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:      $Id$
   7 // Copyright:   (c) 2008 Kevin Ollivier <kevino@theolliviers.com>
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ----------------------------------------------------------------------------
  11 // headers
  12 // ----------------------------------------------------------------------------
  13
  14 #include "testprec.h"
  15
  16 // wxCairoRenderer::CreateMeasuringContext() is not implement for wxX11
  17 #if wxUSE_GRAPHICS_CONTEXT && !defined(__WXX11__)
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/app.h"
  25     #include "wx/font.h"
  26     #include "wx/window.h"
  27 #endif // WX_PRECOMP
  28
  29 #include "wx/graphics.h"
  30 // ----------------------------------------------------------------------------
  31 // test class
  32 // ----------------------------------------------------------------------------
  33
  34 class MeasuringContextTestCase : public CppUnit::TestCase
  35 {
  36 public:
  37     MeasuringContextTestCase() { }
  38
  39     virtual void setUp();
  40     virtual void tearDown();
  41
  42 private:
  43     CPPUNIT_TEST_SUITE( MeasuringContextTestCase );
  44         CPPUNIT_TEST( GetTextExtent );
  45     CPPUNIT_TEST_SUITE_END();
  46
  47     void GetTextExtent();
  48
  49     wxWindow *m_win;
  50
  51     DECLARE_NO_COPY_CLASS(MeasuringContextTestCase)
  52 };
  53
  54 // register in the unnamed registry so that these tests are run by default
  55 CPPUNIT_TEST_SUITE_REGISTRATION( MeasuringContextTestCase );
  56
  57 // also include in its own registry so that these tests can be run alone
  58 CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MeasuringContextTestCase, "MeasuringContextTestCase" );
  59
  60 // ----------------------------------------------------------------------------
  61 // test initialization
  62 // ----------------------------------------------------------------------------
  63
  64 void MeasuringContextTestCase::setUp()
  65 {
  66     m_win = wxTheApp->GetTopWindow();
  67 }
  68
  69 void MeasuringContextTestCase::tearDown()
  70 {
  71     m_win = NULL;
  72 }
  73
  74 // ----------------------------------------------------------------------------
  75 // tests themselves
  76 // ----------------------------------------------------------------------------
  77
  78 void MeasuringContextTestCase::GetTextExtent()
  79 {
  80     wxGraphicsRenderer* renderer = wxGraphicsRenderer::GetDefaultRenderer();
  81     CPPUNIT_ASSERT(renderer);
  82     wxGraphicsContext* context = renderer->CreateMeasuringContext();
  83     CPPUNIT_ASSERT(context);
  84     wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
  85     CPPUNIT_ASSERT(font.IsOk());
  86     context->SetFont(font, *wxBLACK);
  87     double width, height, descent, externalLeading = 0.0;
  88     context->GetTextExtent("x", &width, &height, &descent, &externalLeading);
  89
  90     // TODO: Determine a way to make these tests more robust.
  91     CPPUNIT_ASSERT(width > 0.0);
  92     CPPUNIT_ASSERT(height > 0.0);
  93
  94 }
  95
  96 #endif