When is PDFImageHandlerGraphics2D used?

[Vincent Hennebert-2]

Hi,

I tried every image format I could think of, none triggers the use of
PDFImageHandlerGraphics2D. AFAIU this is the only image handler that
doesn’t call PDFRenderer.placeImage or renderDocument in return, in
which accessibility is handled. So if that handler is used the generated
PDF will be invalid.

What type of images is that handler used for?

Thanks,
Vincent

[Jeremias Maerki-2]

Hi Vincent

That would be Barcode4J, for example. If the latest code from
Barcode4J's CVS HEAD is used, ImageConverters get registered. One of
those can convert Barcode XML to Graphics2D which should be picked over
the Barcode XML -> SVG implementation in the PDF case. But that will
only be triggered with the new IF. With the renderer, I assume (without
checking) the XMLHandler interface will be used.

On 15.10.2009 17:51:01 Vincent Hennebert wrote:

> Hi,
>
> I tried every image format I could think of, none triggers the use of
> PDFImageHandlerGraphics2D. AFAIU this is the only image handler that
> doesn’t call PDFRenderer.placeImage or renderDocument in return, in
> which accessibility is handled. So if that handler is used the generated
> PDF will be invalid.
>
> What type of images is that handler used for?
>
> Thanks,
> Vincent

Jeremias Maerki

[Jeremias Maerki-2]

And you can use a WMF (Windows Metafile) file. See
org.apache.fop.image.loader.batik.ImageConverterWMF2G2D.java

On 15.10.2009 18:30:46 Jeremias Maerki wrote:

> Hi Vincent
>
> That would be Barcode4J, for example. If the latest code from
> Barcode4J's CVS HEAD is used, ImageConverters get registered. One of
> those can convert Barcode XML to Graphics2D which should be picked over
> the Barcode XML -> SVG implementation in the PDF case. But that will
> only be triggered with the new IF. With the renderer, I assume (without
> checking) the XMLHandler interface will be used.
>
> On 15.10.2009 17:51:01 Vincent Hennebert wrote:
> > Hi,
> >
> > I tried every image format I could think of, none triggers the use of
> > PDFImageHandlerGraphics2D. AFAIU this is the only image handler that
> > doesn’t call PDFRenderer.placeImage or renderDocument in return, in
> > which accessibility is handled. So if that handler is used the generated
> > PDF will be invalid.
> >
> > What type of images is that handler used for?
> >
> > Thanks,
> > Vincent
>
>
>
>
> Jeremias Maerki

Jeremias Maerki

[Vincent Hennebert-2]

Hi Jeremias,

Thanks for the hint. I tried with a WMF image and found out that this
class is used by both the renderer and the painter. I’ve just
implemented accessibility support in it.

Vincent


Jeremias Maerki wrote:

> And you can use a WMF (Windows Metafile) file. See
> org.apache.fop.image.loader.batik.ImageConverterWMF2G2D.java
>
> On 15.10.2009 18:30:46 Jeremias Maerki wrote:
>> Hi Vincent
>>
>> That would be Barcode4J, for example. If the latest code from
>> Barcode4J's CVS HEAD is used, ImageConverters get registered. One of
>> those can convert Barcode XML to Graphics2D which should be picked over
>> the Barcode XML -> SVG implementation in the PDF case. But that will
>> only be triggered with the new IF. With the renderer, I assume (without
>> checking) the XMLHandler interface will be used.
>>
>> On 15.10.2009 17:51:01 Vincent Hennebert wrote:
>>> Hi,
>>>
>>> I tried every image format I could think of, none triggers the use of
>>> PDFImageHandlerGraphics2D. AFAIU this is the only image handler that
>>> doesn’t call PDFRenderer.placeImage or renderDocument in return, in
>>> which accessibility is handled. So if that handler is used the generated
>>> PDF will be invalid.
>>>
>>> What type of images is that handler used for?
>>>
>>> Thanks,
>>> Vincent
>>
>>
>>
>> Jeremias Maerki
>
>
>
>
> Jeremias Maerki
>