qss

toolbox/codes/common/qss_reloader.py

@@ -0,0 +1,41 @@
+from pathlib import Path
+
+from PySide6.QtCore import QObject, QFileSystemWatcher
+
+
+class QssReloader(QObject):
+    instance = None
+
+    def __new__(cls, *args, **kwargs):
+        if cls.instance is None:
+            cls.instance = super().__new__(cls)
+        return cls.instance
+
+    def __init__(self):
+        super().__init__()
+        self.path2objs = {}
+        self.watcher = QFileSystemWatcher(self)
+        self.watcher.fileChanged.connect(self.on_file_changed)
+
+    def register(self, qss_path: str, ui_obj):
+        path = str(Path(qss_path).resolve())
+        obj_list = self.path2objs.setdefault(path, [])
+        if ui_obj not in obj_list:
+            obj_list.append(ui_obj)
+        if path not in self.watcher.files():
+            self.watcher.addPath(path)
+        self.apply_one(path, ui_obj)
+
+    def on_file_changed(self, path: str):
+        for obj in self.path2objs.get(path, []):
+            self.apply_one(path, obj)
+        if path not in self.watcher.files():
+            self.watcher.addPath(path)
+
+    @staticmethod
+    def apply_one(path: str, obj):
+        qss = Path(path).read_text(encoding="utf-8")
+        obj.setStyleSheet(qss)
+
+
+qss_reloader = QssReloader()