Table View with pattern-from-image background color "smears"

Discussion in 'Mac Programming' started by Starfox, Feb 14, 2012.

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  1. Starfox, Feb 14, 2012

    Starfox macrumors regular

    Joined:
    Apr 7, 2011
    #1
    I have a table view that I set the background color of to a pattern image. Whenever I grab the edge of the window and size it up smears are left in the direction of the resize, like dirty rects not being re-drawn properly. It doesn't happen when I turn off copy-on-scroll for the enclosing scroll view but I'd hate to lose performance to that since my table view is view-based and the views aren't very cheap. Any ideas as to how I can fix that?
     
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  2. Sydde, Feb 14, 2012

    Sydde macrumors 68020

    Sydde

    Joined:
    Aug 17, 2009
    #2
    The dirty, ugly way to handle this might be with a delegate to the window. The delegate can receive a message that live resize is starting: switch off copiesOnScroll; later, the delegate will receive the complementary message that resize is ending, at which point you can turn it back on. See if that works.
     
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  3. Starfox, Feb 15, 2012

    Starfox thread starter macrumors regular

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    Apr 7, 2011
    #3
    That sounds extremely hackish - did no one consider that people might use patterns as a background? Do I really have to fight against Cocoa to get this working?
     
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