GrShape& GrShape::operator=(const GrShape& that) {
bool wasPath = Type::kPath == fType;
fStyle = that.fStyle;
fType = that.fType;
switch (fType) {
case Type::kEmpty:
if (wasPath) {
fPath.reset();
}
break;
case Type::kRRect:
if (wasPath) {
fPath.reset();
}
fRRect = that.fRRect;
break;
case Type::kPath:
if (wasPath) {
*fPath.get() = *that.fPath.get();
} else {
fPath.set(*that.fPath.get());
}
break;
}
fInheritedKey.reset(that.fInheritedKey.count());
sk_careful_memcpy(fInheritedKey.get(), that.fInheritedKey.get(),
sizeof(uint32_t) * fInheritedKey.count());
return *this;
}
void flushAttributes()
{
SkASSERT(fLevel > 0);
int attrCount = fAttrs.count();
SkDOM::Node* node = (SkDOM::Node*)fAlloc->alloc(sizeof(SkDOM::Node) + attrCount * sizeof(SkDOM::Attr),
SkChunkAlloc::kThrow_AllocFailType);
node->fName = fElemName;
node->fFirstChild = nullptr;
node->fAttrCount = SkToU16(attrCount);
node->fType = fElemType;
if (fRoot == nullptr)
{
node->fNextSibling = nullptr;
fRoot = node;
}
else // this adds siblings in reverse order. gets corrected in onEndElement()
{
SkDOM::Node* parent = fParentStack.top();
SkASSERT(fRoot && parent);
node->fNextSibling = parent->fFirstChild;
parent->fFirstChild = node;
}
*fParentStack.push() = node;
sk_careful_memcpy(node->attrs(), fAttrs.begin(), attrCount * sizeof(SkDOM::Attr));
fAttrs.reset();
}
GrShape& GrShape::operator=(const GrShape& that) {
fStyle = that.fStyle;
this->changeType(that.fType, Type::kPath == that.fType ? &that.path() : nullptr);
switch (fType) {
case Type::kEmpty:
break;
case Type::kInvertedEmpty:
break;
case Type::kRRect:
fRRectData = that.fRRectData;
break;
case Type::kArc:
fArcData = that.fArcData;
break;
case Type::kLine:
fLineData = that.fLineData;
break;
case Type::kPath:
fPathData.fGenID = that.fPathData.fGenID;
break;
}
fInheritedKey.reset(that.fInheritedKey.count());
sk_careful_memcpy(fInheritedKey.get(), that.fInheritedKey.get(),
sizeof(uint32_t) * fInheritedKey.count());
if (that.fInheritedPathForListeners.isValid()) {
fInheritedPathForListeners.set(*that.fInheritedPathForListeners.get());
} else {
fInheritedPathForListeners.reset();
}
return *this;
}
// Writes the path data key into the passed pointer.
static void write_path_key_from_data(const SkPath& path, uint32_t* origKey) {
uint32_t* key = origKey;
// The check below should take care of negative values casted positive.
const int verbCnt = path.countVerbs();
const int pointCnt = path.countPoints();
const int conicWeightCnt = SkPathPriv::ConicWeightCnt(path);
SkASSERT(verbCnt <= GrShape::kMaxKeyFromDataVerbCnt);
SkASSERT(pointCnt && verbCnt);
*key++ = path.getFillType();
*key++ = verbCnt;
memcpy(key, SkPathPriv::VerbData(path), verbCnt * sizeof(uint8_t));
int verbKeySize = SkAlign4(verbCnt);
// pad out to uint32_t alignment using value that will stand out when debugging.
uint8_t* pad = reinterpret_cast<uint8_t*>(key)+ verbCnt;
memset(pad, 0xDE, verbKeySize - verbCnt);
key += verbKeySize >> 2;
memcpy(key, SkPathPriv::PointData(path), sizeof(SkPoint) * pointCnt);
GR_STATIC_ASSERT(sizeof(SkPoint) == 2 * sizeof(uint32_t));
key += 2 * pointCnt;
sk_careful_memcpy(key, SkPathPriv::ConicWeightData(path), sizeof(SkScalar) * conicWeightCnt);
GR_STATIC_ASSERT(sizeof(SkScalar) == sizeof(uint32_t));
SkDEBUGCODE(key += conicWeightCnt);
SkASSERT(key - origKey == path_key_from_data_size(path));
}
Request(const char* name, size_t nameLen, const SkFontStyle& style) : fStyle(style) {
/** Pointer to just after the last field of this class. */
char* content = const_cast<char*>(SkTAfter<const char>(&this->fStyle));
// No holes.
SkASSERT(SkTAddOffset<char>(this, sizeof(SkResourceCache::Key) + keySize) == content);
// Has a size divisible by size of uint32_t.
SkASSERT((content - reinterpret_cast<char*>(this)) % sizeof(uint32_t) == 0);
size_t contentLen = SkAlign4(nameLen);
sk_careful_memcpy(content, name, nameLen);
sk_bzero(content + nameLen, contentLen - nameLen);
this->init(nullptr, 0, keySize + contentLen);
}
// Sort of like makeSpace(0) but the the additional requirement that we actively shrink the
// allocations to just fit the current needs. makeSpace() will only grow, but never shrinks.
//
void SkPath::shrinkToFit() {
const size_t kMinFreeSpaceForShrink = 8; // just made up a small number
if (fPathRef->fFreeSpace <= kMinFreeSpaceForShrink) {
return;
}
if (fPathRef->unique()) {
int pointCount = fPathRef->fPointCnt;
int verbCount = fPathRef->fVerbCnt;
size_t ptsSize = sizeof(SkPoint) * pointCount;
size_t vrbSize = sizeof(uint8_t) * verbCount;
size_t minSize = ptsSize + vrbSize;
void* newAlloc = sk_malloc_canfail(minSize);
if (!newAlloc) {
return; // couldn't allocate the smaller buffer, but that's ok
}
sk_careful_memcpy(newAlloc, fPathRef->fPoints, ptsSize);
sk_careful_memcpy((char*)newAlloc + minSize - vrbSize, fPathRef->verbsMemBegin(), vrbSize);
sk_free(fPathRef->fPoints);
fPathRef->fPoints = static_cast<SkPoint*>(newAlloc);
fPathRef->fVerbs = (uint8_t*)newAlloc + minSize;
fPathRef->fFreeSpace = 0;
fPathRef->fConicWeights.shrinkToFit();
} else {
sk_sp<SkPathRef> pr(new SkPathRef);
pr->copy(*fPathRef, 0, 0);
fPathRef = std::move(pr);
}
SkDEBUGCODE(fPathRef->validate();)
}
static void copy_v(void* dst, const S* src, int n, Rest&&... rest) {
SkASSERTF(((uintptr_t)dst & (alignof(S)-1)) == 0,
"Expected %p to be aligned for at least %zu bytes.", dst, alignof(S));
sk_careful_memcpy(dst, src, n*sizeof(S));
copy_v(SkTAddOffset<void>(dst, n*sizeof(S)), std::forward<Rest>(rest)...);
}
