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Add tests of creating wxGraphicsBitmap from wxImage

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This commit is contained in:
Artur Wieczorek
2021-02-08 23:25:11 +01:00
parent f2d5ff0121
commit c7667c16f8
1 changed files with 282 additions and 98 deletions
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380
tests/graphics/graphbitmap.cpp
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@@ -162,49 +162,89 @@ wxBitmap CreateBitmapRGBA(int w, int h, bool withMask)
return bmp;
}
void BlendMaskWithAlpha(wxImage& img)
wxImage MakeReferenceImage(const wxImage& img)
{
if ( img.HasAlpha() && img.HasMask() )
wxImage refImg = img;
if ( refImg.HasMask() )
{
// We need to blend mask with alpha values
size_t numPixels = img.GetWidth() * img.GetHeight();
unsigned char* oldAlpha = new unsigned char[numPixels];
memcpy(oldAlpha, img.GetAlpha(), numPixels);
img.ClearAlpha();
img.InitAlpha();
unsigned char* newAlpha = img.GetAlpha();
for ( size_t i = 0; i < numPixels; i++ )
// wxGraphicsBitmap doesn't have a mask so we need wxImage
// without mask to be compared with created wxGraphicsBitmap.
if ( refImg.HasAlpha() )
{
if ( newAlpha[i] == wxIMAGE_ALPHA_OPAQUE )
newAlpha[i] = oldAlpha[i];
// We need to blend mask with alpha values
size_t numPixels = refImg.GetWidth() * refImg.GetHeight();
unsigned char* oldAlpha = new unsigned char[numPixels];
memcpy(oldAlpha, refImg.GetAlpha(), numPixels);
refImg.ClearAlpha();
refImg.InitAlpha();
unsigned char* newAlpha = refImg.GetAlpha();
for ( size_t i = 0; i < numPixels; i++ )
{
if ( newAlpha[i] == wxIMAGE_ALPHA_OPAQUE )
newAlpha[i] = oldAlpha[i];
}
delete[]oldAlpha;
}
else
{
refImg.InitAlpha();
}
delete[]oldAlpha;
}
else
if ( refImg.HasAlpha() )
{
img.InitAlpha();
// We need also to remove mask colour from transparent pixels
// for compatibility with wxGraphicsBitmap.
for ( int y = 0; y < refImg.GetHeight(); y++ )
for ( int x = 0; x < refImg.GetWidth(); x++ )
{
if ( refImg.GetAlpha(x, y) == wxALPHA_TRANSPARENT )
{
refImg.SetRGB(x, y, 0, 0, 0);
}
}
}
return refImg;
}
inline void CheckCreateGraphBitmap(wxGraphicsRenderer* gr, const wxBitmap& srcBmp, const wxImage& refImg)
inline void CheckCreateGraphBitmap(wxGraphicsRenderer* gr, const wxBitmap& srcBmp, const wxImage& srcImg)
{
wxGraphicsBitmap gbmp = gr->CreateBitmap(srcBmp);
wxImage gimage = gbmp.ConvertToImage();
// Reference image needs to be in the format compatible with wxGraphicsBitmap.
wxImage refImg = MakeReferenceImage(srcImg);
CHECK_THAT(gimage, RGBASameAs(refImg));
}
inline void CheckCreateGraphSubBitmap(wxGraphicsRenderer* gr, const wxBitmap& srcBmp,
double x, double y, double w, double h,
const wxImage& refImg)
const wxImage& srcImg)
{
wxGraphicsBitmap gbmp = gr->CreateBitmap(srcBmp);
wxGraphicsBitmap gSubBmp = gr->CreateSubBitmap(gbmp, x, y, w, h);
wxImage gimage = gSubBmp.ConvertToImage();
// Reference image needs to be in the format compatible with wxGraphicsBitmap.
wxImage refImg = MakeReferenceImage(srcImg);
CHECK_THAT(gimage, RGBASameAs(refImg));
}
inline void CheckCreateGraphBitmapFromImage(wxGraphicsRenderer* gr, const wxImage& srcImg)
{
wxGraphicsBitmap gbmp = gr->CreateBitmapFromImage(srcImg);
wxImage gimage = gbmp.ConvertToImage();
// Reference image needs to be in the format compatible with wxGraphicsBitmap.
wxImage refImg = MakeReferenceImage(srcImg);
CHECK_THAT(gimage, RGBASameAs(refImg));
}
};
@@ -278,22 +318,6 @@ TEST_CASE("GraphicsBitmapTestCase::Create", "[graphbitmap][create]")
const wxColour maskCol(image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
REQUIRE(maskCol.IsOk());
// wxGraphicsBitmap doesn't have a mask so we need wxImage without mask
// to be compared with created wxGraphicsBitmap.
image.InitAlpha();
REQUIRE(image.HasAlpha() == true);
REQUIRE_FALSE(image.HasMask());
// We need also to remove mask colour from transparent pixels
// for compatibility with wxGraphicsMask.
for ( int y = 0; y < image.GetHeight(); y++ )
for ( int x = 0; x < image.GetWidth(); x++ )
{
if ( image.GetAlpha(x, y) == wxALPHA_TRANSPARENT )
{
image.SetRGB(x, y, 0, 0, 0);
}
}
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
@@ -401,22 +425,6 @@ TEST_CASE("GraphicsBitmapTestCase::Create", "[graphbitmap][create]")
const wxColour maskCol(image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
REQUIRE(maskCol.IsOk());
// wxGraphicsBitmap doesn't have a mask so we need wxImage without mask
// to be compared with created wxGraphicsBitmap.
image.InitAlpha();
REQUIRE(image.HasAlpha() == true);
REQUIRE_FALSE(image.HasMask());
// We need also to remove mask colour from transparent pixels
// for compatibility with wxGraphicsMask.
for ( int y = 0; y < image.GetHeight(); y++ )
for ( int x = 0; x < image.GetWidth(); x++ )
{
if ( image.GetAlpha(x, y) == wxALPHA_TRANSPARENT )
{
image.SetRGB(x, y, 0, 0, 0);
}
}
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
@@ -522,22 +530,6 @@ TEST_CASE("GraphicsBitmapTestCase::Create", "[graphbitmap][create]")
const wxColour maskCol(image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
REQUIRE(maskCol.IsOk());
// wxGraphicsBitmap doesn't have a mask so we need wxImage without mask
// to be compared with created wxGraphicsBitmap.
BlendMaskWithAlpha(image);
REQUIRE(image.HasAlpha() == true);
REQUIRE_FALSE(image.HasMask());
// We need also to remove mask colour from transparent pixels
// for compatibility with wxGraphicsMask.
for ( int y = 0; y < image.GetHeight(); y++ )
for ( int x = 0; x < image.GetWidth(); x++ )
{
if ( image.GetAlpha(x, y) == wxALPHA_TRANSPARENT )
{
image.SetRGB(x, y, 0, 0, 0);
}
}
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
@@ -653,22 +645,6 @@ TEST_CASE("GraphicsBitmapTestCase::SubBitmap", "[graphbitmap][subbitmap][create]
const wxColour maskCol(image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
REQUIRE(maskCol.IsOk());
// wxGraphicsBitmap doesn't have a mask so we need wxImage without mask
// to be compared with created wxGraphicsBitmap.
image.InitAlpha();
REQUIRE(image.HasAlpha() == true);
REQUIRE_FALSE(image.HasMask());
// We need also to remove mask colour from transparent pixels
// for compatibility with wxGraphicsMask.
for ( int y = 0; y < image.GetHeight(); y++ )
for ( int x = 0; x < image.GetWidth(); x++ )
{
if ( image.GetAlpha(x, y) == wxALPHA_TRANSPARENT )
{
image.SetRGB(x, y, 0, 0, 0);
}
}
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
@@ -913,22 +889,6 @@ TEST_CASE("GraphicsBitmapTestCase::SubBitmap", "[graphbitmap][subbitmap][create]
const wxColour maskCol(image.GetMaskRed(), image.GetMaskGreen(), image.GetMaskBlue());
REQUIRE(maskCol.IsOk());
// wxGraphicsBitmap doesn't have a mask so we need wxImage without mask
// to be compared with created wxGraphicsBitmap.
BlendMaskWithAlpha(image);
REQUIRE(image.HasAlpha() == true);
REQUIRE_FALSE(image.HasMask());
// We need also to remove mask colour from transparent pixels
// for compatibility with wxGraphicsMask.
for ( int y = 0; y < image.GetHeight(); y++ )
for ( int x = 0; x < image.GetWidth(); x++ )
{
if ( image.GetAlpha(x, y) == wxALPHA_TRANSPARENT )
{
image.SetRGB(x, y, 0, 0, 0);
}
}
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
@@ -966,6 +926,230 @@ TEST_CASE("GraphicsBitmapTestCase::SubBitmap", "[graphbitmap][subbitmap][create]
#endif // wxUSE_GRAPHICS_CAIRO
}
}
TEST_CASE("GraphicsBitmapTestCase::CreateFromImage", "[graphbitmap][create][fromimage]")
{
const wxColour maskCol(*wxRED);
const wxColour fillCol(*wxGREEN);
SECTION("RGB image without mask")
{
wxImage img(4, 4);
for ( int y = 0; y < img.GetHeight(); y++ )
for ( int x = 0; x < img.GetWidth(); x++ )
{
if ( x < img.GetWidth() / 2 )
img.SetRGB(x, y, maskCol.Red(), maskCol.Green(), maskCol.Blue());
else
img.SetRGB(x, y, fillCol.Red(), fillCol.Green(), fillCol.Blue());
}
REQUIRE_FALSE(img.HasAlpha());
REQUIRE_FALSE(img.HasMask());
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#if defined(__WXMSW__)
#if wxUSE_GRAPHICS_GDIPLUS
SECTION("GDI+ GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetGDIPlusRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_GDIPLUS
#if wxUSE_GRAPHICS_DIRECT2D
SECTION("Direct2D GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDirect2DRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_DIRECT2D
#endif // __WXMSW__
#if wxUSE_CAIRO
SECTION("Cairo GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetCairoRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_CAIRO
}
SECTION("RGB image with mask")
{
wxImage img(4, 4);
for ( int y = 0; y < img.GetHeight(); y++ )
for ( int x = 0; x < img.GetWidth(); x++ )
{
if ( x < img.GetWidth() / 2 )
img.SetRGB(x, y, maskCol.Red(), maskCol.Green(), maskCol.Blue());
else
img.SetRGB(x, y, fillCol.Red(), fillCol.Green(), fillCol.Blue());
}
img.SetMaskColour(maskCol.Red(), maskCol.Green(), maskCol.Blue());
REQUIRE_FALSE(img.HasAlpha());
REQUIRE(img.HasMask() == true);
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#if defined(__WXMSW__)
#if wxUSE_GRAPHICS_GDIPLUS
SECTION("GDI+ GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetGDIPlusRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_GDIPLUS
#if wxUSE_GRAPHICS_DIRECT2D
SECTION("Direct2D GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDirect2DRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_DIRECT2D
#endif // __WXMSW__
#if wxUSE_CAIRO
SECTION("Cairo GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetCairoRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_CAIRO
}
SECTION("RGBA image without mask")
{
wxImage img(4, 4);
img.SetAlpha();
for ( int y = 0; y < img.GetHeight(); y++ )
for ( int x = 0; x < img.GetWidth(); x++ )
{
if ( x < img.GetWidth() / 2 )
img.SetRGB(x, y, maskCol.Red(), maskCol.Green(), maskCol.Blue());
else
img.SetRGB(x, y, fillCol.Red(), fillCol.Green(), fillCol.Blue());
if ( y < img.GetHeight() / 2 )
img.SetAlpha(x, y, 128);
else
img.SetAlpha(x, y, 0);
}
REQUIRE(img.HasAlpha() == true);
REQUIRE_FALSE(img.HasMask());
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#if defined(__WXMSW__)
#if wxUSE_GRAPHICS_GDIPLUS
SECTION("GDI+ GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetGDIPlusRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_GDIPLUS
#if wxUSE_GRAPHICS_DIRECT2D
SECTION("Direct2D GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDirect2DRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_DIRECT2D
#endif // __WXMSW__
#if wxUSE_CAIRO
SECTION("Cairo GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetCairoRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_CAIRO
}
SECTION("RGBA image with mask")
{
wxImage img(4, 4);
img.SetAlpha();
for ( int y = 0; y < img.GetHeight(); y++ )
for ( int x = 0; x < img.GetWidth(); x++ )
{
if ( x < img.GetWidth() / 2 )
img.SetRGB(x, y, maskCol.Red(), maskCol.Green(), maskCol.Blue());
else
img.SetRGB(x, y, fillCol.Red(), fillCol.Green(), fillCol.Blue());
if ( y < img.GetHeight() / 2 )
img.SetAlpha(x, y, 128);
else
img.SetAlpha(x, y, 0);
}
img.SetMaskColour(maskCol.Red(), maskCol.Green(), maskCol.Blue());
REQUIRE(img.HasAlpha() == true);
REQUIRE(img.HasMask() == true);
SECTION("Default GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDefaultRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#if defined(__WXMSW__)
#if wxUSE_GRAPHICS_GDIPLUS
SECTION("GDI+ GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetGDIPlusRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_GDIPLUS
#if wxUSE_GRAPHICS_DIRECT2D
SECTION("Direct2D GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetDirect2DRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_DIRECT2D
#endif // __WXMSW__
#if wxUSE_CAIRO
SECTION("Cairo GC")
{
wxGraphicsRenderer* gr = wxGraphicsRenderer::GetCairoRenderer();
REQUIRE(gr != NULL);
CheckCreateGraphBitmapFromImage(gr, img);
}
#endif // wxUSE_GRAPHICS_CAIRO
}
}
#endif // wxUSE_GRAPHICS_CONTEXT
#endif // wxHAS_RAW_BITMAP