fix: fix orientation issues on iPad

Example/CustomizedCropToolbar.swift

@@ -59,7 +59,7 @@ class CustomizedCropToolbar: UIView, CropToolbarProtocol {
     }
 
     func adjustLayoutWhenOrientationChange() {
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             stackView?.axis = .horizontal
         } else {
             stackView?.axis = .vertical
@@ -69,7 +69,7 @@ class CustomizedCropToolbar: UIView, CropToolbarProtocol {
     public override var intrinsicContentSize: CGSize {
         let superSize = super.intrinsicContentSize
 
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             return CGSize(width: superSize.width, height: config.heightForVerticalOrientation)
         } else {
             return CGSize(width: config.widthForHorizontalOrientation, height: superSize.height)

Example/CustomizedCropToolbarWithoutList.swift

@@ -73,15 +73,15 @@ class CustomizedCropToolbarWithoutList: UIView, CropToolbarProtocol {
     public override var intrinsicContentSize: CGSize {
         let superSize = super.intrinsicContentSize
 
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             return CGSize(width: superSize.width, height: config.heightForVerticalOrientation)
         } else {
             return CGSize(width: config.widthForHorizontalOrientation, height: superSize.height)
         }
     }
 
     func adjustLayoutWhenOrientationChange() {
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             stackView?.axis = .horizontal
         } else {
             stackView?.axis = .vertical

Sources/Mantis/CropView/CropView.swift

@@ -269,7 +269,7 @@ class CropView: UIView {
     private func adaptAngleDashboardToCropBox() {
         guard let rotationDial = rotationDial else { return }
 
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             rotationDial.transform = CGAffineTransform(rotationAngle: 0)
             rotationDial.frame.origin.x = cropAuxiliaryIndicatorView.frame.origin.x +
             (cropAuxiliaryIndicatorView.frame.width - rotationDial.frame.width) / 2
@@ -404,7 +404,7 @@ extension CropView {
         let rect = self.bounds
         var contentRect = CGRect.zero
 
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             contentRect.origin.x = rect.origin.x + cropViewPadding
             contentRect.origin.y = rect.origin.y + cropViewPadding
 
@@ -753,12 +753,12 @@ extension CropView: CropViewProtocol {
         }
     }
 
-    func prepareForDeviceRotation() {
+    func prepareForViewWillTransition() {
         viewModel.setDegree90RotatingStatus()
         saveAnchorPoints()
     }
 
-    func handleDeviceRotated() {
+    func handleViewWillTransition() {
         viewModel.resetCropFrame(by: getInitialCropBoxRect())
 
         cropWorkbenchView.transform = CGAffineTransform(scaleX: 1, y: 1)

Sources/Mantis/CropViewController/CropToolbar.swift

@@ -146,7 +146,7 @@ public class CropToolbar: UIView, CropToolbarProtocol {
     public override var intrinsicContentSize: CGSize {
         let superSize = super.intrinsicContentSize
 
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             return CGSize(width: superSize.width, height: config.heightForVerticalOrientation)
         } else {
             return CGSize(width: config.widthForHorizontalOrientation, height: superSize.height)
@@ -158,7 +158,7 @@ public class CropToolbar: UIView, CropToolbarProtocol {
     }
 
     public func adjustLayoutWhenOrientationChange() {
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             optionButtonStackView?.axis = .horizontal
             optionButtonStackView?.layoutMargins = UIEdgeInsets(top: 0, left: 20, bottom: 0, right: 20)
         } else {

Sources/Mantis/CropViewController/CropViewController.swift

@@ -28,8 +28,6 @@ open class CropViewController: UIViewController {
     public weak var delegate: CropViewControllerDelegate?
     public var config = Mantis.Config()
 
-    private var orientation: UIInterfaceOrientation = .unknown
-
     var cropView: CropViewProtocol!
     var cropToolbar: CropToolbarProtocol!
 
@@ -153,19 +151,17 @@ open class CropViewController: UIViewController {
         return [.top, .bottom]
     }
 
+    // It is triggered by (1) - device rotation or (2) - split view operations on iPad
     public override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
         super.viewWillTransition(to: size, with: coordinator)
-        cropView.prepareForDeviceRotation()
-        handleDeviceRotated()
-    }    
+        cropView.prepareForViewWillTransition()
+        handleViewWillTransition()
+    }
 
-    @objc func handleDeviceRotated() {
+    @objc func handleViewWillTransition() {
         let currentOrientation = Orientation.interfaceOrientation
 
         guard currentOrientation != .unknown else { return }
-        guard currentOrientation != orientation else { return }
-
-        orientation = currentOrientation
 
         if UIDevice.current.userInterfaceIdiom == .phone
             && currentOrientation == .portraitUpsideDown {
@@ -180,7 +176,7 @@ open class CropViewController: UIViewController {
         // So delay the execution to make sure handleRotate runs after the final
         // viewDidLayoutSubviews
         DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) { [weak self] in
-            self?.cropView.handleDeviceRotated()
+            self?.cropView.handleViewWillTransition()
         }
     }    
 
@@ -321,7 +317,7 @@ extension CropViewController {
     }
 
     private func setStackViewAxis() {
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             stackView?.axis = .vertical
         } else if Orientation.isLandscape {
             stackView?.axis = .horizontal
@@ -338,7 +334,7 @@ extension CropViewController {
         stackView?.removeArrangedSubview(cropStackView)
         stackView?.removeArrangedSubview(cropToolbar)
 
-        if Orientation.isPortrait || Orientation.isLandscapeRight {
+        if Orientation.treatAsPortrait || Orientation.isLandscapeRight {
             stackView?.addArrangedSubview(cropStackView)
             stackView?.addArrangedSubview(cropToolbar)
         } else if Orientation.isLandscapeLeft {

Sources/Mantis/Helpers/Orientation.swift

@@ -14,50 +14,42 @@ public struct Orientation {
             return application.statusBarOrientation
         }
     }
-
-    static var deviceOrientation: UIDeviceOrientation? {
-        device.orientation.isValidInterfaceOrientation
-        ? device.orientation
-        : nil
-    }
-
+
     private static var application: UIApplication { .shared }
-    private static var device: UIDevice { .current }
 
     /**
-     Whether or not the device is in landscape orientation.
+     Whether or not the interface is in landscape orientation.
      */
     public static var isLandscape: Bool {
-        device.orientation.isValidInterfaceOrientation
-        ? device.orientation.isLandscape
-        : interfaceOrientation.isLandscape
-
+        interfaceOrientation.isLandscape
     }
 
     /**
-     Whether or not the device is in landscape left orientation.
+     Whether or not the interface is in landscape left orientation.
      */
     public static var isLandscapeLeft: Bool {
-        device.orientation.isValidInterfaceOrientation
-        ? device.orientation == .landscapeLeft
-        : interfaceOrientation == .landscapeLeft
+        interfaceOrientation == .landscapeLeft
     }
 
     /**
-     Whether or not the device is in landscape right orientation.
+     Whether or not the interface is in landscape right orientation.
      */
     public static var isLandscapeRight: Bool {
-        device.orientation.isValidInterfaceOrientation
-        ? device.orientation == .landscapeRight
-        : interfaceOrientation == .landscapeRight
+        interfaceOrientation == .landscapeRight
     }
 
     /**
-     Whether or not the device is in portrait orientation.
+     Whether or not the interface is in portrait orientation.
      */
     public static var isPortrait: Bool {
-        device.orientation.isValidInterfaceOrientation
-        ? device.orientation.isPortrait
-        : interfaceOrientation.isPortrait
+        interfaceOrientation.isPortrait
+    }
+
+    /**
+     Whether or not the interface is treated as in portrait orientation.
+     For devices other than iPhone, they have enough space for landscape orientation, so we can always use portait layout for them.
+     */
+    public static var treatAsPortrait: Bool {
+        interfaceOrientation.isPortrait || UIDevice.current.userInterfaceIdiom != .phone
     }
 }

Sources/Mantis/Protocols/CropToolbarProtocol.swift

@@ -76,7 +76,7 @@ public extension CropToolbarProtocol {
         let highPriority: Float = 10000
         let lowPriority: Float = 1
 
-        if Orientation.isPortrait {
+        if Orientation.treatAsPortrait {
             setContentHuggingPriority(UILayoutPriority(highPriority), for: .vertical)
             setContentCompressionResistancePriority(UILayoutPriority(highPriority), for: .vertical)
             setContentHuggingPriority(UILayoutPriority(lowPriority), for: .horizontal)

Sources/Mantis/Protocols/CropViewProtocol.swift

@@ -18,8 +18,8 @@ protocol CropViewProtocol: UIView {
     func getRatioType(byImageIsOriginalisHorizontal isHorizontal: Bool) -> RatioType
     func getImageHorizontalToVerticalRatio() -> Double
     func resetComponents()
-    func prepareForDeviceRotation()
-    func handleDeviceRotated()
+    func prepareForViewWillTransition()
+    func handleViewWillTransition()
     func setFixedRatio(_ ratio: Double, zoom: Bool, presetFixedRatioType: PresetFixedRatioType)
     func rotateBy90(withRotateType rotateType: RotateBy90DegreeType, completion: @escaping () -> Void)
     func handleAlterCropper90Degree()