trav
b7f8761bd1
Snapshot of the existing codebase before working through the TASKS.md backlog. Real library data (data/) and the iTunes import fixture (itunes-test-library/) are gitignored.
97 lines
3.5 KiB
Python
97 lines
3.5 KiB
Python
"""App-wide theming: highlight color and UI/text scale, driven by Preferences.
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Everything that shows the highlight color (table/sidebar selection, the seek
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slider's filled groove, the visualizer bars) reads QPalette.Highlight, so
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recoloring is a palette swap. UI scale adjusts the app font, scrollbar
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dimensions, and (via MainWindow.apply_ui_metrics) table row heights.
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"""
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from PyQt6.QtGui import QPalette, QColor, QFontDatabase
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# The font the now-playing panel wants by default. Not bundled (it's a
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# proprietary Monotype face); the user is asked to install it and, if missing,
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# to pick a substitute on first run (see main.ensure_now_playing_font).
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CENTURY_GOTHIC = "Century Gothic"
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HIGHLIGHT_COLORS = {
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"blue": "#3584E4",
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"marigold": "#F5A623",
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"magenta": "#D6409F",
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"seafoam": "#7FD1AE",
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"gray": "#8A8A8A",
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}
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UI_SCALES = {
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"small": {"font_pt": 9, "scrollbar": 10, "row_height": 20, "header_strip": 28,
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"status_height": 22},
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"medium": {"font_pt": 11, "scrollbar": 14, "row_height": 24, "header_strip": 34,
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"status_height": 26},
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"large": {"font_pt": 13, "scrollbar": 18, "row_height": 28, "header_strip": 40,
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"status_height": 32},
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}
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_base_palette = None
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def highlight_color(prefs) -> QColor:
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return QColor(HIGHLIGHT_COLORS.get(prefs.get("highlight"),
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HIGHLIGHT_COLORS["blue"]))
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def scale_metrics(prefs) -> dict:
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return UI_SCALES.get(prefs.get("ui_scale"), UI_SCALES["medium"])
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def apply_theme(app, prefs):
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global _base_palette
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if _base_palette is None:
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_base_palette = QPalette(app.palette())
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color = highlight_color(prefs)
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# Black text on light highlights, white on dark
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luminance = (0.299 * color.red() + 0.587 * color.green()
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+ 0.114 * color.blue()) / 255
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text = QColor("black") if luminance > 0.6 else QColor("white")
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palette = QPalette(_base_palette)
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for group in (QPalette.ColorGroup.Active, QPalette.ColorGroup.Inactive):
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palette.setColor(group, QPalette.ColorRole.Highlight, color)
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palette.setColor(group, QPalette.ColorRole.HighlightedText, text)
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palette.setColor(group, QPalette.ColorRole.Accent, color)
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app.setPalette(palette)
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metrics = scale_metrics(prefs)
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font = app.font()
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font.setPointSize(metrics["font_pt"])
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app.setFont(font)
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bar = metrics["scrollbar"]
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app.setStyleSheet(f"""
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QScrollBar:vertical {{ width: {bar}px; }}
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QScrollBar:horizontal {{ height: {bar}px; }}
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QScrollBar::handle {{ min-height: {bar * 2}px; min-width: {bar * 2}px; }}
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""")
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def century_gothic_available() -> bool:
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"""True if the Century Gothic family is installed and resolvable by Qt."""
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return CENTURY_GOTHIC in QFontDatabase.families()
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def now_playing_font_family(prefs) -> str | None:
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"""Family the now-playing panel should use, or None for the app default.
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prefs["now_playing_font"] semantics:
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- missing/None : never set → prefer Century Gothic, fall back to default
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- "" : user chose "use default" → always the app default
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- "Family" : user picked a family → use it (if still installed)
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"""
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saved = prefs.get("now_playing_font")
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if saved == "":
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return None
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if saved: # a previously chosen family
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return saved if saved in QFontDatabase.families() else None
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# Never set: prefer Century Gothic when present, else default.
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return CENTURY_GOTHIC if century_gothic_available() else None
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