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- Path: sparky!uunet!comp.vuw.ac.nz!waikato.ac.nz!aukuni.ac.nz!cs18.cs.aukuni.ac.nz!jwil1
- Newsgroups: comp.sys.acorn.tech
- Subject: Translink type protocols...
- Message-ID: <1993Jan22.013939.10269@cs.aukuni.ac.nz>
- From: jwil1@cs.aukuni.ac.nz (TMOTA)
- Date: Fri, 22 Jan 1993 01:39:39 GMT
- Sender: jwil1@cs.aukuni.ac.nz (TMOTA)
- Organization: Computer Science Dept. University of Auckland
- Lines: 75
-
- > Or what if the user wants to use ChangeFSI instead of Translator (for reasons
-
- >This is like saying you might want to use StrongEd rather than Edit to edit a
- >text file ... you arrange the RunType to point to the one you want, or be
- >prepared to load it by hand first.
-
- No. It isn't quite the same. Edit vs StrongEd is generally a permanent choice,
- i.e. I run StrongEd all the time, and edit gets run only about 2 times a
- month, for about 30 seconds, to do something quick in a task window - I
- then save the text output of the taskwindow to StrongEd and quit Edit.
-
- What I meant is, imagine you have 30 'alien format' pictures, and you want to
- load them all into Paint. However, *some* of them you want to run through
- ChangeFSI, and some through Translator.
-
- If an arbitrary translator is auto-run when you drag the files to Paint,
- then you have no idea if the right choice of translator was made until it's
- too late.
-
- And what if your default translation settings are not correct - the
- translator (possibly the wrong one) will be auto-loaded, and then proceed
- to give a totally wrong translation anyway.
-
- In these cases, the user has to choose a translator by running it, set any
- translation options they desire, and *then* drag the files to Paint.
-
- However, after some email chats, I have come to the conclusion that translation
- can best be handled by a module to which all translators register, and this
- can then orchestrate the collaboration between two or more applications to
- translate data automatically. Having this module provide a *command for
- translators to include in their !Run file would allow all translators
- to register themselves not only for translations, but also for auto-running
- if no other translation path is already possible with loaded applications.
-
- >> It is extremely likely that I will therefore wish to supply scaling factors,
- >> quality factors (like FS dither or no dither, etc), colour translations
- >> (e.g. force to greyscale), etc. before loading the file.
-
- >Yes ... but a large part of this kind of system is to make it easy for naive
- >users, who just want a default option that works.
-
- Sure. But the method suggested just sounds too hit and miss. If a translation
- isn't available then a system variable is used to auto-run a translator
- that might stand only a small chance of being suitable, and use default
- settings that are more often than not going to be totally wrong.
-
- The suggestion of using a module to control all of this
- a) Makes everything more coherent. Somebody *knows* what is going on, rather
- than applications making inspired guesses about the best course of action.
-
- This will make the protocol faster, as well as allowing the 'best'
- translation out of a set of choices to be automatically chosen (in the
- case of several translation steps between the source and destination
- file formats)
-
- Also, it allows the possibility of giving the more advanced user a list
- of possible translations and options and allow them to set things up
- exactly as they want them before OKing the operation.
-
- b) Moves a lot of the effort from each application/writer into the master
- module, so implementing the protocol from an editor/translator will be
- much much simpler.
-
- >Indeed ... but I don't think you should ever worry about making life a bit
- >harder for a programmer, if you make it easier for the user.
-
- Sure, but only lazy sods like myself ever seem to be able to come up with
- easier ways of achieveing the same (or better) effect. If you won't even
- consider ease-of-programming in your plans, then you may just miss something
- crucial. Also, I think if any protocol is to find support, it has to be
- as easy as possible for the programmers to implement support for it, or
- it'll just fade away, and that benefits nobody.
-
- --
- themasterofthearcanejwil1@cs.aukuni.ac.nzthismessagewassentonrecycledelectrons
-