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