Linked by the_randymon on Tue 29th Jan 2013 00:20 UTC
X11, Window Managers Any modern operating system consists of layers upon layers of systems, services, and libraries. Increasingly, no one can possibly have full understanding of all the layers of the cake. Here's RedHat developer Peter Hutterer's description of what it takes to move the cursor on your screen. Interesting to get back to the basics, and a good reminder of how complicated this stuff really is.
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RE: Comment by some1
by nutt on Tue 29th Jan 2013 14:59 UTC in reply to "Comment by some1"
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Yeah, also "The driver submits two relative coordinates to the server" skips over the interesting bit about how said driver acquires those coordinates. If you have something like a Bluetooth mouse, this part is much more complex than some simple coordinate transformations.

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