如何在离线绘图上自定义或禁用右键菜单？
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【中文标题】如何在离线绘图上自定义或禁用右键菜单？【英文标题】：How to customise or disable right click menu on offline plotly plot? 【发布时间】：2021-11-23 18:51:14 【问题描述】：我正在以与此代码类似的方式创建一个离线情节图：
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtWidgets import QApplication, QMainWindow
import plotly.graph_objects as go
import plotly
import numpy as np
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
# some example data
x = np.arange(1000)
y = x**2
# create the plotly figure
fig = go.Figure(go.Scatter(x=x, y=y))
# we create html code of the figure
html = '<html><body>'
html += plotly.offline.plot(fig, output_type='div', include_plotlyjs='cdn')
html += '</body></html>'
# we create an instance of QWebEngineView and set the html code
plot_widget = QWebEngineView()
plot_widget.setHtml(html)
# set the QWebEngineView instance as main widget
self.setCentralWidget(plot_widget)
if __name__ == '__main__':
app = QApplication([])
window = MainWindow()
window.show()
app.exec_()
通过鼠标左键单击我可以访问导航（如缩放平移），但右键单击目前对我来说绝对没用，所以我想将我自己的操作放在右键菜单中，或者如果它是至少不可能禁用它。有没有办法在情节中做到这一点？
【问题讨论】：
【参考方案1】：您必须重写 contextMenuEvent 方法并添加所需的 QActions 和 QMenus。
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtWebEngineWidgets import QWebEngineView
import plotly.graph_objects as go
import plotly
import numpy as np
class WebEngineView(QWebEngineView):
def contextMenuEvent(self, event):
menu = self.page().createStandardContextMenu()
menu.addSeparator()
custom_action = menu.addAction("Custom Action")
custom_action.triggered.connect(self.handle_custom_action)
menu.exec_(event.globalPos())
def handle_custom_action(self):
print("custom_action")
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
x = np.arange(1000)
y = x ** 2
fig = go.Figure(go.Scatter(x=x, y=y))
html = "".join(
[
"<html><body>",
plotly.offline.plot(fig, output_type="div", include_plotlyjs="cdn"),
"</body></html>",
]
)
plot_widget = WebEngineView()
plot_widget.setHtml(html)
self.setCentralWidget(plot_widget)
if __name__ == "__main__":
app = QApplication([])
window = MainWindow()
window.show()
app.exec_()
如果要禁用上下文菜单，则必须将 Qt.NoContextMenu 设置为 contextMenuPolicy：
plot_widget.setContextMenuPolicy(Qt.NoContextMenu)
【讨论】：
谢谢！它工作得几乎完美，有没有办法也可以从菜单中删除默认操作？ @Flash333 只更改为menu = QMenu()以上是关于如何在离线绘图上自定义或禁用右键菜单？的主要内容，如果未能解决你的问题，请参考以下文章