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// Copyright 2016 The PDFium Authors
// 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 <stdint.h>
#include <map>
#include <vector>
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/fx_string_wrappers.h"
#include "core/fxcrt/unowned_ptr.h"
class CPDF_ContentMarks;
class CPDF_Document;
class CPDF_FormObject;
class CPDF_ImageObject;
class CPDF_Object;
class CPDF_PageObject;
class CPDF_PageObjectHolder;
class CPDF_Path;
class CPDF_PathObject;
class CPDF_TextObject;
class CPDF_PageContentGenerator {
public:
explicit CPDF_PageContentGenerator(CPDF_PageObjectHolder* pObjHolder);
~CPDF_PageContentGenerator();
void GenerateContent();
bool ProcessPageObjects(fxcrt::ostringstream* buf);
private:
friend class CPDF_PageContentGeneratorTest;
void ProcessPageObject(fxcrt::ostringstream* buf, CPDF_PageObject* pPageObj);
void ProcessPathPoints(fxcrt::ostringstream* buf, CPDF_Path* pPath);
void ProcessPath(fxcrt::ostringstream* buf, CPDF_PathObject* pPathObj);
void ProcessForm(fxcrt::ostringstream* buf, CPDF_FormObject* pFormObj);
void ProcessImage(fxcrt::ostringstream* buf, CPDF_ImageObject* pImageObj);
void ProcessGraphics(fxcrt::ostringstream* buf, CPDF_PageObject* pPageObj);
void ProcessDefaultGraphics(fxcrt::ostringstream* buf);
void ProcessText(fxcrt::ostringstream* buf, CPDF_TextObject* pTextObj);
ByteString GetOrCreateDefaultGraphics() const;
ByteString RealizeResource(const CPDF_Object* pResource,
const ByteString& bsType) const;
const CPDF_ContentMarks* ProcessContentMarks(fxcrt::ostringstream* buf,
const CPDF_PageObject* pPageObj,
const CPDF_ContentMarks* pPrev);
void FinishMarks(fxcrt::ostringstream* buf,
const CPDF_ContentMarks* pContentMarks);
// Returns a map from content stream index to new stream data. Unmodified
// streams are not touched.
std::map<int32_t, fxcrt::ostringstream> GenerateModifiedStreams();
// For each entry in `new_stream_data`, adds the string buffer to the page's
// content stream.
void UpdateContentStreams(
std::map<int32_t, fxcrt::ostringstream>&& new_stream_data);
// Sets 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);
// Updates the resource dictionary for `m_pObjHolder` to account for all the
// changes.
void UpdateResourcesDict();
UnownedPtr<CPDF_PageObjectHolder> const m_pObjHolder;
UnownedPtr<CPDF_Document> const m_pDocument;
std::vector<UnownedPtr<CPDF_PageObject>> m_pageObjects;
ByteString m_DefaultGraphicsName;
};
#endif // CORE_FPDFAPI_EDIT_CPDF_PAGECONTENTGENERATOR_H_