qt5base-lts/examples/tools/codecs/previewform.cpp

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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,
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** $QT_END_LICENSE$
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****************************************************************************/
#include <QtWidgets>
#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);
}