per design: MessageStatus 1pt below baseline

Signal.xcodeproj/project.pbxproj

@@ -415,6 +415,7 @@
 		45FBC5C81DF8575700E9B410 /* CallKitCallManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45FBC59A1DF8575700E9B410 /* CallKitCallManager.swift */; };
 		45FBC5D11DF8592E00E9B410 /* SignalCall.swift in Sources */ = {isa = PBXBuildFile; fileRef = 45FBC5D01DF8592E00E9B410 /* SignalCall.swift */; };
 		4AC4EA13C8A444455DAB351F /* Pods_SignalMessaging.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 264242150E87D10A357DB07B /* Pods_SignalMessaging.framework */; };
+		4C11AA5020FD59C700351FBD /* MessageStatusView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C11AA4F20FD59C700351FBD /* MessageStatusView.swift */; };
 		4C13C9F620E57BA30089A98B /* ColorPickerViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C13C9F520E57BA30089A98B /* ColorPickerViewController.swift */; };
 		4C20B2B720CA0034001BAC90 /* ThreadViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4542DF51208B82E9007B4E76 /* ThreadViewModel.swift */; };
 		4C20B2B920CA10DE001BAC90 /* ConversationSearchViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 4C20B2B820CA10DE001BAC90 /* ConversationSearchViewController.swift */; };
@@ -1081,6 +1082,7 @@
 		45FBC59A1DF8575700E9B410 /* CallKitCallManager.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = CallKitCallManager.swift; sourceTree = "<group>"; };
 		45FBC5D01DF8592E00E9B410 /* SignalCall.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = SignalCall.swift; sourceTree = "<group>"; };
 		45FDA43420A4D22700396358 /* OWSNavigationBar.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OWSNavigationBar.swift; sourceTree = "<group>"; };
+		4C11AA4F20FD59C700351FBD /* MessageStatusView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MessageStatusView.swift; sourceTree = "<group>"; };
 		4C13C9F520E57BA30089A98B /* ColorPickerViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ColorPickerViewController.swift; sourceTree = "<group>"; };
 		4C20B2B820CA10DE001BAC90 /* ConversationSearchViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ConversationSearchViewController.swift; sourceTree = "<group>"; };
 		4C4AEC4420EC343B0020E72B /* DismissableTextField.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = DismissableTextField.swift; sourceTree = "<group>"; };
@@ -1431,6 +1433,7 @@
 				34386A4F207D0C01009F5D9C /* HomeViewController.h */,
 				34386A4D207D0C01009F5D9C /* HomeViewController.m */,
 				4C20B2B820CA10DE001BAC90 /* ConversationSearchViewController.swift */,
+				4C11AA4F20FD59C700351FBD /* MessageStatusView.swift */,
 			);
 			path = HomeView;
 			sourceTree = "<group>";
@@ -3365,6 +3368,7 @@
 				34D2CCDF206939B400CB1A14 /* DebugUIMessagesAction.m in Sources */,
 				340FC8AC204DAC8D007AEB0F /* PrivacySettingsTableViewController.m in Sources */,
 				340FC8C5204DE223007AEB0F /* DebugUIBackup.m in Sources */,
+				4C11AA5020FD59C700351FBD /* MessageStatusView.swift in Sources */,
 				340FC8AE204DAC8D007AEB0F /* OWSSoundSettingsViewController.m in Sources */,
 				4579431E1E7C8CE9008ED0C0 /* Pastelog.m in Sources */,
 				340FC8B0204DAC8D007AEB0F /* AddToBlockListViewController.m in Sources */,

Signal/src/ViewControllers/HomeView/HomeViewCell.m

@@ -22,7 +22,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic) UILabel *nameLabel;
 @property (nonatomic) UILabel *snippetLabel;
 @property (nonatomic) UILabel *dateTimeLabel;
-@property (nonatomic) UIImageView *messageStatusView;
+@property (nonatomic) MessageStatusView *messageStatusView;
 
 @property (nonatomic) UIView *unreadBadge;
 @property (nonatomic) UILabel *unreadLabel;
@@ -93,7 +93,7 @@ NS_ASSUME_NONNULL_BEGIN
     [self.dateTimeLabel setContentHuggingHorizontalHigh];
     [self.dateTimeLabel setCompressionResistanceHorizontalHigh];
 
-    self.messageStatusView = [UIImageView new];
+    self.messageStatusView = [MessageStatusView new];
     [self.messageStatusView setContentHuggingHorizontalHigh];
     [self.messageStatusView setCompressionResistanceHorizontalHigh];
 

Signal/src/ViewControllers/HomeView/MessageStatusView.swift

@@ -0,0 +1,52 @@
+//
+//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//
+
+import Foundation
+
+@objc
+public class MessageStatusView: UIView {
+
+    private let imageView: UIImageView
+    private let lastBaselineView: UIView
+
+    // MessageStatusView is aligned 1pt below it's baseline.
+    private let kBaselineOverhang: CGFloat = 1
+
+    @objc
+    public var image: UIImage? {
+        get {
+            return imageView.image
+        }
+        set {
+            imageView.image = newValue
+        }
+    }
+
+    public override init(frame: CGRect) {
+        self.imageView = UIImageView()
+        self.lastBaselineView = UIView()
+
+        super.init(frame: frame)
+
+        self.addSubview(imageView)
+        self.addSubview(lastBaselineView)
+
+        imageView.setCompressionResistanceHigh()
+        imageView.setContentHuggingHigh()
+        imageView.autoPinEdgesToSuperviewEdges()
+
+        lastBaselineView.autoSetDimension(.height, toSize: 1)
+        lastBaselineView.autoPinEdge(toSuperviewEdge: .left)
+        lastBaselineView.autoPinEdge(toSuperviewEdge: .right)
+        lastBaselineView.autoPinEdge(toSuperviewEdge: .bottom, withInset: kBaselineOverhang)
+    }
+
+    public override var forLastBaselineLayout: UIView {
+        return self.lastBaselineView
+    }
+
+    required public init?(coder aDecoder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+}