Try this: (PDFDocument new compression: false)add: (PDFPage new add: (PDFTextElement new text: 'Hello'; from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference writeStream.
Compression causes your string to be gzip’d which is a ByteArray and not a String of any kind. Unfortunately, the write stream is a ZnCharacterWriteStream which is expecting some kind of String. This is going to take some untangling so just turn off compression (which is on by default) and it seems to work. > On Jan 17, 2024, at 4:43 PM, Richard O'Keefe <rao...@gmail.com> wrote: > > So the method is expecting some kind of string, but it received a > ByteArray, which is NOT any kind of string. > What's in the ByteArray? Where did it come from? Why isn't it a string? > > On Thu, 18 Jan 2024 at 04:34, sergio ruiz <sergio....@gmail.com> wrote: >> >> Hi, all. >> >> I am working on creating a PDF with Artefact >> (https://github.com/pharo-contributions/Artefact) and am having an issue >> running the first example. >> >> the Example looks like: >> >> PDFDocument new add: (PDFPage new add: (PDFTextElement new text: 'Hello'; >> from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference writeStream. >> >> >> When running this, I get the error: >> >> Instance of ByteArray did not understand #isByteString >> >> indeed, ByteArray does not have a method called isByteString. >> >> I have tried creating a method that returns either true or false (I tried >> them both), but I have not successfully built the PDF. >> >> The method calling isByteString looks like: >> >> >> ZnUTF8Encoder >> >> next: count putAll: string startingAt: offset toStream: stream >> "Write count characters from string starting at offset to stream." >> "Overwritten for performance reasons - create a fast path for byte strings" >> >> string isByteString >> ifTrue: [ self next: count putAllByteString: string startingAt: offset >> toStream: stream ] >> ifFalse: [ super next: count putAll: string startingAt: offset toStream: >> stream ] >> >> I TOTALLY get this. This is a whole bunch of very specific questions. But my >> ultimate goal is to take a deep dive into stream processing to figure this >> out. >> >> Thanks! >> >> ---- >> peace, >> sergio >> photographer, journalist, visionary >> >> Public Key: >> https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 >> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV >> @sergio_101@mastodon.social >> https://sergio101.com >> http://www.codeandmusic.com >> http://www.twitter.com/sergio_101 >> http://www.facebook.com/sergio101 >>
