As we discussed earlier, each token is read individually and variants are
stored in the stack as they are read. When the keyword "Tf" is read, the 2
variants on the top of the stack are the font size and then the font name
because they are the last that were added.
Palmer Zent
On Aug 29, 2013, at 9:12 AM, Domonic Tom <abdom...@hotmail.com> wrote:
> Hi
>
> Does the PdfContentsTokenizer read one line at a time. I'm just trying to
> understand how it picks up it's data (into the PdfVariant :out Parameter)
>
> The reason I ask is the line of code below.. (From TextExtractor.cpp in the
> 'TextExtractorPODOFO' example).
>
> It seems that if "Tf" is found then I should be able to extract the current
> font size and
> the fontname. This suggests that the whole line is picked up as a single
> token and the information is extracted from that. Is that correct?
>
> See the extract from a pdf file I've used below..(in red). Clearly there
> are white spaces between the 'Tf' the Font type 8 and the size 1
> Then how is it extracted. I thought the token would pick up the 'Tf' then
> the '1' then the 'F8' in separate loops.
>
> BT
> /F8 1 Tf
>
> TextExtractor.cpp ,, from line 97 to 108.
>
> if( bTextBlock )
> {
> if( strcmp( pszToken, "Tf" ) == 0 ) // Set text font and size
> {
> dCurFontSize = stack.top().GetReal();
> stack.pop();
> PdfName fontName = stack.top().GetName();
> PdfObject* pFont = pPage->GetFromResources(
> PdfName("Font"), fontName );
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