// static
SkPDFGraphicState* SkPDFGraphicState::GetSMaskGraphicState(
SkPDFFormXObject* sMask, bool invert, SkPDFSMaskMode sMaskMode) {
// The practical chances of using the same mask more than once are unlikely
// enough that it's not worth canonicalizing.
SkAutoMutexAcquire lock(CanonicalPaintsMutex());
SkAutoTUnref<SkPDFDict> sMaskDict(new SkPDFDict("Mask"));
if (sMaskMode == kAlpha_SMaskMode) {
sMaskDict->insertName("S", "Alpha");
} else if (sMaskMode == kLuminosity_SMaskMode) {
sMaskDict->insertName("S", "Luminosity");
}
sMaskDict->insert("G", new SkPDFObjRef(sMask))->unref();
SkPDFGraphicState* result = new SkPDFGraphicState;
result->fPopulated = true;
result->fSMask = true;
result->insertName("Type", "ExtGState");
result->insert("SMask", sMaskDict.get());
result->fResources.push(sMask);
sMask->ref();
if (invert) {
SkPDFObject* invertFunction = GetInvertFunction();
result->fResources.push(invertFunction);
invertFunction->ref();
sMaskDict->insert("TR", new SkPDFObjRef(invertFunction))->unref();
}
return result;
}
// static
SkPDFDict* SkPDFGraphicState::GetSMaskGraphicState(SkPDFFormXObject* sMask,
bool invert,
SkPDFSMaskMode sMaskMode) {
// The practical chances of using the same mask more than once are unlikely
// enough that it's not worth canonicalizing.
SkAutoTUnref<SkPDFDict> sMaskDict(new SkPDFDict("Mask"));
if (sMaskMode == kAlpha_SMaskMode) {
sMaskDict->insertName("S", "Alpha");
} else if (sMaskMode == kLuminosity_SMaskMode) {
sMaskDict->insertName("S", "Luminosity");
}
sMaskDict->insertObjRef("G", SkRef(sMask));
if (invert) {
sMaskDict->insertObjRef("TR", SkRef(invertFunction.get()));
}
SkPDFDict* result = new SkPDFDict("ExtGState");
result->insertObject("SMask", sMaskDict.detach());
return result;
}
