| // 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_PAGE_CPDF_PAGEOBJECTHOLDER_H_ |
| #define CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECTHOLDER_H_ |
| |
| #include <deque> |
| #include <map> |
| #include <memory> |
| #include <set> |
| #include <vector> |
| |
| #include "core/fpdfapi/page/cpdf_transparency.h" |
| #include "core/fxcrt/fx_coordinates.h" |
| #include "core/fxcrt/fx_string.h" |
| #include "core/fxcrt/fx_system.h" |
| #include "core/fxcrt/unowned_ptr.h" |
| #include "core/fxge/dib/fx_dib.h" |
| |
| class CPDF_ContentParser; |
| class CPDF_Dictionary; |
| class CPDF_Document; |
| class CPDF_PageObject; |
| class CPDF_Stream; |
| class PauseIndicatorIface; |
| |
| // These structs are used to keep track of resources that have already been |
| // generated in the page object holder. |
| struct GraphicsData { |
| float fillAlpha; |
| float strokeAlpha; |
| BlendMode blendType; |
| |
| bool operator<(const GraphicsData& other) const; |
| }; |
| |
| struct FontData { |
| ByteString baseFont; |
| ByteString type; |
| |
| bool operator<(const FontData& other) const; |
| }; |
| |
| class CPDF_PageObjectHolder { |
| public: |
| enum class ParseState : uint8_t { kNotParsed, kParsing, kParsed }; |
| |
| using iterator = std::deque<std::unique_ptr<CPDF_PageObject>>::iterator; |
| using const_iterator = |
| std::deque<std::unique_ptr<CPDF_PageObject>>::const_iterator; |
| |
| CPDF_PageObjectHolder(CPDF_Document* pDoc, |
| CPDF_Dictionary* pDict, |
| CPDF_Dictionary* pPageResources, |
| CPDF_Dictionary* pResources); |
| virtual ~CPDF_PageObjectHolder(); |
| |
| virtual bool IsPage() const; |
| |
| void StartParse(std::unique_ptr<CPDF_ContentParser> pParser); |
| void ContinueParse(PauseIndicatorIface* pPause); |
| ParseState GetParseState() const { return m_ParseState; } |
| |
| CPDF_Document* GetDocument() const { return m_pDocument.Get(); } |
| |
| CPDF_Dictionary* GetDict() const { return m_pDict.Get(); } |
| size_t GetPageObjectCount() const { return m_PageObjectList.size(); } |
| CPDF_PageObject* GetPageObjectByIndex(size_t index) const; |
| void AppendPageObject(std::unique_ptr<CPDF_PageObject> pPageObj); |
| bool RemovePageObject(CPDF_PageObject* pPageObj); |
| bool ErasePageObjectAtIndex(size_t index); |
| |
| iterator begin() { return m_PageObjectList.begin(); } |
| const_iterator begin() const { return m_PageObjectList.begin(); } |
| |
| iterator end() { return m_PageObjectList.end(); } |
| const_iterator end() const { return m_PageObjectList.end(); } |
| |
| const CFX_Matrix& GetLastCTM() const { return m_LastCTM; } |
| const CFX_FloatRect& GetBBox() const { return m_BBox; } |
| |
| const CPDF_Transparency& GetTransparency() const { return m_Transparency; } |
| bool BackgroundAlphaNeeded() const { return m_bBackgroundAlphaNeeded; } |
| void SetBackgroundAlphaNeeded(bool needed) { |
| m_bBackgroundAlphaNeeded = needed; |
| } |
| |
| bool HasImageMask() const { return !m_MaskBoundingBoxes.empty(); } |
| const std::vector<CFX_FloatRect>& GetMaskBoundingBoxes() const { |
| return m_MaskBoundingBoxes; |
| } |
| void AddImageMaskBoundingBox(const CFX_FloatRect& box); |
| bool HasDirtyStreams() const { return !m_DirtyStreams.empty(); } |
| std::set<int32_t> TakeDirtyStreams(); |
| |
| RetainPtr<CPDF_Dictionary> m_pPageResources; |
| RetainPtr<CPDF_Dictionary> m_pResources; |
| std::map<GraphicsData, ByteString> m_GraphicsMap; |
| std::map<FontData, ByteString> m_FontsMap; |
| |
| protected: |
| void LoadTransparencyInfo(); |
| |
| CFX_FloatRect m_BBox; |
| CPDF_Transparency m_Transparency; |
| |
| private: |
| bool m_bBackgroundAlphaNeeded = false; |
| ParseState m_ParseState = ParseState::kNotParsed; |
| RetainPtr<CPDF_Dictionary> const m_pDict; |
| UnownedPtr<CPDF_Document> m_pDocument; |
| std::vector<CFX_FloatRect> m_MaskBoundingBoxes; |
| std::unique_ptr<CPDF_ContentParser> m_pParser; |
| std::deque<std::unique_ptr<CPDF_PageObject>> m_PageObjectList; |
| CFX_Matrix m_LastCTM; |
| |
| // The indexes of Content streams that are dirty and need to be regenerated. |
| std::set<int32_t> m_DirtyStreams; |
| }; |
| |
| #endif // CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECTHOLDER_H_ |