在两个QTreeview之间拖放

Question

我的目的是在两个QTreeView之间进行拖放。例如：将项目从本地树视图拖到远程树视图，远程树视图将接受信号并触发一个函数（例如：打印一些东西，所以我知道它成功了）。在

我已经搜索了一些帖子，他们只做了一个QTreeView，我仍然不清楚如何使用拖放。这是我的完整代码，包括UI。在

在主.py在

    # coding=utf-8
    __author__ = 'Administrator'

    import os, re, sys, time, math
    import ConfigParser
    from PyQt4 import QtCore, QtGui
    from PyQt4.QtCore import *
    from PyQt4.QtGui import *
    from MainWindow_ui import Ui_MainWindow
    import AccountDialog_ui


    ######## Config ini File Part#######################
    def create_conf_ini(ipaddress='', username='', password='',  secret='',mode="a+"):
        conf = ConfigParser.ConfigParser()
        conf.add_section("logininfor")
        conf.set("logininfor", "ipaddress", ipaddress)
        conf.set("logininfor", "username", username)
        conf.set("logininfor", "password", password)
        conf.set("logininfor", "secret", secret)
        f = open('config.ini', mode)
        conf.write(f)
        f.close()

    ### get conf file
    def get_infor_from_config():
        conf = ConfigParser.ConfigParser()
        if os.path.isfile('config.ini'):
            conf.read("config.ini")
            ipaddress = conf.get("logininfor", "ipaddress")
            username = conf.get("logininfor", "username")
            password = conf.get("logininfor", "password")
            secret = conf.get("logininfor", "secret")
            return ipaddress, username, password, secret
        else:
            create_conf_ini()
            return '', '', '', ''
    ###############################

    class S3MiniToolsView(QtGui.QMainWindow, Ui_MainWindow):
        def __init__(self):
            QtGui.QMainWindow.__init__(self)
            self.setupUi(self)
            self.actionAccount_Setting.triggered.connect(self.accountsetting_dlg)

            self.init_localtreeview()
            self.init_remotetreeview()
            QtGui.QTreeView.connect(self.remote_Treeview, QtCore.SIGNAL('dropEvent()'), self.additem)

            (ipaddress, username, password, secret) = get_infor_from_config()
            self.servername_mainw.setText(ipaddress)
            self.uid_mainw.setText(username)
            self.accesskey_mainw.setText(password)
            self.secretkey_mainw.setText(secret)

        def init_localtreeview(self):
            self.fileSystemModel = QFileSystemModel(self.local_Treeview)
            self.fileSystemModel.setReadOnly(False)
            #self.fileSystemModel.setFilter(QDir.AllDirs | QDir.NoDotAndDotDot | QDir.Drives)
            root = self.fileSystemModel.setRootPath("")
            self.local_Treeview.setModel(self.fileSystemModel)
            self.local_Treeview.setRootIndex(root)
            self.local_Treeview.setDragDropMode(QtGui.QAbstractItemView.DragOnly)
            #QtCore.QObject.connect(self.local_Treeview.selectionModel(), QtCore.SIGNAL('selectionChanged(QItemSelection, QItemSelection)'), self.test)
            #self.local_Treeview.clicked[QtCore.QModelIndex].connect(self.test)
            self.local_Treeview.clicked.connect(self.test)
            self.local_Treeview.setDragEnabled(True)
        def init_remotetreeview(self):
            self.remote_Treeview.setDragDropMode(QtGui.QAbstractItemView.DropOnly)
            # self.fileSystemModel = QFileSystemModel(self.local_Treeview)
            # self.fileSystemModel.setReadOnly(False)
            # self.remote_Treeview.setModel(self.fileSystemModel)
            self.model = QtGui.QStandardItemModel(self.remote_Treeview)
            self.remote_Treeview.setModel(self.model)

            self.remote_Treeview.setAcceptDrops(True)


        def dragEnterEvent(self, e):

            if e.mimeData().hasFormat('text/plain'):
                e.accept()

            else:
                e.ignore()

        def dropEvent(self, e):
            print 'In dropEvent'
            # item = QtGui.QStandardItem("did ok")
            # self.model.appendRow(item)
            #self.remote_Treeview.(e.mimeData().text())

        def additem(self):
            item = QtGui.QStandardItem("did ok")
            self.model.appendRow(item)

        #@QtCore.pyqtSlot("QItemSelection, QItemSelection")
        @QtCore.pyqtSlot(QtCore.QModelIndex)
        def test(self, index):
            indexItem = self.fileSystemModel.index(index.row(), 0, index.parent())
            # path or filename selected
            fileName = self.fileSystemModel.fileName(indexItem)
            # full path/filename selected
            filePath = self.fileSystemModel.filePath(indexItem)

            print("hello!")
            print(fileName)
            print(filePath)


        def accountsetting_dlg(self):
            print "AccountSetting"
            accountdlg = QuickConnectDlg(self)
            accountdlg.lineEdit_servername.setText( 'ceph-radosgw.lab.com')
            accountdlg.lineEdit_accountname.setText( 'johndoe')
            accountdlg.lineEdit_accesskey.setText( 'CIXN1L1B42JAYGV6KSIT')
            accountdlg.lineEdit_secretkey.setText('17YTAqVBL60StWQniDNWoAH04bScFbjxAxpxNFCg')
            accountdlg.lineEdit_httpport.setText( '8080')
            accountdlg.lineEdit_httpsport.setText( '443')

            if accountdlg.exec_():

                servername = accountdlg.lineEdit_servername.text()
                accountname = accountdlg.lineEdit_accountname.text()
                accesskey = accountdlg.lineEdit_accesskey.text()
                secretkey = accountdlg.lineEdit_secretkey.text()

                create_conf_ini(servername, accountname, accesskey, secretkey, 'r+')

            return

    class QuickConnectDlg(QDialog, AccountDialog_ui.Ui_accountDialog):
        def __init__(self, parent=None):
            super(QuickConnectDlg, self).__init__(parent)
            self.setupUi(self)


    def main():
        app = QApplication(sys.argv)
        window = S3MiniToolsView()
        window.show()
        sys.exit(app.exec_())


    if __name__ == "__main__":
        main()

这是主窗口_用户界面在

^{pr2}$

帐户对话框_用户界面在

    # -*- coding: utf-8 -*-

    # Form implementation generated from reading ui file 'AccountDialog.ui'
    #
    # Created: Mon Aug 25 23:41:07 2014
    #      by: PyQt4 UI code generator 4.11.1
    #
    # WARNING! All changes made in this file will be lost!

    from PyQt4 import QtCore, QtGui

    try:
        _fromUtf8 = QtCore.QString.fromUtf8
    except AttributeError:
        def _fromUtf8(s):
            return s

    try:
        _encoding = QtGui.QApplication.UnicodeUTF8
        def _translate(context, text, disambig):
            return QtGui.QApplication.translate(context, text, disambig, _encoding)
    except AttributeError:
        def _translate(context, text, disambig):
            return QtGui.QApplication.translate(context, text, disambig)

    class Ui_accountDialog(object):
        def setupUi(self, accountDialog):
            accountDialog.setObjectName(_fromUtf8("accountDialog"))
            accountDialog.resize(400, 248)
            self.layoutWidget = QtGui.QWidget(accountDialog)
            self.layoutWidget.setGeometry(QtCore.QRect(10, 10, 380, 225))
            self.layoutWidget.setObjectName(_fromUtf8("layoutWidget"))
            self.gridLayout_3 = QtGui.QGridLayout(self.layoutWidget)
            self.gridLayout_3.setMargin(0)
            self.gridLayout_3.setObjectName(_fromUtf8("gridLayout_3"))
            self.tabWidget_2 = QtGui.QTabWidget(self.layoutWidget)
            self.tabWidget_2.setObjectName(_fromUtf8("tabWidget_2"))
            self.tabWidgetPage1_2 = QtGui.QWidget()
            self.tabWidgetPage1_2.setObjectName(_fromUtf8("tabWidgetPage1_2"))
            self.gridLayout_4 = QtGui.QGridLayout(self.tabWidgetPage1_2)
            self.gridLayout_4.setObjectName(_fromUtf8("gridLayout_4"))
            self.label_7 = QtGui.QLabel(self.tabWidgetPage1_2)
            self.label_7.setObjectName(_fromUtf8("label_7"))
            self.gridLayout_4.addWidget(self.label_7, 0, 0, 1, 1)
            self.lineEdit_servername = QtGui.QLineEdit(self.tabWidgetPage1_2)
            self.lineEdit_servername.setObjectName(_fromUtf8("lineEdit_servername"))
            self.gridLayout_4.addWidget(self.lineEdit_servername, 0, 1, 1, 2)
            self.label_8 = QtGui.QLabel(self.tabWidgetPage1_2)
            self.label_8.setObjectName(_fromUtf8("label_8"))
            self.gridLayout_4.addWidget(self.label_8, 1, 0, 1, 1)
            self.lineEdit_accountname = QtGui.QLineEdit(self.tabWidgetPage1_2)
            self.lineEdit_accountname.setObjectName(_fromUtf8("lineEdit_accountname"))
            self.gridLayout_4.addWidget(self.lineEdit_accountname, 1, 1, 1, 2)
            self.label_9 = QtGui.QLabel(self.tabWidgetPage1_2)
            self.label_9.setObjectName(_fromUtf8("label_9"))
            self.gridLayout_4.addWidget(self.label_9, 2, 0, 1, 1)
            self.lineEdit_accesskey = QtGui.QLineEdit(self.tabWidgetPage1_2)
            self.lineEdit_accesskey.setObjectName(_fromUtf8("lineEdit_accesskey"))
            self.gridLayout_4.addWidget(self.lineEdit_accesskey, 2, 1, 1, 2)
            self.label_10 = QtGui.QLabel(self.tabWidgetPage1_2)
            self.label_10.setObjectName(_fromUtf8("label_10"))
            self.gridLayout_4.addWidget(self.label_10, 3, 0, 1, 1)
            self.lineEdit_secretkey = QtGui.QLineEdit(self.tabWidgetPage1_2)
            self.lineEdit_secretkey.setObjectName(_fromUtf8("lineEdit_secretkey"))
            self.gridLayout_4.addWidget(self.lineEdit_secretkey, 3, 1, 1, 2)
            self.label_11 = QtGui.QLabel(self.tabWidgetPage1_2)
            self.label_11.setObjectName(_fromUtf8("label_11"))
            self.gridLayout_4.addWidget(self.label_11, 4, 0, 1, 1)
            self.lineEdit_httpport = QtGui.QLineEdit(self.tabWidgetPage1_2)
            self.lineEdit_httpport.setObjectName(_fromUtf8("lineEdit_httpport"))
            self.gridLayout_4.addWidget(self.lineEdit_httpport, 4, 1, 1, 1)
            self.label_12 = QtGui.QLabel(self.tabWidgetPage1_2)
            self.label_12.setObjectName(_fromUtf8("label_12"))
            self.gridLayout_4.addWidget(self.label_12, 5, 0, 1, 1)
            self.lineEdit_httpsport = QtGui.QLineEdit(self.tabWidgetPage1_2)
            self.lineEdit_httpsport.setObjectName(_fromUtf8("lineEdit_httpsport"))
            self.gridLayout_4.addWidget(self.lineEdit_httpsport, 5, 1, 1, 1)
            self.checkBox_https = QtGui.QCheckBox(self.tabWidgetPage1_2)
            self.checkBox_https.setObjectName(_fromUtf8("checkBox_https"))
            self.gridLayout_4.addWidget(self.checkBox_https, 5, 2, 1, 1)
            self.tabWidget_2.addTab(self.tabWidgetPage1_2, _fromUtf8(""))
            self.gridLayout_3.addWidget(self.tabWidget_2, 0, 0, 1, 3)
            spacerItem = QtGui.QSpacerItem(218, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
            self.gridLayout_3.addItem(spacerItem, 1, 0, 1, 1)
            self.buttonBox = QtGui.QDialogButtonBox(self.layoutWidget)
            self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
            self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
            self.gridLayout_3.addWidget(self.buttonBox, 1, 1, 1, 1)

            self.retranslateUi(accountDialog)
            QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), accountDialog.accept)
            QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), accountDialog.reject)
            QtCore.QMetaObject.connectSlotsByName(accountDialog)

        def retranslateUi(self, accountDialog):
            accountDialog.setWindowTitle(_translate("accountDialog", "Account", None))
            self.label_7.setText(_translate("accountDialog", "Server name", None))
            self.label_8.setText(_translate("accountDialog", "Account name", None))
            self.label_9.setText(_translate("accountDialog", "Access key", None))
            self.label_10.setText(_translate("accountDialog", "Secret key", None))
            self.label_11.setText(_translate("accountDialog", "HTTP Port", None))
            self.lineEdit_httpport.setText(_translate("accountDialog", "8080", None))
            self.label_12.setText(_translate("accountDialog", "HTTPS Port", None))
            self.lineEdit_httpsport.setText(_translate("accountDialog", "443", None))
            self.checkBox_https.setText(_translate("accountDialog", "Connect usring SSL/HTTPS", None))
            self.tabWidget_2.setTabText(self.tabWidget_2.indexOf(self.tabWidgetPage1_2), _translate("accountDialog", "Account", None))

Answer 1

如果您在2个小部件之间交换数据，我建议使用QTreeWidget而不是QTreeView，因为QTreeWidget中的数据可以编辑动态数据、行和值。在2QTreeWidget之间的拖放中，我们可以将它们等效为“复制和删除”。在

在2QTreeWidget之间很容易实现，您只需在QTreeWidget中拖动enter事件并复制到新的QTreeWidget时处理。（如果您的内部移动，我将自行删除旧数据）接下来，如果在QTreeWidget之间有移动数据，则创建您自己的信号来处理它们。最后，将它集成到您的类或小部件中。在

示例（不是您的代码，但您可以自己实现），如下图所示

import sys
from PyQt4 import QtCore, QtGui

class QCustomTreeWidget (QtGui.QTreeWidget):
    itemMoveOutActivated = QtCore.pyqtSignal(object)
    itemNewMoveActivated = QtCore.pyqtSignal(object)

    def __init__ (self, parent = None):
        super(QCustomTreeWidget, self).__init__(parent)
        self.setDragDropMode(QtGui.QAbstractItemView.InternalMove)

    def dragEnterEvent (self, eventQDragEnterEvent):
        sourceQCustomTreeWidget = eventQDragEnterEvent.source()
        if isinstance(sourceQCustomTreeWidget, QCustomTreeWidget) and (self is not sourceQCustomTreeWidget):
            eventQDragEnterEvent.accept()
        else:
            QtGui.QTreeWidget.dragEnterEvent(self, eventQDragEnterEvent)

    def dropEvent (self, eventQDropEvent):
        sourceQCustomTreeWidget = eventQDropEvent.source()
        if isinstance(sourceQCustomTreeWidget, QCustomTreeWidget) and (self is not sourceQCustomTreeWidget):
            sourceQTreeWidgetItem      = sourceQCustomTreeWidget.currentItem()
            destinationQTreeWidgetItem = sourceQTreeWidgetItem.clone()
            self.addTopLevelItem(destinationQTreeWidgetItem)
            sourceQCustomTreeWidget.itemMoveOutActivated.emit(destinationQTreeWidgetItem)
            self.itemNewMoveActivated.emit(destinationQTreeWidgetItem)
        else:
            QtGui.QTreeWidget.dropEvent(self, eventQDropEvent)

class QCustomQWidget (QtGui.QWidget):
    def __init__ (self, parent = None):
        super(QCustomQWidget, self).__init__(parent)
        self.my1QCustomTreeWidget = QCustomTreeWidget(self)
        self.my2QCustomTreeWidget = QCustomTreeWidget(self)
        self.my1QCustomTreeWidget.itemMoveOutActivated.connect(self.itemMoveOutActivatedCallBack1)
        self.my2QCustomTreeWidget.itemMoveOutActivated.connect(self.itemMoveOutActivatedCallBack2)
        self.my1QCustomTreeWidget.itemNewMoveActivated.connect(self.itemNewMoveActivatedCallBack1)
        self.my2QCustomTreeWidget.itemNewMoveActivated.connect(self.itemNewMoveActivatedCallBack2)
        listsExampleQTreeWidgetItem = [QtGui.QTreeWidgetItem([name]) for name in ['Part A', 'Part B', 'Part C']]
        self.my1QCustomTreeWidget.addTopLevelItems(listsExampleQTreeWidgetItem)
        self.allQHBoxLayout = QtGui.QHBoxLayout()
        self.allQHBoxLayout.addWidget(self.my1QCustomTreeWidget)
        self.allQHBoxLayout.addWidget(self.my2QCustomTreeWidget)
        self.setLayout(self.allQHBoxLayout)

    @QtCore.pyqtSlot(QtGui.QTreeWidgetItem)
    def itemMoveOutActivatedCallBack1 (self, goneQTreeWidgetItem):
        print 'QTreeWidget 1 has move QTreeWidgetItem to Another QTreeWidget'

    @QtCore.pyqtSlot(QtGui.QTreeWidgetItem)
    def itemMoveOutActivatedCallBack2 (self, goneQTreeWidgetItem):
        print 'QTreeWidget 2 has move QTreeWidgetItem to Another QTreeWidget'

    @QtCore.pyqtSlot(QtGui.QTreeWidgetItem)
    def itemNewMoveActivatedCallBack1 (self, newQTreeWidgetItem):
        print 'Another QTreeWidget has move QTreeWidgetItem in QTreeWidget 1'

    @QtCore.pyqtSlot(QtGui.QTreeWidgetItem)
    def itemNewMoveActivatedCallBack2 (self, newQTreeWidgetItem):
        print 'Another QTreeWidget has move QTreeWidgetItem in QTreeWidget 2'

app = QtGui.QApplication(sys.argv)
myQCustomQWidget = QCustomQWidget()
myQCustomQWidget.show()
sys.exit(app.exec_())

希望是帮助