159 lines
5.5 KiB
Python
159 lines
5.5 KiB
Python
"""
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sn_plan41/ui/tab_b_ui.py – UI für Tab B (Druck)
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"""
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from __future__ import annotations
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from typing import Optional
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from sn_basis.functions.qt_wrapper import (
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QWidget,
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QVBoxLayout,
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QLabel,
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QComboBox,
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)
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from sn_basis.functions.qgisui_wrapper import iface
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from sn_basis.functions.variable_wrapper import get_variable, set_variable
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# Services (werden von DockWidget injiziert)
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from sn_basis.modules.Pruefmanager import Pruefmanager
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from sn_basis.modules.DataGrabber import DataGrabber
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from sn_plan41.ui.tab_b_logic import (
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TabBLogic,
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MASSSTAB_WIE_KARTENFENSTER,
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PLOTMASSSTAB_BY_AUSWAHL,
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)
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THEMA_VAR = "tab_b_thema"
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THEMA_PLACEHOLDER = "Thema wählen"
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THEMA_38 = "§38"
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THEMA_41 = "§41"
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MASSSTAB_VAR = "tab_b_massstab"
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class TabB(QWidget):
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"""
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UI-Klasse für Tab B (Druck) des Plan41-Plugins.
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Zuständig für:
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- Auswahl des Druckthemas
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- Auswahl der Druckparameter
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- Start der Vorlagenanlage (Druck über QGIS-Druckfunktion)
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Services (Pruefmanager, DataGrabber) werden zur Laufzeit vom DockWidget injiziert.
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Alle fachlichen Prüfungen laufen über den zentralen Pruefmanager.
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"""
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tab_title = "Druck" #: Tab-Titel für BaseDockWidget
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def __init__(self, parent: Optional[QWidget] = None):
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"""
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Initialisiert die UI-Struktur.
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Services werden später über :meth:`set_services` injiziert.
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:param parent: Parent-Widget (typischerweise DockWidget)
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"""
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super().__init__(parent)
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# Services (werden von DockWidget gesetzt)
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self.pruefmanager: Optional[Pruefmanager] = None
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self.logic: Optional[TabBLogic] = None
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self._thema_combo: Optional[QComboBox] = None
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self._massstab_combo: Optional[QComboBox] = None
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self._build_ui()
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self._restore_state()
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def set_services(self, pruefmanager: Pruefmanager, data_grabber: DataGrabber) -> None:
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"""Injiziert Services vom übergeordneten DockWidget."""
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_ = data_grabber
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self.pruefmanager = pruefmanager
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self.logic = TabBLogic(pruefmanager=self.pruefmanager)
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if self._thema_combo:
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self.logic.set_kartenname_for_thema(self._thema_combo.currentText())
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if self._massstab_combo:
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self.logic.set_plotmassstab_for_auswahl(
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self._massstab_combo.currentText(),
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self._get_current_canvas_scale(),
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)
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def _build_ui(self) -> None:
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"""Erstellt die reduzierte UI für die Themenauswahl."""
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main_layout = QVBoxLayout()
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main_layout.setSpacing(4)
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main_layout.setContentsMargins(4, 4, 4, 4)
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thema_label = QLabel("Thema")
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thema_label.setStyleSheet("font-weight: bold; margin-top: 6px;")
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main_layout.addWidget(thema_label)
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self._thema_combo = QComboBox(self)
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self._thema_combo.addItem(THEMA_PLACEHOLDER)
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self._thema_combo.addItem(THEMA_38)
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self._thema_combo.addItem(THEMA_41)
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self._thema_combo.currentTextChanged.connect(self._on_thema_changed)
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main_layout.addWidget(self._thema_combo)
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massstab_label = QLabel("Massstab")
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massstab_label.setStyleSheet("font-weight: bold; margin-top: 6px;")
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main_layout.addWidget(massstab_label)
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self._massstab_combo = QComboBox(self)
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self._massstab_combo.addItem(MASSSTAB_WIE_KARTENFENSTER)
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self._massstab_combo.addItems(list(PLOTMASSSTAB_BY_AUSWAHL.keys()))
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self._massstab_combo.currentTextChanged.connect(self._on_massstab_changed)
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main_layout.addWidget(self._massstab_combo)
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main_layout.addStretch(1)
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self.setLayout(main_layout)
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def _restore_state(self) -> None:
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"""Stellt die gespeicherten Combobox-Zustände wieder her."""
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if not self._thema_combo or not self._massstab_combo:
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return
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saved_thema = get_variable(THEMA_VAR, scope="project")
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if saved_thema in (THEMA_38, THEMA_41):
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self._thema_combo.setCurrentText(saved_thema)
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else:
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self._thema_combo.setCurrentText(THEMA_PLACEHOLDER)
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saved_massstab = get_variable(MASSSTAB_VAR, scope="project")
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valid_massstaebe = [MASSSTAB_WIE_KARTENFENSTER, *PLOTMASSSTAB_BY_AUSWAHL.keys()]
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if saved_massstab in valid_massstaebe:
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self._massstab_combo.setCurrentText(saved_massstab)
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else:
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self._massstab_combo.setCurrentText(MASSSTAB_WIE_KARTENFENSTER)
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def _on_thema_changed(self, value: str) -> None:
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"""Persistiert die Themenauswahl und setzt den Kartennamen."""
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if value in (THEMA_38, THEMA_41):
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set_variable(THEMA_VAR, value, scope="project")
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else:
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set_variable(THEMA_VAR, "", scope="project")
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if self.logic:
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self.logic.set_kartenname_for_thema(value)
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def _on_massstab_changed(self, value: str) -> None:
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"""Persistiert Maßstabsauswahl und setzt ``sn_plotmassstab``."""
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set_variable(MASSSTAB_VAR, value, scope="project")
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if self.logic:
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self.logic.set_plotmassstab_for_auswahl(value, self._get_current_canvas_scale())
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def _get_current_canvas_scale(self) -> float | None:
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"""Liest den aktuellen Maßstab aus der Kartensicht."""
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try:
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canvas = iface.mapCanvas()
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if canvas is None:
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return None
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scale = canvas.scale()
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return float(scale) if scale else None
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except Exception:
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return None
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