Finding raw font file data from an ATSUFontID or font name

On Jun 25, 2:17 am, David Phillip Oster <os....DeleteThis@ieee.org> wrote:
> In article
> <037a153d-30cc-44b0-82d8-8d9d8dd44....DeleteThis@m18g2000vbi.googlegroups.com>,
>  Daniel Walter <d2wal....DeleteThis@gmail.com> wrote:
>
> > I have a library that requires either a path to a ttf file or the raw
> > data that is contained in a ttf file.  I would like to get this data
> > from an ATSUFontID for an installed system font.  Is this possible on
> > a Mac?
>
> Sure. see "Curves In Quickdraw"http://www.mactech.com/articles/develop/issue_08/Reed_text.htmlThe
> sample code shows how to parse a ttf file.

My goal is to find the ttf file or the ttf file data. I don't have
this file, all I have is a ATSUFontID.

Daniel

In article
<037a153d-30cc-44b0-82d8-8d9d8dd44208 RemoveThis @m18g2000vbi.googlegroups.com>,
Daniel Walter <d2walter RemoveThis @gmail.com> wrote:

> I have a library that requires either a path to a ttf file or the raw
> data that is contained in a ttf file. I would like to get this data
> from an ATSUFontID for an installed system font. Is this possible on
> a Mac?

<http://lists.apple.com/archives/carbon-dev/2008/Feb/msg00429.html>
seems to indicate that you can do:

ATSFontRef ref = (ATSFontRef) targetATSUFontID;

If not, try FMGetATSFontRefFromFont. It takes a FMFont, but according to
ATSUnicodeTypes.h, we have:

typedef FMFont ATSUFontID;

However, I think that call is deprecated.

Once you have a ATSFontRef, you should be able to do

FSRef fileRef;
OSStatus status = ATSFontGetFileReference( ref, &fileRef);

to get a file reference. If you really need the path, you will have to
do some FSGetCatalogInfo calls from there to build that path. I would
not go that route, but use the FSRef directly to attempt to read the
data. I do not know whether that will succeed when the font is activated.

Similarly, the FMGetATSFontRefFromFont or ATSFontGetFileReference calls
may fail if a font is installed but not activated. The documentation
does not make that clear to me.

Reinder