Utilisation de PyQt4.QtGui.QMouseEvent dans un QWidget

Question

J'utilise PyQt4.QMainWindow comme interface d'application, et je veux obtenir les coordonnées x et y de la souris à l'intérieur d'un QWidget et les définir de façon continue dans 2 textBrowsers dans le Fenêtre principale.

La documentation de QWidget est here. La documentation de QMouseEvent est here.

Voici le code

from PyQt4 import QtGui 
from PyQt4.QtGui import QApplication 
import sys 

class Ui_MainWindow(object): 
    def setupUI(self, MainWindow): 
     self.textBrowser_1 = QtGui.QTextBrowser(self.tab) 
     self.textBrowser_2 = QtGui.QTextBrowser(self.tab) 
     self.widget_1 = QtGui.QWidget(self.tab) 
     self.widget_1.setMouseTracking(True) 

class MyMainScreen(QMainWindow): 
def __init__(self, parent=None): 
    QtGui.QMainWindow.__init__(self, parent) 
    self.ui = Ui_MainWindow() # This is from a python export from QtDesigner 
    # There is a QWidget inside that is self.ui.widget_1 
    # and 2 textBrowsers, textBrowser_1 and textBrowser_2 
    # I want to populate these 2 textBrowsers with the current x,y 
    # coordinates. 

if __name__ == "__main__": 
    app = QApplication(sys.argv) 
    mainscreen = MyMainScreen()   
    mainscreen.show() 
    app.exec_() 

Answer 1

Lorsque vous appliquez setMouseTracking il applique uniquement à ce widget, et non à vos enfants, vous devez donc manuellement, dans la solution suivante:

def setMouseTracking(self, flag): 
    def recursive_set(parent): 
     for child in parent.findChildren(QtCore.QObject): 
      try: 
       child.setMouseTracking(flag) 
      except: 
       pass 
      recursive_set(child) 
    QtGui.QWidget.setMouseTracking(self, flag) 
    recursive_set(self) 

complète Code:

from PyQt4 import QtCore 

from PyQt4 import QtGui 
from PyQt4.QtGui import QApplication, QMainWindow 
import sys 


class Ui_MainWindow(object): 
    def setupUi(self, MainWindow): 
     MainWindow.resize(800, 132) 
     self.centralwidget = QtGui.QWidget(MainWindow) 
     self.horizontalLayout = QtGui.QHBoxLayout(self.centralwidget) 
     self.textBrowser_1 = QtGui.QTextBrowser(self.centralwidget) 
     self.horizontalLayout.addWidget(self.textBrowser_1) 
     self.textBrowser_2 = QtGui.QTextBrowser(self.centralwidget) 
     self.horizontalLayout.addWidget(self.textBrowser_2) 
     MainWindow.setCentralWidget(self.centralwidget) 
     self.menubar = QtGui.QMenuBar(MainWindow) 
     self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22)) 
     MainWindow.setMenuBar(self.menubar) 
     self.statusbar = QtGui.QStatusBar(MainWindow) 
     MainWindow.setStatusBar(self.statusbar) 
     QtCore.QMetaObject.connectSlotsByName(MainWindow) 


class MyMainScreen(QMainWindow): 
    def __init__(self, parent=None): 
     QtGui.QMainWindow.__init__(self, parent) 
     self.ui = Ui_MainWindow() # This is from a python export from QtDesigner 
     self.ui.setupUi(self) 
     self.setMouseTracking(True) 
     self.ui.textBrowser_1.setMouseTracking(True) 
     self.ui.textBrowser_2.setMouseTracking(True) 
     self.ui.menubar.setMouseTracking(True) 
     self.ui.statusbar.setMouseTracking(True) 

    def setMouseTracking(self, flag): 
     def recursive_set(parent): 
      for child in parent.findChildren(QtCore.QObject): 
       try: 
        child.setMouseTracking(flag) 
       except: 
        pass 
       recursive_set(child) 
     QtGui.QWidget.setMouseTracking(self, flag) 
     recursive_set(self) 

    def mouseMoveEvent(self, event): 
     pos = event.pos() 
     self.ui.textBrowser_1.append(str(pos.x())) 
     self.ui.textBrowser_2.append(str(pos.y())) 
     QtGui.QMainWindow.mouseMoveEvent(self, event) 

if __name__ == "__main__": 
    app = QApplication(sys.argv) 
    mainscreen = MyMainScreen() 
    mainscreen.show() 
    app.exec_() 

Ceci est ma sortie: