092e772848
The unit test added in 607b800444 didn't work on
the systems using 32 bpp screens, i.e. almost all of them, because it tried to
use 24 bpp wxNativePixelData with them.
Fix this by using wxAlphaPixelData, which won't work on non 32 bpp systems,
and so is still not ideal, but at least makes the test work on most systems by
default.
See #17666.
124 lines
3.0 KiB
C++
124 lines
3.0 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 __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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#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();
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virtual void tearDown();
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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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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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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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