Hi,
I suspect that the cause is a programming problem, your comments mention
separation of words but I see this:
BT
/F2 12 Tf
112 652 Td
(q) Tj
ET
BT
/F2 12 Tf
118 652 Td
(u) Tj
ET
BT
/F2 12 Tf
121 652 Td
(i) Tj
ET
BT
/F2 12 Tf
126 652 Td
(c) Tj
ET
BT
/F2 12 Tf
131 652 Td
(k) Tj
ET
I do also suspect that you are calculating the offset based on what you
are intending to write, but you need to do this based on what you just
wrote.
Tilman
Am 30.03.2016 um 00:00 schrieb Jerry:
I have written an application that generates an .epub document from
user input.
I am now trying to use PdfBox to add PDF output of the same source
text. But I have encountered problems when trying to render bold or
italic text:
- In the italic font, the characters u and i in the word "quick" are
overlapped.
- In the word-pair "brown fox" (where "brown" is in plain font and
"fox" is italic) there is no space between the words but there is an
extra space between the f and o in "fox".
- In the phrase "dog and ran" (which is bold) the single space between
"and" and "ran" is too wide, and there is no space following "ran" and
the next word.
And yet, the same string is rendered with correct spacing when output
as plain text (no font changes).
See the output files at:
https://www.dropbox.com/s/ox4arbrfiv5jqfu/withNoHtmlTags.pdf?dl=0
https://www.dropbox.com/s/wgj029hm4wre1x5/withItalicsAndBoldFonts.pdf?dl=0
As a newbie to both PDF and PdfBox, I started with a tutorial I found
at http://www.coderanch.com/t/659953/Wiki/PDFBox. Once I verified that
I had entered the tutorial correctly by running it and viewing the
output, I began experimenting by displaying a simple test string that
is long enough to require word wrapping. When I got that to work, I
tried adding bold and italic HTML tags to the string (since the end
goal is to create PDF from .epub source).
Here is my test code:
https://www.dropbox.com/s/k9d22s0xsgg8tz8/TestBed.java?dl=0
In TestBed.java, doTutorial() is the unmodified tutorial.
The method doMyCode() displays the test string by breaking it into
individual whole words. If I mark words with <i> and <b> tags, they
are correctly rendered with bold and italic fonts. But this limits
font changes to whole words only, which rules out a font change in the
middle of a string of characters. To handle that I need to output
individual characters, not words.
The method doMyCode2() displays the test string word by word unless
the word contains an HTML tag, then text is rendered character by
character.
If the test string contains no tags, it renders correctly.
See the sample file withNoHtmlTags.pdf.
When <i> and <b> tags are encountered, fonts get changed to
PDType1Font.TIMES_BOLD or PDType1Font.TIMES_ITALIC as required, and
the string is rendered, but the character spacing is mangled.
See the sample file withItalicsAndBoldFonts.pdf.
Both of these files were generated by the same code---the doMyCode2()
method---with the only change being the addition or subtraction of <i>
and <b> tags to the string paraText.
It does not appear to be a font problem, rather a rendering problem. I
get the same (well, nearly the same) results with both Times and
Helvetica---the "nearly the same" being the positioning of the u and I
characters in the word "quick"---still overlapping, but in the
Helvetica rendering, the i is in the middle of the u while in the
Times rendering, the i overlaps the last stroke of the u so that it
looks like a u with a dot over its tail.
What can I do to fix this?
Thanks.
Jerry
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