Implement a dialog to plot and export GPS data

Create a dialog with buttons to plot and export GPS data.

Show information about a GPS data point when user clicks on it.

#19 (closed)

sohstationviewer/view/plotting/gps_dialog.py

 import math
 import sys
+import traceback
 from pathlib import Path
 from typing import List, Optional
 
@@ -12,6 +13,8 @@ from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as Canvas
 from matplotlib.figure import Figure
 from matplotlib.axes import Axes
 
+from sohstationviewer.view.util.enums import LogType
+
 
 class GPSWidget(QtWidgets.QWidget):
     def __init__(self, parent: QtWidgets.QWidget,
@@ -199,19 +202,35 @@ class GPSDialog(QtWidgets.QWidget):
         <YYYY-MM-DD HH:MM:SS> <fix type> <no. sats. used> <latitude:.6f> <longitude:.6f> <height:.6f>  # noqa
         and is tab-separated.
         """
+        self.info_text_browser.setHorizontalScrollBarPolicy(
+            QtCore.Qt.ScrollBarAsNeeded)
+        self.info_text_browser.setVerticalScrollBarPolicy(
+            QtCore.Qt.ScrollBarAsNeeded)
+        self.info_text_browser.verticalScrollBar().setDisabled(False)
+        self.info_text_browser.horizontalScrollBar().setDisabled(False)
+
         folder_name = self.data_path.name
         outside_folder = self.data_path.parent
-        with open(outside_folder / f'{folder_name}.gps.dat', 'w+') as outfile:
-            outfile.write(f'# GPS data points for {folder_name}\n')
-            for point in self.gps_points:
-                if point.is_bad_point():
-                    continue
-                line = (
-                    f'{point.last_timemark}\t{point.fix_type}\t'
-                    f'{point.num_satellite_used}\t{point.latitude:+.6f}\t'
-                    f'{point.longitude:+.6f}\t{point.height:.6f}\n'
-                )
-                outfile.write(line)
+        export_file_path = outside_folder / f'{folder_name}.gps.dat'
+
+        try:
+            with open(export_file_path, 'w+') as outfile:
+                outfile.write(f'# GPS data points for {folder_name}\n')
+                for point in self.gps_points:
+                    if point.is_bad_point():
+                        continue
+                    line = (
+                        f'{point.last_timemark}\t{point.fix_type}\t'
+                        f'{point.num_satellite_used}\t{point.latitude:+.6f}\t'
+                        f'{point.longitude:+.6f}\t{point.height:.6f}\n'
+                    )
+                    outfile.write(line)
+        except:
+            msg = traceback.format_exc()
+            display_tracking_info(self.info_text_browser, msg, LogType.ERROR)
+        else:
+            msg = f'Successfully exported to {export_file_path}'
+            display_tracking_info(self.info_text_browser, msg, LogType.INFO)
 
 
 # We use the WGS-84's version of the Earth ellipsoid as a reference point for