def __init__(self, parent, history):
super().__init__(parent=parent)
self.setWindowTitle("History")
layout = QVBoxLayout()
text = QPlainTextEdit()
font = QFont()
font.setFamily("monospace")
font.setStyleHint(QFont.Monospace)
text.setFont(font)
highlighter = PythonHighlighter(text.document()) # noqa: F841
text.setReadOnly(True)
text.setPlainText(history)
layout.addWidget(text)
buttonbox = QDialogButtonBox(QDialogButtonBox.Ok)
clipboardbutton = QPushButton("Copy to clipboard")
buttonbox.addButton(clipboardbutton, QDialogButtonBox.ActionRole)
clipboard = QGuiApplication.clipboard()
clipboardbutton.clicked.connect(
lambda: clipboard.setText(history + "\n"))
layout.addWidget(buttonbox)
self.setLayout(layout)
buttonbox.accepted.connect(self.accept)
self.resize(700, 500)
class MainWindow(QMainWindow):
def __init__(self, parent=None):
QMainWindow.__init__(self, parent)
self._highlighter = Highlighter()
self.setup_file_menu()
self.setup_editor()
self.setCentralWidget(self._editor)
self.setWindowTitle(self.tr("Syntax Highlighter"))
def new_file(self):
self._editor.clear()
def open_file(self, path=""):
file_name = path
if not file_name:
file_name, _ = QFileDialog.getOpenFileName(
self, self.tr("Open File"), "",
"qmake Files (*.pro *.prf *.pri)")
if file_name:
inFile = QFile(file_name)
if inFile.open(QFile.ReadOnly | QFile.Text):
stream = QTextStream(inFile)
self._editor.setPlainText(stream.readAll())
def setup_editor(self):
variable_format = QTextCharFormat()
variable_format.setFontWeight(QFont.Bold)
variable_format.setForeground(Qt.blue)
self._highlighter.add_mapping("\\b[A-Z_]+\\b", variable_format)
single_line_comment_format = QTextCharFormat()
single_line_comment_format.setBackground(QColor("#77ff77"))
self._highlighter.add_mapping("#[^\n]*", single_line_comment_format)
quotation_format = QTextCharFormat()
quotation_format.setBackground(Qt.cyan)
quotation_format.setForeground(Qt.blue)
self._highlighter.add_mapping("\".*\"", quotation_format)
function_format = QTextCharFormat()
function_format.setFontItalic(True)
function_format.setForeground(Qt.blue)
self._highlighter.add_mapping("\\b[a-z0-9_]+\\(.*\\)", function_format)
font = QFont()
font.setFamily("Courier")
font.setFixedPitch(True)
font.setPointSize(10)
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"))
new_file_act = file_menu.addAction(self.tr("&New..."))
new_file_act.setShortcut(QKeySequence(QKeySequence.New))
new_file_act.triggered.connect(self.new_file)
open_file_act = file_menu.addAction(self.tr("&Open..."))
open_file_act.setShortcut(QKeySequence(QKeySequence.Open))
open_file_act.triggered.connect(self.open_file)
quit_act = file_menu.addAction(self.tr("E&xit"))
quit_act.setShortcut(QKeySequence(QKeySequence.Quit))
quit_act.triggered.connect(self.close)
help_menu = self.menuBar().addMenu("&Help")
help_menu.addAction("About &Qt", qApp.aboutQt)