Use checkmark to indicate verification status in conversation view header subtitle, fingerprint view, and in conversation settings row icon.

// FREEBIE

Signal/Images.xcassets/table_ic_verify.imageset/Contents.json

@@ -2,17 +2,17 @@
   "images" : [
     {
       "idiom" : "universal",
-      "filename" : "table_ic_lock_outline@1x.png",
+      "filename" : "table_ic_verify@1x.png",
       "scale" : "1x"
     },
     {
       "idiom" : "universal",
-      "filename" : "table_ic_lock_outline@2x.png",
+      "filename" : "table_ic_verify@2x.png",
       "scale" : "2x"
     },
     {
       "idiom" : "universal",
-      "filename" : "table_ic_lock_outline@3x.png",
+      "filename" : "table_ic_verify@3x.png",
       "scale" : "3x"
     }
   ],

Signal/src/ViewControllers/ConversationView/MessagesViewController.m

@@ -72,6 +72,7 @@
 #import <SignalServiceKit/OWSAttachmentsProcessor.h>
 #import <SignalServiceKit/OWSBlockingManager.h>
 #import <SignalServiceKit/OWSDisappearingMessagesConfiguration.h>
+#import <SignalServiceKit/OWSIdentityManager.h>
 #import <SignalServiceKit/OWSMessageSender.h>
 #import <SignalServiceKit/OWSUnknownContactBlockOfferMessage.h>
 #import <SignalServiceKit/OWSVerificationStateChangeMessage.h>
@@ -285,6 +286,10 @@ typedef enum : NSUInteger {
                                              selector:@selector(blockedPhoneNumbersDidChange:)
                                                  name:kNSNotificationName_BlockedPhoneNumbersDidChange
                                                object:nil];
+    [[NSNotificationCenter defaultCenter] addObserver:self
+                                             selector:@selector(identityStateDidChange:)
+                                                 name:kNSNotificationName_IdentityStateDidChange
+                                               object:nil];
 }
 
 - (void)blockedPhoneNumbersDidChange:(id)notification
@@ -294,6 +299,13 @@ typedef enum : NSUInteger {
     });
 }
 
+- (void)identityStateDidChange:(NSNotification *)notification
+{
+    OWSAssert([NSThread isMainThread]);
+
+    [self updateNavigationBarSubtitleLabel];
+}
+
 - (void)peekSetup
 {
     _peek = YES;
@@ -1078,6 +1090,7 @@ typedef enum : NSUInteger {
 - (void)updateNavigationBarSubtitleLabel
 {
     NSMutableAttributedString *subtitleText = [NSMutableAttributedString new];
+
     if (self.thread.isMuted) {
         // Show a "mute" icon before the navigation bar subtitle if this thread is muted.
         [subtitleText
@@ -1088,6 +1101,26 @@ typedef enum : NSUInteger {
                                                NSForegroundColorAttributeName : [UIColor colorWithWhite:0.9f alpha:1.f],
                                            }]];
     }
+
+    BOOL isVerified = YES;
+    for (NSString *recipientId in self.thread.recipientIdentifiers) {
+        if ([[OWSIdentityManager sharedManager] verificationStateForRecipientId:recipientId]
+            != OWSVerificationStateVerified) {
+            isVerified = NO;
+            break;
+        }
+    }
+    if (isVerified) {
+        // Show a "checkmark" icon before the navigation bar subtitle if this thread is verified.
+        [subtitleText
+            appendAttributedString:[[NSAttributedString alloc]
+                                       initWithString:@"\uf00c "
+                                           attributes:@{
+                                               NSFontAttributeName : [UIFont ows_fontAwesomeFont:10.f],
+                                               NSForegroundColorAttributeName : [UIColor colorWithWhite:0.9f alpha:1.f],
+                                           }]];
+    }
+
     [subtitleText
         appendAttributedString:[[NSAttributedString alloc]
                                    initWithString:NSLocalizedString(@"MESSAGES_VIEW_TITLE_SUBTITLE",

Signal/src/ViewControllers/FingerprintViewController.m

@@ -256,7 +256,7 @@ typedef void (^CustomLayoutBlock)();
 
     OWSBezierPathView *fingerprintCircle = [OWSBezierPathView new];
     [fingerprintCircle setConfigureShapeLayerBlock:^(CAShapeLayer *layer, CGRect bounds) {
-        layer.fillColor = [UIColor colorWithWhite:0.8f alpha:1.f].CGColor;
+        layer.fillColor = [UIColor colorWithWhite:0.9f alpha:1.f].CGColor;
         CGFloat size = MIN(bounds.size.width, bounds.size.height);
         CGRect circle = CGRectMake((bounds.size.width - size) * 0.5f, (bounds.size.height - size) * 0.5f, size, size);
         layer.path = [UIBezierPath bezierPathWithOvalInRect:circle].CGPath;
@@ -275,7 +275,7 @@ typedef void (^CustomLayoutBlock)();
     UILabel *scanLabel = [UILabel new];
     scanLabel.text = NSLocalizedString(@"PRIVACY_TAP_TO_SCAN", @"Button that shows the 'scan with camera' view.");
     scanLabel.font = [UIFont ows_mediumFontWithSize:ScaleFromIPhone5To7Plus(14.f, 16.f)];
-    scanLabel.textColor = [UIColor whiteColor];
+    scanLabel.textColor = [UIColor colorWithWhite:0.15f alpha:1.f];
     [scanLabel sizeToFit];
     [fingerprintView addSubview:scanLabel];
 
@@ -315,20 +315,53 @@ typedef void (^CustomLayoutBlock)();
     BOOL isVerified = [[OWSIdentityManager sharedManager] verificationStateForRecipientId:self.recipientId]
         == OWSVerificationStateVerified;
 
-    self.verificationStateLabel.text = [NSString
-        stringWithFormat:
-            (isVerified
-                    ? NSLocalizedString(@"PRIVACY_IDENTITY_IS_VERIFIED_FORMAT",
-                          @"Label indicating that the user is verified. Embeds {{the user's name or phone number}}.")
-                    : NSLocalizedString(@"PRIVACY_IDENTITY_IS_NOT_VERIFIED_FORMAT",
-                          @"Label indicating that the user is not verified. Embeds {{the user's name or phone "
-                          @"number}}.")),
-        self.contactName];
-    self.verifyUnverifyButtonLabel.text
-        = (isVerified ? NSLocalizedString(@"PRIVACY_UNVERIFY_BUTTON",
-                            @"Button that lets user mark another user's identity as unverified.")
-                      : NSLocalizedString(@"PRIVACY_VERIFY_BUTTON",
-                            @"Button that lets user mark another user's identity as verified."));
+    if (isVerified) {
+        NSMutableAttributedString *labelText = [NSMutableAttributedString new];
+
+        if (isVerified) {
+            // Show a "checkmark" if this user is verified.
+            [labelText
+                appendAttributedString:[[NSAttributedString alloc]
+                                           initWithString:@"\uf00c "
+                                               attributes:@{
+                                                   NSFontAttributeName : [UIFont
+                                                       ows_fontAwesomeFont:self.verificationStateLabel.font.pointSize],
+                                               }]];
+        }
+
+        [labelText
+            appendAttributedString:
+                [[NSAttributedString alloc]
+                    initWithString:[NSString stringWithFormat:NSLocalizedString(@"PRIVACY_IDENTITY_IS_VERIFIED_FORMAT",
+                                                                  @"Label indicating that the user is verified. Embeds "
+                                                                  @"{{the user's name or phone number}}."),
+                                             self.contactName]]];
+        self.verificationStateLabel.attributedText = labelText;
+
+        self.verifyUnverifyButtonLabel.text = NSLocalizedString(
+            @"PRIVACY_UNVERIFY_BUTTON", @"Button that lets user mark another user's identity as unverified.");
+    } else {
+        self.verificationStateLabel.text = [NSString
+            stringWithFormat:NSLocalizedString(@"PRIVACY_IDENTITY_IS_NOT_VERIFIED_FORMAT",
+                                 @"Label indicating that the user is not verified. Embeds {{the user's name or phone "
+                                 @"number}}."),
+            self.contactName];
+
+        NSMutableAttributedString *buttonText = [NSMutableAttributedString new];
+        // Show a "checkmark" if this user is not verified.
+        [buttonText
+            appendAttributedString:[[NSAttributedString alloc]
+                                       initWithString:@"\uf00c  "
+                                           attributes:@{
+                                               NSFontAttributeName : [UIFont
+                                                   ows_fontAwesomeFont:self.verifyUnverifyButtonLabel.font.pointSize],
+                                           }]];
+        [buttonText appendAttributedString:
+                        [[NSAttributedString alloc]
+                            initWithString:NSLocalizedString(@"PRIVACY_VERIFY_BUTTON",
+                                               @"Button that lets user mark another user's identity as verified.")]];
+        self.verifyUnverifyButtonLabel.attributedText = buttonText;
+    }
 
     [self.view setNeedsLayout];
 }

Signal/src/ViewControllers/OWSConversationSettingsTableViewController.m

@@ -215,7 +215,7 @@ NS_ASSUME_NONNULL_BEGIN
             addItem:[OWSTableItem itemWithCustomCellBlock:^{
                 return [weakSelf disclosureCellWithName:NSLocalizedString(@"VERIFY_PRIVACY",
                                                             @"table cell label in conversation settings")
-                                               iconName:@"table_ic_lock_outline"];
+                                               iconName:@"table_ic_verify"];
             }
                         actionBlock:^{
                             OWSConversationSettingsTableViewController *strongSelf = weakSelf;