// Purpose: Test wxImage
// Author: Francesco Montorsi
// Created: 2009-05-31
-// RCS-ID: $Id$
// Copyright: (c) 2009 Francesco Montorsi
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
{ "horse.pcx", wxBITMAP_TYPE_PCX, 8 },
{ "horse.pnm", wxBITMAP_TYPE_PNM, 24 },
{ "horse.tga", wxBITMAP_TYPE_TGA, 8 },
- { "horse.tif", wxBITMAP_TYPE_TIF, 8 }
+ { "horse.tif", wxBITMAP_TYPE_TIFF, 8 }
};
CPPUNIT_TEST( CompareLoadedImage );
CPPUNIT_TEST( CompareSavedImage );
CPPUNIT_TEST( SavePNG );
+ CPPUNIT_TEST( SaveTIFF );
CPPUNIT_TEST( SaveAnimatedGIF );
CPPUNIT_TEST( ReadCorruptedTGA );
CPPUNIT_TEST( GIFComment );
CPPUNIT_TEST( DibPadding );
CPPUNIT_TEST( BMPFlippingAndRLECompression );
+ CPPUNIT_TEST( ScaleCompare );
CPPUNIT_TEST_SUITE_END();
void LoadFromSocketStream();
void CompareLoadedImage();
void CompareSavedImage();
void SavePNG();
+ void SaveTIFF();
void SaveAnimatedGIF();
void ReadCorruptedTGA();
void GIFComment();
void DibPadding();
void BMPFlippingAndRLECompression();
+ void ScaleCompare();
DECLARE_NO_COPY_CLASS(ImageTestCase)
};
case wxBITMAP_TYPE_GIF:
case wxBITMAP_TYPE_PCX:
case wxBITMAP_TYPE_TGA:
- case wxBITMAP_TYPE_TIF:
+ case wxBITMAP_TYPE_TIFF:
continue; // skip testing those wxImageHandlers which cannot
// load data from non-seekable streams
const bool testAlpha = (properties & wxIMAGE_HAVE_ALPHA) != 0;
if (testAlpha
- && !(type == wxBITMAP_TYPE_PNG || type == wxBITMAP_TYPE_TGA) )
+ && !(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 */
- || type == wxBITMAP_TYPE_TIF)
+ if (type == wxBITMAP_TYPE_JPEG /* skip lossy JPEG */)
{
- /*
- TIFF is skipped because the memory stream can't be loaded. Libtiff
- looks for a TIFF directory at offset 120008 while the memory
- stream size is only 120008 bytes (when saving as a file
- the file size is 120280 bytes).
- */
return;
}
);
}
+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()
{
// FIXME-VC6: Pre-declare the loop variables for compatibility with
// pre-standard compilers such as MSVC6 that don't implement proper scope
// for the variables declared in the for loops.
- int i, x, y;
+ int i;
wxImage expected24("horse.png");
CPPUNIT_ASSERT( expected24.IsOk() );
// Create an image with alpha based on the loaded image
wxImage expected32(expected24);
- expected32.SetAlpha();
- int width = expected32.GetWidth();
- int height = expected32.GetHeight();
- for (y = 0; y < height; ++y)
- {
- for (x = 0; x < width; ++x)
- {
- expected32.SetAlpha(x, y, (x*y) & wxIMAGE_ALPHA_OPAQUE);
- }
- }
+ SetAlpha(&expected32);
const wxList& list = wxImage::GetHandlers();
for ( wxList::compatibility_iterator node = list.GetFirst();
}
+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);
+}
+
void ImageTestCase::SaveAnimatedGIF()
{
#if wxUSE_PALETTE
CompareBMPImage("image/horse_rle4.bmp", "image/horse_rle4_flipped.bmp");
}
+
+
+#define ASSERT_IMAGE_EQUAL_TO_FILE(image, file) \
+ { \
+ wxImage imageFromFile(file); \
+ CPPUNIT_ASSERT_MESSAGE( "Failed to load " file, imageFromFile.IsOk() ); \
+ CPPUNIT_ASSERT_EQUAL( imageFromFile, image ); \
+ }
+
+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");
+}
+
#endif //wxUSE_IMAGE
projects / wxWidgets.git / blobdiff