// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <qtest.h>
#include <QTextDocument>
#include <QTcpServer>
#include <QTcpSocket>
#include <QDir>

#include <QtQml/qqmlengine.h>
#include <QtQml/qqmlcomponent.h>
#include <QtQuick/qquickview.h>
#include <private/qquickimage_p.h>
#include <private/qquickimagebase_p.h>
#include <private/qquickloader_p.h>
#include <QtQml/qqmlcontext.h>
#include <QtQml/qqmlexpression.h>
#include <QtTest/QSignalSpy>
#include <QtGui/QPainter>
#include <QtGui/QImageReader>
#include <QQuickWindow>
#include <QQuickView>
#include <QQuickImageProvider>
#include <QQmlAbstractUrlInterceptor>

#include <QtQuickTestUtils/private/qmlutils_p.h>
#include <QtQuickTestUtils/private/testhttpserver_p.h>
#include <QtQuickTestUtils/private/viewtestutils_p.h>
#include <QtQuickTestUtils/private/visualtestutils_p.h>

// #define DEBUG_WRITE_OUTPUT

Q_LOGGING_CATEGORY(lcTests, "qt.quick.tests")

using namespace QQuickVisualTestUtils;

Q_DECLARE_METATYPE(QQuickImageBase::Status)

class tst_qquickimage : public QQmlDataTest
{
    Q_OBJECT
public:
    tst_qquickimage();

private slots:
    void initTestCase() override;
    void cleanup();
    void noSource();
    void imageSource();
    void imageSource_data();
    void clearSource();
    void resized();
    void preserveAspectRatio();
    void smooth();
    void mirror();
    void svg();
    void svg_data();
    void geometry();
    void geometry_data();
    void big();
    void tiling_QTBUG_6716();
    void tiling_QTBUG_6716_data();
    void noLoading();
    void paintedWidthHeight();
    void sourceSize_QTBUG_14303();
    void sourceSize_QTBUG_16389();
    void nullPixmapPaint();
    void imageCrash_QTBUG_22125();
    void imageCrash_QTBUG_32513();
    void sourceSize_data();
    void sourceSize();
    void sourceClipRect_data();
    void sourceClipRect();
    void progressAndStatusChanges();
    void progressAndChangeSignalOrder();
    void sourceSizeChanges();
    void correctStatus();
    void highdpi();
    void highDpiFillModesAndSizes_data();
    void highDpiFillModesAndSizes();
    void hugeImages();
    void urlInterceptor();
    void multiFrame_data();
    void multiFrame();
    void colorSpace();

private:
    QQmlEngine engine;
    QSGRendererInterface::GraphicsApi graphicsApi = QSGRendererInterface::Unknown;
};

tst_qquickimage::tst_qquickimage()
    : QQmlDataTest(QT_QMLTEST_DATADIR)
{
}

void tst_qquickimage::initTestCase()
{
    QQmlDataTest::initTestCase();
    QScopedPointer<QQuickView> window(new QQuickView(0));
    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));
    graphicsApi = window->rendererInterface()->graphicsApi();
}

void tst_qquickimage::cleanup()
{
    QQuickWindow window;
    window.releaseResources();
    engine.clearComponentCache();
}

void tst_qquickimage::noSource()
{
    QString componentStr = "import QtQuick 2.0\nImage { source: \"\" }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->source(), QUrl());
    QCOMPARE(obj->status(), QQuickImage::Null);
    QCOMPARE(obj->width(), 0.);
    QCOMPARE(obj->height(), 0.);
    QCOMPARE(obj->fillMode(), QQuickImage::Stretch);
    QCOMPARE(obj->progress(), 0.0);

    delete obj;
}

void tst_qquickimage::imageSource_data()
{
    QTest::addColumn<QString>("source");
    QTest::addColumn<double>("width");
    QTest::addColumn<double>("height");
    QTest::addColumn<bool>("remote");
    QTest::addColumn<bool>("async");
    QTest::addColumn<bool>("cache");
    QTest::addColumn<QString>("error");
    QTest::addColumn<bool>("retainWhileLoading");

    QTest::newRow("local") << testFileUrl("colors.png").toString() << 120.0 << 120.0 << false << false << true << "" << false;
    QTest::newRow("local no cache") << testFileUrl("colors.png").toString() << 120.0 << 120.0 << false << false << false << "" << false;
    QTest::newRow("local async") << testFileUrl("colors1.png").toString() << 120.0 << 120.0 << false << true << true << "" << false;
    QTest::newRow("local async retain") << testFileUrl("colors1.png").toString() << 120.0 << 120.0 << false << true << true << "" << true;
    QTest::newRow("local not found") << testFileUrl("no-such-file.png").toString() << 0.0 << 0.0 << false
        << false << true << "<Unknown File>:2:1: QML Image: Cannot open: " + testFileUrl("no-such-file.png").toString() << false;
    QTest::newRow("local async not found") << testFileUrl("no-such-file-1.png").toString() << 0.0 << 0.0 << false
        << true << true << "<Unknown File>:2:1: QML Image: Cannot open: " + testFileUrl("no-such-file-1.png").toString() << false;
    QTest::newRow("local async retain not found") << testFileUrl("no-such-file-1.png").toString() << 0.0 << 0.0 << false
                                           << true << true << "<Unknown File>:2:1: QML Image: Cannot open: " + testFileUrl("no-such-file-1.png").toString() << true;
    QTest::newRow("remote") << "/colors.png" << 120.0 << 120.0 << true << false << true << "" << false;
    QTest::newRow("remote retain") << "/colors.png" << 120.0 << 120.0 << true << false << true << "" << true;
    QTest::newRow("remote redirected") << "/oldcolors.png" << 120.0 << 120.0 << true << false << false << "" << false;
    if (QImageReader::supportedImageFormats().contains("svg"))
        QTest::newRow("remote svg") << "/heart.svg" << 595.0 << 841.0 << true << false << false << "" << false;
    if (QImageReader::supportedImageFormats().contains("svgz"))
        QTest::newRow("remote svgz") << "/heart.svgz" << 595.0 << 841.0 << true << false << false << "" << false;
    if (graphicsApi != QSGRendererInterface::Software) {
        QTest::newRow("texturefile pkm format") << testFileUrl("logo.pkm").toString() << 256.0 << 256.0 << false << false << true << "" << false;
        QTest::newRow("texturefile ktx format") << testFileUrl("car.ktx").toString() << 146.0 << 80.0 << false << false << true << "" << false;
        QTest::newRow("texturefile async") << testFileUrl("logo.pkm").toString() << 256.0 << 256.0 << false << true << true << "" << false;
        QTest::newRow("texturefile async retain") << testFileUrl("logo.pkm").toString() << 256.0 << 256.0 << false << true << true << "" << true;
        QTest::newRow("texturefile remote") << "/logo.pkm" << 256.0 << 256.0 << true << false << true << "" << false;
        QTest::newRow("texturefile remote retain") << "/logo.pkm" << 256.0 << 256.0 << true << false << true << "" << true;
    }
    QTest::newRow("remote not found") << "/no-such-file.png" << 0.0 << 0.0 << true
        << false << true << "<Unknown File>:2:1: QML Image: Error transferring {{ServerBaseUrl}}/no-such-file.png - server replied: Not found" << false;
    QTest::newRow("extless") << testFileUrl("colors").toString() << 120.0 << 120.0 << false << false << true << "" << false;
    QTest::newRow("extless no cache") << testFileUrl("colors").toString() << 120.0 << 120.0 << false << false << false << "" << false;
    QTest::newRow("extless async") << testFileUrl("colors1").toString() << 120.0 << 120.0 << false << true << true << "" << false;
    QTest::newRow("extless async retain") << testFileUrl("colors1").toString() << 120.0 << 120.0 << false << true << true << "" << true;
    QTest::newRow("extless not found") << testFileUrl("no-such-file").toString() << 0.0 << 0.0 << false
        << false << true << "<Unknown File>:2:1: QML Image: Cannot open: " + testFileUrl("no-such-file").toString() << false;
    // Test that texture file is preferred over image file, when supported.
    // Since pattern.pkm has different size than pattern.png, these tests verify that the right file has been loaded
    if (graphicsApi != QSGRendererInterface::Software) {
        QTest::newRow("extless prefer-tex") << testFileUrl("pattern").toString() << 64.0 << 64.0 << false << false << true << "" << false;
        QTest::newRow("extless prefer-tex async") << testFileUrl("pattern").toString() << 64.0 << 64.0 << false << true << true << "" << false;
    } else {
        QTest::newRow("extless ignore-tex") << testFileUrl("pattern").toString() << 200.0 << 200.0 << false << false << true << "" << false;
        QTest::newRow("extless ignore-tex async") << testFileUrl("pattern").toString() << 200.0 << 200.0 << false << true << true << "" << false;
    }

}

void tst_qquickimage::imageSource()
{
    QFETCH(QString, source);
    QFETCH(double, width);
    QFETCH(double, height);
    QFETCH(bool, remote);
    QFETCH(bool, async);
    QFETCH(bool, cache);
    QFETCH(QString, error);
    QFETCH(bool, retainWhileLoading);

#if !QT_CONFIG(qml_network)
    if (remote)
        QSKIP("Skipping due to lack of QML network feature");
#endif

    TestHTTPServer server;
    if (remote) {
        QVERIFY2(server.listen(), qPrintable(server.errorString()));
        server.serveDirectory(dataDirectory());
        server.addRedirect("oldcolors.png", server.urlString("/colors.png"));
        source = server.urlString(source);
        error.replace(QStringLiteral("{{ServerBaseUrl}}"), server.baseUrl().toString());
    }

    if (!error.isEmpty())
        QTest::ignoreMessage(QtWarningMsg, error.toUtf8());

    QString componentStr = "import QtQuick\nImage { source: \"" + source + "\"; asynchronous: "
        + (async ? QLatin1String("true") : QLatin1String("false")) + "; cache: "
        + (cache ? QLatin1String("true") : QLatin1String("false")) + "; retainWhileLoading: "
                           + (retainWhileLoading ? QLatin1String("true") : QLatin1String("false")) + " }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);

    if (async)
        QVERIFY(obj->asynchronous());
    else
        QVERIFY(!obj->asynchronous());

    QCOMPARE(obj->retainWhileLoading(), retainWhileLoading);

    if (cache)
        QVERIFY(obj->cache());
    else
        QVERIFY(!obj->cache());

    if (remote || async)
        QTRY_COMPARE(obj->status(), QQuickImage::Loading);

    QCOMPARE(obj->source(), QUrl(source));

    if (error.isEmpty()) {
        QTRY_COMPARE(obj->status(), QQuickImage::Ready);
        QCOMPARE(obj->width(), qreal(width));
        QCOMPARE(obj->height(), qreal(height));
        QCOMPARE(obj->fillMode(), QQuickImage::Stretch);
        QCOMPARE(obj->progress(), 1.0);
    } else {
        QTRY_COMPARE(obj->status(), QQuickImage::Error);
    }

    delete obj;
}

void tst_qquickimage::clearSource()
{
    QString componentStr = "import QtQuick 2.0\nImage { source: srcImage }";
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty("srcImage", testFileUrl("colors.png"));
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->status(), QQuickImage::Ready);
    QCOMPARE(obj->width(), 120.);
    QCOMPARE(obj->height(), 120.);
    QCOMPARE(obj->progress(), 1.0);

    ctxt->setContextProperty("srcImage", "");
    QVERIFY(obj->source().isEmpty());
    QCOMPARE(obj->status(), QQuickImage::Null);
    QCOMPARE(obj->width(), 0.);
    QCOMPARE(obj->height(), 0.);
    QCOMPARE(obj->progress(), 0.0);

    delete obj;
}

void tst_qquickimage::resized()
{
    QString componentStr = "import QtQuick 2.0\nImage { source: \"" + testFile("colors.png") + "\"; width: 300; height: 300 }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->width(), 300.);
    QCOMPARE(obj->height(), 300.);
    QCOMPARE(obj->fillMode(), QQuickImage::Stretch);
    delete obj;
}


void tst_qquickimage::preserveAspectRatio()
{
    QScopedPointer<QQuickView> window(new QQuickView(nullptr));
    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));

    window->setSource(testFileUrl("aspectratio.qml"));
    QQuickImage *image = qobject_cast<QQuickImage*>(window->rootObject());
    QVERIFY(image != nullptr);
    image->setWidth(80.0);
    QCOMPARE(image->width(), 80.);
    QCOMPARE(image->height(), 80.);

    window->setSource(testFileUrl("aspectratio.qml"));
    image = qobject_cast<QQuickImage*>(window->rootObject());
    image->setHeight(60.0);
    QVERIFY(image != nullptr);
    QCOMPARE(image->height(), 60.);
    QCOMPARE(image->width(), 60.);
}

void tst_qquickimage::smooth()
{
    QString componentStr = "import QtQuick 2.0\nImage { source: \"" + testFile("colors.png") + "\"; smooth: true; width: 300; height: 300 }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->width(), 300.);
    QCOMPARE(obj->height(), 300.);
    QCOMPARE(obj->smooth(), true);
    QCOMPARE(obj->fillMode(), QQuickImage::Stretch);

    delete obj;
}

void tst_qquickimage::mirror()
{
    SKIP_IF_NO_WINDOW_GRAB;

    QMap<QQuickImage::FillMode, QImage> screenshots;
    const QList<QQuickImage::FillMode> fillModes{QQuickImage::Stretch,
                                                 QQuickImage::PreserveAspectFit,
                                                 QQuickImage::PreserveAspectCrop,
                                                 QQuickImage::Tile,
                                                 QQuickImage::TileVertically,
                                                 QQuickImage::TileHorizontally,
                                                 QQuickImage::Pad};

    qreal width = 300;
    qreal height = 250;
    qreal devicePixelRatio = 1.0;

    for (QQuickImage::FillMode fillMode : fillModes) {
        QScopedPointer<QQuickView> window(new QQuickView);
        window->setSource(testFileUrl("mirror.qml"));

        QQuickImage *obj = window->rootObject()->findChild<QQuickImage*>("image");
        QVERIFY(obj != nullptr);

        obj->setFillMode(fillMode);
        obj->setProperty("mirror", true);
        window->showNormal();
        QVERIFY(QTest::qWaitForWindowExposed(window.data()));

        QImage screenshot = window->grabWindow();
        screenshots[fillMode] = screenshot;
        devicePixelRatio = window->devicePixelRatio();
    }

    for (QQuickImage::FillMode fillMode : fillModes) {
        QPixmap srcPixmap;
        QVERIFY(srcPixmap.load(testFile("pattern.png")));

        QPixmap expected(width * (int)devicePixelRatio, height * (int)devicePixelRatio);
        expected.setDevicePixelRatio(devicePixelRatio);
        expected.fill();
        QPainter p_e(&expected);
        QTransform transform;
        transform.translate(width, 0).scale(-1, 1.0);
        p_e.setTransform(transform);

        QPoint offset(width / 2 - srcPixmap.width() / 2, height / 2 - srcPixmap.height() / 2);

        switch (fillMode) {
        case QQuickImage::Stretch:
            p_e.drawPixmap(QRect(0, 0, width, height), srcPixmap, QRect(0, 0, srcPixmap.width(), srcPixmap.height()));
            break;
        case QQuickImage::PreserveAspectFit:
            p_e.drawPixmap(QRect(25, 0, height, height), srcPixmap, QRect(0, 0, srcPixmap.width(), srcPixmap.height()));
            break;
        case QQuickImage::PreserveAspectCrop:
        {
            qreal ratio = width/srcPixmap.width(); // width is the longer side
            QRect rect(0, 0, srcPixmap.width()*ratio, srcPixmap.height()*ratio);
            rect.moveCenter(QRect(0, 0, width, height).center());
            p_e.drawPixmap(rect, srcPixmap, QRect(0, 0, srcPixmap.width(), srcPixmap.height()));
            break;
        }
        case QQuickImage::Tile:
            p_e.drawTiledPixmap(QRect(0, 0, width, height), srcPixmap, -offset);
            break;
        case QQuickImage::TileVertically:
            transform.scale(width / srcPixmap.width(), 1.0);
            p_e.setTransform(transform);
            p_e.drawTiledPixmap(QRect(0, 0, width, height), srcPixmap, QPoint(0, -offset.y()));
            break;
        case QQuickImage::TileHorizontally:
            transform.scale(1.0, height / srcPixmap.height());
            p_e.setTransform(transform);
            p_e.drawTiledPixmap(QRect(0, 0, width, height), srcPixmap, QPoint(-offset.x(), 0));
            break;
        case QQuickImage::Pad:
            p_e.drawPixmap(offset, srcPixmap);
            break;
        }

        QImage img = expected.toImage();
        QCOMPARE(screenshots[fillMode].convertToFormat(img.format()), img);
    }
}

void tst_qquickimage::svg_data()
{
    QTest::addColumn<QString>("src");
    QTest::addColumn<QByteArray>("format");

    QTest::newRow("svg") << testFileUrl("heart.svg").toString() << QByteArray("svg");
    QTest::newRow("svgz") << testFileUrl("heart.svgz").toString() << QByteArray("svgz");
}

void tst_qquickimage::svg()
{
    QFETCH(QString, src);
    QFETCH(QByteArray, format);
    if (!QImageReader::supportedImageFormats().contains(format))
        QSKIP("svg support not available");

    QString componentStr = "import QtQuick 2.0\nImage { source: \"" + src + "\"; sourceSize.width: 300; sourceSize.height: 300 }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->width(), 300.0);
    QCOMPARE(obj->height(), 300.0);
    obj->setSourceSize(QSize(200,200));

    QCOMPARE(obj->width(), 200.0);
    QCOMPARE(obj->height(), 200.0);
    obj->setSourceSize(QSize(100,0));
    QCOMPARE(obj->width(), 100.0);
    // Due to aspect ratio calculations we can't get a precise
    // check for all setups, so we allow a small margin of error
    QVERIFY(qAbs(obj->height() - 141) < 1);

    // Setting it to a size bigger than the actual file, SVG formats
    // can scale up although other image formats cannot
    obj->setSourceSize(QSize(800,0));
    QCOMPARE(obj->width(), 800.0);
    QVERIFY(qAbs(obj->height() - 1131) < 1);
    delete obj;
}

void tst_qquickimage::geometry_data()
{
    QTest::addColumn<QString>("fillMode");
    QTest::addColumn<bool>("explicitWidth");
    QTest::addColumn<bool>("explicitHeight");
    QTest::addColumn<double>("itemWidth");
    QTest::addColumn<double>("paintedWidth");
    QTest::addColumn<double>("boundingWidth");
    QTest::addColumn<double>("itemHeight");
    QTest::addColumn<double>("paintedHeight");
    QTest::addColumn<double>("boundingHeight");

    // tested image has width 200, height 100

    // bounding rect and item rect are equal with fillMode PreserveAspectFit, painted rect may be smaller if the aspect ratio doesn't match
    QTest::newRow("PreserveAspectFit") << "PreserveAspectFit" << false << false << 200.0 << 200.0 << 200.0 << 100.0 << 100.0 << 100.0;
    QTest::newRow("PreserveAspectFit explicit width 300") << "PreserveAspectFit" << true << false << 300.0 << 200.0 << 300.0 << 100.0 << 100.0 << 100.0;
    QTest::newRow("PreserveAspectFit explicit height 400") << "PreserveAspectFit" << false << true << 200.0 << 200.0 << 200.0 << 400.0 << 100.0 << 400.0;
    QTest::newRow("PreserveAspectFit explicit width 300, height 400") << "PreserveAspectFit" << true << true << 300.0 << 300.0 << 300.0 << 400.0 << 150.0 << 400.0;

    // bounding rect and painted rect are equal with fillMode PreserveAspectCrop, item rect may be smaller if the aspect ratio doesn't match
    QTest::newRow("PreserveAspectCrop") << "PreserveAspectCrop" << false << false << 200.0 << 200.0 << 200.0 << 100.0 << 100.0 << 100.0;
    QTest::newRow("PreserveAspectCrop explicit width 300") << "PreserveAspectCrop" << true << false << 300.0 << 300.0 << 300.0 << 100.0 << 150.0 << 150.0;
    QTest::newRow("PreserveAspectCrop explicit height 400") << "PreserveAspectCrop" << false << true << 200.0 << 800.0 << 800.0 << 400.0 << 400.0 << 400.0;
    QTest::newRow("PreserveAspectCrop explicit width 300, height 400") << "PreserveAspectCrop" << true << true << 300.0 << 800.0 << 800.0 << 400.0 << 400.0 << 400.0;

    // bounding rect, painted rect and item rect are equal in stretching and tiling images
    QStringList fillModes{"Stretch", "Tile", "TileVertically", "TileHorizontally"};
    for (const auto &fillMode : fillModes) {
        QTest::newRow(fillMode.toLatin1()) << fillMode << false << false << 200.0 << 200.0 << 200.0 << 100.0 << 100.0 << 100.0;
        QTest::newRow(QString(fillMode + " explicit width 300").toLatin1()) << fillMode << true << false << 300.0 << 300.0 << 300.0 << 100.0 << 100.0 << 100.0;
        QTest::newRow(QString(fillMode + " explicit height 400").toLatin1()) << fillMode << false << true << 200.0 << 200.0 << 200.0 << 400.0 << 400.0 << 400.0;
        QTest::newRow(QString(fillMode + " explicit width 300, height 400").toLatin1()) << fillMode << true << true << 300.0 << 300.0 << 300.0 << 400.0 << 400.0 << 400.0;
    }
}

void tst_qquickimage::geometry()
{
    QFETCH(QString, fillMode);
    QFETCH(bool, explicitWidth);
    QFETCH(bool, explicitHeight);
    QFETCH(double, itemWidth);
    QFETCH(double, itemHeight);
    QFETCH(double, paintedWidth);
    QFETCH(double, paintedHeight);
    QFETCH(double, boundingWidth);
    QFETCH(double, boundingHeight);

    QString src = testFileUrl("rect.png").toString();
    QString componentStr = "import QtQuick 2.0\nImage { source: \"" + src + "\"; fillMode: Image." + fillMode + "; ";

    if (explicitWidth)
        componentStr.append("width: 300; ");
    if (explicitHeight)
        componentStr.append("height: 400; ");
    componentStr.append("}");
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);

    QCOMPARE(obj->width(), itemWidth);
    QCOMPARE(obj->paintedWidth(), paintedWidth);
    QCOMPARE(obj->boundingRect().width(), boundingWidth);

    QCOMPARE(obj->height(), itemHeight);
    QCOMPARE(obj->paintedHeight(), paintedHeight);
    QCOMPARE(obj->boundingRect().height(), boundingHeight);
    delete obj;
}

void tst_qquickimage::big()
{
    // If the JPEG loader does not implement scaling efficiently, it would
    // have to build a 400 MB image. That would be a bug in the JPEG loader.

    QString src = testFileUrl("big.jpeg").toString();
    QString componentStr = "import QtQuick 2.0\nImage { source: \"" + src + "\"; width: 100; sourceSize.height: 256 }";

    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->width(), 100.0);
    QCOMPARE(obj->height(), 256.0);

    delete obj;
}

void tst_qquickimage::tiling_QTBUG_6716()
{
    SKIP_IF_NO_WINDOW_GRAB;

    QFETCH(QString, source);

    QQuickView view(testFileUrl(source));
    view.show();
    QVERIFY(QTest::qWaitForWindowExposed(&view));

    QQuickImage *tiling = findItem<QQuickImage>(view.rootObject(), "tiling");

    QVERIFY(tiling != nullptr);
    QImage img = view.grabWindow();
    for (int x = 0; x < tiling->width(); ++x) {
        for (int y = 0; y < tiling->height(); ++y) {
            QVERIFY(img.pixel(x, y) == qRgb(0, 255, 0));
        }
    }
}

void tst_qquickimage::tiling_QTBUG_6716_data()
{
    QTest::addColumn<QString>("source");
    QTest::newRow("vertical_tiling") << "vtiling.qml";
    QTest::newRow("horizontal_tiling") << "htiling.qml";
}

void tst_qquickimage::noLoading()
{
#if !QT_CONFIG(qml_network)
    QSKIP("Skipping due to lack of QML network feature");
#endif

    qRegisterMetaType<QQuickImageBase::Status>();

    TestHTTPServer server;
    QVERIFY2(server.listen(), qPrintable(server.errorString()));
    server.serveDirectory(dataDirectory());
    server.addRedirect("oldcolors.png", server.urlString("/colors.png"));

    QString componentStr = "import QtQuick 2.0\nImage { source: srcImage; cache: true }";
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty("srcImage", testFileUrl("heart.png"));
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->status(), QQuickImage::Ready);

    QSignalSpy sourceSpy(obj, SIGNAL(sourceChanged(QUrl)));
    QSignalSpy progressSpy(obj, SIGNAL(progressChanged(qreal)));
    QSignalSpy statusSpy(obj, SIGNAL(statusChanged(QQuickImageBase::Status)));

    // Loading local file
    ctxt->setContextProperty("srcImage", testFileUrl("green.png"));
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);
    QTRY_COMPARE(sourceSpy.size(), 1);
    QTRY_COMPARE(progressSpy.size(), 0);
    QTRY_COMPARE(statusSpy.size(), 1);

    // Loading remote file
    ctxt->setContextProperty("srcImage", server.url("/rect.png"));
    QTRY_COMPARE(obj->status(), QQuickImage::Loading);
    QTRY_COMPARE(obj->progress(), 0.0);
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);
    QTRY_COMPARE(sourceSpy.size(), 2);
    QTRY_VERIFY(progressSpy.size() >= 2);
    QTRY_COMPARE(statusSpy.size(), 3);

    // Loading remote file again - should not go through 'Loading' state.
    progressSpy.clear();
    ctxt->setContextProperty("srcImage", testFileUrl("green.png"));
    ctxt->setContextProperty("srcImage", server.url("/rect.png"));
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);
    QTRY_COMPARE(sourceSpy.size(), 4);
    QTRY_COMPARE(progressSpy.size(), 0);
    QTRY_COMPARE(statusSpy.size(), 5);

    delete obj;
}

void tst_qquickimage::paintedWidthHeight()
{
    {
        QString src = testFileUrl("heart.png").toString();
        QString componentStr = "import QtQuick 2.0\nImage { source: \"" + src + "\"; width: 200; height: 25; fillMode: Image.PreserveAspectFit }";

        QQmlComponent component(&engine);
        component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
        QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
        QVERIFY(obj != nullptr);
        QCOMPARE(obj->width(), 200.0);
        QCOMPARE(obj->height(), 25.0);
        QCOMPARE(obj->paintedWidth(), 25.0);
        QCOMPARE(obj->paintedHeight(), 25.0);

        delete obj;
    }

    {
        QString src = testFileUrl("heart.png").toString();
        QString componentStr = "import QtQuick 2.0\nImage { source: \"" + src + "\"; width: 26; height: 175; fillMode: Image.PreserveAspectFit }";
        QQmlComponent component(&engine);
        component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
        QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
        QVERIFY(obj != nullptr);
        QCOMPARE(obj->width(), 26.0);
        QCOMPARE(obj->height(), 175.0);
        QCOMPARE(obj->paintedWidth(), 26.0);
        QCOMPARE(obj->paintedHeight(), 26.0);

        delete obj;
    }
}

void tst_qquickimage::sourceSize_QTBUG_14303()
{
    QString componentStr = "import QtQuick 2.0\nImage { source: srcImage }";
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty("srcImage", testFileUrl("heart200.png"));
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());

    QSignalSpy sourceSizeSpy(obj, SIGNAL(sourceSizeChanged()));

    QTRY_VERIFY(obj != nullptr);
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);

    QTRY_COMPARE(obj->sourceSize().width(), 200);
    QTRY_COMPARE(obj->sourceSize().height(), 200);
    QTRY_COMPARE(sourceSizeSpy.size(), 0);

    ctxt->setContextProperty("srcImage", testFileUrl("colors.png"));
    QTRY_COMPARE(obj->sourceSize().width(), 120);
    QTRY_COMPARE(obj->sourceSize().height(), 120);
    QTRY_COMPARE(sourceSizeSpy.size(), 1);

    ctxt->setContextProperty("srcImage", testFileUrl("heart200.png"));
    QTRY_COMPARE(obj->sourceSize().width(), 200);
    QTRY_COMPARE(obj->sourceSize().height(), 200);
    QTRY_COMPARE(sourceSizeSpy.size(), 2);

    delete obj;
}

void tst_qquickimage::sourceSize_QTBUG_16389()
{
    QScopedPointer<QQuickView> window(new QQuickView(nullptr));
    window->setSource(testFileUrl("qtbug_16389.qml"));
    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));

    QQuickImage *image = findItem<QQuickImage>(window->rootObject(), "iconImage");
    QQuickItem *handle = findItem<QQuickItem>(window->rootObject(), "blueHandle");

    QCOMPARE(image->sourceSize().width(), 200);
    QCOMPARE(image->sourceSize().height(), 200);
    QCOMPARE(image->paintedWidth(), 0.0);
    QCOMPARE(image->paintedHeight(), 0.0);

    handle->setY(20);

    QCOMPARE(image->sourceSize().width(), 200);
    QCOMPARE(image->sourceSize().height(), 200);
    QCOMPARE(image->paintedWidth(), 20.0);
    QCOMPARE(image->paintedHeight(), 20.0);
}

// QTBUG-15690
void tst_qquickimage::nullPixmapPaint()
{
#if !QT_CONFIG(qml_network)
    QSKIP("Skipping due to lack of QML network feature");
#endif

    QScopedPointer<QQuickView> window(new QQuickView(nullptr));
    window->setSource(testFileUrl("nullpixmap.qml"));
    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));

    TestHTTPServer server;
    QVERIFY2(server.listen(), qPrintable(server.errorString()));
    server.serveDirectory(dataDirectory(), TestHTTPServer::Delay);

    QQuickImage *image = qobject_cast<QQuickImage*>(window->rootObject());
    QTRY_VERIFY(image != nullptr);
    image->setSource(server.url("/no-such-file.png"));

    QQmlTestMessageHandler messageHandler;
    // used to print "QTransform::translate with NaN called"
    QPixmap pm = QPixmap::fromImage(window->grabWindow());
    QVERIFY2(messageHandler.messages().size() == 0, qPrintable(messageHandler.messageString()));
    delete image;
}

void tst_qquickimage::imageCrash_QTBUG_22125()
{
#if !QT_CONFIG(qml_network)
    QSKIP("Skipping due to lack of QML network feature");
#endif

    TestHTTPServer server;
    QVERIFY2(server.listen(), qPrintable(server.errorString()));
    server.serveDirectory(dataDirectory(), TestHTTPServer::Delay);

    {
        QQuickView view;
        view.rootContext()->setContextProperty(QStringLiteral("serverBaseUrl"), server.baseUrl());
        view.setSource(testFileUrl("qtbug_22125.qml"));
        view.show();
        QVERIFY(QTest::qWaitForWindowExposed(&view));
        qApp->processEvents();
        // shouldn't crash when the view drops out of scope due to
        // QQuickPixmapData attempting to dereference a pointer to
        // the destroyed reader.
    }

    // shouldn't crash when deleting cancelled QQmlPixmapReplys.
    server.sendDelayedItem();
    QCoreApplication::sendPostedEvents(nullptr, QEvent::DeferredDelete);
    QCoreApplication::processEvents();
}

void tst_qquickimage::imageCrash_QTBUG_32513()
{
    QQuickView view(testFileUrl("qtbug_32513.qml"));
    view.show();
    QVERIFY(QTest::qWaitForWindowExposed(&view));
    QTest::qWait(1000);
    // shouldn't crash when the image changes sources
}

void tst_qquickimage::sourceSize_data()
{
    QTest::addColumn<int>("sourceWidth");
    QTest::addColumn<int>("sourceHeight");
    QTest::addColumn<qreal>("expectedSourceWidth");
    QTest::addColumn<qreal>("expectedSourceHeight");
    QTest::addColumn<qreal>("implicitWidth");
    QTest::addColumn<qreal>("implicitHeight");

    QTest::newRow("unscaled")           << 0 << 0 << 0.0 << 0.0 << 300.0 << 300.0;
    QTest::newRow("scale width")        << 100 << 0 << 100.0 << 0.0 << 100.0 << 100.0;
    QTest::newRow("negative height")    << 100 << -1 << 100.0 << 300.0 << 300.0 << 300.0;
    QTest::newRow("scale height")       << 0 << 150 << 0.0 << 150.0 << 150.0 << 150.0;
    QTest::newRow("negative width")     << -1 << 150 << 0.0 << 150.0 << 150.0 << 150.0;
    QTest::newRow("larger sourceSize")  << 400 << 400 << 400.0 << 400.0 << 300.0 << 300.0;
}

void tst_qquickimage::sourceSize()
{
    QFETCH(int, sourceWidth);
    QFETCH(int, sourceHeight);
    QFETCH(qreal, expectedSourceWidth);
    QFETCH(qreal, expectedSourceHeight);
    QFETCH(qreal, implicitWidth);
    QFETCH(qreal, implicitHeight);

    QScopedPointer<QQuickView> window(new QQuickView(nullptr));
    QQmlContext *ctxt = window->rootContext();
    ctxt->setContextProperty("srcWidth", sourceWidth);
    ctxt->setContextProperty("srcHeight", sourceHeight);

    window->setSource(testFileUrl("sourceSize.qml"));
    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));

    QQuickImage *image = qobject_cast<QQuickImage*>(window->rootObject());
    QVERIFY(image);

    QCOMPARE(image->sourceSize().width(), expectedSourceWidth);
    QCOMPARE(image->sourceSize().height(), expectedSourceHeight);
    QCOMPARE(image->implicitWidth(), implicitWidth);
    QCOMPARE(image->implicitHeight(), implicitHeight);
}

void tst_qquickimage::sourceSizeChanges()
{
    TestHTTPServer server;
    QVERIFY2(server.listen(), qPrintable(server.errorString()));
    server.serveDirectory(dataDirectory());

    QQmlEngine engine;
    QQmlComponent component(&engine);
    component.setData("import QtQuick 2.0\nImage { source: srcImage }", QUrl::fromLocalFile(""));
    QTRY_VERIFY(component.isReady());
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty("srcImage", "");
    QQuickImage *img = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(img != nullptr);

    QSignalSpy sourceSizeSpy(img, SIGNAL(sourceSizeChanged()));

    // Local
    ctxt->setContextProperty("srcImage", QUrl(""));
    QTRY_COMPARE(img->status(), QQuickImage::Null);
    QTRY_COMPARE(sourceSizeSpy.size(), 0);

    ctxt->setContextProperty("srcImage", testFileUrl("heart.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 1);

    ctxt->setContextProperty("srcImage", testFileUrl("heart.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 1);

    ctxt->setContextProperty("srcImage", testFileUrl("heart_copy.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 1);

    ctxt->setContextProperty("srcImage", testFileUrl("colors.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 2);

    ctxt->setContextProperty("srcImage", QUrl(""));
    QTRY_COMPARE(img->status(), QQuickImage::Null);
    QTRY_COMPARE(sourceSizeSpy.size(), 3);

    // Remote
#if !QT_CONFIG(qml_network)
    QSKIP("Skipping due to lack of QML network feature");
#endif

    ctxt->setContextProperty("srcImage", server.url("/heart.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 4);

    ctxt->setContextProperty("srcImage", server.url("/heart.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 4);

    ctxt->setContextProperty("srcImage", server.url("/heart_copy.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 4);

    ctxt->setContextProperty("srcImage", server.url("/colors.png"));
    QTRY_COMPARE(img->status(), QQuickImage::Ready);
    QTRY_COMPARE(sourceSizeSpy.size(), 5);

    ctxt->setContextProperty("srcImage", QUrl(""));
    QTRY_COMPARE(img->status(), QQuickImage::Null);
    QTRY_COMPARE(sourceSizeSpy.size(), 6);

    delete img;
}

void tst_qquickimage::sourceClipRect_data()
{
    QTest::addColumn<QRectF>("sourceClipRect");
    QTest::addColumn<QSize>("sourceSize");
    QTest::addColumn<QList<QPoint>>("redPixelLocations");
    QTest::addColumn<QList<QPoint>>("bluePixelLocations");

    QTest::newRow("unclipped") << QRectF() << QSize()
                               << (QList<QPoint>() << QPoint(80, 80) << QPoint(150, 256))
                               << (QList<QPoint>() << QPoint(28, 28) << QPoint(215, 215));
    QTest::newRow("upperLeft") << QRectF(10, 10, 100, 100) << QSize()
                               << (QList<QPoint>() << QPoint(99, 99))
                               << (QList<QPoint>() << QPoint(100, 100) << QPoint(28, 28));
    QTest::newRow("lowerRight") << QRectF(200, 200, 20, 20) << QSize()
                               << (QList<QPoint>() << QPoint(0, 0))
                               << (QList<QPoint>() << QPoint(14, 14));
    QTest::newRow("miniMiddle") << QRectF(20, 20, 60, 60) << QSize(100, 100)
                                << (QList<QPoint>() << QPoint(59, 0) << QPoint(6, 12) << QPoint(42, 42))
                                << (QList<QPoint>() << QPoint(54, 54) << QPoint(15, 59));
}

static QImage toUnscaledImage(const QImage &image)
{
    auto dpr = image.devicePixelRatio();
    return image.scaled(image.width() / dpr, image.height() / dpr);
}

void tst_qquickimage::sourceClipRect()
{
    QFETCH(QRectF, sourceClipRect);
    QFETCH(QSize, sourceSize);
    QFETCH(QList<QPoint>, redPixelLocations);
    QFETCH(QList<QPoint>, bluePixelLocations);

    QScopedPointer<QQuickView> window(new QQuickView(nullptr));

    window->setColor(Qt::blue);
    window->setSource(testFileUrl("image.qml"));
    window->show();
    QVERIFY(QTest::qWaitForWindowExposed(window.data()));

    QQuickImage *image = qobject_cast<QQuickImage*>(window->rootObject());
    QVERIFY(image);

    image->setSourceSize(sourceSize);
    QCOMPARE(image->implicitWidth(), sourceSize.isValid() ? sourceSize.width() : 300);
    QCOMPARE(image->implicitHeight(), sourceSize.isValid() ? sourceSize.height() : 300);
    image->setSourceClipRect(sourceClipRect);
    QCOMPARE(image->implicitWidth(), sourceClipRect.isNull() ? 300 : sourceClipRect.width());
    QCOMPARE(image->implicitHeight(), sourceClipRect.isNull() ? 300 : sourceClipRect.height());

    SKIP_IF_NO_WINDOW_GRAB;
    QImage contents = toUnscaledImage(window->grabWindow());
    if (contents.width() < sourceClipRect.width())
        QSKIP("Skipping due to grabWindow not functional");
#ifdef DEBUG_WRITE_OUTPUT
    contents.save("/tmp/sourceClipRect_" + QLatin1String(QTest::currentDataTag()) + ".png");
#endif
    for (auto p : redPixelLocations) {
        QRgb color = contents.pixel(p);
        QVERIFY(qRed(color) > 0xc0);
        QVERIFY(qBlue(color) < 0x0f);
    }
    for (auto p : bluePixelLocations){
        QRgb color = contents.pixel(p);
        QVERIFY(qBlue(color) > 0xc0);
        QVERIFY(qRed(color) < 0x0f);
    }
}

void tst_qquickimage::progressAndStatusChanges()
{
    TestHTTPServer server;
    QVERIFY2(server.listen(), qPrintable(server.errorString()));
    server.serveDirectory(dataDirectory());

    QQmlEngine engine;
    QString componentStr = "import QtQuick 2.0\nImage { source: srcImage }";
    QQmlContext *ctxt = engine.rootContext();
    ctxt->setContextProperty("srcImage", testFileUrl("heart.png"));
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);
    QCOMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);

    qRegisterMetaType<QQuickImageBase::Status>();
    QSignalSpy sourceSpy(obj, SIGNAL(sourceChanged(QUrl)));
    QSignalSpy progressSpy(obj, SIGNAL(progressChanged(qreal)));
    QSignalSpy statusSpy(obj, SIGNAL(statusChanged(QQuickImageBase::Status)));

    // Same image
    ctxt->setContextProperty("srcImage", testFileUrl("heart.png"));
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);
    QTRY_COMPARE(sourceSpy.size(), 0);
    QTRY_COMPARE(progressSpy.size(), 0);
    QTRY_COMPARE(statusSpy.size(), 0);

    // Loading local file
    ctxt->setContextProperty("srcImage", testFileUrl("colors.png"));
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);
    QTRY_COMPARE(sourceSpy.size(), 1);
    QTRY_COMPARE(progressSpy.size(), 0);
    QTRY_COMPARE(statusSpy.size(), 1);

    // Loading remote file
#if !QT_CONFIG(qml_network)
    QSKIP("Skipping due to lack of QML network feature");
#endif

    ctxt->setContextProperty("srcImage", server.url("/heart.png"));
    QTRY_COMPARE(obj->status(), QQuickImage::Loading);
    QTRY_COMPARE(obj->progress(), 0.0);
    QTRY_COMPARE(obj->status(), QQuickImage::Ready);
    QTRY_COMPARE(obj->progress(), 1.0);
    QTRY_COMPARE(sourceSpy.size(), 2);
    QTRY_VERIFY(progressSpy.size() > 1);
    QTRY_COMPARE(statusSpy.size(), 3);

    ctxt->setContextProperty("srcImage", "");
    QTRY_COMPARE(obj->status(), QQuickImage::Null);
    QTRY_COMPARE(obj->progress(), 0.0);
    QTRY_COMPARE(sourceSpy.size(), 3);
    QTRY_VERIFY(progressSpy.size() > 2);
    QTRY_COMPARE(statusSpy.size(), 4);

    delete obj;
}

void tst_qquickimage::progressAndChangeSignalOrder()
{
    QQuickView window;
    QVERIFY(QQuickTest::showView(window, testFileUrl("statusChanged.qml")));
    QQuickImage *image = qmlobject_cast<QQuickImage *>(window.rootObject());
    QVERIFY(image);

    QTRY_COMPARE(image->status(), QQuickImageBase::Ready);
    // QTBUG-120205: implicitSize should be correct when status changes to Ready
    QCOMPARE(image->property("statusChangedFirstImplicitSize").toSize(), QSize(300, 300));
    QCOMPARE(image->property("statusChanges").toList().size(), 1); // just Ready
    const QStringList signalOrder = image->property("changeSignals").toStringList();
    const QStringList expectedOrder = {"progress", "paintedHeight", "paintedWidth",
                                        "implicitWidth", "implicitHeight",
                                        "paintedHeight", "paintedWidth",
                                        "status", "sourceSize", "frameCount"};
    qCDebug(lcTests) << "signal order" << signalOrder;
    // exact order may not be critical, and repeated signals may be silly;
    // but this way we'll find out when it changes
    QCOMPARE(signalOrder, expectedOrder);
}

class TestQImageProvider : public QQuickImageProvider
{
public:
    TestQImageProvider() : QQuickImageProvider(Image) {}

    QImage requestImage(const QString &id, QSize *size, const QSize& requestedSize) override
    {
        Q_UNUSED(requestedSize);
        if (id == QLatin1String("first-image.png")) {
            QTest::qWait(50);
            int width = 100;
            int height = 100;
            QImage image(width, height, QImage::Format_RGB32);
            image.fill(QColor("yellow").rgb());
            if (size)
                *size = QSize(width, height);
            return image;
        }

        QTest::qWait(400);
        int width = 100;
        int height = 100;
        QImage image(width, height, QImage::Format_RGB32);
        image.fill(QColor("green").rgb());
        if (size)
            *size = QSize(width, height);
        return image;
    }
};

void tst_qquickimage::correctStatus()
{
    QQmlEngine engine;
    engine.addImageProvider(QLatin1String("test"), new TestQImageProvider());

    QQmlComponent component(&engine, testFileUrl("correctStatus.qml"));
    QObject *obj = component.create();
    QVERIFY(obj);

    QTest::qWait(200);

    // at this point image1 should be attempting to load second-image.png,
    // and should be in the loading state. Without a clear prior to that load,
    // the status can mistakenly be in the ready state.
    QCOMPARE(obj->property("status").toInt(), int(QQuickImage::Loading));

    QTest::qWait(400);
    delete obj;
}

void tst_qquickimage::highdpi()
{
    QString componentStr = "import QtQuick 2.0\nImage { source: srcImage ;  }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));
    QQmlContext *ctxt = engine.rootContext();

    // Testing "@2x" high-dpi image loading:
    // The basic case is as follows. Suppose you have foo.png,
    // which is a 64x64 png that fits in a QML layout. Now,
    // on a high-dpi system that pixmap would not provide
    // enough pixels. To fix this the app developer provides
    // a 128x128 foo@2x.png, which Qt automatically loads.
    // The image continues to be referred to as "foo.png" in
    // the QML sources, and reports a size of 64x64.
    //

    // Load "heart-highdpi@2x.png", which is a 300x300 png. As a 2x scale image it
    // should render and report a geometry of 150x150.
    ctxt->setContextProperty("srcImage", testFileUrl("heart-highdpi@2x.png"));

    QQuickImage *obj = qobject_cast<QQuickImage*>(component.create());
    QVERIFY(obj != nullptr);

    QCOMPARE(obj->width(), 150.0);
    QCOMPARE(obj->height(), 150.0);
    QCOMPARE(obj->paintedWidth(), 150.0);
    QCOMPARE(obj->paintedHeight(), 150.0);

    // Load a normal 1x image.
    ctxt->setContextProperty("srcImage", testFileUrl("heart.png"));
    QCOMPARE(obj->width(), 300.0);
    QCOMPARE(obj->height(), 300.0);
    QCOMPARE(obj->paintedWidth(), 300.0);
    QCOMPARE(obj->paintedHeight(), 300.0);

    delete obj;
}

void tst_qquickimage::highDpiFillModesAndSizes_data()
{
    QTest::addColumn<QQuickImage::FillMode>("fillMode");
    QTest::addColumn<qreal>("expectedHeightAfterSettingWidthTo100");
    QTest::addColumn<qreal>("expectedImplicitHeightAfterSettingWidthTo100");
    QTest::addColumn<qreal>("expectedPaintedWidthAfterSettingWidthTo100");
    QTest::addColumn<qreal>("expectedPaintedHeightAfterSettingWidthTo100");

    QTest::addRow("Stretch") << QQuickImage::Stretch << 150.0 << 150.0 << 100.0 << 150.0;
    QTest::addRow("PreserveAspectFit") << QQuickImage::PreserveAspectFit << 100.0 << 100.0 << 100.0 << 100.0;
    QTest::addRow("PreserveAspectCrop") << QQuickImage::PreserveAspectCrop << 150.0 << 150.0 << 150.0 << 150.0;
    QTest::addRow("Tile") << QQuickImage::Tile << 150.0 << 150.0 << 100.0 << 150.0;
    QTest::addRow("TileVertically") << QQuickImage::TileVertically << 150.0 << 150.0 << 100.0 << 150.0;
    QTest::addRow("TileHorizontally") << QQuickImage::TileHorizontally << 150.0 << 150.0 << 100.0 << 150.0;
    QTest::addRow("Pad") << QQuickImage::Pad << 150.0 << 150.0 << 150.0 << 150.0;
}

void tst_qquickimage::highDpiFillModesAndSizes()
{
    QFETCH(QQuickImage::FillMode, fillMode);
    QFETCH(qreal, expectedHeightAfterSettingWidthTo100);
    QFETCH(qreal, expectedImplicitHeightAfterSettingWidthTo100);
    QFETCH(qreal, expectedPaintedWidthAfterSettingWidthTo100);
    QFETCH(qreal, expectedPaintedHeightAfterSettingWidthTo100);

    QString componentStr = "import QtQuick 2.0\nImage { source: srcImage; }";
    QQmlComponent component(&engine);
    component.setData(componentStr.toLatin1(), QUrl::fromLocalFile(""));

    engine.rootContext()->setContextProperty("srcImage", testFileUrl("heart-highdpi@2x.png"));

    QScopedPointer<QQuickImage> image(qobject_cast<QQuickImage*>(component.create()));
    QVERIFY(image);
    QCOMPARE(image->width(), 150.0);
    QCOMPARE(image->height(), 150.0);
    QCOMPARE(image->paintedWidth(), 150.0);
    QCOMPARE(image->paintedHeight(), 150.0);
    QCOMPARE(image->implicitWidth(), 150.0);
    QCOMPARE(image->implicitHeight(), 150.0);
    QCOMPARE(image->paintedWidth(), 150.0);
    QCOMPARE(image->paintedHeight(), 150.0);

    // The implicit size should not change when setting any fillMode here.
    image->setFillMode(fillMode);
    QCOMPARE(image->fillMode(), fillMode);
    QCOMPARE(image->implicitWidth(), 150.0);
    QCOMPARE(image->implicitHeight(), 150.0);
    QCOMPARE(image->paintedWidth(), 150.0);
    QCOMPARE(image->paintedHeight(), 150.0);

    image->setWidth(100.0);
    QCOMPARE(image->width(), 100.0);
    QCOMPARE(image->height(), expectedHeightAfterSettingWidthTo100);
    QCOMPARE(image->implicitWidth(), 150.0);
    QCOMPARE(image->implicitHeight(), expectedImplicitHeightAfterSettingWidthTo100);
    QCOMPARE(image->paintedWidth(), expectedPaintedWidthAfterSettingWidthTo100);
    QCOMPARE(image->paintedHeight(), expectedPaintedHeightAfterSettingWidthTo100);
}

void tst_qquickimage::hugeImages()
{
    SKIP_IF_NO_WINDOW_GRAB;

    QQuickView view;
    view.setSource(testFileUrl("hugeImages.qml"));
    view.setGeometry(0, 0, 200, 200);
    view.show();
    QVERIFY(QTest::qWaitForWindowExposed(&view));

    QImage contents = toUnscaledImage(view.grabWindow());

    QCOMPARE(contents.pixel(0, 0), qRgba(255, 0, 0, 255));
    QCOMPARE(contents.pixel(99, 99), qRgba(255, 0, 0, 255));
    QCOMPARE(contents.pixel(100, 0), qRgba(0, 0, 255, 255));
    QCOMPARE(contents.pixel(199, 99), qRgba(0, 0, 255, 255));
}


class MyInterceptor : public QQmlAbstractUrlInterceptor
{
public:
    MyInterceptor(QUrl url) : QQmlAbstractUrlInterceptor(), m_url(url) {}
    QUrl intercept(const QUrl &url, QQmlAbstractUrlInterceptor::DataType) override
    {
        if (url.scheme() == "interceptthis")
            return m_url;
        return url;
    }

    QUrl m_url;
};

void tst_qquickimage::urlInterceptor()
{
    QQmlEngine engine;
    MyInterceptor interceptor {testFileUrl("colors.png")};
    engine.addUrlInterceptor(&interceptor);

    QQmlComponent c(&engine);

    c.setData("import QtQuick 2.12; Image { objectName: \"item\"; source: width == 0 ? \"interceptthis:doesNotExist\" : \"interceptthis:doesNotExist\"}", QUrl{});
    QScopedPointer<QQuickImage> object { qobject_cast<QQuickImage*>(c.create())};
    QVERIFY(object);
    QTRY_COMPARE(object->status(), QQuickImage::Ready);
    QTRY_COMPARE(object->progress(), 1.0);
}

void tst_qquickimage::multiFrame_data()
{
    QTest::addColumn<QString>("qmlfile");
    QTest::addColumn<bool>("asynchronous");

    QTest::addRow("default") << "multiframe.qml" << false;
    QTest::addRow("async") << "multiframeAsync.qml" << true;
    QTest::addRow("async retain") << "multiframeAsyncRetain.qml" << true;
}

void tst_qquickimage::multiFrame()
{
    SKIP_IF_NO_WINDOW_GRAB;

    QFETCH(QString, qmlfile);
    QFETCH(bool, asynchronous);
    Q_UNUSED(asynchronous);

    QQuickView view(testFileUrl(qmlfile));
    QQuickImage *image = qobject_cast<QQuickImage*>(view.rootObject());
    QVERIFY(image);
    QSignalSpy countSpy(image, SIGNAL(frameCountChanged()));
    QSignalSpy currentSpy(image, SIGNAL(currentFrameChanged()));
    if (asynchronous) {
        QCOMPARE(image->frameCount(), 0);
        QTRY_COMPARE(image->frameCount(), 4);
        QCOMPARE(countSpy.size(), 1);
    } else {
        QCOMPARE(image->frameCount(), 4);
    }
    QCOMPARE(image->currentFrame(), 0);
    view.show();
    QVERIFY(QTest::qWaitForWindowExposed(&view));

    QImage contents = toUnscaledImage(view.grabWindow());
    if (contents.width() < 40)
        QSKIP("Skipping due to grabWindow not functional");
    // The first frame is a blue ball, approximately qRgba(0x33, 0x6d, 0xcc, 0xff)
    QRgb color = contents.pixel(16, 16);
    QVERIFY(qRed(color) < 0xc0);
    QVERIFY(qGreen(color) < 0xc0);
    QVERIFY(qBlue(color) > 0xc0);

    image->setCurrentFrame(1);
    QTRY_COMPARE(image->status(), QQuickImageBase::Ready);
    QCOMPARE(currentSpy.size(), 1);
    QCOMPARE(image->currentFrame(), 1);
    contents = toUnscaledImage(view.grabWindow());
    // The second frame is a green ball, approximately qRgba(0x27, 0xc8, 0x22, 0xff)
    color = contents.pixel(16, 16);
    QVERIFY(qRed(color) < 0xc0);
    QVERIFY(qGreen(color) > 0xc0);
    QVERIFY(qBlue(color) < 0xc0);
}

void tst_qquickimage::colorSpace()
{
    QString componentStr1 = "import QtQuick 2.15\n"
                            "Image { source: srcImage; }";
    QQmlComponent component1(&engine);
    component1.setData(componentStr1.toLatin1(), QUrl::fromLocalFile(""));
    engine.rootContext()->setContextProperty("srcImage", testFileUrl("ProPhoto.jpg"));

    QScopedPointer<QQuickImage> object1 { qobject_cast<QQuickImage*>(component1.create())};
    QVERIFY(object1);
    QTRY_COMPARE(object1->status(), QQuickImageBase::Ready);
    QCOMPARE(object1->colorSpace(), QColorSpace(QColorSpace::ProPhotoRgb));

    QString componentStr2 = "import QtQuick 2.15\n"
                            "Image {\n"
                            "  source: srcImage;\n"
                            "  colorSpace.namedColorSpace: ColorSpace.SRgb;\n"
                            "}";

    QQmlComponent component2(&engine);
    component2.setData(componentStr2.toLatin1(), QUrl::fromLocalFile(""));

    QScopedPointer<QQuickImage> object2 { qobject_cast<QQuickImage*>(component2.create())};
    QVERIFY(object2);
    QTRY_COMPARE(object2->status(), QQuickImageBase::Ready);
    QCOMPARE(object2->colorSpace(), QColorSpace(QColorSpace::SRgb));
}

QTEST_MAIN(tst_qquickimage)

#include "tst_qquickimage.moc"
