diff options
Diffstat (limited to 'examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.py')
| -rw-r--r-- | examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.py | 180 |
1 files changed, 68 insertions, 112 deletions
diff --git a/examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.py b/examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.py index 55805e469..021328977 100644 --- a/examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.py +++ b/examples/widgets/richtext/syntaxhighlighter/syntaxhighlighter.py @@ -1,153 +1,109 @@ +# Copyright (C) 2013 Riverbank Computing Limited. +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause -############################################################################ -## -## 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." -## -## $QT_END_LICENSE$ -## -############################################################################# - -"""PySide2 port of the widgets/richtext/syntaxhighlighter example from Qt v5.x""" +"""PySide6 port of the widgets/richtext/syntaxhighlighter example from Qt v5.x""" +import os +from pathlib import Path import sys import re -from PySide2.QtCore import (QFile, Qt, QTextStream) -from PySide2.QtGui import (QColor, QFont, QKeySequence, QSyntaxHighlighter, - QTextCharFormat) -from PySide2.QtWidgets import (QApplication, QFileDialog, QMainWindow, - QPlainTextEdit) - -import syntaxhighlighter_rc +from PySide6.QtCore import (QFile, Qt, QTextStream) +from PySide6.QtGui import (QColor, QFont, QFontDatabase, QKeySequence, + QSyntaxHighlighter, QTextCharFormat) +from PySide6.QtWidgets import (QApplication, QFileDialog, QMainWindow, + QPlainTextEdit) class MainWindow(QMainWindow): def __init__(self, parent=None): QMainWindow.__init__(self, parent) - self.highlighter = Highlighter() + self._highlighter = Highlighter() - self.setupFileMenu() - self.setupEditor() + self.setup_file_menu() + self.setup_editor() - self.setCentralWidget(self.editor) + self.setCentralWidget(self._editor) self.setWindowTitle(self.tr("Syntax Highlighter")) - def newFile(self): - self.editor.clear() - - def openFile(self, path = ""): - fileName = path + def new_file(self): + self._editor.clear() - if not fileName: - fileName, _ = QFileDialog.getOpenFileName(self, self.tr("Open File"), "", - "qmake Files (*.pro *.prf *.pri)") + def open_file(self, path=""): + file_name = path - if fileName: - inFile = QFile(fileName) - if inFile.open(QFile.ReadOnly | QFile.Text): - stream = QTextStream(inFile) - self.editor.setPlainText(stream.readAll()) + if not file_name: + file_name, _ = QFileDialog.getOpenFileName(self, self.tr("Open File"), "", + "Python Files (*.py)") - def setupEditor(self): - variableFormat = QTextCharFormat() - variableFormat.setFontWeight(QFont.Bold) - variableFormat.setForeground(Qt.blue) - self.highlighter.addMapping("\\b[A-Z_]+\\b", variableFormat) + if file_name: + in_file = QFile(file_name) + if in_file.open(QFile.ReadOnly | QFile.Text): + stream = QTextStream(in_file) + self._editor.setPlainText(stream.readAll()) - singleLineCommentFormat = QTextCharFormat() - singleLineCommentFormat.setBackground(QColor("#77ff77")) - self.highlighter.addMapping("#[^\n]*", singleLineCommentFormat) + def setup_editor(self): + class_format = QTextCharFormat() + class_format.setFontWeight(QFont.Bold) + class_format.setForeground(Qt.blue) + pattern = r'^\s*class\s+\w+\(.*$' + self._highlighter.add_mapping(pattern, class_format) - quotationFormat = QTextCharFormat() - quotationFormat.setBackground(Qt.cyan) - quotationFormat.setForeground(Qt.blue) - self.highlighter.addMapping("\".*\"", quotationFormat) + function_format = QTextCharFormat() + function_format.setFontItalic(True) + function_format.setForeground(Qt.blue) + pattern = r'^\s*def\s+\w+\s*\(.*\)\s*:\s*$' + self._highlighter.add_mapping(pattern, function_format) - functionFormat = QTextCharFormat() - functionFormat.setFontItalic(True) - functionFormat.setForeground(Qt.blue) - self.highlighter.addMapping("\\b[a-z0-9_]+\\(.*\\)", functionFormat) + comment_format = QTextCharFormat() + comment_format.setBackground(QColor("#77ff77")) + self._highlighter.add_mapping(r'^\s*#.*$', comment_format) - font = QFont() - font.setFamily("Courier") - font.setFixedPitch(True) - font.setPointSize(10) + font = QFontDatabase.systemFont(QFontDatabase.FixedFont) + self._editor = QPlainTextEdit() + self._editor.setFont(font) + self._highlighter.setDocument(self._editor.document()) - self.editor = QPlainTextEdit() - self.editor.setFont(font) - self.highlighter.setDocument(self.editor.document()) + def setup_file_menu(self): + file_menu = self.menuBar().addMenu(self.tr("&File")) - def setupFileMenu(self): - fileMenu = self.menuBar().addMenu(self.tr("&File")) + new_file_act = file_menu.addAction(self.tr("&New...")) + new_file_act.setShortcut(QKeySequence(QKeySequence.New)) + new_file_act.triggered.connect(self.new_file) - newFileAct = fileMenu.addAction(self.tr("&New...")) - newFileAct.setShortcut(QKeySequence(QKeySequence.New)) - newFileAct.triggered.connect(self.newFile) + open_file_act = file_menu.addAction(self.tr("&Open...")) + open_file_act.setShortcut(QKeySequence(QKeySequence.Open)) + open_file_act.triggered.connect(self.open_file) - openFileAct = fileMenu.addAction(self.tr("&Open...")) - openFileAct.setShortcut(QKeySequence(QKeySequence.Open)) - openFileAct.triggered.connect(self.openFile) + quit_act = file_menu.addAction(self.tr("E&xit")) + quit_act.setShortcut(QKeySequence(QKeySequence.Quit)) + quit_act.triggered.connect(self.close) - quitAct = fileMenu.addAction(self.tr("E&xit")) - quitAct.setShortcut(QKeySequence(QKeySequence.Quit)) - quitAct.triggered.connect(self.close) - - helpMenu = self.menuBar().addMenu("&Help") - helpMenu.addAction("About &Qt", qApp.aboutQt) + help_menu = self.menuBar().addMenu("&Help") + help_menu.addAction("About &Qt", qApp.aboutQt) # noqa: F821 class Highlighter(QSyntaxHighlighter): def __init__(self, parent=None): QSyntaxHighlighter.__init__(self, parent) - self.mappings = {} + self._mappings = {} - def addMapping(self, pattern, format): - self.mappings[pattern] = format + def add_mapping(self, pattern, format): + self._mappings[pattern] = format def highlightBlock(self, text): - for pattern in self.mappings: - for m in re.finditer(pattern,text): - s,e = m.span() - self.setFormat(s, e - s, self.mappings[pattern]) + for pattern, format in self._mappings.items(): + for match in re.finditer(pattern, text): + start, end = match.span() + self.setFormat(start, end - start, format) + if __name__ == '__main__': app = QApplication(sys.argv) window = MainWindow() window.resize(640, 512) window.show() - window.openFile(":/examples/example") - sys.exit(app.exec_()) + window.open_file(os.fspath(Path(__file__).resolve())) + sys.exit(app.exec()) |