Hi,
<rant>
There seems to be a misconception frequently found in the SVG/PDF
community that because vector graphics can be scaled with no change in
image quality, they are somehow 'independent' of notions of
resolution. Unfortunately, this isn't correct. Any piece of vector
image must be drawn at the same scale as all the others in order to
have the correct relative size in the final image. So we have to know
what that scale is. It would be nice to be able to set that scale so
it matched the resolution of the output device because then we could
place text at a given (absolute) size, such as 24pt knowing that
changing the scale would not change the relative size of the text, but
alas! this is not the case; someone decided that The Scale shall be
1:72, which means that text has to be manually scaled according to the
output resolution.
</rant>
I feel better for that
Martin
On 24 Apr 2009, at 10:32, Vincent Hennebert wrote:
Hi,
Like you noticed the resolution only applies to images. I am slightly
puzzled by the way you compare both outputs: are you putting the sheet
of paper next to the screen and looking for differences?
Then note that the HTML result is likely to be highly different from
one
environment to the other (think of a desktop machine compared to
a smartphone), and it is dependent on many settings: the resolution of
the screen, the default font and font sizes chosen by the user, the
default stylesheet they may want to apply, etc.
Also, PDF is a vectorial format, so the notion of resolution doesn’t
apply to it (except the raster images that it may contain).
So yes, in the end what you want to do is to play with font sizes,
rather on the FO output. For the HTML output better leave them to
their
default values, and let the users choose the default sizes that suit
them.
kkapelon freemail gr wrote:
Hello list!
I have an XML file which is either converted to PDF (via FOP) or to
XHTML (via another XSL stylesheet)
I have noticed however that things look different in (printed) PDF
and (on-screen) HTML formats.
The sizes are different for the text elements.
After searching for a cause it came to my attention that PDF files
from FOP
are rendered at 72DPI (correct me if I am wrong) while the browser/
screen/OS works at 96DPI.
I found the configuration for dpi at http://xmlgraphics.apache.org/fop/0.95/configuration.html
, but this
applies only to images and not text.
So is there a workaround to make things appear on print the same as
they are on screen?
I am thinking of manully changing the sizes in one stylesheet
(either for FO or HTML) to bring it
to the same "size" with the other. But I wonder if there is a more
elegant solution.
Thank you
Hope this clarifies the thing a bit.
Vincent
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