| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the test suite of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
| ** Commercial License Usage |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
| ** included in the packaging of this file. Please review the following |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| |
| #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(); |
| } |
| |