173 lines
4.8 KiB
Python
173 lines
4.8 KiB
Python
"""主题管理：注册 Calman 风格深色主题 + 提供运行时切换。
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主题在启动时通过 ``apply_initial_theme(root_style)`` 注入到 ttkbootstrap，
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当前选择持久化到 ``settings/ui_preferences.json``。运行时调用
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``toggle_theme(root_style)`` / ``set_theme(root_style, name)`` 可即时切换，
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并自动重新调用 ``apply_modern_styles()`` 让自定义样式跟上新色板。
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"""
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from __future__ import annotations
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import json
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from pathlib import Path
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from typing import Optional
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from ttkbootstrap.style import Style, ThemeDefinition
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from app.views.modern_styles import apply_modern_styles
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_PREFS_PATH = Path("settings/ui_preferences.json")
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# 浅色主题：自定义轻量蓝灰色板，恢复旧版浅色观感
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LIGHT_THEME = "calman_light"
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# 深色主题：自定义 Calman 风格
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DARK_THEME = "calman_dark"
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_LEGACY_LIGHT_THEMES = {"yeti"}
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_CALMAN_LIGHT_COLORS = {
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"primary": "#1755a6",
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"secondary": "#2B6CB0",
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"success": "#2F9E44",
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"info": "#247BA0",
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"warning": "#C98700",
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"danger": "#CC3300",
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"light": "#F7FAFC",
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"dark": "#1F2A36",
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"bg": "#F5F8FB",
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"fg": "#1F2933",
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"selectbg": "#2B6CB0",
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"selectfg": "#FFFFFF",
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"border": "#C8D4E3",
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"inputfg": "#243240",
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"inputbg": "#FFFFFF",
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"active": "#D9E6F2",
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}
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# ----------------------------------------------------------------------
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# Calman 风格深色主题色板
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# ----------------------------------------------------------------------
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_CALMAN_DARK_COLORS = {
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# "primary": "#2A2F36",
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# "secondary": "#444A51",
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"primary": "#6FAFCC",
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"secondary": "#AEAEAE",
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"success": "#4FB960",
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"info": "#6FAFCC",
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"warning": "#F2A93B",
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"danger": "#E0524A",
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"light": "#BFC6CE", # 高亮文本
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"dark": "#0D1014", # 最深背景（侧栏底色）
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"bg": "#1B1F24", # 主窗口背景
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"fg": "#E4E8EE", # 主文本颜色
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"selectbg": "#5A6169",
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"selectfg": "#E4E8EE",
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"border": "#2A2F36",
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"inputfg": "#E4E8EE",
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"inputbg": "#24292F",
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"active": "#2A2F36",
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}
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def register_themes() -> None:
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"""把自定义深色主题注册到 ttkbootstrap（可重复调用，幂等）。"""
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style = Style()
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if LIGHT_THEME not in style.theme_names():
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light_def = ThemeDefinition(
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name=LIGHT_THEME,
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themetype="light",
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colors=_CALMAN_LIGHT_COLORS,
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)
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style.register_theme(light_def)
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if DARK_THEME in style.theme_names():
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return
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dark_def = ThemeDefinition(
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name=DARK_THEME,
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themetype="dark",
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colors=_CALMAN_DARK_COLORS,
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)
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style.register_theme(dark_def)
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def _normalize_theme_name(name: Optional[str]) -> str:
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if not name or name in _LEGACY_LIGHT_THEMES:
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return LIGHT_THEME
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return name
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# ----------------------------------------------------------------------
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# 偏好持久化
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# ----------------------------------------------------------------------
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def _read_prefs() -> dict:
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try:
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return json.loads(_PREFS_PATH.read_text(encoding="utf-8"))
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except (FileNotFoundError, json.JSONDecodeError):
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return {}
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def _write_prefs(data: dict) -> None:
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try:
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_PREFS_PATH.parent.mkdir(parents=True, exist_ok=True)
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_PREFS_PATH.write_text(
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json.dumps(data, indent=2, ensure_ascii=False), encoding="utf-8"
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)
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except OSError:
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# 写入失败不应影响 UI
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pass
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def get_saved_theme() -> Optional[str]:
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return _read_prefs().get("theme")
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def save_theme(name: str) -> None:
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prefs = _read_prefs()
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prefs["theme"] = name
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_write_prefs(prefs)
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# ----------------------------------------------------------------------
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# 主题应用 / 切换
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# ----------------------------------------------------------------------
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def apply_initial_theme() -> str:
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"""启动时调用：注册主题 + 加载偏好 + 切到对应主题。
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返回最终生效的主题名。
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"""
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register_themes()
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name = _normalize_theme_name(get_saved_theme())
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style = Style()
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if name not in style.theme_names():
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name = LIGHT_THEME
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style.theme_use(name)
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apply_modern_styles()
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return name
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def set_theme(name: str) -> str:
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"""切换到指定主题，持久化偏好，并刷新自定义样式。"""
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register_themes()
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name = _normalize_theme_name(name)
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style = Style()
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if name not in style.theme_names():
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name = LIGHT_THEME
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style.theme_use(name)
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apply_modern_styles()
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save_theme(name)
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return name
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def toggle_theme() -> str:
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"""在浅 / 深之间切换。返回新主题名。"""
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style = Style()
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current = style.theme.name
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target = DARK_THEME if current != DARK_THEME else LIGHT_THEME
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return set_theme(target)
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def is_dark() -> bool:
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return Style().theme.name == DARK_THEME
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