我正在PyQt5中制作一个记事本，并且正在选择能够在各行之间导航的选项，当然，我需要移动文本编辑器光标，使其位于用户想要的行中，并且问题是，鼻子如何移动TextEdit的光标。我已经使用了几种方法，但是都没有用。只是或不移动光标或出现错误跳转。
这是完整的代码：https://github.com/MasPot4/Bloc-de-Notas
这是错误的一部分
import sys
from PyQt5 import QtGui
from PyQt5.QtGui import QTextCursor
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QMainWindow, QApplication, QTextEdit, QMessageBox, QLabel, QPushButton
from PyQt5.QtWidgets import QHBoxLayout, QWidget, QMenu, QAction, QFileDialog, QLineEdit
import tkinter
root = tkinter.Tk()
width = root.winfo_screenwidth()
height = root.winfo_screenheight()
class textEdit(QTextEdit):
def __init__(self):
super(textEdit, self).__init__()
self.cursor = self.textCursor()
class gotolineWin(QMainWindow):
def __init__(self):
super(gotolineWin, self).__init__()
self.main = textEdit()
self.label = QLabel(self)
self.go_line = QLineEdit(self)
self.buttonGoto = QPushButton("Go to...", self)
self.buttonCancel = QPushButton("Cancel", self)
self.initUi()
def initUi(self):
self.label.setText("Go to...")
self.label.move(20, 0)
self.go_line.move(20, 25)
self.go_line.resize(260, 20)
self.buttonGoto.move(20, 60)
self.buttonGoto.resize(100, 30)
self.buttonGoto.clicked.connect(lambda: self.GoToLine(int(self.go_line.text())))
self.buttonCancel.clicked.connect(self.cancel)
self.buttonCancel.move(180, 60)
self.setGeometry((width / 2) - 150, (height / 2) - 50, 300, 100)
self.setWindowTitle("Go to...")
def GoToLine(self, line):
# self.main.cursor = self.main.textCursor()
# self.main.cursor.movePosition(self.main.cursor.Left, self.main.cursor.KeepAnchor, 3)
# self.main.setTextCursor(self.main.cursor)
ln = int(line)
linecursor = QTextCursor(self.main.document().findBlockByLineNumber(ln - 1))
self.main.moveCursor(QTextCursor.End, QTextCursor.MoveAnchor)
self.main.setTextCursor(linecursor)
self.close()
def cancel(self):
self.close()
class writter(QMainWindow):
def __init__(self):
super().__init__()
self.textEdit = textEdit()
self.lineWin = gotolineWin()
self.setCentralWidget(self.textEdit)
self.file_name = None
self.initUi()
def initUi(self):
menubar = self.menuBar()
fileMenu = menubar.addMenu('File')
editMenu = menubar.addMenu('Edit')
formatMenu = menubar.addMenu('Format')
viewMenu = menubar.addMenu("View")
# File Menu
new_file = QAction('New', self)
new_file.setShortcut("Ctrl+N")
new_file.triggered.connect(self.newfile)
open_file = QAction('Open...', self)
open_file.setShortcut("Ctrl+O")
open_file.triggered.connect(self.openfile)
save_file = QAction('Save', self)
save_file.setShortcut("Ctrl+S")
save_file.triggered.connect(self.savefile)
save_as_file = QAction('Save As...', self)
save_as_file.setShortcut("Ctrl+Shift+S")
save_as_file.triggered.connect(self.saveasfile)
exit = QAction("Exit", self)
exit.triggered.connect(self.quit)
# Edit Menu
undo_edit = QAction("Undo", self)
undo_edit.setShortcut("Ctrl+Z")
undo_edit.triggered.connect(self.undo)
cut_edit = QAction("Cut", self)
cut_edit.setShortcut("Ctrl+X")
cut_edit.triggered.connect(self.cut)
copy_edit = QAction("Copy", self)
copy_edit.setShortcut("Ctrl+C")
copy_edit.triggered.connect(self.copy)
paste_edit = QAction("Paste", self)
paste_edit.setShortcut("Ctrl+V")
paste_edit.triggered.connect(self.paste)
delete_edit = QAction("Delete", self)
delete_edit.setShortcut("Supr")
delete_edit.triggered.connect(self.delete)
goto_edit = QAction("Go To...", self)
goto_edit.setShortcut("Ctrl+T")
goto_edit.triggered.connect(self.gotoline)
find_editor = QAction("Find", self)
find_editor.setShortcut("Ctrl+F")
select_all_edit = QAction("Select All", self)
select_all_edit.setShortcut("Ctrl+E")
time_edit = QAction("Date and Time", self)
time_edit.setShortcut("F5")
# Format Menu
font_format = QAction("Font", self)
# View Menu
zoom_view = QMenu("Zoom", self)
zoom_mas_view = QAction("Zoom In", self)
zoom_mas_view.setShortcut("Ctrl++")
zoom_menos_view = QAction("Ward Off", self)
zoom_menos_view.setShortcut("Ctrl+-")
zoom_pre_view = QAction("Restore Default Zoom", self)
zoom_pre_view.setShortcut("Ctrl+0")
zoom_view.addAction(zoom_mas_view)
zoom_view.addAction(zoom_menos_view)
zoom_view.addAction(zoom_pre_view)
statusbar_view = QAction("Status Bar", self)
fileMenu.addAction(new_file)
fileMenu.addAction(open_file)
fileMenu.addAction(save_file)
fileMenu.addAction(save_as_file)
fileMenu.addSeparator()
fileMenu.addAction(exit)
editMenu.addAction(undo_edit)
editMenu.addSeparator()
editMenu.addAction(cut_edit)
editMenu.addAction(copy_edit)
editMenu.addAction(paste_edit)
editMenu.addAction(delete_edit)
editMenu.addSeparator()
editMenu.addAction(goto_edit)
editMenu.addAction(find_editor)
editMenu.addSeparator()
editMenu.addAction(select_all_edit)
editMenu.addAction(time_edit)
viewMenu.addMenu(zoom_view)
viewMenu.addAction(statusbar_view)
self.setGeometry((width / 2) - 300, (height / 2) - 250, 600, 500)
self.setWindowTitle("NotePad 2.0")
self.show()
def newfile(self):
if self.textEdit.toPlainText() != "":
buttonReply = QMessageBox.question(self, 'Bloc de Notas 2.0', f"You want to save changes to Sin Titulo?", QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
if buttonReply == QMessageBox.Yes:
self.saveasfile()
else:
try:
name, _ = QFileDialog.getSaveFileName(self, "New File", "New File.txt", "All Files (*.*)")
url = QUrl.fromLocalFile(name)
name = url.fileName()
with open(name, "w") as f:
f.write("")
self.textEdit.clear()
self.file_name = name
except FileNotFoundError:
pass
else:
try:
name, _ = QFileDialog.getSaveFileName(self, "New File", "New File.txt", "All Files (*.*)")
url = QUrl.fromLocalFile(name)
name = url.fileName()
with open(name, "w") as f:
f.write("")
self.textEdit.clear()
self.file_name = name
except FileNotFoundError:
pass
def openfile(self):
if self.textEdit.toPlainText() != "":
buttonReply = QMessageBox.question(self, 'Bloc de Notas 2.0', f"You want to save changes to Sin Titulo?", QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
if buttonReply == QMessageBox.Yes:
self.saveasfile()
else:
try:
name, _ = QFileDialog.getOpenFileName(self, "New File", "New File.txt", "All Files (*.*)")
url = QUrl.fromLocalFile(name)
name = url.fileName()
with open(name, "r") as f:
content = f.read()
self.textEdit.setText(content)
except FileNotFoundError:
pass
else:
try:
name, _ = QFileDialog.getOpenFileName(self, "New File", "New File.txt", "All Files (*.*)")
url = QUrl.fromLocalFile(name)
name = url.fileName()
with open(name, "r") as f:
content = f.read()
self.textEdit.setText(content)
except FileNotFoundError:
pass
def savefile(self):
if self.textEdit.toPlainText() == "":
self.newfile()
elif self.textEdit.toPlainText() != "":
if self.file_name == None:
self.saveasfile()
else:
with open(self.file_name, "w") as f:
f.write(self.textEdit.toPlainText())
elif self.file_name == None:
self.saveasfile()
def saveasfile(self):
try:
name, _ = QFileDialog.getSaveFileName(self,'Save File', "New File.txt", "All Files (*.*)")
with open(name, "w") as f:
f.write(self.textEdit.toPlainText())
self.file_name = name
except FileNotFoundError:
pass
def quit(self):
sys.exit()
def undo(self):
self.textEdit.undo()
def cut(self):
self.textEdit.copy()
self.textEdit.insertPlainText("")
def copy(self):
self.textEdit.copy()
def paste(self):
text = QApplication.clipboard().text()
self.textEdit.insertPlainText(text)
def delete(self):
self.textEdit.insertPlainText("")
def gotoline(self):
self.lineWin.show()
app = QApplication(sys.argv)
Window = writter()
sys.exit(app.exec_())
答案 0 :(得分：1)
您正在gotolineWin小部件中创建另一个QTextEdit，这是不必要的，此外，还要移动QTextEdit的光标，该光标不是QMainWindow中显示的QTextEdit。考虑到这一点，我创建了一个QDialog，该对话框仅应接收添加了所需功能的QTextEdit。
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