public override NSDictionary GetFileAttributesToWrite(NSUrl forUrl, UIDocumentSaveOperation saveOperation, out NSError outError)
{
try {
var imageScale = (nfloat)1.0;
var size = new SizeF(1024, 1024);
UIGraphics.BeginImageContextWithOptions(new CoreGraphics.CGSize(size.Width, size.Height), true, imageScale);
var c = UIGraphics.GetCurrentContext();
var g = new Graphics.CoreGraphicsGraphics(c, true);
DocumentAppDelegate.Shared.App.DrawThumbnail(this, g, size, DocumentAppDelegate.Shared.Theme, readOnlyDoc: true);
var image = UIGraphics.GetImageFromCurrentImageContext();
UIGraphics.EndImageContext();
outError = null;
var images = NSDictionary.FromObjectsAndKeys(
new NSObject[] { image },
new NSObject[] { new NSString("NSThumbnail1024x1024SizeKey") });
return(NSDictionary.FromObjectsAndKeys(
new NSObject[] { NSNumber.FromBoolean(true), images },
new NSObject[] { NSUrl.HasHiddenExtensionKey, NSUrl.ThumbnailDictionaryKey }));
}
catch (Exception ex) {
Log.Error(ex);
return(base.GetFileAttributesToWrite(forUrl, saveOperation, out outError));
}
}
public override bool WriteContents(NSObject contents, NSUrl toUrl, UIDocumentSaveOperation saveOperation, NSUrl originalContentsURL, out NSError outError)
{
if (contents != null)
{
Console.WriteLine("IN WRITE CONTENTS");
return(base.WriteContents(contents, toUrl, saveOperation, originalContentsURL, out outError));
}
outError = new NSError(new NSString("CONTENTS NULL"), 999);
return(false);
}
public virtual bool WriteContents(AnyObject contents, NSURL toURL, UIDocumentSaveOperation forSaveOperation, [Optional] NSURL originalContentsURL, NSErrorPointer error)
{
return(default(bool));
}
public virtual bool WriteContents(AnyObject contents, Dictionary <NSObject, AnyObject> andAttributes, NSURL safelyToURL, UIDocumentSaveOperation forSaveOperation, NSErrorPointer error)
{
return(default(bool));
}
public virtual void SaveToURL(NSURL url, UIDocumentSaveOperation forSaveOperation, Action <bool> completionHandler)
{
}
public virtual void UpdateChangeCountWithToken(AnyObject changeCountToken, UIDocumentSaveOperation forSaveOperation)
{
}
public virtual AnyObject ChangeCountTokenForSaveOperation(UIDocumentSaveOperation saveOperation)
{
return(default(AnyObject));
}
public virtual string FileNameExtensionForType(string typeName, UIDocumentSaveOperation saveOperation)
{
return(default(string));
}
public virtual Dictionary <NSObject, AnyObject> FileAttributesToWriteToURL(NSURL url, UIDocumentSaveOperation forSaveOperation, NSErrorPointer error)
{
return(default(Dictionary <NSObject, AnyObject>));
}