[poppler] Rotated text

[Brüns, Stefan]

On Donnerstag, 30. August 2018 14:06:30 CEST thomas.karthe at daimler.com wrote:
> Hello all,
> 
> I have PDF documents created from a CAD-System (Siemens NX), containing
> rotated text.
 Some text is defined with  aspect ratio parameter
> (horizontal scaling). There is also vertical text.
> Pdftohtml (with –hidden  parameter) extracts text and position, but not
> rotation angle and stretching factor.
 Would it be possible to provide the
> rotation angle, vertical attribute and stretching factor? 
> <text width="26.916206" height="19.504377" left="298.557300"
> top="173.260625" font="0" angle="32.10" aspectratio="0.6"
> vertical="false">70.47</text>

It depends:
The PDF is just one big bitmap with hidden text (for selection or automation). 
The vertical text is not included as text at all.

The aspect ratio 0.6 text uses a different font with the corresponding AR, 
there is no highlevel information available about the fact.

The rotation is available as a transform matrix, which could be converted back 
to an angle.

Of course this needs someone to implement it ...

Kind regards,

Stefan