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// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTGENERATOR_H_
#define CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTGENERATOR_H_
#include <map>
#include <memory>
#include <sstream>
#include <vector>
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/unowned_ptr.h"
class CPDF_Document;
class CPDF_ImageObject;
class CPDF_Object;
class CPDF_PageObject;
class CPDF_PageObjectHolder;
class CPDF_PathObject;
class CPDF_TextObject;
class CPDF_PageContentGenerator {
public:
explicit CPDF_PageContentGenerator(CPDF_PageObjectHolder* pObjHolder);
~CPDF_PageContentGenerator();
void GenerateContent();
bool ProcessPageObjects(std::ostringstream* buf);
private:
friend class CPDF_PageContentGeneratorTest;
void ProcessPath(std::ostringstream* buf, CPDF_PathObject* pPathObj);
void ProcessImage(std::ostringstream* buf, CPDF_ImageObject* pImageObj);
void ProcessGraphics(std::ostringstream* buf, CPDF_PageObject* pPageObj);
void ProcessDefaultGraphics(std::ostringstream* buf);
void ProcessText(std::ostringstream* buf, CPDF_TextObject* pTextObj);
ByteString RealizeResource(const CPDF_Object* pResource,
const ByteString& bsType);
// Returns a map from content stream index to new stream data. Unmodified
// streams are not touched.
std::map<int32_t, std::unique_ptr<std::ostringstream>>
GenerateModifiedStreams();
// Generate new stream data with all dirty page objects.
bool GenerateStreamWithNewObjects(std::ostringstream* buf);
// Add buffer as a stream in page's 'Contents'
void UpdateContentStreams(
std::map<int32_t, std::unique_ptr<std::ostringstream>>* buf);
// Set the stream index of all page objects with stream index ==
// |CPDF_PageObject::kNoContentStream|. These are new objects that had not
// been parsed from or written to any content stream yet.
void UpdateStreamlessPageObjects(int new_content_stream_index);
UnownedPtr<CPDF_PageObjectHolder> const m_pObjHolder;
UnownedPtr<CPDF_Document> const m_pDocument;
std::vector<UnownedPtr<CPDF_PageObject>> m_pageObjects;
};
#endif // CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTGENERATOR_H_
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