区分单击和双击在pyside [英] Differentiate single click from double click in pyside

问题描述

我尝试在Pyside中实现如何区分mouseReleaseEvent和mousedoubleClickEvent在QGrapnhicsScene ，但我不得不添加一个crufty标志，以防止显示单击后的第二个按钮释放在双点击。

I have tried to implement in Pyside the method described in How to distinguish between mouseReleaseEvent and mousedoubleClickEvent on QGrapnhicsScene, but I had to add a crufty flag to keep it from showing single click after the second button release in a double click.

有更好的方法吗？

import sys
from PySide import QtGui, QtCore

class Example(QtGui.QWidget):

    def __init__(self):
        super(Example, self).__init__()
        """an attempt to implement 
        http://stackoverflow.com/questions/18021691/how-to-distinguish-between-mousereleaseevent-and-mousedoubleclickevent-on-qgrapn
        main()
            connect(timer, SIGNAL(timeout()), this, SLOT(singleClick()));
        mouseReleaseEvent()
            timer->start();
        mouseDoubleClickEvent()
            timer->stop();
        singleClick()
            // Do single click behavior
        """
        self.timer = QtCore.QTimer()
        self.timer.setSingleShot(True)
        # had to add a "double_clicked" flag
        self.double_clicked = False
        self.timer.timeout.connect(self.singleClick)

        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Single click, double click')    
        self.show()

    def mouseReleaseEvent(self, event):
        if not self.double_clicked:
            self.timer.start(200)
        else:
            self.double_clicked = False

    def mouseDoubleClickEvent(self, event):
        self.timer.stop()
        self.double_clicked = True
        print 'double click'

    def singleClick(self):
        print 'singleClick'

if __name__ == '__main__':
    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())

推荐答案

好吧，你已经发现，原来的描述是不完整的。

Well, as you've discovered, the original description is incomplete.

它提供了一个解决方案， 点击双击并单击，但不是第二点击双击并单击。

It gives a solution for distinguishing between the first click of a double-click and single-click, but not the second click of a double-click and a single-click.

区分第二次点击的最简单的解决方案是使用标志。

The simplest solution for distinguishing the second click is to use a flag.

PS：您可以通过使用 QtGui.qApp.doubleClickInterval 的定时器时间间隔。

PS: you could slightly improve your example by using QtGui.qApp.doubleClickInterval for the timer interval.

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