Use symbols font to show icons in system messages in chat.

Signal/ConversationView/Components/CVComponentSystemMessage.swift

@@ -756,13 +756,8 @@ extension CVComponentSystemMessage {
         {
 
             for (index, updateItem) in displayableGroupUpdates.enumerated() {
-                labelText.appendTemplatedImage(
-                    named: Self.iconName(displayableGroupUpdateItem: updateItem),
-                    font: font,
-                    heightReference: ImageAttachmentHeightReference.lineHeight,
-                )
-
-                labelText.append("  ", attributes: [:])
+                labelText.append(Self.symbol(forDisplayableGroupUpdateItem: updateItem).attributedString(dynamicTypeBaseSize: font.pointSize))
+                labelText.append(" ", attributes: [:])
                 labelText.append(updateItem.localizedText)
 
                 let isLast = index == displayableGroupUpdates.count - 1
@@ -778,13 +773,9 @@ extension CVComponentSystemMessage {
             return labelText
         }
 
-        if let icon = icon(forInteraction: interaction) {
-            labelText.appendImage(
-                icon.withRenderingMode(.alwaysTemplate),
-                font: font,
-                heightReference: ImageAttachmentHeightReference.lineHeight,
-            )
-            labelText.append("  ", attributes: [:])
+        if let symbol = symbol(forInteraction: interaction) {
+            labelText.append(symbol.attributedString(dynamicTypeBaseSize: font.pointSize))
+            labelText.append(" ", attributes: [:])
         }
 
         let systemMessageText = Self.systemMessageText(
@@ -865,16 +856,16 @@ extension CVComponentSystemMessage {
         }
     }
 
-    private static func icon(forInteraction interaction: TSInteraction) -> UIImage? {
+    private static func symbol(forInteraction interaction: TSInteraction) -> SignalSymbol? {
         if let errorMessage = interaction as? TSErrorMessage {
             switch errorMessage.errorType {
             case .nonBlockingIdentityChange,
                  .wrongTrustedIdentityKey:
-                return Theme.iconImage(.safetyNumber16)
+                return .safetyNumber
             case .sessionRefresh:
-                return Theme.iconImage(.refresh16)
+                return .refresh
             case .decryptionFailure:
-                return Theme.iconImage(.error16)
+                return .error
             case .invalidKeyException,
                  .missingKeyId,
                  .noSession,
@@ -898,93 +889,93 @@ extension CVComponentSystemMessage {
                 return nil
             case .typeGroupUpdate,
                  .typeGroupQuit:
-                return Theme.iconImage(.group16)
+                return .group
             case .unknownProtocolVersion:
                 guard let message = interaction as? OWSUnknownProtocolVersionMessage else {
                     owsFailDebug("Invalid interaction.")
                     return nil
                 }
-                return Theme.iconImage(message.isProtocolVersionUnknown ? .error16 : .check16)
+                return message.isProtocolVersionUnknown ? .error : .checkmark
             case .typeDisappearingMessagesUpdate:
                 guard let message = interaction as? OWSDisappearingConfigurationUpdateInfoMessage else {
                     owsFailDebug("Invalid interaction.")
                     return nil
                 }
                 let areDisappearingMessagesEnabled = message.configurationIsEnabled
-                return Theme.iconImage(areDisappearingMessagesEnabled ? .timer16 : .timerDisabled16)
+                return areDisappearingMessagesEnabled ? .timer : .timerSlash
             case .verificationStateChange:
                 guard let message = interaction as? OWSVerificationStateChangeMessage else {
                     owsFailDebug("Invalid interaction.")
                     return nil
                 }
                 if message.isVerified() {
-                    return Theme.iconImage(.safetyNumber16)
+                    return .safetyNumber
                 }
                 return nil
             case .userJoinedSignal:
-                return Theme.iconImage(.heart16)
+                return .heart
             case .syncedThread:
-                return Theme.iconImage(.info16)
+                return .info
             case .profileUpdate:
-                return Theme.iconImage(.profile16)
+                return .person
             case .phoneNumberChange:
-                return Theme.iconImage(.phone16)
+                return .phone
             case .recipientHidden:
-                return Theme.iconImage(.info16)
+                return .info
             case .paymentsActivationRequest, .paymentsActivated:
-                return Theme.iconImage(.settingsPayments)
+                return .creditcard
             case .threadMerge:
-                return Theme.iconImage(.merge16)
+                return .merge
             case .sessionSwitchover:
-                return Theme.iconImage(.info16)
+                return .info
             case .reportedSpam:
-                return Theme.iconImage(.spam)
+                return .spam
             case .learnedProfileName:
-                return Theme.iconImage(.threadCompact)
+                return Theme.isDarkThemeEnabled ? .thread : .threadFill
             case .blockedOtherUser:
-                return Theme.iconImage(.chatSettingsBlock)
+                return .block
             case .blockedGroup:
-                return Theme.iconImage(.chatSettingsBlock)
+                return .block
             case .unblockedOtherUser:
-                return Theme.iconImage(.threadCompact)
+                return Theme.isDarkThemeEnabled ? .thread : .threadFill
             case .unblockedGroup:
-                return Theme.iconImage(.threadCompact)
+                return Theme.isDarkThemeEnabled ? .thread : .threadFill
             case .acceptedMessageRequest:
-                return Theme.iconImage(.threadCompact)
+                return Theme.isDarkThemeEnabled ? .thread : .threadFill
             case .typeEndPoll:
-                return Theme.iconImage(.poll)
+                return .poll
             case .typePinnedMessage:
-                return Theme.iconImage(.pin)
+                return .pin
             }
         }
         if let call = interaction as? TSCall {
             switch call.offerType {
             case .audio:
-                return Theme.iconImage(.phone16)
+                return .phone
             case .video:
-                return Theme.iconImage(.video16)
+                return .video
             }
         }
         if interaction is OWSGroupCallMessage {
-            return Theme.iconImage(.video16)
+            return .video
         }
         owsFailDebug("Unknown interaction type: \(type(of: interaction))")
         return nil
     }
 
-    private static func iconName(displayableGroupUpdateItem: DisplayableGroupUpdateItem) -> String {
+    private static func symbol(forDisplayableGroupUpdateItem displayableGroupUpdateItem: DisplayableGroupUpdateItem) -> SignalSymbol {
         switch displayableGroupUpdateItem {
         case
             .localUserLeft,
             .otherUserLeft:
-            return Theme.iconName(.leave16)
+            return .leave
         case
             .localUserRemoved,
             .localUserRemovedByUnknownUser,
             .otherUserRemovedByLocalUser,
             .otherUserRemoved,
             .otherUserRemovedByUnknownUser:
-            return Theme.iconName(.memberRemove16)
+            return .personMinus
         case
             .unnamedUsersWereInvitedByLocalUser,
             .unnamedUsersWereInvitedByOtherUser,
@@ -1013,7 +1004,7 @@ extension CVComponentSystemMessage {
             .otherUserRequestApprovedByLocalUser,
             .otherUserRequestApproved,
             .otherUserRequestApprovedByUnknownUser:
-            return Theme.iconName(.memberAdded16)
+            return .personPlus
         case
             .createdByLocalUser,
             .createdByOtherUser,
@@ -1049,7 +1040,7 @@ extension CVComponentSystemMessage {
             .inviteLinkApprovalDisabledByOtherUser,
             .inviteLinkApprovalDisabledByUnknownUser,
             .inviteFriendsToNewlyCreatedGroup:
-            return Theme.iconName(.group16)
+            return .group
         case
             .unnamedUserInvitesWereRevokedByLocalUser,
             .unnamedUserInvitesWereRevokedByOtherUser,
@@ -1062,7 +1053,7 @@ extension CVComponentSystemMessage {
             .otherUserDeclinedInviteFromInviter,
             .otherUserDeclinedInviteFromUnknownUser,
             .otherUserInviteRevokedByLocalUser:
-            return Theme.iconName(.memberDeclined16)
+            return .personX
         case
             .wasMigrated,
             .localUserInvitedAfterMigration,
@@ -1095,7 +1086,7 @@ extension CVComponentSystemMessage {
             .announcementOnlyDisabledByLocalUser,
             .announcementOnlyDisabledByOtherUser,
             .announcementOnlyDisabledByUnknownUser:
-            return Theme.iconName(.megaphone16)
+            return .megaphone
         case
             .nameChangedByLocalUser,
             .nameChangedByOtherUser,
@@ -1109,7 +1100,7 @@ extension CVComponentSystemMessage {
             .descriptionRemovedByLocalUser,
             .descriptionRemovedByOtherUser,
             .descriptionRemovedByUnknownUser:
-            return Theme.iconName(.compose16)
+            return .edit
         case
             .avatarChangedByLocalUser,
             .avatarChangedByOtherUser,
@@ -1117,17 +1108,17 @@ extension CVComponentSystemMessage {
             .avatarRemovedByLocalUser,
             .avatarRemovedByOtherUser,
             .avatarRemovedByUnknownUser:
-            return Theme.iconName(.photo16)
+            return .photo
         case
             .disappearingMessagesEnabledByLocalUser,
             .disappearingMessagesEnabledByOtherUser,
             .disappearingMessagesEnabledByUnknownUser:
-            return Theme.iconName(.timer16)
+            return .timer
         case
             .disappearingMessagesDisabledByLocalUser,
             .disappearingMessagesDisabledByOtherUser,
             .disappearingMessagesDisabledByUnknownUser:
-            return Theme.iconName(.timerDisabled16)
+            return .timerSlash
         }
     }
 

Signal/Symbols.xcassets/check/check-compact.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "check-compact.pdf",
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
-  }
-}

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Signal/Symbols.xcassets/group/group-compact.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "group-compact.pdf",
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
-  }
-}

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Signal/Symbols.xcassets/heart/heart-compact.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
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-    {
-      "filename" : "heart-compact.pdf",
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
-  }
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Signal/Symbols.xcassets/leave/leave-compact.imageset/Contents.json

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-    {
-      "filename" : "leave-compact.pdf",
-      "idiom" : "universal"
-    }
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-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
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Signal/Symbols.xcassets/person/person-x-compact.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "person-x-compact.pdf",
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
-  }
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Signal/Symbols.xcassets/person/person-x-compact.imageset/person-x-compact.pdf

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Signal/Symbols.xcassets/refresh/refresh-compact.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "refresh-compact.pdf",
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
-  }
-}

Signal/Symbols.xcassets/refresh/refresh-compact.imageset/refresh-compact.pdf

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Signal/Symbols.xcassets/safety-number/safety-number-compact.imageset/Contents.json

@@ -1,15 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "safety_number-compact.pdf",
-      "idiom" : "universal"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  },
-  "properties" : {
-    "template-rendering-intent" : "template"
-  }
-}

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SignalUI/Appearance/SignalSymbols.swift

@@ -11,36 +11,30 @@ public enum SignalSymbol: Character {
 
     // MARK: - Symbols
 
-    case checkmark = "\u{E180}"
-    case clear = "\u{2327}"
-    case plus = "\u{E1D1}"
-    case minus = "\u{E1B7}"
-    case multiply = "\u{00D7}"
-    case minusCircle = "\u{E1B8}"
-    case timesCircle = "\u{2297}"
-    case plusCircle = "\u{E1D2}"
-    case arrowUp = "\u{E16B}"
-    case arrowUpRight = "\u{E16E}"
-    case arrowRight = "\u{E16A}"
-    case arrowDownRight = "\u{E170}"
+    case album = "\u{E001}"
     case arrowDown = "\u{E16C}"
     case arrowDownLeft = "\u{E16F}"
+    case arrowDownRight = "\u{E170}"
     case arrowLeft = "\u{E169}"
+    case arrowRight = "\u{E16A}"
+    case arrowUp = "\u{E16B}"
     case arrowUpLeft = "\u{E16D}"
-    case signal = "\u{E000}"
-    case album = "\u{E001}"
+    case arrowUpRight = "\u{E16E}"
     case at = "\u{E01B}"
     case audio = "\u{E01C}"
     case audioSquare = "\u{E01D}"
     case bell = "\u{E01E}"
-    case bellSlash = "\u{E01F}"
     case bellRing = "\u{E020}"
+    case bellSlash = "\u{E01F}"
+    case block = "\u{E002}"
     case checkCircle = "\u{E022}"
+    case checkmark = "\u{E180}"
     case checkSquare = "\u{E023}"
+    case chevronDown = "\u{E027}"
     case chevronLeft = "\u{E024}"
     case chevronRight = "\u{E025}"
     case chevronUp = "\u{E026}"
-    case chevronDown = "\u{E027}"
+    case clear = "\u{2327}"
     case creditcard = "\u{E127}"
     case edit = "\u{E030}"
     case error = "\u{E032}"
@@ -49,6 +43,7 @@ public enum SignalSymbol: Character {
     case gif = "\u{E037}"
     case gifRectangle = "\u{E195}"
     case group = "\u{E038}"
+    case heart = "\u{E039}"
     case incoming = "\u{E03A}"
     case info = "\u{E03B}"
     case leaveLTR = "\u{E03C}"
@@ -58,10 +53,10 @@ public enum SignalSymbol: Character {
     case lock = "\u{E041}"
     case megaphone = "\u{E042}"
     case merge = "\u{E043}"
-    case messageStatusSending = "\u{E044}"
-    case messageStatusSent = "\u{E045}"
     case messageStatusDelivered = "\u{E046}"
     case messageStatusRead = "\u{E047}"
+    case messageStatusSending = "\u{E044}"
+    case messageStatusSent = "\u{E045}"
     case messageTimer00 = "\u{E048}"
     case messageTimer05 = "\u{E049}"
     case messageTimer10 = "\u{E04A}"
@@ -77,28 +72,40 @@ public enum SignalSymbol: Character {
     case messageTimer60 = "\u{E054}"
     case mic = "\u{E055}"
     case micClash = "\u{E056}"
+    case minus = "\u{E1B7}"
+    case minusCircle = "\u{E1B8}"
     case missedIncoming = "\u{E05A}"
     case missedOutgoing = "\u{E05B}"
+    case multiply = "\u{00D7}"
     case outgoing = "\u{E05C}"
     case person = "\u{E05D}"
-    case personCircle = "\u{E05E}"
     case personCheck = "\u{E05F}"
-    case personX = "\u{E060}"
-    case personPlus = "\u{E061}"
+    case personCircle = "\u{E05E}"
     case personMinus = "\u{E062}"
+    case personPlus = "\u{E061}"
+    case personX = "\u{E060}"
     case phone = "\u{E063}"
     case phoneFill = "\u{E064}"
     case photo = "\u{E065}"
     case photoRectangle = "\u{E066}"
+    case pin = "\u{E12E}"
     case play = "\u{E067}"
-    case playSquare = "\u{E068}"
     case playRectangle = "\u{E069}"
+    case playSquare = "\u{E068}"
+    case plus = "\u{E1D1}"
+    case plusCircle = "\u{E1D2}"
     case poll = "\u{E082}"
+    case refresh = "\u{E0C4}"
     case reply = "\u{E06D}"
     case safetyNumber = "\u{E06F}"
+    case signal = "\u{E000}"
+    case spam = "\u{E033}"
     case sticker = "\u{E070}"
+    case thread = "\u{E071}"
+    case threadFill = "\u{E072}"
     case timer = "\u{E073}"
     case timerSlash = "\u{E074}"
+    case timesCircle = "\u{2297}"
     case video = "\u{E075}"
     case videoFill = "\u{E077}"
     case viewOnce = "\u{E078}"

SignalUI/Appearance/Theme+Icons.swift

@@ -139,28 +139,15 @@ public enum ThemeIcon: UInt {
 
     case errorCircle
 
-    case check16
     case compose16
     case error16
-    case group16
-    case heart16
-    case info16
-    case leave16
-    case megaphone16
-    case memberAdded16
-    case memberDeclined16
-    case memberRemove16
     case photo16
     case phone16
     case phoneFill16
     case video16
     case videoFill16
-    case profile16
-    case safetyNumber16
     case timerDisabled16
     case timer16
-    case refresh16
-    case merge16
     case link16
 
     case transfer
@@ -478,28 +465,10 @@ public extension Theme {
         case .errorCircle:
             return "error-circle"
         // Compact 16 dp icons
-        case .check16:
-            return "check-compact"
         case .compose16:
             return "edit-compact"
         case .error16:
             return "error-circle-compact"
-        case .group16:
-            return "group-compact"
-        case .heart16:
-            return "heart-compact"
-        case .info16:
-            return "info-compact"
-        case .leave16:
-            return "leave-compact"
-        case .megaphone16:
-            return "megaphone-compact"
-        case .memberAdded16:
-            return "person-plus-compact"
-        case .memberDeclined16:
-            return "person-x-compact"
-        case .memberRemove16:
-            return "person-minus-compact"
         case .photo16:
             return "photo-compact"
         case .phone16:
@@ -510,18 +479,10 @@ public extension Theme {
             return "video-compact"
         case .videoFill16:
             return "video-fill-compact"
-        case .profile16:
-            return "person-compact"
-        case .safetyNumber16:
-            return "safety-number-compact"
         case .timerDisabled16:
             return "timer-slash-compact"
         case .timer16:
             return "timer-compact"
-        case .refresh16:
-            return "refresh-compact"
-        case .merge16:
-            return "merge-compact"
         case .link16:
             return "link-compact"
         case .transfer: