fix

兼容2种帧数显示逻辑：（1）采集时的实时帧数（2）打开影像时的帧数；

HPPA/RasterLayer.h

@@ -31,6 +31,10 @@ public:
     // Get all band wavelengths
     std::vector<double> bandWavelengths() const;
 
+    // Get dimensions
+    int width() const;
+    int height() const;
+
 protected:
     std::unique_ptr<RasterDataProvider> m_provider;
 };