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0f31e05cb871b9522a8c02dd269b5e83b68ac678
wxWidgets/tests/graphics/clippingbox.cpp
Artur Wieczorek 0f31e05cb8 Adopt clipping box tests for GTK+ 3 environment 
1. Under GTK+ 3 wxDC is implemented as wxGCDC (with underlying Cairo renderer) and hence there is no need to test wxDC individually.
2. wxRegion is implemented under GTK+ 2 using GdkRegion but under GTK+ 3 it is implemented using cairo_region_t so some region attributes can be slightly different in some circumstances for both ports. This happens e.g. for non-rectangular regions which can have slightly different clip extents for GTK+ 2 and 3. We have to take this into account in the tests of non-rectangular clipping region and accept that actual clipping box position can differ of few pixels from expected position (so comparing clipping box positions shouldn't be exact but with some error tolerance).
2016-08-09 20:48:43 +02:00

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///////////////////////////////////////////////////////////////////////////////
// Name: tests/graphics/clippingbox.cpp
// Purpose: clipping box unit tests
// Author: Artur Wieczorek
// Created: 2016-06-29
// Copyright: (c) 2016 wxWidgets development team
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#include "wx/bitmap.h"
#include "wx/dcmemory.h"
#if wxUSE_GRAPHICS_CONTEXT
#include "wx/dcgraph.h"
#endif // wxUSE_GRAPHICS_CONTEXT
// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------
static const wxSize s_dcSize(100, 120);
static const wxColour s_bgColour(*wxWHITE); // colour to draw outside clipping box
static const wxColour s_fgColour(*wxGREEN); // colour to draw inside clipping box
#if wxUSE_IMAGE
static bool CompareImageFuzzy(const wxImage& img1, const wxImage& img2, int posTolerance = 0)
{
// For each (x,y) pixel in the image1 we check
// if there is a pixel of the same value in the square
// area (x-d..x+d, y-d..y+d) around the pixel (x,y)
// in the image2. If not, we consider pixels
// and images as different.
if ( img1.GetWidth() != img2.GetWidth() )
return false;
if ( img1.GetHeight() != img2.GetHeight() )
return false;
const int w = img1.GetWidth();
const int h = img1.GetHeight();
for ( int y1 = 0; y1 < h; y1++ )
{
int y2min = wxMax(y1 - posTolerance, 0);
int y2max = wxMin(y1 + posTolerance, h);
for( int x1 = 0; x1 < w; x1++ )
{
int x2min = wxMax(x1 - posTolerance, 0);
int x2max = wxMin(x1 + posTolerance, w);
unsigned char r1 = img1.GetRed(x1, y1);
unsigned char g1 = img1.GetGreen(x1, y1);
unsigned char b1 = img1.GetBlue(x1, y1);
bool pix2Found = false;
for( int y2 = y2min; y2 <= y2max && !pix2Found; y2++ )
for( int x2 = x2min; x2 <= x2max; x2++ )
{
if( r1 == img2.GetRed(x2, y2) &&
g1 == img2.GetGreen(x2, y2) &&
b1 == img2.GetBlue(x2, y2))
{
pix2Found = true;
break;
}
}
if ( !pix2Found )
return false;
}
}
return true;
}
#endif // wxUSE_IMAGE
class ClippingBoxTestCaseBase : public CppUnit::TestCase
{
public:
ClippingBoxTestCaseBase()
{
m_dc = NULL;
m_bmp.Create(s_dcSize);
}
virtual ~ClippingBoxTestCaseBase()
{
m_bmp = wxNullBitmap;
}
virtual void setUp() { wxASSERT( m_dc ); }
virtual wxDC* GetDC(wxMemoryDC* dc) = 0;
private:
void CheckBox(int x, int y, int width, int height,
const wxBitmap& bmpRef = wxNullBitmap, int posTolerance = 0);
protected:
void InitialState();
void InitialStateWithTransformedDC();
void OneRegion();
void OneLargeRegion();
void OneOuterRegion();
void OneRegionNegDim();
void OneRegionAndReset();
void OneRegionAndEmpty();
void OneRegionWithTransformedDC();
void TwoRegionsOverlapping();
void TwoRegionsOverlappingNegDim();
void TwoRegionsNonOverlapping();
void TwoRegionsNonOverlappingNegDim();
void OneDevRegion();
void OneLargeDevRegion();
void OneOuterDevRegion();
void OneDevRegionNegDim();
void OneDevRegionNonRect();
void OneDevRegionAndReset();
void OneDevRegionAndEmpty();
void TwoDevRegionsOverlapping();
void TwoDevRegionsOverlappingNegDim();
void TwoDevRegionsNonOverlapping();
void TwoDevRegionsNonOverlappingNegDim();
virtual void FlushDC() = 0;
wxBitmap m_bmp;
wxDC* m_dc;
wxDECLARE_NO_COPY_CLASS(ClippingBoxTestCaseBase);
};
// wxDC tests
class ClippingBoxTestCaseDC : public ClippingBoxTestCaseBase
{
public:
ClippingBoxTestCaseDC()
{
m_mdc.SelectObject(m_bmp);
m_dc = &m_mdc;
}
virtual ~ClippingBoxTestCaseDC()
{
m_mdc.SelectObject(wxNullBitmap);
}
virtual void setUp() wxOVERRIDE
{
m_mdc.DestroyClippingRegion();
wxBrush bgBrush(s_bgColour, wxBRUSHSTYLE_SOLID);
m_mdc.SetBackground(bgBrush);
m_mdc.Clear();
}
virtual wxDC* GetDC(wxMemoryDC* dc) wxOVERRIDE
{
return dc;
}
protected:
virtual void FlushDC() wxOVERRIDE {}
private:
CPPUNIT_TEST_SUITE( ClippingBoxTestCaseDC );
CPPUNIT_TEST( InitialState );
CPPUNIT_TEST( InitialStateWithTransformedDC );
CPPUNIT_TEST( OneRegion );
CPPUNIT_TEST( OneLargeRegion );
CPPUNIT_TEST( OneOuterRegion );
CPPUNIT_TEST( OneRegionNegDim );
CPPUNIT_TEST( OneRegionAndReset );
CPPUNIT_TEST( OneRegionAndEmpty );
CPPUNIT_TEST( OneRegionWithTransformedDC );
CPPUNIT_TEST( TwoRegionsOverlapping );
CPPUNIT_TEST( TwoRegionsOverlappingNegDim );
CPPUNIT_TEST( TwoRegionsNonOverlapping );
CPPUNIT_TEST( TwoRegionsNonOverlappingNegDim );
CPPUNIT_TEST( OneDevRegion);
CPPUNIT_TEST( OneLargeDevRegion );
CPPUNIT_TEST( OneOuterDevRegion );
CPPUNIT_TEST( OneDevRegionNegDim );
CPPUNIT_TEST( OneDevRegionNonRect );
CPPUNIT_TEST( OneDevRegionAndReset);
CPPUNIT_TEST( OneDevRegionAndEmpty );
CPPUNIT_TEST( TwoDevRegionsOverlapping );
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST_SUITE_END();
protected:
wxMemoryDC m_mdc;
wxDECLARE_NO_COPY_CLASS(ClippingBoxTestCaseDC);
};
// For GTK+ 3 wxDC is equivalent to wxGCDC
// and hence doesn't need to be tested individually.
#if !defined(__WXGTK3__)
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( ClippingBoxTestCaseDC );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ClippingBoxTestCaseDC, "ClippingBoxTestCaseDC" );
#endif // !__WXGTK3__
// wxGCDC tests
#if wxUSE_GRAPHICS_CONTEXT
class ClippingBoxTestCaseGCDC : public ClippingBoxTestCaseDC
{
public:
ClippingBoxTestCaseGCDC()
{
m_gcdc = new wxGCDC(m_mdc);
m_dc = m_gcdc;
}
virtual ~ClippingBoxTestCaseGCDC()
{
delete m_gcdc;
}
virtual void setUp() wxOVERRIDE
{
CPPUNIT_ASSERT_MESSAGE("Invalid wxGCDC", m_gcdc);
wxGraphicsContext* ctx = m_gcdc->GetGraphicsContext();
ctx->SetAntialiasMode(wxANTIALIAS_NONE);
ctx->DisableOffset();
m_gcdc->DestroyClippingRegion();
wxBrush bgBrush(s_bgColour, wxBRUSHSTYLE_SOLID);
m_gcdc->SetBackground(bgBrush);
m_gcdc->Clear();
}
virtual wxDC* GetDC(wxMemoryDC* dc) wxOVERRIDE
{
wxGraphicsRenderer* rend = m_gcdc->GetGraphicsContext()->GetRenderer();
wxGraphicsContext* ctx = rend->CreateContext(*dc);
ctx->SetAntialiasMode(wxANTIALIAS_NONE);
ctx->DisableOffset();
return new wxGCDC(ctx);
}
protected:
virtual void FlushDC() wxOVERRIDE
{
m_gcdc->GetGraphicsContext()->Flush();
}
private:
CPPUNIT_TEST_SUITE( ClippingBoxTestCaseGCDC );
CPPUNIT_TEST( InitialState );
CPPUNIT_TEST( InitialStateWithTransformedDC );
CPPUNIT_TEST( OneRegion );
CPPUNIT_TEST( OneLargeRegion );
CPPUNIT_TEST( OneOuterRegion );
CPPUNIT_TEST( OneRegionNegDim );
CPPUNIT_TEST( OneRegionAndReset );
CPPUNIT_TEST( OneRegionAndEmpty );
CPPUNIT_TEST( OneRegionWithTransformedDC );
CPPUNIT_TEST( TwoRegionsOverlapping );
CPPUNIT_TEST( TwoRegionsOverlappingNegDim );
CPPUNIT_TEST( TwoRegionsNonOverlapping );
CPPUNIT_TEST( TwoRegionsNonOverlappingNegDim );
CPPUNIT_TEST( OneDevRegion);
CPPUNIT_TEST( OneLargeDevRegion );
CPPUNIT_TEST( OneOuterDevRegion );
CPPUNIT_TEST( OneDevRegionNegDim );
CPPUNIT_TEST( OneDevRegionNonRect );
CPPUNIT_TEST( OneDevRegionAndReset);
CPPUNIT_TEST( OneDevRegionAndEmpty );
CPPUNIT_TEST( TwoDevRegionsOverlapping );
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST_SUITE_END();
protected:
wxGCDC* m_gcdc;
wxDECLARE_NO_COPY_CLASS(ClippingBoxTestCaseGCDC);
};
// For MSW we have individual test cases for each graphics renderer
// so we don't need to test wxGCDC with default renderer.
#ifndef __WXMSW__
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( ClippingBoxTestCaseGCDC );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ClippingBoxTestCaseGCDC, "ClippingBoxTestCaseGCDC" );
#endif // !__WXMSW__
#ifdef __WXMSW__
// GDI+ and Direct2D are available only under MSW.
#if wxUSE_GRAPHICS_GDIPLUS
class ClippingBoxTestCaseGDIPlus : public ClippingBoxTestCaseGCDC
{
public:
ClippingBoxTestCaseGDIPlus()
{
wxGraphicsRenderer* rend = wxGraphicsRenderer::GetGDIPlusRenderer();
wxGraphicsContext* ctx = rend->CreateContext(m_mdc);
m_gcdc->SetGraphicsContext(ctx);
}
virtual ~ClippingBoxTestCaseGDIPlus() {}
private:
CPPUNIT_TEST_SUITE( ClippingBoxTestCaseGDIPlus );
CPPUNIT_TEST( InitialState );
CPPUNIT_TEST( InitialStateWithTransformedDC );
CPPUNIT_TEST( OneRegion );
CPPUNIT_TEST( OneLargeRegion );
CPPUNIT_TEST( OneOuterRegion );
CPPUNIT_TEST( OneRegionNegDim );
CPPUNIT_TEST( OneRegionAndReset );
CPPUNIT_TEST( OneRegionAndEmpty );
CPPUNIT_TEST( OneRegionWithTransformedDC );
CPPUNIT_TEST( TwoRegionsOverlapping );
CPPUNIT_TEST( TwoRegionsOverlappingNegDim );
CPPUNIT_TEST( TwoRegionsNonOverlapping );
CPPUNIT_TEST( TwoRegionsNonOverlappingNegDim );
CPPUNIT_TEST( OneDevRegion);
CPPUNIT_TEST( OneLargeDevRegion );
CPPUNIT_TEST( OneOuterDevRegion );
CPPUNIT_TEST( OneDevRegionNegDim );
CPPUNIT_TEST( OneDevRegionNonRect );
CPPUNIT_TEST( OneDevRegionAndReset);
CPPUNIT_TEST( OneDevRegionAndEmpty );
CPPUNIT_TEST( TwoDevRegionsOverlapping );
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST_SUITE_END();
protected:
wxDECLARE_NO_COPY_CLASS(ClippingBoxTestCaseGDIPlus);
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( ClippingBoxTestCaseGDIPlus );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ClippingBoxTestCaseGDIPlus, "ClippingBoxTestCaseGDIPlus" );
#endif // wxUSE_GRAPHICS_GDIPLUS
#if wxUSE_GRAPHICS_DIRECT2D
class ClippingBoxTestCaseDirect2D : public ClippingBoxTestCaseGCDC
{
public:
ClippingBoxTestCaseDirect2D()
{
wxGraphicsRenderer* rend = wxGraphicsRenderer::GetDirect2DRenderer();
wxGraphicsContext* ctx = rend->CreateContext(m_mdc);
m_gcdc->SetGraphicsContext(ctx);
}
virtual ~ClippingBoxTestCaseDirect2D() {}
virtual void FlushDC()
{
// Apparently, flushing native Direct2D renderer
// is not enough to update underlying DC (bitmap)
// and therefore we have to destroy the renderer
// to do so.
ClippingBoxTestCaseGCDC::FlushDC();
m_gcdc->SetGraphicsContext(NULL);
}
private:
CPPUNIT_TEST_SUITE( ClippingBoxTestCaseDirect2D );
CPPUNIT_TEST( InitialState );
CPPUNIT_TEST( InitialStateWithTransformedDC );
CPPUNIT_TEST( OneRegion );
CPPUNIT_TEST( OneLargeRegion );
CPPUNIT_TEST( OneOuterRegion );
CPPUNIT_TEST( OneRegionNegDim );
CPPUNIT_TEST( OneRegionAndReset );
CPPUNIT_TEST( OneRegionAndEmpty );
CPPUNIT_TEST( OneRegionWithTransformedDC );
CPPUNIT_TEST( TwoRegionsOverlapping );
CPPUNIT_TEST( TwoRegionsOverlappingNegDim );
CPPUNIT_TEST( TwoRegionsNonOverlapping );
CPPUNIT_TEST( TwoRegionsNonOverlappingNegDim );
CPPUNIT_TEST( OneDevRegion);
CPPUNIT_TEST( OneLargeDevRegion );
CPPUNIT_TEST( OneOuterDevRegion );
CPPUNIT_TEST( OneDevRegionNegDim );
CPPUNIT_TEST( OneDevRegionNonRect );
CPPUNIT_TEST( OneDevRegionAndReset);
CPPUNIT_TEST( OneDevRegionAndEmpty );
CPPUNIT_TEST( TwoDevRegionsOverlapping );
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST_SUITE_END();
protected:
wxDECLARE_NO_COPY_CLASS(ClippingBoxTestCaseDirect2D);
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( ClippingBoxTestCaseDirect2D );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ClippingBoxTestCaseDirect2D, "ClippingBoxTestCaseDirect2D" );
#endif // wxUSE_GRAPHICS_DIRECT2D
#endif // __WXMSW__
#if wxUSE_CAIRO
class ClippingBoxTestCaseCairo : public ClippingBoxTestCaseGCDC
{
public:
ClippingBoxTestCaseCairo()
{
wxGraphicsRenderer* rend = wxGraphicsRenderer::GetCairoRenderer();
wxGraphicsContext* ctx = rend->CreateContext(m_mdc);
m_gcdc->SetGraphicsContext(ctx);
}
virtual ~ClippingBoxTestCaseCairo() {}
private:
CPPUNIT_TEST_SUITE( ClippingBoxTestCaseCairo );
CPPUNIT_TEST( InitialState );
CPPUNIT_TEST( InitialStateWithTransformedDC );
CPPUNIT_TEST( OneRegion );
CPPUNIT_TEST( OneLargeRegion );
CPPUNIT_TEST( OneOuterRegion );
CPPUNIT_TEST( OneRegionNegDim );
CPPUNIT_TEST( OneRegionAndReset );
CPPUNIT_TEST( OneRegionAndEmpty );
CPPUNIT_TEST( OneRegionWithTransformedDC );
CPPUNIT_TEST( TwoRegionsOverlapping );
CPPUNIT_TEST( TwoRegionsOverlappingNegDim );
CPPUNIT_TEST( TwoRegionsNonOverlapping );
CPPUNIT_TEST( TwoRegionsNonOverlappingNegDim );
CPPUNIT_TEST( OneDevRegion);
CPPUNIT_TEST( OneLargeDevRegion );
CPPUNIT_TEST( OneOuterDevRegion );
CPPUNIT_TEST( OneDevRegionNegDim );
CPPUNIT_TEST( OneDevRegionNonRect );
CPPUNIT_TEST( OneDevRegionAndReset);
CPPUNIT_TEST( OneDevRegionAndEmpty );
CPPUNIT_TEST( TwoDevRegionsOverlapping );
CPPUNIT_TEST( TwoDevRegionsOverlappingNegDim);
CPPUNIT_TEST( TwoDevRegionsNonOverlapping );
CPPUNIT_TEST( TwoDevRegionsNonOverlappingNegDim );
CPPUNIT_TEST_SUITE_END();
protected:
wxDECLARE_NO_COPY_CLASS(ClippingBoxTestCaseCairo);
};
// register in the unnamed registry so that these tests are run by default
CPPUNIT_TEST_SUITE_REGISTRATION( ClippingBoxTestCaseCairo );
// also include in it's own registry so that these tests can be run alone
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ClippingBoxTestCaseCairo, "ClippingBoxTestCaseCairo" );
#endif // wxUSE_CAIRO
#endif // wxUSE_GRAPHICS_CONTEXT
// Helper class to hold rectangle
// which size is guaranteed to be >= 0
class wxClipRect : public wxRect
{
public:
wxClipRect(int xx, int yy, int w, int h)
{
if ( w < 0 )
{
w = -w;
xx -= (w - 1);
}
if ( h < 0 )
{
h = -h;
yy -= (h - 1);
}
x = xx;
y = yy;
width = w;
height = h;
}
};
// ===== Implementation =====
static bool inline IsCoordEqual(int pos1, int pos2, int posTolerance = 0)
{
return abs(pos1 - pos2) <= posTolerance;
}
void ClippingBoxTestCaseBase::CheckBox(int x, int y, int width, int height,
const wxBitmap& bmpRef, int posTolerance)
{
// Check clipping box boundaries.
int clipX, clipY, clipW, clipH;
m_dc->GetClippingBox(&clipX, &clipY, &clipW, &clipH);
wxString msgPos;
if ( !IsCoordEqual(x, clipX, posTolerance) ||
!IsCoordEqual(y, clipY, posTolerance) )
{
msgPos =
wxString::Format(wxS("Invalid position: Actual: (%i, %i) Expected: (%i, %i)"),
clipX, clipY, x, y);
}
wxString msgDim;
if ( !IsCoordEqual(x + width, clipX + clipW, posTolerance) ||
!IsCoordEqual(y + height, clipY + clipH, posTolerance) )
{
msgDim =
wxString::Format(wxS("Invalid dimension: Actual: %i x %i Expected: %i x %i"),
clipW, clipH, width, height);
}
wxString msg;
if ( !msgPos.empty() )
{
msg = msgPos;
if ( !msgDim.empty() )
{
msg += wxS("\n- ");
msg += msgDim;
}
}
else if ( !msgDim.empty() )
{
msg = msgDim;
}
if( !msg.empty() )
{
wxCharBuffer buffer = msg.ToUTF8();
CPPUNIT_FAIL( buffer.data() );
}
// We will examine pixels directly in the underlying bitmap
// so we need to get device coordinates of examined area.
x = m_dc->LogicalToDeviceX(x);
y = m_dc->LogicalToDeviceY(y);
width = m_dc->LogicalToDeviceXRel(width);
height = m_dc->LogicalToDeviceYRel(height);
// Update wxDC contents.
FlushDC();
#if wxUSE_IMAGE
// For some renderers it's not possible to get pixels
// value from wxDC so we would have to examine pixels
// in the underlying bitmap.
wxImage img = m_bmp.ConvertToImage();
// If reference bitmap is given then it has to be
// compared with current bitmap.
if ( bmpRef.IsOk() )
{
wxImage imgRef = bmpRef.ConvertToImage();
// Figures created by clipping and drawing procedures
// can be slightly different (shifted by few pixels) due
// to the different algorithms they can use so we need
// to perform a "fuzzy" comparison of the images,
// tolerating some drift of the pixels.
if ( !CompareImageFuzzy(img, imgRef, posTolerance) )
CPPUNIT_FAIL( "Invalid shape of the clipping region" );
return;
}
// If no reference bitmap is given then rectangular
// clipping region is assumed and we check whether
// diagonal corners of the clipping box are actually
// drawn at the edge of the clipping region.
// Rectangular clipping region can be checked
// only with exact pixel comparison.
if ( posTolerance != 0 )
return;
// Check area near the top-left corner
int ymin = y-1;
int xmin = x-1;
int ymax = y+1;
int xmax = x+1;
ymin = wxMin(wxMax(ymin, 0), s_dcSize.GetHeight()-1);
xmin = wxMin(wxMax(xmin, 0), s_dcSize.GetWidth()-1);
ymax = wxMin(wxMax(ymax, 0), s_dcSize.GetHeight()-1);
xmax = wxMin(wxMax(xmax, 0), s_dcSize.GetWidth()-1);
for( int py = ymin; py <= ymax; py++ )
for( int px = xmin; px <= xmax; px++ )
{
wxColour c;
unsigned char r = img.GetRed(px, py);
unsigned char g = img.GetGreen(px, py);
unsigned char b = img.GetBlue(px, py);
c.Set(r, g, b);
wxString msgColour;
if ( px >= x && px <= x + (width-1) &&
py >= y && py <= y + (height-1) )
{
// Pixel inside the box.
if ( c != s_fgColour )
{
msgColour =
wxString::Format(wxS("Invalid colour drawn at (%i, %i): Actual: %s Expected: %s"),
px, py, c.GetAsString().mbc_str(), s_fgColour.GetAsString().mbc_str());
}
}
else
{
// Pixel outside the box.
if ( c != s_bgColour )
{
msgColour =
wxString::Format(wxS("Invalid colour drawn at (%i, %i): Actual: %s Expected: %s"),
px, py, c.GetAsString().mbc_str(), s_bgColour.GetAsString().mbc_str());
}
}
if ( !msgColour.empty() )
{
if ( !msg.empty() )
{
msg += wxS("\n- ");
msg += msgColour;
}
else
{
msg = msgColour;
}
}
}
// Check area near the bottom-right corner
ymin = y+(height-1)-1;
xmin = x+(width-1)-1;
ymax = y+(height-1)+1;
xmax = x+(width-1)+1;
ymin = wxMin(wxMax(ymin, 0), s_dcSize.GetHeight()-1);
xmin = wxMin(wxMax(xmin, 0), s_dcSize.GetWidth()-1);
ymax = wxMin(wxMax(ymax, 0), s_dcSize.GetHeight()-1);
xmax = wxMin(wxMax(ymax, 0), s_dcSize.GetWidth()-1);
for( int py = ymin; py <= ymax; py++ )
for( int px = xmin; px <= xmax; px++ )
{
wxColour c;
unsigned char r = img.GetRed(px, py);
unsigned char g = img.GetGreen(px, py);
unsigned char b = img.GetBlue(px, py);
c.Set(r, g, b);
wxString msgColour;
if ( px >= x && px <= x + (width-1) &&
py >= y && py <= y + (height-1) )
{
// Pixel inside the box.
if ( c != s_fgColour )
{
msgColour =
wxString::Format(wxS("Invalid colour drawn at (%i, %i): Actual: %s Expected: %s"),
px, py, c.GetAsString().mbc_str(), s_fgColour.GetAsString().mbc_str());
}
}
else
{
// Pixel outside the box.
if ( c != s_bgColour )
{
msgColour =
wxString::Format(wxS("Invalid colour drawn at (%i, %i): Actual: %s Expected: %s"),
px, py, c.GetAsString().mbc_str(), s_bgColour.GetAsString().mbc_str());
}
}
if ( !msgColour.empty() )
{
if ( !msg.empty() )
{
msg += wxS("\n- ");
msg += msgColour;
}
else
{
msg = msgColour;
}
}
}
if( !msg.empty() )
{
wxCharBuffer buffer = msg.ToUTF8();
CPPUNIT_FAIL( buffer.data() );
}
#endif // wxUSE_IMAGE
}
// Actual tests
void ClippingBoxTestCaseBase::InitialState()
{
// Initial clipping box should be the same as the entire DC surface.
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
}
void ClippingBoxTestCaseBase::InitialStateWithTransformedDC()
{
// Initial clipping box with transformed DC.
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(0),
m_dc->DeviceToLogicalY(0),
m_dc->DeviceToLogicalXRel(s_dcSize.GetWidth()),
m_dc->DeviceToLogicalYRel(s_dcSize.GetHeight()));
}
void ClippingBoxTestCaseBase::OneRegion()
{
// Setting one clipping region inside DC area.
const int x = 10;
const int y = 20;
const int w = 80;
const int h = 75;
m_dc->SetClippingRegion(x, y, w, h);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(x, y, w, h);
}
void ClippingBoxTestCaseBase::OneLargeRegion()
{
// Setting one clipping region larger then DC surface.
// Final clipping box should be limited to the DC extents.
m_dc->SetClippingRegion(-10, -20,
s_dcSize.GetWidth()+30, s_dcSize.GetHeight()+50);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
}
void ClippingBoxTestCaseBase::OneOuterRegion()
{
// Setting one clipping region entirely outside DC surface.
// Final clipping box should be empty.
m_dc->SetClippingRegion(-100, -80, 20, 40);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::OneRegionNegDim()
{
// Setting one clipping region with negative sizes values.
// Final clipping box should have standard positive size values.
const int x = 10;
const int y = 20;
const int w = -80;
const int h = -75;
wxClipRect r1(x, y, w, h);
wxRect r2(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
wxRect r = r1.Intersect(r2);
wxASSERT( !r.IsEmpty() );
m_dc->SetClippingRegion(x, y, w, h);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(r.GetLeft(),
r.GetTop(),
r.GetWidth(),
r.GetHeight());
}
void ClippingBoxTestCaseBase::OneRegionAndReset()
{
// Setting one clipping region and next destroy it.
// Final clipping box should be the same as DC surface.
m_dc->SetClippingRegion(10, 20, 80, 75);
m_dc->DestroyClippingRegion();
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
}
void ClippingBoxTestCaseBase::OneRegionAndEmpty()
{
// Setting one clipping region and next an empty box.
// Final clipping box should empty.
m_dc->SetClippingRegion(10, 20, 80, 75);
m_dc->SetClippingRegion(0, 0, 0, 0);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::OneRegionWithTransformedDC()
{
// Setting one clipping region inside DC area
// with applied some transformations.
wxRect r1(-10, -20, 80, 75);
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
m_dc->SetClippingRegion(r1);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
wxRect r2(m_dc->DeviceToLogicalX(0),
m_dc->DeviceToLogicalY(0),
m_dc->DeviceToLogicalXRel(s_dcSize.GetWidth()),
m_dc->DeviceToLogicalYRel(s_dcSize.GetHeight()));
wxRect r = r1.Intersect(r2);
wxASSERT( !r.IsEmpty() );
CheckBox(r.GetLeft(),
r.GetTop(),
r.GetWidth(),
r.GetHeight());
}
void ClippingBoxTestCaseBase::TwoRegionsOverlapping()
{
// Setting one clipping region and next another region (partially overlapping).
// Final clipping box should be an intersection of these two boxes.
wxRect r1(10, 20, 80, 75);
wxRect r2(50, 60, 50, 40);
wxRect r = r1.Intersect(r2);
wxASSERT( !r.IsEmpty() );
m_dc->SetClippingRegion(r1);
m_dc->SetClippingRegion(r2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(r.GetLeft(),
r.GetTop(),
r.GetWidth(),
r.GetHeight());
}
void ClippingBoxTestCaseBase::TwoRegionsOverlappingNegDim()
{
// Setting one clipping region with negative size values
// and next another region (partially overlapping).
// Final clipping box should be an intersection of these two boxes
// with positive size values.
const int x1 = 90;
const int y1 = 95;
const int w1 = -80;
const int h1 = -75;
const int x2 = 50;
const int y2 = 60;
const int w2 = 50;
const int h2 = 40;
wxClipRect r1(x1, y1, w1, h1);
wxRect r2(x2, y2, w2, h2);
wxRect r = r1.Intersect(r2);
m_dc->SetClippingRegion(x1, y1, w1, h1);
m_dc->SetClippingRegion(x2, y2, w2, h2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(r.GetLeft(),
r.GetTop(),
r.GetWidth(),
r.GetHeight());
}
void ClippingBoxTestCaseBase::TwoRegionsNonOverlapping()
{
// Setting one clipping region and next another rwgion (non-overlapping).
// Final clipping box should be empty.
wxRect r1(10, 20, 30, 30);
wxRect r2(50, 60, 50, 40);
wxASSERT( !r1.Intersects(r2) );
m_dc->SetClippingRegion(r1);
m_dc->SetClippingRegion(r2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::TwoRegionsNonOverlappingNegDim()
{
// Setting one clipping region with negative size values
// and next another region (non-overlapping).
// Final clipping box should be empty.
const int x1 = 10;
const int y1 = 20;
const int w1 = -80;
const int h1 = -75;
const int x2 = 50;
const int y2 = 60;
const int w2 = 50;
const int h2 = 40;
wxClipRect r1(x1, y1, w1, h1);
wxRect r2(x2, y2, w2, h2);
wxASSERT( !r1.Intersects(r2) );
m_dc->SetClippingRegion(x1, y1, w1, h1);
m_dc->SetClippingRegion(x2, y2, w2, h2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::OneDevRegion()
{
// Setting one clipping region in device coordinates
// inside transformed DC area.
const int x = 10;
const int y = 21;
const int w = 80;
const int h = 75;
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg(x, y, w, h);
m_dc->SetDeviceClippingRegion(reg);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(x),
m_dc->DeviceToLogicalY(y),
m_dc->DeviceToLogicalXRel(w),
m_dc->DeviceToLogicalYRel(h));
}
void ClippingBoxTestCaseBase::OneLargeDevRegion()
{
// Setting one clipping region in device coordinates larger
// then transformed DC surface.
// Final clipping box should be limited to the DC extents.
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg(-10, -20, s_dcSize.GetWidth()+30, s_dcSize.GetHeight()+50);
m_dc->SetDeviceClippingRegion(reg);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(0),
m_dc->DeviceToLogicalY(0),
m_dc->DeviceToLogicalXRel(s_dcSize.GetWidth()),
m_dc->DeviceToLogicalYRel(s_dcSize.GetHeight()));
}
void ClippingBoxTestCaseBase::OneOuterDevRegion()
{
// Setting one clipping region in device coordinates
// entirely outside transformed DC surface.
// Final clipping box should be empty.
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg(200, 80, 20, 40);
m_dc->SetDeviceClippingRegion(reg);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::OneDevRegionNegDim()
{
// Setting one clipping region in device coordinates
// with negative sizes values.
// Final clipping box should have standard positive size values.
const int x = 19;
const int y = 23;
const int w = -80;
const int h = -75;
wxClipRect r1(x, y, w, h);
wxRect r2(0, 0, s_dcSize.GetWidth(), s_dcSize.GetHeight());
wxRect r = r1.Intersect(r2);
wxASSERT( !r.IsEmpty() );
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg(x, y, w, h);
m_dc->SetDeviceClippingRegion(reg);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(r.GetLeft()),
m_dc->DeviceToLogicalY(r.GetTop()),
m_dc->DeviceToLogicalXRel(r.GetWidth()),
m_dc->DeviceToLogicalYRel(r.GetHeight()));
}
void ClippingBoxTestCaseBase::OneDevRegionNonRect()
{
// Setting one triangular clipping region in device coordinates.
const wxPoint poly[3] =
{
wxPoint(3, 5),
wxPoint(68, 18),
wxPoint(40, 72)
};
// Expected clipping box in device coordinates.
const int clipX = 4;
const int clipY = 6;
const int clipW = 64;
const int clipH = 66;
// Draw image with reference triangle.
wxBitmap bmpRef(s_dcSize);
wxMemoryDC* memDC = new wxMemoryDC(bmpRef);
wxDC* dcRef = GetDC(memDC);
dcRef->SetBackground(wxBrush(s_bgColour, wxBRUSHSTYLE_SOLID));
dcRef->Clear();
dcRef->SetBrush(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
dcRef->SetPen(wxPen(s_fgColour));
dcRef->DrawPolygon(WXSIZEOF(poly), poly);
delete dcRef;
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion r(WXSIZEOF(poly), poly);
m_dc->SetDeviceClippingRegion(r);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
// Check clipping box parameters and compare
// filled in clipping region with reference triangle.
// Triangles created by clipping and drawing procedures
// can be slightly different (shifted by few pixels) due
// to the different algorithms used for different operations
// so we need to perform a "fuzzy" comparison of the images,
// tolerating some drift of the pixels.
CheckBox(m_dc->DeviceToLogicalX(clipX),
m_dc->DeviceToLogicalY(clipY),
m_dc->DeviceToLogicalXRel(clipW),
m_dc->DeviceToLogicalYRel(clipH),
bmpRef, 1);
}
void ClippingBoxTestCaseBase::OneDevRegionAndReset()
{
// Setting one clipping region in device coordinates
// and next destroy it.
// Final clipping box should be the same as DC surface.
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg(10, 20, 80, 75);
m_dc->SetDeviceClippingRegion(reg);
m_dc->DestroyClippingRegion();
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(0),
m_dc->DeviceToLogicalY(0),
m_dc->DeviceToLogicalXRel(s_dcSize.GetWidth()),
m_dc->DeviceToLogicalYRel(s_dcSize.GetHeight()));
}
void ClippingBoxTestCaseBase::OneDevRegionAndEmpty()
{
// Setting one clipping region in device coordinates
// and next an empty region.
// Final clipping box should empty.
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg1(10, 20, 80, 75);
m_dc->SetDeviceClippingRegion(reg1);
wxRegion reg2(0, 0, 0, 0);
m_dc->SetDeviceClippingRegion(reg2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::TwoDevRegionsOverlapping()
{
// Setting one clipping region in device coordinates
// and next another region in device coordinates (partially overlapping).
// Final clipping box should be an intersection of these two regions.
wxRect r1(30, 39, 40, 30);
wxRect r2(60, 51, 40, 30);
wxRect r = r1.Intersect(r2);
wxASSERT( !r.IsEmpty() );
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg1(r1);
m_dc->SetDeviceClippingRegion(reg1);
wxRegion reg2(r2);
m_dc->SetDeviceClippingRegion(reg2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(r.GetLeft()),
m_dc->DeviceToLogicalY(r.GetTop()),
m_dc->DeviceToLogicalXRel(r.GetWidth()),
m_dc->DeviceToLogicalYRel(r.GetHeight()));
}
void ClippingBoxTestCaseBase::TwoDevRegionsOverlappingNegDim()
{
// Setting one clipping region in device coordinates with negative size values
// and next another region in device coordinates (partially overlapping).
// Final clipping box should be an intersection of these two regions
// with positive size values.
const int x1 = 31;
const int y1 = 20;
const int w1 = -80;
const int h1 = -75;
const int x2 = 20;
const int y2 = 6;
const int w2 = 40;
const int h2 = 30;
wxClipRect r1(x1, y1, w1, h1);
wxRect r2(x2, y2, w2, h2);
wxRect r = r1.Intersect(r2);
wxASSERT( !r.IsEmpty() );
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg1(x1, y1, w1, h1);
m_dc->SetDeviceClippingRegion(reg1);
wxRegion reg2(x2, y2, w2, h2);
m_dc->SetDeviceClippingRegion(reg2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(m_dc->DeviceToLogicalX(r.GetLeft()),
m_dc->DeviceToLogicalY(r.GetTop()),
m_dc->DeviceToLogicalXRel(r.GetWidth()),
m_dc->DeviceToLogicalYRel(r.GetHeight()));
}
void ClippingBoxTestCaseBase::TwoDevRegionsNonOverlapping()
{
// Setting one clipping region in device coordinates
// and next another region in device coordinates (non-overlapping).
// Final clipping box should be empty.
wxRect r1(10, 20, 30, 30);
wxRect r2(50, 60, 50, 40);
wxASSERT( !r1.Intersects(r2) );
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg1(r1);
m_dc->SetDeviceClippingRegion(reg1);
wxRegion reg2(r2);
m_dc->SetDeviceClippingRegion(reg2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
void ClippingBoxTestCaseBase::TwoDevRegionsNonOverlappingNegDim()
{
// Setting one clipping region in device coordinates with negative size values
// and next another region (non-overlapping).
// Final clipping box should be empty.
const int x1 = 10;
const int y1 = 20;
const int w1 = -80;
const int h1 = -75;
const int x2 = 50;
const int y2 = 60;
const int w2 = 50;
const int h2 = 40;
wxClipRect r1(x1, y1, w1, h1);
wxRect r2(x2, y2, w2, h2);
wxASSERT( !r1.Intersects(r2) );
m_dc->SetDeviceOrigin(10, 15);
m_dc->SetUserScale(0.5, 1.5);
m_dc->SetLogicalScale(4.0, 2.0);
m_dc->SetLogicalOrigin(-15, -20);
wxRegion reg1(x1, y1, w1, h1);
m_dc->SetDeviceClippingRegion(reg1);
wxRegion reg2(x2, y2, w2, h2);
m_dc->SetDeviceClippingRegion(reg2);
m_dc->SetBackground(wxBrush(s_fgColour, wxBRUSHSTYLE_SOLID));
m_dc->Clear();
CheckBox(0, 0, 0, 0);
}
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