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Re: InputSlot and MediaType

You can easily have media types appear in the Paper Feed pane, merged with the trays, by simply using *InputSlot to specify them instead of *MediaType.

Bo

At 3:24 PM -0600 6/2/03, Troy Bergstrand wrote:
> > From: Michael Sweet <email@hidden>
>>
>> Troy Bergstrand wrote:
>>> Paul,
>>>
>>> Why is it that Apple no longer merges *MediaType PPD options with
>>> *InputSlot and *ManualFeed options in the Paper Feed PDE (as of 10.x
>>> and later)?
>>>
>>> It doesn't make sense to allow the user to select both an input tray
>>> and a media type because the two selections might conflict.
>>
>> FWIW, non-PostScript printer drivers often need the InputSlot,
>> MediaType, and PageSize/PageRegion options set in order to get the
>> proper output; these drivers *could* use alternate names (e.g.
>> cupsInputSlot and cupsMediaType, or some other prefix), however that
>> would probably lead to the options appearing in the wrong place or
>> not at all.
>>
>> If MediaType and InputSlot are conflicting, there should be the
>> corresponding UIConstraint attributes in the PPD file to specify
>> those conflicts, e.g.:
>>
>> *UIConstraints: *InputSlot *MediaType
>> *UIConstraints: *MediaType *InputSlot
>>
>
>I'm sorry. I made a statement without providing an explanation and it led
>you to somewhat irrelevant conclusion.
>
>My concern is not that a particular MediaType conflicts with an InputSlot in
>the sense that the media type is not supported by the tray. As you say, that
>condition is managed using constraints.
>
>My point is that for (HP) PostScript devices, the selection of a media type
>leads to the selection of an input slot. (An administrator can assign the
>media type to the tray.) If the user also specifies an input slot (via the
>Paper Feed PDE), then the two selections might conflict. Since the input
>slot selection is more explicit, it is used. This might potentially confuse
>the user.
>
>Media type has a different relevance for raster devices in that different
>color profiles might be used for different media types. The is not the case
>for, at least, HP PostScript devices where color variances based on media
>type are handled within firmware.
>
>Allowing the user to select a tray by specifying "Transparencies" or
>"Letterhead" is a very useful function. It certainly can be done using a
>control apart from InputSlot (and ManualFeed) but it can lead to confusion.
>
>I believe that Apple's Paper Feed PDE is intended to work only with
>PostScript devices. Thus, *MediaType should be treated using the PostScript
>and not the raster model, that is, as a means of selecting an input tray, as
>was the case in the Classic LaserWriter driver.
>
>If others have a different opinion or different data points, I'd like to
>hear them.
>
>Troy
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References: 
 >Re: InputSlot and MediaType (From: Troy Bergstrand <email@hidden>)



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