Stories: 16.8 Bug Fixes

Classes/Camera/CameraController.swift

@@ -1001,16 +1001,14 @@ open class CameraController: UIViewController, MediaClipsEditorDelegate, CameraP
             analyticsProvider?.logPreviewDismissed()
         }
         if settings.features.multipleExports {
-            self.dismiss(animated: true, completion: {
-                self.dismiss(animated: false)
-            })
+            delegate?.editorDismissed(self)
             showPreviewWithSegments([], selected: multiEditorViewController?.selected ?? 0)
         } else {
             performUIUpdate { [weak self] in
                 self?.dismiss(animated: true)
             }
+            delegate?.editorDismissed(self)
         }
-        delegate?.editorDismissed(self)
     }
 
     public func tagButtonPressed() {

Classes/Editor/EditorViewController.swift

@@ -132,7 +132,7 @@ public final class EditorViewController: UIViewController, MediaPlayerController
     }()
 
     private lazy var textController: EditorTextController = {
-        let textViewSettings = EditorTextView.Settings(fontSelectorUsesFont: settings.fontSelectorUsesFont)
+        let textViewSettings = EditorTextView.Settings(fontSelectorUsesFont: settings.fontSelectorUsesFont, resizesFonts: settings.features.resizesFonts)
         let settings = EditorTextController.Settings(textViewSettings: textViewSettings)
         let controller = EditorTextController(settings: settings)
         controller.delegate = self
@@ -393,6 +393,12 @@ public final class EditorViewController: UIViewController, MediaPlayerController
 
         startPlayerFromSegments()
     }
+
+    public override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+
+        player.pause()
+    }
 
     override public func viewDidLoad() {
         super.viewDidLoad()

Classes/Editor/MultiEditor/MultiEditorViewController.swift

@@ -122,6 +122,11 @@ class MultiEditorViewController: UIViewController {
         }
     }
 
+    override func viewDidAppear(_ animated: Bool) {
+        super.viewDidAppear(animated)
+        clipsController.select(index: selected ?? 0)
+    }
+
     func loadEditor(for index: Int) {
         let frame = frames[index]
         if let editor = delegate?.editor(segment: frame.segment, edit: frame.edit) {
@@ -208,8 +213,11 @@ extension MultiEditorViewController: MediaClipsEditorDelegate {
             frames.remove(at: index)
         }
 
-        migratedIndex = shift(index: selected ?? 0, indices: [index], edits: frames)
-        selected = newIndex(indices: [index], selected: selected, edits: frames)
+        let newSelection = newIndex(indices: [index], selected: selected, edits: frames)
+        if newSelection == selected {
+            selected = nil
+        }
+        selected = newSelection
         if selected == nil {
             dismissButtonPressed()
         }
@@ -224,12 +232,12 @@ extension MultiEditorViewController: MediaClipsEditorDelegate {
 
         let sortedindices = indices.sorted()
 
-        if let selected = selected, sortedindices.contains(selected) {
-            if let index = indices.first, edits.indices.contains(index) {
+        if let selected = selected, sortedindices.contains(selected) { // If the selection is contained in the set
+            if let index = indices.first, edits.indices.contains(index) { // Keep the same selection if it still exists.
                 return index
-            } else if let firstIndex = indices.first, firstIndex > edits.startIndex {
+            } else if let firstIndex = indices.first, firstIndex > edits.startIndex { // Item before if it does not.
                 nextIndex = edits.index(before: firstIndex)
-            } else if let lastIndex = sortedindices.last, lastIndex < edits.endIndex {
+            } else if let lastIndex = sortedindices.last, lastIndex < edits.endIndex { // Item after if prior item doesn't exist.
                 nextIndex = edits.index(after: lastIndex)
             }
         } else {
@@ -248,23 +256,40 @@ extension MultiEditorViewController: MediaClipsEditorDelegate {
         }
     }
 
+    func shift(index: Int, moves: [(origin: Int, destination: Int)], edits: [Any]) -> Int {
+        let indexMoves: [Int] = moves.map { origin, destination -> Int in
+            if (index < origin && index < destination) || (index > origin && index > destination) {
+                return 0
+            } else {
+                if destination >= index && origin < index {
+                    return -1
+                } else if destination <= index && origin > index {
+                    return 1
+                } else {
+                    return 0
+                }
+            }
+        }
+        return index + indexMoves.reduce(0, { $0 + $1 })
+    }
+
     func mediaClipWasMoved(from originIndex: Int, to destinationIndex: Int) {
         if let selected = selected {
             archive(index: selected)
         }
         frames.move(from: originIndex, to: destinationIndex)
 
-        let newIndex: Int
+        let selectedIndex: Int
         if selected == originIndex {
             // When moving the selected frame just move it to the destination index
-            newIndex = destinationIndex
+            selectedIndex = destinationIndex
         } else {
             // Otherwise calculate the shifted index value
-            newIndex = shift(index: selected ?? 0, indices: [originIndex], edits: frames)
+            selectedIndex = shift(index: selected ?? 0, moves: [(originIndex, destinationIndex)], edits: frames)
         }
 
-        migratedIndex = newIndex
-        selected = newIndex
+        migratedIndex = selectedIndex
+        selected = selectedIndex
     }
 
     func mediaClipWasSelected(at: Int) {

Classes/Editor/Text/EditorTextView.swift

@@ -196,6 +196,8 @@ final class EditorTextView: UIView, MainTextViewDelegate {
     struct Settings {
         /// The Font Selector button uses the current selected font (`font`) for its label
         let fontSelectorUsesFont: Bool
+        /// Enables/disables progressive font resizing
+        let resizesFonts: Bool
     }
 
     private let settings: Settings
@@ -251,6 +253,7 @@ final class EditorTextView: UIView, MainTextViewDelegate {
     private func setUpMainTextView() {
         mainTextView.accessibilityIdentifier = "Editor Text Main View"
         mainTextView.translatesAutoresizingMaskIntoConstraints = false
+        mainTextView.resizesFont = settings.resizesFonts
         addSubview(mainTextView)
 
         let topMargin = Constants.topMargin + Constants.confirmButtonSize

Classes/Editor/Text/MainTextView.swift

@@ -35,6 +35,8 @@ final class MainTextView: StylableTextView {
         resizeFont()
         centerContentVertically()
     }
+
+    var resizesFont: Bool = true
 
     override init() {
         super.init()
@@ -88,7 +90,7 @@ final class MainTextView: StylableTextView {
     }
 
     func resizeFont() {
-        guard !bounds.size.equalTo(.zero), let currentFont = font else { return }
+        guard resizesFont && !bounds.size.equalTo(.zero), let currentFont = font else { return }
         var bestFont = currentFont.withSize(Constants.fontSizes[0])
 
         for fontSize in Constants.fontSizes {

Classes/MediaClips/MediaClipsCollectionCell.swift

@@ -73,6 +73,7 @@ final class MediaClipsCollectionCell: UICollectionViewCell {
     override func prepareForReuse() {
         super.prepareForReuse()
         clipImage.image = .none
+        clipView.layer.borderWidth = MediaClipsCollectionCellConstants.borderWidth
     }
 
     override var isSelected: Bool {

Classes/MediaClips/MediaClipsCollectionController.swift

@@ -69,7 +69,20 @@ final class MediaClipsCollectionController: UIViewController, UICollectionViewDe
     }
 
     func select(index: Int) {
-        mediaClipsCollectionView.collectionView.selectItem(at: IndexPath(item: index, section: 0), animated: false, scrollPosition: .left)
+        let selectedIndexPath = IndexPath(item: index, section: 0)
+        guard mediaClipsCollectionView.collectionView.indexPathsForSelectedItems?.contains(selectedIndexPath) == false else {
+            return
+        }
+        mediaClipsCollectionView.collectionView.indexPathsForSelectedItems?.forEach({ indexPath in
+            mediaClipsCollectionView.collectionView.deselectItem(at: indexPath, animated: false)
+        })
+        let scrollPosition: UICollectionView.ScrollPosition
+        if mediaClipsCollectionView.collectionView.indexPathsForVisibleItems.contains(selectedIndexPath) {
+            scrollPosition = []
+        } else {
+            scrollPosition = .left
+        }
+        mediaClipsCollectionView.collectionView.selectItem(at: selectedIndexPath, animated: false, scrollPosition: scrollPosition)
     }
 
     func removeAllClips() {

Classes/MediaClips/MediaClipsCollectionView.swift

@@ -72,7 +72,7 @@ private func createCollectionView() -> UICollectionView {
     let layout = UICollectionViewFlowLayout()
     configureCollectionLayout(layout: layout)
 
-    let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
+    let collectionView = InteractiveMovementsCrashFixCollectionView(frame: .zero, collectionViewLayout: layout)
     collectionView.accessibilityIdentifier = "Media Clips Collection"
     collectionView.backgroundColor = .clear
     configureCollection(collectionView: collectionView)
@@ -99,3 +99,12 @@ private func configureCollection(collectionView: UICollectionView) {
     collectionView.dragInteractionEnabled = true
     collectionView.reorderingCadence = .immediate
 }
+
+// Fixes a crash in `_UIDragFeedbackGenerator`: https://github.com/tumblr/kanvas-ios/issues/98
+private class InteractiveMovementsCrashFixCollectionView: UICollectionView {
+    // See https://stackoverflow.com/questions/51553223/handling-multiple-uicollectionview-interactivemovements-crash-uidragsnapping for more details
+    override func cancelInteractiveMovement() {
+        super.cancelInteractiveMovement()
+        super.endInteractiveMovement() // animation will be ended early here
+    }
+}

Classes/Settings/CameraSettings.swift

@@ -172,6 +172,10 @@ public struct CameraFeatures {
     /// This scales the imported media to fill the screen by setting the `mediaContentMode` to `scaleAspectFill` on the pixel buffer views.
     /// The buffer views will resize their contents during drawing to fill the screen.
     public var scaleMediaToFill: Bool = false
+
+    /// Resizes Text View Fonts
+    /// Whether or not to resize the text view fonts progressively to fit withinthe editing area.
+    public var resizesFonts: Bool = true
 }
 
 // A class that defines the settings for the Kanvas Camera

Kanvas.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name         = "Kanvas"
-  spec.version      = "1.2.3"
+  spec.version      = "1.2.4"
   spec.summary      = "A custom camera built for iOS."
   spec.homepage     = "https://github.com/tumblr/kanvas-ios"
   spec.license      = "MPLv2"

KanvasExample/KanvasExampleTests/Editor/MultiEditor/MultiEditorControllerTests.swift

@@ -98,6 +98,45 @@ class MultiEditorControllerTests: FBSnapshotTestCase {
         _ = viewController.shouldExport()
         wait(for: [expectation], timeout: 2)
     }
+
+    func testDeletedIndex() {
+        let segments = getPhotoSegment() + getPhotoSegment() + getPhotoSegment()
+        let inFrames = frames(segments: segments)
+        let vc = newViewController(frames: inFrames)
+
+        let frameMovedAhead = vc.shift(index: 2, moves: [(1,0)], edits: inFrames)
+        XCTAssertEqual(frameMovedAhead, 2, "Selection shouldn't change")
+        let frameMovedBehind = vc.shift(index: 0, moves: [(1,2)], edits: inFrames)
+        XCTAssertEqual(frameMovedBehind, 0, "Selection shouldn't change")
+        let frameMovedInFront = vc.shift(index: 1, moves: [(0,2)], edits: inFrames)
+        XCTAssertEqual(frameMovedInFront, 0, "Selection should be moved back")
+        let frameMovedInBack = vc.shift(index: 1, moves: [(2,0)], edits: inFrames)
+        XCTAssertEqual(frameMovedInBack, 2, "Selection should be moved forward")
+    }
+
+    func testRemovedIndex() {
+        let segments = getPhotoSegment() + getPhotoSegment() + getPhotoSegment()
+        var inFrames = frames(segments: segments)
+        let vc = newViewController(frames: inFrames)
+
+        inFrames.removeLast(2)
+        let deletedLast = vc.newIndex(indices: [2], selected: 2, edits: inFrames)
+        XCTAssertEqual(deletedLast, 1, "Selection should move back")
+        inFrames = inFrames + frames(segments: getPhotoSegment())
+        inFrames.removeFirst(1)
+        let deletedFirst = vc.newIndex(indices: [0], selected: 0, edits: inFrames)
+        XCTAssertEqual(deletedFirst, 0, "Selection should not move")
+        inFrames = frames(segments: getPhotoSegment()) + inFrames
+
+        inFrames.removeFirst(1)
+        let deletedInFront = vc.newIndex(indices: [0], selected: 1, edits: inFrames)
+        XCTAssertEqual(deletedInFront, 0, "Selection should be moved back")
+        inFrames = frames(segments: getPhotoSegment()) + inFrames
+
+        inFrames.removeLast(2)
+        let deletedInBack = vc.newIndex(indices: [1], selected: 0, edits: inFrames)
+        XCTAssertEqual(deletedInBack, 0, "Selection shouldn't change")
+    }
 }
 
 final class MultiEditorControllerDelegateStub: MultiEditorComposerDelegate {
@@ -183,4 +222,5 @@ final class MultiEditorControllerDelegateStub: MultiEditorComposerDelegate {
     }
 
 
+
 }

KanvasExample/KanvasExampleTests/Editor/Text/EditorTextControllerTests.swift

@@ -19,7 +19,7 @@ final class EditorTextControllerTests: FBSnapshotTestCase {
     }
 
     func newViewController() -> EditorTextController {
-        let editorSettings = EditorTextController.Settings(textViewSettings: EditorTextView.Settings(fontSelectorUsesFont: false))
+        let editorSettings = EditorTextController.Settings(textViewSettings: EditorTextView.Settings(fontSelectorUsesFont: false, resizesFonts: true))
         let controller = EditorTextController(settings: editorSettings)
         controller.view.frame = CGRect(x: 0, y: 0, width: 320, height: 480)
         controller.view.setNeedsDisplay()

KanvasExample/KanvasExampleTests/Editor/Text/EditorTextViewTests.swift

@@ -20,7 +20,7 @@ final class EditorTextViewTests: FBSnapshotTestCase {
     }
 
     func newView() -> EditorTextView {
-        let textViewSettings = EditorTextView.Settings(fontSelectorUsesFont: false)
+        let textViewSettings = EditorTextView.Settings(fontSelectorUsesFont: false, resizesFonts: true)
         let view = EditorTextView(settings: textViewSettings)
         view.frame = CGRect(x: 0, y: 0, width: 320, height: 480)
         return view

KanvasExample/Podfile.lock

@@ -4,7 +4,7 @@ PODS:
   - FBSnapshotTestCase/Core (2.1.4)
   - FBSnapshotTestCase/SwiftSupport (2.1.4):
     - FBSnapshotTestCase/Core
-  - Kanvas (1.2.2)
+  - Kanvas (1.2.3)
 
 DEPENDENCIES:
   - FBSnapshotTestCase (= 2.1.4)
@@ -20,7 +20,7 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   FBSnapshotTestCase: 094f9f314decbabe373b87cc339bea235a63e07a
-  Kanvas: 412d5b7502809153a6acac98f57923ad5d0251f8
+  Kanvas: 97860c54ea07119c533a80d951ee8c1b39d8f386
 
 PODFILE CHECKSUM: 14b28dd726149c0d01dba9154d5bb095d9ba6a18