diff -r ef2fc0210362 -r 90bd2c331703 qmlfrontend/preview_acceptor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qmlfrontend/preview_acceptor.h	Fri Dec 07 13:35:08 2018 +0100
@@ -0,0 +1,21 @@
+#ifndef PREVIEW_ACCEPTOR_H
+#define PREVIEW_ACCEPTOR_H
+
+#include <QObject>
+
+class QQmlEngine;
+class PreviewImageProvider;
+
+class PreviewAcceptor : public QObject {
+  Q_OBJECT
+ public:
+  explicit PreviewAcceptor(QQmlEngine *engine, QObject *parent = nullptr);
+
+ public slots:
+  void setImage(const QImage &preview);
+
+ private:
+  PreviewImageProvider *m_previewProvider;
+};
+
+#endif  // PREVIEW_ACCEPTOR_H