Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!cbmvax!daveb
From: daveb@cbmvax.UUCP (Dave Berezowski)
Newsgroups: comp.sys.amiga.tech
Subject: Re: 2 unrelated questions (long?)
Message-ID: <6496@cbmvax.UUCP>
Date: 4 Apr 89 20:53:31 GMT
References: <890403170253.204022be@elcc.epfl.ch>
Reply-To: daveb@cbmvax.UUCP (Dave Berezowski)
Organization: Commodore Technology, West Chester, PA
Lines: 49

In article <890403170253.204022be@elcc.epfl.ch> gay@elde.epfl.ch (David Gay) writes:
>a) YAPQ - Yet another printer question
>
>In article <sorry, no ref> daveb@cbmvax.uucp writes:
>>In article <890329170226.20401ec5@elcc.epfl.ch> I write:
>>>How can I work out the maximum size for a graphic dump ? If I send a DUMPRPORT
>
>>>request with SPECIAL_NOPRINT, SPECIAL_FULLCOLS and SPECIAL_FULLROWS, it sets
>>>io_DestCols & io_DestRows, but adjusts them so that the ratio of my RastPort i
>s
>>
>>>preserved. Is there any way round this ? If not, any easy way to work these
>>>out from the returned values ? (I want the margins, left offset, etc to be tak
>e
>>n
>>>
>>>into account of course.)
>>>
>>        There are many ways to do what you want.  The simplest way is to
>>set io_DestCols and io_DestRows to some enormus value (like 5000).  The printer
>
>>device will chop these numbers down so that they fit on the paper.
>
>I chose LONG_MAX ...
>
>>Another
>>way would be to set these values explicitly in preferences (on the 2nd printer
>>graphic screen) under the Limits heading of Pixels.
>
>Actually, I'm trying to print according to the users preferences, at the
>printers resolution, in slices, following a user specified ratio (I'm printing
>graphs). I have one last (really!) question:
>
>Can I use the PaperLength field(in combination with PrintSpacing) of preferences
>
>as an indication of the size of one page ?
>
	To get a TRUE indication of the printable graphics area you should
look at PED->ped_MaxXDots, PED->ped_MaxYDots, PED->ped_XDotsInch, and
PED->ped_YDotsInch.

	PED->ped_MaxXDots / PED->ped_XDotsInch => printable width

	PED->ped_MaxYDots / PED->ped_YDotsInch => printable height

	if PED->ped_MaxYDots == 0 then the printer has no maximum
	(probably because it is using continuous form paper).

	Regards, David B