QColor ScColorEngine::getColorProof(const ScColor& color, const ScribusDoc* doc, bool gamutCheck)
{
QColor tmp;
bool gamutChkEnabled = doc ? doc->Gamut : false;
bool spot = color.isSpotColor();
if (color.getColorModel() == colorModelRGB)
{
// Match 133x behavior (RGB greys map to cmyk greys) until we are able to make rgb profiled output
if ( color.CR == color.MG && color.MG == color.YB )
gamutChkEnabled = false;
RGBColor rgb;
rgb.r = color.CR;
rgb.g = color.MG;
rgb.b = color.YB;
tmp = getColorProof(rgb, doc, spot, gamutCheck & gamutChkEnabled);
}
else
{
CMYKColor cmyk;
cmyk.c = color.CR;
cmyk.m = color.MG;
cmyk.y = color.YB;
cmyk.k = color.K;
tmp = getColorProof(cmyk, doc, spot, gamutCheck & gamutChkEnabled);
}
return tmp;
}
QColor ScColorEngine::getColorProof(const ScColor& color, const ScribusDoc* doc, bool gamutCheck)
{
QColor tmp;
bool gamutChkEnabled = doc ? doc->Gamut : false;
bool spot = color.isSpotColor();
if (color.getColorModel() == colorModelRGB)
{
// Match 133x behavior (RGB greys map to cmyk greys) until we are able to make rgb profiled output
if (color.m_values[0] == color.m_values[1] && color.m_values[1] == color.m_values[2])
gamutChkEnabled = false;
RGBColor rgb;
rgb.r = qRound(color.m_values[0] * 255.0);
rgb.g = qRound(color.m_values[1] * 255.0);
rgb.b = qRound(color.m_values[2] * 255.0);
tmp = getColorProof(rgb, doc, spot, gamutCheck & gamutChkEnabled);
}
else
{
CMYKColor cmyk;
cmyk.c = qRound(color.m_values[0] * 255.0);
cmyk.m = qRound(color.m_values[1] * 255.0);
cmyk.y = qRound(color.m_values[2] * 255.0);
cmyk.k = qRound(color.m_values[3] * 255.0);
tmp = getColorProof(cmyk, doc, spot, gamutCheck & gamutChkEnabled);
}
return tmp;
}
QColor ScColorEngine::getShadeColorProof(const ScColor& color, const ScribusDoc* doc, double level)
{
QColor tmp;
bool doGC = doc ? doc->Gamut : false;
bool cmsUse = doc ? doc->HasCMS : false;
bool softProof = doc ? doc->SoftProofing : false;
if (color.getColorModel() == colorModelRGB)
{
RGBColor rgb;
rgb.r = color.CR;
rgb.g = color.MG;
rgb.b = color.YB;
getShadeColorRGB(color, doc, rgb, level);
// Match 133x behavior for rgb grey until we are able to make rgb profiled output
// (RGB greys map to cmyk greys)
if ((cmsUse && softProof) && (rgb.r == rgb.g && rgb.g == rgb.b))
{
doGC = false;
CMYKColor cmyk;
cmyk.c = cmyk.m = cmyk.y = 0;
cmyk.k = 255 - rgb.g;
tmp = getColorProof(cmyk, doc, color.isSpotColor(), doGC);
}
else
tmp = getColorProof(rgb, doc, color.isSpotColor(), doGC);
}
else
{
CMYKColor cmyk;
cmyk.c = color.CR;
cmyk.m = color.MG;
cmyk.y = color.YB;
cmyk.k = color.K;
getShadeColorCMYK(color, doc, cmyk, level);
tmp = getColorProof(cmyk, doc, color.isSpotColor(), doGC);
}
return tmp;
}
QColor ScColorEngine::getShadeColorProof(const ScColor& color, const ScribusDoc* doc, double level)
{
QColor tmp;
bool doGC = doc ? doc->Gamut : false;
bool cmsUse = doc ? doc->HasCMS : false;
bool softProof = doc ? doc->SoftProofing : false;
if (color.getColorModel() == colorModelRGB)
{
RGBColorF rgb;
rgb.r = color.m_values[0];
rgb.g = color.m_values[1];
rgb.b = color.m_values[2];
getShadeColorRGB(color, doc, rgb, level);
// Match 133x behavior for rgb grey until we are able to make rgb profiled output
// (RGB greys map to cmyk greys)
if ((cmsUse && softProof) && (rgb.r == rgb.g && rgb.g == rgb.b))
{
doGC = false;
CMYKColorF cmyk;
cmyk.c = cmyk.m = cmyk.y = 0;
cmyk.k = 1.0 - rgb.g;
tmp = getColorProof(cmyk, doc, color.isSpotColor(), doGC);
}
else
tmp = getColorProof(rgb, doc, color.isSpotColor(), doGC);
}
else if (color.getColorModel() == colorModelCMYK)
{
CMYKColorF cmyk;
cmyk.c = color.m_values[0];
cmyk.m = color.m_values[1];
cmyk.y = color.m_values[2];
cmyk.k = color.m_values[3];
getShadeColorCMYK(color, doc, cmyk, level);
tmp = getColorProof(cmyk, doc, color.isSpotColor(), doGC);
}
else if (color.getColorModel() == colorModelLab)
{
double inC[3];
inC[0] = 100 - (100 - color.m_L_val) * (level / 100.0);
inC[1] = color.m_a_val * (level / 100.0);
inC[2] = color.m_b_val * (level / 100.0);
quint16 outC[3];
ScColorTransform trans = doc ? doc->stdLabToScreenTrans : ScCore->defaultLabToRGBTrans;
ScColorTransform transProof = doc ? doc->stdProofLab : ScCore->defaultLabToRGBTrans;
ScColorTransform transProofGC = doc ? doc->stdProofLabGC : ScCore->defaultLabToRGBTrans;
if (cmsUse && doc && doc->SoftProofing)
{
ScColorTransform xform = doGC ? transProofGC : transProof;
xform.apply(inC, outC, 1);
tmp = QColor(outC[0] / 257, outC[1] / 257, outC[2] / 257);
}
else
{
trans.apply(inC, outC, 1);
tmp = QColor(outC[0] / 257, outC[1] / 257, outC[2] / 257);
}
}
return tmp;
}
