92 lines
2.8 KiB
C++
92 lines
2.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QWidget>
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#include <QHBoxLayout>
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#include <QApplication>
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#include <QPainter>
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#include <QImage>
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#include <QImageReader>
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class MyWidget : public QWidget
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{
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public:
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MyWidget(QWidget * parent, const QString &imagefname, bool scaleImage)
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: QWidget(parent), fileName(imagefname), scale(scaleImage)
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{
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}
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virtual void paintEvent(QPaintEvent * /*event*/)
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{
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QPainter painter(this);
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QImageReader reader(fileName);
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if (!reader.canRead()) {
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qWarning("Unable to read image file %s", fileName.toLocal8Bit().constData());
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return;
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}
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if (!scale){
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QImage image = reader.read();
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painter.drawImage(rect(), image);
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}else{
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reader.setScaledSize( QSize(rect().width(), rect().height()) );
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QImage image = reader.read();
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painter.drawImage(rect(), image);
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}
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}
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private:
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QString fileName;
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bool scale;
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};
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// both the scaled and unscaled version of the CMYK encoded JPEG
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// should have the same colors and not look corrupted.
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int main(int argc, char** argv)
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{
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QApplication app(argc, argv);
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QWidget mainWidget;
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mainWidget.setWindowTitle("Colors in images are identical?");
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mainWidget.setMinimumSize(400,400);
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QHBoxLayout *l = new QHBoxLayout;
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MyWidget *w1 = new MyWidget(&mainWidget,"Qt_logostrap_CMYK.jpg", false);
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MyWidget *w2 = new MyWidget(&mainWidget,"Qt_logostrap_CMYK.jpg", true);
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l->addWidget(w1);
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l->addWidget(w2);
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mainWidget.setLayout(l);
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mainWidget.show();
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return app.exec();
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}
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