qt5base-lts/examples/mainwindows/menus/mainwindow.cpp
Jason McDonald 5635823e17 Remove "All rights reserved" line from license headers.
As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.

Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
2012-01-30 03:54:59 +01:00

371 lines
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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the 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 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."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtWidgets>
#include "mainwindow.h"
//! [0]
MainWindow::MainWindow()
{
QWidget *widget = new QWidget;
setCentralWidget(widget);
//! [0]
//! [1]
QWidget *topFiller = new QWidget;
topFiller->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
infoLabel = new QLabel(tr("<i>Choose a menu option, or right-click to "
"invoke a context menu</i>"));
infoLabel->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
infoLabel->setAlignment(Qt::AlignCenter);
QWidget *bottomFiller = new QWidget;
bottomFiller->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
QVBoxLayout *layout = new QVBoxLayout;
layout->setMargin(5);
layout->addWidget(topFiller);
layout->addWidget(infoLabel);
layout->addWidget(bottomFiller);
widget->setLayout(layout);
//! [1]
//! [2]
createActions();
createMenus();
QString message = tr("A context menu is available by right-clicking");
statusBar()->showMessage(message);
setWindowTitle(tr("Menus"));
setMinimumSize(160, 160);
resize(480, 320);
}
//! [2]
//! [3]
void MainWindow::contextMenuEvent(QContextMenuEvent *event)
{
QMenu menu(this);
menu.addAction(cutAct);
menu.addAction(copyAct);
menu.addAction(pasteAct);
menu.exec(event->globalPos());
}
//! [3]
void MainWindow::newFile()
{
infoLabel->setText(tr("Invoked <b>File|New</b>"));
}
void MainWindow::open()
{
infoLabel->setText(tr("Invoked <b>File|Open</b>"));
}
void MainWindow::save()
{
infoLabel->setText(tr("Invoked <b>File|Save</b>"));
}
void MainWindow::print()
{
infoLabel->setText(tr("Invoked <b>File|Print</b>"));
}
void MainWindow::undo()
{
infoLabel->setText(tr("Invoked <b>Edit|Undo</b>"));
}
void MainWindow::redo()
{
infoLabel->setText(tr("Invoked <b>Edit|Redo</b>"));
}
void MainWindow::cut()
{
infoLabel->setText(tr("Invoked <b>Edit|Cut</b>"));
}
void MainWindow::copy()
{
infoLabel->setText(tr("Invoked <b>Edit|Copy</b>"));
}
void MainWindow::paste()
{
infoLabel->setText(tr("Invoked <b>Edit|Paste</b>"));
}
void MainWindow::bold()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Bold</b>"));
}
void MainWindow::italic()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Italic</b>"));
}
void MainWindow::leftAlign()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Left Align</b>"));
}
void MainWindow::rightAlign()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Right Align</b>"));
}
void MainWindow::justify()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Justify</b>"));
}
void MainWindow::center()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Center</b>"));
}
void MainWindow::setLineSpacing()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Set Line Spacing</b>"));
}
void MainWindow::setParagraphSpacing()
{
infoLabel->setText(tr("Invoked <b>Edit|Format|Set Paragraph Spacing</b>"));
}
void MainWindow::about()
{
infoLabel->setText(tr("Invoked <b>Help|About</b>"));
QMessageBox::about(this, tr("About Menu"),
tr("The <b>Menu</b> example shows how to create "
"menu-bar menus and context menus."));
}
void MainWindow::aboutQt()
{
infoLabel->setText(tr("Invoked <b>Help|About Qt</b>"));
}
//! [4]
void MainWindow::createActions()
{
//! [5]
newAct = new QAction(tr("&New"), this);
newAct->setShortcuts(QKeySequence::New);
newAct->setStatusTip(tr("Create a new file"));
connect(newAct, SIGNAL(triggered()), this, SLOT(newFile()));
//! [4]
openAct = new QAction(tr("&Open..."), this);
openAct->setShortcuts(QKeySequence::Open);
openAct->setStatusTip(tr("Open an existing file"));
connect(openAct, SIGNAL(triggered()), this, SLOT(open()));
//! [5]
saveAct = new QAction(tr("&Save"), this);
saveAct->setShortcuts(QKeySequence::Save);
saveAct->setStatusTip(tr("Save the document to disk"));
connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));
printAct = new QAction(tr("&Print..."), this);
printAct->setShortcuts(QKeySequence::Print);
printAct->setStatusTip(tr("Print the document"));
connect(printAct, SIGNAL(triggered()), this, SLOT(print()));
exitAct = new QAction(tr("E&xit"), this);
exitAct->setShortcuts(QKeySequence::Quit);
exitAct->setStatusTip(tr("Exit the application"));
connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));
undoAct = new QAction(tr("&Undo"), this);
undoAct->setShortcuts(QKeySequence::Undo);
undoAct->setStatusTip(tr("Undo the last operation"));
connect(undoAct, SIGNAL(triggered()), this, SLOT(undo()));
redoAct = new QAction(tr("&Redo"), this);
redoAct->setShortcuts(QKeySequence::Redo);
redoAct->setStatusTip(tr("Redo the last operation"));
connect(redoAct, SIGNAL(triggered()), this, SLOT(redo()));
cutAct = new QAction(tr("Cu&t"), this);
cutAct->setShortcuts(QKeySequence::Cut);
cutAct->setStatusTip(tr("Cut the current selection's contents to the "
"clipboard"));
connect(cutAct, SIGNAL(triggered()), this, SLOT(cut()));
copyAct = new QAction(tr("&Copy"), this);
copyAct->setShortcuts(QKeySequence::Copy);
copyAct->setStatusTip(tr("Copy the current selection's contents to the "
"clipboard"));
connect(copyAct, SIGNAL(triggered()), this, SLOT(copy()));
pasteAct = new QAction(tr("&Paste"), this);
pasteAct->setShortcuts(QKeySequence::Paste);
pasteAct->setStatusTip(tr("Paste the clipboard's contents into the current "
"selection"));
connect(pasteAct, SIGNAL(triggered()), this, SLOT(paste()));
boldAct = new QAction(tr("&Bold"), this);
boldAct->setCheckable(true);
boldAct->setShortcut(QKeySequence::Bold);
boldAct->setStatusTip(tr("Make the text bold"));
connect(boldAct, SIGNAL(triggered()), this, SLOT(bold()));
QFont boldFont = boldAct->font();
boldFont.setBold(true);
boldAct->setFont(boldFont);
italicAct = new QAction(tr("&Italic"), this);
italicAct->setCheckable(true);
italicAct->setShortcut(QKeySequence::Italic);
italicAct->setStatusTip(tr("Make the text italic"));
connect(italicAct, SIGNAL(triggered()), this, SLOT(italic()));
QFont italicFont = italicAct->font();
italicFont.setItalic(true);
italicAct->setFont(italicFont);
setLineSpacingAct = new QAction(tr("Set &Line Spacing..."), this);
setLineSpacingAct->setStatusTip(tr("Change the gap between the lines of a "
"paragraph"));
connect(setLineSpacingAct, SIGNAL(triggered()), this, SLOT(setLineSpacing()));
setParagraphSpacingAct = new QAction(tr("Set &Paragraph Spacing..."), this);
setLineSpacingAct->setStatusTip(tr("Change the gap between paragraphs"));
connect(setParagraphSpacingAct, SIGNAL(triggered()),
this, SLOT(setParagraphSpacing()));
aboutAct = new QAction(tr("&About"), this);
aboutAct->setStatusTip(tr("Show the application's About box"));
connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
aboutQtAct = new QAction(tr("About &Qt"), this);
aboutQtAct->setStatusTip(tr("Show the Qt library's About box"));
connect(aboutQtAct, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
connect(aboutQtAct, SIGNAL(triggered()), this, SLOT(aboutQt()));
leftAlignAct = new QAction(tr("&Left Align"), this);
leftAlignAct->setCheckable(true);
leftAlignAct->setShortcut(tr("Ctrl+L"));
leftAlignAct->setStatusTip(tr("Left align the selected text"));
connect(leftAlignAct, SIGNAL(triggered()), this, SLOT(leftAlign()));
rightAlignAct = new QAction(tr("&Right Align"), this);
rightAlignAct->setCheckable(true);
rightAlignAct->setShortcut(tr("Ctrl+R"));
rightAlignAct->setStatusTip(tr("Right align the selected text"));
connect(rightAlignAct, SIGNAL(triggered()), this, SLOT(rightAlign()));
justifyAct = new QAction(tr("&Justify"), this);
justifyAct->setCheckable(true);
justifyAct->setShortcut(tr("Ctrl+J"));
justifyAct->setStatusTip(tr("Justify the selected text"));
connect(justifyAct, SIGNAL(triggered()), this, SLOT(justify()));
centerAct = new QAction(tr("&Center"), this);
centerAct->setCheckable(true);
centerAct->setShortcut(tr("Ctrl+E"));
centerAct->setStatusTip(tr("Center the selected text"));
connect(centerAct, SIGNAL(triggered()), this, SLOT(center()));
//! [6] //! [7]
alignmentGroup = new QActionGroup(this);
alignmentGroup->addAction(leftAlignAct);
alignmentGroup->addAction(rightAlignAct);
alignmentGroup->addAction(justifyAct);
alignmentGroup->addAction(centerAct);
leftAlignAct->setChecked(true);
//! [6]
}
//! [7]
//! [8]
void MainWindow::createMenus()
{
//! [9] //! [10]
fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(newAct);
//! [9]
fileMenu->addAction(openAct);
//! [10]
fileMenu->addAction(saveAct);
fileMenu->addAction(printAct);
//! [11]
fileMenu->addSeparator();
//! [11]
fileMenu->addAction(exitAct);
editMenu = menuBar()->addMenu(tr("&Edit"));
editMenu->addAction(undoAct);
editMenu->addAction(redoAct);
editMenu->addSeparator();
editMenu->addAction(cutAct);
editMenu->addAction(copyAct);
editMenu->addAction(pasteAct);
editMenu->addSeparator();
helpMenu = menuBar()->addMenu(tr("&Help"));
helpMenu->addAction(aboutAct);
helpMenu->addAction(aboutQtAct);
//! [8]
//! [12]
formatMenu = editMenu->addMenu(tr("&Format"));
formatMenu->addAction(boldAct);
formatMenu->addAction(italicAct);
formatMenu->addSeparator()->setText(tr("Alignment"));
formatMenu->addAction(leftAlignAct);
formatMenu->addAction(rightAlignAct);
formatMenu->addAction(justifyAct);
formatMenu->addAction(centerAct);
formatMenu->addSeparator();
formatMenu->addAction(setLineSpacingAct);
formatMenu->addAction(setParagraphSpacingAct);
}
//! [12]