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#include <QtTest/QtTest>

#include <qapplication.h>

#include <qdebug.h>

#include <qsvgrenderer.h>

#include <qsvggenerator.h>

#include <QPainter>

#include <QPen>

#include <QPicture>

#include <QXmlStreamReader>

//TESTED_CLASS=

//TESTED_FILES=

class tst_QSvgRenderer : public QObject

{

Q_OBJECT

public:

    tst_QSvgRenderer();

    virtual ~tst_QSvgRenderer();

private slots:

    void getSetCheck();

    void inexistentUrl();

    void emptyUrl();

    void testStrokeWidth();

    void testMapViewBoxToTarget();

    void testRenderElement();

    void constructorQXmlStreamReader() const;

    void loadQXmlStreamReader() const;

    void nestedQXmlStreamReader() const;

    void stylePropagation() const;

    void matrixForElement() const;

    void gradientStops() const;

    void gradientRefs();

    void fillRule();

    void opacity();

    void paths();

    void displayMode();

    void strokeInherit();

    void testFillInheritance();

    void testStopOffsetOpacity();

    void testUseElement();

#ifndef QT_NO_COMPRESS

    void testGzLoading();

    void testGzHelper_data();

    void testGzHelper();

#endif

private:

    static const char *const src;

};

const char *const tst_QSvgRenderer::src = "<svg><g><rect x='250' y='250' width='500' height='500'/>"

                                          "<rect id='foo' x='400' y='400' width='100' height='100'/></g></svg>";

tst_QSvgRenderer::tst_QSvgRenderer()

{

}

tst_QSvgRenderer::~tst_QSvgRenderer()

{

}

// Testing get/set functions

void tst_QSvgRenderer::getSetCheck()

{

    QSvgRenderer obj1;

    // int QSvgRenderer::framesPerSecond()

    // void QSvgRenderer::setFramesPerSecond(int)

    obj1.setFramesPerSecond(20);

    QCOMPARE(20, obj1.framesPerSecond());

    obj1.setFramesPerSecond(0);

    QCOMPARE(0, obj1.framesPerSecond());

    obj1.setFramesPerSecond(INT_MIN);

    QCOMPARE(0, obj1.framesPerSecond()); // Can't have a negative framerate

    obj1.setFramesPerSecond(INT_MAX);

    QCOMPARE(INT_MAX, obj1.framesPerSecond());

}

void tst_QSvgRenderer::inexistentUrl()

{

    const char *src = "<svg><g><path d=\"\" style=\"stroke:url(#inexistent)\"/></g></svg>";

    QByteArray data(src);

    QSvgRenderer renderer(data);

    QVERIFY(renderer.isValid());

}

void tst_QSvgRenderer::emptyUrl()

{

    const char *src = "<svg><text fill=\"url()\" /></svg>";

    QByteArray data(src);

    QSvgRenderer renderer(data);

    QVERIFY(renderer.isValid());

}

void tst_QSvgRenderer::testStrokeWidth()

{

    qreal squareSize = 30.0;

    qreal strokeWidth = 1.0;

    qreal topLeft = 100.0;

    QSvgGenerator generator;

    QBuffer buffer;

    QByteArray byteArray;

    buffer.setBuffer(&byteArray);

    generator.setOutputDevice(&buffer);

    QPainter painter(&generator);

    painter.setBrush(Qt::blue);

    // Draw a rect with stroke

    painter.setPen(QPen(Qt::black, strokeWidth));

    painter.drawRect(topLeft, topLeft, squareSize, squareSize);

    // Draw a rect without stroke

    painter.setPen(Qt::NoPen);

    painter.drawRect(topLeft, topLeft, squareSize, squareSize);

    painter.end();

    // Insert ID tags into the document

    byteArray.insert(byteArray.indexOf("stroke=\"#000000\""), "id=\"SquareStroke\" ");

    byteArray.insert(byteArray.indexOf("stroke=\"none\""), "id=\"SquareNoStroke\" ");

    QSvgRenderer renderer(byteArray);

    QRectF noStrokeRect = renderer.boundsOnElement("SquareNoStroke");

    QCOMPARE(noStrokeRect.width(), squareSize);

    QCOMPARE(noStrokeRect.height(), squareSize);

    QCOMPARE(noStrokeRect.x(), topLeft);

    QCOMPARE(noStrokeRect.y(), topLeft);

    QRectF strokeRect = renderer.boundsOnElement("SquareStroke");

    QCOMPARE(strokeRect.width(), squareSize + strokeWidth);

    QCOMPARE(strokeRect.height(), squareSize + strokeWidth);

    QCOMPARE(strokeRect.x(), topLeft - (strokeWidth / 2));

    QCOMPARE(strokeRect.y(), topLeft - (strokeWidth / 2));

}

void tst_QSvgRenderer::testMapViewBoxToTarget()

{

    const char *src = "<svg><g><rect x=\"250\" y=\"250\" width=\"500\" height=\"500\" /></g></svg>";

    QByteArray data(src);

    { // No viewport, viewBox, targetRect, or deviceRect -> boundingRect

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter);

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(0, 0, 500, 500));

    }

    { // No viewport, viewBox, targetRect -> deviceRect

        QPicture picture;

        picture.setBoundingRect(QRect(100, 100, 200, 200));

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter);

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(100, 100, 200, 200));

    }

    { // No viewport, viewBox -> targetRect

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter, QRectF(50, 50, 250, 250));

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(50, 50, 250, 250));

    }

    data.replace("<svg>", "<svg viewBox=\"0 0 1000 1000\">");

    { // No viewport, no targetRect -> viewBox

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter);

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(250, 250, 500, 500));

    }

    data.replace("<svg", "<svg width=\"500\" height=\"500\"");

    { // Viewport

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter);

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(125, 125, 250, 250));

    }

}

void tst_QSvgRenderer::testRenderElement()

{

    QByteArray data(src);

    { // No viewport, viewBox, targetRect, or deviceRect -> boundingRect

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter, QLatin1String("foo"));

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(0, 0, 100, 100));

    }

    { // No viewport, viewBox, targetRect -> deviceRect

        QPicture picture;

        picture.setBoundingRect(QRect(100, 100, 200, 200));

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter, QLatin1String("foo"));

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(100, 100, 200, 200));

    }

    { // No viewport, viewBox -> targetRect

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter, QLatin1String("foo"), QRectF(50, 50, 250, 250));

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(50, 50, 250, 250));

    }

    data.replace("<svg>", "<svg viewBox=\"0 0 1000 1000\">");

    { // No viewport, no targetRect -> view box size

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter, QLatin1String("foo"));

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(0, 0, 100, 100));

    }

    data.replace("<svg", "<svg width=\"500\" height=\"500\"");

    { // Viewport

        QPicture picture;

        QPainter painter(&picture);

        QSvgRenderer rend(data);

        rend.render(&painter, QLatin1String("foo"));

        painter.end();

        QCOMPARE(picture.boundingRect(), QRect(0, 0, 100, 100));

    }

}

void tst_QSvgRenderer::constructorQXmlStreamReader() const

{

    const QByteArray data(src);

    QXmlStreamReader reader(data);

    QPicture picture;

    QPainter painter(&picture);

    QSvgRenderer rend(&reader);

    rend.render(&painter, QLatin1String("foo"));

    painter.end();

    QCOMPARE(picture.boundingRect(), QRect(0, 0, 100, 100));

}

void tst_QSvgRenderer::loadQXmlStreamReader() const

{

    const QByteArray data(src);

    QXmlStreamReader reader(data);

    QPicture picture;

    QPainter painter(&picture);

    QSvgRenderer rend;

    rend.load(&reader);

    rend.render(&painter, QLatin1String("foo"));

    painter.end();

    QCOMPARE(picture.boundingRect(), QRect(0, 0, 100, 100));

}

void tst_QSvgRenderer::nestedQXmlStreamReader() const

{

    const QByteArray data(QByteArray("<bar>") + QByteArray(src) + QByteArray("</bar>"));

    QXmlStreamReader reader(data);

    QCOMPARE(reader.readNext(), QXmlStreamReader::StartDocument);

    QCOMPARE(reader.readNext(), QXmlStreamReader::StartElement);

    QCOMPARE(reader.name().toString(), QLatin1String("bar"));

    QPicture picture;

    QPainter painter(&picture);

    QSvgRenderer renderer(&reader);

    renderer.render(&painter, QLatin1String("foo"));

    painter.end();

    QCOMPARE(picture.boundingRect(), QRect(0, 0, 100, 100));

    QCOMPARE(reader.readNext(), QXmlStreamReader::EndElement);

    QCOMPARE(reader.name().toString(), QLatin1String("bar"));

    QCOMPARE(reader.readNext(), QXmlStreamReader::EndDocument);

    QVERIFY(reader.atEnd());

    QVERIFY(!reader.hasError());

}

void tst_QSvgRenderer::stylePropagation() const

{

    QByteArray data("<svg>"

                      "<g id='foo' style='fill:#ffff00;'>"

                        "<g id='bar' style='fill:#ff00ff;'>"

                          "<g id='baz' style='fill:#00ffff;'>"

                            "<rect id='alpha' x='0' y='0' width='100' height='100'/>"

                          "</g>"

                          "<rect id='beta' x='100' y='0' width='100' height='100'/>"

                        "</g>"

                        "<rect id='gamma' x='0' y='100' width='100' height='100'/>"

                      "</g>"

                      "<rect id='delta' x='100' y='100' width='100' height='100'/>"

                    "</svg>"); // alpha=cyan, beta=magenta, gamma=yellow, delta=black

    QImage image1(200, 200, QImage::Format_RGB32);

    QImage image2(200, 200, QImage::Format_RGB32);

    QImage image3(200, 200, QImage::Format_RGB32);

    QPainter painter;

    QSvgRenderer renderer(data);

    QLatin1String parts[4] = {QLatin1String("alpha"), QLatin1String("beta"), QLatin1String("gamma"), QLatin1String("delta")};

    QVERIFY(painter.begin(&image1));

    for (int i = 0; i < 4; ++i)

        renderer.render(&painter, parts[i], QRectF(renderer.boundsOnElement(parts[i])));

    painter.end();

    QVERIFY(painter.begin(&image2));

    renderer.render(&painter, renderer.viewBoxF());

    painter.end();

    QVERIFY(painter.begin(&image3));

    painter.setPen(Qt::NoPen);

    painter.setBrush(QBrush(Qt::cyan));

    painter.drawRect(0, 0, 100, 100);

    painter.setBrush(QBrush(Qt::magenta));

    painter.drawRect(100, 0, 100, 100);

    painter.setBrush(QBrush(Qt::yellow));

    painter.drawRect(0, 100, 100, 100);

    painter.setBrush(QBrush(Qt::black));

    painter.drawRect(100, 100, 100, 100);

    painter.end();

    QCOMPARE(image1, image2);

    QCOMPARE(image1, image3);

}

static qreal transformNorm(const QTransform &m)

{

    return qSqrt(m.m11() * m.m11()

        + m.m12() * m.m12()

        + m.m13() * m.m13()

        + m.m21() * m.m21()

        + m.m22() * m.m22()

        + m.m23() * m.m23()

        + m.m31() * m.m31()

        + m.m32() * m.m32()

        + m.m33() * m.m33());

}

static bool diffIsSmallEnough(double diff, double norm)

{

    return diff <= 1e-12 * norm;

}

static bool diffIsSmallEnough(float diff, float norm)

{

    return diff <= 1e-5 * norm;

}

static void compareTransforms(const QTransform &m1, const QTransform &m2)

{

    qreal norm1 = transformNorm(m1);

    qreal norm2 = transformNorm(m2);

    qreal diffNorm = transformNorm(QTransform(m1.m11() - m2.m11(),

                                              m1.m12() - m2.m12(),

                                              m1.m13() - m2.m13(),

                                              m1.m21() - m2.m21(),

                                              m1.m22() - m2.m22(),

                                              m1.m23() - m2.m23(),

                                              m1.m31() - m2.m31(),

                                              m1.m32() - m2.m32(),

                                              m1.m33() - m2.m33()));

    QVERIFY(diffIsSmallEnough(diffNorm, qMin(norm1, norm2)));

}

void tst_QSvgRenderer::matrixForElement() const

{

    QByteArray data("<svg>"

                      "<g id='ichi' transform='translate(-3,1)'>"

                        "<g id='ni' transform='rotate(45)'>"

                          "<g id='san' transform='scale(4,2)'>"

                            "<g id='yon' transform='matrix(1,2,3,4,5,6)'>"

                              "<rect id='firkant' x='-1' y='-1' width='2' height='2'/>"

                            "</g>"

                          "</g>"

                        "</g>"

                      "</g>"

                    "</svg>");

    QImage image(13, 37, QImage::Format_RGB32);

    QPainter painter(&image);

    QSvgRenderer renderer(data);

    compareTransforms(QTransform(painter.worldMatrix()), QTransform(renderer.matrixForElement(QLatin1String("ichi"))));

    painter.translate(-3, 1);

    compareTransforms(QTransform(painter.worldMatrix()), QTransform(renderer.matrixForElement(QLatin1String("ni"))));

    painter.rotate(45);

    compareTransforms(QTransform(painter.worldMatrix()), QTransform(renderer.matrixForElement(QLatin1String("san"))));

    painter.scale(4, 2);

    compareTransforms(QTransform(painter.worldMatrix()), QTransform(renderer.matrixForElement(QLatin1String("yon"))));

    painter.setWorldMatrix(QMatrix(1, 2, 3, 4, 5, 6), true);

    compareTransforms(QTransform(painter.worldMatrix()), QTransform(renderer.matrixForElement(QLatin1String("firkant"))));

}

void tst_QSvgRenderer::gradientStops() const

{

    {

        QByteArray data("<svg>"

                          "<defs>"

                            "<linearGradient id=\"gradient\">"

                            "</linearGradient>"

                          "</defs>"

                          "<rect fill=\"url(#gradient)\" height=\"64\" width=\"64\" x=\"0\" y=\"0\"/>"

                        "</svg>");

        QSvgRenderer renderer(data);

        QImage image(64, 64, QImage::Format_ARGB32_Premultiplied), refImage(64, 64, QImage::Format_ARGB32_Premultiplied);

        image.fill(0x87654321);

        refImage.fill(0x87654321);

        QPainter painter(&image);

        renderer.render(&painter);

        QCOMPARE(image, refImage);

    }

    {

        QByteArray data("<svg>"

                          "<defs>"

                            "<linearGradient id=\"gradient\">"

                              "<stop offset=\"1\" stop-color=\"cyan\"/>"

                            "</linearGradient>"

                          "</defs>"

                          "<rect fill=\"url(#gradient)\" height=\"64\" width=\"64\" x=\"0\" y=\"0\"/>"

                        "</svg>");

        QSvgRenderer renderer(data);

        QImage image(64, 64, QImage::Format_ARGB32_Premultiplied), refImage(64, 64, QImage::Format_ARGB32_Premultiplied);

        refImage.fill(0xff00ffff);

        QPainter painter(&image);

        renderer.render(&painter);

        QCOMPARE(image, refImage);

    }

    {

        QByteArray data("<svg>"

                          "<defs>"

                            "<linearGradient id=\"gradient\">"

                              "<stop offset=\"0\" stop-color=\"red\"/>"

                              "<stop offset=\"0\" stop-color=\"cyan\"/>"

                              "<stop offset=\"0.5\" stop-color=\"cyan\"/>"

                              "<stop offset=\"0.5\" stop-color=\"magenta\"/>"

                              "<stop offset=\"0.5\" stop-color=\"yellow\"/>"

                              "<stop offset=\"1\" stop-color=\"yellow\"/>"

                              "<stop offset=\"1\" stop-color=\"blue\"/>"

                            "</linearGradient>"

                          "</defs>"

                          "<rect fill=\"url(#gradient)\" height=\"64\" width=\"64\" x=\"0\" y=\"0\"/>"

                        "</svg>");

        QSvgRenderer renderer(data);