[haiku-development] Re: Blitting
- From: Caitlin Shaw <rogueeve@xxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Mon, 14 Sep 2009 14:14:10 -0700
> Doesn't BView::DrawBitmap(const BBitmap* image, BRect source,
> BRect destination) let you copy a specific part of your off-
> screen bitmap into your on-screen view?
>
> /Jonas.
>
>
Yes, but it is still only a one-way transfer. i.e., you can copy from a
BBitmap to a BView, but not a BView to a BBitmap, which means there
seems to no efficient way to implement the scenario I described where
you want to be able to temporarily back-up a random portion of the image
onscreen without having to maintain two whole separate copies of the
image (one onscreen, one offscreen).
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