added toggle for greying out historic messages (#822)

src/providers/twitch/TwitchChannel.cpp

@@ -48,7 +48,8 @@ namespace {
 
             MessageParseArgs args;
             TwitchMessageBuilder builder(channel.get(), privMsg, args);
-            builder.message().flags.set(MessageFlag::Disabled);
+            if (getSettings()->greyOutHistoricMessages)
+                builder.message().flags.set(MessageFlag::Disabled);
 
             if (!builder.isIgnored())
                 messages.push_back(builder.build());

src/singletons/Settings.hpp

@@ -35,6 +35,8 @@ public:
                                      Qt::VerPattern};
     QStringSetting lastMessageColor = {"/appearance/messages/lastMessageColor",
                                        ""};
+    BoolSetting greyOutHistoricMessages = {
+        "/appearance/messages/greyOutHistoricMessages", true};
     BoolSetting showEmptyInput = {"/appearance/showEmptyInputBox", true};
     BoolSetting showMessageLength = {"/appearance/messages/showMessageLength",
                                      false};

src/widgets/settingspages/LookPage.cpp

@@ -152,6 +152,8 @@ void LookPage::addMessageTab(LayoutCreator<QVBoxLayout> layout)
     layout.append(this->createCheckBox(
         "Alternate background", getSettings()->alternateMessageBackground));
 
+    layout.append(this->createCheckBox("Grey out historic messages",
+                                       getSettings()->greyOutHistoricMessages));
     // --
     layout.emplace<Line>(false);