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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef COBALT_LOADER_FONT_TYPEFACE_DECODER_H_
#define COBALT_LOADER_FONT_TYPEFACE_DECODER_H_
#include <string>
#include <vector>
#include "base/callback.h"
#include "cobalt/loader/decoder.h"
#include "cobalt/render_tree/resource_provider.h"
#include "cobalt/render_tree/typeface.h"
namespace cobalt {
namespace loader {
namespace font {
// |TypefaceDecoder| handles collecting typeface data, which it provides to its
// |ResourceProvider|, which is responsible for interpreting the data and
// generating the typeface.
class TypefaceDecoder : public Decoder {
public:
typedef base::Callback<void(const scoped_refptr<render_tree::Typeface>&)>
SuccessCallback;
typedef base::Callback<void(const std::string&)> ErrorCallback;
TypefaceDecoder(render_tree::ResourceProvider* resource_provider,
const SuccessCallback& success_callback,
const ErrorCallback& error_callback);
// From Decoder.
void DecodeChunk(const char* data, size_t size) OVERRIDE;
void Finish() OVERRIDE;
bool Suspend() OVERRIDE;
void Resume(render_tree::ResourceProvider* resource_provider) OVERRIDE;
private:
void ReleaseRawData();
render_tree::ResourceProvider* resource_provider_;
const SuccessCallback success_callback_;
const ErrorCallback error_callback_;
scoped_ptr<render_tree::ResourceProvider::RawTypefaceDataVector> raw_data_;
bool is_raw_data_too_large_;
bool suspended_;
};
} // namespace font
} // namespace loader
} // namespace cobalt
#endif // COBALT_LOADER_FONT_TYPEFACE_DECODER_H_