PySide6 실전 강좌 #6 설정 화면 — QSettings, 다크 테마, 데이터 백업

# src/daily/settings.py
from PySide6.QtCore import QSettings


class AppSettings:
    """QSettings를 감싸 키 오타와 타입 실수를 한곳에서 막는다."""

    def __init__(self) -> None:
        self._s = QSettings()

    @property
    def reminder_hour(self) -> int:
        return int(self._s.value("reminder/hour", 21))

    @reminder_hour.setter
    def reminder_hour(self, value: int) -> None:
        self._s.setValue("reminder/hour", value)

    @property
    def close_to_tray(self) -> bool:
        return self._s.value("window/close_to_tray", True, type=bool)

    @close_to_tray.setter
    def close_to_tray(self, value: bool) -> None:
        self._s.setValue("window/close_to_tray", value)

    @property
    def theme(self) -> str:                      # "system" | "light" | "dark"
        return str(self._s.value("appearance/theme", "system"))

    @theme.setter
    def theme(self, value: str) -> None:
        self._s.setValue("appearance/theme", value)

# src/daily/ui/settings_page.py (핵심만)
class SettingsPage(QWidget):
    def __init__(self, settings: AppSettings, reminder, main_window) -> None:
        super().__init__()
        self._settings = settings

        hour = QSpinBox()
        hour.setRange(0, 23)
        hour.setValue(settings.reminder_hour)
        hour.valueChanged.connect(self._on_hour_changed)

        close_tray = QCheckBox("닫기 버튼을 누르면 트레이로 숨기기")
        close_tray.setChecked(settings.close_to_tray)
        close_tray.toggled.connect(self._on_close_mode_changed)
        ...

    def _on_hour_changed(self, value: int) -> None:
        self._settings.reminder_hour = value
        self._reminder.set_hour(value)          # 실행 중인 리마인더에 즉시 반영

# src/daily/ui/theme.py (발췌)
DARK_QSS = """
QWidget { background: #1e1f22; color: #e6e6e6; }
QPushButton { background: #2d333b; border: 1px solid #444c56; padding: 6px 12px; border-radius: 4px; }
QPushButton:hover { background: #39404a; }
QListView { background: #16171a; border: none; }
"""


def apply_theme(app: QApplication, mode: str) -> None:
    if mode == "system":
        scheme = app.styleHints().colorScheme()          # OS의 라이트/다크 설정
        mode = "dark" if scheme == Qt.ColorScheme.Dark else "light"
    app.setStyleSheet(DARK_QSS if mode == "dark" else "")

def export_csv(repo: HabitRepository, path: Path) -> None:
    import csv

    with open(path, "w", newline="", encoding="utf-8") as f:
        writer = csv.writer(f)
        writer.writerow(["habit", "day"])
        for habit in repo.active_habits():
            for day in sorted(repo.checked_days(habit.id)):
                writer.writerow([habit.name, day])