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d58f9bea72380c30d2bd1a42e3a99e81eae908cd
wxWidgets/tests/image/image.cpp
Vadim Zeitlin d58f9bea72 Rearrange sections in wxImage::Paste unit test 
No real changes, just execute only the tests relevant for the section
being executed instead of always running the code loading PNG images
when running a section not using them at all.

This has the advantages of being a bit faster to execute (and the total
test suite run time does add up) and, more importantly, showing the
right amount of tests when executing a single section: e.g. now it's 1
in the simplest case, as expected, and not 5.

The disadvantage is, of course, slightly more code duplication, but it
doesn't seem a huge problem in practice and making each section code
more self-contained is arguably worth it.

Also, compensate for this somewhat by extracting all XPM definitions at
the function level: those are only initialized once (being static), so
there is no need to duplicate them.

Finally, also call AddHandler() once instead of once per section as
before.
2020-10-06 00:40:59 +02:00

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///////////////////////////////////////////////////////////////////////////////
// Name: tests/image/image.cpp
// Purpose: Test wxImage
// Author: Francesco Montorsi
// Created: 2009-05-31
// Copyright: (c) 2009 Francesco Montorsi
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#include "testprec.h"
#if wxUSE_IMAGE
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#endif // WX_PRECOMP
#include "wx/anidecod.h" // wxImageArray
#include "wx/palette.h"
#include "wx/url.h"
#include "wx/log.h"
#include "wx/mstream.h"
#include "wx/zstream.h"
#include "wx/wfstream.h"
#include "testimage.h"
struct testData {
const char* file;
wxBitmapType type;
unsigned bitDepth;
} g_testfiles[] =
{
{ "horse.ico", wxBITMAP_TYPE_ICO, 4 },
{ "horse.xpm", wxBITMAP_TYPE_XPM, 8 },
{ "horse.png", wxBITMAP_TYPE_PNG, 24 },
{ "horse.ani", wxBITMAP_TYPE_ANI, 24 },
{ "horse.bmp", wxBITMAP_TYPE_BMP, 8 },
{ "horse.cur", wxBITMAP_TYPE_CUR, 1 },
{ "horse.gif", wxBITMAP_TYPE_GIF, 8 },
{ "horse.jpg", wxBITMAP_TYPE_JPEG, 24 },
{ "horse.pcx", wxBITMAP_TYPE_PCX, 8 },
{ "horse.pnm", wxBITMAP_TYPE_PNM, 24 },
{ "horse.tga", wxBITMAP_TYPE_TGA, 8 },
{ "horse.tif", wxBITMAP_TYPE_TIFF, 8 }
};
// ----------------------------------------------------------------------------
// test class
// ----------------------------------------------------------------------------
class ImageTestCase : public CppUnit::TestCase
{
public:
ImageTestCase();
~ImageTestCase();
private:
CPPUNIT_TEST_SUITE( ImageTestCase );
CPPUNIT_TEST( LoadFromSocketStream );
CPPUNIT_TEST( LoadFromZipStream );
CPPUNIT_TEST( LoadFromFile );
CPPUNIT_TEST( SizeImage );
CPPUNIT_TEST( CompareLoadedImage );
CPPUNIT_TEST( CompareSavedImage );
CPPUNIT_TEST( SavePNG );
#if wxUSE_LIBTIFF
CPPUNIT_TEST( SaveTIFF );
#endif // wxUSE_LIBTIFF
CPPUNIT_TEST( ReadCorruptedTGA );
#if wxUSE_GIF
CPPUNIT_TEST( SaveAnimatedGIF );
CPPUNIT_TEST( GIFComment );
#endif // wxUSE_GIF
CPPUNIT_TEST( DibPadding );
CPPUNIT_TEST( BMPFlippingAndRLECompression );
CPPUNIT_TEST( ScaleCompare );
CPPUNIT_TEST_SUITE_END();
void LoadFromSocketStream();
void LoadFromZipStream();
void LoadFromFile();
void SizeImage();
void CompareLoadedImage();
void CompareSavedImage();
void SavePNG();
#if wxUSE_LIBTIFF
void SaveTIFF();
#endif // wxUSE_LIBTIFF
void ReadCorruptedTGA();
#if wxUSE_GIF
void SaveAnimatedGIF();
void GIFComment();
#endif // wxUSE_GIF
void DibPadding();
void BMPFlippingAndRLECompression();
void ScaleCompare();
wxDECLARE_NO_COPY_CLASS(ImageTestCase);
};
CPPUNIT_TEST_SUITE_REGISTRATION( ImageTestCase );
CPPUNIT_TEST_SUITE_NAMED_REGISTRATION( ImageTestCase, "ImageTestCase" );
ImageTestCase::ImageTestCase()
{
wxSocketBase::Initialize();
// the formats we're going to test:
wxImage::AddHandler(new wxICOHandler);
wxImage::AddHandler(new wxXPMHandler);
wxImage::AddHandler(new wxPNGHandler);
wxImage::AddHandler(new wxANIHandler);
wxImage::AddHandler(new wxBMPHandler);
wxImage::AddHandler(new wxCURHandler);
#if wxUSE_GIF
wxImage::AddHandler(new wxGIFHandler);
#endif // wxUSE_GIF
wxImage::AddHandler(new wxJPEGHandler);
wxImage::AddHandler(new wxPCXHandler);
wxImage::AddHandler(new wxPNMHandler);
wxImage::AddHandler(new wxTGAHandler);
#if wxUSE_LIBTIFF
wxImage::AddHandler(new wxTIFFHandler);
#endif // wxUSE_LIBTIFF
}
ImageTestCase::~ImageTestCase()
{
wxSocketBase::Shutdown();
}
void ImageTestCase::LoadFromFile()
{
wxImage img;
for (unsigned int i=0; i<WXSIZEOF(g_testfiles); i++)
CPPUNIT_ASSERT(img.LoadFile(g_testfiles[i].file));
}
void ImageTestCase::LoadFromSocketStream()
{
if (!IsNetworkAvailable()) // implemented in test.cpp
{
wxLogWarning("No network connectivity; skipping the "
"ImageTestCase::LoadFromSocketStream test unit.");
return;
}
struct {
const char* url;
wxBitmapType type;
} testData[] =
{
{ "http://www.wxwidgets.org/assets/img/header-logo.png", wxBITMAP_TYPE_PNG },
{ "http://www.wxwidgets.org/assets/ico/favicon-1.ico", wxBITMAP_TYPE_ICO }
};
for (unsigned int i=0; i<WXSIZEOF(testData); i++)
{
wxURL url(testData[i].url);
WX_ASSERT_EQUAL_MESSAGE
(
("Constructing URL \"%s\" failed.", testData[i].url),
wxURL_NOERR,
url.GetError()
);
wxInputStream *in_stream = url.GetInputStream();
WX_ASSERT_MESSAGE
(
("Opening URL \"%s\" failed.", testData[i].url),
in_stream && in_stream->IsOk()
);
wxImage img;
// NOTE: it's important to inform wxImage about the type of the image being
// loaded otherwise it will try to autodetect the format, but that
// requires a seekable stream!
WX_ASSERT_MESSAGE
(
("Loading image from \"%s\" failed.", testData[i].url),
img.LoadFile(*in_stream, testData[i].type)
);
delete in_stream;
}
}
void ImageTestCase::LoadFromZipStream()
{
for (unsigned int i=0; i<WXSIZEOF(g_testfiles); i++)
{
switch (g_testfiles[i].type)
{
case wxBITMAP_TYPE_XPM:
case wxBITMAP_TYPE_GIF:
case wxBITMAP_TYPE_PCX:
case wxBITMAP_TYPE_TGA:
case wxBITMAP_TYPE_TIFF:
continue; // skip testing those wxImageHandlers which cannot
// load data from non-seekable streams
default:
; // proceed
}
// compress the test file on the fly:
wxMemoryOutputStream memOut;
{
wxFileInputStream file(g_testfiles[i].file);
CPPUNIT_ASSERT(file.IsOk());
wxZlibOutputStream compressFilter(memOut, 5, wxZLIB_GZIP);
CPPUNIT_ASSERT(compressFilter.IsOk());
file.Read(compressFilter);
CPPUNIT_ASSERT(file.GetLastError() == wxSTREAM_EOF);
}
// now fetch the compressed memory to wxImage, decompressing it on the fly; this
// allows us to test loading images from non-seekable streams other than socket streams
wxMemoryInputStream memIn(memOut);
CPPUNIT_ASSERT(memIn.IsOk());
wxZlibInputStream decompressFilter(memIn, wxZLIB_GZIP);
CPPUNIT_ASSERT(decompressFilter.IsOk());
wxImage img;
// NOTE: it's important to inform wxImage about the type of the image being
// loaded otherwise it will try to autodetect the format, but that
// requires a seekable stream!
WX_ASSERT_MESSAGE(("Could not load file type '%d' after it was zipped", g_testfiles[i].type),
img.LoadFile(decompressFilter, g_testfiles[i].type));
}
}
void ImageTestCase::SizeImage()
{
// Test the wxImage::Size() function which takes a rectangle from source and
// places it in a new image at a given position. This test checks, if the
// correct areas are chosen, and clipping is done correctly.
// our test image:
static const char * xpm_orig[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....",
" ++++@@@@.",
" +... @.",
" +.@@++ @.",
" +.@ .+ @.",
".@ +. @.+ ",
".@ ++@@.+ ",
".@ ...+ ",
".@@@@++++ ",
"..... "
};
// the expected results for all tests:
static const char * xpm_l_t[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"... @.BB",
".@@++ @.BB",
".@ .+ @.BB",
" +. @.+ BB",
" ++@@.+ BB",
" ...+ BB",
"@@@++++ BB",
"... BB",
"BBBBBBBBBB",
"BBBBBBBBBB"
};
static const char * xpm_t[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" +... @.",
" +.@@++ @.",
" +.@ .+ @.",
".@ +. @.+ ",
".@ ++@@.+ ",
".@ ...+ ",
".@@@@++++ ",
"..... ",
"BBBBBBBBBB",
"BBBBBBBBBB"
};
static const char * xpm_r_t[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB +... ",
"BB +.@@++ ",
"BB +.@ .+ ",
"BB.@ +. @.",
"BB.@ ++@@.",
"BB.@ ...",
"BB.@@@@+++",
"BB..... ",
"BBBBBBBBBB",
"BBBBBBBBBB"
};
static const char * xpm_l[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....BB",
"+++@@@@.BB",
"... @.BB",
".@@++ @.BB",
".@ .+ @.BB",
" +. @.+ BB",
" ++@@.+ BB",
" ...+ BB",
"@@@++++ BB",
"... BB"
};
static const char * xpm_r[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB ...",
"BB ++++@@@",
"BB +... ",
"BB +.@@++ ",
"BB +.@ .+ ",
"BB.@ +. @.",
"BB.@ ++@@.",
"BB.@ ...",
"BB.@@@@+++",
"BB..... "
};
static const char * xpm_l_b[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBB",
"BBBBBBBBBB",
" .....BB",
"+++@@@@.BB",
"... @.BB",
".@@++ @.BB",
".@ .+ @.BB",
" +. @.+ BB",
" ++@@.+ BB",
" ...+ BB"
};
static const char * xpm_b[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBB",
"BBBBBBBBBB",
" .....",
" ++++@@@@.",
" +... @.",
" +.@@++ @.",
" +.@ .+ @.",
".@ +. @.+ ",
".@ ++@@.+ ",
".@ ...+ "
};
static const char * xpm_r_b[] = {
"10 10 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBB",
"BBBBBBBBBB",
"BB ...",
"BB ++++@@@",
"BB +... ",
"BB +.@@++ ",
"BB +.@ .+ ",
"BB.@ +. @.",
"BB.@ ++@@.",
"BB.@ ..."
};
static const char * xpm_sm[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....",
" ++++@@@",
" +... ",
" +.@@++ ",
" +.@ .+ ",
".@ +. @.",
".@ ++@@.",
".@ ..."
};
static const char * xpm_gt[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....BB",
" ++++@@@@.BB",
" +... @.BB",
" +.@@++ @.BB",
" +.@ .+ @.BB",
".@ +. @.+ BB",
".@ ++@@.+ BB",
".@ ...+ BB",
".@@@@++++ BB",
"..... BB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_l_t[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"... @.BBBB",
".@@++ @.BBBB",
".@ .+ @.BBBB",
" +. @.+ BBBB",
" ++@@.+ BBBB",
" ...+ BBBB",
"@@@++++ BBBB",
"... BBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_l[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....BBBB",
"+++@@@@.BBBB",
"... @.BBBB",
".@@++ @.BBBB",
".@ .+ @.BBBB",
" +. @.+ BBBB",
" ++@@.+ BBBB",
" ...+ BBBB",
"@@@++++ BBBB",
"... BBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_l_b[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
" .....BBBB",
"+++@@@@.BBBB",
"... @.BBBB",
".@@++ @.BBBB",
".@ .+ @.BBBB",
" +. @.+ BBBB",
" ++@@.+ BBBB",
" ...+ BBBB",
"@@@++++ BBBB",
"... BBBB"
};
static const char * xpm_gt_l_bb[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
" .....BBBB",
"+++@@@@.BBBB",
"... @.BBBB",
".@@++ @.BBBB",
".@ .+ @.BBBB",
" +. @.+ BBBB",
" ++@@.+ BBBB",
" ...+ BBBB"
};
static const char * xpm_gt_t[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" +... @.BB",
" +.@@++ @.BB",
" +.@ .+ @.BB",
".@ +. @.+ BB",
".@ ++@@.+ BB",
".@ ...+ BB",
".@@@@++++ BB",
"..... BB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_b[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
" .....BB",
" ++++@@@@.BB",
" +... @.BB",
" +.@@++ @.BB",
" +.@ .+ @.BB",
".@ +. @.+ BB",
".@ ++@@.+ BB",
".@ ...+ BB",
".@@@@++++ BB",
"..... BB"
};
static const char * xpm_gt_bb[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
" .....BB",
" ++++@@@@.BB",
" +... @.BB",
" +.@@++ @.BB",
" +.@ .+ @.BB",
".@ +. @.+ BB",
".@ ++@@.+ BB",
".@ ...+ BB"
};
static const char * xpm_gt_r_t[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB +... @.",
"BB +.@@++ @.",
"BB +.@ .+ @.",
"BB.@ +. @.+ ",
"BB.@ ++@@.+ ",
"BB.@ ...+ ",
"BB.@@@@++++ ",
"BB..... ",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_r[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB .....",
"BB ++++@@@@.",
"BB +... @.",
"BB +.@@++ @.",
"BB +.@ .+ @.",
"BB.@ +. @.+ ",
"BB.@ ++@@.+ ",
"BB.@ ...+ ",
"BB.@@@@++++ ",
"BB..... ",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_r_b[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BB .....",
"BB ++++@@@@.",
"BB +... @.",
"BB +.@@++ @.",
"BB +.@ .+ @.",
"BB.@ +. @.+ ",
"BB.@ ++@@.+ ",
"BB.@ ...+ ",
"BB.@@@@++++ ",
"BB..... "
};
static const char * xpm_gt_r_bb[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BB .....",
"BB ++++@@@@.",
"BB +... @.",
"BB +.@@++ @.",
"BB +.@ .+ @.",
"BB.@ +. @.+ ",
"BB.@ ++@@.+ ",
"BB.@ ...+ "
};
static const char * xpm_gt_rr_t[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBB +... ",
"BBBB +.@@++ ",
"BBBB +.@ .+ ",
"BBBB.@ +. @.",
"BBBB.@ ++@@.",
"BBBB.@ ...",
"BBBB.@@@@+++",
"BBBB..... ",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_rr[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBB ...",
"BBBB ++++@@@",
"BBBB +... ",
"BBBB +.@@++ ",
"BBBB +.@ .+ ",
"BBBB.@ +. @.",
"BBBB.@ ++@@.",
"BBBB.@ ...",
"BBBB.@@@@+++",
"BBBB..... ",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB"
};
static const char * xpm_gt_rr_b[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBB ...",
"BBBB ++++@@@",
"BBBB +... ",
"BBBB +.@@++ ",
"BBBB +.@ .+ ",
"BBBB.@ +. @.",
"BBBB.@ ++@@.",
"BBBB.@ ...",
"BBBB.@@@@+++",
"BBBB..... "
};
static const char * xpm_gt_rr_bb[] = {
"12 12 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBBBBBBBBBB",
"BBBB ...",
"BBBB ++++@@@",
"BBBB +... ",
"BBBB +.@@++ ",
"BBBB +.@ .+ ",
"BBBB.@ +. @.",
"BBBB.@ ++@@.",
"BBBB.@ ..."
};
static const char * xpm_sm_ll_tt[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .+ @.BB",
". @.+ BB",
"+@@.+ BB",
" ...+ BB",
"@++++ BB",
". BB",
"BBBBBBBB",
"BBBBBBBB"
};
static const char * xpm_sm_ll_t[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
". @.BB",
"@++ @.BB",
" .+ @.BB",
". @.+ BB",
"+@@.+ BB",
" ...+ BB",
"@++++ BB",
". BB"
};
static const char * xpm_sm_ll[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....BB",
"+@@@@.BB",
". @.BB",
"@++ @.BB",
" .+ @.BB",
". @.+ BB",
"+@@.+ BB",
" ...+ BB"
};
static const char * xpm_sm_ll_b[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBB",
"BBBBBBBB",
" .....BB",
"+@@@@.BB",
". @.BB",
"@++ @.BB",
" .+ @.BB",
". @.+ BB"
};
static const char * xpm_sm_l_tt[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
".@ .+ @.",
" +. @.+ ",
" ++@@.+ ",
" ...+ ",
"@@@++++ ",
"... ",
"BBBBBBBB",
"BBBBBBBB"
};
static const char * xpm_sm_l_t[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"... @.",
".@@++ @.",
".@ .+ @.",
" +. @.+ ",
" ++@@.+ ",
" ...+ ",
"@@@++++ ",
"... "
};
static const char * xpm_sm_l[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" .....",
"+++@@@@.",
"... @.",
".@@++ @.",
".@ .+ @.",
" +. @.+ ",
" ++@@.+ ",
" ...+ "
};
static const char * xpm_sm_l_b[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBB",
"BBBBBBBB",
" .....",
"+++@@@@.",
"... @.",
".@@++ @.",
".@ .+ @.",
" +. @.+ "
};
static const char * xpm_sm_tt[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" +.@ .+ ",
".@ +. @.",
".@ ++@@.",
".@ ...",
".@@@@+++",
"..... ",
"BBBBBBBB",
"BBBBBBBB"
};
static const char * xpm_sm_t[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
" +... ",
" +.@@++ ",
" +.@ .+ ",
".@ +. @.",
".@ ++@@.",
".@ ...",
".@@@@+++",
"..... "
};
static const char * xpm_sm_b[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBB",
"BBBBBBBB",
" ...",
" ++++@@@",
" +... ",
" +.@@++ ",
" +.@ .+ ",
".@ +. @."
};
static const char * xpm_sm_r_tt[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB +.@ .",
"BB.@ +. ",
"BB.@ ++@",
"BB.@ .",
"BB.@@@@+",
"BB..... ",
"BBBBBBBB",
"BBBBBBBB"
};
static const char * xpm_sm_r_t[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB +... ",
"BB +.@@+",
"BB +.@ .",
"BB.@ +. ",
"BB.@ ++@",
"BB.@ .",
"BB.@@@@+",
"BB..... "
};
static const char * xpm_sm_r[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BB .",
"BB ++++@",
"BB +... ",
"BB +.@@+",
"BB +.@ .",
"BB.@ +. ",
"BB.@ ++@",
"BB.@ ."
};
static const char * xpm_sm_r_b[] = {
"8 8 5 1", "B c Black", " c #00ff00", ". c #0000ff", "+ c #7f7f7f", "@ c #FF0000",
"BBBBBBBB",
"BBBBBBBB",
"BB .",
"BB ++++@",
"BB +... ",
"BB +.@@+",
"BB +.@ .",
"BB.@ +. "
};
// this table defines all tests
struct SizeTestData
{
int w, h, dx, dy; // first parameters for Size()
const char **ref_xpm; // expected result
} sizeTestData[] =
{
{ 10, 10, 0, 0, xpm_orig}, // same size, same position
{ 12, 12, 0, 0, xpm_gt}, // target larger, same position
{ 8, 8, 0, 0, xpm_sm}, // target smaller, same position
{ 10, 10, -2, -2, xpm_l_t}, // same size, move left up
{ 10, 10, -2, 0, xpm_l}, // same size, move left
{ 10, 10, -2, 2, xpm_l_b}, // same size, move left down
{ 10, 10, 0, -2, xpm_t}, // same size, move up
{ 10, 10, 0, 2, xpm_b}, // same size, move down
{ 10, 10, 2, -2, xpm_r_t}, // same size, move right up
{ 10, 10, 2, 0, xpm_r}, // same size, move right
{ 10, 10, 2, 2, xpm_r_b}, // same size, move right down
{ 12, 12, -2, -2, xpm_gt_l_t}, // target larger, move left up
{ 12, 12, -2, 0, xpm_gt_l}, // target larger, move left
{ 12, 12, -2, 2, xpm_gt_l_b}, // target larger, move left down
{ 12, 12, -2, 4, xpm_gt_l_bb}, // target larger, move left down
{ 12, 12, 0, -2, xpm_gt_t}, // target larger, move up
{ 12, 12, 0, 2, xpm_gt_b}, // target larger, move down
{ 12, 12, 0, 4, xpm_gt_bb}, // target larger, move down
{ 12, 12, 2, -2, xpm_gt_r_t}, // target larger, move right up
{ 12, 12, 2, 0, xpm_gt_r}, // target larger, move right
{ 12, 12, 2, 2, xpm_gt_r_b}, // target larger, move right down
{ 12, 12, 2, 4, xpm_gt_r_bb}, // target larger, move right down
{ 12, 12, 4, -2, xpm_gt_rr_t}, // target larger, move right up
{ 12, 12, 4, 0, xpm_gt_rr}, // target larger, move right
{ 12, 12, 4, 2, xpm_gt_rr_b}, // target larger, move right down
{ 12, 12, 4, 4, xpm_gt_rr_bb}, // target larger, move right down
{ 8, 8, -4, -4, xpm_sm_ll_tt}, // target smaller, move left up
{ 8, 8, -4, -2, xpm_sm_ll_t}, // target smaller, move left up
{ 8, 8, -4, 0, xpm_sm_ll}, // target smaller, move left
{ 8, 8, -4, 2, xpm_sm_ll_b}, // target smaller, move left down
{ 8, 8, -2, -4, xpm_sm_l_tt}, // target smaller, move left up
{ 8, 8, -2, -2, xpm_sm_l_t}, // target smaller, move left up
{ 8, 8, -2, 0, xpm_sm_l}, // target smaller, move left
{ 8, 8, -2, 2, xpm_sm_l_b}, // target smaller, move left down
{ 8, 8, 0, -4, xpm_sm_tt}, // target smaller, move up
{ 8, 8, 0, -2, xpm_sm_t}, // target smaller, move up
{ 8, 8, 0, 2, xpm_sm_b}, // target smaller, move down
{ 8, 8, 2, -4, xpm_sm_r_tt}, // target smaller, move right up
{ 8, 8, 2, -2, xpm_sm_r_t}, // target smaller, move right up
{ 8, 8, 2, 0, xpm_sm_r}, // target smaller, move right
{ 8, 8, 2, 2, xpm_sm_r_b}, // target smaller, move right down
};
const wxImage src_img(xpm_orig);
for ( unsigned i = 0; i < WXSIZEOF(sizeTestData); i++ )
{
SizeTestData& st = sizeTestData[i];
wxImage
actual(src_img.Size(wxSize(st.w, st.h), wxPoint(st.dx, st.dy), 0, 0, 0)),
expected(st.ref_xpm);
// to check results with an image viewer uncomment this:
//actual.SaveFile(wxString::Format("imagetest-%02d-actual.png", i), wxBITMAP_TYPE_PNG);
//expected.SaveFile(wxString::Format("imagetest-%02d-exp.png", i), wxBITMAP_TYPE_PNG);
wxINFO_FMT("Resize test #%u: (%d, %d), (%d, %d)",
i, st.w, st.h, st.dx, st.dy);
CHECK_THAT( actual, RGBSameAs(expected) );
}
}
void ImageTestCase::CompareLoadedImage()
{
wxImage expected8("horse.xpm");
CPPUNIT_ASSERT( expected8.IsOk() );
wxImage expected24("horse.png");
CPPUNIT_ASSERT( expected24.IsOk() );
for (size_t i=0; i<WXSIZEOF(g_testfiles); i++)
{
if ( !(g_testfiles[i].bitDepth == 8 || g_testfiles[i].bitDepth == 24)
|| g_testfiles[i].type == wxBITMAP_TYPE_JPEG /*skip lossy JPEG*/)
{
continue;
}
wxImage actual(g_testfiles[i].file);
if ( actual.GetSize() != expected8.GetSize() )
{
continue;
}
wxINFO_FMT("Compare test '%s' for loading", g_testfiles[i].file);
CHECK_THAT( actual,
RGBSameAs(g_testfiles[i].bitDepth == 8 ? expected8
: expected24) );
}
}
enum
{
wxIMAGE_HAVE_ALPHA = (1 << 0),
wxIMAGE_HAVE_PALETTE = (1 << 1)
};
static
void CompareImage(const wxImageHandler& handler, const wxImage& image,
int properties = 0, const wxImage *compareTo = NULL)
{
wxBitmapType type = handler.GetType();
const bool testPalette = (properties & wxIMAGE_HAVE_PALETTE) != 0;
/*
This is getting messy and should probably be transformed into a table
with image format features before it gets hairier.
*/
if ( testPalette
&& ( !(type == wxBITMAP_TYPE_BMP
|| type == wxBITMAP_TYPE_GIF
|| type == wxBITMAP_TYPE_ICO
|| type == wxBITMAP_TYPE_PNG)
|| type == wxBITMAP_TYPE_XPM) )
{
return;
}
const bool testAlpha = (properties & wxIMAGE_HAVE_ALPHA) != 0;
if (testAlpha
&& !(type == wxBITMAP_TYPE_PNG || type == wxBITMAP_TYPE_TGA
|| type == wxBITMAP_TYPE_TIFF) )
{
// don't test images with alpha if this handler doesn't support alpha
return;
}
if (type == wxBITMAP_TYPE_JPEG /* skip lossy JPEG */)
{
return;
}
wxMemoryOutputStream memOut;
if ( !image.SaveFile(memOut, type) )
{
// Unfortunately we can't know if the handler just doesn't support
// saving images, or if it failed to save.
return;
}
wxMemoryInputStream memIn(memOut);
CPPUNIT_ASSERT(memIn.IsOk());
wxImage actual(memIn);
CPPUNIT_ASSERT(actual.IsOk());
const wxImage *expected = compareTo ? compareTo : &image;
unsigned bitsPerPixel = testPalette ? 8 : (testAlpha ? 32 : 24);
wxINFO_FMT("Compare test '%s (%d-bit)' for saving",
handler.GetExtension(), bitsPerPixel);
CHECK_THAT(actual, RGBSameAs(*expected));
#if wxUSE_PALETTE
CPPUNIT_ASSERT(actual.HasPalette()
== (testPalette || type == wxBITMAP_TYPE_XPM));
#endif
CPPUNIT_ASSERT( actual.HasAlpha() == testAlpha);
if (!testAlpha)
{
return;
}
wxINFO_FMT("Compare alpha test '%s' for saving", handler.GetExtension());
CHECK_THAT(actual, RGBSameAs(*expected));
}
static void SetAlpha(wxImage *image)
{
image->SetAlpha();
unsigned char *ptr = image->GetAlpha();
const int width = image->GetWidth();
const int height = image->GetHeight();
for (int y = 0; y < height; ++y)
{
for (int x = 0; x < width; ++x)
{
ptr[y*width + x] = (x*y) & wxIMAGE_ALPHA_OPAQUE;
}
}
}
void ImageTestCase::CompareSavedImage()
{
wxImage expected24("horse.png");
CPPUNIT_ASSERT( expected24.IsOk() );
CPPUNIT_ASSERT( !expected24.HasAlpha() );
wxImage expected8 = expected24.ConvertToGreyscale();
#if wxUSE_PALETTE
unsigned char greys[256];
for (int i = 0; i < 256; ++i)
{
greys[i] = i;
}
wxPalette palette(256, greys, greys, greys);
expected8.SetPalette(palette);
#endif // #if wxUSE_PALETTE
expected8.SetOption(wxIMAGE_OPTION_BMP_FORMAT, wxBMP_8BPP_PALETTE);
// Create an image with alpha based on the loaded image
wxImage expected32(expected24);
SetAlpha(&expected32);
const wxList& list = wxImage::GetHandlers();
for ( wxList::compatibility_iterator node = list.GetFirst();
node; node = node->GetNext() )
{
wxImageHandler *handler = (wxImageHandler *) node->GetData();
#if wxUSE_PALETTE
CompareImage(*handler, expected8, wxIMAGE_HAVE_PALETTE);
#endif
CompareImage(*handler, expected24);
CompareImage(*handler, expected32, wxIMAGE_HAVE_ALPHA);
}
}
void ImageTestCase::SavePNG()
{
wxImage expected24("horse.png");
CPPUNIT_ASSERT( expected24.IsOk() );
#if wxUSE_PALETTE
CPPUNIT_ASSERT( !expected24.HasPalette() );
#endif // #if wxUSE_PALETTE
wxImage expected8 = expected24.ConvertToGreyscale();
/*
horse.png converted to greyscale should be saved without a palette.
*/
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG), expected8);
/*
But if we explicitly ask for trying to save with a palette, it should work.
*/
expected8.SetOption(wxIMAGE_OPTION_PNG_FORMAT, wxPNG_TYPE_PALETTE);
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
expected8, wxIMAGE_HAVE_PALETTE);
CPPUNIT_ASSERT( expected8.LoadFile("horse.gif") );
#if wxUSE_PALETTE
CPPUNIT_ASSERT( expected8.HasPalette() );
#endif // #if wxUSE_PALETTE
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
expected8, wxIMAGE_HAVE_PALETTE);
/*
Add alpha to the image in such a way that there will still be a maximum
of 256 unique RGBA combinations. This should result in a saved
PNG image still being palettised and having alpha.
*/
expected8.SetAlpha();
int x, y;
const int width = expected8.GetWidth();
const int height = expected8.GetHeight();
for (y = 0; y < height; ++y)
{
for (x = 0; x < width; ++x)
{
expected8.SetAlpha(x, y, expected8.GetRed(x, y));
}
}
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
expected8, wxIMAGE_HAVE_ALPHA|wxIMAGE_HAVE_PALETTE);
/*
Now change the alpha of the first pixel so that we can't save palettised
anymore because there will be 256+1 entries which is beyond PNGs limit
of 256 entries.
*/
expected8.SetAlpha(0, 0, 1);
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
expected8, wxIMAGE_HAVE_ALPHA);
/*
Even if we explicitly ask for saving palettised it should not be done.
*/
expected8.SetOption(wxIMAGE_OPTION_PNG_FORMAT, wxPNG_TYPE_PALETTE);
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_PNG),
expected8, wxIMAGE_HAVE_ALPHA);
}
#if wxUSE_LIBTIFF
static void TestTIFFImage(const wxString& option, int value,
const wxImage *compareImage = NULL)
{
wxImage image;
if (compareImage)
{
image = *compareImage;
}
else
{
(void) image.LoadFile("horse.png");
}
CPPUNIT_ASSERT( image.IsOk() );
wxMemoryOutputStream memOut;
image.SetOption(option, value);
CPPUNIT_ASSERT(image.SaveFile(memOut, wxBITMAP_TYPE_TIFF));
wxMemoryInputStream memIn(memOut);
CPPUNIT_ASSERT(memIn.IsOk());
wxImage savedImage(memIn);
CPPUNIT_ASSERT(savedImage.IsOk());
WX_ASSERT_EQUAL_MESSAGE(("While checking for option %s", option),
true, savedImage.HasOption(option));
WX_ASSERT_EQUAL_MESSAGE(("While testing for %s", option),
value, savedImage.GetOptionInt(option));
WX_ASSERT_EQUAL_MESSAGE(("HasAlpha() not equal"), image.HasAlpha(), savedImage.HasAlpha());
}
void ImageTestCase::SaveTIFF()
{
TestTIFFImage(wxIMAGE_OPTION_TIFF_BITSPERSAMPLE, 1);
TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 1);
TestTIFFImage(wxIMAGE_OPTION_TIFF_PHOTOMETRIC, 0/*PHOTOMETRIC_MINISWHITE*/);
TestTIFFImage(wxIMAGE_OPTION_TIFF_PHOTOMETRIC, 1/*PHOTOMETRIC_MINISBLACK*/);
wxImage alphaImage("horse.png");
CPPUNIT_ASSERT( alphaImage.IsOk() );
SetAlpha(&alphaImage);
// RGB with alpha
TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 4, &alphaImage);
// Grey with alpha
TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 2, &alphaImage);
// B/W with alpha
alphaImage.SetOption(wxIMAGE_OPTION_TIFF_BITSPERSAMPLE, 1);
TestTIFFImage(wxIMAGE_OPTION_TIFF_SAMPLESPERPIXEL, 2, &alphaImage);
}
#endif // wxUSE_LIBTIFF
void ImageTestCase::ReadCorruptedTGA()
{
static unsigned char corruptTGA[18+1+3] =
{
0,
0,
10, // RLE compressed image.
0, 0,
0, 0,
0,
0, 0,
0, 0,
1, 0, // Width is 1.
1, 0, // Height is 1.
24, // Bits per pixel.
0,
0xff, // Run length (repeat next pixel 127+1 times).
0xff, 0xff, 0xff // One 24-bit pixel.
};
wxMemoryInputStream memIn(corruptTGA, WXSIZEOF(corruptTGA));
CPPUNIT_ASSERT(memIn.IsOk());
wxImage tgaImage;
CPPUNIT_ASSERT( !tgaImage.LoadFile(memIn) );
/*
Instead of repeating a pixel 127+1 times, now tell it there will
follow 127+1 uncompressed pixels (while we only should have 1 in total).
*/
corruptTGA[18] = 0x7f;
CPPUNIT_ASSERT( !tgaImage.LoadFile(memIn) );
}
#if wxUSE_GIF
void ImageTestCase::SaveAnimatedGIF()
{
#if wxUSE_PALETTE
wxImage image("horse.gif");
CPPUNIT_ASSERT( image.IsOk() );
wxImageArray images;
images.Add(image);
for (int i = 0; i < 4-1; ++i)
{
images.Add( images[i].Rotate90() );
images[i+1].SetPalette(images[0].GetPalette());
}
wxMemoryOutputStream memOut;
CPPUNIT_ASSERT( wxGIFHandler().SaveAnimation(images, &memOut) );
wxGIFHandler handler;
wxMemoryInputStream memIn(memOut);
CPPUNIT_ASSERT(memIn.IsOk());
const int imageCount = handler.GetImageCount(memIn);
CPPUNIT_ASSERT_EQUAL(4, imageCount);
for (int i = 0; i < imageCount; ++i)
{
wxFileOffset pos = memIn.TellI();
CPPUNIT_ASSERT( handler.LoadFile(&image, memIn, true, i) );
memIn.SeekI(pos);
wxINFO_FMT("Compare test for GIF frame number %d failed", i);
CHECK_THAT(image, RGBSameAs(images[i]));
}
#endif // #if wxUSE_PALETTE
}
static void TestGIFComment(const wxString& comment)
{
wxImage image("horse.gif");
image.SetOption(wxIMAGE_OPTION_GIF_COMMENT, comment);
wxMemoryOutputStream memOut;
CPPUNIT_ASSERT(image.SaveFile(memOut, wxBITMAP_TYPE_GIF));
wxMemoryInputStream memIn(memOut);
CPPUNIT_ASSERT( image.LoadFile(memIn) );
CPPUNIT_ASSERT_EQUAL(comment,
image.GetOption(wxIMAGE_OPTION_GIF_COMMENT));
}
void ImageTestCase::GIFComment()
{
// Test reading a comment.
wxImage image("horse.gif");
CPPUNIT_ASSERT_EQUAL(" Imported from GRADATION image: gray",
image.GetOption(wxIMAGE_OPTION_GIF_COMMENT));
// Test writing a comment and reading it back.
TestGIFComment("Giving the GIF a gifted giraffe as a gift");
// Test writing and reading a comment again but with a long comment.
TestGIFComment(wxString(wxT('a'), 256)
+ wxString(wxT('b'), 256)
+ wxString(wxT('c'), 256));
// Test writing comments in an animated GIF and reading them back.
CPPUNIT_ASSERT( image.LoadFile("horse.gif") );
#if wxUSE_PALETTE
wxImageArray images;
int i;
for (i = 0; i < 4; ++i)
{
if (i)
{
images.Add( images[i-1].Rotate90() );
images[i].SetPalette(images[0].GetPalette());
}
else
{
images.Add(image);
}
images[i].SetOption(wxIMAGE_OPTION_GIF_COMMENT,
wxString::Format("GIF comment for frame #%d", i+1));
}
wxMemoryOutputStream memOut;
CPPUNIT_ASSERT( wxGIFHandler().SaveAnimation(images, &memOut) );
wxGIFHandler handler;
wxMemoryInputStream memIn(memOut);
CPPUNIT_ASSERT(memIn.IsOk());
const int imageCount = handler.GetImageCount(memIn);
for (i = 0; i < imageCount; ++i)
{
wxFileOffset pos = memIn.TellI();
CPPUNIT_ASSERT( handler.LoadFile(&image, memIn, true /*verbose?*/, i) );
CPPUNIT_ASSERT_EQUAL(
wxString::Format("GIF comment for frame #%d", i+1),
image.GetOption(wxIMAGE_OPTION_GIF_COMMENT));
memIn.SeekI(pos);
}
#endif //wxUSE_PALETTE
}
#endif // wxUSE_GIF
void ImageTestCase::DibPadding()
{
/*
There used to be an error with calculating the DWORD aligned scan line
pitch for a BMP/ICO resulting in buffer overwrites (with at least MSVC9
Debug this gave a heap corruption assertion when saving the mask of
an ICO). Test for it here.
*/
wxImage image("horse.gif");
CPPUNIT_ASSERT( image.IsOk() );
image = image.Scale(99, 99);
wxMemoryOutputStream memOut;
CPPUNIT_ASSERT( image.SaveFile(memOut, wxBITMAP_TYPE_ICO) );
}
static void CompareBMPImage(const wxString& file1, const wxString& file2)
{
wxImage image1(file1);
CPPUNIT_ASSERT( image1.IsOk() );
wxImage image2(file2);
CPPUNIT_ASSERT( image2.IsOk() );
CompareImage(*wxImage::FindHandler(wxBITMAP_TYPE_BMP), image1, 0, &image2);
}
void ImageTestCase::BMPFlippingAndRLECompression()
{
CompareBMPImage("image/horse_grey.bmp", "image/horse_grey_flipped.bmp");
CompareBMPImage("image/horse_rle8.bmp", "image/horse_grey.bmp");
CompareBMPImage("image/horse_rle8.bmp", "image/horse_rle8_flipped.bmp");
CompareBMPImage("image/horse_rle4.bmp", "image/horse_rle4_flipped.bmp");
}
static int
FindMaxChannelDiff(const wxImage& i1, const wxImage& i2)
{
if ( i1.GetWidth() != i2.GetWidth() )
return false;
if ( i1.GetHeight() != i2.GetHeight() )
return false;
const unsigned char* p1 = i1.GetData();
const unsigned char* p2 = i2.GetData();
const int numBytes = i1.GetWidth()*i1.GetHeight()*3;
int maxDiff = 0;
for ( int n = 0; n < numBytes; n++, p1++, p2++ )
{
const int diff = std::abs(*p1 - *p2);
if ( diff > maxDiff )
maxDiff = diff;
}
return maxDiff;
}
// Note that we accept up to one pixel difference, this happens because of
// different rounding behaviours in different compiler versions
// even under the same architecture, see the example in
// http://thread.gmane.org/gmane.comp.lib.wxwidgets.devel/151149/focus=151154
// The 0 below can be replaced with 1 to generate, instead of comparing with,
// the test files.
#define ASSERT_IMAGE_EQUAL_TO_FILE(image, file) \
if ( 0 ) \
{ \
CPPUNIT_ASSERT_MESSAGE( "Failed to save " file, image.SaveFile(file) ); \
} \
else \
{ \
const wxImage imageFromFile(file); \
if ( imageFromFile.IsOk() ) \
{ \
INFO("Wrong scaled \"" << file << "\" " << Catch::toString(image)); \
CHECK(FindMaxChannelDiff(imageFromFile, image) <= 1); \
} \
else \
{ \
FAIL("Failed to load \"" << file << "\""); \
} \
}
void ImageTestCase::ScaleCompare()
{
wxImage original;
CPPUNIT_ASSERT(original.LoadFile("horse.bmp"));
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale( 50, 50, wxIMAGE_QUALITY_BICUBIC),
"image/horse_bicubic_50x50.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(100, 100, wxIMAGE_QUALITY_BICUBIC),
"image/horse_bicubic_100x100.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(150, 150, wxIMAGE_QUALITY_BICUBIC),
"image/horse_bicubic_150x150.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(300, 300, wxIMAGE_QUALITY_BICUBIC),
"image/horse_bicubic_300x300.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale( 50, 50, wxIMAGE_QUALITY_BOX_AVERAGE),
"image/horse_box_average_50x50.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(100, 100, wxIMAGE_QUALITY_BOX_AVERAGE),
"image/horse_box_average_100x100.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(150, 150, wxIMAGE_QUALITY_BOX_AVERAGE),
"image/horse_box_average_150x150.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(300, 300, wxIMAGE_QUALITY_BOX_AVERAGE),
"image/horse_box_average_300x300.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale( 50, 50, wxIMAGE_QUALITY_BILINEAR),
"image/horse_bilinear_50x50.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(100, 100, wxIMAGE_QUALITY_BILINEAR),
"image/horse_bilinear_100x100.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(150, 150, wxIMAGE_QUALITY_BILINEAR),
"image/horse_bilinear_150x150.png");
ASSERT_IMAGE_EQUAL_TO_FILE(original.Scale(300, 300, wxIMAGE_QUALITY_BILINEAR),
"image/horse_bilinear_300x300.png");
// Test scaling symmetric image
const static char* cross_xpm[] =
{
"9 9 5 1",
" c None",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"w c #FFFFFF",
" r ",
" g ",
" b ",
" w ",
"rgbw wbgr",
" w ",
" b ",
" g ",
" r "
};
wxImage imgCross(cross_xpm);
ASSERT_IMAGE_EQUAL_TO_FILE(imgCross.Scale(256, 256, wxIMAGE_QUALITY_BILINEAR),
"image/cross_bilinear_256x256.png");
ASSERT_IMAGE_EQUAL_TO_FILE(imgCross.Scale(256, 256, wxIMAGE_QUALITY_BICUBIC),
"image/cross_bicubic_256x256.png");
ASSERT_IMAGE_EQUAL_TO_FILE(imgCross.Scale(256, 256, wxIMAGE_QUALITY_BOX_AVERAGE),
"image/cross_box_average_256x256.png");
ASSERT_IMAGE_EQUAL_TO_FILE(imgCross.Scale(256, 256, wxIMAGE_QUALITY_NEAREST),
"image/cross_nearest_neighb_256x256.png");
}
#endif //wxUSE_IMAGE
TEST_CASE("wxImage::Paste", "[image][paste]")
{
const static char* squares_xpm[] =
{
"9 9 7 1",
" c None",
"y c #FFFF00",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"o c #FF6600",
"w c #FFFFFF",
"rrrrwgggg",
"rrrrwgggg",
"rrrrwgggg",
"rrrrwgggg",
"wwwwwwwww",
"bbbbwoooo",
"bbbbwoooo",
"bbbbwoooo",
"bbbbwoooo"
};
const static char* toggle_equal_size_xpm[] =
{
"9 9 2 1",
" c None",
"y c #FFFF00",
"y y y y y",
" y y y y ",
"y y y y y",
" y y y y ",
"y y y y y",
" y y y y ",
"y y y y y",
" y y y y ",
"y y y y y",
};
const static char* transparent_image_xpm[] =
{
"5 5 2 1",
" c None", // Mask
"y c #FFFF00",
" ",
" ",
" ",
" ",
" ",
};
const static char* light_image_xpm[] =
{
"5 5 2 1",
" c None",
"y c #FFFF00",
"yyyyy",
"yyyyy",
"yyyyy",
"yyyyy",
"yyyyy",
};
const static char* black_image_xpm[] =
{
"5 5 2 1",
" c #000000",
"y c None", // Mask
" ",
" ",
" ",
" ",
" ",
};
// Execute AddHandler() just once.
static const bool
registeredHandler = (wxImage::AddHandler(new wxPNGHandler()), true);
SECTION("Paste same size image")
{
wxImage actual(squares_xpm);
wxImage paste(toggle_equal_size_xpm);
wxImage expected(toggle_equal_size_xpm);
actual.Paste(paste, 0, 0);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste larger image")
{
const static char* toggle_larger_size_xpm[] =
{
"13 13 2 1",
" c None",
"y c #FFFF00",
"y y y y y y y",
" y y y y y y ",
"y y y y y y y",
" y y y y y y ",
"y y y y y y y",
" y y y y y y ",
"y y y y y y y",
" y y y y y y ",
"y y y y y y y",
" y y y y y y ",
"y y y y y y y",
" y y y y y y ",
"y y y y y y y",
};
wxImage actual(squares_xpm);
wxImage paste(toggle_larger_size_xpm);
wxImage expected(toggle_equal_size_xpm);
actual.Paste(paste, -2, -2);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste smaller image")
{
const static char* toggle_smaller_size_xpm[] =
{
"5 5 2 1",
" c None",
"y c #FFFF00",
"y y y",
" y y ",
"y y y",
" y y ",
"y y y",
};
const static char* expected_xpm[] =
{
"9 9 7 1",
" c None",
"y c #FFFF00",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"o c #FF6600",
"w c #FFFFFF",
"rrrrwgggg",
"rrrrwgggg",
"rry y ygg",
"rr y y gg",
"wwy y yww",
"bb y y oo",
"bby y yoo",
"bbbbwoooo",
"bbbbwoooo"
};
wxImage actual(squares_xpm);
wxImage paste(toggle_smaller_size_xpm);
wxImage expected(expected_xpm);
actual.Paste(paste, 2, 2);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste beyond top left corner")
{
const static char* expected_xpm[] =
{
"9 9 7 1",
" c None",
"y c #FFFF00",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"o c #FF6600",
"w c #FFFFFF",
"oooowgggg",
"oooowgggg",
"oooowgggg",
"oooowgggg",
"wwwwwwwww",
"bbbbwoooo",
"bbbbwoooo",
"bbbbwoooo",
"bbbbwoooo"
};
wxImage actual(squares_xpm);
wxImage paste(squares_xpm);
wxImage expected(expected_xpm);
actual.Paste(paste, -5, -5);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste beyond top right corner")
{
const static char* expected_xpm[] =
{
"9 9 7 1",
" c None",
"y c #FFFF00",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"o c #FF6600",
"w c #FFFFFF",
"rrrrwbbbb",
"rrrrwbbbb",
"rrrrwbbbb",
"rrrrwbbbb",
"wwwwwwwww",
"bbbbwoooo",
"bbbbwoooo",
"bbbbwoooo",
"bbbbwoooo"
};
wxImage actual(squares_xpm);
wxImage paste(squares_xpm);
wxImage expected(expected_xpm);
actual.Paste(paste, 5, -5);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste beyond bottom right corner")
{
const static char* expected_xpm[] =
{
"9 9 7 1",
" c None",
"y c #FF0000",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"o c #FF6600",
"w c #FFFFFF",
"rrrrwgggg",
"rrrrwgggg",
"rrrrwgggg",
"rrrrwgggg",
"wwwwwwwww",
"bbbbwrrrr",
"bbbbwrrrr",
"bbbbwrrrr",
"bbbbwrrrr"
};
wxImage actual(squares_xpm);
wxImage paste(squares_xpm);
wxImage expected(expected_xpm);
actual.Paste(paste, 5, 5);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste beyond bottom left corner")
{
const static char* expected_xpm[] =
{
"9 9 7 1",
" c None",
"y c #FFFF00",
"r c #FF0000",
"g c #00FF00",
"b c #0000FF",
"o c #FF6600",
"w c #FFFFFF",
"rrrrwgggg",
"rrrrwgggg",
"rrrrwgggg",
"rrrrwgggg",
"wwwwwwwww",
"ggggwoooo",
"ggggwoooo",
"ggggwoooo",
"ggggwoooo"
};
wxImage actual(squares_xpm);
wxImage paste(squares_xpm);
wxImage expected(expected_xpm);
actual.Paste(paste, -5, 5);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste fully opaque image onto blank image without alpha")
{
const wxImage background("image/paste_input_background.png");
REQUIRE(background.IsOk());
wxImage actual(background.GetSize());
actual.Paste(background, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(background));
CHECK(!actual.HasAlpha());
}
SECTION("Paste fully opaque image onto blank image with alpha")
{
const wxImage background("image/paste_input_background.png");
REQUIRE(background.IsOk());
wxImage actual(background.GetSize());
actual.InitAlpha();
actual.Paste(background, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(background));
CHECK_THAT(actual, CenterAlphaPixelEquals(wxALPHA_OPAQUE));
}
SECTION("Paste fully transparent image")
{
const wxImage background("image/paste_input_background.png");
REQUIRE(background.IsOk());
wxImage actual = background.Copy();
wxImage transparent(actual.GetSize());
transparent.InitAlpha();
memset(transparent.GetAlpha(), 0, transparent.GetWidth() * transparent.GetHeight());
actual.Paste(transparent, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(background));
CHECK_THAT(actual, CenterAlphaPixelEquals(wxALPHA_OPAQUE));
}
SECTION("Paste image with transparent region")
{
wxImage actual("image/paste_input_background.png");
REQUIRE(actual.IsOk());
const wxImage opaque_square("image/paste_input_overlay_transparent_border_opaque_square.png");
REQUIRE(opaque_square.IsOk());
actual.Paste(opaque_square, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(wxImage("image/paste_result_background_plus_overlay_transparent_border_opaque_square.png")));
CHECK_THAT(actual, CenterAlphaPixelEquals(wxALPHA_OPAQUE));
}
SECTION("Paste image with semi transparent region")
{
wxImage actual("image/paste_input_background.png");
REQUIRE(actual.IsOk());
const wxImage transparent_square("image/paste_input_overlay_transparent_border_semitransparent_square.png");
REQUIRE(transparent_square.IsOk());
actual.Paste(transparent_square, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(wxImage("image/paste_result_background_plus_overlay_transparent_border_semitransparent_square.png")));
CHECK_THAT(actual, CenterAlphaPixelEquals(wxALPHA_OPAQUE));
}
SECTION("Paste two semi transparent images on top of background")
{
wxImage actual("image/paste_input_background.png");
REQUIRE(actual.IsOk());
const wxImage transparent_square("image/paste_input_overlay_transparent_border_semitransparent_square.png");
REQUIRE(transparent_square.IsOk());
const wxImage transparent_circle("image/paste_input_overlay_transparent_border_semitransparent_circle.png");
REQUIRE(transparent_circle.IsOk());
actual.Paste(transparent_circle, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
actual.Paste(transparent_square, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSimilarTo(wxImage("image/paste_result_background_plus_circle_plus_square.png"), 1));
CHECK_THAT(actual, CenterAlphaPixelEquals(wxALPHA_OPAQUE));
}
SECTION("Paste two semi transparent images together first, then on top of background")
{
wxImage actual("image/paste_input_background.png");
REQUIRE(actual.IsOk());
const wxImage transparent_square("image/paste_input_overlay_transparent_border_semitransparent_square.png");
REQUIRE(transparent_square.IsOk());
const wxImage transparent_circle("image/paste_input_overlay_transparent_border_semitransparent_circle.png");
REQUIRE(transparent_circle.IsOk());
wxImage circle = transparent_circle.Copy();
circle.Paste(transparent_square, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
actual.Paste(circle, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
// When applied in this order, two times a rounding difference is triggered.
CHECK_THAT(actual, RGBSimilarTo(wxImage("image/paste_result_background_plus_circle_plus_square.png"), 2));
CHECK_THAT(actual, CenterAlphaPixelEquals(wxALPHA_OPAQUE));
}
SECTION("Paste semitransparent image over transparent image")
{
const wxImage transparent_square("image/paste_input_overlay_transparent_border_semitransparent_square.png");
REQUIRE(transparent_square.IsOk());
const wxImage transparent_circle("image/paste_input_overlay_transparent_border_semitransparent_circle.png");
REQUIRE(transparent_circle.IsOk());
wxImage actual(transparent_circle.GetSize());
actual.InitAlpha();
memset(actual.GetAlpha(), 0, actual.GetWidth() * actual.GetHeight());
actual.Paste(transparent_circle, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, CenterAlphaPixelEquals(192));
actual.Paste(transparent_square, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSimilarTo(wxImage("image/paste_result_no_background_square_over_circle.png"), 1));
CHECK_THAT(actual, CenterAlphaPixelEquals(224));
}
SECTION("Paste fully transparent (masked) image over light image") // todo make test case for 'blend with mask'
{
wxImage actual(light_image_xpm);
actual.InitAlpha();
wxImage paste(transparent_image_xpm);
wxImage expected(light_image_xpm);
actual.Paste(paste, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste fully black (masked) image over light image") // todo make test case for 'blend with mask'
{
wxImage actual(light_image_xpm);
actual.InitAlpha();
wxImage paste(black_image_xpm);
wxImage expected(black_image_xpm);
actual.Paste(paste, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, RGBSameAs(expected));
}
SECTION("Paste dark image over light image")
{
wxImage black("image/paste_input_black.png");
wxImage actual("image/paste_input_background.png");
actual.InitAlpha();
actual.Paste(black, 0, 0, wxIMAGE_ALPHA_BLEND_COMPOSE);
CHECK_THAT(actual, CenterAlphaPixelEquals(255));
CHECK_THAT(actual, RGBSameAs(black));
}
SECTION("Paste large image with negative vertical offset")
{
wxImage target(442, 249);
wxImage to_be_pasted(345, 24900);
target.InitAlpha();
target.Paste(to_be_pasted, 48, -12325, wxIMAGE_ALPHA_BLEND_COMPOSE);
}
SECTION("Paste large image with negative horizontal offset")
{
wxImage target(249, 442);
wxImage to_be_pasted(24900, 345);
target.InitAlpha();
target.Paste(to_be_pasted, -12325, 48, wxIMAGE_ALPHA_BLEND_COMPOSE);
}
}
/*
TODO: add lots of more tests to wxImage functions
*/
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