Qt 5.6 | Qt Widgets | Config Dialog Example | configdialog.cpp Example File

Qt 5.6.2 Reference Documentation

# configdialog.cpp Example File

dialogs/configdialog/configdialog.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 "configdialog.h"
      #include "pages.h"

      ConfigDialog::ConfigDialog()
      {
          contentsWidget = new QListWidget;
          contentsWidget->setViewMode(QListView::IconMode);
          contentsWidget->setIconSize(QSize(96, 84));
          contentsWidget->setMovement(QListView::Static);
          contentsWidget->setMaximumWidth(128);
          contentsWidget->setSpacing(12);

          pagesWidget = new QStackedWidget;
          pagesWidget->addWidget(new ConfigurationPage);
          pagesWidget->addWidget(new UpdatePage);
          pagesWidget->addWidget(new QueryPage);

          QPushButton *closeButton = new QPushButton(tr("Close"));

          createIcons();
          contentsWidget->setCurrentRow(0);

          connect(closeButton, &QAbstractButton::clicked, this, &QWidget::close);

          QHBoxLayout *horizontalLayout = new QHBoxLayout;
          horizontalLayout->addWidget(contentsWidget);
          horizontalLayout->addWidget(pagesWidget, 1);

          QHBoxLayout *buttonsLayout = new QHBoxLayout;
          buttonsLayout->addStretch(1);
          buttonsLayout->addWidget(closeButton);

          QVBoxLayout *mainLayout = new QVBoxLayout;
          mainLayout->addLayout(horizontalLayout);
          mainLayout->addStretch(1);
          mainLayout->addSpacing(12);
          mainLayout->addLayout(buttonsLayout);
          setLayout(mainLayout);

          setWindowTitle(tr("Config Dialog"));
      }

      void ConfigDialog::createIcons()
      {
          QListWidgetItem *configButton = new QListWidgetItem(contentsWidget);
          configButton->setIcon(QIcon(":/images/config.png"));
          configButton->setText(tr("Configuration"));
          configButton->setTextAlignment(Qt::AlignHCenter);
          configButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

          QListWidgetItem *updateButton = new QListWidgetItem(contentsWidget);
          updateButton->setIcon(QIcon(":/images/update.png"));
          updateButton->setText(tr("Update"));
          updateButton->setTextAlignment(Qt::AlignHCenter);
          updateButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

          QListWidgetItem *queryButton = new QListWidgetItem(contentsWidget);
          queryButton->setIcon(QIcon(":/images/query.png"));
          queryButton->setText(tr("Query"));
          queryButton->setTextAlignment(Qt::AlignHCenter);
          queryButton->setFlags(Qt::ItemIsSelectable | Qt::ItemIsEnabled);

          connect(contentsWidget, &QListWidget::currentItemChanged, this, &ConfigDialog::changePage);
      }

      void ConfigDialog::changePage(QListWidgetItem *current, QListWidgetItem *previous)
      {
          if (!current)
              current = previous;

          pagesWidget->setCurrentIndex(contentsWidget->row(current));
      }