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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QWidget>
#include <QHBoxLayout>
#include <QApplication>
#include <QPainter>
#include <QImage>
#include <QImageReader>
class MyWidget : public QWidget
{
public:
MyWidget(QWidget * parent, const QString &imagefname, bool scaleImage)
: QWidget(parent), fileName(imagefname), scale(scaleImage)
{
}
virtual void paintEvent(QPaintEvent * /*event*/)
{
QPainter painter(this);
QImageReader reader(fileName);
if (!reader.canRead()) {
qWarning("Unable to read image file %s", fileName.toLocal8Bit().constData());
return;
}
if (!scale){
QImage image = reader.read();
painter.drawImage(rect(), image);
}else{
reader.setScaledSize( QSize(rect().width(), rect().height()) );
QImage image = reader.read();
painter.drawImage(rect(), image);
}
}
private:
QString fileName;
bool scale;
};
// both the scaled and unscaled version of the CMYK encoded JPEG
// should have the same colors and not look corrupted.
int main(int argc, char** argv)
{
QApplication app(argc, argv);
QWidget mainWidget;
mainWidget.setWindowTitle("Colors in images are identical?");
mainWidget.setMinimumSize(400,400);
QHBoxLayout *l = new QHBoxLayout;
MyWidget *w1 = new MyWidget(&mainWidget,"Qt_logostrap_CMYK.jpg", false);
MyWidget *w2 = new MyWidget(&mainWidget,"Qt_logostrap_CMYK.jpg", true);
l->addWidget(w1);
l->addWidget(w2);
mainWidget.setLayout(l);
mainWidget.show();
return app.exec();
}
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