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Account for different size in bitmap from cursor test

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Use already existing wx.png to test the cursor.
Compare alpha channel of images.
This commit is contained in:
Maarten Bent 2021-04-10 15:26:10 +02:00
parent 0c82830a5d
commit 3a27830ed5
3 changed files with 61 additions and 34 deletions
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90
tests/image/image.cpp
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@ -32,6 +32,18 @@
#include "testimage.h"
#define CHECK_EQUAL_COLOUR_RGB(c1, c2) \
CHECK( (int)c1.Red() == (int)c2.Red() ); \
CHECK( (int)c1.Green() == (int)c2.Green() ); \
CHECK( (int)c1.Blue() == (int)c2.Blue() )
#define CHECK_EQUAL_COLOUR_RGBA(c1, c2) \
CHECK( (int)c1.Red() == (int)c2.Red() ); \
CHECK( (int)c1.Green() == (int)c2.Green() ); \
CHECK( (int)c1.Blue() == (int)c2.Blue() ); \
CHECK( (int)c1.Alpha() == (int)c2.Alpha() )
struct testData {
const char* file;
wxBitmapType type;
@ -1454,34 +1466,55 @@ void ImageTestCase::ScaleCompare()
"image/cross_nearest_neighb_256x256.png");
}
const unsigned char toucan[] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x01, 0xc0, 0x00,
0x00, 0x09, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00,
0x00, 0x78, 0x00, 0x00, 0x00, 0x78, 0x00, 0x00, 0x08, 0xf8, 0x00, 0x00, 0x58, 0xf8, 0x00, 0x00,
0x2f, 0xf8, 0x00, 0x00, 0x50, 0x78, 0x00, 0x00, 0x64, 0x00, 0x01, 0x00, 0x61, 0x80, 0x00, 0x00,
0x7b, 0x00, 0x00, 0x00, 0x00, 0x60, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x0d, 0x20, 0x00, 0x00,
0x48, 0x10, 0x00, 0x00, 0x50, 0x80, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void ImageTestCase::CreateBitmapFromCursor()
{
#if !defined __WXOSX_IPHONE__ && !defined __WXDFB__ && !defined __WXMOTIF__ && !defined __WXX11__
#ifdef __WXMSW__
wxImage image( 32, 32, toucan );
#else
wxImage image( "../../samples/image/toucan.png" );
wxImage image("image/wx.png");
wxCursor cursor(image);
wxBitmap bitmap(cursor);
#if defined(__WXGTK__)
// cursor to bitmap could fail depending on windowing system and cursor (gdk-cursor-get-image)
if ( !bitmap.IsOk() )
return;
#endif
wxCursor cursor( image );
wxBitmap bitmap( cursor );
if( bitmap.IsOk() )
#ifdef __WXOSX__
CHECK_THAT( image, RGBSimilarTo( bitmap.ConvertToImage(), 2 ) );
#else
CHECK_THAT( image, RGBSameAs( bitmap.ConvertToImage() ) );
wxImage result = bitmap.ConvertToImage();
// on Windows the cursor is always scaled to 32x32px (96 DPI)
// on macOS the resulting bitmap size depends on the DPI
if ( image.GetSize() == result.GetSize() )
{
CHECK_THAT(image, RGBASimilarTo(result, 2));
}
else
{
wxVector<wxPoint> coords;
coords.push_back(wxPoint(14, 10)); // blue square
coords.push_back(wxPoint(8, 22)); // red square
coords.push_back(wxPoint(26, 18)); // yellow square
coords.push_back(wxPoint(25, 5)); // empty / tranparent
for ( size_t i = 0; i < coords.size(); ++i )
{
wxPoint const& p1 = coords[i];
wxPoint p2 = wxPoint(p1.x * (result.GetWidth() / (double)image.GetWidth()), p1.y * (result.GetHeight() / (double)image.GetHeight()));
#if defined(__WXMSW__)
// when the cursor / result image is larger than the source image, the original image is centered in the result image
if ( result.GetWidth() > image.GetWidth() )
p2.x = (result.GetWidth() / 2) + (p1.x - (image.GetWidth() / 2));
if ( result.GetHeight() > image.GetHeight() )
p2.y = (result.GetHeight() / 2) + (p1.y - (image.GetHeight() / 2));
#endif
wxColour cSrc(image.GetRed(p1.x, p1.y), image.GetGreen(p1.x, p1.y), image.GetBlue(p1.x, p1.y), image.GetAlpha(p1.x, p1.y));
wxColour cRes(result.GetRed(p2.x, p2.y), result.GetGreen(p2.x, p2.y), result.GetBlue(p2.x, p2.y), result.GetAlpha(p2.x, p2.y));
CHECK_EQUAL_COLOUR_RGBA(cRes, cSrc);
}
}
#endif
}
@ -2004,17 +2037,6 @@ TEST_CASE("wxImage::Clipboard", "[image][clipboard]")
#endif // wxUSE_CLIPBOARD && wxUSE_DATAOBJ
}
#define CHECK_EQUAL_COLOUR_RGB(c1, c2) \
CHECK( (int)c1.Red() == (int)c2.Red() ); \
CHECK( (int)c1.Green() == (int)c2.Green() ); \
CHECK( (int)c1.Blue() == (int)c2.Blue() )
#define CHECK_EQUAL_COLOUR_RGBA(c1, c2) \
CHECK( (int)c1.Red() == (int)c2.Red() ); \
CHECK( (int)c1.Green() == (int)c2.Green() ); \
CHECK( (int)c1.Blue() == (int)c2.Blue() ); \
CHECK( (int)c1.Alpha() == (int)c2.Alpha() )
TEST_CASE("wxImage::InitAlpha", "[image][initalpha]")
{
const wxColour maskCol(*wxRED);

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tests/image/toucan.png
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5
tests/testimage.h
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@ -175,6 +175,11 @@ inline ImageRGBMatcher RGBSimilarTo(const wxImage& image, int tolerance)
return ImageRGBMatcher(image, tolerance, false);
}
inline ImageRGBMatcher RGBASimilarTo(const wxImage& image, int tolerance)
{
return ImageRGBMatcher(image, tolerance, true);
}
class ImageAlphaMatcher : public Catch::MatcherBase<wxImage>
{
public: