chromium/src/third_party/blink/renderer/core/css/css_path_value.cc

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "third_party/blink/renderer/core/css/css_path_value.h"

#include <memory>
#include "third_party/blink/renderer/core/style/style_path.h"
#include "third_party/blink/renderer/core/svg/svg_path_utilities.h"
#include "third_party/blink/renderer/platform/heap/persistent.h"
#include "third_party/blink/renderer/platform/wtf/text/string_builder.h"

namespace blink {

namespace cssvalue {

CSSPathValue::CSSPathValue(scoped_refptr<StylePath> style_path,
                           PathSerializationFormat serialization_format)
    : CSSValue(kPathClass),
      style_path_(std::move(style_path)),
      serialization_format_(serialization_format) {
  DCHECK(style_path_);
}

CSSPathValue::CSSPathValue(std::unique_ptr<SVGPathByteStream> path_byte_stream,
                           WindRule wind_rule,
                           PathSerializationFormat serialization_format)
    : CSSPathValue(StylePath::Create(std::move(path_byte_stream), wind_rule),
                   serialization_format) {}

namespace {

CSSPathValue* CreatePathValue() {
  std::unique_ptr<SVGPathByteStream> path_byte_stream =
      std::make_unique<SVGPathByteStream>();
  // Need to be registered as LSan ignored, as it will be reachable and
  // separately referred to by emptyPathValue() callers.
  LEAK_SANITIZER_IGNORE_OBJECT(path_byte_stream.get());
  return MakeGarbageCollected<CSSPathValue>(std::move(path_byte_stream));
}

}  // namespace

const CSSPathValue& CSSPathValue::EmptyPathValue() {
  DEFINE_STATIC_LOCAL(Persistent<CSSPathValue>, empty, (CreatePathValue()));
  return *empty;
}

String CSSPathValue::CustomCSSText() const {
  StringBuilder result;
  result.Append("path(");
  if (style_path_->GetWindRule() == RULE_EVENODD)
    result.Append("evenodd, ");
  result.Append("\"");
  result.Append(BuildStringFromByteStream(ByteStream(), serialization_format_));
  result.Append("\")");
  return result.ToString();
}

bool CSSPathValue::Equals(const CSSPathValue& other) const {
  return ByteStream() == other.ByteStream();
}

void CSSPathValue::TraceAfterDispatch(blink::Visitor* visitor) const {
  CSSValue::TraceAfterDispatch(visitor);
}

}  // namespace cssvalue
}  // namespace blink