Re: [Pyobjc-dev] CoreText CTFontCreatePathForGlyph :: not defined?

[James T. <tra...@gm...>]

Gauging from the fact that this thread has gone stale, Is it safe to
assume that this just isn't possible with pyobjc?

-jt

On Thu, Apr 23, 2009 at 9:17 AM, James Trankelson <tra...@gm...> wrote:
> Ok, now using ord:
>
> v, gl = CTFontGetGlyphsForCharacters(font, ord(u'x'), None, 1)
>
> Produces:
>
> TypeError: Expecting UniChar
>
> -jt
>
> On Thu, Apr 23, 2009 at 7:43 AM, Ronald Oussoren <ron...@ma...> wrote:
>>
>> On 23 Apr, 2009, at 0:55, James Trankelson wrote:
>>
>>> Ok, so in order to do this, I need to install the version in the trunk.
>>
>> You don't have to install the version in the trunk, if you manually convert
>> unicode characters to integers (using "ord", rather than the unichar
>> function I mentioned yesterday)
>>>
>>> I hate to say it, but that's causing me trouble as well...
>>
>> Phew, I'm glad that didn't work. Please don't install PyObjC 2.2 in the
>> system install of Python.  There are differences between the current edition
>> of PyObjC and the version included in Leoopard and I don't know if those
>> changes are backward compatible. That means that installing an updated
>> version of PyObjC could break system components (especially on Leopard
>> Server).
>>
>> Sadly enough the version in the trunk isn't ready to be installed by new
>> users yet, I need to do some work on packaging (makeing sure that it can be
>> installed from source with the Python.org distribution, provide binary
>> packages, ...).
>>
>> Ronald
>>
>>>
>>> $ sudo easy_install pyobjc==2.2b1
>>>
>>> Searching for pyobjc==2.2b1
>>> ...
>>> Running pyobjc-2.2b1/setup.py -q bdist_egg --dist-dir
>>> /tmp/easy_install-_86MCZ/pyobjc-2.2b1/egg-dist-tmp-Q8jX-H
>>> The required version of setuptools (>=0.6c9) is not available, and
>>> can't be installed while this script is running. Please install
>>> a more recent version first, using 'easy_install -U setuptools'.
>>>
>>> (Currently using setuptools 0.6c7
>>>
>>> (/System/Library/Frameworks/Python.framework/Versions/2.5/Extras/lib/python))
>>> error: Setup script exited with 2
>>>
>>> $ sudo easy_install -U setuptools
>>> Searching for setuptools
>>> Reading http://pypi.python.org/simple/setuptools/
>>> Best match: setuptools 0.6c9
>>> Processing setuptools-0.6c9-py2.5.egg
>>> setuptools 0.6c9 is already the active version in easy-install.pth
>>> Installing easy_install script to /usr/local/bin
>>> Installing easy_install-2.5 script to /usr/local/bin
>>>
>>> Using /Library/Python/2.5/site-packages/setuptools-0.6c9-py2.5.egg
>>> Processing dependencies for setuptools
>>> Finished processing dependencies for setuptools
>>>
>>> $ sudo easy_install pyobjc==2.2b1
>>>
>>> (Same as first try)
>>>
>>> Is there some config file that will allow me to get this to point to
>>> the right setuptools?
>>>
>>> Thanks again.
>>>
>>> -jt
>>>
>>> On Wed, Apr 22, 2009 at 10:29 PM, Ronald Oussoren
>>> <ron...@ma...> wrote:
>>>>
>>>> On 22 Apr, 2009, at 14:38, James Trankelson wrote:
>>>>
>>>>> Bah. Thanks. Still not quite out of the woods, though.
>>>>>
>>>>> Now it's not having trouble finding the function
>>>>> (CTFontCreatePathForGlyph), but I get a new error:
>>>>>
>>>>> depythonifying 'short', got 'unicode' of 1
>>>>
>>>> I should have mentioned that, the version of pyobjc that's included with
>>>> Leopard cannot do what you want it to do. You must pass unichar(u'a'))
>>>> instead of u'a'.  The reason for that is that "unichar" is an alias for
>>>> "short int" in (Objective-)C, both result in the same metadata.
>>>>
>>>> The version of PyObjC that's in the subversion repository does know the
>>>> difference between "unichar" and "unsigned short" using hacks in the
>>>> metadata file.
>>>>
>>>>>
>>>>> My usage is nearly identical to an example in cttests.py for obtaining
>>>>> a font and getting the Glyph from it:
>>>>>
>>>>> v, gl = CTFontGetGlyphsForCharacters(font, u'x', None, 1)
>>>>> v = CTFontCreatePathForGlyph(font, gl[0], None)
>>>>>
>>>>> This leads me to wonder if the signature mentioned previously for
>>>>> CTFontCreatePathForGlyph was incorrect:
>>>>>
>>>>> '@@sn^{CGAffineTransform=ffffff}'
>>>>>
>>>>> Unfortunately, I can't find any documentation on how to map the
>>>>> signatures. For someone that knows, is this signature correct?
>>>>
>>>> The signature is correct. "s" is the encoding for both "short int" and
>>>> "unichar".
>>>>
>>>> Ronald
>>>>
>>>>>
>>>>> Thanks
>>>>>
>>>>> -jt
>>>>>
>>>>>
>>>>> On Wed, Apr 22, 2009 at 10:19 AM, Petr Mifek
>>>>> <pet...@an...> wrote:
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> James, import CoreText is missing there.
>>>>>>
>>>>>> Cheers, Petr
>>>>>>
>>>>>> James Trankelson wrote:
>>>>>>>
>>>>>>> It seems like some names can't be found. CoreText is one of them.
>>>>>>>
>>>>>>> from CoreText import *
>>>>>>> objc.loadBundleFunctions(CoreText.__bundle__, globals(), [
>>>>>>>             ('CTFontCreatePathForGlyph',
>>>>>>> '@@sn^{CGAffineTransform=ffffff}')
>>>>>>>    ], False)
>>>>>>>
>>>>>>> Produces: NameError: name 'CoreText' is not defined
>>>>>>>
>>>>>>> I tried manually loading the bundle as follows:
>>>>>>>
>>>>>>> objc.loadBundle("CoreText", globals(),
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> bundle_path=objc.pathForFramework(u'/Developer/SDKs/MacOSX10.5.sdk/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreText.framework'))
>>>>>>>
>>>>>>> Which also fails.
>>>>>>>
>>>>>>> -jt
>>>>>>>
>>>>>>> On Wed, Apr 22, 2009 at 7:22 AM, Ronald Oussoren
>>>>>>> <ron...@ma...>
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> On 21 Apr, 2009, at 20:59, James Trankelson wrote:
>>>>>>>>
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> I'm trying to do some CoreText suff (10.5). Most of the calls are
>>>>>>>>> fine, but one fails:
>>>>>>>>>
>>>>>>>>> global name 'CTFontCreatePathForGlyph' is not defined
>>>>>>>>>
>>>>>>>>> Is there any way around this?
>>>>>>>>
>>>>>>>> Which version of PyObjC do you use? I guess it's the one included in
>>>>>>>> Leopard, that seems to mis the symbol while PyObjC 2.2 does have it.
>>>>>>>>
>>>>>>>> Adding a new function can be done using objc.loadBundleFunctions:
>>>>>>>>
>>>>>>>>  import objc
>>>>>>>>  import CoreText
>>>>>>>>  objc.loadBundleFunctions(CoreText.__bundle__, globals(), [
>>>>>>>>             ('CTFontCreatePathForGlyph',
>>>>>>>> '@@sn^{CGAffineTransform=ffffff}')
>>>>>>>>    ], False)
>>>>>>>>
>>>>>>>> The code above (untested) should add 'CTFontCreatePathForGlyph' to
>>>>>>>> the
>>>>>>>> globals dictionary.
>>>>>>>>
>>>>>>>> Ronald
>>>>>>>>>
>>>>>>>>> Thanks
>>>>>>>>>
>>>>>>>>> -jt
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>
>>>>
>>
>>
>