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fix(scroll_label): updating label during scrolling is done imminently, regardless scrolling

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wyzula_j
2025-06-16 14:56:44 +02:00
committed by Jan Wyzula
parent 8c3d6334f6
commit 1612933dd9
1 changed files with 24 additions and 3 deletions
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27
bec_widgets/widgets/containers/main_window/addons/scroll_label.py
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@ -25,17 +25,29 @@ class ScrollLabel(QLabel):
self._step_px = step_px self._step_px = step_px
def setText(self, text): def setText(self, text):
"""
Overridden to ensure that new text replaces the current one
immediately.
If the label was already scrolling (or in its delay phase),
the next message starts **without** the extra delay.
"""
# Determine whether the widget was already in a scrolling cycle
was_scrolling = self._timer.isActive() or self._delay_timer.isActive()
super().setText(text) super().setText(text)
fm = QFontMetrics(self.font()) fm = QFontMetrics(self.font())
self._text_width = fm.horizontalAdvance(text) self._text_width = fm.horizontalAdvance(text)
self._offset = 0 self._offset = 0
self._update_timer()
# Skip the delay when we were already scrolling
self._update_timer(skip_delay=was_scrolling)
def resizeEvent(self, event): def resizeEvent(self, event):
super().resizeEvent(event) super().resizeEvent(event)
self._update_timer() self._update_timer()
def _update_timer(self): def _update_timer(self, *, skip_delay: bool = False):
""" """
Decide whether to start or stop scrolling. Decide whether to start or stop scrolling.
@ -46,10 +58,19 @@ class ScrollLabel(QLabel):
needs_scroll = self._text_width > self.width() needs_scroll = self._text_width > self.width()
if needs_scroll: if needs_scroll:
# Reset any running timers
if self._timer.isActive(): if self._timer.isActive():
self._timer.stop() self._timer.stop()
if self._delay_timer.isActive():
self._delay_timer.stop()
self._offset = 0 self._offset = 0
if not self._delay_timer.isActive():
# Start scrolling immediately when we should skip the delay,
# otherwise apply the configured delay_ms interval
if skip_delay:
self._timer.start()
else:
self._delay_timer.start() self._delay_timer.start()
else: else:
if self._delay_timer.isActive(): if self._delay_timer.isActive():