Created
January 10, 2016 14:29
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NSView Snapshot
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| extension NSView { | |
| var snapshot: NSImage { | |
| guard let bitmapRep = bitmapImageRepForCachingDisplayInRect(bounds) else { return NSImage() } | |
| bitmapRep.size = bounds.size | |
| cacheDisplayInRect(bounds, toBitmapImageRep: bitmapRep) | |
| let image = NSImage(size: bounds.size) | |
| image.addRepresentation(bitmapRep) | |
| return image | |
| } | |
| } |
Figured it out. You need to change the bitmap representation properties (size in this instance) after setting it as a represenation of our target image. Props to @robrix for pointing me in the right direction!
extension NSView {
var snapshot: NSImage {
guard let bitmapRep = bitmapImageRepForCachingDisplayInRect(bounds) else { return NSImage() }
cacheDisplayInRect(bounds, toBitmapImageRep: bitmapRep)
let image = NSImage()
image.addRepresentation(bitmapRep)
bitmapRep.size = bounds.size.doubleScale()
return image
}
}
extension CGSize {
func doubleScale() -> CGSize {
return CGSize(width: width * 2, height: height * 2)
}
}
How to cache NSView filtered content?
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Not sure how to get a retina-scale (@2x) snapshot here. Tried messing with the different sizes but nothing worked...