Portable Layout Services:
Context-dependent and Directional Text
Copyright © 1997 The Open Group

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CAE Specification
Portable Layout Services: Context-dependent and Directional Text
X/Open Document Number: C616
ISBN: 1-85912-142-X

• Frontmatter
  • Preface
    • The Open Group
    • The X/Open Process
    • Open Group Publications
    • Versions and Issues of Specifications
    • Corrigenda
    • Ordering Information
    • This Document
    • Structure
    • Intended Audience
    • Typographical Conventions
  • Trade Marks
  • Acknowledgements
  • Referenced Documents
• Introduction
  • Scope
  • Example
  • Target Audience
  • Approach
    • Footnotes
• Complex-Text Languages - An Overview
  • Complex-text Languages
    • Layout Transformations and Related Attributes
  • Bidirectional Languages
    • The Arabic Languages and their Writing System
      • Arabic Alphabet Characteristics
      • Character Set Considerations
      • Shapes of the Arabic Characters
      • Numerals Used in Arabic
    • The Hebrew Language and its Writing System
      • Hebrew Alphabet Characteristics
  • Aspects of Bidirectional Language Writing Systems
    • Bidirectionality
      • Segments
      • Global Orientation
      • Text-types
      • Text-types and Reordering Techniques
      • Symmetrical Swapping
    • Shaping
      • Shaping in Cursive Script Languages
      • Character Composition, Ligatures and Diacritics
    • National Numbers
    • Bidirectional Data Entry
      • Keying Order
      • Bidirectional Keyboards
      • Bidirectional Typing Interfaces
      • Manual Typing Method
      • Automatic (Logical) Typing Method
    • Common User Access and Bidirectional Languages
  • Thai Language and its Writing System
    • Writing Thai Characters - Graphic Representation
    • Thai Written Symbols
    • Writing Order
    • What is a Thai Character?
    • Thai Numbers
    • Character Composition
    • Thai Character Rendering
      • Examples
  • Korean Language and its Writing System
    • Hangul Writing System
      • Writing Hangul Syllables - Graphic Representation
      • Word Grouping and Direction
    • Character Set Considerations
  • Conclusions and Guidelines
    • Footnotes
• Interface Overview
  • Opaque Data
  • Functions
  • Descriptors and Data Types
• Header File <sys/layout.h>
  • LayoutObject
    • Association with Attribute Objects and Locales
    • LayoutObject Content
  • Layout Values
    • Descriptors
      • Orientation (SG)
      • Context (SG)
      • TypeOfText (SG)
      • ImplicitAlg (SG)
      • Swapping (SG)
      • Numerals (SG)
      • TextShaping (SG)
      • ActiveDirectional (G)
      • ActiveShapeEditing (G)
      • ShapeCharset (SG)
      • ShapeCharsetSize (G)
      • ShapeContextSize (G)
      • InOutTextDescrMask (SG)
      • InOnlyTextDescr (SG)
      • OutOnlyTextDescr (SG)
      • CheckMode (SG)
      • QueryValueSize (G)
    • Layout Value Data Types
      • Type LayoutValues
      • Type LayoutTextDescriptor
      • Type LayoutEditSize
  • Layout Modifiers
    • Examples
    • Footnotes
• Layout APIs
  • m_create_layout
    • NAME
    • SYNOPSIS
    • DESCRIPTION
    • RETURN VALUE
    • ERRORS
  • m_destroy_layout
    • NAME
    • SYNOPSIS
    • DESCRIPTION
    • RETURN VALUE
    • ERRORS
  • m_getvalues_layout
    • NAME
    • SYNOPSIS
    • DESCRIPTION
    • RETURN VALUE
    • ERRORS
  • m_setvalues_layout
    • NAME
    • SYNOPSIS
    • DESCRIPTION
    • RETURN VALUE
    • ERRORS
    • APPLICATION USAGE
  • m_transform_layout
    • NAME
    • SYNOPSIS
    • DESCRIPTION
    • RETURN VALUE
    • ERRORS
    • APPLICATION USAGE
  • m_wtransform_layout
    • NAME
    • SYNOPSIS
    • DESCRIPTION
    • RETURN VALUE
    • ERRORS
    • APPLICATION USAGE
    • EXAMPLES
      • Example of Possible Presentation Algorithm
  • Notes
• Implementation Example
• LO_LTYPE Locale Category
  • Character Classifications Related to Directionality
  • Character Classifications of Control Characters
  • Character Classifications of National Numbers
  • Character Classifications of Composite Graphic Symbols
  • Mapping Keywords
  • Character Classification Related to Character Connectivity
• Dynamic Pluggable Interface
  • Operating System Requirement
  • Design
  • Data Structure
  • Calling Sequence
  • Sample Code
  • Common Naming for Layout Values
• Glossary
  • algorithm
  • Arabic country
  • Arabic numerals
  • Arabic script
  • ascender
  • ASMO
  • AttrObject
  • base shape
  • bidirectional languages
  • cell
  • character elements
  • charset
  • complex-text languages
  • composed character
  • composing character element
  • composite sequence
  • control character
  • cursive script
  • data entry
  • descender
  • deshaping
  • diacritic
  • display cell
  • enable (national languages)
  • encoding scheme
  • ECMA
  • explicit algorithm
  • field attributes
  • folding
  • global orientation
  • glyph
  • graphic character
  • graphic symbol
  • Hangul
  • Hanja
  • Hindi numerals
  • ideographic language
  • implicit algorithm
  • JAMO
  • language layer
  • Latin alphabet
  • layout
  • LayoutObject
  • layout transformation
  • layout value
  • ligature
  • logical order (or logical sequence)
  • lower case
  • monocasing
  • national numbers
  • nesting
  • non-composing character element
  • non-Latin-based alphabet
  • numbers
  • phonetic language
  • physical order (or physical sequence)
  • presentation
  • presentation form
  • presentation layout
  • presentation shape
  • processing layout
  • push mode
  • right-to-left mode
  • segment
  • ShapeCharset
  • shape determination
  • shaping
  • symmetrical swapping
  • text-type (or TypeOfText)
  • text attribute
  • upper case
  • visual data
• INDEX

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