream.put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
switch (replaceImage.getColorspace())
{
case 1:
stream.put(PdfName.COLORSPACE,
PdfName.DEVICEGRAY);
break;
case 3:
stream.put(PdfName.COLORSPACE,
PdfName.DEVICERGB);
break;
default:
stream.put(PdfName.COLORSPACE,
PdfName.DEVICECMYK);
if (replaceImage.isInverted())
{
stream.put(PdfName.DECODE, new
PdfLiteral("[1 0 1 0 1 0 1 0]"));
}
}
}
catch (BadElementException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
Am 26.09.2012 um 14:30 schrieb Thomas Kübler <[email protected]>:
> Hello to itext user,
>
> i have a problem to replace an jpeg image inside an existing pdf document.
>
> First i check if an xobject is inside the pdf document, if i found one i get
> the PRStream from this object.
> Then i create an PdfImageObject read the data and save this to the filesystem
> (this image i can open with photoshop etc.)
> Then i clear the prstream and read the save image to replace (for test i use
> the image saved before, so this is exact the same image),
> i do all necessary settings like before, but the saved PDF document doesn't
> show the image.
>
> I got an error from acrobat "not enough memory" and when i try to open this
> saved image i got an error from photoshop "wrong jpeg mark found".
>
> any idea's?
>
>
>
> here is the code snippet:
>
> stream.clear();
>
> stream.put(PdfName.TYPE, PdfName.XOBJECT);
> stream.put(PdfName.SUBTYPE, PdfName.IMAGE);
> stream.put(PdfName.WIDTH, new PdfNumber(replaceImage.getWidth()));
> stream.put(PdfName.HEIGHT, new PdfNumber(replaceImage.getHeight()));
>
>
> switch (replaceImage.type())
> {
> case Image.JPEG:
>
> switch (replaceImage.getColorspace())
> {
> case 1:
> stream.put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
> break;
> case 3:
> stream.put(PdfName.COLORSPACE, PdfName.DEVICERGB);
> break;
> default:
> stream.put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
>
> if (replaceImage.isInverted())
> {
> stream.put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0
> 1 0]"));
> }
> }
> stream.put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
> stream.put(PdfName.LENGTH, new PdfNumber(image.length));
>
> stream.setData(image);
>
> stream.put(PdfName.FILTER, PdfName.DCTDECODE);
> }
>
> with regards
>
> Thomas Kübler
>
>
>
>
>
>
>
>
>
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> Many questions posted to this list can (and will) be answered with a
> reference to the iText book: http://www.itextpdf.com/book/
> Please check the keywords list before you ask for examples:
> http://itextpdf.com/themes/keywords.php
Mit freundlichen Grüßen
Thomas Kübler
----------------------------------------------------
Dynamic Document Solution variex
Alt-Marienfelde 25
12277 Berlin
t. + 49 30 723 23 183
f. + 49 30 723 23 185
mailto:[email protected]
www.variex.de
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_______________________________________________
iText-questions mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/itext-questions
iText(R) is a registered trademark of 1T3XT BVBA.
Many questions posted to this list can (and will) be answered with a reference
to the iText book: http://www.itextpdf.com/book/
Please check the keywords list before you ask for examples:
http://itextpdf.com/themes/keywords.php
