|  | Home · All Classes · All Functions · Overviews

# previewform.cpp Example File
tools/codecs/previewform.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** Commercial Usage
     ** Licensees holding valid Qt Commercial licenses may use this file in
     ** accordance with the Qt Commercial License Agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
     ** a written agreement between you and Nokia.
     **
     ** GNU Lesser General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU Lesser
     ** General Public License version 2.1 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.LGPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU Lesser General Public License version 2.1 requirements
     ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
     ** In addition, as a special exception, Nokia gives you certain additional
     ** rights.  These rights are described in the Nokia Qt LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU General Public License version 3.0 requirements will be
     ** met: http://www.gnu.org/copyleft/gpl.html.
     **
     ** If you have questions regarding the use of this file, please contact
     ** Nokia at qt-info@nokia.com.
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include <QtGui>

     #include "previewform.h"

     PreviewForm::PreviewForm(QWidget *parent)
         : QDialog(parent)
     {
         encodingComboBox = new QComboBox;

         encodingLabel = new QLabel(tr("&Encoding:"));
         encodingLabel->setBuddy(encodingComboBox);

         textEdit = new QTextEdit;
         textEdit->setLineWrapMode(QTextEdit::NoWrap);
         textEdit->setReadOnly(true);

         buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok
                                         | QDialogButtonBox::Cancel);

         connect(encodingComboBox, SIGNAL(activated(int)),
                 this, SLOT(updateTextEdit()));
         connect(buttonBox, SIGNAL(accepted()), this, SLOT(accept()));
         connect(buttonBox, SIGNAL(rejected()), this, SLOT(reject()));

         QGridLayout *mainLayout = new QGridLayout;
         mainLayout->addWidget(encodingLabel, 0, 0);
         mainLayout->addWidget(encodingComboBox, 0, 1);
         mainLayout->addWidget(textEdit, 1, 0, 1, 2);
         mainLayout->addWidget(buttonBox, 2, 0, 1, 2);
         setLayout(mainLayout);

         setWindowTitle(tr("Choose Encoding"));
         resize(400, 300);
     }

     void PreviewForm::setCodecList(const QList<QTextCodec *> &list)
     {
         encodingComboBox->clear();
         foreach (QTextCodec *codec, list)
             encodingComboBox->addItem(codec->name(), codec->mibEnum());
     }

     void PreviewForm::setEncodedData(const QByteArray &data)
     {
         encodedData = data;
         updateTextEdit();
     }

     void PreviewForm::updateTextEdit()
     {
         int mib = encodingComboBox->itemData(
                           encodingComboBox->currentIndex()).toInt();
         QTextCodec *codec = QTextCodec::codecForMib(mib);

         QTextStream in(&encodedData);
         in.setAutoDetectUnicode(false);
         in.setCodec(codec);
         decodedStr = in.readAll();

         textEdit->setPlainText(decodedStr);
     }