Avoiding line cut-off in a multipage printout

[Graham Samuel]

It gets worse! I see now that the script can't know the exact number  
of lines that will be printed without clipping on a properly  
formatted page under Windows! What I can't understand (as with other  
aspects of printing) is why so few developers seem to care about  
this. Not everybody reads stuff on the screen: for example teachers,  
I find, want to carry bits of paper away with them (such as student  
reports) even if the actual app is a highly interactive screen-based  
thing.

It seems to me that in principle we can't know how much wiggle room  
to leave, because we can't know how different the screen and printer  
versions of Windows fonts might be. I haven't any real experience of  
this, but I guess that for some unusual fonts they might be very  
different indeed.  And I want my printing handler to be sufficiently  
generalised to allow it to print a text in any available font, chosen  
by the user and therefore not predictable by me. After all that's  
what even the most elementary text editors do. Come to that, what  
does the RR IDE do?

Is there nobody out there who has developed a rock-solid solution to  
this?

Puzzled

Graham

On Sun, 26 Mar 2006 16:57:51 -0800, Scott Morrow  
<scott at elementarysoftware.com> wrote:

> Graham,
> This is what I do, also and I agree that using the formattedHeight of
> characters seems more convoluted than one would like.  Or perhaps I
> don't understand things well enough.  I've found that when I switch
> to < formatForPrinting > the heights of things change enough to cause
> problems with any exact calculation I might have done  (last line may
> be partially clipped) unless I leave some wiggle room in my
> calculations.  Using lines would be nice.
>
> On Mar 26, 2006, at 5:36 AM, Graham Samuel wrote:
>
>
>> I have a print routine adapted from something Hugh Senior put in
>> The Scripter's Scrapbook (thanks Hugh). I may well have done
>> something stupid to it, but I am making heavy weather of making
>> sure that if I'm printing more than a single page of text, the last
>> line on any given page is not cut off so that only part of the line
>> shows.
>>
>> The issue is that AFAIK, RunRev thinks only in terms of pixels and
>> not in terms of lines of type. In these circumstances the only way
>> I can think of to avoid the cutoff is to add up all the formatted
>> heights of the successive lines until I find I've overflowed my
>> page area, then backtrack one whole line and print that (I'm
>> thinking of a generalised routine which will handle lines in
>> different fonts and of different heights, so I can't simply look at
>> the height of the first line and work from there).
>>
>> This works but it seem incredibly clunky. I assume that this
>> problem has been solved many times, and that maybe there is even a
>> way of telling RR that you want to print in whole lines but I've
>> somehow missed it.
>>
>> I'd be grateful for any advice.
>>
>> Graham
>> ----------------------------------------
>> Graham Samuel / The Living Fossil Co. / UK and France
>>
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----------------------------------------
Graham Samuel / The Living Fossil Co. / UK and France