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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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以上就是python3+pyqt5+qt designer实现扩展对话框的详细内容。