Added support for Twitch's Chat Replies (#3722)

Co-authored-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/messages/MessageElement.hpp

@@ -126,6 +126,12 @@ enum class MessageElementFlag : int64_t {
     // e.g. BTTV's SoSnowy during christmas season
     ZeroWidthEmote = (1LL << 31),
 
+    // for elements of the message reply
+    RepliedMessage = (1LL << 32),
+
+    // for the reply button element
+    ReplyButton = (1LL << 33),
+
     Default = Timestamp | Badges | Username | BitsStatic | FfzEmoteImage |
               BttvEmoteImage | TwitchEmoteImage | BitsAmount | Text |
               AlwaysShow,
@@ -209,6 +215,22 @@ private:
     ImagePtr image_;
 };
 
+// contains a image with a circular background color
+class CircularImageElement : public MessageElement
+{
+public:
+    CircularImageElement(ImagePtr image, int padding, QColor background,
+                         MessageElementFlags flags);
+
+    void addToContainer(MessageLayoutContainer &container,
+                        MessageElementFlags flags) override;
+
+private:
+    ImagePtr image_;
+    int padding_;
+    QColor background_;
+};
+
 // contains a text, it will split it into words
 class TextElement : public MessageElement
 {
@@ -232,6 +254,29 @@ private:
     std::vector<Word> words_;
 };
 
+// contains a text that will be truncated to one line
+class SingleLineTextElement : public MessageElement
+{
+public:
+    SingleLineTextElement(const QString &text, MessageElementFlags flags,
+                          const MessageColor &color = MessageColor::Text,
+                          FontStyle style = FontStyle::ChatMedium);
+    ~SingleLineTextElement() override = default;
+
+    void addToContainer(MessageLayoutContainer &container,
+                        MessageElementFlags flags) override;
+
+private:
+    MessageColor color_;
+    FontStyle style_;
+
+    struct Word {
+        QString text;
+        int width = -1;
+    };
+    std::vector<Word> words_;
+};
+
 // contains emote data and will pick the emote based on :
 //   a) are images for the emote type enabled
 //   b) which size it wants
@@ -355,4 +400,18 @@ public:
 private:
     ImageSet images_;
 };
+
+class ReplyCurveElement : public MessageElement
+{
+public:
+    ReplyCurveElement();
+
+    void addToContainer(MessageLayoutContainer &container,
+                        MessageElementFlags flags) override;
+
+private:
+    int neededMargin_;
+    QSize size_;
+};
+
 }  // namespace chatterino