Question

我遇到问题，当我将文本从QTextEdit保存为txt或rtf时，它不会保存下划线和字体大小等内容。这是代码：

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

# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt4 UI code generator 4.11.4
#
# WARNING! All changes made in this file will be lost!

import gi
import signal
gi.require_version('Gtk', '3.0')
import sys
import dbus
import pygtk
import gi
import signal
from PyQt4 import QtCore, QtGui
from PyQt4.QtCore import pyqtSlot
from PyQt4.QtCore import QUrl
from PyQt4.QtWebKit import QWebView

import sip
sip.setapi('QString', 2)
sip.setapi('QVariant', 2)

gi.require_version('Notify', '0.7')


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_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName(_fromUtf8("MainWindow"))
        MainWindow.resize(679, 600)

        self.underlined = False
        self.centralwidget = QtGui.QWidget(MainWindow)
        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))

        self.saveButton = QtGui.QPushButton(self.centralwidget)
        self.saveButton.setGeometry(QtCore.QRect(10, 0, 88, 28))
        self.saveButton.setObjectName(_fromUtf8("pushButton"))

        self.textEdit = QtGui.QTextEdit(self.centralwidget)
        self.textEdit.setGeometry(QtCore.QRect(0, 30, 681, 800))
        self.textEdit.setObjectName(_fromUtf8("textEdit"))

        self.fontButton = QtGui.QPushButton(self.centralwidget)
        self.fontButton.setGeometry(QtCore.QRect(400, 0, 88, 28))
        self.fontButton.setObjectName(_fromUtf8("fontButton"))

        self.fontSize = QtGui.QLineEdit(self.centralwidget)
        self.fontSize.setGeometry(QtCore.QRect(100, 0, 28, 28))
        self.fontSize.setObjectName(_fromUtf8("fontEdit"))
        self.fontSize.returnPressed.connect(self.fontButton.click)

        self.underlineButton = QtGui.QPushButton(self.centralwidget)
        self.underlineButton.setGeometry(QtCore.QRect(130, 0, 28, 28))
        self.underlineButton.setObjectName(_fromUtf8("underlineButton"))

        self.disableUnderlineButton = QtGui.QPushButton(self.centralwidget)
        self.disableUnderlineButton.setGeometry(QtCore.QRect(160, 0, 28, 28))
        self.disableUnderlineButton.setObjectName(_fromUtf8("disableUnderlineButton"))


        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtGui.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 679, 24))
        self.menubar.setObjectName(_fromUtf8("menubar"))

        self.menuTest = QtGui.QMenu(self.menubar)
        self.menuTest.setObjectName(_fromUtf8("menuTest"))
        MainWindow.setMenuBar(self.menubar)

        self.statusbar = QtGui.QStatusBar(MainWindow)
        self.statusbar.setObjectName(_fromUtf8("statusbar"))
        MainWindow.setStatusBar(self.statusbar)
        self.menubar.addAction(self.menuTest.menuAction())

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

        def save(self):
            with open('log.rtf', 'w') as yourFile:
                yourFile.write(str(self.textEdit.toPlainText()))

        def saveFont(self):
            self.textEdit.setFontPointSize(int(self.fontSize.text()))

        def underline(self):
            self.textEdit.setFontUnderline(True)

        def disableUnderline(self):
            self.textEdit.setFontUnderline(False)

        def commander(self):
            save(self)
        self.textEdit.setHtml('<u>hi</u>')
        self.saveButton.clicked.connect(lambda: save(self))
        self.fontButton.clicked.connect(lambda: saveFont(self))
        self.underlineButton.clicked.connect(lambda: underline(self))
        self.disableUnderlineButton.clicked.connect(lambda: disableUnderline(self))




    def retranslateUi(self, MainWindow):
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow", None))
        self.saveButton.setText(_translate("MainWindow", "Save text", None))
        self.fontButton.setText(_translate("MainWindow", "Save Font", None))
        self.menuTest.setTitle(_translate("MainWindow", "test", None))
        self.underlineButton.setText(_translate("MainWindow", "Uon", None))
        self.disableUnderlineButton.setText(_translate("MainWindow", "Uoff", None))


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    MainWindow = QtGui.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

我尝试使用HTML和其他格式修复此问题，但无法使其正常运行。

Answer 1

这是因为您使用toPlainText将文本转换为纯文本，其中不包含任何格式信息。

yourFile.write(str(self.textEdit.toPlainText()))

如果要保留格式，则需要使用toHtml。

yourFile.write(str(self.textEdit.toHtml()))

请注意，这与rtf不同。它甚至不是完全标准的HTML，如果你试图在QTextEdit之外的另一个HTML查看器中查看它，它可能会显示一点点不同。根据我的经验，从QTextEdit生成的HTML非常难看，只有在您计划仅在QTextEdits内显示时才能正常运行。

如何显示自定义python QTextEdit效果，如txt或rtf格式的下划线？

1 个答案: