本文是对《Python Qt GUI快速编程》的第9章的扩展对话框例子Find and replace用Python3+PyQt5+Qt Designer进行改写。
第一部分无借用Qt Designer,完全用代码实现。
第二部分则借用Qt Designer,快速实现。
第一部分:
import sys from PyQt5.QtCore import Qt,pyqtSignal from PyQt5.QtWidgets import (QApplication, QCheckBox, QDialog, QFrame, QGridLayout, QHBoxLayout, QLabel, QLayout, QLineEdit, QPushButton, QVBoxLayout) class FindAndReplaceDlg(QDialog): find = pyqtSignal(str,bool,bool,bool,bool,bool) replace = pyqtSignal(str,str,bool,bool,bool,bool,bool) def __init__(self, parent=None): super(FindAndReplaceDlg, self).__init__(parent) findLabel = QLabel("Find &what:") self.findLineEdit = QLineEdit() findLabel.setBuddy(self.findLineEdit) replaceLabel = QLabel("Replace w&ith:") self.replaceLineEdit = QLineEdit() replaceLabel.setBuddy(self.replaceLineEdit) self.caseCheckBox = QCheckBox("&Case sensitive") self.wholeCheckBox = QCheckBox("Wh&ole words") self.wholeCheckBox.setChecked(True) self.moreFrame = QFrame() self.moreFrame.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) self.backwardsCheckBox = QCheckBox("Search &Backwards") self.regexCheckBox = QCheckBox("Regular E&xpression") self.ignoreNotesCheckBox = QCheckBox("Ignore foot¬es " "and endnotes") line = QFrame() line.setFrameStyle(QFrame.VLine|QFrame.Sunken) self.findButton = QPushButton("&Find") self.replaceButton = QPushButton("&Replace") closeButton = QPushButton("Close") self.moreButton = QPushButton("&More") self.moreButton.setCheckable(True) gridLayout = QGridLayout() gridLayout.addWidget(findLabel, 0, 0) gridLayout.addWidget(self.findLineEdit, 0, 1) gridLayout.addWidget(replaceLabel, 1, 0) gridLayout.addWidget(self.replaceLineEdit, 1, 1) frameLayout = QVBoxLayout() frameLayout.addWidget(self.backwardsCheckBox) frameLayout.addWidget(self.regexCheckBox) frameLayout.addWidget(self.ignoreNotesCheckBox) self.moreFrame.setLayout(frameLayout) leftLayout = QVBoxLayout() leftLayout.addLayout(gridLayout) leftLayout.addWidget(self.caseCheckBox) leftLayout.addWidget(self.wholeCheckBox) leftLayout.addWidget(self.moreFrame) buttonLayout = QVBoxLayout() buttonLayout.addWidget(self.findButton) buttonLayout.addWidget(self.replaceButton) buttonLayout.addWidget(closeButton) buttonLayout.addWidget(self.moreButton) buttonLayout.addStretch() mainLayout = QHBoxLayout() mainLayout.addLayout(leftLayout) mainLayout.addWidget(line) mainLayout.addLayout(buttonLayout) self.setLayout(mainLayout) self.moreFrame.hide() mainLayout.setSizeConstraint(QLayout.SetFixedSize) self.moreButton.toggled[bool].connect(self.setvisible) self.findLineEdit.textEdited.connect(self.updateUi) self.findButton.clicked.connect(self.findClicked) self.replaceButton.clicked.connect(self.replaceClicked) self.updateUi() self.setWindowTitle("Find and Replace") def setvisible(self,YN): self.moreFrame.setVisible(YN) def findClicked(self): self.find.emit(self.findLineEdit.text(), self.caseCheckBox.isChecked(), self.wholeCheckBox.isChecked(), self.backwardsCheckBox.isChecked(), self.regexCheckBox.isChecked(), self.ignoreNotesCheckBox.isChecked()) def replaceClicked(self): self.replace.emit(self.findLineEdit.text(), self.replaceLineEdit.text(), self.caseCheckBox.isChecked(), self.wholeCheckBox.isChecked(), self.backwardsCheckBox.isChecked(), self.regexCheckBox.isChecked(), self.ignoreNotesCheckBox.isChecked()) def updateUi(self): enable = self.findLineEdit.text() self.findButton.setEnabled(bool(enable)) self.replaceButton.setEnabled(bool(enable)) if __name__ == "__main__": def find(what, *args): print("Find {0} {1}".format(what, [x for x in args])) def replace(old, new, *args): print("Replace {0} with {1} {2}".format( old, new, [x for x in args])) app = QApplication(sys.argv) form = FindAndReplaceDlg() form.find.connect(find) form.replace.connect(replace) form.show() app.exec_()
第二部分:
/home/yrd/eric_workspace/chap09/findandreplacedlg/Ui_findandreplacedlg.py
# -*- coding: utf-8 -*- # Form implementation generated from reading ui file '/home/yrd/eric_workspace/chap09/findandreplacedlg/findandreplacedlg.ui' # # Created by: PyQt5 UI code generator 5.7 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets class Ui_FindAndReplaceDlg(object): def setupUi(self, FindAndReplaceDlg): FindAndReplaceDlg.setObjectName("FindAndReplaceDlg") FindAndReplaceDlg.resize(355, 274) self.mainlayout = QtWidgets.QHBoxLayout(FindAndReplaceDlg) self.mainlayout.setSizeConstraint(QtWidgets.QLayout.SetFixedSize) self.mainlayout.setContentsMargins(9, 9, 9, 9) self.mainlayout.setSpacing(6) self.mainlayout.setObjectName("mainlayout") self.vboxlayout = QtWidgets.QVBoxLayout() self.vboxlayout.setContentsMargins(0, 0, 0, 0) self.vboxlayout.setSpacing(6) self.vboxlayout.setObjectName("vboxlayout") self.gridlayout = QtWidgets.QGridLayout() self.gridlayout.setContentsMargins(0, 0, 0, 0) self.gridlayout.setSpacing(6) self.gridlayout.setObjectName("gridlayout") self.replaceLineEdit = QtWidgets.QLineEdit(FindAndReplaceDlg) self.replaceLineEdit.setObjectName("replaceLineEdit") self.gridlayout.addWidget(self.replaceLineEdit, 1, 1, 1, 1) self.findLineEdit = QtWidgets.QLineEdit(FindAndReplaceDlg) self.findLineEdit.setObjectName("findLineEdit") self.gridlayout.addWidget(self.findLineEdit, 0, 1, 1, 1) self.label_2 = QtWidgets.QLabel(FindAndReplaceDlg) self.label_2.setObjectName("label_2") self.gridlayout.addWidget(self.label_2, 1, 0, 1, 1) self.label = QtWidgets.QLabel(FindAndReplaceDlg) self.label.setObjectName("label") self.gridlayout.addWidget(self.label, 0, 0, 1, 1) self.vboxlayout.addLayout(self.gridlayout) self.vboxlayout1 = QtWidgets.QVBoxLayout() self.vboxlayout1.setContentsMargins(0, 0, 0, 0) self.vboxlayout1.setSpacing(6) self.vboxlayout1.setObjectName("vboxlayout1") self.caseCheckBox = QtWidgets.QCheckBox(FindAndReplaceDlg) self.caseCheckBox.setObjectName("caseCheckBox") self.vboxlayout1.addWidget(self.caseCheckBox) self.wholeCheckBox = QtWidgets.QCheckBox(FindAndReplaceDlg) self.wholeCheckBox.setChecked(True) self.wholeCheckBox.setObjectName("wholeCheckBox") self.vboxlayout1.addWidget(self.wholeCheckBox) self.vboxlayout.addLayout(self.vboxlayout1) spacerItem = QtWidgets.QSpacerItem(231, 16, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) self.vboxlayout.addItem(spacerItem) self.moreFrame = QtWidgets.QFrame(FindAndReplaceDlg) self.moreFrame.setFrameShape(QtWidgets.QFrame.StyledPanel) self.moreFrame.setFrameShadow(QtWidgets.QFrame.Raised) self.moreFrame.setObjectName("moreFrame") self.vboxlayout2 = QtWidgets.QVBoxLayout(self.moreFrame) self.vboxlayout2.setContentsMargins(9, 9, 9, 9) self.vboxlayout2.setSpacing(6) self.vboxlayout2.setObjectName("vboxlayout2") self.backwardsCheckBox = QtWidgets.QCheckBox(self.moreFrame) self.backwardsCheckBox.setObjectName("backwardsCheckBox") self.vboxlayout2.addWidget(self.backwardsCheckBox) self.regexCheckBox = QtWidgets.QCheckBox(self.moreFrame) self.regexCheckBox.setObjectName("regexCheckBox") self.vboxlayout2.addWidget(self.regexCheckBox) self.ignoreNotesCheckBox = QtWidgets.QCheckBox(self.moreFrame) self.ignoreNotesCheckBox.setObjectName("ignoreNotesCheckBox") self.vboxlayout2.addWidget(self.ignoreNotesCheckBox) self.vboxlayout.addWidget(self.moreFrame) self.mainlayout.addLayout(self.vboxlayout) self.line = QtWidgets.QFrame(FindAndReplaceDlg) self.line.setFrameShape(QtWidgets.QFrame.VLine) self.line.setFrameShadow(QtWidgets.QFrame.Sunken) self.line.setObjectName("line") self.mainlayout.addWidget(self.line) self.vboxlayout3 = QtWidgets.QVBoxLayout() self.vboxlayout3.setContentsMargins(0, 0, 0, 0) self.vboxlayout3.setSpacing(6) self.vboxlayout3.setObjectName("vboxlayout3") self.findButton = QtWidgets.QPushButton(FindAndReplaceDlg) self.findButton.setFocusPolicy(QtCore.Qt.NoFocus) self.findButton.setObjectName("findButton") self.vboxlayout3.addWidget(self.findButton) self.replaceButton = QtWidgets.QPushButton(FindAndReplaceDlg) self.replaceButton.setFocusPolicy(QtCore.Qt.NoFocus) self.replaceButton.setObjectName("replaceButton") self.vboxlayout3.addWidget(self.replaceButton) self.closeButton = QtWidgets.QPushButton(FindAndReplaceDlg) self.closeButton.setFocusPolicy(QtCore.Qt.NoFocus) self.closeButton.setObjectName("closeButton") self.vboxlayout3.addWidget(self.closeButton) self.moreButton = QtWidgets.QPushButton(FindAndReplaceDlg) self.moreButton.setFocusPolicy(QtCore.Qt.NoFocus) self.moreButton.setCheckable(True) self.moreButton.setObjectName("moreButton") self.vboxlayout3.addWidget(self.moreButton) spacerItem1 = QtWidgets.QSpacerItem(21, 16, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding) self.vboxlayout3.addItem(spacerItem1) self.mainlayout.addLayout(self.vboxlayout3) self.label_2.setBuddy(self.replaceLineEdit) self.label.setBuddy(self.findLineEdit) self.retranslateUi(FindAndReplaceDlg) self.closeButton.clicked.connect(FindAndReplaceDlg.reject) self.moreButton.toggled['bool'].connect(self.moreFrame.setVisible) QtCore.QMetaObject.connectSlotsByName(FindAndReplaceDlg) FindAndReplaceDlg.setTabOrder(self.findLineEdit, self.replaceLineEdit) FindAndReplaceDlg.setTabOrder(self.replaceLineEdit, self.caseCheckBox) FindAndReplaceDlg.setTabOrder(self.caseCheckBox, self.wholeCheckBox) FindAndReplaceDlg.setTabOrder(self.wholeCheckBox, self.backwardsCheckBox) FindAndReplaceDlg.setTabOrder(self.backwardsCheckBox, self.regexCheckBox) FindAndReplaceDlg.setTabOrder(self.regexCheckBox, self.ignoreNotesCheckBox) def retranslateUi(self, FindAndReplaceDlg): _translate = QtCore.QCoreApplication.translate FindAndReplaceDlg.setWindowTitle(_translate("FindAndReplaceDlg", "Find and Replace")) self.label_2.setText(_translate("FindAndReplaceDlg", "Replace w&ith:")) self.label.setText(_translate("FindAndReplaceDlg", "Find &what:")) self.caseCheckBox.setText(_translate("FindAndReplaceDlg", "&Case sensitive")) self.wholeCheckBox.setText(_translate("FindAndReplaceDlg", "Wh&ole words")) self.backwardsCheckBox.setText(_translate("FindAndReplaceDlg", "Search &Backwards")) self.regexCheckBox.setText(_translate("FindAndReplaceDlg", "Regular E&xpression")) self.ignoreNotesCheckBox.setText(_translate("FindAndReplaceDlg", "Ignore foot¬es and endnotes")) self.findButton.setText(_translate("FindAndReplaceDlg", "&Find")) self.replaceButton.setText(_translate("FindAndReplaceDlg", "&Replace")) self.closeButton.setText(_translate("FindAndReplaceDlg", "Close")) self.moreButton.setText(_translate("FindAndReplaceDlg", "&More"))
/home/yrd/eric_workspace/chap09/findandreplacedlg/findandreplacedlg.py
# -*- coding: utf-8 -*- """ Module implementing FindAndReplaceDlg. """ from PyQt5.QtCore import pyqtSlot,pyqtSignal from PyQt5.QtWidgets import QDialog,QApplication from Ui_findandreplacedlg import Ui_FindAndReplaceDlg class FindAndReplaceDlg(QDialog, Ui_FindAndReplaceDlg): """ Class documentation goes here. """ find = pyqtSignal(str,bool,bool,bool,bool,bool) replace = pyqtSignal(str,str,bool,bool,bool,bool,bool) def __init__(self, parent=None): """ Constructor @param parent reference to the parent widget @type QWidget """ super(FindAndReplaceDlg, self).__init__(parent) self.setupUi(self) self.moreFrame.hide() #self.layout().setSizeConstraint(QLayout.SetFixedSize) self.updateUi() @pyqtSlot(str) def on_findLineEdit_textEdited(self, text): """ Slot documentation goes here. @param p0 DESCRIPTION @type str """ # TODO: not implemented yet self.updateUi() @pyqtSlot() def on_findButton_clicked(self): self.find.emit(self.findLineEdit.text(), self.caseCheckBox.isChecked(), self.wholeCheckBox.isChecked(), self.backwardsCheckBox.isChecked(), self.regexCheckBox.isChecked(), self.ignoreNotesCheckBox.isChecked()) @pyqtSlot() def on_replaceButton_clicked(self): self.replace.emit(self.findLineEdit.text(), self.replaceLineEdit.text(), self.caseCheckBox.isChecked(), self.wholeCheckBox.isChecked(), self.backwardsCheckBox.isChecked(), self.regexCheckBox.isChecked(), self.ignoreNotesCheckBox.isChecked()) def updateUi(self): enable = self.findLineEdit.text() self.findButton.setEnabled(bool(enable)) self.replaceButton.setEnabled(bool(enable)) if __name__ == "__main__": import sys def find(what, *args): print("Find {0} {1}".format(what, [x for x in args])) def replace(old, new, *args): print("Replace {0} with {1} {2}".format( old, new, [x for x in args])) app = QApplication(sys.argv) form = FindAndReplaceDlg() form.find.connect(find) form.replace.connect(replace) form.show() app.exec_()
运行结果:
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