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comparison cagou/core/common_widgets.py @ 329:51520ce98154

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common_widgets (DelayedBoxLayout), chat: don't delay layout on new message: DelayedBoxLayout has a new `dont_delay_next_layouts` property to skip delaying for the next X sizing. This is used in chat widget to avoid unpleasant flickering when a new message is sent or received.
author Goffi <goffi@goffi.org>
date Fri, 20 Dec 2019 12:29:37 +0100
parents 4374cb741eb5
children 3002704318e3
comparison
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328:dddea9684a8e 329:51520ce98154
37 # XXX: thanks to Alexander Taylor for his blog post at 37 # XXX: thanks to Alexander Taylor for his blog post at
38 # https://blog.kivy.org/2019/07/a-delayed-resize-layout-in-kivy/ 38 # https://blog.kivy.org/2019/07/a-delayed-resize-layout-in-kivy/
39 39
40 do_layout_event = properties.ObjectProperty(None, allownone=True) 40 do_layout_event = properties.ObjectProperty(None, allownone=True)
41 layout_delay_s = properties.NumericProperty(0.2) 41 layout_delay_s = properties.NumericProperty(0.2)
42 #: set this to X to force next X layouts to be done without delay
43 dont_delay_next_layouts = properties.NumericProperty(0)
42 44
43 def do_layout(self, *args, **kwargs): 45 def do_layout(self, *args, **kwargs):
44 if self.do_layout_event is not None: 46 if self.do_layout_event is not None:
45 self.do_layout_event.cancel() 47 self.do_layout_event.cancel()
46 real_do_layout = super().do_layout 48 if self.dont_delay_next_layouts>0:
47 self.do_layout_event = Clock.schedule_once( 49 self.dont_delay_next_layouts-=1
48 lambda dt: real_do_layout(*args, **kwargs), 50 super().do_layout()
49 self.layout_delay_s) 51 else:
52 real_do_layout = super().do_layout
53 self.do_layout_event = Clock.schedule_once(
54 lambda dt: real_do_layout(*args, **kwargs),
55 self.layout_delay_s)
50 56
51 57
52 class Identities(object): 58 class Identities(object):
53 59
54 def __init__(self, entity_ids): 60 def __init__(self, entity_ids):