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Новый виджет ui/widgets/shimmer_label.py (ShimmerLabel на основе QLabel): при каждом показе текст поднимается снизу и проявляется, строки идут одна за другой; раз в 7 секунд по английской и с задержкой по русской строке проходит светлая полоса внутри букв. Анимация рисуется из снимка родной отрисовки QLabel, поэтому текст приземляется точно на своё место. Стоит, пока вкладка скрыта, окно свёрнуто или выключены «Живые анимации».
135 lines
4.8 KiB
Python
135 lines
4.8 KiB
Python
from __future__ import annotations
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import os
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import time
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import unittest
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from unittest import mock
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os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
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from PyQt6.QtGui import QColor
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from PyQt6.QtWidgets import QApplication, QVBoxLayout, QWidget
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import ui.widgets.shimmer_label as shimmer_module
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from ui.widgets.shimmer_label import ShimmerLabel
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def _wait(seconds: float) -> None:
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deadline = time.monotonic() + seconds
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while time.monotonic() < deadline:
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QApplication.processEvents()
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def _ink_box(image) -> tuple[int, int, int, int] | None:
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background = image.pixel(0, 0)
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xs: list[int] = []
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ys: list[int] = []
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for y in range(image.height()):
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for x in range(image.width()):
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if image.pixel(x, y) != background:
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xs.append(x)
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ys.append(y)
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return (min(xs), min(ys), max(xs), max(ys)) if xs else None
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def _max_channel_diff(first, second) -> int:
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worst = 0
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for y in range(first.height()):
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for x in range(first.width()):
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a = QColor.fromRgba(first.pixel(x, y))
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b = QColor.fromRgba(second.pixel(x, y))
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worst = max(
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worst,
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abs(a.red() - b.red()),
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abs(a.green() - b.green()),
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abs(a.blue() - b.blue()),
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abs(a.alpha() - b.alpha()),
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)
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return worst
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class ShimmerLabelTests(unittest.TestCase):
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@classmethod
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def setUpClass(cls) -> None:
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cls._app = QApplication.instance() or QApplication([])
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def setUp(self) -> None:
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patcher = mock.patch.object(shimmer_module, "are_live_animations_enabled", return_value=True)
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patcher.start()
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self.addCleanup(patcher.stop)
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self.host = QWidget()
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self.addCleanup(self.host.deleteLater)
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self.layout = QVBoxLayout(self.host)
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self.host.resize(900, 160)
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def _build_motto(self) -> list[ShimmerLabel]:
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from ui.pages.about_page_help_build import build_about_page_motto_block
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from ui.theme import get_theme_tokens
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wrap = build_about_page_motto_block(tr_fn=lambda _key, default: default, tokens=get_theme_tokens())
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self.layout.addWidget(wrap)
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self.host.show()
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QApplication.processEvents()
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return wrap.findChildren(ShimmerLabel)
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def test_motto_lines_float_in_one_after_another(self) -> None:
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labels = self._build_motto()
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self.assertEqual(len(labels), 3)
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_wait(0.12)
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progress = [label.enter_progress() for label in labels]
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self.assertGreater(progress[0], 0.0)
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self.assertLess(progress[0], 1.0)
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self.assertLess(progress[1], progress[0])
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self.assertEqual(progress[2], 0.0)
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_wait(1.2)
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self.assertEqual([label.enter_progress() for label in labels], [1.0, 1.0, 1.0])
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def test_floating_text_lands_exactly_on_native_text(self) -> None:
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labels = self._build_motto()
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_wait(1.2)
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for label in labels:
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with self.subTest(text=label.text()[:20]):
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native = label.grab().toImage()
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label._refresh_snapshot()
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label._enter = 0.9999999
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label.update()
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QApplication.processEvents()
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landing = label.grab().toImage()
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label._enter = 1.0
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# Буквы на тех же местах; разница только в округлении прозрачности.
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self.assertEqual(_ink_box(native), _ink_box(landing))
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self.assertLessEqual(_max_channel_diff(native, landing), 2)
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def test_sheen_loops_over_the_text(self) -> None:
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label = ShimmerLabel("keep thinking", period_ms=2400, first_delay_ms=0)
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self.layout.addWidget(label)
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self.host.show()
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_wait(0.3)
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self.assertTrue(label.is_sweeping())
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label.grab()
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_wait(shimmer_module.SWEEP_DURATION_MS / 1000 + 0.1)
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self.assertFalse(label.is_sweeping())
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_wait(0.8)
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self.assertTrue(label.is_sweeping())
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def test_nothing_moves_when_live_animations_are_off(self) -> None:
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with mock.patch.object(shimmer_module, "are_live_animations_enabled", return_value=False):
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labels = self._build_motto()
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_wait(1.2)
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self.assertEqual([label.enter_progress() for label in labels], [1.0, 1.0, 1.0])
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self.assertFalse(any(label.is_sweeping() for label in labels))
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def test_hiding_stops_everything(self) -> None:
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labels = self._build_motto()
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_wait(0.1)
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self.host.hide()
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QApplication.processEvents()
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for label in labels:
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self.assertEqual(label.enter_progress(), 1.0)
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self.assertFalse(label.is_sweeping())
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self.assertFalse(label._pause.isActive())
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if __name__ == "__main__":
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unittest.main()
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