1 // Copyright 2016 The PDFium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECT_H_ 8 #define CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECT_H_ 9 10 #include <stdint.h> 11 12 #include "core/fpdfapi/page/cpdf_contentmarks.h" 13 #include "core/fpdfapi/page/cpdf_graphicstates.h" 14 #include "core/fxcrt/bytestring.h" 15 #include "core/fxcrt/fx_coordinates.h" 16 17 class CPDF_FormObject; 18 class CPDF_ImageObject; 19 class CPDF_PathObject; 20 class CPDF_ShadingObject; 21 class CPDF_TextObject; 22 23 // Represents an object within the page, like a form or image. Not to be 24 // confused with the PDF spec's page object that lives in a page tree, which is 25 // represented by CPDF_Page. 26 class CPDF_PageObject : public CPDF_GraphicStates { 27 public: 28 // Values must match corresponding values in //public. 29 enum class Type { 30 kText = 1, 31 kPath, 32 kImage, 33 kShading, 34 kForm, 35 }; 36 37 static constexpr int32_t kNoContentStream = -1; 38 39 explicit CPDF_PageObject(int32_t content_stream); 40 CPDF_PageObject(const CPDF_PageObject& src) = delete; 41 CPDF_PageObject& operator=(const CPDF_PageObject& src) = delete; 42 ~CPDF_PageObject() override; 43 44 virtual Type GetType() const = 0; 45 virtual void Transform(const CFX_Matrix& matrix) = 0; 46 virtual bool IsText() const; 47 virtual bool IsPath() const; 48 virtual bool IsImage() const; 49 virtual bool IsShading() const; 50 virtual bool IsForm() const; 51 virtual CPDF_TextObject* AsText(); 52 virtual const CPDF_TextObject* AsText() const; 53 virtual CPDF_PathObject* AsPath(); 54 virtual const CPDF_PathObject* AsPath() const; 55 virtual CPDF_ImageObject* AsImage(); 56 virtual const CPDF_ImageObject* AsImage() const; 57 virtual CPDF_ShadingObject* AsShading(); 58 virtual const CPDF_ShadingObject* AsShading() const; 59 virtual CPDF_FormObject* AsForm(); 60 virtual const CPDF_FormObject* AsForm() const; 61 SetDirty(bool value)62 void SetDirty(bool value) { m_bDirty = value; } IsDirty()63 bool IsDirty() const { return m_bDirty; } 64 void TransformClipPath(const CFX_Matrix& matrix); 65 void TransformGeneralState(const CFX_Matrix& matrix); 66 SetOriginalRect(const CFX_FloatRect & rect)67 void SetOriginalRect(const CFX_FloatRect& rect) { m_OriginalRect = rect; } GetOriginalRect()68 const CFX_FloatRect& GetOriginalRect() const { return m_OriginalRect; } SetRect(const CFX_FloatRect & rect)69 void SetRect(const CFX_FloatRect& rect) { m_Rect = rect; } GetRect()70 const CFX_FloatRect& GetRect() const { return m_Rect; } 71 FX_RECT GetBBox() const; 72 FX_RECT GetTransformedBBox(const CFX_Matrix& matrix) const; 73 GetContentMarks()74 CPDF_ContentMarks* GetContentMarks() { return &m_ContentMarks; } GetContentMarks()75 const CPDF_ContentMarks* GetContentMarks() const { return &m_ContentMarks; } SetContentMarks(const CPDF_ContentMarks & marks)76 void SetContentMarks(const CPDF_ContentMarks& marks) { 77 m_ContentMarks = marks; 78 } 79 80 // Get what content stream the object was parsed from in its page. This number 81 // is the index of the content stream in the "Contents" array, or 0 if there 82 // is a single content stream. If the object is newly created, 83 // |kNoContentStream| is returned. 84 // 85 // If the object is spread among more than one content stream, this is the 86 // index of the last stream. GetContentStream()87 int32_t GetContentStream() const { return m_ContentStream; } SetContentStream(int32_t new_content_stream)88 void SetContentStream(int32_t new_content_stream) { 89 m_ContentStream = new_content_stream; 90 } 91 GetResourceName()92 const ByteString& GetResourceName() const { return m_ResourceName; } SetResourceName(const ByteString & resource_name)93 void SetResourceName(const ByteString& resource_name) { 94 m_ResourceName = resource_name; 95 } 96 GetGraphicsResourceName()97 const ByteString& GetGraphicsResourceName() const { 98 return m_GraphicsResourceName; 99 } SetGraphicsResourceName(const ByteString & resource_name)100 void SetGraphicsResourceName(const ByteString& resource_name) { 101 m_GraphicsResourceName = resource_name; 102 } 103 104 protected: 105 void CopyData(const CPDF_PageObject* pSrcObject); 106 107 private: 108 CFX_FloatRect m_Rect; 109 CFX_FloatRect m_OriginalRect; 110 CPDF_ContentMarks m_ContentMarks; 111 bool m_bDirty = false; 112 int32_t m_ContentStream; 113 ByteString m_ResourceName; // The resource name for this object. 114 ByteString m_GraphicsResourceName; // Like `m_ResourceName` but for graphics. 115 }; 116 117 #endif // CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECT_H_ 118