void Span::Intersect(const Span& s, std::list<Point> &pts)const
{
// finds all the intersection points between two spans and puts them in the given list
geoff_geometry::Point pInt1, pInt2;
double t[4];
int num_int = MakeSpan(*this).Intof(MakeSpan(s), pInt1, pInt2, t);
if(num_int > 0)pts.push_back(Point(pInt1.x, pInt1.y));
if(num_int > 1)pts.push_back(Point(pInt2.x, pInt2.y));
}
nsresult
FileReader::GetAsText(Blob *aBlob,
const nsACString &aCharset,
const char *aFileData,
uint32_t aDataLen,
nsAString& aResult)
{
// Try the API argument.
const Encoding* encoding = Encoding::ForLabel(aCharset);
if (!encoding) {
// API argument failed. Try the type property of the blob.
nsAutoString type16;
aBlob->GetType(type16);
NS_ConvertUTF16toUTF8 type(type16);
nsAutoCString specifiedCharset;
bool haveCharset;
int32_t charsetStart, charsetEnd;
NS_ExtractCharsetFromContentType(type,
specifiedCharset,
&haveCharset,
&charsetStart,
&charsetEnd);
encoding = Encoding::ForLabel(specifiedCharset);
if (!encoding) {
// Type property failed. Use UTF-8.
encoding = UTF_8_ENCODING;
}
}
auto data = MakeSpan(reinterpret_cast<const uint8_t*>(aFileData),
aDataLen);
nsresult rv;
Tie(rv, encoding) = encoding->Decode(data, aResult);
return NS_FAILED(rv) ? rv : NS_OK;
}
nsresult CharacterData::SetTextInternal(
uint32_t aOffset, uint32_t aCount, const char16_t* aBuffer,
uint32_t aLength, bool aNotify,
CharacterDataChangeInfo::Details* aDetails) {
MOZ_ASSERT(aBuffer || !aLength, "Null buffer passed to SetTextInternal!");
// sanitize arguments
uint32_t textLength = mText.GetLength();
if (aOffset > textLength) {
return NS_ERROR_DOM_INDEX_SIZE_ERR;
}
if (aCount > textLength - aOffset) {
aCount = textLength - aOffset;
}
uint32_t endOffset = aOffset + aCount;
// Make sure the text fragment can hold the new data.
if (aLength > aCount && !mText.CanGrowBy(aLength - aCount)) {
return NS_ERROR_OUT_OF_MEMORY;
}
Document* document = GetComposedDoc();
mozAutoDocUpdate updateBatch(document, aNotify);
bool haveMutationListeners =
aNotify && nsContentUtils::HasMutationListeners(
this, NS_EVENT_BITS_MUTATION_CHARACTERDATAMODIFIED, this);
RefPtr<nsAtom> oldValue;
if (haveMutationListeners) {
oldValue = GetCurrentValueAtom();
}
if (aNotify) {
CharacterDataChangeInfo info = {aOffset == textLength, aOffset, endOffset,
aLength, aDetails};
nsNodeUtils::CharacterDataWillChange(this, info);
}
Directionality oldDir = eDir_NotSet;
bool dirAffectsAncestor =
(NodeType() == TEXT_NODE &&
TextNodeWillChangeDirection(static_cast<nsTextNode*>(this), &oldDir,
aOffset));
if (aOffset == 0 && endOffset == textLength) {
// Replacing whole text or old text was empty. Don't bother to check for
// bidi in this string if the document already has bidi enabled.
// If this is marked as "maybe modified frequently", the text should be
// stored as char16_t since converting char* to char16_t* is expensive.
bool ok =
mText.SetTo(aBuffer, aLength, !document || !document->GetBidiEnabled(),
HasFlag(NS_MAYBE_MODIFIED_FREQUENTLY));
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
} else if (aOffset == textLength) {
// Appending to existing
bool ok =
mText.Append(aBuffer, aLength, !document || !document->GetBidiEnabled(),
HasFlag(NS_MAYBE_MODIFIED_FREQUENTLY));
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
} else {
// Merging old and new
bool bidi = mText.IsBidi();
// Allocate new buffer
int32_t newLength = textLength - aCount + aLength;
// Use nsString and not nsAutoString so that we get a nsStringBuffer which
// can be just AddRefed in nsTextFragment.
nsString to;
to.SetCapacity(newLength);
// Copy over appropriate data
if (aOffset) {
mText.AppendTo(to, 0, aOffset);
}
if (aLength) {
to.Append(aBuffer, aLength);
if (!bidi && (!document || !document->GetBidiEnabled())) {
bidi = HasRTLChars(MakeSpan(aBuffer, aLength));
}
}
if (endOffset != textLength) {
mText.AppendTo(to, endOffset, textLength - endOffset);
}
// If this is marked as "maybe modified frequently", the text should be
// stored as char16_t since converting char* to char16_t* is expensive.
// Use char16_t also when we have bidi characters.
bool use2b = HasFlag(NS_MAYBE_MODIFIED_FREQUENTLY) || bidi;
bool ok = mText.SetTo(to, false, use2b);
mText.SetBidi(bidi);
NS_ENSURE_TRUE(ok, NS_ERROR_OUT_OF_MEMORY);
}
UnsetFlags(NS_CACHED_TEXT_IS_ONLY_WHITESPACE);
if (document && mText.IsBidi()) {
// If we found bidi characters in mText.SetTo() above, indicate that the
// document contains bidi characters.
document->SetBidiEnabled();
}
if (dirAffectsAncestor) {
// dirAffectsAncestor being true implies that we have a text node, see
// above.
MOZ_ASSERT(NodeType() == TEXT_NODE);
TextNodeChangedDirection(static_cast<nsTextNode*>(this), oldDir, aNotify);
}
// Notify observers
if (aNotify) {
CharacterDataChangeInfo info = {aOffset == textLength, aOffset, endOffset,
aLength, aDetails};
nsNodeUtils::CharacterDataChanged(this, info);
if (haveMutationListeners) {
InternalMutationEvent mutation(true, eLegacyCharacterDataModified);
mutation.mPrevAttrValue = oldValue;
if (aLength > 0) {
nsAutoString val;
mText.AppendTo(val);
mutation.mNewAttrValue = NS_Atomize(val);
}
mozAutoSubtreeModified subtree(OwnerDoc(), this);
(new AsyncEventDispatcher(this, mutation))->RunDOMEventWhenSafe();
}
}
return NS_OK;
}
