#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited.
## Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:BSD$
## 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 Nokia Corporation and its Subsidiary(-ies) 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."
## $QT_END_LICENSE$
##
#############################################################################
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QKeySequence
from PyQt5.QtWidgets import (QAction, QActionGroup, QApplication, QFrame,
QLabel, QMainWindow, QMenu, QMessageBox, QSizePolicy, QVBoxLayout,
QWidget)
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
widget = QWidget()
self.setCentralWidget(widget)
topFiller = QWidget()
topFiller.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.infoLabel = QLabel(
"<i>Choose a menu option, or right-click to invoke a context menu</i>",
alignment=Qt.AlignCenter)
self.infoLabel.setFrameStyle(QFrame.StyledPanel | QFrame.Sunken)
bottomFiller = QWidget()
bottomFiller.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
vbox = QVBoxLayout()
vbox.setContentsMargins(5, 5, 5, 5)
vbox.addWidget(topFiller)
vbox.addWidget(self.infoLabel)
vbox.addWidget(bottomFiller)
widget.setLayout(vbox)
self.createActions()
self.createMenus()
message = "A context menu is available by right-clicking"
self.statusBar().showMessage(message)
self.setWindowTitle("Menus")
self.setMinimumSize(160,160)
self.resize(480,320)
def contextMenuEvent(self, event):
menu = QMenu(self)
menu.addAction(self.cutAct)
menu.addAction(self.copyAct)
menu.addAction(self.pasteAct)
menu.exec_(event.globalPos())
def newFile(self):
self.infoLabel.setText("Invoked <b>File|New</b>")
def open(self):
self.infoLabel.setText("Invoked <b>File|Open</b>")
def save(self):
self.infoLabel.setText("Invoked <b>File|Save</b>")
def print_(self):
self.infoLabel.setText("Invoked <b>File|Print</b>")
def undo(self):
self.infoLabel.setText("Invoked <b>Edit|Undo</b>")
def redo(self):
self.infoLabel.setText("Invoked <b>Edit|Redo</b>")
def cut(self):
self.infoLabel.setText("Invoked <b>Edit|Cut</b>")
def copy(self):
self.infoLabel.setText("Invoked <b>Edit|Copy</b>")
def paste(self):
self.infoLabel.setText("Invoked <b>Edit|Paste</b>")
def bold(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Bold</b>")
def italic(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Italic</b>")
def leftAlign(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Left Align</b>")
def rightAlign(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Right Align</b>")
def justify(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Justify</b>")
def center(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Center</b>")
def setLineSpacing(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Set Line Spacing</b>")
def setParagraphSpacing(self):
self.infoLabel.setText("Invoked <b>Edit|Format|Set Paragraph Spacing</b>")
def about(self):
self.infoLabel.setText("Invoked <b>Help|About</b>")
QMessageBox.about(self, "About Menu",
"The <b>Menu</b> example shows how to create menu-bar menus "
"and context menus.")
def aboutQt(self):
self.infoLabel.setText("Invoked <b>Help|About Qt</b>")
def createActions(self):
self.newAct = QAction("&New", self, shortcut=QKeySequence.New,
statusTip="Create a new file", triggered=self.newFile)
self.openAct = QAction("&Open...", self, shortcut=QKeySequence.Open,
statusTip="Open an existing file", triggered=self.open)
self.saveAct = QAction("&Save", self, shortcut=QKeySequence.Save,
statusTip="Save the document to disk", triggered=self.save)
self.printAct = QAction("&Print...", self, shortcut=QKeySequence.Print,
statusTip="Print the document", triggered=self.print_)
self.exitAct = QAction("E&xit", self, shortcut="Ctrl+Q",
statusTip="Exit the application", triggered=self.close)
self.undoAct = QAction("&Undo", self, shortcut=QKeySequence.Undo,
statusTip="Undo the last operation", triggered=self.undo)
self.redoAct = QAction("&Redo", self, shortcut=QKeySequence.Redo,
statusTip="Redo the last operation", triggered=self.redo)
self.cutAct = QAction("Cu&t", self, shortcut=QKeySequence.Cut,
statusTip="Cut the current selection's contents to the clipboard",
triggered=self.cut)
self.copyAct = QAction("&Copy", self, shortcut=QKeySequence.Copy,
statusTip="Copy the current selection's contents to the clipboard",
triggered=self.copy)
self.pasteAct = QAction("&Paste", self, shortcut=QKeySequence.Paste,
statusTip="Paste the clipboard's contents into the current selection",
triggered=self.paste)
self.boldAct = QAction("&Bold", self, checkable=True,
shortcut="Ctrl+B", statusTip="Make the text bold",
triggered=self.bold)
boldFont = self.boldAct.font()
boldFont.setBold(True)
self.boldAct.setFont(boldFont)
self.italicAct = QAction("&Italic", self, checkable=True,
shortcut="Ctrl+I", statusTip="Make the text italic",
triggered=self.italic)
italicFont = self.italicAct.font()
italicFont.setItalic(True)
self.italicAct.setFont(italicFont)
self.setLineSpacingAct = QAction("Set &Line Spacing...", self,
statusTip="Change the gap between the lines of a paragraph",
triggered=self.setLineSpacing)
self.setParagraphSpacingAct = QAction("Set &Paragraph Spacing...",
self, statusTip="Change the gap between paragraphs",
triggered=self.setParagraphSpacing)
self.aboutAct = QAction("&About", self,
statusTip="Show the application's About box",
triggered=self.about)
self.aboutQtAct = QAction("About &Qt", self,
statusTip="Show the Qt library's About box",
triggered=self.aboutQt)
self.aboutQtAct.triggered.connect(QApplication.instance().aboutQt)
self.leftAlignAct = QAction("&Left Align", self, checkable=True,
shortcut="Ctrl+L", statusTip="Left align the selected text",
triggered=self.leftAlign)
self.rightAlignAct = QAction("&Right Align", self, checkable=True,
shortcut="Ctrl+R", statusTip="Right align the selected text",
triggered=self.rightAlign)
self.justifyAct = QAction("&Justify", self, checkable=True,
shortcut="Ctrl+J", statusTip="Justify the selected text",
triggered=self.justify)
self.centerAct = QAction("&Center", self, checkable=True,
shortcut="Ctrl+C", statusTip="Center the selected text",
triggered=self.center)
self.alignmentGroup = QActionGroup(self)
self.alignmentGroup.addAction(self.leftAlignAct)
self.alignmentGroup.addAction(self.rightAlignAct)
self.alignmentGroup.addAction(self.justifyAct)
self.alignmentGroup.addAction(self.centerAct)
self.leftAlignAct.setChecked(True)
def createMenus(self):
self.fileMenu = self.menuBar().addMenu("&File")
self.fileMenu.addAction(self.newAct)
self.fileMenu.addAction(self.openAct)
self.fileMenu.addAction(self.saveAct)
self.fileMenu.addAction(self.printAct)
self.fileMenu.addSeparator()
self.fileMenu.addAction(self.exitAct)
self.editMenu = self.menuBar().addMenu("&Edit")
self.editMenu.addAction(self.undoAct)
self.editMenu.addAction(self.redoAct)
self.editMenu.addSeparator()
self.editMenu.addAction(self.cutAct)
self.editMenu.addAction(self.copyAct)
self.editMenu.addAction(self.pasteAct)
self.editMenu.addSeparator()
self.helpMenu = self.menuBar().addMenu("&Help")
self.helpMenu.addAction(self.aboutAct)
self.helpMenu.addAction(self.aboutQtAct)
self.formatMenu = self.editMenu.addMenu("&Format")
self.formatMenu.addAction(self.boldAct)
self.formatMenu.addAction(self.italicAct)
self.formatMenu.addSeparator().setText("Alignment")
self.formatMenu.addAction(self.leftAlignAct)
self.formatMenu.addAction(self.rightAlignAct)
self.formatMenu.addAction(self.justifyAct)
self.formatMenu.addAction(self.centerAct)
self.formatMenu.addSeparator()
self.formatMenu.addAction(self.setLineSpacingAct)
self.formatMenu.addAction(self.setParagraphSpacingAct)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())
