I'm having a problem with exporting bitmaps with the art backend. (I
reported this on the bugtracker, but have not seen a response in a
month.) The code that I'm using is:
[aView lockFocus];
NSBitmapImageRep * rep = [[NSBitmapImageRep alloc]
initWithFocusedViewRect: [aView bounds]];
[aView unlockFocus];
I have not moved or resized the bounds, yet the image data is offset.
This happens for any view I happen to select. At one time the offset
was (5,5) but after updating to svn rev 24210 the offset is (1,1).
This did not happen in back-0.11.0 and it does not happen when I use
the xlib backend.
The method call used in NSBitmapImageRep, that returns the bitmap
data is [GSCurrentContext() GSReadRect: rect]; When I diffed the art
portions of back-0.11.0 against HEAD, I saw that a lot of code had
been changed relating to coordinate computations, but that ReadRect.m
is unchanged.
So, would whomever is maintaining the art backend, please take a look
at that section. Else I'll have to do my own hacking, and I don't
fully understand what is going on in there.
Cheers,
Mark Tracy
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