Thousands of leaked CGContext ?
Thousands of leaked CGContext ?
- Subject: Thousands of leaked CGContext ?
- From: Eric Matecki <email@hidden>
- Date: Fri, 17 Apr 2015 11:38:27 +0200
Hi,
(I know this is not 100% Cocoa, but it isn't 100% CoreGraphics either...)
I'm drawing to an NSWindow with CoreGraphics, and each time there is a leaked CGContext, CGContextDelegate, CGColorTransform,
NSBitmapGraphicsContext, and NSFocusStack (one of each).
Here is how I do it :
CGDataProviderDirectCallbacks callbacks = {
0,
&MyProviderGetBytePointer,
&MyProviderReleaseBytePointer,
&MyProviderGetBytesAtPosition,
&MyProviderReleaseInfo
};
MyProviderStruct mps = { mBlock, mDirtyRect.X(), mDirtyRect.Y() };
CGDataProviderRef provider = CGDataProviderCreateDirect( &mps, sizeof(mps), &callbacks );
NSWindow* window = (NSWindow*)Window();
CGImageRef image = CGImageCreate( size_t(mDirtyRect.W()), size_t(mDirtyRect.H()), 8, 32, size_t(mBlock->Width()*4),
[[window colorSpace] CGColorSpace], kCGBitmapByteOrder32Big | kCGImageAlphaNoneSkipFirst,
provider, NULL, false, kCGRenderingIntentRelativeColorimetric );
CGContextRef myContext = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
CGContextDrawImage( myContext, CGRectMake( mDirtyRect.X(), geom.H() - mDirtyRect.Y() - mDirtyRect.H(),
mDirtyRect.W(), mDirtyRect.H() ), image );
CGContextFlush( myContext );
CGImageRelease( image );
CGDataProviderRelease( provider );
I don't release the CGContextRef because I don't 'create' it.
If I release it, the app doesn't crash but doesn't draw anything anymore after the first one.
My data provider just copy bytes from a legacy data structure.
What am I doing wrong ?
Or maybe there is a better way of doing this ?
Thanks for any help !
--
Keep intel OUTSIDE my Mac !
Hiii !!! I can see Intel chips creeping around my G5 !
Eric M.
_______________________________________________
Cocoa-dev mailing list (email@hidden)
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden