| TITLE: | Document Style Semantics and Specification Language (DSSSL) - Amendment 1: Extensions to DSSSL |
| SOURCE: | Project Editor |
| PROJECT: | JTC1.34.15.06.01.01 |
| PROJECT EDITOR: | Shigeru Kaida |
| STATUS: | DAM text |
| ACTION: | DAM Ballot |
| DATE: | 2002-05-21 |
| DISTRIBUTION: | SC34 and Liaisons |
| REFERENCEs: | SC34 N0281 Disposition of comments on PDAM1 SC34 N0258 Summary of Voting on PDAM1 SC34 N0216 PDAM1 to DSSSL |
| REPLY TO: |
This amendment 1 specifies additional flow object classes and additional formatting areas, and clarifies some existing definitions in ISO/IEC 10179:1996:
a) Additional flow object classes are defined to specify on flow object classes of online display. Additional formatting areas are defined to clarify formatting areas for inline-display area and inter-line attachment area.
b) Annex B (informative) summarizes and clarifies the existing types and symbols. This annex will be a key to considering future extensions to DSSSL.
c) Annex C (informative) specifies formal public identifiers and their associated characteristics for various line breaking and line composition methods.
d) Annex D (informative) summarizes and clarifies the grove plan and SGML property set.
e) Annex E (informative) summarizes and clarifies the flow object classes and characteristics.
f) Annex F (informative) summarizes and clarifies the values of characteristics.
Add the following subclauses after subclause 12.6.28.4.
This clause defines an extended-online feature.
The display-window
flow object class specify an abstract size for the display frame of an online
display. The display-window flow object class may get the top position of
current scroll flow object classes as its root class. The display-window flow
object class may be a recursive flow object class. It has a single principal
port, which accepts any displayed flow objects.
This flow object has the
following characteristics:
-- frame-type: one of the symbols window, dialogue, note, caution, alarm or warning. It specifies the type of window to be displayed. The initial value is window.
-- frame-size: one of the symbols maximum-size, good-size or minimum-size. It specifies the relative size of window to be used online display. The initial value is good-size. This actual values used to represent this characteristic will depend on frame-type characteristics and display devices.
This clause defines an extended-online feature.
The pop-up flow
object class provides information relating to a pop-up area, or the edge area
of the current window frame. It has a single principal port, which accepts any
displayed flow objects.
This flow object has the following
characteristics:
-- information-type: one of the symbols anything, warning, error, additional-information, note, origin-of-link, voice-source, glyph or semantic. It specifies the type of information to be placed into the pop-up window or the edge area of the current window on online display. The initial value is anything.
NOTE: This flow object can be used to display any information, including position data relating to the grove structure.
This clause defines an extended-online feature.
The dialogue flow
object class is used to specify interactive dialogues for online display. The
dialogue flow object class shall be placed at the front top of the screen
display within a display-window flow object class. Dialogue flow object classes
be treated as an interactive flow object class. It has a single principal port,
which accepts any displayed flow objects.
This dialogue flow object has the
following characteristics:
-- dialogue-type: one of the symbols request, acknowledgement, select-objects, select-of-list or interaction. The initial value is acknowledgement.
-- dialogue-return-type: one of the symbols yes-no-cancel, yes-no, OK-ng, OK, words, phrase or information. The initial value is OK.
This clause defines the sound-voice-and-animation feature.
The
sound-voice and animation flow object classes is used for sounds, voices and
animations stored within a external entity. Flow object of these classes may be
inlined or displayed on online display. This flow object is atomic.
This clause defines the sound-voice feature.
The sound-voice flow
object class is used to specify sound and voice data to be used in conjunction
with an online display. The sound-voice flow object class may be an atomic
object on the other flow object classes, and it may be recursive on itself,
depending on the sound-voice system being used. It has a single principal port,
which accepts any flow objects.
This flow object has the following
characteristics:
-- output?: boolean specifying whether the flow object shall be output rather than displayed and inlined. This characteristics is not inherited. The default value is #t.
This clause defines the animation feature.
The animation flow object
class specify animation on online display. Animation flow object class may be
atomic object on other flow object classes. It has a single principal port,
which accepts any flow objects.
This flow object has the following
characteristics:
-- output?: is boolean specify whether the flow object shall be outputed rather than displayed and inlined. This characteristics is not inherited. The default value is #t.
Other specifications is system independent.
Add the following subclauses after subclause 12.3.4.
DSSSL has the following conceptualized formatting areas:
Display areas may include other display areas as well as inline areas. Inline areas may also include conceptualized display areas known as inline-display areas. DSSSL defines an inline-display area as a "display area included within an inline area".
For examples, DSSSL has the following formatting areas for composition:
The concept of an attachment creates a link between one of display area
or inline area and an attachment area. The attachment area for a display area
shall be outside the display area.
The attachment area for an inline area
shall be within the inter-line area between the current line and the
immediately following line, or the border adjacent to the next display area.
DSSSL, therefore, has the following formatting areas:
Add the following subclause after subclause 12.2.
A DSSSL processor generates a flow object tree. The flow object tree contains information about the results of applying formatting specifications. DSSSL style editors operate on the flow object tree through an abstract application program interface. This API shall report the following information:
The abstract API will include dynamic information relating to the document under construction. DSSSL may define a core interface for page composition. The API architecture is system independent.
Add the following annexes after Annex A.