clean structure

src/gui/CoverArtWidget.h

@@ -0,0 +1,17 @@
+#pragma once
+#include <QWidget>
+#include <QImage>
+#include "engine/Track.h"
+
+class CoverArtWidget : public QWidget {
+    Q_OBJECT
+public:
+    explicit CoverArtWidget(QWidget *parent = nullptr);
+    void setTrack(const engine::Track *t);
+protected:
+    void paintEvent(QPaintEvent *) override;
+private:
+    QImage  m_cover;
+    QString m_title  { "No track" };
+    QString m_artist;
+};