Fix position of small image

Author: Evgenii Neumerzhitckii

ImageScroll.xcodeproj/project.pbxproj

@@ -7,6 +7,7 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		2B7CB30B18972758009FD635 /* wallabi_small.jpg in Resources */ = {isa = PBXBuildFile; fileRef = 2B7CB30A18972758009FD635 /* wallabi_small.jpg */; };
 		2B97BEFF1748425C0094564B /* UIKit.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 2B97BEFE1748425C0094564B /* UIKit.framework */; };
 		2B97BF011748425C0094564B /* Foundation.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 2B97BF001748425C0094564B /* Foundation.framework */; };
 		2B97BF031748425C0094564B /* CoreGraphics.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 2B97BF021748425C0094564B /* CoreGraphics.framework */; };
@@ -22,6 +23,7 @@
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
+		2B7CB30A18972758009FD635 /* wallabi_small.jpg */ = {isa = PBXFileReference; lastKnownFileType = image.jpeg; path = wallabi_small.jpg; sourceTree = "<group>"; };
 		2B97BEFB1748425C0094564B /* ImageScroll.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = ImageScroll.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		2B97BEFE1748425C0094564B /* UIKit.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = UIKit.framework; path = System/Library/Frameworks/UIKit.framework; sourceTree = SDKROOT; };
 		2B97BF001748425C0094564B /* Foundation.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = Foundation.framework; path = System/Library/Frameworks/Foundation.framework; sourceTree = SDKROOT; };
@@ -85,6 +87,7 @@
 		2B97BF041748425C0094564B /* ImageScroll */ = {
 			isa = PBXGroup;
 			children = (
+				2B7CB30A18972758009FD635 /* wallabi_small.jpg */,
 				2B97BF211748476A0094564B /* wallabi.jpg */,
 				2B97BF161748425C0094564B /* MainStoryboard.storyboard */,
 				2B97BF191748425C0094564B /* ImageScrollViewController.h */,
@@ -165,6 +168,7 @@
 				2B97BF091748425C0094564B /* InfoPlist.strings in Resources */,
 				2B97BF111748425C0094564B /* Default.png in Resources */,
 				2B97BF131748425C0094564B /* [email protected] in Resources */,
+				2B7CB30B18972758009FD635 /* wallabi_small.jpg in Resources */,
 				2B97BF151748425C0094564B /* [email protected] in Resources */,
 				2B97BF181748425C0094564B /* MainStoryboard.storyboard in Resources */,
 				2B97BF221748476A0094564B /* wallabi.jpg in Resources */,

ImageScroll/ImageScrollViewController.m

@@ -34,6 +34,7 @@ - (void) viewWillAppear:(BOOL)animated {
 - (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration {
   [super willAnimateRotationToInterfaceOrientation:interfaceOrientation duration:duration];
   [self updateZoom];
+  if (self.scrollView.zoomScale == 1) self.scrollView.zoomScale = 1.0001;
 }
 
 - (void) scrollViewDidZoom:(UIScrollView *)scrollView {
@@ -60,14 +61,13 @@ - (void) updateConstraints {
   self.constraintBottom.constant = vPadding;
 }
 
-
 - (void) updateZoom {
   float minZoom = MIN(self.view.bounds.size.width / self.imageView.image.size.width,
                       self.view.bounds.size.height / self.imageView.image.size.height);
 
-  if (minZoom > 1) return;
+  if (minZoom > 1) minZoom = 1;
 
-  // Prevent excessive zoom out
+  // Prevent from zooming out too much
   self.scrollView.minimumZoomScale = minZoom;
 
   // Zoom to show as much image as possible