tests/graphics/measuring.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        tests/graphics/measuring.cpp
   3 // Purpose:     Tests for wxGraphicsRenderer::CreateMeasuringContext
   4 // Author:      Kevin Ollivier
   5 // Created:     2008-02-12
   6 // RCS-ID:      $Id: clientsize.cpp 53740 2008-05-25 02:56:22Z VZ $
   7 // Copyright:   (c) 2008 Kevin Ollivier <kevino@theolliviers.com>
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 #if wxUSE_GRAPHICS_CONTEXT
  17
  18 #ifdef __BORLANDC__
  19     #pragma hdrstop
  20 #endif
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/app.h"
  24     #include "wx/font.h"
  25     #include "wx/window.h"
  26 #endif // WX_PRECOMP
  27
  28 #include "wx/graphics.h"
  29 // ----------------------------------------------------------------------------
  30 // test class
  31 // ----------------------------------------------------------------------------
  32
  33 class MeasuringContextTestCase : public CppUnit::TestCase
  34 {
  35 public:
  36     MeasuringContextTestCase() { }
  37
  38     virtual void setUp();
  39     virtual void tearDown();
  40
  41 private:
  42     CPPUNIT_TEST_SUITE( MeasuringContextTestCase );
  43         CPPUNIT_TEST( GetTextExtent );
  44     CPPUNIT_TEST_SUITE_END();
  45
  46     void GetTextExtent();
  47
  48     wxWindow *m_win;
  49
  50     DECLARE_NO_COPY_CLASS(MeasuringContextTestCase)
  51 };
  52
  53 // register in the unnamed registry so that these tests are run by default
  54 CPPUNIT_TEST_SUITE_REGISTRATION( MeasuringContextTestCase );
  55
  56 // also include in it's own registry so that these tests can be run alone
  57 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MeasuringContextTestCase, "MeasuringContextTestCase" );
  58
  59 // ----------------------------------------------------------------------------
  60 // test initialization
  61 // ----------------------------------------------------------------------------
  62
  63 void MeasuringContextTestCase::setUp()
  64 {
  65     m_win = wxTheApp->GetTopWindow();
  66 }
  67
  68 void MeasuringContextTestCase::tearDown()
  69 {
  70     m_win = NULL;
  71 }
  72
  73 // ----------------------------------------------------------------------------
  74 // tests themselves
  75 // ----------------------------------------------------------------------------
  76
  77 void MeasuringContextTestCase::GetTextExtent()
  78 {
  79     wxGraphicsRenderer* renderer = wxGraphicsRenderer::GetDefaultRenderer();
  80     CPPUNIT_ASSERT(renderer);
  81     wxGraphicsContext* context = renderer->CreateMeasuringContext();
  82     CPPUNIT_ASSERT(context);
  83     wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
  84     CPPUNIT_ASSERT(font.IsOk());
  85     context->SetFont(font, *wxBLACK);
  86     double width, height, descent, externalLeading = 0.0;
  87     context->GetTextExtent("x", &width, &height, &descent, &externalLeading);
  88
  89     // TODO: Determine a way to make these tests more robust.
  90     CPPUNIT_ASSERT(width > 0.0);
  91     CPPUNIT_ASSERT(height > 0.0);
  92
  93 }
  94
  95 #endif