如何将圆形标记添加到嵌入在 QWebEngineView 中的渲染大叶地图？

您可以通过以下runJavaScript()方法执行javascript来添加标记：

import io
import sys

from jinja2 import Template

import folium

from PyQt5.QtCore import pyqtSignal, QObject, QTimer
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtWebEngineWidgets import QWebEngineView


class CoordinateProvider(QObject):
    coordinate_changed = pyqtSignal(float, float)

    def __init__(self, parent=None):
        super().__init__(parent)
        self._timer = QTimer(interval=1000)
        self._timer.timeout.connect(self.generate_coordinate)

    def start(self):
        self._timer.start()

    def stop(self):
        self._timer.stop()

    def generate_coordinate(self):
        import random

        center_lat, center_lng = 41.8828, 12.4761
        x, y = (random.uniform(-0.001, 0.001) for _ in range(2))
        latitude = center_lat + x
        longitude = center_lng + y
        self.coordinate_changed.emit(latitude, longitude)


class Window(QMainWindow):
    def __init__(self):
        super().__init__()
        coordinate = (41.8828, 12.4761)
        self.map = folium.Map(
            zoom_start=18, location=coordinate, control_scale=True, tiles=None
        )
        folium.raster_layers.TileLayer(
            tiles="http://mt1.google.com/vt/lyrs=m&h1=p1Z&x={x}&y={y}&z={z}",
            name="Standard Roadmap",
            attr="Google Map",
        ).add_to(self.map)
        folium.raster_layers.TileLayer(
            tiles="http://mt1.google.com/vt/lyrs=s&h1=p1Z&x={x}&y={y}&z={z}",
            name="Satellite Only",
            attr="Google Map",
        ).add_to(self.map)
        folium.raster_layers.TileLayer(
            tiles="http://mt1.google.com/vt/lyrs=y&h1=p1Z&x={x}&y={y}&z={z}",
            name="Hybrid",
            attr="Google Map",
        ).add_to(self.map)
        folium.LayerControl().add_to(self.map)
        folium.Marker(coordinate).add_to(self.map)

        data = io.BytesIO()
        self.map.save(data, close_file=False)

        self.map_view = QWebEngineView()
        self.map_view.setHtml(data.getvalue().decode())

        self.setCentralWidget(self.map_view)

    def add_marker(self, latitude, longitude):
        js = Template(
            """
        L.marker([{{latitude}}, {{longitude}}] )
            .addTo({{map}});
        L.circleMarker(
            [{{latitude}}, {{longitude}}], {
                "bubblingMouseEvents": true,
                "color": "#3388ff",
                "dashArray": null,
                "dashOffset": null,
                "fill": false,
                "fillColor": "#3388ff",
                "fillOpacity": 0.2,
                "fillRule": "evenodd",
                "lineCap": "round",
                "lineJoin": "round",
                "opacity": 1.0,
                "radius": 2,
                "stroke": true,
                "weight": 5
            }
        ).addTo({{map}});
        """
        ).render(map=self.map.get_name(), latitude=latitude, longitude=longitude)
        self.map_view.page().runJavaScript(js)


def main():
    app = QApplication(sys.argv)

    window = Window()
    window.showMaximized()

    provider = CoordinateProvider()
    provider.coordinate_changed.connect(window.add_marker)
    provider.start()

    sys.exit(app.exec())


if __name__ == "__main__":
    main()