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qt5base-lts/tests/auto/gui/painting/qwmatrix/tst_qwmatrix.cpp
Oswald Buddenhagen 882bf3475c expand tabs and related whitespace fixes in *.{cpp,h,qdoc} 
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Started-by: Thiago Macieira <thiago.macieira@intel.com>
Change-Id: I77bb84e71c63ce75e0709e5b94bee18e3ce6ab9e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2014-01-13 22:46:50 +01:00

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <qmatrix.h>
#include <qmath.h>
#include <qpolygon.h>
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 mapToPolygon_data();
void mapRect();
void operator_star_qwmatrix();
void assignments();
void mapToPolygon();
void translate();
void scale();
void mapPolygon();
private:
void mapping_data();
};
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::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_WIN) || defined(Q_OS_WINCE)) && !defined(M_PI)
#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_qwmatrix()
{
QMatrix m1( 2, 3, 4, 5, 6, 7 );
QMatrix m2( 3, 4, 5, 6, 7, 8 );
QMatrix result1x2( 21, 26, 37, 46, 60, 74 );
QMatrix result2x1( 22, 29, 34, 45, 52, 68);
QMatrix product12 = m1*m2;
QMatrix product21 = m2*m1;
QVERIFY( product12==result1x2 );
QVERIFY( product21==result2x1 );
}
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"
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