Standard Type Service Framework - Unicode-based Framework for Rendering Typographically Sophisticated Text
Alexander Gelfenbain - Sun Microsystems, Inc.
Standard Type Services Framework (STSF) is a software framework for rendering typographically sophisticated text for UNIX and UNIX-like systems. STSF is imaging system independent, and an X11 extension is provided to make STSF functionality available to the X Window System clients.
Text and font handling on UNIX and UNIX-like systems lags significantly behind modern Windows and MacOS based desktop computers and the goal of STSF is to close this gap by providing support for modern font technologies, rendering technologies, graphics environment, simple and user-friendly font management, enumeration and naming and internationalization.
STSF supports OpenType and TrueType GX fonts, gray-scale and LCD-optimized text, affine transformations, and dynamically loaded font rasterizers. Its architecture is based on the client-server paradigm with a single ST Font Server running on a host computer and multiple clients linked against ST Client Libraries that connect to it.
The STSF API architecture is similar in concept to Java2D TextLayout object and Apple ATSUI - encapsulating logically related text in units of processing and assigning formatting features assembled in "style objects" to it.
The native encoding of STSF is Unicode represented as UTF-16BE.
STSF is a new Unicode-based framework that makes X11 running on UNIX and UNIX-like platforms a better desktop platform.
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