[MacTUG] lion login screen

[Donald Duff-McCracken]

Dani should come over and cook for my poor kids, because instead of doing that I have been farting around with login screen images for lion.

I have got it to work reasonably well

This is a good link for most of the info: http://t3kd.com/blog/2011/07/27/how-to-change-os-x-lion-login-screen-background/

Here is some extra info:
1) To stress, the image has to be set at 72 dpi. If it is wrong, it will fail
2) For some reason the image has to be a lot darker (I mean a lot). By guess and by gosh seems to be the way to do it
3) Speaking of dark, you want the bottom part to be pretty dark as it has the restart/start text on it.
4) I could not get scaling to work but if you have a larger image, it places it from the bottom left (the usual spot for this sort of thing). So even if you have a lab of multiple resolutions (which I do) if you have it scaled for the largest size and make an image that works fine if the top is cropped or whatever, then things are fine. For example, I took a nature image of grass from the apple desktop picutres folder, and put a bit of a gradient accross the bottom of it (so the buttons look ok on it) and scaled it for the largest monitor I use and if a bit is cropped off the sides or edges it does not matter -- and looks better than that stupid linen.

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Donald Duff-McCracken
Technical Services Manager
Mapping, Analysis & Design
Faculty of Environment
University of Waterloo
(519) 888-4567 x32151
http://www.environment.uwaterloo.ca/computing/people/don.html
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