tests/manual/qimagereader/main.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the examples of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
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    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
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    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include <QtGui>
       
    43 
       
    44 class MyWidget : public QWidget
       
    45 {
       
    46 public:
       
    47     MyWidget(QWidget * parent, const QString &imagefname, bool scaleImage)
       
    48             : QWidget(parent), fileName(imagefname), scale(scaleImage)
       
    49     {
       
    50 
       
    51     }
       
    52 
       
    53     virtual void paintEvent(QPaintEvent * /*event*/)
       
    54     {
       
    55         QPainter painter(this);
       
    56         QImageReader reader(fileName);
       
    57         if (!reader.canRead()) {
       
    58             qWarning("Unable to read image file %s", fileName.toLocal8Bit().constData());
       
    59             return;
       
    60         }
       
    61         if (!scale){
       
    62             QImage image = reader.read();
       
    63             painter.drawImage(rect(), image);
       
    64         }else{
       
    65             reader.setScaledSize( QSize(rect().width(), rect().height()) );
       
    66             QImage image = reader.read();
       
    67             painter.drawImage(rect(), image);
       
    68         }
       
    69     }
       
    70 
       
    71 private:
       
    72     QString fileName;
       
    73     bool scale;
       
    74 
       
    75 };
       
    76 
       
    77 
       
    78 
       
    79 // both the scaled and unscaled version of the CMYK encoded JPEG
       
    80 //      should have the same colors and not look corrupted.
       
    81 
       
    82 int main(int argc, char** argv)
       
    83 {
       
    84     QApplication app(argc, argv);
       
    85 
       
    86     QWidget mainWidget;
       
    87     mainWidget.setWindowTitle("Colors in images are identical?");
       
    88     mainWidget.setMinimumSize(400,400);
       
    89     QHBoxLayout *l = new QHBoxLayout;
       
    90     MyWidget *w1 = new MyWidget(&mainWidget,"Qt_logostrap_CMYK.jpg", false);
       
    91     MyWidget *w2 = new MyWidget(&mainWidget,"Qt_logostrap_CMYK.jpg", true);
       
    92     l->addWidget(w1);
       
    93     l->addWidget(w2);
       
    94     mainWidget.setLayout(l);
       
    95     mainWidget.show();
       
    96 
       
    97     return app.exec();
       
    98 }
       
    99