calling get_data_point_info() instead of very complicated code to calculate for data point's info

sohstationviewer/view/plotting/plotting_widget/plotting_widget.py

@@ -5,6 +5,7 @@ from typing import List, Optional, Union
 import numpy as np
 import matplotlib.text
 from matplotlib import pyplot as pl
+from matplotlib.collections import PathCollection
 from matplotlib.transforms import Bbox
 from PySide6.QtCore import QTimer, Qt
 from PySide6 import QtCore, QtWidgets
@@ -12,9 +13,9 @@ from PySide6.QtWidgets import QWidget, QApplication, QTextBrowser
 
 from sohstationviewer.conf import constants
 from sohstationviewer.view.util.color import set_color_mode
-from sohstationviewer.view.util.functions import (
-    get_total_miny_maxy, get_index_from_time
-)
+
+from sohstationviewer.view.plotting.plotting_widget.plotting_widget_helper \
+    import get_data_point_info, get_total_miny_maxy
 from sohstationviewer.view.plotting.plotting_widget.plotting_axes import (
     PlottingAxes
 )
@@ -296,50 +297,32 @@ class PlottingWidget(QtWidgets.QScrollArea):
             focus SOH tab, roll to the corresponding line.
         """
         artist = event.artist
-        if isinstance(artist, pl.Line2D):
-            ax = artist.axes
-            chan_id = ax.chan
-            chan_data = self.plotting_data1[chan_id]
-            # list of x values of the plot
-            x_list = artist.get_xdata()
-            # list of y values of the plot
-            y_list = artist.get_ydata()
-
-            # index of the clicked point on the plot
-            click_plot_index = event.ind[0]
-
-            # time, val of the clicked point
-            clicked_time = x_list[click_plot_index]
-            clicked_val = y_list[click_plot_index]
-
-            list_idx, section_idx = get_index_from_time(
-                chan_data, clicked_time, clicked_val)
-
-            if list_idx is None:
-                display_tracking_info(self.tracking_box, "Point not found.")
-                return
+        ax = artist.axes
 
-            clicked_data = chan_data['data'][list_idx][section_idx]
-            if hasattr(ax, 'unit_bw'):
-                clicked_data = ax.unit_bw.format(clicked_data)
-            formatted_clicked_time = format_time(
-                clicked_time, self.date_mode, 'HH:MM:SS')
-            info_str = (f"<pre>Channel: {chan_id}   "
-                        f"Point:{click_plot_index + 1}   "
-                        f"Time: {formatted_clicked_time}   "
-                        f"Value: {clicked_data}</pre>")
-            display_tracking_info(self.tracking_box, info_str)
-            if 'logIdx' in chan_data.keys():
-                # For Reftek, need to hightlight the corresponding
-                # SOH message line based on the log_idx of the clicked point
-                self.parent.search_message_dialog.show()
-                clicked_log_idx = chan_data['logIdx'][0][section_idx]
-                try:
-                    self.parent.search_message_dialog. \
-                        show_log_entry_from_data_index(clicked_log_idx)
-                except ValueError as e:
-                    QtWidgets.QMessageBox.warning(self, "Not found",
-                                                  str(e))
+        if isinstance(artist, pl.Line2D):
+            # normal channels
+            click_index = event.ind[0]
+            chan_data = self.plotting_data1[ax.chan]
+        elif isinstance(artist, PathCollection):
+            # mass position channels
+            click_index = event.ind[0]
+            chan_data = self.plotting_data2[ax.chan]
+        else:
+            return
+        info_str = get_data_point_info(
+            click_index, ax, chan_data, self.date_mode)
+        display_tracking_info(self.tracking_box, info_str)
+        if 'logIdx' in chan_data.keys():
+            # For Reftek, need to hightlight the corresponding
+            # SOH message line based on the log_idx of the clicked point
+            self.parent.search_message_dialog.show()
+            clicked_log_idx = chan_data['logIdx'][0][click_index]
+            try:
+                self.parent.search_message_dialog. \
+                    show_log_entry_from_data_index(clicked_log_idx)
+            except ValueError as e:
+                QtWidgets.QMessageBox.warning(self, "Not found",
+                                              str(e))
 
     def on_button_press_event(self, event):
         """