Allow UIAlertController to get the position info.

Author: ainopara

Source/JTSImageViewController.h

@@ -173,7 +173,7 @@ extern CGFloat const JTSImageViewController_DefaultBackgroundBlurRadius;
 /**
  Called when the image viewer detects a long press.
  */
-- (void)imageViewerDidLongPress:(JTSImageViewController *)imageViewer;
+- (void)imageViewerDidLongPress:(JTSImageViewController *)imageViewer atRect:(CGRect)rect;
 
 /**
  Called when the image viewer is deciding whether to respond to user interactions.

Source/JTSImageViewController.m

@@ -1492,8 +1492,9 @@ - (void)imageLongPressed:(UILongPressGestureRecognizer *)sender {
     }
 
     if (self.image && sender.state == UIGestureRecognizerStateBegan) {
-        if ([self.interactionsDelegate respondsToSelector:@selector(imageViewerDidLongPress:)]) {
-            [self.interactionsDelegate imageViewerDidLongPress:self];
+        if ([self.interactionsDelegate respondsToSelector:@selector(imageViewerDidLongPress:atRect:)]) {
+            CGPoint location = [sender locationInView:self.imageView];
+            [self.interactionsDelegate imageViewerDidLongPress:self atRect:CGRectMake(location.x, location.y, 0.0f, 0.0f)];
         }
 
         BOOL allowCopy = NO;