CODEWITHSUNDEEP
phppdf-generation
baniczek
baniczek

Reputation: 11

PDF format, word spacing

I'm implementing a pdf generator in PHP I have problem with word spacing, the option doesn't work or i'm not using word spacing parameter properly. I need this option to render text justified. The character spacing parameter works properly. This is how I'm rendering text:

BT

/F1 12 Tf

0 829 Td

5 Tw

(Hello world) Tj

ET

Word spacing parameter is bold. What i'm doing wrong?

Upvotes: 0

Views: 761

Answers (2)

baniczek
baniczek

Reputation: 11

thanks for your answers. yes i was using unicode font. i deal with it with TJ operator. now my text output looks like that:

[(Hello) -320 (world) -320] TJ

Btw i must improve my text justify algoritm because text right align is not on one level. And i write my own library because existing ones do not have a tools which i need and all code is in one class - i split objects and objects elements into differend classes like Zend_Pdf

Upvotes: 1

Mark Storer
Mark Storer

Reputation: 15868

As BrianS mentioned, Tw isn't applied to multi-byte fonts according to the PDF Spec. That explains one of the text layout bugs I had to deal with Many Moons Ago. Ya learn something new every day.

There's another possibility. Word spacing is only applied to ASCII 0x20 (dec 32). If you're using a non-breaking space, tab, or whatever, instead of The ASCII Space, it won't work. Looking at the above text, that's not it, but your actual PDF output could differ.

Upvotes: 1

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