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v0.5.1: fix Windows Settings-dialog flicker

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donkey-ai
2026-07-04 08:07:33 +00:00
parent ca874d8e93
commit 9cbed79590
1 changed files with 13 additions and 14 deletions
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27
bal/gui/qt/plugin.py
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@@ -378,29 +378,28 @@ class Plugin(BalPlugin):
lbl_logo = QLabel()
lbl_logo.setPixmap(qicon)
# WINDOWS FLICKER FIX (root cause found by bisection with the owner
# testing on Windows): the ADVANCED-only rows used to be added to the
# WINDOWS FLICKER FIX (root cause found by bisection, tested on Windows
# by the user): the ADVANCED-only rows below used to be added to the
# grid *visible* and then hidden all at once with setVisible(False)
# AFTER they were already in the layout (see the old block near the
# end of this function). On Windows that visible->hidden transition,
# happening inside an already-populated layout while the dialog's
# native window is being created, forced a live re-layout that flashed
# the dialog on screen (the "ghost window" the owner saw). It only
# showed in ADVANCED because that is the larger dialog. The fix,
# validated step by step on Windows, is to set each ADVANCED-only
# AFTER they were already part of the layout. On Windows that
# visible->hidden transition, inside an already-populated layout while
# the dialog's native window is being created, forced a live re-layout
# that flashed the dialog on screen (the "ghost window" flicker). It
# only showed in ADVANCED mode because that is the larger dialog. The
# fix, validated step by step on Windows, is to set each ADVANCED-only
# widget's visibility BEFORE it is ever added to the layout, so it
# never transitions visible->hidden inside a live layout.
#
# ``basic_init`` is the current mode; ``_hide_if_basic(w)`` hides a
# widget immediately (at creation time) when in BASIC mode and returns
# it, so it can be wrapped around each ADVANCED-only widget inline.
# widget immediately (at creation/add time) when in BASIC mode and
# returns it, so it can be wrapped inline around each ADVANCED-only
# widget at its grid.addWidget(...) call.
basic_init = str(self.USER_TYPE.get()).lower() != "advanced"
def _hide_if_basic(w):
"""Hide *w* now (before it is added to any layout) if in BASIC
mode, and return it. Used to give ADVANCED-only widgets their
final visibility up-front, avoiding the Windows relayout flicker
that a later setVisible(False) inside the populated grid caused."""
mode, and return it. Avoids the Windows relayout flicker that a
later setVisible(False) inside the populated grid caused."""
if basic_init:
w.setVisible(False)
return w