diff options
Diffstat (limited to 'examples/widgets/richtext/syntaxhighlighter.py')
| -rw-r--r-- | examples/widgets/richtext/syntaxhighlighter.py | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/examples/widgets/richtext/syntaxhighlighter.py b/examples/widgets/richtext/syntaxhighlighter.py deleted file mode 100644 index 52b3d53b8..000000000 --- a/examples/widgets/richtext/syntaxhighlighter.py +++ /dev/null @@ -1,203 +0,0 @@ - -############################################################################# -## -## Copyright (C) 2013 Riverbank Computing Limited. -## Copyright (C) 2016 The Qt Company Ltd. -## Contact: http://www.qt.io/licensing/ -## -## This file is part of the Qt for Python examples of the Qt Toolkit. -## -## $QT_BEGIN_LICENSE:BSD$ -## You may use this file under the terms of the BSD license as follows: -## -## "Redistribution and use in source and binary forms, with or without -## modification, are permitted provided that the following conditions are -## met: -## * Redistributions of source code must retain the above copyright -## notice, this list of conditions and the following disclaimer. -## * Redistributions in binary form must reproduce the above copyright -## notice, this list of conditions and the following disclaimer in -## the documentation and/or other materials provided with the -## distribution. -## * Neither the name of The Qt Company Ltd nor the names of its -## contributors may be used to endorse or promote products derived -## from this software without specific prior written permission. -## -## -## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -## -## $QT_END_LICENSE$ -## -############################################################################# - -"""PySide6 port of the widgets/richtext/syntaxhighlighter example from Qt v5.x""" - -from PySide6 import QtCore, QtGui, QtWidgets - - -class MainWindow(QtWidgets.QMainWindow): - def __init__(self, parent=None): - super(MainWindow, self).__init__(parent) - - self.setupFileMenu() - self.setupHelpMenu() - self.setupEditor() - - self.setCentralWidget(self.editor) - self.setWindowTitle("Syntax Highlighter") - - def about(self): - QtWidgets.QMessageBox.about(self, "About Syntax Highlighter", - "<p>The <b>Syntax Highlighter</b> example shows how to " \ - "perform simple syntax highlighting by subclassing the " \ - "QSyntaxHighlighter class and describing highlighting " \ - "rules using regular expressions.</p>") - - def newFile(self): - self.editor.clear() - - def openFile(self, path=None): - if not path: - path = QtWidgets.QFileDialog.getOpenFileName(self, "Open File", - '', "C++ Files (*.cpp *.h)") - - if path: - inFile = QtCore.QFile(path[0]) - if inFile.open(QtCore.QFile.ReadOnly | QtCore.QFile.Text): - text = inFile.readAll() - text = str(text, encoding='ascii') - self.editor.setPlainText(text) - - def setupEditor(self): - font = QtGui.QFont() - font.setFamily('Courier') - font.setFixedPitch(True) - font.setPointSize(10) - - self.editor = QtWidgets.QTextEdit() - self.editor.setFont(font) - - self.highlighter = Highlighter(self.editor.document()) - - def setupFileMenu(self): - fileMenu = QtWidgets.QMenu("&File", self) - self.menuBar().addMenu(fileMenu) - - fileMenu.addAction("&New...", self.newFile, "Ctrl+N") - fileMenu.addAction("&Open...", self.openFile, "Ctrl+O") - fileMenu.addAction("E&xit", qApp.quit, "Ctrl+Q") - - def setupHelpMenu(self): - helpMenu = QtWidgets.QMenu("&Help", self) - self.menuBar().addMenu(helpMenu) - - helpMenu.addAction("&About", self.about) - helpMenu.addAction("About &Qt", qApp.aboutQt) - - -class Highlighter(QtGui.QSyntaxHighlighter): - def __init__(self, parent=None): - super(Highlighter, self).__init__(parent) - - keywordFormat = QtGui.QTextCharFormat() - keywordFormat.setForeground(QtCore.Qt.darkBlue) - keywordFormat.setFontWeight(QtGui.QFont.Bold) - - keywordPatterns = ["\\bchar\\b", "\\bclass\\b", "\\bconst\\b", - "\\bdouble\\b", "\\benum\\b", "\\bexplicit\\b", "\\bfriend\\b", - "\\binline\\b", "\\bint\\b", "\\blong\\b", "\\bnamespace\\b", - "\\boperator\\b", "\\bprivate\\b", "\\bprotected\\b", - "\\bpublic\\b", "\\bshort\\b", "\\bsignals\\b", "\\bsigned\\b", - "\\bslots\\b", "\\bstatic\\b", "\\bstruct\\b", - "\\btemplate\\b", "\\btypedef\\b", "\\btypename\\b", - "\\bunion\\b", "\\bunsigned\\b", "\\bvirtual\\b", "\\bvoid\\b", - "\\bvolatile\\b"] - - self.highlightingRules = [(QtCore.QRegularExpression(pattern), keywordFormat) - for pattern in keywordPatterns] - - classFormat = QtGui.QTextCharFormat() - classFormat.setFontWeight(QtGui.QFont.Bold) - classFormat.setForeground(QtCore.Qt.darkMagenta) - pattern = QtCore.QRegularExpression(r'\bQ[A-Za-z]+\b') - assert pattern.isValid() - self.highlightingRules.append((pattern, classFormat)) - - singleLineCommentFormat = QtGui.QTextCharFormat() - singleLineCommentFormat.setForeground(QtCore.Qt.red) - pattern = QtCore.QRegularExpression('//[^\n]*') - assert pattern.isValid() - self.highlightingRules.append((pattern, singleLineCommentFormat)) - - self.multiLineCommentFormat = QtGui.QTextCharFormat() - self.multiLineCommentFormat.setForeground(QtCore.Qt.red) - - quotationFormat = QtGui.QTextCharFormat() - quotationFormat.setForeground(QtCore.Qt.darkGreen) - pattern = QtCore.QRegularExpression('".*"') - assert pattern.isValid() - self.highlightingRules.append((pattern, quotationFormat)) - - functionFormat = QtGui.QTextCharFormat() - functionFormat.setFontItalic(True) - functionFormat.setForeground(QtCore.Qt.blue) - pattern = QtCore.QRegularExpression(r'\b[A-Za-z0-9_]+(?=\()') - assert pattern.isValid() - self.highlightingRules.append((pattern, functionFormat)) - - self.commentStartExpression = QtCore.QRegularExpression(r'/\*') - assert self.commentStartExpression.isValid() - self.commentEndExpression = QtCore.QRegularExpression(r'\*/') - assert self.commentEndExpression.isValid() - - def highlightBlock(self, text): - for pattern, format in self.highlightingRules: - match = pattern.match(text) - while match.hasMatch(): - index = match.capturedStart(0) - length = match.capturedLength(0) - self.setFormat(index, length, format) - match = pattern.match(text, index + length) - - self.setCurrentBlockState(0) - - startIndex = 0 - if self.previousBlockState() != 1: - match = self.commentStartExpression.match(text) - startIndex = match.capturedStart(0) if match.hasMatch() else -1 - - while startIndex >= 0: - match = self.commentEndExpression.match(text, startIndex) - if match.hasMatch(): - endIndex = match.capturedStart(0) - length = match.capturedLength(0) - commentLength = endIndex - startIndex + length - else: - self.setCurrentBlockState(1) - commentLength = len(text) - startIndex - - self.setFormat(startIndex, commentLength, - self.multiLineCommentFormat) - match = self.commentStartExpression.match(text, startIndex + commentLength) - startIndex = match.capturedStart(0) if match.hasMatch() else -1 - - -if __name__ == '__main__': - - import sys - - app = QtWidgets.QApplication(sys.argv) - window = MainWindow() - window.resize(640, 512) - window.show() - sys.exit(app.exec_()) |