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#include <QtTest/QtTest>

#include <qmatrix.h>

#include <math.h>

#include <qpolygon.h>

Q_DECLARE_METATYPE(QRect)

//TESTED_CLASS=

//TESTED_FILES=gui/painting/qmatrix.h gui/painting/qmatrix.cpp

class tst_QWMatrix : public QObject

{

    Q_OBJECT

public:

    tst_QWMatrix();

    virtual ~tst_QWMatrix();

public slots:

    void init();

    void cleanup();

private slots:

    void mapRect_data();

    void operator_star_qrect_data();

    void mapToPolygon_data();

    void mapRect();

    void operator_star_qrect();

    void operator_star_qwmatrix();

    void assignments();

    void mapToPolygon();

    void translate();

    void scale();

    void mapPolygon();

private:

    void mapping_data();

};

Q_DECLARE_METATYPE(QMatrix)

Q_DECLARE_METATYPE(QPolygon)

tst_QWMatrix::tst_QWMatrix()

{

}

tst_QWMatrix::~tst_QWMatrix()

{

}

void tst_QWMatrix::init()

{

    // No initialisation is required

}

void tst_QWMatrix::cleanup()

{

    // No cleanup is required.

}

void tst_QWMatrix::mapRect_data()

{

    mapping_data();

}

void tst_QWMatrix::operator_star_qrect_data()

{

    mapping_data();

}

void tst_QWMatrix::mapToPolygon_data()

{

    mapping_data();

}

void tst_QWMatrix::mapping_data()

{

    //create the testtable instance and define the elements

    QTest::addColumn<QMatrix>("matrix");

    QTest::addColumn<QRect>("src");

    QTest::addColumn<QPolygon>("res");

    //next we fill it with data

    // identity

    QTest::newRow( "identity" )  << QMatrix( 1, 0, 0, 1, 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			       << QPolygon( QRect( 10, 20, 30, 40 ) );

    // scaling

    QTest::newRow( "scale 0" )  << QMatrix( 2, 0, 0, 2, 0, 0 )

			      << QRect( 10, 20, 30, 40 )

			      << QPolygon( QRect( 20, 40, 60, 80 ) );

    QTest::newRow( "scale 1" )  << QMatrix( 10, 0, 0, 10, 0, 0 )

			      << QRect( 10, 20, 30, 40 )

			      << QPolygon( QRect( 100, 200, 300, 400 ) );

    // mirroring

    QTest::newRow( "mirror 0" )  << QMatrix( -1, 0, 0, 1, 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			       << QPolygon( QRect( -40, 20, 30, 40 ) );

    QTest::newRow( "mirror 1" )  << QMatrix( 1, 0, 0, -1, 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			       << QPolygon( QRect( 10, -60, 30, 40 ) );

    QTest::newRow( "mirror 2" )  << QMatrix( -1, 0, 0, -1, 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			       << QPolygon( QRect( -40, -60, 30, 40 ) );

    QTest::newRow( "mirror 3" )  << QMatrix( -2, 0, 0, -2, 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			       << QPolygon( QRect( -80, -120, 60, 80 ) );

    QTest::newRow( "mirror 4" )  << QMatrix( -10, 0, 0, -10, 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			       << QPolygon( QRect( -400, -600, 300, 400 ) );

    QTest::newRow( "mirror 5" )  << QMatrix( -1, 0, 0, 1, 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( -30, 0, 30, 40 ) );

    QTest::newRow( "mirror 6" )  << QMatrix( 1, 0, 0, -1, 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( 0, -40, 30, 40 ) );

    QTest::newRow( "mirror 7" )  << QMatrix( -1, 0, 0, -1, 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( -30, -40, 30, 40 ) );

    QTest::newRow( "mirror 8" )  << QMatrix( -2, 0, 0, -2, 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( -60, -80, 60, 80 ) );

    QTest::newRow( "mirror 9" )  << QMatrix( -10, 0, 0, -10, 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( -300, -400, 300, 400 ) );

#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)

#define M_PI 3.14159265897932384626433832795f

#endif

    // rotations

    float deg = 0.;

    QTest::newRow( "rot 0 a" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			      << QRect( 0, 0, 30, 40 )

			      << QPolygon ( QRect( 0, 0, 30, 40 ) );

    deg = 0.00001f;

    QTest::newRow( "rot 0 b" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			      << QRect( 0, 0, 30, 40 )

			      << QPolygon ( QRect( 0, 0, 30, 40 ) );

    deg = 0.;

    QTest::newRow( "rot 0 c" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			      << QPolygon ( QRect( 10, 20, 30, 40 ) );

    deg = 0.00001f;

    QTest::newRow( "rot 0 d" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

			      << QPolygon ( QRect( 10, 20, 30, 40 ) );

#if 0

    // rotations

    deg = 90.;

    QTest::newRow( "rotscale 90 a" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( 0, -299, 400, 300 ) );

    deg = 90.00001;

    QTest::newRow( "rotscale 90 b" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 0, 0, 30, 40 )

			       << QPolygon( QRect( 0, -299, 400, 300 ) );

    deg = 90.;

    QTest::newRow( "rotscale 90 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

				     << QPolygon( QRect( 200, -399, 400, 300 ) );

    deg = 90.00001;

    QTest::newRow( "rotscale 90 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

				     << QPolygon( QRect( 200, -399, 400, 300 ) );

    deg = 180.;

    QTest::newRow( "rotscale 180 a" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 0, 0, 30, 40 )

				      << QPolygon( QRect( -299, -399, 300, 400 ) );

    deg = 180.000001;

    QTest::newRow( "rotscale 180 b" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						       10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

				      << QRect( 0, 0, 30, 40 )

				      << QPolygon( QRect( -299, -399, 300, 400 ) );

    deg = 180.;

    QTest::newRow( "rotscale 180 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

				      << QRect( 10, 20, 30, 40 )

				      << QPolygon( QRect( -399, -599, 300, 400 ) );

    deg = 180.000001;

    QTest::newRow( "rotscale 180 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

				      << QRect( 10, 20, 30, 40 )

				      << QPolygon( QRect( -399, -599, 300, 400 ) );

    deg = 270.;

    QTest::newRow( "rotscale 270 a" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

				      << QRect( 0, 0, 30, 40 )

				      << QPolygon( QRect( -399, 00, 400, 300 ) );

    deg = 270.0000001;

    QTest::newRow( "rotscale 270 b" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

				      << QRect( 0, 0, 30, 40 )

				      << QPolygon( QRect( -399, 00, 400, 300 ) );

    deg = 270.;

    QTest::newRow( "rotscale 270 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

				      << QRect( 10, 20, 30, 40 )

				      << QPolygon( QRect( -599, 100, 400, 300 ) );

    deg = 270.000001;

    QTest::newRow( "rotscale 270 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 	0 )

				      << QRect( 10, 20, 30, 40 )

				      << QPolygon( QRect( -599, 100, 400, 300 ) );

    // rotations that are not multiples of 90 degrees. mapRect returns the bounding rect here.

    deg = 45;

    QTest::newRow( "rot 45 a" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

				<< QRect( 0, 0, 10, 10 )

				<< QPolygon( QRect( 0, -7, 14, 14 ) );

    QTest::newRow( "rot 45 b" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

				<< QPolygon( QRect( 21, -14, 49, 49 ) );

    QTest::newRow( "rot 45 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 0, 0, 10, 10 )

				<< QPolygon( QRect( 0, -70, 141, 141 ) );

    QTest::newRow( "rot 45 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

				<< QPolygon( QRect( 212, -141, 495, 495 ) );

    deg = -45;

    QTest::newRow( "rot -45 a" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 0, 0, 10, 10 )

				 << QPolygon( QRect( -7, 0, 14, 14 ) );

    QTest::newRow( "rot -45 b" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),

						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

				 << QPolygon( QRect( -35, 21, 49, 49 ) );

    QTest::newRow( "rot -45 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 0, 0, 10, 10 )

				 << QPolygon( QRect( -70, 0, 141, 141 ) );

    QTest::newRow( "rot -45 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),

						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )

			       << QRect( 10, 20, 30, 40 )

				 << QPolygon( QRect( -353, 212, 495, 495 ) );

#endif

}

void tst_QWMatrix::mapRect()

{

    QFETCH( QMatrix, matrix );

    QFETCH( QRect, src );

//     qDebug( "got src: %d/%d (%d/%d), matrix=[ %f %f %f %f %f %f ]",

//         src.x(), src.y(), src.width(), src.height(),

//         matrix.m11(), matrix.m12(), matrix.m21(), matrix.m22(), matrix.dx(), matrix.dy() );

    QTEST( QPolygon( matrix.mapRect(src) ), "res" );

}

void tst_QWMatrix::operator_star_qrect()

{

#if 0 // QT_VERSION >= 0x030100

    QFETCH( QMatrix, matrix );

    QFETCH( QRect, src );

    QFETCH( QPolygon, res );

    QCOMPARE( (matrix * src), QRegion(res) );

#else

    QSKIP( "Not tested with Qt versions < 3.1", SkipAll);

#endif

}

void tst_QWMatrix::operator_star_qwmatrix()

{

#if 0

    // Left out until the matrix multiply operator behaves properly..

    QMatrix m1( 2, 3, 4, 5, 6, 7 );

    QMatrix m2( 3, 4, 5, 6, 7, 8 );

    QMatrix result1x2( 21, 26, 37, 46, 44, 75 );

    QMatrix result2x1( 22, 29, 34, 45, 53, 80);

    QMatrix product12 = m1*m2;

    QMatrix product21 = m2*m1;

    QVERIFY( product12==result1x2 );

    QVERIFY( product21==result2x1 );

#else

    QSKIP( "Not tested with Qt versions since the operator is broken..",

	  SkipAll );

#endif

}

void tst_QWMatrix::assignments()

{

    QMatrix m;

    m.scale(2, 3);

    m.rotate(45);

    m.shear(4, 5);

    QMatrix c1(m);

    QCOMPARE(m.m11(), c1.m11());

    QCOMPARE(m.m12(), c1.m12());

    QCOMPARE(m.m21(), c1.m21());

    QCOMPARE(m.m22(), c1.m22());

    QCOMPARE(m.dx(), c1.dx());

    QCOMPARE(m.dy(), c1.dy());

    QMatrix c2 = m;

    QCOMPARE(m.m11(), c2.m11());

    QCOMPARE(m.m12(), c2.m12());

    QCOMPARE(m.m21(), c2.m21());

    QCOMPARE(m.m22(), c2.m22());

    QCOMPARE(m.dx(),  c2.dx());

    QCOMPARE(m.dy(),  c2.dy());

}

void tst_QWMatrix::mapToPolygon()

{

    QFETCH( QMatrix, matrix );

    QFETCH( QRect, src );

    QFETCH( QPolygon, res );

    QCOMPARE( matrix.mapToPolygon( src ), res );

}

void tst_QWMatrix::translate()

{

    QMatrix m( 1, 2, 3, 4, 5, 6 );

    QMatrix res2( m );

    QMatrix res( 1, 2, 3, 4, 75, 106 );

    m.translate( 10,  20 );

    QVERIFY( m == res );

    m.translate( -10,  -20 );

    QVERIFY( m == res2 );

}

void tst_QWMatrix::scale()

{

    QMatrix m( 1, 2, 3, 4, 5, 6 );

    QMatrix res2( m );

    QMatrix res( 10, 20, 60, 80, 5, 6 );

    m.scale( 10,  20 );

    QVERIFY( m == res );

    m.scale( 1./10.,  1./20. );

    QVERIFY( m == res2 );

}

void tst_QWMatrix::mapPolygon()

{

    QPolygon poly;

    poly << QPoint(0, 0) << QPoint(1, 1) << QPoint(100, 1) << QPoint(1, 100) << QPoint(-1, -1) << QPoint(-1000, 1000);

    {

        QMatrix m;

        m.rotate(90);

        // rotating 90 degrees four times should result in original poly

        QPolygon mapped = m.map(m.map(m.map(m.map(poly))));

        QCOMPARE(mapped, poly);

        QMatrix m2;

        m2.scale(10, 10);

        QMatrix m3;

        m3.scale(0.1, 0.1);

        mapped = m3.map(m2.map(poly));

        QCOMPARE(mapped, poly);

    }

    {

        QMatrix m(1, 2, 3, 4, 5, 6);

        QPolygon mapped = m.map(poly);

        for (int i = 0; i < mapped.size(); ++i)

            QCOMPARE(mapped.at(i), m.map(poly.at(i)));

    }

}

QTEST_APPLESS_MAIN(tst_QWMatrix)

#include "tst_qwmatrix.moc"