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///////////////////////////////////////////////////////////////////////////////
// Name: tests/geometry/rect.cpp
// Purpose: wxRect unit test
// Author: Vadim Zeitlin
// Created: 2004-12-11
// Copyright: (c) 2004 wxWindows
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/gdicmn.h"
#endif // WX_PRECOMP
#include "wx/iosfwrap.h"
// ----------------------------------------------------------------------------
// helper functions
// ----------------------------------------------------------------------------
// this operator is needed to use CPPUNIT_ASSERT_EQUAL with wxRects
std::ostream& operator<<(std::ostream& os, const wxRect& r)
{
os << "{"
<< r.x << ", " << r.y << ", " << r.width << ", " << r.height
<< "}";
return os;
}
// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------
class RectTestCase : public CppUnit::TestCase
{
public:
RectTestCase() { }
private:
CPPUNIT_TEST_SUITE( RectTestCase );
CPPUNIT_TEST( CentreIn );
CPPUNIT_TEST( InflateDeflate );
CPPUNIT_TEST( Operators );
CPPUNIT_TEST( Union );
CPPUNIT_TEST_SUITE_END();
void CentreIn();
void InflateDeflate();
void Operators();
void Union();
DECLARE_NO_COPY_CLASS(RectTestCase)
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( RectTestCase );
// also include in its own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( RectTestCase, "RectTestCase" );
void RectTestCase::CentreIn()
{
typedef wxRect R;
CPPUNIT_ASSERT_EQUAL( R(45, 45, 10, 10),
R(0, 0, 10, 10).CentreIn(R(0, 0, 100, 100)));
CPPUNIT_ASSERT_EQUAL( R(-5, -5, 20, 20),
R(0, 0, 20, 20).CentreIn(R(0, 0, 10, 10)));
}
void RectTestCase::InflateDeflate()
{
// This is the rectangle from the example in the documentation of wxRect::Inflate().
const wxRect r1(10, 10, 20, 40);
CPPUNIT_ASSERT(r1.Inflate( 10, 10)==wxRect( 0, 0, 40, 60));
CPPUNIT_ASSERT(r1.Inflate( 20, 30)==wxRect(-10, -20, 60, 100));
CPPUNIT_ASSERT(r1.Inflate(-10, -10)==wxRect( 20, 20, 0, 20));
CPPUNIT_ASSERT(r1.Inflate(-15, -15)==wxRect( 20, 25, 0, 10));
CPPUNIT_ASSERT(r1.Inflate( 10, 10)==r1.Deflate(-10, -10));
CPPUNIT_ASSERT(r1.Inflate( 20, 30)==r1.Deflate(-20, -30));
CPPUNIT_ASSERT(r1.Inflate(-10, -10)==r1.Deflate( 10, 10));
CPPUNIT_ASSERT(r1.Inflate(-15, -15)==r1.Deflate( 15, 15));
}
void RectTestCase::Operators()
{
// test + operator which works like Union but does not ignore empty rectangles
static const struct RectData
{
int x1, y1, w1, h1;
int x2, y2, w2, h2;
int x, y, w, h;
wxRect GetFirst() const { return wxRect(x1, y1, w1, h1); }
wxRect GetSecond() const { return wxRect(x2, y2, w2, h2); }
wxRect GetResult() const { return wxRect(x, y, w, h); }
} s_rects[] =
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 2, 2 },
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
{ 1, 1, 1, 1, 4, 4, 1, 1, 1, 1, 4, 4 },
{ 1, 1, 2, 2, 4, 4, 1, 1, 1, 1, 4, 4 },
{ 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 6, 6 },
{ 1, 1, 4, 4, 4, 4, 1, 1, 1, 1, 4, 4 }
};
for ( size_t n = 0; n < WXSIZEOF(s_rects); n++ )
{
const RectData& data = s_rects[n];
CPPUNIT_ASSERT(
( data.GetFirst() + data.GetSecond() ) == data.GetResult()
);
CPPUNIT_ASSERT(
( data.GetSecond() + data.GetFirst() ) == data.GetResult()
);
}
// test operator*() which returns the intersection of two rectangles
wxRect r1 = wxRect(0, 2, 3, 4);
wxRect r2 = wxRect(1, 2, 7, 8);
r1 *= r2;
CPPUNIT_ASSERT(wxRect(1, 2, 2, 4) == r1);
CPPUNIT_ASSERT( (r1 * wxRect()).IsEmpty() );
}
void RectTestCase::Union()
{
static const struct RectData
{
int x1, y1, w1, h1;
int x2, y2, w2, h2;
int x, y, w, h;
wxRect GetFirst() const { return wxRect(x1, y1, w1, h1); }
wxRect GetSecond() const { return wxRect(x2, y2, w2, h2); }
wxRect GetResult() const { return wxRect(x, y, w, h); }
} s_rects[] =
{
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1 },
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
{ 1, 1, 1, 1, 4, 4, 1, 1, 1, 1, 4, 4 },
{ 1, 1, 2, 2, 4, 4, 1, 1, 1, 1, 4, 4 },
{ 2, 2, 2, 2, 4, 4, 4, 4, 2, 2, 6, 6 },
{ 1, 1, 4, 4, 4, 4, 1, 1, 1, 1, 4, 4 }
};
for ( size_t n = 0; n < WXSIZEOF(s_rects); n++ )
{
const RectData& data = s_rects[n];
CPPUNIT_ASSERT(
data.GetFirst().Union(data.GetSecond()) == data.GetResult()
);
CPPUNIT_ASSERT(
data.GetSecond().Union(data.GetFirst()) == data.GetResult()
);
}
}
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