130 lines
5.5 KiB
Python
130 lines
5.5 KiB
Python
"""Theme persistence and Fluent Widgets integration."""
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import ctypes
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import os
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from PySide6.QtCore import QObject, QSettings, Qt
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from PySide6.QtGui import QColor, QPalette
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from qfluentwidgets import Theme, setTheme, setThemeColor
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# Fluent widgets restyle themselves on setTheme(); QMainWindow, the native
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# QTabWidget/QStatusBar and the Windows title bar keep the OS palette unless
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# the palette, an app stylesheet and the DWM title bar attributes follow suit
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# (same approach as DLPilot app_fluent.py).
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_SURFACES = {
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False: {"window": "#f4f6f8", "base": "#ffffff", "text": "#1f2328",
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"dim": "#57606a", "border": "#d8dee4", "selected_text": "#ffffff"},
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True: {"window": "#202020", "base": "#2b2b2b", "text": "#f5f5f5",
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"dim": "#9a9a9a", "border": "#3a3a3a", "selected_text": "#1f2328"},
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}
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class ThemeManager(QObject):
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"""Keep the appearance choice persistent and synchronized with Qt."""
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MODES = {"system", "light", "dark", "dark1", "dark2"}
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_THEMES = {
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"system": Theme.AUTO,
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"light": Theme.LIGHT,
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"dark": Theme.DARK,
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"dark1": Theme.DARK,
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"dark2": Theme.DARK,
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}
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_ACCENTS = {
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"light": "#0f6cbd",
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"dark": "#f2c94c",
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"dark1": "#5aa9e6",
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"dark2": "#35c6c8",
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}
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def __init__(self, app):
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super().__init__(app)
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self.app = app
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self.window = None
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self.settings = QSettings("LT8619C-Tools", "SerialMate")
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mode = self.settings.value("appearance/theme", "system")
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self.mode = mode if mode in self.MODES else "system"
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self.apply()
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app.styleHints().colorSchemeChanged.connect(self.apply)
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def set_window(self, window):
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"""Register the main window so the native title bar follows the theme."""
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self.window = window
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self._apply_titlebar()
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def set_mode(self, mode):
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if mode not in self.MODES:
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raise ValueError(f"Unknown theme: {mode}")
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self.mode = mode
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self.settings.setValue("appearance/theme", mode)
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self.apply()
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def is_dark(self):
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if self.mode in {"dark", "dark1", "dark2"}:
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return True
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return self.mode == "system" and self.app.styleHints().colorScheme() == Qt.ColorScheme.Dark
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def apply(self, *_):
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is_dark = self.is_dark()
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setTheme(self._THEMES[self.mode])
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setThemeColor(self._ACCENTS.get(self.mode, self._ACCENTS["light"]))
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self._apply_palette(is_dark)
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self._apply_titlebar()
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def _apply_palette(self, is_dark):
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"""Give native Qt surfaces the same colors as the Fluent widgets."""
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surface = _SURFACES[is_dark]
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accent = QColor(self._ACCENTS.get(self.mode, self._ACCENTS["light"]))
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palette = QPalette()
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for role, color in (
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(QPalette.Window, surface["window"]),
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(QPalette.Base, surface["base"]),
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(QPalette.AlternateBase, surface["base"]),
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(QPalette.Text, surface["text"]),
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(QPalette.WindowText, surface["text"]),
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(QPalette.Button, surface["base"]),
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(QPalette.ButtonText, surface["text"]),
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(QPalette.PlaceholderText, surface["dim"]),
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(QPalette.Highlight, accent),
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(QPalette.HighlightedText, surface["selected_text"]),
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(QPalette.ToolTipBase, surface["base"]),
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(QPalette.ToolTipText, surface["text"]),
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):
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palette.setColor(role, QColor(color))
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self.app.setPalette(palette)
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self.app.setStyleSheet(f"""
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QMainWindow, QWidget#root {{ background-color: {surface['window']}; color: {surface['text']}; }}
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QTabWidget::pane {{ background: {surface['base']}; border: 1px solid {surface['border']}; border-radius: 6px; }}
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QTabBar {{ qproperty-drawBase: 0; }}
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QTabBar::tab {{ background: transparent; color: {surface['dim']}; padding: 6px 16px;
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border: 1px solid transparent; border-top-left-radius: 6px;
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border-top-right-radius: 6px; }}
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QTabBar::tab:selected {{ background: {surface['base']}; color: {surface['text']};
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border: 1px solid {surface['border']}; }}
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QTabBar::tab:hover:!selected {{ background: {surface['base']}; }}
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QSplitter::handle {{ background: {surface['window']}; }}
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QStatusBar {{ background: {surface['window']}; color: {surface['dim']};
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border-top: 1px solid {surface['border']}; }}
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QToolTip {{ background-color: {surface['base']}; color: {surface['text']};
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border: 1px solid {surface['border']}; }}
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""")
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def _apply_titlebar(self):
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"""Ask DWM for a title bar in the current surface color (Win10/11)."""
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if self.window is None or os.name != "nt" or not hasattr(ctypes, "windll"):
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return
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try:
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hwnd = int(self.window.winId())
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dwm = ctypes.windll.dwmapi
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dark = ctypes.c_int(1 if self.is_dark() else 0)
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dwm.DwmSetWindowAttribute(hwnd, 20, ctypes.byref(dark), ctypes.sizeof(dark))
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surface = _SURFACES[self.is_dark()]
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dwm.DwmSetWindowAttribute(hwnd, 35, ctypes.byref(self._colorref(QColor(surface["window"]))), 4)
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dwm.DwmSetWindowAttribute(hwnd, 36, ctypes.byref(self._colorref(QColor(surface["text"]))), 4)
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except Exception:
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pass
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@staticmethod
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def _colorref(color):
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return ctypes.c_int(color.red() | (color.green() << 8) | (color.blue() << 16))
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