TEST(fxcodec, CMYK_Rounding) {
// Testing all floats from 0.0 to 1.0 takes about 35 seconds in release
// builds and much longer in debug builds, so just test the known-dangerous
// range.
const FX_FLOAT startValue = 0.001f;
const FX_FLOAT endValue = 0.003f;
FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
// Iterate through floats by incrementing the representation, as discussed in
// https://randomascii.wordpress.com/2012/01/23/stupid-float-tricks-2/
for (Float_t f = startValue; f.f < endValue; f.i++) {
AdobeCMYK_to_sRGB(f.f, f.f, f.f, f.f, R, G, B);
}
// Check various other 'special' numbers.
AdobeCMYK_to_sRGB(0.0f, 0.25f, 0.5f, 1.0f, R, G, B);
}
FX_BOOL CPDF_ColorSpace::SetCMYK(FX_FLOAT* pBuf, FX_FLOAT c, FX_FLOAT m, FX_FLOAT y, FX_FLOAT k) const
{
if (v_SetCMYK(pBuf, c, m, y, k)) {
return TRUE;
}
FX_FLOAT R, G, B;
AdobeCMYK_to_sRGB(c, m, y, k, R, G, B);
return SetRGB(pBuf, R, G, B);
}
FX_BOOL CPDF_DeviceCS::v_SetCMYK(FX_FLOAT* pBuf, FX_FLOAT c, FX_FLOAT m, FX_FLOAT y, FX_FLOAT k) const
{
if (m_Family == PDFCS_DEVICERGB) {
AdobeCMYK_to_sRGB(c, m, y, k, pBuf[0], pBuf[1], pBuf[2]);
return TRUE;
}
if (m_Family == PDFCS_DEVICECMYK) {
pBuf[0] = c;
pBuf[1] = m;
pBuf[2] = y;
pBuf[3] = k;
return TRUE;
}
return FALSE;
}
FX_BOOL CPDF_DeviceCS::GetRGB(FX_FLOAT* pBuf,
FX_FLOAT& R,
FX_FLOAT& G,
FX_FLOAT& B) const {
if (m_Family == PDFCS_DEVICERGB) {
R = pBuf[0];
if (R < 0) {
R = 0;
} else if (R > 1) {
R = 1;
}
G = pBuf[1];
if (G < 0) {
G = 0;
} else if (G > 1) {
G = 1;
}
B = pBuf[2];
if (B < 0) {
B = 0;
} else if (B > 1) {
B = 1;
}
} else if (m_Family == PDFCS_DEVICEGRAY) {
R = *pBuf;
if (R < 0) {
R = 0;
} else if (R > 1) {
R = 1;
}
G = B = R;
} else if (m_Family == PDFCS_DEVICECMYK) {
if (!m_dwStdConversion) {
AdobeCMYK_to_sRGB(pBuf[0], pBuf[1], pBuf[2], pBuf[3], R, G, B);
} else {
FX_FLOAT k = pBuf[3];
R = 1.0f - FX_MIN(1.0f, pBuf[0] + k);
G = 1.0f - FX_MIN(1.0f, pBuf[1] + k);
B = 1.0f - FX_MIN(1.0f, pBuf[2] + k);
}
} else {
ASSERT(m_Family == PDFCS_PATTERN);
R = G = B = 0;
return FALSE;
}
return TRUE;
}