Add status bar with color value

imageringlist.h

@@ -19,7 +19,7 @@ class Image : public QObject
     bool m_released;
     bool m_current;
     int m_number;
-    std::unique_ptr<RawImage> m_rawImage;
+    std::shared_ptr<RawImage> m_rawImage;
     std::unique_ptr<RawImage> m_thumbnail;
     QString m_name;
     ImageInfoData m_info;
@@ -30,7 +30,7 @@ public:
     void loadThumbnail(QThreadPool *pool);
     void release();
     QString name() const;
-    RawImage* rawImage();
+    std::shared_ptr<RawImage> rawImage();
     const RawImage* thumbnail() const;
     ImageInfoData info() const;
     bool isCurrent() const;