Change VideoManager::grabImage to automatically generate file name

src/Camera/QGCCameraControl.cc

@@ -387,10 +387,7 @@ QGCCameraControl::takePhoto()
             _captureInfoRetries = 0;
             //-- Capture local image as well
             if(qgcApp()->toolbox()->videoManager()) {
-                QString photoPath = qgcApp()->toolbox()->settingsManager()->appSettings()->savePath()->rawValue().toString() + QStringLiteral("/Photo");
-                QDir().mkpath(photoPath);
-                photoPath += + "/" + QDateTime::currentDateTime().toString("yyyy-MM-dd_hh.mm.ss.zzz") + ".jpg";
-                qgcApp()->toolbox()->videoManager()->grabImage(photoPath);
+                qgcApp()->toolbox()->videoManager()->grabImage();
             }
             return true;
         }

src/VideoManager/VideoManager.cc

@@ -350,7 +350,12 @@ VideoManager::grabImage(const QString& imageFile)
         return;
     }
 
-    _imageFile = imageFile;
+    if (imageFile.isEmpty()) {
+        _imageFile = qgcApp()->toolbox()->settingsManager()->appSettings()->photoSavePath();
+        _imageFile += + "/" + QDateTime::currentDateTime().toString("yyyy-MM-dd_hh.mm.ss.zzz") + ".jpg";
+    } else {
+        _imageFile = imageFile;
+    }
 
     emit imageFileChanged();
 

src/VideoManager/VideoManager.h

@@ -109,7 +109,7 @@ public:
     Q_INVOKABLE void startRecording (const QString& videoFile = QString());
     Q_INVOKABLE void stopRecording  ();
 
-    Q_INVOKABLE void grabImage(const QString& imageFile);
+    Q_INVOKABLE void grabImage(const QString& imageFile = QString());
 
 signals:
     void hasVideoChanged            ();