tests/graphics/colour.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/graphics/colour.cpp
   3 // Purpose:     wxColour unit test
   4 // Author:      Vadim Zeitlin
   5 // Created:     2009-09-19
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2009 Vadim Zeitlin <vadim@wxwidgets.org>
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #ifdef __BORLANDC__
  17     #pragma hdrstop
  18 #endif
  19
  20 #include "wx/colour.h"
  21 #include "asserthelper.h"
  22
  23 // ----------------------------------------------------------------------------
  24 // helpers
  25 // ----------------------------------------------------------------------------
  26
  27 // Check the colour components, with and without alpha.
  28 //
  29 // NB: These are macros and not functions to have correct line numbers in case
  30 //     of failure.
  31 #define ASSERT_EQUAL_RGB(c, r, g, b) \
  32     CPPUNIT_ASSERT_EQUAL( r, (int)c.Red() ); \
  33     CPPUNIT_ASSERT_EQUAL( g, (int)c.Green() ); \
  34     CPPUNIT_ASSERT_EQUAL( b, (int)c.Blue() )
  35
  36 #define ASSERT_EQUAL_RGBA(c, r, g, b, a) \
  37     ASSERT_EQUAL_RGB(c, r, g, b); \
  38     CPPUNIT_ASSERT_EQUAL( a, (int)c.Alpha() )
  39
  40 // ----------------------------------------------------------------------------
  41 // test class
  42 // ----------------------------------------------------------------------------
  43
  44 class ColourTestCase : public CppUnit::TestCase
  45 {
  46 public:
  47     ColourTestCase() { }
  48
  49 private:
  50     CPPUNIT_TEST_SUITE( ColourTestCase );
  51         CPPUNIT_TEST( GetSetRGB );
  52         CPPUNIT_TEST( FromString );
  53     CPPUNIT_TEST_SUITE_END();
  54
  55     void GetSetRGB();
  56     void FromString();
  57
  58     DECLARE_NO_COPY_CLASS(ColourTestCase)
  59 };
  60
  61 // register in the unnamed registry so that these tests are run by default
  62 CPPUNIT_TEST_SUITE_REGISTRATION( ColourTestCase );
  63
  64 // also include in its own registry so that these tests can be run alone
  65 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ColourTestCase, "ColourTestCase" );
  66
  67 void ColourTestCase::GetSetRGB()
  68 {
  69     wxColour c;
  70     c.SetRGB(0x123456);
  71
  72     CPPUNIT_ASSERT_EQUAL( 0x56, (int)c.Red() );
  73     CPPUNIT_ASSERT_EQUAL( 0x34, (int)c.Green() );
  74     CPPUNIT_ASSERT_EQUAL( 0x12, (int)c.Blue() );
  75     CPPUNIT_ASSERT_EQUAL( wxALPHA_OPAQUE, c.Alpha() );
  76
  77     CPPUNIT_ASSERT_EQUAL( wxColour(0x123456), c );
  78     CPPUNIT_ASSERT_EQUAL( 0x123456, c.GetRGB() );
  79
  80     c.SetRGBA(0xaabbccdd);
  81
  82     CPPUNIT_ASSERT_EQUAL( 0xdd, (int)c.Red() );
  83     CPPUNIT_ASSERT_EQUAL( 0xcc, (int)c.Green() );
  84     CPPUNIT_ASSERT_EQUAL( 0xbb, (int)c.Blue() );
  85
  86     // wxX11 doesn't support alpha at all currently.
  87 #ifndef __WXX11__
  88     CPPUNIT_ASSERT_EQUAL( 0xaa, (int)c.Alpha() );
  89 #endif // __WXX11__
  90
  91     // FIXME: at least under wxGTK wxColour ctor doesn't take alpha channel
  92     //        into account: bug or feature?
  93     //CPPUNIT_ASSERT_EQUAL( wxColour(0xaabbccdd), c );
  94     CPPUNIT_ASSERT_EQUAL( 0xbbccdd, c.GetRGB() );
  95 #ifndef __WXX11__
  96     CPPUNIT_ASSERT_EQUAL( 0xaabbccdd, c.GetRGBA() );
  97 #endif // __WXX11__
  98 }
  99
 100 void ColourTestCase::FromString()
 101 {
 102     ASSERT_EQUAL_RGB( wxColour("rgb(11, 22, 33)"), 11, 22, 33 );
 103     ASSERT_EQUAL_RGBA( wxColour("rgba(11, 22, 33, 0.5)"), 11, 22, 33, 128 );
 104     ASSERT_EQUAL_RGBA( wxColour("rgba( 11, 22, 33, 0.5 )"), 11, 22, 33, 128 );
 105
 106     ASSERT_EQUAL_RGB( wxColour("#aabbcc"), 0xaa, 0xbb, 0xcc );
 107
 108     ASSERT_EQUAL_RGB( wxColour("red"), 0xff, 0, 0 );
 109
 110     wxColour col;
 111     CPPUNIT_ASSERT( !wxFromString("rgb(1, 2)", &col) );
 112     CPPUNIT_ASSERT( !wxFromString("rgba(1, 2, 3.456)", &col) );
 113     CPPUNIT_ASSERT( !wxFromString("rgba(1, 2, 3.456, foo)", &col) );
 114 }
 115