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Handle n+1 characters in the scrolling decorator

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Pavle Portic 2020-05-15 20:31:00 +02:00
parent 3bb2fb8247
commit a8df4a5f9d
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3 changed files with 19 additions and 2 deletions
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3
.gitignore vendored
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@ -94,3 +94,6 @@ ENV/
# Visual studio project files # Visual studio project files
.vscode/ .vscode/
# mypy cache
.mypy_cache

9
bumblebee_status/core/decorators.py
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@ -1,6 +1,10 @@
import difflib import difflib
import logging
import util.format import util.format
log = logging.getLogger(__name__)
def never(init): def never(init):
def call_init(obj, *args, **kwargs): def call_init(obj, *args, **kwargs):
@ -49,9 +53,10 @@ def scrollable(func):
direction = widget.get("scrolling.direction", "right") direction = widget.get("scrolling.direction", "right")
if direction == "left": if direction == "left":
scroll_speed = -scroll_speed if start - scroll_speed < 0: # bounce back
if start + scroll_speed <= 0: # bounce back
widget.set("scrolling.direction", "right") widget.set("scrolling.direction", "right")
else:
scroll_speed = -scroll_speed
next_start = start + scroll_speed next_start = start + scroll_speed
if next_start + width > len(text): if next_start + width > len(text):

9
tests/core/test_decorators.py
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@ -81,5 +81,14 @@ class config(unittest.TestCase):
self.module.text = "this is a different song (0:12)" self.module.text = "this is a different song (0:12)"
self.assertEqual(self.module.text[0:10], self.module.get(self.widget)) self.assertEqual(self.module.text[0:10], self.module.get(self.widget))
def test_n_plus_one(self):
self.module.text = "10 letters"
self.module.set("scrolling.width", 9)
self.assertEqual(self.module.text[0:9], self.module.get(self.widget))
self.assertEqual(self.module.text[1:10], self.module.get(self.widget))
self.assertEqual(self.module.text[0:9], self.module.get(self.widget))
self.assertEqual(self.module.text[1:10], self.module.get(self.widget))
self.assertEqual(self.module.text[0:9], self.module.get(self.widget))
# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4 # vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4