cc/debug/traced_picture.cc

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/debug/traced_picture.h"
   6
   7 #include "base/json/json_writer.h"
   8 #include "base/strings/stringprintf.h"
   9 #include "base/values.h"
  10
  11 namespace cc {
  12
  13 TracedPicture::TracedPicture(scoped_refptr<const Picture> picture)
  14     : picture_(picture), is_alias_(false) {}
  15
  16 TracedPicture::~TracedPicture() {
  17 }
  18
  19 scoped_refptr<base::trace_event::ConvertableToTraceFormat>
  20 TracedPicture::AsTraceablePicture(const Picture* picture) {
  21   return scoped_refptr<base::trace_event::ConvertableToTraceFormat>(
  22       new TracedPicture(picture));
  23 }
  24
  25 scoped_refptr<base::trace_event::ConvertableToTraceFormat>
  26 TracedPicture::AsTraceablePictureAlias(const Picture* original) {
  27   scoped_refptr<TracedPicture> ptr = new TracedPicture(original);
  28   ptr->is_alias_ = true;
  29   return scoped_refptr<base::trace_event::ConvertableToTraceFormat>(ptr);
  30 }
  31
  32 void TracedPicture::AppendAsTraceFormat(std::string* out) const {
  33   if (is_alias_)
  34     AppendPictureAlias(out);
  35   else
  36     AppendPicture(out);
  37 }
  38
  39 void TracedPicture::AppendPictureAlias(std::string* out) const {
  40   scoped_ptr<base::DictionaryValue> alias(new base::DictionaryValue());
  41   alias->SetString("id_ref", base::StringPrintf("%p", picture_.get()));
  42
  43   base::DictionaryValue res;
  44   res.Set("alias", alias.release());
  45   std::string tmp;
  46   base::JSONWriter::Write(res, &tmp);
  47   out->append(tmp);
  48 }
  49
  50 void TracedPicture::AppendPicture(std::string* out) const {
  51   std::string tmp;
  52   base::JSONWriter::Write(*picture_->AsValue(), &tmp);
  53   out->append(tmp);
  54 }
  55
  56 }  // namespace cc