CGImageDestination Class
Definition
Important
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Use this class to save images and have detailed control over how the images are saved.
public class CGImageDestination : IDisposable, ObjCRuntime.INativeObjecttype CGImageDestination = class
interface INativeObject
interface IDisposable- Inheritance
-
CGImageDestination
- Implements
Remarks
You create new instances of CGImageDestination by calling one of the factory methods. There are three versions of it:
- Storing the generated image into a file pointed to by an NSUrl.:
- Storing the generated image into an NSMutableData:
- Storing the generated image into a CGDataConsumer:
In the classic API, those methods were called FromUrl, FromData and Create respectively. But this naming was incorrect, as it did not really create an image destination from a url, or a data. In the Unified API, they have all been turned into Create(NSMutableData, String, Int32, CGImageDestinationOptions) methods.
Once you have created the image, you can call M:ImageIO.CGImageDestination.AddImage* or AddImageAndMetadata(CGImage, CGImageMetadata, CGImageDestinationOptions) to add one or more images.
To write out the image, you must call the Close() method.
// The following example shows how to store an image into
// an in-memory PNG file stored inside an NSData.
NSData ImageToPng (CGImage image)
{
var storage = new NSMutableData ()
var dest = CGImageDestination.Create (storage, MobileCoreServices.UTType.PNG, imageCount: 1);
dest.AddImage (image);
dest.Close ();
return storage;
}
Properties
| Handle |
Handle (pointer) to the unmanaged object representation. |
| TypeIdentifiers | |