tests/auto/qwmatrix/tst_qwmatrix.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
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    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 
       
    43 #include <QtTest/QtTest>
       
    44 #include <qmatrix.h>
       
    45 #include <math.h>
       
    46 #include <qpolygon.h>
       
    47 
       
    48 Q_DECLARE_METATYPE(QRect)
       
    49 
       
    50 //TESTED_CLASS=
       
    51 //TESTED_FILES=gui/painting/qmatrix.h gui/painting/qmatrix.cpp
       
    52 
       
    53 class tst_QWMatrix : public QObject
       
    54 {
       
    55     Q_OBJECT
       
    56 
       
    57 public:
       
    58     tst_QWMatrix();
       
    59     virtual ~tst_QWMatrix();
       
    60 
       
    61 
       
    62 public slots:
       
    63     void init();
       
    64     void cleanup();
       
    65 private slots:
       
    66     void mapRect_data();
       
    67     void operator_star_qrect_data();
       
    68     void mapToPolygon_data();
       
    69     void mapRect();
       
    70     void operator_star_qrect();
       
    71     void operator_star_qwmatrix();
       
    72     void assignments();
       
    73     void mapToPolygon();
       
    74     void translate();
       
    75     void scale();
       
    76     void mapPolygon();
       
    77 
       
    78 private:
       
    79     void mapping_data();
       
    80 };
       
    81 
       
    82 Q_DECLARE_METATYPE(QMatrix)
       
    83 Q_DECLARE_METATYPE(QPolygon)
       
    84 
       
    85 tst_QWMatrix::tst_QWMatrix()
       
    86 {
       
    87 }
       
    88 
       
    89 tst_QWMatrix::~tst_QWMatrix()
       
    90 {
       
    91 }
       
    92 
       
    93 void tst_QWMatrix::init()
       
    94 {
       
    95     // No initialisation is required
       
    96 }
       
    97 
       
    98 void tst_QWMatrix::cleanup()
       
    99 {
       
   100     // No cleanup is required.
       
   101 }
       
   102 
       
   103 void tst_QWMatrix::mapRect_data()
       
   104 {
       
   105     mapping_data();
       
   106 }
       
   107 
       
   108 void tst_QWMatrix::operator_star_qrect_data()
       
   109 {
       
   110     mapping_data();
       
   111 }
       
   112 
       
   113 void tst_QWMatrix::mapToPolygon_data()
       
   114 {
       
   115     mapping_data();
       
   116 }
       
   117 
       
   118 void tst_QWMatrix::mapping_data()
       
   119 {
       
   120     //create the testtable instance and define the elements
       
   121     QTest::addColumn<QMatrix>("matrix");
       
   122     QTest::addColumn<QRect>("src");
       
   123     QTest::addColumn<QPolygon>("res");
       
   124 
       
   125     //next we fill it with data
       
   126 
       
   127     // identity
       
   128     QTest::newRow( "identity" )  << QMatrix( 1, 0, 0, 1, 0, 0 )
       
   129 			       << QRect( 10, 20, 30, 40 )
       
   130 			       << QPolygon( QRect( 10, 20, 30, 40 ) );
       
   131     // scaling
       
   132     QTest::newRow( "scale 0" )  << QMatrix( 2, 0, 0, 2, 0, 0 )
       
   133 			      << QRect( 10, 20, 30, 40 )
       
   134 			      << QPolygon( QRect( 20, 40, 60, 80 ) );
       
   135     QTest::newRow( "scale 1" )  << QMatrix( 10, 0, 0, 10, 0, 0 )
       
   136 			      << QRect( 10, 20, 30, 40 )
       
   137 			      << QPolygon( QRect( 100, 200, 300, 400 ) );
       
   138     // mirroring
       
   139     QTest::newRow( "mirror 0" )  << QMatrix( -1, 0, 0, 1, 0, 0 )
       
   140 			       << QRect( 10, 20, 30, 40 )
       
   141 			       << QPolygon( QRect( -40, 20, 30, 40 ) );
       
   142     QTest::newRow( "mirror 1" )  << QMatrix( 1, 0, 0, -1, 0, 0 )
       
   143 			       << QRect( 10, 20, 30, 40 )
       
   144 			       << QPolygon( QRect( 10, -60, 30, 40 ) );
       
   145     QTest::newRow( "mirror 2" )  << QMatrix( -1, 0, 0, -1, 0, 0 )
       
   146 			       << QRect( 10, 20, 30, 40 )
       
   147 			       << QPolygon( QRect( -40, -60, 30, 40 ) );
       
   148     QTest::newRow( "mirror 3" )  << QMatrix( -2, 0, 0, -2, 0, 0 )
       
   149 			       << QRect( 10, 20, 30, 40 )
       
   150 			       << QPolygon( QRect( -80, -120, 60, 80 ) );
       
   151     QTest::newRow( "mirror 4" )  << QMatrix( -10, 0, 0, -10, 0, 0 )
       
   152 			       << QRect( 10, 20, 30, 40 )
       
   153 			       << QPolygon( QRect( -400, -600, 300, 400 ) );
       
   154     QTest::newRow( "mirror 5" )  << QMatrix( -1, 0, 0, 1, 0, 0 )
       
   155 			       << QRect( 0, 0, 30, 40 )
       
   156 			       << QPolygon( QRect( -30, 0, 30, 40 ) );
       
   157     QTest::newRow( "mirror 6" )  << QMatrix( 1, 0, 0, -1, 0, 0 )
       
   158 			       << QRect( 0, 0, 30, 40 )
       
   159 			       << QPolygon( QRect( 0, -40, 30, 40 ) );
       
   160     QTest::newRow( "mirror 7" )  << QMatrix( -1, 0, 0, -1, 0, 0 )
       
   161 			       << QRect( 0, 0, 30, 40 )
       
   162 			       << QPolygon( QRect( -30, -40, 30, 40 ) );
       
   163     QTest::newRow( "mirror 8" )  << QMatrix( -2, 0, 0, -2, 0, 0 )
       
   164 			       << QRect( 0, 0, 30, 40 )
       
   165 			       << QPolygon( QRect( -60, -80, 60, 80 ) );
       
   166     QTest::newRow( "mirror 9" )  << QMatrix( -10, 0, 0, -10, 0, 0 )
       
   167 			       << QRect( 0, 0, 30, 40 )
       
   168 			       << QPolygon( QRect( -300, -400, 300, 400 ) );
       
   169 
       
   170 #if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
       
   171 #define M_PI 3.14159265897932384626433832795f
       
   172 #endif
       
   173 
       
   174     // rotations
       
   175     float deg = 0.;
       
   176     QTest::newRow( "rot 0 a" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   177 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   178 			      << QRect( 0, 0, 30, 40 )
       
   179 			      << QPolygon ( QRect( 0, 0, 30, 40 ) );
       
   180     deg = 0.00001f;
       
   181     QTest::newRow( "rot 0 b" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   182 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   183 			      << QRect( 0, 0, 30, 40 )
       
   184 			      << QPolygon ( QRect( 0, 0, 30, 40 ) );
       
   185     deg = 0.;
       
   186     QTest::newRow( "rot 0 c" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   187 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   188 			       << QRect( 10, 20, 30, 40 )
       
   189 			      << QPolygon ( QRect( 10, 20, 30, 40 ) );
       
   190     deg = 0.00001f;
       
   191     QTest::newRow( "rot 0 d" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   192 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   193 			       << QRect( 10, 20, 30, 40 )
       
   194 			      << QPolygon ( QRect( 10, 20, 30, 40 ) );
       
   195 
       
   196 #if 0
       
   197     // rotations
       
   198     deg = 90.;
       
   199     QTest::newRow( "rotscale 90 a" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   200 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   201 			       << QRect( 0, 0, 30, 40 )
       
   202 			       << QPolygon( QRect( 0, -299, 400, 300 ) );
       
   203     deg = 90.00001;
       
   204     QTest::newRow( "rotscale 90 b" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   205 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   206 			       << QRect( 0, 0, 30, 40 )
       
   207 			       << QPolygon( QRect( 0, -299, 400, 300 ) );
       
   208     deg = 90.;
       
   209     QTest::newRow( "rotscale 90 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   210 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   211 			       << QRect( 10, 20, 30, 40 )
       
   212 				     << QPolygon( QRect( 200, -399, 400, 300 ) );
       
   213     deg = 90.00001;
       
   214     QTest::newRow( "rotscale 90 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   215 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   216 			       << QRect( 10, 20, 30, 40 )
       
   217 				     << QPolygon( QRect( 200, -399, 400, 300 ) );
       
   218 
       
   219     deg = 180.;
       
   220     QTest::newRow( "rotscale 180 a" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   221 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   222 			       << QRect( 0, 0, 30, 40 )
       
   223 				      << QPolygon( QRect( -299, -399, 300, 400 ) );
       
   224     deg = 180.000001;
       
   225     QTest::newRow( "rotscale 180 b" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   226 						       10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   227 				      << QRect( 0, 0, 30, 40 )
       
   228 				      << QPolygon( QRect( -299, -399, 300, 400 ) );
       
   229     deg = 180.;
       
   230     QTest::newRow( "rotscale 180 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   231 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   232 				      << QRect( 10, 20, 30, 40 )
       
   233 				      << QPolygon( QRect( -399, -599, 300, 400 ) );
       
   234     deg = 180.000001;
       
   235     QTest::newRow( "rotscale 180 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   236 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   237 				      << QRect( 10, 20, 30, 40 )
       
   238 				      << QPolygon( QRect( -399, -599, 300, 400 ) );
       
   239 
       
   240     deg = 270.;
       
   241     QTest::newRow( "rotscale 270 a" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   242 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   243 				      << QRect( 0, 0, 30, 40 )
       
   244 				      << QPolygon( QRect( -399, 00, 400, 300 ) );
       
   245     deg = 270.0000001;
       
   246     QTest::newRow( "rotscale 270 b" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   247 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   248 				      << QRect( 0, 0, 30, 40 )
       
   249 				      << QPolygon( QRect( -399, 00, 400, 300 ) );
       
   250     deg = 270.;
       
   251     QTest::newRow( "rotscale 270 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   252 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   253 				      << QRect( 10, 20, 30, 40 )
       
   254 				      << QPolygon( QRect( -599, 100, 400, 300 ) );
       
   255     deg = 270.000001;
       
   256     QTest::newRow( "rotscale 270 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   257 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 	0 )
       
   258 				      << QRect( 10, 20, 30, 40 )
       
   259 				      << QPolygon( QRect( -599, 100, 400, 300 ) );
       
   260 
       
   261     // rotations that are not multiples of 90 degrees. mapRect returns the bounding rect here.
       
   262     deg = 45;
       
   263     QTest::newRow( "rot 45 a" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   264 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   265 				<< QRect( 0, 0, 10, 10 )
       
   266 				<< QPolygon( QRect( 0, -7, 14, 14 ) );
       
   267     QTest::newRow( "rot 45 b" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   268 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   269 			       << QRect( 10, 20, 30, 40 )
       
   270 				<< QPolygon( QRect( 21, -14, 49, 49 ) );
       
   271     QTest::newRow( "rot 45 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   272 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   273 			       << QRect( 0, 0, 10, 10 )
       
   274 				<< QPolygon( QRect( 0, -70, 141, 141 ) );
       
   275     QTest::newRow( "rot 45 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   276 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   277 			       << QRect( 10, 20, 30, 40 )
       
   278 				<< QPolygon( QRect( 212, -141, 495, 495 ) );
       
   279 
       
   280     deg = -45;
       
   281     QTest::newRow( "rot -45 a" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   282 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   283 			       << QRect( 0, 0, 10, 10 )
       
   284 				 << QPolygon( QRect( -7, 0, 14, 14 ) );
       
   285     QTest::newRow( "rot -45 b" )  << QMatrix( cos( M_PI*deg/180. ), -sin( M_PI*deg/180. ),
       
   286 						sin( M_PI*deg/180. ),  cos( M_PI*deg/180. ), 0, 0 )
       
   287 			       << QRect( 10, 20, 30, 40 )
       
   288 				 << QPolygon( QRect( -35, 21, 49, 49 ) );
       
   289     QTest::newRow( "rot -45 c" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   290 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   291 			       << QRect( 0, 0, 10, 10 )
       
   292 				 << QPolygon( QRect( -70, 0, 141, 141 ) );
       
   293     QTest::newRow( "rot -45 d" )  << QMatrix( 10*cos( M_PI*deg/180. ), -10*sin( M_PI*deg/180. ),
       
   294 						10*sin( M_PI*deg/180. ),  10*cos( M_PI*deg/180. ), 0, 0 )
       
   295 			       << QRect( 10, 20, 30, 40 )
       
   296 				 << QPolygon( QRect( -353, 212, 495, 495 ) );
       
   297 #endif
       
   298 }
       
   299 
       
   300 void tst_QWMatrix::mapRect()
       
   301 {
       
   302     QFETCH( QMatrix, matrix );
       
   303     QFETCH( QRect, src );
       
   304 //     qDebug( "got src: %d/%d (%d/%d), matrix=[ %f %f %f %f %f %f ]",
       
   305 //         src.x(), src.y(), src.width(), src.height(),
       
   306 //         matrix.m11(), matrix.m12(), matrix.m21(), matrix.m22(), matrix.dx(), matrix.dy() );
       
   307     QTEST( QPolygon( matrix.mapRect(src) ), "res" );
       
   308 }
       
   309 
       
   310 void tst_QWMatrix::operator_star_qrect()
       
   311 {
       
   312 #if 0 // QT_VERSION >= 0x030100
       
   313     QFETCH( QMatrix, matrix );
       
   314     QFETCH( QRect, src );
       
   315     QFETCH( QPolygon, res );
       
   316 
       
   317     QCOMPARE( (matrix * src), QRegion(res) );
       
   318 #else
       
   319     QSKIP( "Not tested with Qt versions < 3.1", SkipAll);
       
   320 #endif
       
   321 }
       
   322 
       
   323 
       
   324 void tst_QWMatrix::operator_star_qwmatrix()
       
   325 {
       
   326 #if 0
       
   327     // Left out until the matrix multiply operator behaves properly..
       
   328     QMatrix m1( 2, 3, 4, 5, 6, 7 );
       
   329     QMatrix m2( 3, 4, 5, 6, 7, 8 );
       
   330 
       
   331     QMatrix result1x2( 21, 26, 37, 46, 44, 75 );
       
   332     QMatrix result2x1( 22, 29, 34, 45, 53, 80);
       
   333 
       
   334     QMatrix product12 = m1*m2;
       
   335     QMatrix product21 = m2*m1;
       
   336 
       
   337     QVERIFY( product12==result1x2 );
       
   338     QVERIFY( product21==result2x1 );
       
   339 #else
       
   340     QSKIP( "Not tested with Qt versions since the operator is broken..",
       
   341 	  SkipAll );
       
   342 #endif
       
   343 }
       
   344 
       
   345 
       
   346 void tst_QWMatrix::assignments()
       
   347 {
       
   348     QMatrix m;
       
   349     m.scale(2, 3);
       
   350     m.rotate(45);
       
   351     m.shear(4, 5);
       
   352 
       
   353     QMatrix c1(m);
       
   354 
       
   355     QCOMPARE(m.m11(), c1.m11());
       
   356     QCOMPARE(m.m12(), c1.m12());
       
   357     QCOMPARE(m.m21(), c1.m21());
       
   358     QCOMPARE(m.m22(), c1.m22());
       
   359     QCOMPARE(m.dx(), c1.dx());
       
   360     QCOMPARE(m.dy(), c1.dy());
       
   361 
       
   362     QMatrix c2 = m;
       
   363     QCOMPARE(m.m11(), c2.m11());
       
   364     QCOMPARE(m.m12(), c2.m12());
       
   365     QCOMPARE(m.m21(), c2.m21());
       
   366     QCOMPARE(m.m22(), c2.m22());
       
   367     QCOMPARE(m.dx(),  c2.dx());
       
   368     QCOMPARE(m.dy(),  c2.dy());
       
   369 }
       
   370 
       
   371 
       
   372 void tst_QWMatrix::mapToPolygon()
       
   373 {
       
   374     QFETCH( QMatrix, matrix );
       
   375     QFETCH( QRect, src );
       
   376     QFETCH( QPolygon, res );
       
   377 
       
   378     QCOMPARE( matrix.mapToPolygon( src ), res );
       
   379 }
       
   380 
       
   381 
       
   382 void tst_QWMatrix::translate()
       
   383 {
       
   384     QMatrix m( 1, 2, 3, 4, 5, 6 );
       
   385     QMatrix res2( m );
       
   386     QMatrix res( 1, 2, 3, 4, 75, 106 );
       
   387     m.translate( 10,  20 );
       
   388     QVERIFY( m == res );
       
   389     m.translate( -10,  -20 );
       
   390     QVERIFY( m == res2 );
       
   391 }
       
   392 
       
   393 void tst_QWMatrix::scale()
       
   394 {
       
   395     QMatrix m( 1, 2, 3, 4, 5, 6 );
       
   396     QMatrix res2( m );
       
   397     QMatrix res( 10, 20, 60, 80, 5, 6 );
       
   398     m.scale( 10,  20 );
       
   399     QVERIFY( m == res );
       
   400     m.scale( 1./10.,  1./20. );
       
   401     QVERIFY( m == res2 );
       
   402 }
       
   403 
       
   404 void tst_QWMatrix::mapPolygon()
       
   405 {
       
   406     QPolygon poly;
       
   407     poly << QPoint(0, 0) << QPoint(1, 1) << QPoint(100, 1) << QPoint(1, 100) << QPoint(-1, -1) << QPoint(-1000, 1000);
       
   408 
       
   409     {
       
   410         QMatrix m;
       
   411         m.rotate(90);
       
   412 
       
   413         // rotating 90 degrees four times should result in original poly
       
   414         QPolygon mapped = m.map(m.map(m.map(m.map(poly))));
       
   415         QCOMPARE(mapped, poly);
       
   416 
       
   417         QMatrix m2;
       
   418         m2.scale(10, 10);
       
   419         QMatrix m3;
       
   420         m3.scale(0.1, 0.1);
       
   421 
       
   422         mapped = m3.map(m2.map(poly));
       
   423         QCOMPARE(mapped, poly);
       
   424     }
       
   425 
       
   426     {
       
   427         QMatrix m(1, 2, 3, 4, 5, 6);
       
   428 
       
   429         QPolygon mapped = m.map(poly);
       
   430         for (int i = 0; i < mapped.size(); ++i)
       
   431             QCOMPARE(mapped.at(i), m.map(poly.at(i)));
       
   432     }
       
   433 }
       
   434 
       
   435 QTEST_APPLESS_MAIN(tst_QWMatrix)
       
   436 #include "tst_qwmatrix.moc"