67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
from PyQt5.QtWidgets import QApplication, QTextEdit
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from PyQt5.QtGui import QSyntaxHighlighter, QTextCharFormat, QFont, QFontMetrics
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from PyQt5.QtCore import QRegularExpression, Qt
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class CodeEditor(QTextEdit):
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def __init__(self, text:str=""):
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super().__init__()
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self.setFont(QFont("Courier New", 12))
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fontMetrics = QFontMetrics(self.font())
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tabWidth = 4 * fontMetrics.width(' ') # Calculate the width of a tab
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self.setTabStopWidth(tabWidth)
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self.setPlainText(text)
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self.highlighter = CodeHighlighter(self.document())
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self.highlighter.rehighlight()
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def paste(self):
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super().paste()
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self.highlighter.rehighlight()
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class CodeHighlighter(QSyntaxHighlighter):
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def __init__(self, document):
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super().__init__(document)
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self.highlightingRules = []
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# 定义 JSON 高亮规则
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self.keyFormat = QTextCharFormat()
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self.keyFormat.setForeground(Qt.GlobalColor.darkBlue)
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self.keyFormat.setFontWeight(QFont.Bold)
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self.valueFormat = QTextCharFormat()
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self.valueFormat.setForeground(Qt.GlobalColor.darkGreen)
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self.boolFormat = QTextCharFormat()
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self.boolFormat.setForeground(Qt.GlobalColor.red)
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self.numberFormat = QTextCharFormat()
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self.numberFormat.setForeground(Qt.GlobalColor.darkCyan)
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# 创建蓝色格式
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blueFormat = QTextCharFormat()
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blueFormat.setForeground(Qt.GlobalColor.blue)
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self.rules = [
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(QRegularExpression(r'\b(true|false|null)\b'), self.boolFormat),
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(QRegularExpression(r'\b(-?\d+\.?\d*)\b'), self.numberFormat),
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(QRegularExpression(r'\{'), blueFormat),
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(QRegularExpression(r'\}'), blueFormat),
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(QRegularExpression(r'\['), blueFormat),
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(QRegularExpression(r'\]'), blueFormat),
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(QRegularExpression(r'\"(\\.|[^"\\])*\"'), self.valueFormat),
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(QRegularExpression(r'\b(\w+)\s*:'), self.keyFormat)
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]
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def highlightBlock(self, text):
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for pattern, format in self.rules:
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expression = QRegularExpression(pattern)
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matchIterator = expression.globalMatch(text)
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while matchIterator.hasNext():
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match = matchIterator.next()
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self.setFormat(match.capturedStart(), match.capturedLength(), format)
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if __name__ == "__main__":
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import sys
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app = QApplication(sys.argv)
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editor = CodeEditor()
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editor.show()
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sys.exit(app.exec_()) |