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