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bug#5721: Feature request: Function that returns absolute coordinates

From: Jan Djärv
Subject: bug#5721: Feature request: Function that returns absolute coordinates
Date: Thu, 15 Jul 2010 10:35:47 +0200
User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; sv-SE; rv: Gecko/20100608 Thunderbird/3.1

YAMAMOTO Mitsuharu skrev 2010-07-15 10.18:
On Thu, 15 Jul 2010 10:06:22 +0200, Jan Djärv<address@hidden>  said:

I think your "only" is quite big.  Lots of code, C and Lisp, does
that kind of calculation.

In what sense can they be simplified if we used absolute scaled
coordinate in Lisp as you say?

Then they wouldn't need to be changed at all.

Even with absolute unscaled, they DIDN'T need any changes in the
platform independent part.

That would require unscaled everywhere, even in pos-x-y, window sizes, font sizes and so on. I didin't think that was your suggestion.

Window system APIs requires us to specify absolute unscaled
coordinates when creating windows or popup menus, so some
conversions are necessary anyway.

That is the job of the platform specific code.

So you agree that changes are necessary in the platform specific part
regardless of scaled or unscaled when we support scaling factor?

I've said that from the start.

Again, if we used absolute scaled coordinates to specify `left' and
`top' frame parameters, we could only place the frame to the position
whose coordinates are multiples of the scale factor.

As I said earlier, special functions to deal with that for those that care.

        Jan D.

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