Re: Pixel-perfect migration from ATSUI to Core Text
Re: Pixel-perfect migration from ATSUI to Core Text
- Subject: Re: Pixel-perfect migration from ATSUI to Core Text
- From: Andreas Falkenhahn <email@hidden>
- Date: Wed, 31 Aug 2016 20:24:04 +0200
On 31.08.2016 at 20:08 Alastair Houghton wrote:
> On 31 Aug 2016, at 15:52, Andreas Falkenhahn <email@hidden> wrote:
>> But I still don't understand how computing glyph positioning manually
>> should work around the fact that there are no APIs that measure the text
>> like ATSUI. I mean, internally, CTLineGetOffsetForStringIndex() probably
>> does exactly that, it returns the positioning obtained from CTRunGetAdvances().
> You need to get the advances of individual glyphs, and sum the rounded values.
Look at the example code I posted. It's just a single glyph in the string.
The string is just a "W".
--
Best regards,
Andreas Falkenhahn mailto:email@hidden
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