On 05/11/15 12:22 PM, George Nychis wrote:
I am trying to gain a very technical understanding of how X maps coordinates on
the 2d screen to objects. For example, there are many applications running with
graphical interfaces to them active on the screen, and each application
interface has dozens (if not hundreds) of objects. Some objects are contained
within other objects.
So, what I am trying to learn more about is how X maps a screen coordinate (and
an action like a mouse click) to an object quickly. In particular, when there
are objects within objects, how it narrows the search down to the "smallest"
element that your mouse is hovering over when a click event fired.
I'd love to know about what data structures and algorithms are used to perform
this mapping between the 2D graphical space to objects. Pointers to prior
discussion, documentation, code... anything is helpful.
X only maps to the window - it's up to the application to map to objects in that
window.
--
-Alan Coopersmith- alan.coopersm...@oracle.com
Oracle Solaris Engineering - http://blogs.oracle.com/alanc
_______________________________________________
xorg@lists.x.org: X.Org support
Archives: http://lists.freedesktop.org/archives/xorg
Info: http://lists.x.org/mailman/listinfo/xorg
Your subscription address: %(user_address)s
