bb996f2895
Don't call wxTextMeasure::DoGetTextExtent() with NULL width pointer, it now supposes that both width and height pointers are non-NULL. Add at least a trivial unit test for GetMultiLineTextExtent(). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72700 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
146 lines
4.2 KiB
C++
146 lines
4.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: tests/graphics/measuring.cpp
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// Purpose: Tests for wxGraphicsRenderer::CreateMeasuringContext
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// Author: Kevin Ollivier, Vadim Zeitlin (non wxGC parts)
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// Created: 2008-02-12
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// RCS-ID: $Id$
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// Copyright: (c) 2008 Kevin Ollivier <kevino@theolliviers.com>
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// (c) 2012 Vadim Zeitlin <vadim@wxwidgets.org>
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///////////////////////////////////////////////////////////////////////////////
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#include "testprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/app.h"
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#include "wx/font.h"
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#include "wx/window.h"
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#endif // WX_PRECOMP
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// wxCairoRenderer::CreateMeasuringContext() is not implement for wxX11
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#if wxUSE_GRAPHICS_CONTEXT && !defined(__WXX11__)
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#include "wx/graphics.h"
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#define TEST_GC
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#endif
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#include "wx/dcclient.h"
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// ----------------------------------------------------------------------------
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// test class
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// ----------------------------------------------------------------------------
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class MeasuringTextTestCase : public CppUnit::TestCase
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{
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public:
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MeasuringTextTestCase() { }
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private:
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CPPUNIT_TEST_SUITE( MeasuringTextTestCase );
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CPPUNIT_TEST( DCGetTextExtent );
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CPPUNIT_TEST( WindowGetTextExtent );
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CPPUNIT_TEST( GetPartialTextExtent );
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#ifdef TEST_GC
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CPPUNIT_TEST( GraphicsGetTextExtent );
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#endif // TEST_GC
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CPPUNIT_TEST_SUITE_END();
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template <typename T>
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void DoTestGetTextExtent(const T& obj);
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void DCGetTextExtent();
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void WindowGetTextExtent();
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void GetPartialTextExtent();
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#ifdef TEST_GC
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void GraphicsGetTextExtent();
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#endif // TEST_GC
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DECLARE_NO_COPY_CLASS(MeasuringTextTestCase)
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};
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// register in the unnamed registry so that these tests are run by default
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CPPUNIT_TEST_SUITE_REGISTRATION( MeasuringTextTestCase );
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// also include in its own registry so that these tests can be run alone
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CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( MeasuringTextTestCase, "MeasuringTextTestCase" );
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// ----------------------------------------------------------------------------
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// tests themselves
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// ----------------------------------------------------------------------------
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template <typename T>
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void MeasuringTextTestCase::DoTestGetTextExtent(const T& obj)
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{
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// Test that getting the height only doesn't crash.
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int y;
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obj.GetTextExtent("H", NULL, &y);
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CPPUNIT_ASSERT( y > 1 );
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wxSize size = obj.GetTextExtent("Hello");
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CPPUNIT_ASSERT( size.x > 1 );
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CPPUNIT_ASSERT_EQUAL( y, size.y );
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}
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void MeasuringTextTestCase::DCGetTextExtent()
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{
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wxClientDC dc(wxTheApp->GetTopWindow());
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DoTestGetTextExtent(dc);
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int w;
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dc.GetMultiLineTextExtent("Good\nbye", &w, NULL);
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const wxSize sz = dc.GetTextExtent("Good");
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CPPUNIT_ASSERT_EQUAL( sz.x, w );
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CPPUNIT_ASSERT( dc.GetMultiLineTextExtent("Good\nbye").y >= 2*sz.y );
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}
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void MeasuringTextTestCase::WindowGetTextExtent()
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{
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wxWindow* const win = wxTheApp->GetTopWindow();
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DoTestGetTextExtent(*win);
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}
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void MeasuringTextTestCase::GetPartialTextExtent()
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{
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wxClientDC dc(wxTheApp->GetTopWindow());
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wxArrayInt widths;
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CPPUNIT_ASSERT( dc.GetPartialTextExtents("Hello", widths) );
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CPPUNIT_ASSERT_EQUAL( 5, widths.size() );
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CPPUNIT_ASSERT_EQUAL( widths[0], dc.GetTextExtent("H").x );
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CPPUNIT_ASSERT_EQUAL( widths[4], dc.GetTextExtent("Hello").x );
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}
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#ifdef TEST_GC
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void MeasuringTextTestCase::GraphicsGetTextExtent()
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{
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wxGraphicsRenderer* renderer = wxGraphicsRenderer::GetDefaultRenderer();
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CPPUNIT_ASSERT(renderer);
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wxGraphicsContext* context = renderer->CreateMeasuringContext();
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CPPUNIT_ASSERT(context);
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wxFont font(12, wxFONTFAMILY_DEFAULT, wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL);
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CPPUNIT_ASSERT(font.IsOk());
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context->SetFont(font, *wxBLACK);
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double width, height, descent, externalLeading = 0.0;
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context->GetTextExtent("x", &width, &height, &descent, &externalLeading);
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// TODO: Determine a way to make these tests more robust.
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CPPUNIT_ASSERT(width > 0.0);
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CPPUNIT_ASSERT(height > 0.0);
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}
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#endif // TEST_GC
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