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Claude Project Manager
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views/widgets/language_dropdown.py
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203
views/widgets/language_dropdown.py
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# Path: views/widgets/language_dropdown.py
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"""
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Benutzerdefiniertes Dropdown-Widget für die Sprachauswahl mit Flaggen-Icons.
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"""
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import os
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from PyQt5.QtWidgets import (QWidget, QComboBox, QLabel, QHBoxLayout,
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QVBoxLayout, QFrame, QListWidget, QListWidgetItem,
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QAbstractItemView, QApplication)
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from PyQt5.QtCore import Qt, QSize, QEvent, pyqtSignal
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from PyQt5.QtGui import QIcon, QPainter, QPen, QColor, QCursor
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class LanguageDropdown(QWidget):
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"""Benutzerdefiniertes Dropdown für die Sprachauswahl mit Flaggen."""
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def __init__(self, language_manager):
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super().__init__()
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self.language_manager = language_manager
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self.is_open = False
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self.languages = {}
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self.current_language = self.language_manager.get_current_language()
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# QApplication-Instanz merken, um einen Event-Filter installieren zu können
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self.app = QApplication.instance()
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# Verfügbare Sprachen aus dem Manager holen
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self.available_languages = self.language_manager.get_available_languages()
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self.init_ui()
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# Verbinde Signal des Language Managers
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self.language_manager.language_changed.connect(self.on_language_changed)
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def init_ui(self):
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"""Initialisiert die Benutzeroberfläche."""
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layout = QVBoxLayout(self)
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layout.setContentsMargins(0, 0, 0, 0)
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layout.setSpacing(0)
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# Container für die aktuelle Sprachauswahl
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self.current_language_container = QFrame()
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self.current_language_container.setObjectName("languageSelector")
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self.current_language_container.setCursor(Qt.PointingHandCursor)
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self.current_language_container.setStyleSheet("""
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QFrame#languageSelector {
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background-color: transparent;
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border-radius: 4px;
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}
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QFrame#languageSelector:hover {
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background-color: rgba(200, 200, 200, 30);
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}
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""")
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current_layout = QHBoxLayout(self.current_language_container)
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current_layout.setContentsMargins(5, 5, 5, 5)
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# Icon der aktuellen Sprache
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self.current_flag = QLabel()
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self.current_flag.setFixedSize(24, 16) # Correct flag aspect ratio
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# Pfad zum Icon
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icon_path = self.get_language_icon_path(self.current_language)
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if icon_path:
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self.current_flag.setPixmap(QIcon(icon_path).pixmap(QSize(24, 16)))
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current_layout.addWidget(self.current_flag)
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# Kleiner Pfeil nach unten
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arrow_label = QLabel("▼")
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arrow_label.setStyleSheet("font-size: 8px; color: #888888;")
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current_layout.addWidget(arrow_label)
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layout.addWidget(self.current_language_container)
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# Dropdown-Liste (anfangs versteckt)
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self.dropdown_list = QListWidget()
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self.dropdown_list.setWindowFlags(Qt.Popup | Qt.FramelessWindowHint)
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self.dropdown_list.setFocusPolicy(Qt.NoFocus)
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self.dropdown_list.setMouseTracking(True)
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self.dropdown_list.setFrameShape(QFrame.NoFrame)
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self.dropdown_list.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
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self.dropdown_list.setEditTriggers(QAbstractItemView.NoEditTriggers)
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self.dropdown_list.setSelectionMode(QAbstractItemView.NoSelection)
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self.dropdown_list.setStyleSheet("""
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QListWidget {
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background-color: white;
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border: 1px solid #CCCCCC;
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border-radius: 5px;
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padding: 5px;
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}
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QListWidget::item {
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padding: 4px;
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border-radius: 3px;
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}
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QListWidget::item:hover {
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background-color: #F0F0F0;
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}
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""")
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# Sprachen zum Dropdown hinzufügen
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self.populate_dropdown()
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# Event-Verbindungen
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self.current_language_container.mousePressEvent = self.toggle_dropdown
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self.dropdown_list.itemClicked.connect(self.on_language_selected)
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# Zugänglichkeit mit Tastaturfokus
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self.setFocusPolicy(Qt.StrongFocus)
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self.current_language_container.setFocusPolicy(Qt.StrongFocus)
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def get_language_icon_path(self, language_code):
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"""Gibt den Pfad zum Icon für den angegebenen Sprachcode zurück."""
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# Projektbasis-Verzeichnis ermitteln
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base_dir = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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icon_path = os.path.join(base_dir, "resources", "icons", f"{language_code}.svg")
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if os.path.exists(icon_path):
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return icon_path
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return None
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def populate_dropdown(self):
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"""Füllt das Dropdown mit den verfügbaren Sprachen."""
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self.dropdown_list.clear()
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self.languages = {}
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for code, name in self.available_languages.items():
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item = QListWidgetItem(name)
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# Icon erstellen
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icon_path = self.get_language_icon_path(code)
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if icon_path:
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item.setIcon(QIcon(icon_path))
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# Sprach-Code speichern
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item.setData(Qt.UserRole, code)
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# Zum Dropdown hinzufügen
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self.dropdown_list.addItem(item)
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self.languages[code] = item
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def toggle_dropdown(self, event):
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"""Öffnet oder schließt das Dropdown-Menü."""
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if not self.is_open:
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# Position des Dropdowns unter dem Button berechnen
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pos = self.current_language_container.mapToGlobal(self.current_language_container.rect().bottomLeft())
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self.dropdown_list.setGeometry(pos.x(), pos.y(), 120, 120) # Größe anpassen
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self.dropdown_list.show()
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self.is_open = True
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if self.app:
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self.app.installEventFilter(self)
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else:
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self.dropdown_list.hide()
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self.is_open = False
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if self.app:
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self.app.removeEventFilter(self)
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def on_language_selected(self, item):
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"""Wird aufgerufen, wenn eine Sprache im Dropdown ausgewählt wird."""
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language_code = item.data(Qt.UserRole)
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# Sprache wechseln
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if language_code != self.current_language:
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self.language_manager.change_language(language_code)
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# Dropdown schließen
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self.dropdown_list.hide()
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self.is_open = False
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if self.app:
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self.app.removeEventFilter(self)
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def on_language_changed(self, language_code):
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"""Wird aufgerufen, wenn sich die Sprache im LanguageManager ändert."""
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self.current_language = language_code
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# Icon aktualisieren
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icon_path = self.get_language_icon_path(language_code)
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if icon_path:
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self.current_flag.setPixmap(QIcon(icon_path).pixmap(QSize(24, 16)))
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# Texte aktualisieren (falls vorhanden)
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if hasattr(self.parent(), "update_texts"):
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self.parent().update_texts()
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def keyPressEvent(self, event):
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"""Behandelt Tastatureingaben für verbesserte Zugänglichkeit."""
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if event.key() == Qt.Key_Space or event.key() == Qt.Key_Return:
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self.toggle_dropdown(None)
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else:
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super().keyPressEvent(event)
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def eventFilter(self, obj, event):
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"""Schließt das Dropdown, wenn außerhalb geklickt wird."""
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if self.is_open and event.type() == QEvent.MouseButtonPress:
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# Klickposition relativ zum Dropdown ermitteln
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if not self.dropdown_list.geometry().contains(event.globalPos()) and \
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not self.current_language_container.geometry().contains(
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self.mapFromGlobal(event.globalPos())):
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self.dropdown_list.hide()
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self.is_open = False
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if self.app:
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self.app.removeEventFilter(self)
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return super().eventFilter(obj, event)
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