selects correct image when scaling emotes

src/util/emotemap.cpp

@@ -0,0 +1,48 @@
+#include "emotemap.hpp"
+
+#include "application.hpp"
+#include "singletons/settingsmanager.hpp"
+
+namespace chatterino {
+namespace util {
+
+EmoteData::EmoteData(messages::Image *_image)
+    : image1x(_image)
+{
+}
+
+// Emotes must have a 1x image to be valid
+bool EmoteData::isValid() const
+{
+    return this->image1x != nullptr;
+}
+
+messages::Image *EmoteData::getImage(float scale) const
+{
+    int quality = getApp()->settings->preferredEmoteQuality;
+
+    if (quality == 0) {
+        scale *= getApp()->settings->emoteScale.getValue();
+        quality = [&] {
+            if (scale <= 1)
+                return 1;
+            if (scale <= 2)
+                return 2;
+            return 3;
+        }();
+    }
+
+    messages::Image *_image;
+    if (quality == 3 && this->image3x != nullptr) {
+        _image = this->image3x;
+    } else if (quality >= 2 && this->image2x != nullptr) {
+        _image = this->image2x;
+    } else {
+        _image = this->image1x;
+    }
+
+    return _image;
+}
+
+}  // namespace util
+}  // namespace chatterino

src/util/emotemap.hpp

@@ -9,16 +9,11 @@ namespace util {
 struct EmoteData {
     EmoteData() = default;
 
-    EmoteData(messages::Image *_image)
-        : image1x(_image)
-    {
-    }
+    EmoteData(messages::Image *_image);
 
     // Emotes must have a 1x image to be valid
-    bool isValid() const
-    {
-        return this->image1x != nullptr;
-    }
+    bool isValid() const;
+    messages::Image *getImage(float scale) const;
 
     messages::Image *image1x = nullptr;
     messages::Image *image2x = nullptr;