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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 | ||
22 | // ---------------------------------------------------------------------------- | |
23 | // helper functions | |
24 | // ---------------------------------------------------------------------------- | |
25 | ||
26 | namespace | |
27 | { | |
28 | // by default colour components values are output incorrectly because they | |
29 | // are unsigned chars, define a small helper struct which formats them in | |
30 | // a more useful way | |
31 | struct ColourChannel | |
32 | { | |
33 | ColourChannel(unsigned char value) : m_value(value) { } | |
34 | ||
35 | unsigned char m_value; | |
36 | }; | |
37 | ||
38 | std::ostream& operator<<(std::ostream& os, const ColourChannel& cc) | |
39 | { | |
40 | os.width(2); | |
41 | os.fill('0'); | |
42 | os << static_cast<int>(cc.m_value); | |
43 | return os; | |
44 | } | |
45 | } // anonymous namespace | |
46 | ||
47 | // this operator is needed to use CPPUNIT_ASSERT_EQUAL with wxColour objects | |
48 | std::ostream& operator<<(std::ostream& os, const wxColour& c) | |
49 | { | |
50 | os << std::hex << std::noshowbase | |
51 | << "(" | |
52 | << ColourChannel(c.Red()) << ", " | |
53 | << ColourChannel(c.Green()) << ", " | |
54 | << ColourChannel(c.Blue()); | |
55 | ||
56 | if ( const unsigned char a = c.Alpha() ) | |
57 | { | |
58 | os << ", " << ColourChannel(a); | |
59 | } | |
60 | ||
61 | os << ")"; | |
62 | ||
63 | return os; | |
64 | } | |
65 | ||
66 | // ---------------------------------------------------------------------------- | |
67 | // test class | |
68 | // ---------------------------------------------------------------------------- | |
69 | ||
70 | class ColourTestCase : public CppUnit::TestCase | |
71 | { | |
72 | public: | |
73 | ColourTestCase() { } | |
74 | ||
75 | private: | |
76 | CPPUNIT_TEST_SUITE( ColourTestCase ); | |
77 | CPPUNIT_TEST( GetSetRGB ); | |
78 | CPPUNIT_TEST_SUITE_END(); | |
79 | ||
80 | void GetSetRGB(); | |
81 | ||
82 | DECLARE_NO_COPY_CLASS(ColourTestCase) | |
83 | }; | |
84 | ||
85 | // register in the unnamed registry so that these tests are run by default | |
86 | CPPUNIT_TEST_SUITE_REGISTRATION( ColourTestCase ); | |
87 | ||
88 | // also include in it's own registry so that these tests can be run alone | |
89 | CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ColourTestCase, "ColourTestCase" ); | |
90 | ||
91 | void ColourTestCase::GetSetRGB() | |
92 | { | |
93 | wxColour c; | |
94 | c.SetRGB(0x123456); | |
95 | ||
96 | CPPUNIT_ASSERT_EQUAL( 0x56, (int)c.Red() ); | |
97 | CPPUNIT_ASSERT_EQUAL( 0x34, (int)c.Green() ); | |
98 | CPPUNIT_ASSERT_EQUAL( 0x12, (int)c.Blue() ); | |
99 | CPPUNIT_ASSERT_EQUAL( wxALPHA_OPAQUE, c.Alpha() ); | |
100 | ||
101 | CPPUNIT_ASSERT_EQUAL( wxColour(0x123456), c ); | |
102 | CPPUNIT_ASSERT_EQUAL( 0x123456, c.GetRGB() ); | |
103 | ||
104 | c.SetRGBA(0xaabbccdd); | |
105 | ||
106 | CPPUNIT_ASSERT_EQUAL( 0xdd, (int)c.Red() ); | |
107 | CPPUNIT_ASSERT_EQUAL( 0xcc, (int)c.Green() ); | |
108 | CPPUNIT_ASSERT_EQUAL( 0xbb, (int)c.Blue() ); | |
109 | CPPUNIT_ASSERT_EQUAL( 0xaa, (int)c.Alpha() ); | |
110 | ||
111 | // FIXME: at least under wxGTK wxColour ctor doesn't take alpha channel | |
112 | // into account: bug or feature? | |
113 | //CPPUNIT_ASSERT_EQUAL( wxColour(0xaabbccdd), c ); | |
114 | CPPUNIT_ASSERT_EQUAL( 0xbbccdd, c.GetRGB() ); | |
115 | CPPUNIT_ASSERT_EQUAL( 0xaabbccdd, c.GetRGBA() ); | |
116 | } | |
117 |