diff -r b273b43b16d2 -r 8354b390f1a2 qmlfrontend/preview_image_provider.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qmlfrontend/preview_image_provider.cpp	Wed Nov 07 15:59:51 2018 +0100
@@ -0,0 +1,23 @@
+#include "preview_image_provider.h"
+
+PreviewImageProvider::PreviewImageProvider()
+    : QQuickImageProvider(QQuickImageProvider::Pixmap) {}
+
+QPixmap PreviewImageProvider::requestPixmap(const QString &id, QSize *size,
+                                            const QSize &requestedSize) {
+  Q_UNUSED(id);
+  Q_UNUSED(requestedSize);
+
+  if (size) *size = m_px.size();
+
+  return m_px;
+}
+
+void PreviewImageProvider::setImage(const QImage &preview) {
+  m_px = QPixmap::fromImage(preview, Qt::ColorOnly);
+  // QPixmap pxres(px.size());
+  // QPainter p(&pxres);
+
+  // p.fillRect(pxres.rect(), linearGrad);
+  // p.drawPixmap(0, 0, px);
+}