Re: Creating an NSImage of a View and its Contents
Re: Creating an NSImage of a View and its Contents
- Subject: Re: Creating an NSImage of a View and its Contents
- From: Stephen Blinkhorn <email@hidden>
- Date: Tue, 21 Dec 2010 16:19:35 -0600
On 21 Dec 2010, at 15:10, Corbin Dunn wrote:
I'll just copy the code here for you:
NSRect visibleRect = [_oldContentView visibleRect];
NSBitmapImageRep *imageRep = [_oldContentView
bitmapImageRepForCachingDisplayInRect:visibleRect];
[_oldContentView cacheDisplayInRect:visibleRect
toBitmapImageRep:imageRep];
Thanks Corbin, will try this technique out now.
Stephen
http://developer.apple.com/library/mac/#samplecode/AnimatedTableView/
Listings/ATPopupWindow_m.html
corbin
On Dec 21, 2010, at 1:08 PM, Corbin Dunn wrote:
Hi Stephen,
This was done in the AnimatedTableView demo app available on the
dev site. Check it out and let me know if you need pointing to the
particular part of code that does it.
corbin
On Dec 21, 2010, at 12:11 PM, Stephen Blinkhorn wrote:
Hi all,
I'm trying to capture a view and its contents as an NSImage which
I can subsequently draw in the view. The idea is that I'm trying
to 'freeze' the view's content (custom sliders, buttons, menus
etc) and present this image in the view.
I'm getting mixed results when attempting to render to a
CFLayerRef e.g.:
NSRect viewRect = [self bounds];
[self lockFocus];
NSBitmapImageRep* rep = [[NSBitmapImageRep alloc]
initWithFocusedViewRect:viewRect];
[self unlockFocus];
NSImage* image = [[NSImage alloc] initWithSize:viewRect.size];
[image addRepresentation:rep];
[image drawAtPoint:NSZeroPoint fromRect:viewRect
operation:NSCompositeSourceOver fraction:1.0];
[image release];
[rep release];
Nothing appears to be drawn in the layer. Is there a better
approach that I'm missing?
Thanks,
Stephen
_______________________________________________
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
_______________________________________________
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