137 lines
3.5 KiB
C++
137 lines
3.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: tests/geometry/region.cpp
|
|
// Purpose: wxRegion unit test
|
|
// Author: Vadim Zeitlin
|
|
// Created: 2011-10-12
|
|
// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// headers
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#include "testprec.h"
|
|
|
|
|
|
#ifndef WX_PRECOMP
|
|
#include "wx/region.h"
|
|
#endif // WX_PRECOMP
|
|
|
|
#include "wx/iosfwrap.h"
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// helper functions
|
|
// ----------------------------------------------------------------------------
|
|
|
|
namespace
|
|
{
|
|
|
|
// This function could be easily added to wxRegionIterator itself, where it
|
|
// could be implemented far more efficiently as all major platforms store the
|
|
// number of rectangles anyhow, but as we only use it for debugging purposes,
|
|
// just keep it here for now.
|
|
unsigned GetRectsCount(const wxRegion& rgn)
|
|
{
|
|
unsigned count = 0;
|
|
for ( wxRegionIterator iter(rgn); iter.HaveRects(); ++iter )
|
|
count++;
|
|
return count;
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
// this operator is needed to use CPPUNIT_ASSERT_EQUAL with wxRegions
|
|
std::ostream& operator<<(std::ostream& os, const wxRegion& rgn)
|
|
{
|
|
wxRect r = rgn.GetBox();
|
|
os << "# rects = " << GetRectsCount(rgn)
|
|
<< "; bounding box {"
|
|
<< r.x << ", " << r.y << ", " << r.width << ", " << r.height
|
|
<< "}";
|
|
return os;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// test class
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class RegionTestCase : public CppUnit::TestCase
|
|
{
|
|
public:
|
|
RegionTestCase() { }
|
|
|
|
private:
|
|
CPPUNIT_TEST_SUITE( RegionTestCase );
|
|
CPPUNIT_TEST( Validity );
|
|
CPPUNIT_TEST( Intersect );
|
|
CPPUNIT_TEST_SUITE_END();
|
|
|
|
void Validity();
|
|
void Intersect();
|
|
|
|
wxDECLARE_NO_COPY_CLASS(RegionTestCase);
|
|
};
|
|
|
|
// register in the unnamed registry so that these tests are run by default
|
|
CPPUNIT_TEST_SUITE_REGISTRATION( RegionTestCase );
|
|
|
|
// also include in its own registry so that these tests can be run alone
|
|
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( RegionTestCase, "RegionTestCase" );
|
|
|
|
void RegionTestCase::Validity()
|
|
{
|
|
wxRegion r;
|
|
|
|
CPPUNIT_ASSERT_MESSAGE
|
|
(
|
|
"Default constructed region must be invalid",
|
|
!r.IsOk()
|
|
);
|
|
|
|
CPPUNIT_ASSERT_MESSAGE
|
|
(
|
|
"Invalid region should be empty",
|
|
r.IsEmpty()
|
|
);
|
|
|
|
// Offsetting an invalid region doesn't make sense.
|
|
WX_ASSERT_FAILS_WITH_ASSERT( r.Offset(1, 1) );
|
|
|
|
CPPUNIT_ASSERT_MESSAGE
|
|
(
|
|
"Combining with a valid region should create a valid region",
|
|
r.Union(0, 0, 10, 10)
|
|
);
|
|
|
|
CPPUNIT_ASSERT_EQUAL_MESSAGE
|
|
(
|
|
"Union() with invalid region should give the same region",
|
|
wxRegion(0, 0, 10, 10),
|
|
r
|
|
);
|
|
}
|
|
|
|
void RegionTestCase::Intersect()
|
|
{
|
|
const wxPoint points1[] = {
|
|
wxPoint(310, 392),
|
|
wxPoint(270, 392),
|
|
wxPoint(270, 421),
|
|
wxPoint(310, 421)
|
|
};
|
|
|
|
wxRegion region1(WXSIZEOF(points1), points1);
|
|
|
|
const wxPoint points2[] = {
|
|
wxPoint(54, 104),
|
|
wxPoint(85, 82),
|
|
wxPoint(68, 58),
|
|
wxPoint(37, 80)
|
|
};
|
|
|
|
wxRegion region2(4,points2);
|
|
|
|
CPPUNIT_ASSERT( region1.Intersect(region2) );
|
|
CPPUNIT_ASSERT( region1.IsEmpty() );
|
|
}
|