Re: Offscreen Drawing, NSView-Quartz-Mix
Re: Offscreen Drawing, NSView-Quartz-Mix
- Subject: Re: Offscreen Drawing, NSView-Quartz-Mix
- From: Matthew Formica <email@hidden>
- Date: Mon, 04 Feb 2002 12:24:34 -0800
NSGraphicsContext's -graphicsPort returns a CGContextRef; from there, you
can go and call Quartz all you like.
- Matthew
On 2/4/02 3:47 AM, "Manfred Lippert" <email@hidden> wrote:
>
Hi,
>
>
I haven't read much of the documentation about drawing (NSView and Quartz)
>
and I am not completely familiar with the concepts about the various (?)
>
drawing contexts, so maybe my questions are somewhere answered inside the
>
docs or are perhaps trivial. But it is difficult to find specific answers to
>
my problems when you don't know where so search. So here it comes:
>
>
Is it possible to "intermix" NSView, NSGraphicsContext and Quartz drawing?
>
>
Is it possible to create an offscreen graphics context (NSGraphicsContext or
>
Quartz???) and "copy" the contents of an NSView into that offscreen context,
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draw some things there offscreen and copy the result back to the NSView?
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(All should be done inside the drawRect method of the NSView.)
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>
How can this be done?
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>
It would be great if someone can point me in the right direction.
>
>
I'll continue reading in the docs in the meanwhile ... ;-)
>
>
Regards,
>
Mani
>
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--
Matthew Formica
DTS Engineer - Developer Tools and Cocoa
Apple Computer, Inc.
email@hidden
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