Add viewer list button to twitch channel header (#2042)

src/widgets/splits/SplitHeader.cpp

@@ -228,6 +228,11 @@ void SplitHeader::initializeLayout()
                     }
                 });
         }),
+        // viewer list
+        this->viewersButton_ = makeWidget<Button>([&](auto w) {
+            QObject::connect(w, &Button::leftClicked, this,
+                             [this]() { this->split_->showViewerList(); });
+        }),
         // dropdown
         this->dropdownButton_ = makeWidget<Button>([&](auto w) {
             /// XXX: this never gets disconnected
@@ -567,6 +572,7 @@ void SplitHeader::scaleChangedEvent(float scale)
     this->setFixedHeight(w);
     this->dropdownButton_->setFixedWidth(w);
     this->moderationButton_->setFixedWidth(w);
+    this->viewersButton_->setFixedWidth(w);
     this->addButton_->setFixedWidth(w * 5 / 8);
 }
 
@@ -575,6 +581,11 @@ void SplitHeader::setAddButtonVisible(bool value)
     this->addButton_->setVisible(value);
 }
 
+void SplitHeader::setViewersButtonVisible(bool value)
+{
+    this->viewersButton_->setVisible(value);
+}
+
 void SplitHeader::updateChannelText()
 {
     auto indirectChannel = this->split_->getIndirectChannel();
@@ -780,11 +791,13 @@ void SplitHeader::themeChangedEvent()
     // --
     if (this->theme->isLightTheme())
     {
+        this->viewersButton_->setPixmap(getResources().buttons.viewersDark);
         this->dropdownButton_->setPixmap(getResources().buttons.menuDark);
         this->addButton_->setPixmap(getResources().buttons.addSplit);
     }
     else
     {
+        this->viewersButton_->setPixmap(getResources().buttons.viewersLight);
         this->dropdownButton_->setPixmap(getResources().buttons.menuLight);
         this->addButton_->setPixmap(getResources().buttons.addSplitDark);
     }