[MRG] Fix clicking on an axis of mne.viz.plot_evoked_topo when multip…

…le vertical lines are added (mne-tools#12345)

doc/changes/devel/12345.bugfix.rst

@@ -0,0 +1 @@
+Fix clicking on an axis of :func:`mne.viz.plot_evoked_topo` when multiple vertical lines ``vlines`` are used, by `Mathieu Scheltienne`_.

mne/viz/evoked.py

@@ -1218,7 +1218,7 @@ def plot_evoked_topo(
         If true SSP projections are applied before display. If 'interactive',
         a check box for reversible selection of SSP projection vectors will
         be shown.
-    vline : list of float | None
+    vline : list of float | float| None
         The values at which to show a vertical line.
     fig_background : None | ndarray
         A background image for the figure. This must work with a call to

mne/viz/topo.py

@@ -16,7 +16,7 @@
 
 from .._fiff.pick import channel_type, pick_types
 from ..defaults import _handle_default
-from ..utils import Bunch, _check_option, _clean_names, _to_rgb, fill_doc
+from ..utils import Bunch, _check_option, _clean_names, _is_numeric, _to_rgb, fill_doc
 from .utils import (
     DraggableColorbar,
     _check_cov,
@@ -631,10 +631,14 @@ def _rm_cursor(event):
         else:
             ax.set_ylabel(y_label)
 
-    if vline:
-        plt.axvline(vline, color=hvline_color, linewidth=1.0, linestyle="--")
-    if hline:
-        plt.axhline(hline, color=hvline_color, linewidth=1.0, zorder=10)
+    if vline is not None:
+        vline = [vline] if _is_numeric(vline) else vline
+        for vline_ in vline:
+            plt.axvline(vline_, color=hvline_color, linewidth=1.0, linestyle="--")
+    if hline is not None:
+        hline = [hline] if _is_numeric(hline) else hline
+        for hline_ in hline:
+            plt.axhline(hline_, color=hvline_color, linewidth=1.0, zorder=10)
 
     if colorbar:
         plt.colorbar()