Log usage of log scale button

This will log the usage of the log scale button. It will log once
per plot tab, but reset if the user exits and re-enters the plot
window - for all tabs.

Author: SAKavli

src/ert/gui/tools/plot/plot_widget.py

@@ -153,6 +153,7 @@ def __init__(
         # only for histogram plot see _sync_log_checkbox
         self._log_checkbox.setVisible(False)
         self._log_checkbox.setToolTip("Toggle data domain to log scale and back")
+        self._log_checkbox.clicked.connect(self.logLogScaleButtonUsage)
 
         log_checkbox_row = QHBoxLayout()
         log_checkbox_row.addWidget(self._log_checkbox)
@@ -188,6 +189,10 @@ def _sync_log_checkbox(self) -> None:
     def name(self) -> str:
         return self._name
 
+    def logLogScaleButtonUsage(self) -> None:
+        logger.info(f"Plotwidget utility used: 'Log scale button' in tab '{self.name}'")
+        self._log_checkbox.clicked.disconnect()  # Log only once
+
     def updatePlot(
         self,
         plot_context: "PlotContext",