I am trying to create a buffered window and get notified whenever
areas are repainted so that I can also send those areas over the
network to a custom remote bitmap display. I don't want to copy the
complete buffered image on each update as that would be much too slow.
NSView has getRectsBeingDrawn which seems close. What I really want
is to hook into the code that is computing those rects. I assume this
is done in NSWindow displayIfNeeded. But I don't see where the damage
rects are stored.
Or maybe NSWindow flushWindowIfNeeded would work. But I don't see how
to get the rects that need to be copied to the screen.
Any ideas on how this could be done?
Denis
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