模拟鼠标拖动事件 PyQt5

Posted 2023-02-16

【中文标题】模拟鼠标拖动事件 PyQt5

【英文标题】：simulate mouse drag event PyQt5

【发布时间】：2021-06-02 19:13:27

【问题描述】：

我正在制作一个自动点击 QWebEngineView 小部件的机器人。

我想模拟鼠标拖动到那个小部件

即：-

在 QPoint(100,100) 上按鼠标左键

将鼠标移动到 QPoint(500,500)

松开鼠标左键

我试过这段代码，但它不起作用：

def drag_from_to(browser_widget, x1, y1, x2, y2):

    for child in browser_widget.findChildren(QtWidgets.QWidget):
        if (child.metaObject().className() == "QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget"):
            #I also tried sending the event to 'browser_widget' instead of 'child'
            event_press = QtGui.QMouseEvent(QtCore.QEvent.MouseButtonPress, QtCore.QPoint(x1, y1),
                                            QtCore.Qt.LeftButton, QtCore.Qt.LeftButton, QtCore.Qt.NoModifier, )
            QtCore.QCoreApplication.postEvent(child, event_press)

            event_move = QtGui.QMouseEvent(QtCore.QEvent.MouseMove, QtCore.QPoint(x2, y2),
                                           QtCore.Qt.LeftButton, QtCore.Qt.LeftButton, QtCore.Qt.NoModifier, )
            QtCore.QCoreApplication.postEvent(child, event_move)

            event_release = QtGui.QMouseEvent(QtCore.QEvent.MouseButtonRelease, QtCore.QPoint(x2, y2),
                                              QtCore.Qt.LeftButton, QtCore.Qt.LeftButton, QtCore.Qt.NoModifier, )
            QtCore.QCoreApplication.postEvent(child, event_release)
            return

编辑：我也尝试了 QTest.mouseMove()...它实际上移动了鼠标光标...但是，我希望 Bot 在后台运行...我希望用户能够使用他的计算机当机器人运行时

【问题讨论】：

这能回答你的问题吗？ How to test drag and drop behavior in PyQt?

不，QTest.mouseMove() 实际上会移动鼠标光标...我希望 Bot 在后台运行...我希望用户能够在 Bot 运行时使用他的计算机运行

【参考方案1】：

经过一番测试，我找到了解决办法：-

在发布新的 QEvent.MouseMove 后，我必须至少暂停代码执行 1 毫秒，我还必须将该事件顺序发送到两点之间线上的每个点 [例如：从 QPoint( x1, y1) 到 QPoint(x2, y2)]

这是工作代码：

def wait(ms): QTest.qWait(ms) #pauses the code without freezing the UI
def getIntEquidistantPoints(x1, y1, x2, y2):
    n = int(((((x2 - x1 )**2) + ((y2-y1)**2))**0.5))
    def lerp(v0, v1, i): return v0 + i * (v1 - v0)
    return [(int(x), int(y)) for x,y in [(lerp(x1,x2,1./n*i), lerp(y1,y2,1./n*i)) for i in range(n+1)]]
def drag_from_to(browser_widget, x1, y1, x2, y2):
    x1 = int(x1);y1 = int(y1);x2 = int(x2);y2 = int(y2)
    for child in browser_widget.findChildren(QtWidgets.QWidget):
        if (child.metaObject().className() == "QtWebEngineCore::RenderWidgetHostViewQtDelegateWidget"):
            event_press = QtGui.QMouseEvent(QtCore.QEvent.MouseButtonPress, QtCore.QPoint(x1, y1),
                                            QtCore.Qt.LeftButton, QtCore.Qt.LeftButton, QtCore.Qt.NoModifier, )
            QtCore.QCoreApplication.postEvent(child, event_press)
            for p in getIntEquidistantPoints(x1, y1, x2, y2):
                QtCore.QCoreApplication.postEvent(child,
                                                  QMouseEvent(QEvent.MouseMove,
                                                              QtCore.QPoint(p[0], p[1]),
                                                              Qt.NoButton,
                                                              Qt.MouseButtons(Qt.LeftButton),
                                                              Qt.NoModifier)); wait(1)
            event_release = QtGui.QMouseEvent(QtCore.QEvent.MouseButtonRelease, QtCore.QPoint(x2, y2),
                                              QtCore.Qt.LeftButton, QtCore.Qt.LeftButton, QtCore.Qt.NoModifier, )
            QtCore.QCoreApplication.postEvent(child, event_release)