Re: QCView
Re: QCView
- Subject: Re: QCView
- From: David Duncan <email@hidden>
- Date: Tue, 26 Feb 2008 09:57:09 -0800
On Feb 26, 2008, at 7:03 AM, email@hidden wrote:
I am building on 10.4 and I would like to get a preview of a Quartz
Composition. The API snapshotImage works only on Leopard. So I have
tried
unsuccessfully to lockFocus drawRect and unlockFocus then save the
TIFFRepresentation, which results in an empty image.
The line pdfData = [oQCView dataWithPDFInsideRect:[oQCView bounds]];
returns a white image.
Any idea? Should I work with the QCRenderer?
QC renders via OpenGL, so yes you should try using the QCRenderer
instead.
Also, I have found pauseRendering and resumeRendering working on
Leopard
only too. So how to perform this actions on Tiger? The API
stopRendering
erases the QCView.
You will probably have to resort to the QCRenderer for this as well.
My target is (on Tiger): I have a text list of QC files with their
icons. I
click on a row of the list and I see a static preview of the first
frame of
the QC in a QCView. I double click and I play the QC. Other double
click and
I pause the QC (still visible). May I have a pointer? Thanks.
For specific details, you might want to consul the QuartzComposer-Dev
list, as the QC engineers monitor that list more so than this one.
--
David Duncan
Apple DTS Animation and Printing
email@hidden
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