Dog loader: render real GIF frames as truecolor half-blocks

- add ui/dog_art.py: 12 frames from 236205.gif (64x42, 128-color
  palette, transparent background), zlib+base64 embedded
- DogLoader draws half-block truecolor cells over the dimmed dashboard,
  transparent background, paw trail 🐾, 40 ms/frame (GIF speed)
- full-screen overlay + input blocking preserved
- tests: frame data + animation; docs updated

CHANGELOG.md

@@ -7,11 +7,10 @@
 Анимация-«собачка» при обновлении статистики.
 
 ### Добавлено
-- Экран **Dashboard**: полноэкранный индикатор загрузки — бегущая ASCII-собачка
+- Экран **Dashboard**: полноэкранный индикатор загрузки — анимированная
-  поверх всего окна с полупрозрачным затемнением (`$background 80%`),
+  **собачка из GIF** (12 кадров, 40 мс), отрисованная truecolor
-  панелью по центру (рамка `border: round`), дорожкой из 🐾 и подписью
+  half-block'ами (▀) с прозрачным фоном поверх затемнённого дашборда
-  «Обновление статистики…». Анимация: переставляет лапы и виляет хвостом
+  (`$background 80%`), под ней — бегущая дорожка из 🐾.
-  (4 кадра, 0,12 с).
 - На время загрузки ввод блокируется (горячие клавиши и фокус), после
   завершения — возвращается.
 - Показывается при автообновлении по таймеру и при ручном обновлении (`r`);

README.md

@@ -12,7 +12,7 @@ TUI-приложение (Python 3.10+) для отображения потре
 - Детализация метрик конкретной модели (Enter в таблице моделей)
 - Офлайн-режим: при недоступности API показывает последние данные из кэша
 - Автообновление по интервалу из конфигурации (по умолчанию 60 с)
-- Полноэкранный индикатор загрузки: бегущая ASCII-собачка с затемнением фона
+- Полноэкранный индикатор загрузки: анимированная собачка (truecolor) с 🐾
 - Экспорт истории в CSV/JSON, диагностика окружения (`doctor`)
 
 ## Интерфейс

src/selectel_ml_tui/ui/app.py

@@ -9,8 +9,6 @@ from __future__ import annotations
 
 from typing import Any
 
-from rich.align import Align
-from rich.panel import Panel
 from rich.text import Text
 from textual import on, work
 from textual.app import App, ComposeResult
@@ -46,6 +44,7 @@ from selectel_ml_tui.models import (
 )
 from selectel_ml_tui.services import DashboardData, DataService
 from selectel_ml_tui.storage import Storage
+from selectel_ml_tui.ui import dog_art
 
 PERIOD_OPTIONS = (7, 30, 90)
 
@@ -57,40 +56,32 @@ def _mask_token(value: str) -> str:
 
 
 class DogLoader(Static):
-    """Полноэкранный индикатор загрузки: бегущая ASCII-собачка.
+    """Полноэкранный индикатор загрузки: анимация собачки из GIF.
 
-    overlay поверх всего дашборда с полупрозрачным затемнением; собака
+    Рисуется truecolor half-block'ами (2 пикселя на знакоместо), фон
-    «бежит» (переставляет лапы, виляет хвостом), под ней — дорожка из 🐾.
+    прозрачный — просвечивает затемнённый дашборд. Под собачкой бежит
-    Показывается на время обновления статистики и блокирует ввод.
+    дорожка из 🐾. Показывается на время обновления и блокирует ввод.
     """
 
-    BODY = (
+    INTERVAL = dog_art.FRAME_MS / 1000
-        "            __",
+    PAW_SLOTS = 9
-        "       ____/  \\___",
-        "      / oo        \\____",
-        "     |      __         \\____",
-        "      \\____/  \\____________/",
-    )
-    LEGS = (
-        ("      ||    ||        \\   ~", "      ||    ||         \\_/"),
-        ("     //    \\\\       \\   ~~", "     //    \\\\        \\_/"),
-        ("      ||    ||        \\     ~", "      ||    ||         \\_/"),
-        ("     \\\\    //       \\    ~~", "     \\\\    //        \\_/"),
-    )
-    CAPTION = "Обновление статистики…"
-    INTERVAL = 0.12
 
     frame = reactive(0)
 
     def __init__(self, *args: Any, **kwargs: Any) -> None:
         super().__init__(*args, **kwargs)
         self._timer: Timer | None = None
+        self._frames: list[bytes] | None = None
 
     @property
     def running(self) -> bool:
         """Идёт ли анимация."""
         return self._timer is not None
 
+    @property
+    def frame_count(self) -> int:
+        return dog_art.FRAME_COUNT
+
     def start(self) -> None:
         """Запустить анимацию (идемпотентно)."""
         if self._timer is None:
@@ -103,29 +94,53 @@ class DogLoader(Static):
             self._timer = None
 
     def _next_frame(self) -> None:
-        self.frame = (self.frame + 1) % len(self.LEGS)
+        self.frame = (self.frame + 1) % dog_art.FRAME_COUNT
 
-    def _art(self) -> str:
+    def _get_frames(self) -> list[bytes]:
-        index = self.frame % len(self.LEGS)
+        if self._frames is None:
-        legs1, legs2 = self.LEGS[index]
+            self._frames = dog_art.decode_frames()
-        return "\n".join([*self.BODY, legs1, legs2])
+        return self._frames
 
-    def _paws(self) -> str:
+    def _paws(self, index: int, width: int) -> str:
-        index = self.frame % len(self.LEGS)
+        cells = "".join(
-        return " ".join("🐾" if (i + index) % 2 == 0 else "  " for i in range(8))
+            "🐾 " if (i + index) % 2 == 0 else "   "
+            for i in range(self.PAW_SLOTS)
+        ).rstrip()
+        pad = max(0, (width - len(cells)) // 2)
+        return " " * pad + cells
 
     def render(self) -> Any:
+        frames = self._get_frames()
+        data = frames[self.frame % len(frames)]
+        width, px_height = dog_art.WIDTH, dog_art.PX_HEIGHT
+        palette = dog_art.PALETTE
         theme = self.app.current_theme
-        body = Text(self._art(), style=f"bold {theme.accent}", justify="center")
+
-        paws = Text(self._paws(), style=str(theme.secondary), justify="center")
+        text = Text(justify="center", no_wrap=True)
-        caption = Text(self.CAPTION, style=f"bold {theme.foreground}", justify="center")
+        for y in range(0, px_height, 2):
-        content = Text("\n").join([body, Text(), paws, Text(), caption])
+            for x in range(width):
-        return Panel(
+                top = data[y * width + x]
-            Align.center(content, vertical="middle"),
+                bottom = data[(y + 1) * width + x] if y + 1 < px_height else 0
-            title="[b]🐕 selectel-ml-tui[/b]",
+                if top == 0 and bottom == 0:
-            border_style=str(theme.primary),
+                    text.append(" ")
-            padding=(1, 4),
+                elif top == 0:
+                    r, g, b = palette[bottom]
+                    text.append("▄", style=f"#{r:02x}{g:02x}{b:02x}")
+                elif bottom == 0:
+                    r, g, b = palette[top]
+                    text.append("▀", style=f"#{r:02x}{g:02x}{b:02x}")
+                else:
+                    rt, gt, bt = palette[top]
+                    rb, gb, bb = palette[bottom]
+                    text.append(
+                        "▀",
+                        style=f"#{rt:02x}{gt:02x}{bt:02x} on #{rb:02x}{gb:02x}{bb:02x}",
                     )
+            if y + 2 < px_height:
+                text.append("\n")
+        text.append("\n\n")
+        text.append(self._paws(self.frame, width), style=str(theme.secondary))
+        return text
 
     @on(InputEvent)
     def _block_input(self, event: InputEvent) -> None:

src/selectel_ml_tui/ui/dog_art.py

@@ -0,0 +1,170 @@
+"""Кадры анимации индикатора-собачки (авто-сгенерировано, не редактировать).
+
+Источник: 236205.gif; квантование в палитру, фон прозрачный (индекс 0).
+Кадр хранится как 64x42 индексов палитры (по строке).
+"""
+
+from __future__ import annotations
+
+import base64
+import zlib
+
+WIDTH = 64
+PX_HEIGHT = 42
+FRAME_COUNT = 12
+FRAME_MS = 40
+
+# Индекс 0 — прозрачный фон; остальные — RGB кадров GIF.
+PALETTE: tuple[tuple[int, int, int], ...] = (
+    (0,0,0), (255,255,255), (255,243,255), (255,255,238), (255,255,227), (255,255,221),
+    (255,255,207), (255,250,188), (250,255,245), (250,255,226), (249,251,237),
+    (246,248,245), (250,251,216), (248,248,214), (244,244,216), (246,242,193),
+    (239,249,234), (238,241,219), (236,237,211), (237,236,201), (231,239,224),
+    (183,246,251), (238,228,215), (246,219,178), (253,205,185), (253,202,176),
+    (250,197,180), (249,195,173), (240,190,172), (237,185,168), (224,229,216),
+    (222,221,200), (220,206,188), (221,184,175), (204,207,201), (198,189,183),
+    (185,187,181), (164,194,224), (213,166,158), (189,157,150), (163,168,178),
+    (155,155,159), (183,136,134), (142,136,134), (231,93,136), (159,104,113),
+    (127,137,174), (122,115,122), (98,125,184), (103,106,127), (104,98,108),
+    (98,89,96), (83,92,132), (81,82,104), (233,74,126), (205,57,101), (145,65,86),
+    (145,41,56), (138,8,35), (130,6,27), (124,7,27), (123,0,17), (85,73,86),
+    (74,70,87), (69,71,98), (68,62,77), (82,50,69), (85,28,47), (111,6,22), (62,68,99),
+    (61,61,85), (59,57,79), (61,57,72), (57,53,72), (58,52,68), (57,51,66), (58,50,65),
+    (56,50,65), (55,50,66), (55,49,65), (55,49,64), (57,48,64), (55,48,64), (58,44,60),
+    (54,51,69), (54,49,67), (54,49,65), (53,49,65), (54,49,64), (54,48,65), (54,48,64),
+    (53,48,65), (53,48,64), (54,48,63), (53,48,63), (54,47,64), (53,47,64), (54,47,63),
+    (53,47,63), (53,47,62), (53,46,62), (53,45,60), (48,51,75), (51,49,65), (52,48,64),
+    (52,47,64), (50,48,64), (52,48,63), (52,47,63), (52,46,63), (51,47,63), (49,47,63),
+    (52,47,62), (52,46,61), (51,46,62), (48,46,61), (51,45,62), (51,45,59), (46,44,61),
+    (49,43,59), (47,42,59), (44,42,59), (41,37,70), (47,40,55), (42,38,55), (41,36,54),
+    (39,33,52), (28,23,41),
+)
+
+_DATA_B64 = (
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+)
+
+
+def decode_frames() -> list[bytes]:
+    """Вернуть список кадров: каждый — 64*42 байт индексов палитры."""
+    raw = zlib.decompress(base64.b64decode(_DATA_B64))
+    size = WIDTH * PX_HEIGHT
+    return [raw[i * size:(i + 1) * size] for i in range(FRAME_COUNT)]

tests/test_tui.py

@@ -20,6 +20,7 @@ from selectel_ml_tui.models import (
 )
 from selectel_ml_tui.services import DashboardData
 from selectel_ml_tui.storage import Storage
+from selectel_ml_tui.ui import dog_art
 from selectel_ml_tui.ui.app import DogLoader, SelectelMLTUI
 
 
@@ -389,9 +390,25 @@ async def test_dog_loader_animates(tmp_path) -> None:
         loader.add_class("visible")
         loader.start()
         assert loader.running
-        first = loader.render()
+        assert loader.frame_count == dog_art.FRAME_COUNT
-        await pilot.pause(0.4)
+        first_frame = loader.frame
-        second = loader.render()
+        first = str(loader.render())
-        assert first != second
+        await pilot.pause(0.3)
+        assert loader.frame != first_frame
+        assert str(loader.render()) != first
+        # дорожка из лапок присутствует
+        assert "🐾" in str(loader.render())
         loader.stop()
         assert not loader.running
+
+
+def test_dog_art_frames() -> None:
+    frames = dog_art.decode_frames()
+    assert len(frames) == dog_art.FRAME_COUNT
+    size = dog_art.WIDTH * dog_art.PX_HEIGHT
+    assert all(len(f) == size for f in frames)
+    # индексы палитры в допустимом диапазоне, фон = 0
+    assert all(b < len(dog_art.PALETTE) for f in frames for b in f)
+    assert dog_art.FRAME_MS == 40
+    # кадры различаются (анимация)
+    assert len({bytes(f) for f in frames}) > 1