Exemple #1
0
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));
}
Exemple #2
0
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;
}
Exemple #3
0
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;
}