629 lines
20 KiB
C++
629 lines
20 KiB
C++
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/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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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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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtTest/QtTest>
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#include <QDebug>
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#include <QFile>
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#include <QImage>
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#include <QImageReader>
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#include <QImageWriter>
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#include <QLabel>
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#include <QPainter>
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#include <QSet>
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#if defined(Q_OS_SYMBIAN)
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# define SRCDIR ""
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#endif
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typedef QMap<QString, QString> QStringMap;
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typedef QList<int> QIntList;
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Q_DECLARE_METATYPE(QImage)
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Q_DECLARE_METATYPE(QStringMap)
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Q_DECLARE_METATYPE(QIntList)
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Q_DECLARE_METATYPE(QImageWriter::ImageWriterError)
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Q_DECLARE_METATYPE(QIODevice *)
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Q_DECLARE_METATYPE(QImage::Format)
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//TESTED_FILES=
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class tst_QImageWriter : public QObject
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{
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Q_OBJECT
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public:
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tst_QImageWriter();
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virtual ~tst_QImageWriter();
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public slots:
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void init();
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void cleanup();
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private slots:
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void getSetCheck();
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void writeImage_data();
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void writeImage();
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void writeImage2_data();
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void writeImage2();
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void supportedFormats();
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void readWriteNonDestructive_data();
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void readWriteNonDestructive();
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#if defined QTEST_HAVE_TIFF
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void largeTiff();
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#endif
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void writeToInvalidDevice();
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void supportsOption_data();
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void supportsOption();
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void saveWithNoFormat_data();
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void saveWithNoFormat();
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void resolution_data();
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void resolution();
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void saveToTemporaryFile();
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};
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#ifdef Q_OS_SYMBIAN
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static const QLatin1String prefix(SRCDIR "images/");
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#else
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static const QLatin1String prefix(SRCDIR "/images/");
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#endif
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static void initializePadding(QImage *image)
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{
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int effectiveBytesPerLine = (image->width() * image->depth() + 7) / 8;
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int paddingBytes = image->bytesPerLine() - effectiveBytesPerLine;
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if (paddingBytes == 0)
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return;
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for (int y = 0; y < image->height(); ++y) {
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qMemSet(image->scanLine(y) + effectiveBytesPerLine, 0, paddingBytes);
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}
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}
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// Testing get/set functions
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void tst_QImageWriter::getSetCheck()
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{
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QImageWriter obj1;
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// QIODevice * QImageWriter::device()
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// void QImageWriter::setDevice(QIODevice *)
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QFile *var1 = new QFile;
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obj1.setDevice(var1);
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QCOMPARE((QIODevice *) var1, obj1.device());
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// The class should possibly handle a 0-pointer as a device, since
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// there is a default contructor, so it's "handling" a 0 device by default.
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// For example: QMovie::setDevice(0) works just fine
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obj1.setDevice((QIODevice *)0);
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QCOMPARE((QIODevice *) 0, obj1.device());
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delete var1;
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// int QImageWriter::quality()
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// void QImageWriter::setQuality(int)
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obj1.setQuality(0);
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QCOMPARE(0, obj1.quality());
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obj1.setQuality(INT_MIN);
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QCOMPARE(INT_MIN, obj1.quality());
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obj1.setQuality(INT_MAX);
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QCOMPARE(INT_MAX, obj1.quality());
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// int QImageWriter::compression()
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// void QImageWriter::setCompression(int)
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obj1.setCompression(0);
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QCOMPARE(0, obj1.compression());
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obj1.setCompression(INT_MIN);
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QCOMPARE(INT_MIN, obj1.compression());
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obj1.setCompression(INT_MAX);
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QCOMPARE(INT_MAX, obj1.compression());
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// float QImageWriter::gamma()
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// void QImageWriter::setGamma(float)
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obj1.setGamma(0.0f);
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QCOMPARE(0.0f, obj1.gamma());
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obj1.setGamma(1.1f);
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QCOMPARE(1.1f, obj1.gamma());
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}
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tst_QImageWriter::tst_QImageWriter()
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{
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}
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tst_QImageWriter::~tst_QImageWriter()
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{
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QDir dir(prefix);
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QStringList filesToDelete = dir.entryList(QStringList() << "gen-*" , QDir::NoDotAndDotDot | QDir::Files);
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foreach( QString file, filesToDelete) {
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QFile::remove(dir.absoluteFilePath(file));
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}
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}
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void tst_QImageWriter::init()
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{
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}
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void tst_QImageWriter::cleanup()
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{
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}
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void tst_QImageWriter::writeImage_data()
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{
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QTest::addColumn<QString>("fileName");
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QTest::addColumn<bool>("lossy");
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QTest::addColumn<QByteArray>("format");
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QTest::newRow("BMP: colorful") << QString("colorful.bmp") << false << QByteArray("bmp");
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QTest::newRow("BMP: font") << QString("font.bmp") << false << QByteArray("bmp");
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QTest::newRow("XPM: marble") << QString("marble.xpm") << false << QByteArray("xpm");
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QTest::newRow("PNG: kollada") << QString("kollada.png") << false << QByteArray("png");
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QTest::newRow("PPM: teapot") << QString("teapot.ppm") << false << QByteArray("ppm");
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QTest::newRow("PBM: ship63") << QString("ship63.pbm") << true << QByteArray("pbm");
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QTest::newRow("XBM: gnus") << QString("gnus.xbm") << false << QByteArray("xbm");
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QTest::newRow("JPEG: beavis") << QString("beavis.jpg") << true << QByteArray("jpeg");
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#if defined QTEST_HAVE_TIFF
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QTest::newRow("TIFF: teapot") << QString("teapot.tiff") << false << QByteArray("tiff");
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#endif
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}
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void tst_QImageWriter::writeImage()
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{
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QFETCH(QString, fileName);
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QFETCH(bool, lossy);
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QFETCH(QByteArray, format);
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QImage image;
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{
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QImageReader reader(prefix + fileName);
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image = reader.read();
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QVERIFY2(!image.isNull(), qPrintable(reader.errorString()));
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}
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{
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QImageWriter writer(prefix + "gen-" + fileName, format);
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QVERIFY(writer.write(image));
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}
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{
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// Shouldn't be able to write to read-only file
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QFile sourceFile(prefix + "gen-" + fileName);
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QFile::Permissions permissions = sourceFile.permissions();
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QVERIFY(sourceFile.setPermissions(QFile::ReadOwner | QFile::ReadUser | QFile::ReadGroup | QFile::ReadOther));
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QImageWriter writer(prefix + "gen-" + fileName, format);
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QVERIFY(!writer.write(image));
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QVERIFY(sourceFile.setPermissions(permissions));
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}
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QImage image2;
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{
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QImageReader reader(prefix + "gen-" + fileName);
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image2 = reader.read();
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QVERIFY(!image2.isNull());
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}
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if (!lossy) {
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QCOMPARE(image, image2);
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} else {
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QCOMPARE(image.format(), image2.format());
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QCOMPARE(image.depth(), image2.depth());
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}
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}
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void tst_QImageWriter::writeImage2_data()
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{
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QTest::addColumn<QString>("fileName");
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QTest::addColumn<QByteArray>("format");
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QTest::addColumn<QImage>("image");
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const QStringList formats = QStringList() << "bmp" << "xpm" << "png"
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<< "ppm"; //<< "jpeg";
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QImage image0(70, 70, QImage::Format_ARGB32);
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image0.fill(QColor(Qt::red).rgb());
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QImage::Format imgFormat = QImage::Format_Mono;
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while (imgFormat != QImage::NImageFormats) {
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QImage image = image0.convertToFormat(imgFormat);
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initializePadding(&image);
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foreach (const QString format, formats) {
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const QString fileName = QString("solidcolor_%1.%2").arg(imgFormat)
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.arg(format);
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QTest::newRow(fileName.toLatin1()) << fileName
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<< format.toLatin1()
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<< image;
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}
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imgFormat = QImage::Format(int(imgFormat) + 1);
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}
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}
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#if defined QTEST_HAVE_TIFF
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void tst_QImageWriter::largeTiff()
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{
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#if !defined(Q_OS_WINCE) && !defined(Q_OS_SYMBIAN)
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QImage img(4096, 2048, QImage::Format_ARGB32);
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QPainter p(&img);
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img.fill(0x0);
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p.fillRect(0, 0, 4096, 2048, QBrush(Qt::CrossPattern));
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p.end();
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QByteArray array;
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QBuffer writeBuffer(&array);
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writeBuffer.open(QIODevice::WriteOnly);
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QImageWriter writer(&writeBuffer, "tiff");
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QVERIFY(writer.write(img));
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writeBuffer.close();
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QBuffer readBuffer(&array);
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readBuffer.open(QIODevice::ReadOnly);
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QImageReader reader(&readBuffer, "tiff");
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QImage img2 = reader.read();
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QVERIFY(!img2.isNull());
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QCOMPARE(img, img2);
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#else
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QWARN("not tested on Symbian/WinCE");
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#endif
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}
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#endif
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/*
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Workaround for the equality operator for indexed formats
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(which fails if the colortables are different).
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Images must have the same format and size.
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*/
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static bool equalImageContents(const QImage &image1, const QImage &image2)
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{
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switch (image1.format()) {
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case QImage::Format_Mono:
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case QImage::Format_Indexed8:
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for (int y = 0; y < image1.height(); ++y)
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for (int x = 0; x < image1.width(); ++x)
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if (image1.pixel(x, y) != image2.pixel(x, y))
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return false;
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return true;
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default:
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return (image1 == image2);
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}
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}
|
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void tst_QImageWriter::writeImage2()
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{
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QFETCH(QString, fileName);
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QFETCH(QByteArray, format);
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QFETCH(QImage, image);
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//we reduce the scope of writer so that it closes the associated file
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||
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// and QFile::remove can actually work
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{
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||
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QImageWriter writer(fileName, format);
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QVERIFY(writer.write(image));
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||
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}
|
||
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QImage written;
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||
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|
|
||
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//we reduce the scope of reader so that it closes the associated file
|
||
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// and QFile::remove can actually work
|
||
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{
|
||
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QImageReader reader(fileName, format);
|
||
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QVERIFY(reader.read(&written));
|
||
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}
|
||
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|
||
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written = written.convertToFormat(image.format());
|
||
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if (!equalImageContents(written, image)) {
|
||
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qDebug() << "image" << image.format() << image.width()
|
||
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<< image.height() << image.depth()
|
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<< hex << image.pixel(0, 0);
|
||
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qDebug() << "written" << written.format() << written.width()
|
||
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<< written.height() << written.depth()
|
||
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<< hex << written.pixel(0, 0);
|
||
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}
|
||
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QVERIFY(equalImageContents(written, image));
|
||
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|
|
||
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QVERIFY(QFile::remove(fileName));
|
||
|
|
}
|
||
|
|
|
||
|
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void tst_QImageWriter::supportedFormats()
|
||
|
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{
|
||
|
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QList<QByteArray> formats = QImageWriter::supportedImageFormats();
|
||
|
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QList<QByteArray> sortedFormats = formats;
|
||
|
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qSort(sortedFormats);
|
||
|
|
|
||
|
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// check that the list is sorted
|
||
|
|
QCOMPARE(formats, sortedFormats);
|
||
|
|
|
||
|
|
QSet<QByteArray> formatSet;
|
||
|
|
foreach (QByteArray format, formats)
|
||
|
|
formatSet << format;
|
||
|
|
|
||
|
|
// check that the list does not contain duplicates
|
||
|
|
QCOMPARE(formatSet.size(), formats.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::readWriteNonDestructive_data()
|
||
|
|
{
|
||
|
|
QTest::addColumn<QImage::Format>("format");
|
||
|
|
QTest::addColumn<QImage::Format>("expectedFormat");
|
||
|
|
QTest::addColumn<bool>("grayscale");
|
||
|
|
QTest::newRow("tiff mono") << QImage::Format_Mono << QImage::Format_Mono << false;
|
||
|
|
QTest::newRow("tiff indexed") << QImage::Format_Indexed8 << QImage::Format_Indexed8 << false;
|
||
|
|
QTest::newRow("tiff rgb32") << QImage::Format_ARGB32 << QImage::Format_ARGB32 << false;
|
||
|
|
QTest::newRow("tiff grayscale") << QImage::Format_Indexed8 << QImage::Format_Indexed8 << true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::readWriteNonDestructive()
|
||
|
|
{
|
||
|
|
QFETCH(QImage::Format, format);
|
||
|
|
QFETCH(QImage::Format, expectedFormat);
|
||
|
|
QFETCH(bool, grayscale);
|
||
|
|
QImage image = QImage(prefix + "colorful.bmp").convertToFormat(format);
|
||
|
|
|
||
|
|
if (grayscale) {
|
||
|
|
QVector<QRgb> colors;
|
||
|
|
for (int i = 0; i < 256; ++i)
|
||
|
|
colors << qRgb(i, i, i);
|
||
|
|
image.setColorTable(colors);
|
||
|
|
}
|
||
|
|
|
||
|
|
QVERIFY(image.save(prefix + "gen-readWriteNonDestructive.tiff"));
|
||
|
|
|
||
|
|
QImage image2 = QImage(prefix + "gen-readWriteNonDestructive.tiff");
|
||
|
|
QImage::Format readFormat = image2.format();
|
||
|
|
QCOMPARE(readFormat, expectedFormat);
|
||
|
|
QCOMPARE(image, image2);
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::writeToInvalidDevice()
|
||
|
|
{
|
||
|
|
QLatin1String fileName("/these/directories/do/not/exist/001.png");
|
||
|
|
{
|
||
|
|
QImageWriter writer(fileName);
|
||
|
|
QVERIFY(!writer.canWrite());
|
||
|
|
QCOMPARE(writer.error(), QImageWriter::DeviceError);
|
||
|
|
}
|
||
|
|
{
|
||
|
|
QImageWriter writer(fileName);
|
||
|
|
writer.setFormat("png");
|
||
|
|
QVERIFY(!writer.canWrite());
|
||
|
|
QCOMPARE(writer.error(), QImageWriter::DeviceError);
|
||
|
|
}
|
||
|
|
{
|
||
|
|
QImageWriter writer(fileName);
|
||
|
|
QImage im(10, 10, QImage::Format_ARGB32);
|
||
|
|
QVERIFY(!writer.write(im));
|
||
|
|
QCOMPARE(writer.error(), QImageWriter::DeviceError);
|
||
|
|
}
|
||
|
|
{
|
||
|
|
QImageWriter writer(fileName);
|
||
|
|
writer.setFormat("png");
|
||
|
|
QImage im(10, 10, QImage::Format_ARGB32);
|
||
|
|
QVERIFY(!writer.write(im));
|
||
|
|
QCOMPARE(writer.error(), QImageWriter::DeviceError);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::supportsOption_data()
|
||
|
|
{
|
||
|
|
QTest::addColumn<QString>("fileName");
|
||
|
|
QTest::addColumn<QIntList>("options");
|
||
|
|
|
||
|
|
QTest::newRow("png") << QString("gen-black.png")
|
||
|
|
<< (QIntList() << QImageIOHandler::Gamma
|
||
|
|
<< QImageIOHandler::Description
|
||
|
|
<< QImageIOHandler::Quality
|
||
|
|
<< QImageIOHandler::Size);
|
||
|
|
#if defined QTEST_HAVE_TIFF
|
||
|
|
QTest::newRow("tiff") << QString("gen-black.tiff")
|
||
|
|
<< (QIntList() << QImageIOHandler::Size
|
||
|
|
<< QImageIOHandler::CompressionRatio);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::supportsOption()
|
||
|
|
{
|
||
|
|
QFETCH(QString, fileName);
|
||
|
|
QFETCH(QIntList, options);
|
||
|
|
|
||
|
|
QSet<QImageIOHandler::ImageOption> allOptions;
|
||
|
|
allOptions << QImageIOHandler::Size
|
||
|
|
<< QImageIOHandler::ClipRect
|
||
|
|
<< QImageIOHandler::Description
|
||
|
|
<< QImageIOHandler::ScaledClipRect
|
||
|
|
<< QImageIOHandler::ScaledSize
|
||
|
|
<< QImageIOHandler::CompressionRatio
|
||
|
|
<< QImageIOHandler::Gamma
|
||
|
|
<< QImageIOHandler::Quality
|
||
|
|
<< QImageIOHandler::Name
|
||
|
|
<< QImageIOHandler::SubType
|
||
|
|
<< QImageIOHandler::IncrementalReading
|
||
|
|
<< QImageIOHandler::Endianness
|
||
|
|
<< QImageIOHandler::Animation
|
||
|
|
<< QImageIOHandler::BackgroundColor;
|
||
|
|
|
||
|
|
QImageWriter writer(prefix + fileName);
|
||
|
|
for (int i = 0; i < options.size(); ++i) {
|
||
|
|
QVERIFY(writer.supportsOption(QImageIOHandler::ImageOption(options.at(i))));
|
||
|
|
allOptions.remove(QImageIOHandler::ImageOption(options.at(i)));
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach (QImageIOHandler::ImageOption option, allOptions)
|
||
|
|
QVERIFY(!writer.supportsOption(option));
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::saveWithNoFormat_data()
|
||
|
|
{
|
||
|
|
QTest::addColumn<QString>("fileName");
|
||
|
|
QTest::addColumn<QByteArray>("format");
|
||
|
|
QTest::addColumn<QImageWriter::ImageWriterError>("error");
|
||
|
|
|
||
|
|
QTest::newRow("garble") << prefix + QString("gen-out.garble") << QByteArray("jpeg") << QImageWriter::UnsupportedFormatError;
|
||
|
|
QTest::newRow("bmp") << prefix + QString("gen-out.bmp") << QByteArray("bmp") << QImageWriter::ImageWriterError(0);
|
||
|
|
QTest::newRow("xbm") << prefix + QString("gen-out.xbm") << QByteArray("xbm") << QImageWriter::ImageWriterError(0);
|
||
|
|
QTest::newRow("xpm") << prefix + QString("gen-out.xpm") << QByteArray("xpm") << QImageWriter::ImageWriterError(0);
|
||
|
|
QTest::newRow("png") << prefix + QString("gen-out.png") << QByteArray("png") << QImageWriter::ImageWriterError(0);
|
||
|
|
QTest::newRow("ppm") << prefix + QString("gen-out.ppm") << QByteArray("ppm") << QImageWriter::ImageWriterError(0);
|
||
|
|
QTest::newRow("pbm") << prefix + QString("gen-out.pbm") << QByteArray("pbm") << QImageWriter::ImageWriterError(0);
|
||
|
|
#if defined QTEST_HAVE_TIFF
|
||
|
|
QTest::newRow("tiff") << prefix + QString("gen-out.tiff") << QByteArray("tiff") << QImageWriter::ImageWriterError(0);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::saveWithNoFormat()
|
||
|
|
{
|
||
|
|
QFETCH(QString, fileName);
|
||
|
|
QFETCH(QByteArray, format);
|
||
|
|
QFETCH(QImageWriter::ImageWriterError, error);
|
||
|
|
|
||
|
|
QImage niceImage(64, 64, QImage::Format_ARGB32);
|
||
|
|
qMemSet(niceImage.bits(), 0, niceImage.byteCount());
|
||
|
|
|
||
|
|
QImageWriter writer(fileName /* , 0 - no format! */);
|
||
|
|
if (error != 0) {
|
||
|
|
QVERIFY(!writer.write(niceImage));
|
||
|
|
QCOMPARE(writer.error(), error);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
QVERIFY2(writer.write(niceImage), qPrintable(writer.errorString()));
|
||
|
|
|
||
|
|
QImageReader reader(fileName);
|
||
|
|
QCOMPARE(reader.format(), format);
|
||
|
|
|
||
|
|
QVERIFY(reader.canRead());
|
||
|
|
|
||
|
|
QImage outImage = reader.read();
|
||
|
|
QVERIFY2(!outImage.isNull(), qPrintable(reader.errorString()));
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::resolution_data()
|
||
|
|
{
|
||
|
|
QTest::addColumn<QString>("filename");
|
||
|
|
QTest::addColumn<int>("expectedDotsPerMeterX");
|
||
|
|
QTest::addColumn<int>("expectedDotsPerMeterY");
|
||
|
|
#if defined QTEST_HAVE_TIFF
|
||
|
|
QTest::newRow("TIFF: 100 dpi") << ("image_100dpi.tif") << qRound(100 * (100 / 2.54)) << qRound(100 * (100 / 2.54));
|
||
|
|
QTest::newRow("TIFF: 50 dpi") << ("image_50dpi.tif") << qRound(50 * (100 / 2.54)) << qRound(50 * (100 / 2.54));
|
||
|
|
QTest::newRow("TIFF: 300 dot per meter") << ("image_300dpm.tif") << 300 << 300;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::resolution()
|
||
|
|
{
|
||
|
|
QFETCH(QString, filename);
|
||
|
|
QFETCH(int, expectedDotsPerMeterX);
|
||
|
|
QFETCH(int, expectedDotsPerMeterY);
|
||
|
|
|
||
|
|
QImage image(prefix + QLatin1String("colorful.bmp"));
|
||
|
|
image.setDotsPerMeterX(expectedDotsPerMeterX);
|
||
|
|
image.setDotsPerMeterY(expectedDotsPerMeterY);
|
||
|
|
const QString generatedFilepath = prefix + "gen-" + filename;
|
||
|
|
{
|
||
|
|
QImageWriter writer(generatedFilepath);
|
||
|
|
QVERIFY(writer.write(image));
|
||
|
|
}
|
||
|
|
QImageReader reader(generatedFilepath);
|
||
|
|
const QImage generatedImage = reader.read();
|
||
|
|
|
||
|
|
QCOMPARE(expectedDotsPerMeterX, generatedImage.dotsPerMeterX());
|
||
|
|
QCOMPARE(expectedDotsPerMeterY, generatedImage.dotsPerMeterY());
|
||
|
|
}
|
||
|
|
|
||
|
|
void tst_QImageWriter::saveToTemporaryFile()
|
||
|
|
{
|
||
|
|
QImage image(prefix + "kollada.png");
|
||
|
|
QVERIFY(!image.isNull());
|
||
|
|
|
||
|
|
{
|
||
|
|
// 1) Via QImageWriter's API, with a standard temp file name
|
||
|
|
QTemporaryFile file;
|
||
|
|
QVERIFY(file.open());
|
||
|
|
QImageWriter writer(&file, "PNG");
|
||
|
|
if (writer.canWrite())
|
||
|
|
QVERIFY(writer.write(image));
|
||
|
|
else
|
||
|
|
qWarning() << file.errorString();
|
||
|
|
#if defined(Q_OS_WINCE)
|
||
|
|
file.reset();
|
||
|
|
#endif
|
||
|
|
QCOMPARE(QImage(writer.fileName()), image);
|
||
|
|
}
|
||
|
|
{
|
||
|
|
// 2) Via QImage's API, with a standard temp file name
|
||
|
|
QTemporaryFile file;
|
||
|
|
QVERIFY(file.open());
|
||
|
|
QVERIFY(image.save(&file, "PNG"));
|
||
|
|
file.reset();
|
||
|
|
QImage tmp;
|
||
|
|
QVERIFY(tmp.load(&file, "PNG"));
|
||
|
|
QCOMPARE(tmp, image);
|
||
|
|
}
|
||
|
|
{
|
||
|
|
// 3) Via QImageWriter's API, with a named temp file
|
||
|
|
QTemporaryFile file("tempXXXXXX");
|
||
|
|
QVERIFY(file.open());
|
||
|
|
QImageWriter writer(&file, "PNG");
|
||
|
|
QVERIFY(writer.write(image));
|
||
|
|
#if defined(Q_OS_WINCE)
|
||
|
|
file.reset();
|
||
|
|
#endif
|
||
|
|
QCOMPARE(QImage(writer.fileName()), image);
|
||
|
|
}
|
||
|
|
{
|
||
|
|
// 4) Via QImage's API, with a named temp file
|
||
|
|
QTemporaryFile file("tempXXXXXX");
|
||
|
|
QVERIFY(file.open());
|
||
|
|
QVERIFY(image.save(&file, "PNG"));
|
||
|
|
file.reset();
|
||
|
|
QImage tmp;
|
||
|
|
QVERIFY(tmp.load(&file, "PNG"));
|
||
|
|
QCOMPARE(tmp, image);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
QTEST_MAIN(tst_QImageWriter)
|
||
|
|
#include "tst_qimagewriter.moc"
|