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我創建一個QTextBrowser在我的代碼中顯示一個html表。但是當我嘗試使用setTextCursor方法將光標移動到特定行時,它未能做到這一點。如何將QTextBrowser的遊標(包含一個html表格)移動到PyQt5中的特定行?
文本瀏覽器的滾動條確實移動了,但沒有移動到特定的行。這個問題與HTML表格有關嗎?
import sys
from PyQt5.QtGui import QTextCursor
from PyQt5.QtWidgets import QWidget, QTextBrowser, QMainWindow, QPushButton, QHBoxLayout, QApplication
class MyTextBrowser(QTextBrowser):
def __init__(self, parent = None):
super(MyTextBrowser, self).__init__(parent)
self.createTable()
def createTable(self, line_num = 1):
# Create an html table with 100 lines
html = '<table><tbody>'
for i in range(0, 100):
# Highlight specified line
if line_num == i+1:
html += '<tr style="background-color: #0000FF;"><td>Line</td><td>%d</td></tr>' % (i+1)
else:
html += '<tr><td>Line</td><td>%d</td></tr>' % (i+1)
html += '</tbody></table>'
self.setHtml(html)
# Move the cursor to the specified line
cursor = QTextCursor(self.document().findBlockByLineNumber(line_num))
self.setTextCursor(cursor)
class MyWindow(QMainWindow):
def __init__(self, parent = None):
super(MyWindow, self).__init__(parent)
self.createLayout()
def createLayout(self):
# Create the text browser and a button
self.textBrowser = MyTextBrowser()
self.button = QPushButton('Move cursor')
self.button.clicked.connect(self.buttonClicked)
self.currentLine = 1
layout = QHBoxLayout()
layout.addWidget(self.button)
layout.addWidget(self.textBrowser)
window = QWidget()
window.setLayout(layout)
self.setCentralWidget(window)
def buttonClicked(self):
# Move the cursor down for 10 lines when the button is clicked
self.currentLine += 10
if self.currentLine > 100:
self.currentLine = 1
self.textBrowser.createTable(self.currentLine)
app = QApplication(sys.argv)
window = MyWindow()
window.resize(640, 480)
window.show()
sys.exit(app.exec_())