From Wikipedia, the free encyclopedia
The
Apple Type Services for Unicode Imaging
(
ATSUI
) is the set of services for rendering
Unicode
-encoded text introduced in
Mac OS 8.5
and carried forward into
Mac OS X
.
It replaced the
WorldScript
engine for legacy encodings.
Obsolescence
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ATSUI was replaced by a faster
[1]
and modern Unicode imaging engine called
Core Text
in
Mac OS X 10.5
(Leopard).
It was officially deprecated with Xcode 4.6, which was released in December 2012: "Source code using ATS APIs will generate warnings while being compiled. For 10.8, there will be no loss of functionality but there could be areas where performance will suffer. Programmers are instructed to replace all their ATS code (including ATSUI) with CoreText as ATS functionality will be completely removed in future releases of OS X."
[2]
ATSUI was removed in September 2022 for source code targeting only
macOS 13 Ventura
, and is completely removed in
macOS 14 Sonoma
.
[3]
References
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External links
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