95 lines
2.8 KiB
Python
95 lines
2.8 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2019年5月22日
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@author: Irony
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@site: https://pyqt.site , https://github.com/PyQt5
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@email: 892768447@qq.com
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@file:
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@description:
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"""
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import sys
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try:
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from PyQt5.QtCore import QRegExp
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from PyQt5.QtGui import QTextCharFormat, QTextCursor
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from PyQt5.QtWidgets import (QApplication, QMainWindow, QTextEdit,
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QToolBar, QLineEdit, QPushButton, QColorDialog, QHBoxLayout, QWidget)
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except ImportError:
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from PySide2.QtCore import QRegExp
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from PySide2.QtGui import QTextCharFormat, QTextCursor
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from PySide2.QtWidgets import (QApplication, QMainWindow, QTextEdit,
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QToolBar, QLineEdit, QPushButton, QColorDialog, QHBoxLayout, QWidget)
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class TextEdit(QMainWindow):
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def __init__(self, parent=None):
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super(TextEdit, self).__init__(parent)
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self.textEdit = QTextEdit(self)
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self.setCentralWidget(self.textEdit)
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widget = QWidget(self)
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vb = QHBoxLayout(widget)
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vb.setContentsMargins(0, 0, 0, 0)
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self.findText = QLineEdit(self)
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self.findText.setText('self')
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findBtn = QPushButton('高亮', self)
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findBtn.clicked.connect(self.highlight)
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vb.addWidget(self.findText)
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vb.addWidget(findBtn)
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tb = QToolBar(self)
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tb.addWidget(widget)
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self.addToolBar(tb)
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def setText(self, text):
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self.textEdit.setPlainText(text)
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def highlight(self):
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text = self.findText.text() # 输入框中的文字
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if not text:
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return
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col = QColorDialog.getColor(self.textEdit.textColor(), self)
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if not col.isValid():
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return
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# 恢复默认的颜色
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cursor = self.textEdit.textCursor()
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cursor.select(QTextCursor.Document)
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cursor.setCharFormat(QTextCharFormat())
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cursor.clearSelection()
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self.textEdit.setTextCursor(cursor)
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# 文字颜色
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fmt = QTextCharFormat()
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fmt.setForeground(col)
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# 正则
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expression = QRegExp(text)
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self.textEdit.moveCursor(QTextCursor.Start)
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cursor = self.textEdit.textCursor()
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# 循环查找设置颜色
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pos = 0
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index = expression.indexIn(self.textEdit.toPlainText(), pos)
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while index >= 0:
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cursor.setPosition(index)
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cursor.movePosition(QTextCursor.Right,
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QTextCursor.KeepAnchor, len(text))
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cursor.mergeCharFormat(fmt)
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pos = index + expression.matchedLength()
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index = expression.indexIn(self.textEdit.toPlainText(), pos)
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if __name__ == '__main__':
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app = QApplication(sys.argv)
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textEdit = TextEdit()
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textEdit.resize(800, 600)
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textEdit.show()
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textEdit.setText(open(sys.argv[0], 'rb').read().decode())
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sys.exit(app.exec_())
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