160 lines
4.0 KiB
C++
160 lines
4.0 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/graphics/bitmap.cpp
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// Purpose: wxBitmap unit test
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// Author: Vadim Zeitlin
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// Created: 2010-03-29
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// Copyright: (c) 2010 Vadim Zeitlin <vadim@wxwidgets.org>
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#ifdef wxHAS_RAW_BITMAP
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#include "wx/bitmap.h"
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#include "wx/rawbmp.h"
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#include "wx/dcmemory.h"
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/graphics.h"
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#endif // wxUSE_GRAPHICS_CONTEXT
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#define ASSERT_EQUAL_RGB(c, r, g, b) \
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CPPUNIT_ASSERT_EQUAL( r, (int)c.Red() ); \
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CPPUNIT_ASSERT_EQUAL( g, (int)c.Green() ); \
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CPPUNIT_ASSERT_EQUAL( b, (int)c.Blue() )
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// ----------------------------------------------------------------------------
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// test class
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// ----------------------------------------------------------------------------
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class BitmapTestCase : public CppUnit::TestCase
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{
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public:
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BitmapTestCase() { }
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virtual void setUp() wxOVERRIDE;
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virtual void tearDown() wxOVERRIDE;
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private:
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CPPUNIT_TEST_SUITE( BitmapTestCase );
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CPPUNIT_TEST( Mask );
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CPPUNIT_TEST( OverlappingBlit );
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CPPUNIT_TEST_SUITE_END();
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void Mask();
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void OverlappingBlit();
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wxBitmap m_bmp;
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wxDECLARE_NO_COPY_CLASS(BitmapTestCase);
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( BitmapTestCase );
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// also include in its own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( BitmapTestCase, "BitmapTestCase" );
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void BitmapTestCase::setUp()
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{
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m_bmp.Create(10, 10);
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wxMemoryDC dc(m_bmp);;
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dc.SetBackground(*wxWHITE);
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dc.Clear();
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dc.SetBrush(*wxBLACK_BRUSH);
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dc.DrawRectangle(4, 4, 2, 2);
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dc.SetPen(*wxRED_PEN);
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dc.DrawLine(0, 0, 10, 10);
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dc.DrawLine(10, 0, 0, 10);
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}
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void BitmapTestCase::tearDown()
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{
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m_bmp = wxNullBitmap;
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}
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void BitmapTestCase::Mask()
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{
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wxMask *mask = new wxMask(m_bmp, *wxBLACK);
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m_bmp.SetMask(mask);
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// copying masks should work
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wxMask *mask2 = new wxMask(*mask);
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m_bmp.SetMask(mask2);
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}
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void BitmapTestCase::OverlappingBlit()
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{
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m_bmp.SetMask( NULL );
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// Clear to white.
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{
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wxMemoryDC dc(m_bmp);
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#if wxUSE_GRAPHICS_CONTEXT
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wxGraphicsContext* gc = dc.GetGraphicsContext();
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if ( gc )
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{
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gc->SetAntialiasMode(wxANTIALIAS_NONE);
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}
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#endif // wxUSE_GRAPHICS_CONTEXT
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dc.SetBackground( *wxWHITE );
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dc.Clear();
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// Draw red line across the top.
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dc.SetPen(*wxRED_PEN);
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dc.DrawLine(0, 0, 10, 0);
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// Scroll down one line.
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dc.Blit( 0, 1, 10, 9, &dc, 0, 0 );
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} // Select the bitmap out of the memory DC before using it directly.
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// Now, lines 0 and 1 should be red, lines 2++ should still be white.
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if ( m_bmp.GetDepth() == 32 )
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{
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wxAlphaPixelData npd( m_bmp );
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wxAlphaPixelData::Iterator it( npd );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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}
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else
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{
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wxNativePixelData npd( m_bmp );
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wxNativePixelData::Iterator it( npd );
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if ( !npd )
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{
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CPPUNIT_FAIL( "Raw access to bitmap data unavailable" );
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}
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else
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{
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 0, 0 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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it.OffsetY( npd, 1 );
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ASSERT_EQUAL_RGB( it, 255, 255, 255 );
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}
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}
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}
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#endif //wxHAS_RAW_BITMAP
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