Re: [Podofo-users] String bounding box

2019-11-20 Thread Michal Sudolsky 
>
>
> 1. I would need to know the horizontal displacement of a glyph and I am
> using GetGlyphWidth(), if that is correct what about the vertical
> displacement?
>

If I am not wrong fonts in pdf have defined only widths. But I guess height
could be in font file or can be calculated from glyph vector
representation. Would not be enough to use font size as general height?



> 2. What is the correct way to determine, given the PdfString, the
> GlyphId(s) contained within it ?
>
>
If you mean that you have PdfString with some text for example obtained in
this way from utf8:

PdfString text(reinterpret_cast("Abc"));

And you have instance of PdfEncoding and PdfFont then in order to get
glyphs can be called

PdfEncoding::ConvertToEncoding( const PdfString & rString, const PdfFont*
pFont )

This is used in PdfFont::WriteStringToStream to generate hex encoded
parameter for Tj operator and is used for example in PdfPainter::DrawText.

But using PdfEncoding and PdfFont loaded from pdf has still some bugs:

https://sourceforge.net/p/podofo/mailman/message/36484599/
https://sourceforge.net/p/podofo/mailman/message/36488037/



> Thanks,
> Pietro.
>
>
>
>
>
>
> ___
> Podofo-users mailing list
> Podofo-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/podofo-users
>
___
Podofo-users mailing list
Podofo-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/podofo-users

[Podofo-users] String bounding box

2019-11-19 Thread Pietro Paolini 

Hi all,

I'd like to compute the bounding box of a given string part of a text 
drawing instruction, such as TJ or similar. I've started writing a draft 
for it but I've stopped halfway through as I am unsure if PoDoFo 
implements such a thing off the shelf. Does it?


While writing a very rudimentary implementation of the "Text Space 
Details" computation as outlined in the PDF Reference two questions came 
to my mind:


1. I would need to know the horizontal displacement of a glyph and I am 
using GetGlyphWidth(), if that is correct what about the vertical 
displacement?
2. What is the correct way to determine, given the PdfString, the 
GlyphId(s) contained within it ?


Thanks,
Pietro.






___
Podofo-users mailing list
Podofo-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/podofo-users