+ Selection is highlighted when moved.

Classes/BITBlurImageAnnotation.m

@@ -12,6 +12,7 @@
 
 @property (nonatomic, strong) CALayer* imageLayer;
 @property (nonatomic, strong) UIImage* scaledImage;
+@property (nonatomic, strong) CALayer* selectedLayer;
 
 
 @end
@@ -25,6 +26,13 @@
       self.clipsToBounds = YES;
       self.imageLayer = [CALayer layer];
       [self.layer addSublayer:self.imageLayer];
+      
+      self.selectedLayer = [CALayer layer];
+      [self.layer insertSublayer:self.selectedLayer above:self.imageLayer];
+      
+      self.selectedLayer.backgroundColor = [[UIColor redColor] colorWithAlphaComponent:0.5f].CGColor;
+      self.selectedLayer.opacity = 0.6f;
+      self.clipsToBounds = YES;
     }
     return self;
 }
@@ -33,6 +41,7 @@
   CGSize size = CGSizeMake(sourceImage.size.width/30, sourceImage.size.height/30);
   
   UIGraphicsBeginImageContext(size);
+  
   [sourceImage drawInRect:CGRectMake(0, 0, size.width, size.height)];
   self.scaledImage = UIGraphicsGetImageFromCurrentImageContext();
   self.imageLayer.shouldRasterize = YES;
@@ -40,11 +49,19 @@
   self.imageLayer.magnificationFilter = kCAFilterNearest;
   self.imageLayer.contents = (id)self.scaledImage.CGImage;
   
-  
-  
   UIGraphicsEndImageContext();
 }
 
+- (void)setSelected:(BOOL)selected {
+  self->_selected = selected;
+  
+  if (selected){
+    self.selectedLayer.opacity = 0.6f;
+  } else {
+    self.selectedLayer.opacity = 0.0f;
+  }
+}
+
 - (void)layoutSubviews {
   [super layoutSubviews];
   
@@ -54,6 +71,7 @@
   self.imageLayer.frame = self.imageFrame;
   self.imageLayer.masksToBounds = YES;
   
+  self.selectedLayer.frame= self.bounds;
   [CATransaction commit];
 }
 

Classes/BITImageAnnotation.h

@@ -8,11 +8,17 @@
 
 #import <UIKit/UIKit.h>
 
-@interface BITImageAnnotation : UIView
+@interface BITImageAnnotation : UIView {
+  BOOL _selected;
+}
+
 @property (nonatomic) CGSize movedDelta;
 @property (nonatomic, weak) UIImage *sourceImage;
 @property (nonatomic) CGRect imageFrame;
 
 -(BOOL)resizable;
 
+- (void)setSelected:(BOOL)selected;
+- (BOOL)isSelected;
+
 @end

Classes/BITImageAnnotation.m

@@ -25,4 +25,12 @@
   return NO;
 }
 
+- (void)setSelected:(BOOL)selected {
+  self->_selected = selected;
+}
+
+- (BOOL)isSelected {
+  return self->_selected;
+}
+
 @end

Classes/BITImageAnnotationViewController.m

@@ -161,7 +161,13 @@
 #pragma mark - Gesture Handling
 
 - (void)panned:(UIPanGestureRecognizer *)gestureRecognizer {
-  if ([self.editingControls selectedSegmentIndex] != UISegmentedControlNoSegment || self.isDrawing ){
+  BITImageAnnotation *annotationAtLocation = (BITImageAnnotation *)[self.view hitTest:[gestureRecognizer locationInView:self.view] withEvent:nil];
+  
+  if (![annotationAtLocation isKindOfClass:[BITImageAnnotation class]]){
+    annotationAtLocation = nil;
+  }
+  
+  if (([self.editingControls selectedSegmentIndex] != UISegmentedControlNoSegment || self.isDrawing) && !annotationAtLocation ){
     if (gestureRecognizer.state == UIGestureRecognizerStateBegan){
       self.currentAnnotation = [self annotationForCurrentMode];
       [self.objects addObject:self.currentAnnotation];
@@ -192,11 +198,14 @@
   } else {
     if (gestureRecognizer.state == UIGestureRecognizerStateBegan){
       // find and possibly move an existing annotation.
-      BITImageAnnotation *selectedAnnotation = (BITImageAnnotation *)[self.view hitTest:[gestureRecognizer locationInView:self.view] withEvent:nil];
+
       
-      if ([self.objects indexOfObject:selectedAnnotation] != NSNotFound){
+      if ([self.objects indexOfObject:annotationAtLocation] != NSNotFound){
-        self.currentAnnotation = selectedAnnotation;
+        self.currentAnnotation = annotationAtLocation;
+        [annotationAtLocation setSelected:YES];
       }
+      
+      
     } else if (gestureRecognizer.state == UIGestureRecognizerStateChanged && self.currentAnnotation){
       CGPoint delta = [gestureRecognizer translationInView:self.view];
       
@@ -213,6 +222,8 @@
       
     } else {
       self.currentAnnotation = nil;
+      [annotationAtLocation setSelected:NO];
+
     }
   }
 }