From 83251ac2a1d780dc4af2bacab07b43552c5b7a70 Mon Sep 17 00:00:00 2001 From: Thomas A Caswell Date: Thu, 22 Aug 2024 14:50:03 -0400 Subject: [PATCH] Backport PR #28271: Fix draggable legend disappearing when picking while use_blit=True --- lib/matplotlib/offsetbox.py | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/lib/matplotlib/offsetbox.py b/lib/matplotlib/offsetbox.py index 32c5bafcde1d..194b950a8a30 100644 --- a/lib/matplotlib/offsetbox.py +++ b/lib/matplotlib/offsetbox.py @@ -1486,11 +1486,13 @@ def on_motion(self, evt): self.canvas.draw() def on_pick(self, evt): - if self._check_still_parented() and evt.artist == self.ref_artist: - self.mouse_x = evt.mouseevent.x - self.mouse_y = evt.mouseevent.y - self.got_artist = True - if self._use_blit: + if self._check_still_parented(): + if evt.artist == self.ref_artist: + self.mouse_x = evt.mouseevent.x + self.mouse_y = evt.mouseevent.y + self.save_offset() + self.got_artist = True + if self.got_artist and self._use_blit: self.ref_artist.set_animated(True) self.canvas.draw() self.background = \ @@ -1498,13 +1500,15 @@ def on_pick(self, evt): self.ref_artist.draw( self.ref_artist.figure._get_renderer()) self.canvas.blit() - self.save_offset() def on_release(self, event): if self._check_still_parented() and self.got_artist: self.finalize_offset() self.got_artist = False if self._use_blit: + self.canvas.restore_region(self.background) + self.ref_artist.draw(self.ref_artist.figure._get_renderer()) + self.canvas.blit() self.ref_artist.set_animated(False) def _check_still_parented(self):