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Add tests of converting wxImage to wxBitmap

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This commit is contained in:
Artur Wieczorek
2021-01-18 22:14:42 +01:00
parent 3c28244806
commit 6b572bf694
1 changed files with 189 additions and 0 deletions
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189
tests/graphics/bitmap.cpp
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@@ -41,6 +41,9 @@
CHECK( (int)c1.Blue() == (int)c2.Blue() ); \
CHECK( (int)c1.Alpha() == (int)c2.Alpha() )
#define CHECK_EQUAL_COLOUR_RGB(c1, c2) ASSERT_EQUAL_COLOUR_RGB(c1, c2)
#define CHECK_EQUAL_COLOUR_RGBA(c1, c2) ASSERT_EQUAL_COLOUR_RGBA(c1, c2)
#ifdef __WXMSW__
// Support for iteration over 32 bpp 0RGB bitmaps
typedef wxPixelFormat<unsigned char, 32, 2, 1, 0> wxNative32PixelFormat;
@@ -179,6 +182,192 @@ TEST_CASE("BitmapTestCase::ConvertToImageWithMask", "[bitmap][image][mask]")
}
}
TEST_CASE("BitmapTestCase::FromImage", "[bitmap][image][convertfrom]")
{
const wxColour maskCol(*wxRED);
const wxColour fillCol(*wxGREEN);
SECTION("RGB image without mask")
{
wxImage img(2, 2);
img.SetRGB(0, 0, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(0, 1, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(1, 0, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetRGB(1, 1, fillCol.Red(), fillCol.Green(), fillCol.Blue());
REQUIRE_FALSE(img.HasAlpha());
REQUIRE_FALSE(img.HasMask());
wxBitmap bmp(img);
REQUIRE_FALSE(bmp.HasAlpha());
REQUIRE(bmp.GetMask() == NULL);
REQUIRE(bmp.GetWidth() == img.GetWidth());
REQUIRE(bmp.GetHeight() == img.GetHeight());
wxNativePixelData dataBmp(bmp);
wxNativePixelData::Iterator rowStartBmp(dataBmp);
for ( int y = 0; y < bmp.GetHeight(); ++y )
{
wxNativePixelData::Iterator iBmp = rowStartBmp;
for ( int x = 0; x < bmp.GetWidth(); ++x, ++iBmp )
{
wxColour bmpc(iBmp.Red(), iBmp.Green(), iBmp.Blue());
wxColour imgc(img.GetRed(x, y), img.GetGreen(x, y), img.GetBlue(x, y));
CHECK_EQUAL_COLOUR_RGB(bmpc, imgc);
}
rowStartBmp.OffsetY(dataBmp, 1);
}
}
SECTION("RGB image with mask")
{
wxImage img(2, 2);
img.SetRGB(0, 0, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(0, 1, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(1, 0, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetRGB(1, 1, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetMaskColour(maskCol.Red(), maskCol.Green(), maskCol.Blue());
REQUIRE_FALSE(img.HasAlpha());
REQUIRE(img.HasMask() == true);
wxBitmap bmp(img);
REQUIRE_FALSE(bmp.HasAlpha());
REQUIRE(bmp.GetMask() != NULL);
REQUIRE(bmp.GetWidth() == img.GetWidth());
REQUIRE(bmp.GetHeight() == img.GetHeight());
wxNativePixelData dataBmp(bmp);
wxNativePixelData::Iterator rowStartBmp(dataBmp);
wxBitmap mask = bmp.GetMask()->GetBitmap();
wxNativePixelData dataMask(mask);
wxNativePixelData::Iterator rowStartMask(dataMask);
for ( int y = 0; y < bmp.GetHeight(); ++y )
{
wxNativePixelData::Iterator iBmp = rowStartBmp;
wxNativePixelData::Iterator iMask = rowStartMask;
for ( int x = 0; x < bmp.GetWidth(); ++x, ++iBmp, ++iMask )
{
wxColour bmpc(iBmp.Red(), iBmp.Green(), iBmp.Blue());
wxColour maskc(iMask.Red(), iMask.Green(), iMask.Blue());
wxColour imgc(img.GetRed(x, y), img.GetGreen(x, y), img.GetBlue(x, y));
CHECK_EQUAL_COLOUR_RGB(bmpc, imgc);
wxColour c = maskc == *wxWHITE ? fillCol : maskCol;
CHECK_EQUAL_COLOUR_RGB(bmpc, c);
}
rowStartBmp.OffsetY(dataBmp, 1);
rowStartMask.OffsetY(dataMask, 1);
}
}
SECTION("RGBA image without mask")
{
wxImage img(2, 2);
img.SetRGB(0, 0, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(0, 1, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(1, 0, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetRGB(1, 1, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetAlpha();
img.SetAlpha(0, 0, 128);
img.SetAlpha(0, 1, 0);
img.SetAlpha(1, 0, 128);
img.SetAlpha(1, 1, 0);
REQUIRE(img.HasAlpha() == true);
REQUIRE_FALSE(img.HasMask());
wxBitmap bmp(img);
REQUIRE(bmp.HasAlpha() == true);
REQUIRE(bmp.GetMask() == NULL);
REQUIRE(bmp.GetWidth() == img.GetWidth());
REQUIRE(bmp.GetHeight() == img.GetHeight());
wxAlphaPixelData dataBmp(bmp);
wxAlphaPixelData::Iterator rowStartBmp(dataBmp);
for ( int y = 0; y < bmp.GetHeight(); ++y )
{
wxAlphaPixelData::Iterator iBmp = rowStartBmp;
for ( int x = 0; x < bmp.GetWidth(); ++x, ++iBmp )
{
wxColour bmpc(iBmp.Red(), iBmp.Green(), iBmp.Blue(), iBmp.Alpha());
wxColour imgc(img.GetRed(x, y), img.GetGreen(x, y), img.GetBlue(x, y), img.GetAlpha(x, y));
#if defined(__WXMSW__) || defined(__WXOSX__)
// Premultiplied values
unsigned char r = ((imgc.Red() * imgc.Alpha()) + 127) / 255;
unsigned char g = ((imgc.Green() * imgc.Alpha()) + 127) / 255;
unsigned char b = ((imgc.Blue() * imgc.Alpha()) + 127) / 255;
imgc.Set(r, g, b, imgc.Alpha());
#endif // __WXMSW__ || __WXOSX__
CHECK_EQUAL_COLOUR_RGBA(bmpc, imgc);
}
rowStartBmp.OffsetY(dataBmp, 1);
}
}
SECTION("RGBA image with mask")
{
wxImage img(2, 2);
img.SetRGB(0, 0, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(0, 1, maskCol.Red(), maskCol.Green(), maskCol.Blue());
img.SetRGB(1, 0, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetRGB(1, 1, fillCol.Red(), fillCol.Green(), fillCol.Blue());
img.SetAlpha();
img.SetAlpha(0, 0, 128);
img.SetAlpha(0, 1, 0);
img.SetAlpha(1, 0, 128);
img.SetAlpha(1, 1, 0);
img.SetMaskColour(maskCol.Red(), maskCol.Green(), maskCol.Blue());
REQUIRE(img.HasAlpha() == true);
REQUIRE(img.HasMask() == true);
wxBitmap bmp(img);
REQUIRE(bmp.HasAlpha() == true);
REQUIRE(bmp.GetMask() != NULL);
REQUIRE(bmp.GetWidth() == img.GetWidth());
REQUIRE(bmp.GetHeight() == img.GetHeight());
wxAlphaPixelData dataBmp(bmp);
wxAlphaPixelData::Iterator rowStartBmp(dataBmp);
wxBitmap mask = bmp.GetMask()->GetBitmap();
wxNativePixelData dataMask(mask);
wxNativePixelData::Iterator rowStartMask(dataMask);
for ( int y = 0; y < bmp.GetHeight(); ++y )
{
wxAlphaPixelData::Iterator iBmp = rowStartBmp;
wxNativePixelData::Iterator iMask = rowStartMask;
for ( int x = 0; x < bmp.GetWidth(); ++x, ++iBmp, ++iMask )
{
wxColour bmpc(iBmp.Red(), iBmp.Green(), iBmp.Blue(), iBmp.Alpha());
wxColour maskc(iMask.Red(), iMask.Green(), iMask.Blue());
wxColour imgc(img.GetRed(x, y), img.GetGreen(x, y), img.GetBlue(x, y), img.GetAlpha(x, y));
#if defined(__WXMSW__) || defined(__WXOSX__)
// Premultiplied values
unsigned char r = ((imgc.Red() * imgc.Alpha()) + 127) / 255;
unsigned char g = ((imgc.Green() * imgc.Alpha()) + 127) / 255;
unsigned char b = ((imgc.Blue() * imgc.Alpha()) + 127) / 255;
imgc.Set(r, g, b, imgc.Alpha());
#endif // __WXMSW__ || __WXOSX__
CHECK_EQUAL_COLOUR_RGBA(bmpc, imgc);
wxColour c = maskc == *wxWHITE ? fillCol : maskCol;
#if defined(__WXMSW__) || defined(__WXOSX__)
// Premultiplied values
r = ((c.Red() * imgc.Alpha()) + 127) / 255;
g = ((c.Green() * imgc.Alpha()) + 127) / 255;
b = ((c.Blue() * imgc.Alpha()) + 127) / 255;
c.Set(r, g, b);
#endif // __WXMSW__ || __WXOSX__
CHECK_EQUAL_COLOUR_RGB(bmpc, c);
}
rowStartBmp.OffsetY(dataBmp, 1);
rowStartMask.OffsetY(dataMask, 1);
}
}
}
TEST_CASE("BitmapTestCase::OverlappingBlit", "[bitmap][blit]")
{
wxBitmap bmp(10, 10);