From 611598894b39830685234bbc230a47beb9625133 Mon Sep 17 00:00:00 2001 From: daniilS Date: Wed, 13 Apr 2022 15:09:24 +0100 Subject: [PATCH] Fix Tk error when updating Checkbutton images --- lib/matplotlib/backends/_backend_tk.py | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/lib/matplotlib/backends/_backend_tk.py b/lib/matplotlib/backends/_backend_tk.py index 67f8d792d996..c759fe4840d6 100644 --- a/lib/matplotlib/backends/_backend_tk.py +++ b/lib/matplotlib/backends/_backend_tk.py @@ -669,9 +669,13 @@ def _recolor_icon(image, color): button._ntimage_alt = image_alt if _is_dark("background"): - button.configure(image=image_alt) + # For Checkbuttons, we need to set `image` and `selectimage` at + # the same time. Otherwise, when updating the `image` option + # (such as when changing DPI), if the old `selectimage` has + # just been overwritten, Tk will throw an error. + image_kwargs = {"image": image_alt} else: - button.configure(image=image) + image_kwargs = {"image": image} # Checkbuttons may switch the background to `selectcolor` in the # checked state, so check separately which image it needs to use in # that state to still ensure enough contrast with the background. @@ -689,11 +693,11 @@ def _recolor_icon(image, color): r2, g2, b2 = _get_color("activebackground") selectcolor = ((r1+r2)/2, (g1+g2)/2, (b1+b2)/2) if _is_dark(selectcolor): - button.configure(selectimage=image_alt) + image_kwargs["selectimage"] = image_alt else: - button.configure(selectimage=image) + image_kwargs["selectimage"] = image - button.configure(height='18p', width='18p') + button.configure(**image_kwargs, height='18p', width='18p') def _Button(self, text, image_file, toggle, command): if not toggle: pFad - Phonifier reborn

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