public void CopyToSucceeds(SKColorType colorType)
{
var alphaType = colorType.GetAlphaType();
using var bmp = CreateTestBitmap();
using var copy = bmp.Copy(colorType);
if (colorType == SKColorType.Unknown)
{
Assert.Null(copy);
}
else
{
Assert.NotNull(copy);
Assert.Equal(colorType, copy.ColorType);
Assert.Equal(alphaType, copy.AlphaType);
var color = copy.GetPixel(10, 10);
Assert.NotEqual(SKColors.Empty, color);
if (colorType == SKColorType.Gray8)
{
Assert.Equal(0xFF353535, color);
}
else if (colorType == SKColorType.Alpha8 || colorType == SKColorType.AlphaF16 || colorType == SKColorType.Alpha16)
{
Assert.Equal(0xFF000000, color);
}
else
{
Assert.Equal(0xFFFF0000, color);
}
}
}
public void CopyWithAlphaToSucceeds(SKColorType colorType)
{
var alphaType = colorType.GetAlphaType();
using var bmp = CreateTestBitmap(170);
using var copy = bmp.Copy(colorType);
if (colorType == SKColorType.Unknown)
{
Assert.Null(copy);
}
else
{
Assert.NotNull(copy);
Assert.Equal(colorType, copy.ColorType);
Assert.Equal(alphaType, copy.AlphaType);
var color = copy.GetPixel(10, 10);
Assert.NotEqual(SKColors.Empty, color);
if (colorType == SKColorType.Gray8)
{
Assert.Equal((SKColor)0xFF232323, color);
}
else if (alphaType == SKAlphaType.Opaque)
{
Assert.True(color.Red > color.Green);
Assert.True(color.Red > color.Blue);
Assert.Equal(255, color.Alpha);
}
else if (colorType == SKColorType.Alpha8 || colorType == SKColorType.Alpha16)
{
Assert.Equal((SKColor)0xAA000000, color);
}
else if (colorType == SKColorType.AlphaF16)
{
// rounding
Assert.Equal((SKColor)0xA9000000, color);
}
else
{
Assert.Equal((SKColor)0xAAFF0000, color);
}
}
}