db15e99884
This method used to return a dangling pointer to a temporary buffer, which resulted in a crash when using it, e.g. in the unit test. Fix this by keeping a QImage as a member in wxBitmapRefData, so that the pointer to its data remain valid until UngetRawData() is called. Also check that GetRawData() returns a non-null pointer in the test. Closes https://github.com/wxWidgets/wxWidgets/pull/1067
162 lines
4.1 KiB
C++
162 lines
4.1 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: tests/graphics/bitmap.cpp
|
|
// Purpose: wxBitmap unit test
|
|
// Author: Vadim Zeitlin
|
|
// Created: 2010-03-29
|
|
// Copyright: (c) 2010 Vadim Zeitlin <vadim@wxwidgets.org>
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// headers
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#include "testprec.h"
|
|
|
|
#ifdef wxHAS_RAW_BITMAP
|
|
|
|
#ifdef __BORLANDC__
|
|
#pragma hdrstop
|
|
#endif
|
|
|
|
#include "wx/bitmap.h"
|
|
#include "wx/rawbmp.h"
|
|
#include "wx/dcmemory.h"
|
|
#if wxUSE_GRAPHICS_CONTEXT
|
|
#include "wx/graphics.h"
|
|
#endif // wxUSE_GRAPHICS_CONTEXT
|
|
|
|
#define ASSERT_EQUAL_RGB(c, r, g, b) \
|
|
CPPUNIT_ASSERT_EQUAL( r, (int)c.Red() ); \
|
|
CPPUNIT_ASSERT_EQUAL( g, (int)c.Green() ); \
|
|
CPPUNIT_ASSERT_EQUAL( b, (int)c.Blue() )
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// test class
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class BitmapTestCase : public CppUnit::TestCase
|
|
{
|
|
public:
|
|
BitmapTestCase() { }
|
|
|
|
virtual void setUp() wxOVERRIDE;
|
|
virtual void tearDown() wxOVERRIDE;
|
|
|
|
private:
|
|
CPPUNIT_TEST_SUITE( BitmapTestCase );
|
|
CPPUNIT_TEST( Mask );
|
|
CPPUNIT_TEST( OverlappingBlit );
|
|
CPPUNIT_TEST_SUITE_END();
|
|
|
|
void Mask();
|
|
void OverlappingBlit();
|
|
|
|
wxBitmap m_bmp;
|
|
|
|
wxDECLARE_NO_COPY_CLASS(BitmapTestCase);
|
|
};
|
|
|
|
// register in the unnamed registry so that these tests are run by default
|
|
CPPUNIT_TEST_SUITE_REGISTRATION( BitmapTestCase );
|
|
|
|
// also include in its own registry so that these tests can be run alone
|
|
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( BitmapTestCase, "BitmapTestCase" );
|
|
|
|
void BitmapTestCase::setUp()
|
|
{
|
|
m_bmp.Create(10, 10);
|
|
|
|
wxMemoryDC dc(m_bmp);;
|
|
dc.SetBackground(*wxWHITE);
|
|
dc.Clear();
|
|
|
|
dc.SetBrush(*wxBLACK_BRUSH);
|
|
dc.DrawRectangle(4, 4, 2, 2);
|
|
|
|
dc.SetPen(*wxRED_PEN);
|
|
dc.DrawLine(0, 0, 10, 10);
|
|
dc.DrawLine(10, 0, 0, 10);
|
|
}
|
|
|
|
void BitmapTestCase::tearDown()
|
|
{
|
|
m_bmp = wxNullBitmap;
|
|
}
|
|
|
|
void BitmapTestCase::Mask()
|
|
{
|
|
wxMask *mask = new wxMask(m_bmp, *wxBLACK);
|
|
m_bmp.SetMask(mask);
|
|
|
|
// copying masks should work
|
|
wxMask *mask2 = NULL;
|
|
REQUIRE_NOTHROW(mask2 = new wxMask(*mask));
|
|
m_bmp.SetMask(mask2);
|
|
}
|
|
|
|
void BitmapTestCase::OverlappingBlit()
|
|
{
|
|
m_bmp.SetMask( NULL );
|
|
|
|
// Clear to white.
|
|
{
|
|
wxMemoryDC dc(m_bmp);
|
|
#if wxUSE_GRAPHICS_CONTEXT
|
|
wxGraphicsContext* gc = dc.GetGraphicsContext();
|
|
if ( gc )
|
|
{
|
|
gc->SetAntialiasMode(wxANTIALIAS_NONE);
|
|
}
|
|
#endif // wxUSE_GRAPHICS_CONTEXT
|
|
|
|
dc.SetBackground( *wxWHITE );
|
|
dc.Clear();
|
|
|
|
// Draw red line across the top.
|
|
|
|
dc.SetPen(*wxRED_PEN);
|
|
dc.DrawLine(0, 0, 10, 0);
|
|
|
|
// Scroll down one line.
|
|
|
|
dc.Blit( 0, 1, 10, 9, &dc, 0, 0 );
|
|
} // Select the bitmap out of the memory DC before using it directly.
|
|
// Now, lines 0 and 1 should be red, lines 2++ should still be white.
|
|
|
|
if ( m_bmp.GetDepth() == 32 )
|
|
{
|
|
wxAlphaPixelData npd( m_bmp );
|
|
CPPUNIT_ASSERT_MESSAGE( "Expected raw pixels to not be NULL", npd );
|
|
wxAlphaPixelData::Iterator it( npd );
|
|
|
|
ASSERT_EQUAL_RGB( it, 255, 0, 0 );
|
|
it.OffsetY( npd, 1 );
|
|
ASSERT_EQUAL_RGB( it, 255, 0, 0 );
|
|
it.OffsetY( npd, 1 );
|
|
ASSERT_EQUAL_RGB( it, 255, 255, 255 );
|
|
it.OffsetY( npd, 1 );
|
|
ASSERT_EQUAL_RGB( it, 255, 255, 255 );
|
|
}
|
|
else
|
|
{
|
|
wxNativePixelData npd( m_bmp );
|
|
wxNativePixelData::Iterator it( npd );
|
|
if ( !npd )
|
|
{
|
|
CPPUNIT_FAIL( "Raw access to bitmap data unavailable" );
|
|
}
|
|
else
|
|
{
|
|
ASSERT_EQUAL_RGB( it, 255, 0, 0 );
|
|
it.OffsetY( npd, 1 );
|
|
ASSERT_EQUAL_RGB( it, 255, 0, 0 );
|
|
it.OffsetY( npd, 1 );
|
|
ASSERT_EQUAL_RGB( it, 255, 255, 255 );
|
|
it.OffsetY( npd, 1 );
|
|
ASSERT_EQUAL_RGB( it, 255, 255, 255 );
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif //wxHAS_RAW_BITMAP
|