[Kde-accessibility] Option for large window borders

[Gunnar Schmi Dt]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello,

As the new window decoration API is now in the HEAD branch I have looked at 
it, especially in the sense of the wide-borders feature (which I have added 
to the planned-feature document).

As far as I have seen there is a method 
KDecorationOptions::preferredBorderSize() that returns one of the values 
BorderTiny, BorderNormal, BorderLarge, BorderVeryLarge, and BorderHuge.

If normal borders are 3 pixels wide and the size grows by 50 % for each larger 
value (which is a maximum growth if we do not want to have gaps in the 
sizes), then the border sizes would correspond to 2, 3, 4, 6, and 9. If we 
allow bigger gaps then they could be 2, 3, 7, 11, and 15. Unfortunately, for 
accessibility we need even wider borders than that.

As suggested within a mail thread on the kde-accessibility and kwin mailing 
lists I would prefer a solution where the standard border size mechanism 
allows the borders to get into sizes like 30 or 40 pixels (which is needed by 
some people).

In that sense I want to suggest the following changes to the API:

1. Add the options BorderVeryHuge and BorderOversized.

2. Place a recommendation for the pixel width for the different sizes:
BorderTiny = 2-3 pixels
BorderNormal = 3-5 pixels
BorderLarge = 5-8 pixels
BorderVeryLarge = 8-12 pixels
BorderHuge = 12-18 pixels
BorderVeryHuge = 18-27 pixels
BorderOversized = 27-40 pixels

3. Add a virtual method which returns one of three values to the API:
BorderFixedSize -- the decoration cannot be resized (default)
BorderLargeSize -- the border supports the values between tiny and very large
BorderHugeSize -- the border supports all values

4. Add some possibility for specifying the border width to the window 
decoration KCM. This could either be a combo box or a slider. (If we use a 
slider, it should have the labels "Normal", "Large", and (if the decoration 
supports huge borders) "Huge".

I can add these changes the CVS if they are accepted. However, I have an exam 
on Monday, so I will implement the large (or huge) border feature next week 
(so that it is ready by the 29th).

Gunnar Schmi Dt

P.S.:
I intentially wrote to the kwin list and cc'd to the core-devel and 
accessibility lists, so please make sure you don't forget these ccs in your 
replies.
- -- 
Co-maintainer of the KDE Accessibility Project
Maintainer of the kdeaccessibility package
http://accessibility.kde.org/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.0.7 (GNU/Linux)

iD8DBQE/aCTEsxZ93p+gHn4RArzrAKDBrX4Ud7FjlQfB6umh5rK9LAOeTACg/3eY
9gfpCDB6ZZtgJkGZDYVQYkA=
=Koa6
-----END PGP SIGNATURE-----