BS ISO IEC 9636-5-1992 Information technology - Computer graphics - Interfacing techniques for dialogues with graphical devices (CGI) - Functional specification - Input an.pdf

1、BRITISH STANDARD BS ISO/IEC 9636-5:1991 Implementation of ISO/IEC 9636-5:1991 Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Functional specification Part 5: Input and echoingBSISO/IEC9636-5:1991 This British Standard, having been prepared

2、under the directionof the Information Systems Technology StandardsPolicy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15 June 1992 BSI 05-2000 The following BSI references relate to the work on this standard: Committee reference IST/31 Draft for comment 9

3、0/62658 DC ISBN 0 580 20739 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Information Systems Technology Standards Policy Committee (IST/-) to Technical Committee IST/31, upon which the following bodies were represented: Department o

4、f Trade and Industry (IT Standards Unit) Information Systems Committee of the Universities Funding Council Rutherford Appleton Laboratory Amendments issued since publication Amd. No. Date CommentsBSISO/IEC9636-5:1991 BSI 05-2000 i Contents Page Committees responsible Inside front cover National fore

5、word ii Foreword vi Text of ISO/IEC 9636-5 1BSISO/IEC9636-5:1991 ii BSI 05-2000 National foreword This British Standard reproduces verbatim ISO/IEC9636-5:1991 and implements it as the UK national standard. This British Standard is published under the direction of the Information Systems Technology S

6、tandards Policy Committee whose Technical Committee IST/31 has the responsibility to: aid enquirers to understand the text; present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; monitor related international and E

7、uropean developments and promulgate them in the UK. NOTEInternational and European Standards, as well as overseas standards, are available from BSI Sales Department, BSI, Linford Wood, Milton Keynes, MK146LE. A British Standard does not purport to include all the necessary provisions of a contract.

8、Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the ISO/IEC title page, pagesii tovi, p

9、ages1 to94 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.ISO/IEC9636-5:1991(E) ii BSI 05-2000 Contents Page Foreword vi Introduction 1 1 Scope 1 2 Normative refer

10、ences 1 3 Concepts 1 3.1 Introduction 1 3.2 Basic input model 2 3.3 Logical input devices 2 3.4 Measures 2 3.4.1 Measures of input class LOCATOR 3 3.4.2 Measures of input class STROKE 3 3.4.3 Measures of input class VALUATOR 3 3.4.4 Measures of input class CHOICE 3 3.4.5 Measures of input class PICK

11、 3 3.4.6 Measures of input class STRING 3 3.4.7 Measures of input class RASTER 4 3.4.8 Measures of input class GENERAL 4 3.5 Coordinate systems for VDC measures 4 3.6 Triggers 6 3.6.1 Trigger association 6 3.6.2 Timeouts 7 3.6.3 The break action 7 3.7 Input methods and state model 7 3.7.1 Logical in

12、put device model 7 3.7.2 Request input 8 3.7.3 Sample input 8 3.7.4 Remote echoing 9 3.7.5 Event input 12 3.8 Prompting, echoing, and acknowledgement 14 3.8.1 Prompting 14 3.8.2 Echoing 15 3.8.3 Acknowledgement 17 3.9 Portioning of returned input data 18 3.10 State restrictions 18 3.11 Inquiry 19 4

13、Interactions with other parts of ISO/IEC 9636 20 4.1 Interactions with more than one part of ISO/IEC 9636 20 4.2 Interactions with ISO/IEC 9636-1 (Overview) 20 4.3 Interactions with ISO/IEC 9636-2 (Control) 20 4.4 Interactions with ISO/IEC 9636-3 (Output) 20 4.5 Interactions with ISO/IEC 9636-4 (Seg

14、ments) 20 4.6 Interactions with ISO/IC 9636-6 (Raster) 20 5 Abstract specification of functions 20 5.1 Introduction 20 5.1.1 Data types employed 21 5.1.2 Validity of returned information 21 5.2 Input control functions 21 5.2.1 INITIALIZE LOGICAL INPUT DEVICE 21 5.2.2 RELEASE LOGICAL INPUT DEVICE 21

15、5.2.3 ECHO CONTROLS 22ISO/IEC9636-5:1991(E) BSI 05-2000 iii Page 5.2.4 PUT CURRENT MEASURE 23 5.2.5 ECHO DATA 24 5.2.6 DEVICE DATA 26 5.2.7 ASSOCIATE TRIGGERS 29 5.2.8 GET ADDITIONAL STROKE DATA 29 5.2.9 GET ADDITIONAL PICK DATA 30 5.2.10 GET ADDITIONAL STRING DATA 30 5.2.11 GET ADDITIONAL RASTER DA

16、TA 30 5.3 Request and sample functions 31 5.3.1 REQUEST 31 5.3.2 SAMPLING STATE 33 5.3.3 SAMPLE 33 5.4 Echo request input functions 34 5.4.1 INITIALIZE ECHO REQUEST 34 5.4.2 ECHO REQUEST 35 5.5 Event input functions 37 5.5.1 INITIALIZE EVENT QUEUE 37 5.5.2 RELEASE EVENT QUEUE 37 5.5.3 ENABLE EVENTS

17、38 5.5.4 DISABLE EVENTS 39 5.5.5 EVENT QUEUE BLOCK CONTROL 39 5.5.6 FLUSH EVENTS 39 5.5.7 FLUSH DEVICE EVENTS 40 5.5.8 AWAIT EVENT 40 5.5.9 DEQUEUE EVENT 41 5.5.10 EVENT QUEUE TRANSFER 42 5.6 Echo output functions 43 5.6.1 INITIALIZE ECHO OUTPUT 43 5.6.2 RELEASE ECHO OUTPUT 43 5.6.3 ECHO OUTPUT CONT

18、ROLS 43 5.6.4 PERFORM ACKNOWLEDGEMENT 44 5.6.5 UPDATE ECHO OUTPUT 45 5.6.6 ECHO OUTPUT DATA 46 6 Input and echoing inquiry functions 47 6.1 Introduction 47 6.1.1 Data types employed 47 6.1.2 Validity of returned information 47 6.2 Input description table 47 6.2.1 INQUIRE INPUT CAPABILITY 47 6.2.2 IN

19、QUIRE LIST OF AVAILABLE INPUT DEVICES 47 6.3 Class-independent logical input device description table 48 6.3.1 INQUIRE COMMON INPUT DEVICE PROPERTIES 48 6.3.2 INQUIRE LIST OF SUPPORTED ECHO TYPES 48 6.3.3 INQUIRE LIST OF SUPPORTED PROMPT TYPES 48 6.3.4 INQUIRE LIST OF SUPPORTED ACKNOWLEDGEMENT TYPES

20、 49 6.3.5 INQUIRE LIST OF ASSOCIABLE TRIGGERS 49 6.4 Class-specific logical input device description table 49 6.4.1 INQUIRE LOCATOR CAPABILITIES 49ISO/IEC9636-5:1991(E) iv BSI 05-2000 Page 6.4.2 INQUIRE STROKE CAPABILITIES 50 6.4.3 INQUIRE CHOICE CAPABILITIES 50 6.4.4 INQUIRE PICK CAPABILITIES 50 6.

21、4.5 INQUIRE STRING CAPABILITIES 51 6.4.6 INQUIRE LIST OF AVAILABLE INPUT CHARACTER SETS 51 6.4.7 INQUIRE RASTER INPUT CAPABILITIES 51 6.4.8 INQUIRE LIST OF PERMITTED RASTER SPOT CENTRE SEPARATIONS 51 6.4.9 INQUIRE GENERAL CAPABILITIES 52 6.4.10 INQUIRE LIST OF SUPPORTED GENERAL MEASURE FORMATS 52 6.

22、5 Class-independent logical input device state list 52 6.5.1 INQUIRE COMMON LOGICAL INPUT DEVICE STATE 52 6.5.2 INQUIRE LIST OF ASSOCIATED TRIGGERS 53 6.5.3 INQUIRE ECHO DATA RECORD 53 6.5.4 INQUIRE INPUT DEVICE DATA RECORD 54 6.6 Class-specific logical input device state list 54 6.6.1 INQUIRE LOCAT

23、OR STATE 54 6.6.2 INQUIRE STROKE STATE 55 6.6.3 INQUIRE VALUATOR STATE 55 6.6.4 INQUIRE CHOICE STATE 56 6.6.5 INQUIRE PICK STATE 56 6.6.6 INQUIRE STRING STATE 57 6.6.7 INQUIRE RASTER INPUT STATE 57 6.6.8 INQUIRE GENERAL STATE 57 6.7 Event input state list 58 6.7.1 INQUIRE EVENT INPUT STATE 58 6.8 Ec

24、ho output description table 58 6.8.1 INQUIRE ECHO OUTPUT CAPABILITIES 58 6.8.2 INQUIRE LIST OF ECHO OUTPUT ECHO TYPES 59 6.8.3 INQUIRE LIST OF ECHO OUTPUT PROMPT TYPES 59 6.8.4 INQUIRE LIST OF ECHO OUTPUT ACKNOWLEDGEMENT TYPES 59 6.8.5 INQUIRE LIST OF SUPPORTED GENERAL FORMAT IDENTIFIERS 60 6.9 Echo

25、 entity state list 60 6.9.1 INQUIRE LIST OF CURRENTLY EXISTING ECHO ENTITIES 60 6.10 Individual echo entity state list 60 6.10.1 INQUIRE ECHO ENTITY STATE 60 6.10.2 INQUIRE ECHO OUTPUT DATA RECORD 61 7 CGI description tables and state lists 61 7.1 Description tables 61 7.1.1 Input capability 61 7.1.

26、2 Class-independent logical input capability 62 7.1.3 Echo output capability 64 7.2 State lists 65 7.2.1 Input state 65 7.2.2 Class-independent logical input device state 65ISO/IEC9636-5:1991(E) BSI 05-2000 v Page 7.2.3 Class-specific logical input device state 66 7.2.4 Events 68 7.2.5 Echo entity s

27、tate 69 Annex A (normative) Formal grammar of the functional specification 70 Annex B (normative) Input errors 92 Annex C (informative) Guidelines for CGI implementors 94 Figure 1 Input Surface Coordinate mapping 5 Figure 2 Logical Input Device state diagram 8 Figure 3 Sampling State diagram 9 Figur

28、e 4 Flow of data during remote echoing 9 Figure 5 Echo Output Entity State diagram 11 Figure 6 Event Queue state diagram 13 Table 1 Input Classes 2 Table 2 Event Status of AWAIT EVENT 14 Table 3 Prompt Types 15 Table 4 Echo Types: LOCATOR 15 Table 5 Echo Types: STROKE 16 Table 6 Echo Types: CHOICE 1

29、6 Table 7 Echo Types: VALUATOR 16 Table 8 Echo Types: PICK 17 Table 9 Echo Types: STRING 17 Table 10 Echo Types: RASTER 17 Table 11 Echo Types: GENERAL 17 Table 12 Acknowledgement Types 18 Table 13 State Restrictions For Input Functions 18 Table 14 State Restrictions For Echo Output Functions 19 Tab

30、le 15 Key to abbreviations inTable 15 andTable 14. 19 Table 16 Input Description Table 62 Table 17 Class-Independent Logical Input Device Description Table 63 Table 18 Class-Specific Logical Input Device Description Table 63 Table 19 Echo Output Description Table 64 Table 20 Class-Independent Logica

31、l Input Device State List 66 Table 21 Class-Specific Logical Input Device State List 67 Table 22 Event Input State List 68 Table 23 Echo Entity State List 69 Table 24 Individual Echo Entity State List 69ISO/IEC9636-5:1991(E) vi BSI 05-2000 Foreword ISO (the International Organization for Standardiza

32、tion) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to

33、 deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO an

34、d IEC have established a joint technical committee, ISO/IECJTC1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least75% of the national bodies casting a vote. Inter

35、national Standard ISO/IEC9636-5 was prepared by Joint Technical Committee ISO/IECJTC1, Information technology. ISO/IEC 9636 consists of the following parts, under the general title Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Functional s

36、pecification: Part 1: Overview, profiles, and conformance; Part 2: Control; Part 3: Output; Part 4: Segments; Part 5: Input and echoing; Part 6: Raster. Annex A and Annex B form an integral part of this part of ISO/IEC9636. Annex C is for information only.ISO/IEC9636-5:1991(E) BSI 05-2000 1 Introduc

37、tion This part of ISO/IEC9636 describes the interface between a device-independent part of a graphics system and INPUT or OUTIN Virtual Devices from which graphical and non-graphical inputs can be obtained. CGI input functions control and perform different methods of input from a Virtual Device, all

38、owing the return of an input value according to user requirement. CGI input functions return a variety of data types which correspond to output data commonly used in graphics systems. 1 Scope This part of ISO/IEC9636 defines those functions of the Computer Graphics Interface concerned with obtaining

39、 graphical and non-graphical input from a Virtual Device of device class INPUT or OUTIN. This part of ISO/IEC9636 also defines functions to support echoing of input operations on separate Virtual Devices. This part of ISO/IEC9636 is part 5 of ISO/IEC9636, and should be read in conjunction with ISO/I

40、EC9636-1, ISO/IEC9636-2, and ISO/IEC9636-4. The relationship of this part of ISO/IEC9636 to the other parts of ISO/IEC9636 is described in ISO/IEC9636-1 and in clause4. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of t

41、his part of ISO/IEC9636. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO/IEC9636 are encouraged to investigate the possibility of applying the most recent editions of the standards listed below.

42、 Members of IEC and ISO maintain registers of currently valid International Standards. ISO/IEC 9636-1:1991, Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Functional specification Part 1: Overview, profiles, and conformance. ISO/IEC 9636-2:

43、1991, Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Functional specification Part 2: Control. ISO/IEC 9636-3:1991, Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Functional specif

44、ication Part 3: Output. ISO/IEC 9636-4:1991, Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Functional specification Part 4: Segments. ISO/IEC 9636-6:1991, Information technology Computer graphics Interfacing techniques for dialogues with g

45、raphical devices (CGI) Functional specification Part 6: Raster. ISO/IEC 9637-1:, Information technology Computer graphics Interfacing techniques for dialogues with graphical devices (CGI) Data stream binding Part 1: Character encoding 1) . ISO/IEC 9637-2, Information technology Computer graphics Int

46、erfacing techniques for dialogues with graphical devices (CGI) Data stream binding Part 2: Binary encoding 1) . ISO/IEC TR 9973:1988, Information processing Procedures for registration of graphical items. 3 Concepts 3.1 Introduction This part of ISO/IEC9636 defines those functions of the Computer Gr

47、aphics Interface concerned with input and echoing. This functionality is divided into the following areas Input control functions, which provide control over initialization and deallocation of Logical Input Devices (LIDs), together with the means to tailor their characteristics. Request and sample f

48、unctions, which permit LIDs to be used with Request and Sample input methods. Echo request input functions, which permit LIDs to be used with the Echo Request input method, a special type of Request method in which changes to the LIDs measure value can be tracked by the client. 1) To be published.IS

49、O/IEC9636-5:1991(E) 2 BSI 05-2000 Event input functions, which permit LIDs to be used with the Event input method; this allows the client to control a number of active LIDs simultaneously while concurrently performing graphical output. Echo output functions, which allow values to be echoed on a given CGI Virtual Device when the source of such values was not the given device. Input and echoing inquiry functions, whi