Re: Problems with a Layer backed NSView in a NSScrollView

[Kai]

Hi,

I am not sure whether this is relevant for your problem, but it might  
be useful to know that the content view of a scroll view gets a  
CATiledLayer instead of a normal CALayer via [setWantsLayer:YES].

The reasoning is that the content view can be potentially large and  
easily exceed the max size of OpenGL textures. Besides being tiled,  
CATiledLayer updates its contents lazily and in some background  
thread, if I remember correctly. In any case, it is different.

Best
Kai

On 19.6.2008, at 19:54, Moray Taylor wrote:

Thanks for the reply...

I've tried

[[[self pageScrollView] contentView] setWantsLayer:YES];

This results in a still flipped display, and very badly corrupted,  
lots of artifacts etc....

[[self pageScrollView] setWantsLayer:YES];

Nice display, but still flipped.

The transform that used to work before I tried the above line makes  
no difference if I set the scrollview to be layer backed.

Any ideas?


--- On Thu, 19/6/08, Scott Anguish <[EMAIL PROTECTED]> wrote:

From: Scott Anguish <[EMAIL PROTECTED]>
Subject: Re: Problems with a Layer backed NSView in a NSScrollView
To: [EMAIL PROTECTED]
Date: Thursday, 19 June, 2008, 5:50 PM
have you tried just setting the contentview of the scroll
view to
layer backed?

otherwise you can remvoe the extra transofrm you added to
the view
itself.


On Jun 19, 2008, at 11:38 AM, Moray Taylor wrote:

Hi there!

I've been tearing my hair out trying to figure
this out, so
hopefully someone will take pity!

Basicaly, I've a CALayer-backed custom view, which
works pretty
great, I use a transform to flip it, and it works
fine, the problem
happens when I put it in a NSScrollView....

If I put it in the scrollview, and set the
scrollview's
setWantsLayer to YES,  then it works good, very fast
and smooth
scrolling, BUT, it's completely upside down!

If I setWantsLayer to NO, then it's the right way
up, but jerky and
generally doesn't work (i.e. the scroll bar
doesn't do anything in
the scrollview)

I've tried flipping and unflipping the view,
applying a transform to
the CALayer (I had a transform to begin with, removed
it, no
difference), nothing I do will flip it back!

Please help!

Thanks

Moray



__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email
http://uk.docs.yahoo.com/nowyoucan.html
_______________________________________________

Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)

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:

http://lists.apple.com/mailman/options/cocoa-dev/scott%40cocoadoc.com

This email sent to [EMAIL PROTECTED]


     __________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
_______________________________________________

Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)

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:
http://lists.apple.com/mailman/options/cocoa-dev/kai%40granus.net

This email sent to [EMAIL PROTECTED]

_______________________________________________

Cocoa-dev mailing list (Cocoa-dev@lists.apple.com)

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:
http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com

This email sent to [EMAIL PROTECTED]