That sounds like exactly what I need, thanks John! Cheers, Branden
On Fri, Feb 5, 2016 at 12:26 PM, John Hewson <[email protected]> wrote: > >> On 5 Feb 2016, at 05:05, Branden Visser <[email protected]> wrote: >> >> Hi all, >> >> I'm trying to get the visual bounds of a type 3 font. I've had success >> getting that information from many fonts using `getPath`, but it >> appears it's not supported for Type3. Is there a reliable way to >> understand drawing information for those? > > Some Type 3 glyphs begin with the “d1” operator which specifies both > the logical width and the bounding box of the glyph. However, many > begin with “d0” which simply specifies the logical width, which isn’t > what you want. > > In theory a Type 3 glyph can contain arbitrary PDF drawing commands > but in practice they are used only for bitmap fonts which contain a single > “BI” operator to draw a masked image. This means it’s actually fairly > easy to extract this image (and then combine its size with the bbox from > d1 and the font matrix to get the glyph’s visual bounding rect). All you > need is a custom PDFStreamEngine which handles only those operators. > We actually have one in preflight, called PreflightType3Stream, which you > can use as starting point. > > — John > >> Thanks, >> Branden >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
