[
https://issues.apache.org/jira/browse/PDFBOX-3405?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Christopher Clark updated PDFBOX-3405:
--------------------------------------
Attachment: bad-font-2.pdf
Sorry, that example works correctly in 2.0.2. Another example is attached. For
me, printTextLocation returns:
{code:java}
public class TextStripperTest extends PDFTextStripper {
@Override
protected void writeString(String string, java.util.List<TextPosition>
textPositions) throws IOException {
for (TextPosition text : textPositions) {
System.out.println(text.getUnicode() + " fs=" +
text.getFontSizeInPt());
}
}
}
// An excerpt from text in the second page:
fs=50.0
I fs=50.0
n fs=50.0
t fs=50.0
e fs=50.0
r fs=50.0
n fs=50.0
a fs=50.0
t fs=50.0
i fs=50.0
o fs=50.0
n fs=50.0
a fs=50.0
l fs=50.0
fs=50.0
D fs=50.0
a fs=50.0
t fs=50.0
a fs=50.0
fs=50.0
P fs=50.0
r fs=50.0
i fs=50.0
v fs=50.0
a fs=50.0
c fs=50.0
y fs=50.0
{code}
Where 50 is clearly the wrong font size.
> Display font size
> -----------------
>
> Key: PDFBOX-3405
> URL: https://issues.apache.org/jira/browse/PDFBOX-3405
> Project: PDFBox
> Issue Type: Improvement
> Reporter: Christopher Clark
> Attachments: bad-font-2.pdf, bad-font-p1.pdf
>
>
> I (along with others) have found using the font size of text to be very
> useful when doing things like trying to recover the structure of PDFs. For
> example, in heuristics like 'text with large font sizes are probably titles'.
> However, I noticed a few cases where {{getFontSizeInPt}} or {{getFontSize}}
> return seemingly very inaccurate results. For example, in the attached pdf
> the {{getFontSizeInPt}} for the title text is over 500.
> After digging into this a little, as I understand it neither of these methods
> return the a font size scaled to the display space. {{getFontSize}} returns
> the "raw" encoded font size and {{getFontSizeInPt}} returns the font size
> scaled by the text matrix, but not by the current transformation matrix.
> Basically, in order to get reliable font information, it would be helpful if
> either
> 1) {{getFontSizeInPt}} includes the effect of using the current
> transformation matrix
> 2) A new method like {{getDisplayFontSize}} is added that returns the font
> size scaled to the display space
> As a side note, I have seen several users (including myself), assume that
> {{getFontSize}} returns the font size as would be observed when one opens the
> PDF, and the been confused when these method occasionally do not return the
> results expected. I think {{getFontSize}} would benefit from a clear note
> that the results might not include scaling factors that were used when the
> text was rendered.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
