weird bug for log-scaling fixed; fixes T248

src/gui_qt/data/shift_graphs.py

@@ -25,6 +25,9 @@ class QShift(QtWidgets.QDialog, Ui_shift_dialog):
         self.data = {}
         self._colors = cycle(Tab10)
 
+        self.graphicsView.plotItem.ctrl.logXCheck.blockSignals(True)
+        self.graphicsView.plotItem.ctrl.logYCheck.blockSignals(True)
+
         delegate = SpinBoxDelegate()
         delegate.valueChanged.connect(self.shift)
         self.shift_table.setItemDelegate(delegate)
@@ -40,10 +43,10 @@ class QShift(QtWidgets.QDialog, Ui_shift_dialog):
     def add_item(self, idx, name, x, y):
         color = mkColor(next(self._colors).rgb())
         if np.iscomplexobj(y):
-            pl = [PlotItem(x, y.real, name=name, pen=mkPen(color=color)),
+            pl = [PlotItem(x=x, y=y.real, name=name, pen=mkPen(color=color)),
-                  PlotItem(x, y.imag, name=name, pen=mkPen(color=color))]
+                  PlotItem(x=x, y=y.imag, name=name, pen=mkPen(color=color))]
         else:
-            pl = [PlotItem(x, y, name=name, pen=mkPen(color=color))]
+            pl = [PlotItem(x=x, y=y, name=name, symbol='t', pen=mkPen(color=color))]
 
         self.data[idx] = (pl, x, y)
 
@@ -123,10 +126,18 @@ class QShift(QtWidgets.QDialog, Ui_shift_dialog):
     def set_log(self, state: int):
         if self.sender() == self.xlog_checkbox:
             log_state = self.graphicsView.plotItem.ctrl.logXCheck
+            func = self.graphicsView.setXRange
         else:
             log_state = self.graphicsView.plotItem.ctrl.logYCheck
+            func = self.graphicsView.setYRange
+
         log_state.setCheckState(state)
         self.graphicsView.plotItem.updateLogMode()
+        # For some combinations of Python, pyqt, and pyqtgraph, updateLogMode does not update
+        # view range to log values and logTickValues generates LOTS of ticks, which freezes everything.
+        # -> Call setRange to interrupt the loop.
+        func(0, 1)
+        self.graphicsView.enableAutoRange()
 
     def on_overwrite_checkbox_stateChanged(self, state: int):
         self.data_newgraph.setVisible(state != QtCore.Qt.Checked)

src/gui_qt/graphs/graphwindow.py

@@ -419,7 +419,7 @@ class QGraphWindow(QtWidgets.QGraphicsView, Ui_GraphWindow):
 
         self.plotItem.updateLogMode()
 
-        self.set_range(x=r[0], y=r[1])
+        self.plotItem.enableAutoRange()
 
     def enable_picking(self, enabled: bool):
         if enabled:

src/gui_qt/lib/pg_objects.py

@@ -179,7 +179,11 @@ class PlotItem(PlotDataItem):
                 self.opts['linecolor'] = c.red(), c.green(), c.blue()
 
         if self.symbol != SymbolStyle.No:
-            c = self.opts['symbolBrush'].color()
+            brush = self.opts['symbolBrush']
+            if isinstance(brush, tuple):
+                self.opts['symbolcolor'] = brush
+            else:
+                c = brush.color()
                 self.opts['symbolcolor'] = c.red(), c.green(), c.blue()
 
     def __getitem__(self, item):
@@ -229,7 +233,7 @@ class PlotItem(PlotDataItem):
         else:
             return lc
 
-    def updateItems(self):
+    def updateItems(self, styleUpdate=True):
         """
         We override this function so that curves with nan/inf values can be displayed.
         Newer versions close this bug differently (https://github.com/pyqtgraph/pyqtgraph/pull/1058)
@@ -261,6 +265,7 @@ class PlotItem(PlotDataItem):
                 # remove all bad values
                 x = x[is_finite]
                 y = y[is_finite]
+            curveArgs['connect'] = 'all'
             self.curve.setData(x=x, y=y, **curveArgs)
             self.curve.show()
         else: