支持拖入视频文件，移除命令行参数

main.py

@@ -55,6 +55,7 @@ class FrameView(QLabel):
         self.setAlignment(Qt.AlignmentFlag.AlignCenter)
         self.setStyleSheet("background: #1a1a1a; border: 1px solid #333;")
         self.setMouseTracking(True)
+        self.setAcceptDrops(True)
 
         self._frame: Optional[np.ndarray] = None
         self._pixmap: Optional[QPixmap] = None
@@ -71,7 +72,8 @@ class FrameView(QLabel):
         self._block_clicks: bool = False
 
         self.on_point_selected = None
-        self.on_key_pressed = None     # 键盘回调
+        self.on_key_pressed = None
+        self.on_file_dropped = None
 
     @property
     def reference_ready(self) -> bool:
@@ -136,6 +138,15 @@ class FrameView(QLabel):
             self.on_key_pressed(event.key())
         super().keyPressEvent(event)
 
+    def dragEnterEvent(self, event) -> None:
+        if event.mimeData().hasUrls():
+            event.acceptProposedAction()
+
+    def dropEvent(self, event) -> None:
+        urls = event.mimeData().urls()
+        if urls and self.on_file_dropped:
+            self.on_file_dropped(urls[0].toLocalFile())
+
     def paintEvent(self, event) -> None:
         super().paintEvent(event)
         painter = QPainter(self)
@@ -242,6 +253,7 @@ class MainWindow(QMainWindow):
         self.frame_view = FrameView()
         self.frame_view.on_point_selected = self._on_point_changed
         self.frame_view.on_key_pressed = self._on_key_pressed
+        self.frame_view.on_file_dropped = self.load_video
 
         # 右侧面板（弹性宽度）
         panel = QWidget()
@@ -764,8 +776,6 @@ def main():
     """)
 
     window = MainWindow()
-    if len(sys.argv) > 1:
-        window.load_video(sys.argv[1])
     window.show()
     sys.exit(app.exec())