- Qt 5.5
- Qt Widgets
- SIP Dialog Example
- dialog.cpp Example File
- Qt 5.5.1 Reference Documentation

# dialog.cpp Example File

dialogs/sipdialog/dialog.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** 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 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."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    #include <QtWidgets>

    #include "dialog.h"

    Dialog::Dialog()
    {
        desktopGeometry = QApplication::desktop()->availableGeometry(0);

        setWindowTitle(tr("SIP Dialog Example"));
        QScrollArea *scrollArea = new QScrollArea(this);
        QGroupBox *groupBox = new QGroupBox(scrollArea);
        groupBox->setTitle(tr("SIP Dialog Example"));
        QGridLayout *gridLayout = new QGridLayout(groupBox);
        groupBox->setLayout(gridLayout);

        QLineEdit* lineEdit = new QLineEdit(groupBox);
        lineEdit->setText(tr("Open and close the SIP"));
        lineEdit->setMinimumWidth(220);

        QLabel* label = new QLabel(groupBox);
        label->setText(tr("This dialog resizes if the SIP is opened"));
        label->setMinimumWidth(220);

        QPushButton* button = new QPushButton(groupBox);
        button->setText(tr("Close Dialog"));
        button->setMinimumWidth(220);

        if (desktopGeometry.height() < 400)
            gridLayout->setVerticalSpacing(80);
        else
            gridLayout->setVerticalSpacing(150);

        gridLayout->addWidget(label);
        gridLayout->addWidget(lineEdit);
        gridLayout->addWidget(button);

        scrollArea->setWidget(groupBox);
        QHBoxLayout* layout = new QHBoxLayout();
        layout->addWidget(scrollArea);
        setLayout(layout);
        scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);

        connect(button, SIGNAL(clicked()),
            qApp, SLOT(closeAllWindows()));
        connect(QApplication::desktop(), SIGNAL(workAreaResized(int)),
            this, SLOT(desktopResized(int)));
    }

    void Dialog::desktopResized(int screen)
    {
        if (screen != 0)
            return;
        reactToSIP();
    }

    void Dialog::reactToSIP()
    {
        QRect availableGeometry = QApplication::desktop()->availableGeometry(0);

        if (desktopGeometry != availableGeometry) {
            if (windowState() | Qt::WindowMaximized)
                setWindowState(windowState() & ~Qt::WindowMaximized);

            setGeometry(availableGeometry);
        }

        desktopGeometry = availableGeometry;
    }