qt5base-lts/tests/auto/qimagewriter/tst_qimagewriter.cpp

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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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**
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**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QDebug>
#include <QFile>
#include <QImage>
#include <QImageReader>
#include <QImageWriter>
#include <QLabel>
#include <QPainter>
#include <QSet>
#if defined(Q_OS_SYMBIAN)
# define SRCDIR ""
#endif
typedef QMap<QString, QString> QStringMap;
typedef QList<int> QIntList;
Q_DECLARE_METATYPE(QImage)
Q_DECLARE_METATYPE(QStringMap)
Q_DECLARE_METATYPE(QIntList)
Q_DECLARE_METATYPE(QImageWriter::ImageWriterError)
Q_DECLARE_METATYPE(QIODevice *)
Q_DECLARE_METATYPE(QImage::Format)
//TESTED_FILES=
class tst_QImageWriter : public QObject
{
Q_OBJECT
public:
tst_QImageWriter();
virtual ~tst_QImageWriter();
public slots:
void init();
void cleanup();
private slots:
void getSetCheck();
void writeImage_data();
void writeImage();
void writeImage2_data();
void writeImage2();
void supportedFormats();
void readWriteNonDestructive_data();
void readWriteNonDestructive();
#if defined QTEST_HAVE_TIFF
void largeTiff();
#endif
void writeToInvalidDevice();
void supportsOption_data();
void supportsOption();
void saveWithNoFormat_data();
void saveWithNoFormat();
void resolution_data();
void resolution();
void saveToTemporaryFile();
};
#ifdef Q_OS_SYMBIAN
static const QLatin1String prefix(SRCDIR "images/");
#else
static const QLatin1String prefix(SRCDIR "/images/");
#endif
static void initializePadding(QImage *image)
{
int effectiveBytesPerLine = (image->width() * image->depth() + 7) / 8;
int paddingBytes = image->bytesPerLine() - effectiveBytesPerLine;
if (paddingBytes == 0)
return;
for (int y = 0; y < image->height(); ++y) {
qMemSet(image->scanLine(y) + effectiveBytesPerLine, 0, paddingBytes);
}
}
// Testing get/set functions
void tst_QImageWriter::getSetCheck()
{
QImageWriter obj1;
// QIODevice * QImageWriter::device()
// void QImageWriter::setDevice(QIODevice *)
QFile *var1 = new QFile;
obj1.setDevice(var1);
QCOMPARE((QIODevice *) var1, obj1.device());
// The class should possibly handle a 0-pointer as a device, since
// there is a default contructor, so it's "handling" a 0 device by default.
// For example: QMovie::setDevice(0) works just fine
obj1.setDevice((QIODevice *)0);
QCOMPARE((QIODevice *) 0, obj1.device());
delete var1;
// int QImageWriter::quality()
// void QImageWriter::setQuality(int)
obj1.setQuality(0);
QCOMPARE(0, obj1.quality());
obj1.setQuality(INT_MIN);
QCOMPARE(INT_MIN, obj1.quality());
obj1.setQuality(INT_MAX);
QCOMPARE(INT_MAX, obj1.quality());
// int QImageWriter::compression()
// void QImageWriter::setCompression(int)
obj1.setCompression(0);
QCOMPARE(0, obj1.compression());
obj1.setCompression(INT_MIN);
QCOMPARE(INT_MIN, obj1.compression());
obj1.setCompression(INT_MAX);
QCOMPARE(INT_MAX, obj1.compression());
// float QImageWriter::gamma()
// void QImageWriter::setGamma(float)
obj1.setGamma(0.0f);
QCOMPARE(0.0f, obj1.gamma());
obj1.setGamma(1.1f);
QCOMPARE(1.1f, obj1.gamma());
}
tst_QImageWriter::tst_QImageWriter()
{
}
tst_QImageWriter::~tst_QImageWriter()
{
QDir dir(prefix);
QStringList filesToDelete = dir.entryList(QStringList() << "gen-*" , QDir::NoDotAndDotDot | QDir::Files);
foreach( QString file, filesToDelete) {
QFile::remove(dir.absoluteFilePath(file));
}
}
void tst_QImageWriter::init()
{
}
void tst_QImageWriter::cleanup()
{
}
void tst_QImageWriter::writeImage_data()
{
QTest::addColumn<QString>("fileName");
QTest::addColumn<bool>("lossy");
QTest::addColumn<QByteArray>("format");
QTest::newRow("BMP: colorful") << QString("colorful.bmp") << false << QByteArray("bmp");
QTest::newRow("BMP: font") << QString("font.bmp") << false << QByteArray("bmp");
QTest::newRow("XPM: marble") << QString("marble.xpm") << false << QByteArray("xpm");
QTest::newRow("PNG: kollada") << QString("kollada.png") << false << QByteArray("png");
QTest::newRow("PPM: teapot") << QString("teapot.ppm") << false << QByteArray("ppm");
QTest::newRow("PBM: ship63") << QString("ship63.pbm") << true << QByteArray("pbm");
QTest::newRow("XBM: gnus") << QString("gnus.xbm") << false << QByteArray("xbm");
QTest::newRow("JPEG: beavis") << QString("beavis.jpg") << true << QByteArray("jpeg");
#if defined QTEST_HAVE_TIFF
QTest::newRow("TIFF: teapot") << QString("teapot.tiff") << false << QByteArray("tiff");
#endif
}
void tst_QImageWriter::writeImage()
{
QFETCH(QString, fileName);
QFETCH(bool, lossy);
QFETCH(QByteArray, format);
QImage image;
{
QImageReader reader(prefix + fileName);
image = reader.read();
QVERIFY2(!image.isNull(), qPrintable(reader.errorString()));
}
{
QImageWriter writer(prefix + "gen-" + fileName, format);
QVERIFY(writer.write(image));
}
{
// Shouldn't be able to write to read-only file
QFile sourceFile(prefix + "gen-" + fileName);
QFile::Permissions permissions = sourceFile.permissions();
QVERIFY(sourceFile.setPermissions(QFile::ReadOwner | QFile::ReadUser | QFile::ReadGroup | QFile::ReadOther));
QImageWriter writer(prefix + "gen-" + fileName, format);
QVERIFY(!writer.write(image));
QVERIFY(sourceFile.setPermissions(permissions));
}
QImage image2;
{
QImageReader reader(prefix + "gen-" + fileName);
image2 = reader.read();
QVERIFY(!image2.isNull());
}
if (!lossy) {
QCOMPARE(image, image2);
} else {
QCOMPARE(image.format(), image2.format());
QCOMPARE(image.depth(), image2.depth());
}
}
void tst_QImageWriter::writeImage2_data()
{
QTest::addColumn<QString>("fileName");
QTest::addColumn<QByteArray>("format");
QTest::addColumn<QImage>("image");
const QStringList formats = QStringList() << "bmp" << "xpm" << "png"
<< "ppm"; //<< "jpeg";
QImage image0(70, 70, QImage::Format_ARGB32);
image0.fill(QColor(Qt::red).rgb());
QImage::Format imgFormat = QImage::Format_Mono;
while (imgFormat != QImage::NImageFormats) {
QImage image = image0.convertToFormat(imgFormat);
initializePadding(&image);
foreach (const QString format, formats) {
const QString fileName = QString("solidcolor_%1.%2").arg(imgFormat)
.arg(format);
QTest::newRow(fileName.toLatin1()) << fileName
<< format.toLatin1()
<< image;
}
imgFormat = QImage::Format(int(imgFormat) + 1);
}
}
#if defined QTEST_HAVE_TIFF
void tst_QImageWriter::largeTiff()
{
#if !defined(Q_OS_WINCE) && !defined(Q_OS_SYMBIAN)
QImage img(4096, 2048, QImage::Format_ARGB32);
QPainter p(&img);
img.fill(0x0);
p.fillRect(0, 0, 4096, 2048, QBrush(Qt::CrossPattern));
p.end();
QByteArray array;
QBuffer writeBuffer(&array);
writeBuffer.open(QIODevice::WriteOnly);
QImageWriter writer(&writeBuffer, "tiff");
QVERIFY(writer.write(img));
writeBuffer.close();
QBuffer readBuffer(&array);
readBuffer.open(QIODevice::ReadOnly);
QImageReader reader(&readBuffer, "tiff");
QImage img2 = reader.read();
QVERIFY(!img2.isNull());
QCOMPARE(img, img2);
#else
QWARN("not tested on Symbian/WinCE");
#endif
}
#endif
/*
Workaround for the equality operator for indexed formats
(which fails if the colortables are different).
Images must have the same format and size.
*/
static bool equalImageContents(const QImage &image1, const QImage &image2)
{
switch (image1.format()) {
case QImage::Format_Mono:
case QImage::Format_Indexed8:
for (int y = 0; y < image1.height(); ++y)
for (int x = 0; x < image1.width(); ++x)
if (image1.pixel(x, y) != image2.pixel(x, y))
return false;
return true;
default:
return (image1 == image2);
}
}
void tst_QImageWriter::writeImage2()
{
QFETCH(QString, fileName);
QFETCH(QByteArray, format);
QFETCH(QImage, image);
//we reduce the scope of writer so that it closes the associated file
// and QFile::remove can actually work
{
QImageWriter writer(fileName, format);
QVERIFY(writer.write(image));
}
QImage written;
//we reduce the scope of reader so that it closes the associated file
// and QFile::remove can actually work
{
QImageReader reader(fileName, format);
QVERIFY(reader.read(&written));
}
written = written.convertToFormat(image.format());
if (!equalImageContents(written, image)) {
qDebug() << "image" << image.format() << image.width()
<< image.height() << image.depth()
<< hex << image.pixel(0, 0);
qDebug() << "written" << written.format() << written.width()
<< written.height() << written.depth()
<< hex << written.pixel(0, 0);
}
QVERIFY(equalImageContents(written, image));
QVERIFY(QFile::remove(fileName));
}
void tst_QImageWriter::supportedFormats()
{
QList<QByteArray> formats = QImageWriter::supportedImageFormats();
QList<QByteArray> sortedFormats = formats;
qSort(sortedFormats);
// 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"