| // 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_ |