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| # The QDockWidget class provides a widget that can be
# docked inside a QMainWindow or floated
# as a top-level window on the desktop
import sys
from PySide6.QtCore import Qt
from PySide6.QtGui import QAction, QIcon, QTextCharFormat, QFont
from PySide6.QtWidgets import (QApplication, QMainWindow,
QTextEdit, QLabel, QMessageBox, QVBoxLayout, QPushButton,
QSpinBox, QDockWidget, QWidget)
class QEditor(QMainWindow):
def __init__(self):
super().__init__()
self.text_edit = QTextEdit()
self.setCentralWidget(self.text_edit)
self.label = QLabel()
self.statusBar().addWidget(self.label)
self.text_edit.textChanged.connect(self.on_text_changed)
menu_bar = self.menuBar()
file_menu = menu_bar.addMenu('&File')
exit_action = QAction(self)
exit_action.setText('&Exit')
exit_action.setIcon(QIcon('./icons/exit.png'))
exit_action.triggered.connect(QApplication.quit)
file_menu.addAction(exit_action)
help_menu = menu_bar.addMenu('&Help')
about_action = QAction(self)
about_action.setText('&About')
about_action.setIcon(QIcon('./icons/about.png'))
about_action.triggered.connect(self.show_messagebox)
help_menu.addAction(about_action)
file_toolbar = self.addToolBar('File')
file_toolbar.addAction(exit_action)
file_toolbar.addAction(about_action)
file_toolbar.setToolButtonStyle(
Qt.ToolButtonStyle.ToolButtonTextBesideIcon)
dock_widget = QDockWidget()
dock_widget.setMaximumWidth(50)
dock_widget.setAllowedAreas(
Qt.DockWidgetArea.LeftDockWidgetArea | Qt.DockWidgetArea.RightDockWidgetArea)
vbox = QVBoxLayout()
button_bold = QPushButton()
button_bold.setIcon(QIcon('./icons/bold.png'))
button_bold.setCheckable(True)
button_bold.setProperty('style', 'bold')
button_bold.clicked.connect(self.on_button_bold_clicked)
button_italic = QPushButton()
button_italic.setIcon(QIcon('./icons/italic.png'))
button_italic.setCheckable(True)
button_italic.setProperty('style', 'italic')
button_italic.clicked.connect(self.on_button_italic_clicked)
font_size_spinbox = QSpinBox()
font_size_spinbox.setMinimum(1)
font_size_spinbox.setMaximum(24)
font_size_spinbox.valueChanged.connect(self.on_value_changed)
vbox.addWidget(button_bold)
vbox.addWidget(button_italic)
vbox.addWidget(font_size_spinbox)
vbox.addStretch()
container = QWidget()
container.setLayout(vbox)
dock_widget.setWidget(container)
self.addDockWidget(Qt.DockWidgetArea.LeftDockWidgetArea, dock_widget)
def on_text_changed(self):
cursor = self.text_edit.textCursor()
size = len(self.text_edit.toPlainText())
x = str(cursor.blockNumber() + 1)
y = str(cursor.columnNumber() + 1)
self.label.setText('Chars: {}, Ln: {}, Col: {}'.format(size, x, y))
def show_messagebox(self):
messagebox = QMessageBox()
messagebox.setText('PyQt menu example')
messagebox.exec()
def on_button_bold_clicked(self):
sender = self.sender()
format = QTextCharFormat()
if sender.isChecked():
format.setFontWeight(QFont.Weight.Bold)
else:
format.setFontWeight(QFont.Weight.Normal)
cursor = self.text_edit.textCursor()
self.text_edit.mergeCurrentCharFormat(format)
self.text_edit.setFocus(Qt.FocusReason.OtherFocusReason)
def on_button_italic_clicked(self):
sender = self.sender()
format = QTextCharFormat()
if self.sender().isChecked():
format.setFontItalic(True)
else:
format.setFontItalic(False)
cursor = self.text_edit.textCursor()
self.text_edit.mergeCurrentCharFormat(format)
self.text_edit.setFocus(Qt.FocusReason.OtherFocusReason)
def on_value_changed(self, i):
format = QTextCharFormat()
format.setFontPointSize(i)
cursor = self.text_edit.textCursor()
self.text_edit.mergeCurrentCharFormat(format)
if __name__ == '__main__':
if not QApplication.instance():
app = QApplication(sys.argv)
else:
app = QApplication.instance()
editor = QEditor()
editor.show()
sys.exit(app.exec())
|