diff options
Diffstat (limited to 'core/fpdfapi/page/cpdf_streamcontentparser.h')
| -rw-r--r-- | core/fpdfapi/page/cpdf_streamcontentparser.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h new file mode 100644 index 0000000000..58008da96a --- /dev/null +++ b/core/fpdfapi/page/cpdf_streamcontentparser.h @@ -0,0 +1,225 @@ +// 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_STREAMCONTENTPARSER_H_ +#define CORE_FPDFAPI_PAGE_CPDF_STREAMCONTENTPARSER_H_ + +#include <memory> +#include <unordered_map> +#include <vector> + +#include "core/fpdfapi/page/cpdf_contentmark.h" +#include "core/fpdfapi/parser/cpdf_stream.h" +#include "core/fxcrt/fx_string.h" +#include "core/fxge/cfx_pathdata.h" + +class CPDF_AllStates; +class CPDF_Dictionary; +class CPDF_Document; +class CPDF_Font; +class CPDF_Image; +class CPDF_ImageObject; +class CPDF_PageObject; +class CPDF_PageObjectHolder; +class CPDF_StreamParser; +class CPDF_TextObject; +class CPDF_ColorSpace; +class CPDF_Pattern; + +class CPDF_StreamContentParser { + public: + CPDF_StreamContentParser(CPDF_Document* pDoc, + CPDF_Dictionary* pPageResources, + CPDF_Dictionary* pParentResources, + const CFX_Matrix* pmtContentToUser, + CPDF_PageObjectHolder* pObjectHolder, + CPDF_Dictionary* pResources, + CFX_FloatRect* pBBox, + CPDF_AllStates* pAllStates, + int level); + ~CPDF_StreamContentParser(); + + uint32_t Parse(const uint8_t* pData, uint32_t dwSize, uint32_t max_cost); + CPDF_PageObjectHolder* GetPageObjectHolder() const { return m_pObjectHolder; } + CPDF_AllStates* GetCurStates() const { return m_pCurStates.get(); } + bool IsColored() const { return m_bColored; } + const FX_FLOAT* GetType3Data() const { return m_Type3Data; } + CPDF_Font* FindFont(const CFX_ByteString& name); + + private: + struct ContentParam { + enum Type { OBJECT = 0, NUMBER, NAME }; + Type m_Type; + union { + struct { + bool m_bInteger; + union { + int m_Integer; + FX_FLOAT m_Float; + }; + } m_Number; + CPDF_Object* m_pObject; + struct { + int m_Len; + char m_Buffer[32]; + } m_Name; + }; + }; + + static const int kParamBufSize = 16; + + using OpCodes = + std::unordered_map<uint32_t, void (CPDF_StreamContentParser::*)()>; + static OpCodes InitializeOpCodes(); + + void AddNumberParam(const FX_CHAR* str, int len); + void AddObjectParam(CPDF_Object* pObj); + void AddNameParam(const FX_CHAR* name, int size); + int GetNextParamPos(); + void ClearAllParams(); + CPDF_Object* GetObject(uint32_t index); + CFX_ByteString GetString(uint32_t index); + FX_FLOAT GetNumber(uint32_t index); + int GetInteger(uint32_t index) { return (int32_t)(GetNumber(index)); } + void OnOperator(const FX_CHAR* op); + void AddTextObject(CFX_ByteString* pText, + FX_FLOAT fInitKerning, + FX_FLOAT* pKerning, + int count); + + void ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y); + void ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y); + void OnChangeTextMatrix(); + void ParsePathObject(); + void AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag); + void AddPathRect(FX_FLOAT x, FX_FLOAT y, FX_FLOAT w, FX_FLOAT h); + void AddPathObject(int FillType, bool bStroke); + CPDF_ImageObject* AddImage(UniqueStream pStream); + CPDF_ImageObject* AddImage(uint32_t streamObjNum); + CPDF_ImageObject* AddImage(CPDF_Image* pImage); + + void AddForm(CPDF_Stream* pStream); + void SetGraphicStates(CPDF_PageObject* pObj, + bool bColor, + bool bText, + bool bGraph); + CPDF_ColorSpace* FindColorSpace(const CFX_ByteString& name); + CPDF_Pattern* FindPattern(const CFX_ByteString& name, bool bShading); + CPDF_Object* FindResourceObj(const CFX_ByteString& type, + const CFX_ByteString& name); + + // Takes ownership of |pImageObj|, returns unowned pointer to it. + CPDF_ImageObject* AddImageObject(std::unique_ptr<CPDF_ImageObject> pImageObj); + + void Handle_CloseFillStrokePath(); + void Handle_FillStrokePath(); + void Handle_CloseEOFillStrokePath(); + void Handle_EOFillStrokePath(); + void Handle_BeginMarkedContent_Dictionary(); + void Handle_BeginImage(); + void Handle_BeginMarkedContent(); + void Handle_BeginText(); + void Handle_CurveTo_123(); + void Handle_ConcatMatrix(); + void Handle_SetColorSpace_Fill(); + void Handle_SetColorSpace_Stroke(); + void Handle_SetDash(); + void Handle_SetCharWidth(); + void Handle_SetCachedDevice(); + void Handle_ExecuteXObject(); + void Handle_MarkPlace_Dictionary(); + void Handle_EndImage(); + void Handle_EndMarkedContent(); + void Handle_EndText(); + void Handle_FillPath(); + void Handle_FillPathOld(); + void Handle_EOFillPath(); + void Handle_SetGray_Fill(); + void Handle_SetGray_Stroke(); + void Handle_SetExtendGraphState(); + void Handle_ClosePath(); + void Handle_SetFlat(); + void Handle_BeginImageData(); + void Handle_SetLineJoin(); + void Handle_SetLineCap(); + void Handle_SetCMYKColor_Fill(); + void Handle_SetCMYKColor_Stroke(); + void Handle_LineTo(); + void Handle_MoveTo(); + void Handle_SetMiterLimit(); + void Handle_MarkPlace(); + void Handle_EndPath(); + void Handle_SaveGraphState(); + void Handle_RestoreGraphState(); + void Handle_Rectangle(); + void Handle_SetRGBColor_Fill(); + void Handle_SetRGBColor_Stroke(); + void Handle_SetRenderIntent(); + void Handle_CloseStrokePath(); + void Handle_StrokePath(); + void Handle_SetColor_Fill(); + void Handle_SetColor_Stroke(); + void Handle_SetColorPS_Fill(); + void Handle_SetColorPS_Stroke(); + void Handle_ShadeFill(); + void Handle_SetCharSpace(); + void Handle_MoveTextPoint(); + void Handle_MoveTextPoint_SetLeading(); + void Handle_SetFont(); + void Handle_ShowText(); + void Handle_ShowText_Positioning(); + void Handle_SetTextLeading(); + void Handle_SetTextMatrix(); + void Handle_SetTextRenderMode(); + void Handle_SetTextRise(); + void Handle_SetWordSpace(); + void Handle_SetHorzScale(); + void Handle_MoveToNextLine(); + void Handle_CurveTo_23(); + void Handle_SetLineWidth(); + void Handle_Clip(); + void Handle_EOClip(); + void Handle_CurveTo_13(); + void Handle_NextLineShowText(); + void Handle_NextLineShowText_Space(); + void Handle_Invalid(); + + CPDF_Document* const m_pDocument; + CPDF_Dictionary* m_pPageResources; + CPDF_Dictionary* m_pParentResources; + CPDF_Dictionary* m_pResources; + CPDF_PageObjectHolder* m_pObjectHolder; + int m_Level; + CFX_Matrix m_mtContentToUser; + CFX_FloatRect m_BBox; + ContentParam m_ParamBuf[kParamBufSize]; + uint32_t m_ParamStartPos; + uint32_t m_ParamCount; + CPDF_StreamParser* m_pSyntax; + std::unique_ptr<CPDF_AllStates> m_pCurStates; + CPDF_ContentMark m_CurContentMark; + std::vector<std::unique_ptr<CPDF_TextObject>> m_ClipTextList; + CPDF_TextObject* m_pLastTextObject; + FX_FLOAT m_DefFontSize; + FX_PATHPOINT* m_pPathPoints; + int m_PathPointCount; + int m_PathAllocSize; + FX_FLOAT m_PathStartX; + FX_FLOAT m_PathStartY; + FX_FLOAT m_PathCurrentX; + FX_FLOAT m_PathCurrentY; + uint8_t m_PathClipType; + CFX_ByteString m_LastImageName; + CPDF_Image* m_pLastImage; + CPDF_Dictionary* m_pLastImageDict; + CPDF_Dictionary* m_pLastCloneImageDict; + bool m_bColored; + FX_FLOAT m_Type3Data[6]; + bool m_bResourceMissing; + std::vector<std::unique_ptr<CPDF_AllStates>> m_StateStack; +}; + +#endif // CORE_FPDFAPI_PAGE_CPDF_STREAMCONTENTPARSER_H_ |