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angelo
 Post subject: cairo surface help
PostPosted: Fri Mar 23, 2012 12:39 pm 
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Familiar Face

Joined: Tue Dec 20, 2011 3:27 pm
Posts: 13
Hi all,

i have a simple problem, i draw several surfaces in a cairo context, with associated cairo_regions, that behave like buttons. Some of them remain below others so they are not visible.
Once i move the mouse over the images i check if i am "over" a button using cairo_region. But i get a "true" even for surfaces/regions that are not visible, in the bottom layers.
Is there a way to know, using cairo, if a surface is visible or if it is in the lower layers (not visible) ?

many thanks
Regards,
angelo
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freniram
 Post subject: Re: cairo surface help
PostPosted: Fri Mar 23, 2012 4:03 pm 
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Joined: Wed Feb 29, 2012 5:56 pm
Posts: 2
Have you tried http://cairographics.org/manual/cairo-Regions.html ?

There are several functions that test regions
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