| 1 | /////////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: tests/graphics/measuring.cpp |
| 3 | // Purpose: Tests for wxGraphicsRenderer::CreateMeasuringContext |
| 4 | // Author: Kevin Ollivier, Vadim Zeitlin (non wxGC parts) |
| 5 | // Created: 2008-02-12 |
| 6 | // RCS-ID: $Id$ |
| 7 | // Copyright: (c) 2008 Kevin Ollivier <kevino@theolliviers.com> |
| 8 | // (c) 2012 Vadim Zeitlin <vadim@wxwidgets.org> |
| 9 | /////////////////////////////////////////////////////////////////////////////// |
| 10 | |
| 11 | // ---------------------------------------------------------------------------- |
| 12 | // headers |
| 13 | // ---------------------------------------------------------------------------- |
| 14 | |
| 15 | #include "testprec.h" |
| 16 | |
| 17 | #ifdef __BORLANDC__ |
| 18 | #pragma hdrstop |
| 19 | #endif |
| 20 | |
| 21 | #ifndef WX_PRECOMP |
| 22 | #include "wx/app.h" |
| 23 | #include "wx/font.h" |
| 24 | #include "wx/window.h" |
| 25 | #endif // WX_PRECOMP |
| 26 | |
| 27 | // wxCairoRenderer::CreateMeasuringContext() is not implement for wxX11 |
| 28 | #if wxUSE_GRAPHICS_CONTEXT && !defined(__WXX11__) |
| 29 | #include "wx/graphics.h" |
| 30 | #define TEST_GC |
| 31 | #endif |
| 32 | |
| 33 | #include "wx/dcclient.h" |
| 34 | #include "wx/dcps.h" |
| 35 | #include "wx/metafile.h" |
| 36 | |
| 37 | // ---------------------------------------------------------------------------- |
| 38 | // test class |
| 39 | // ---------------------------------------------------------------------------- |
| 40 | |
| 41 | class MeasuringTextTestCase : public CppUnit::TestCase |
| 42 | { |
| 43 | public: |
| 44 | MeasuringTextTestCase() { } |
| 45 | |
| 46 | private: |
| 47 | CPPUNIT_TEST_SUITE( MeasuringTextTestCase ); |
| 48 | CPPUNIT_TEST( DCGetTextExtent ); |
| 49 | CPPUNIT_TEST( WindowGetTextExtent ); |
| 50 | CPPUNIT_TEST( GetPartialTextExtent ); |
| 51 | #ifdef TEST_GC |
| 52 | CPPUNIT_TEST( GraphicsGetTextExtent ); |
| 53 | #endif // TEST_GC |
| 54 | CPPUNIT_TEST_SUITE_END(); |
| 55 | |
| 56 | void DCGetTextExtent(); |
| 57 | void WindowGetTextExtent(); |
| 58 | |
| 59 | void GetPartialTextExtent(); |
| 60 | |
| 61 | #ifdef TEST_GC |
| 62 | void GraphicsGetTextExtent(); |
| 63 | #endif // TEST_GC |
| 64 | |
| 65 | DECLARE_NO_COPY_CLASS(MeasuringTextTestCase) |
| 66 | }; |
| 67 | |
| 68 | // register in the unnamed registry so that these tests are run by default |
| 69 | CPPUNIT_TEST_SUITE_REGISTRATION( MeasuringTextTestCase ); |
| 70 | |
| 71 | // also include in its own registry so that these tests can be run alone |
| 72 | CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MeasuringTextTestCase, "MeasuringTextTestCase" ); |
| 73 | |
| 74 | // ---------------------------------------------------------------------------- |
| 75 | // helper for XXXTextExtent() methods |
| 76 | // ---------------------------------------------------------------------------- |
| 77 | |
| 78 | template <typename T> |
| 79 | struct GetTextExtentTester |
| 80 | { |
| 81 | // Constructor runs a couple of simple tests for GetTextExtent(). |
| 82 | GetTextExtentTester(const T& obj) |
| 83 | { |
| 84 | // Test that getting the height only doesn't crash. |
| 85 | int y; |
| 86 | obj.GetTextExtent("H", NULL, &y); |
| 87 | |
| 88 | CPPUNIT_ASSERT( y > 1 ); |
| 89 | |
| 90 | wxSize size = obj.GetTextExtent("Hello"); |
| 91 | CPPUNIT_ASSERT( size.x > 1 ); |
| 92 | CPPUNIT_ASSERT_EQUAL( y, size.y ); |
| 93 | } |
| 94 | }; |
| 95 | |
| 96 | // ---------------------------------------------------------------------------- |
| 97 | // tests themselves |
| 98 | // ---------------------------------------------------------------------------- |
| 99 | |
| 100 | void MeasuringTextTestCase::DCGetTextExtent() |
| 101 | { |
| 102 | wxClientDC dc(wxTheApp->GetTopWindow()); |
| 103 | |
| 104 | GetTextExtentTester<wxClientDC> testDC(dc); |
| 105 | |
| 106 | int w; |
| 107 | dc.GetMultiLineTextExtent("Good\nbye", &w, NULL); |
| 108 | const wxSize sz = dc.GetTextExtent("Good"); |
| 109 | CPPUNIT_ASSERT_EQUAL( sz.x, w ); |
| 110 | |
| 111 | CPPUNIT_ASSERT( dc.GetMultiLineTextExtent("Good\nbye").y >= 2*sz.y ); |
| 112 | |
| 113 | // Test the functions with some other DC kinds also. |
| 114 | #if wxUSE_PRINTING_ARCHITECTURE && wxUSE_POSTSCRIPT |
| 115 | wxPostScriptDC psdc; |
| 116 | // wxPostScriptDC doesn't have any font set by default but its |
| 117 | // GetTextExtent() requires one to be set. This is probably a bug and we |
| 118 | // should set the default font in it implicitly but for now just work |
| 119 | // around it. |
| 120 | psdc.SetFont(*wxNORMAL_FONT); |
| 121 | GetTextExtentTester<wxPostScriptDC> testPS(psdc); |
| 122 | #endif |
| 123 | |
| 124 | #if wxUSE_ENH_METAFILE |
| 125 | wxEnhMetaFileDC metadc; |
| 126 | GetTextExtentTester<wxEnhMetaFileDC> testMF(metadc); |
| 127 | #endif |
| 128 | } |
| 129 | |
| 130 | void MeasuringTextTestCase::WindowGetTextExtent() |
| 131 | { |
| 132 | wxWindow* const win = wxTheApp->GetTopWindow(); |
| 133 | |
| 134 | GetTextExtentTester<wxWindow> testWin(*win); |
| 135 | } |
| 136 | |
| 137 | void MeasuringTextTestCase::GetPartialTextExtent() |
| 138 | { |
| 139 | wxClientDC dc(wxTheApp->GetTopWindow()); |
| 140 | |
| 141 | wxArrayInt widths; |
| 142 | CPPUNIT_ASSERT( dc.GetPartialTextExtents("Hello", widths) ); |
| 143 | CPPUNIT_ASSERT_EQUAL( 5, widths.size() ); |
| 144 | CPPUNIT_ASSERT_EQUAL( widths[0], dc.GetTextExtent("H").x ); |
| 145 | CPPUNIT_ASSERT_EQUAL( widths[4], dc.GetTextExtent("Hello").x ); |
| 146 | } |
| 147 | |
| 148 | #ifdef TEST_GC |
| 149 | |
| 150 | void MeasuringTextTestCase::GraphicsGetTextExtent() |
| 151 | { |
| 152 | wxGraphicsRenderer* renderer = wxGraphicsRenderer::GetDefaultRenderer(); |
| 153 | CPPUNIT_ASSERT(renderer); |
| 154 | wxGraphicsContext* context = renderer->CreateMeasuringContext(); |
| 155 | CPPUNIT_ASSERT(context); |
| 156 | wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL); |
| 157 | CPPUNIT_ASSERT(font.IsOk()); |
| 158 | context->SetFont(font, *wxBLACK); |
| 159 | double width, height, descent, externalLeading = 0.0; |
| 160 | context->GetTextExtent("x", &width, &height, &descent, &externalLeading); |
| 161 | |
| 162 | // TODO: Determine a way to make these tests more robust. |
| 163 | CPPUNIT_ASSERT(width > 0.0); |
| 164 | CPPUNIT_ASSERT(height > 0.0); |
| 165 | |
| 166 | } |
| 167 | |
| 168 | #endif // TEST_GC |