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// Copyright 2014 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_INCLUDE_FPDFAPI_FPDF_PAGE_H_
#define CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
#include "../fxge/fx_dib.h"
#include "fpdf_parser.h"
#include "fpdf_resource.h"
class CPDF_PageObjects;
class CPDF_Page;
class CPDF_Form;
class CPDF_ParseOptions;
class CPDF_PageObject;
class CPDF_PageRenderCache;
class CPDF_StreamFilter;
class CPDF_AllStates;
class CPDF_ContentParser;
class CPDF_StreamContentParser;
#define PDFTRANS_GROUP 0x0100
#define PDFTRANS_ISOLATED 0x0200
#define PDFTRANS_KNOCKOUT 0x0400
class CPDF_PageObjects
{
public:
CPDF_PageObjects(bool bReleaseMembers = true);
~CPDF_PageObjects();
void ContinueParse(IFX_Pause* pPause);
bool IsParsed() const
{
return m_ParseState == CONTENT_PARSED;
}
FX_POSITION GetFirstObjectPosition() const
{
return m_ObjectList.GetHeadPosition();
}
FX_POSITION GetLastObjectPosition() const
{
return m_ObjectList.GetTailPosition();
}
CPDF_PageObject* GetNextObject(FX_POSITION& pos) const
{
return (CPDF_PageObject*)m_ObjectList.GetNext(pos);
}
CPDF_PageObject* GetPrevObject(FX_POSITION& pos) const
{
return (CPDF_PageObject*)m_ObjectList.GetPrev(pos);
}
CPDF_PageObject* GetObjectAt(FX_POSITION pos) const
{
return (CPDF_PageObject*)m_ObjectList.GetAt(pos);
}
FX_DWORD CountObjects() const
{
return m_ObjectList.GetCount();
}
int GetObjectIndex(CPDF_PageObject* pObj) const;
CPDF_PageObject* GetObjectByIndex(int index) const;
FX_POSITION InsertObject(FX_POSITION posInsertAfter, CPDF_PageObject* pNewObject);
void Transform(const CFX_AffineMatrix& matrix);
bool BackgroundAlphaNeeded() const
{
return m_bBackgroundAlphaNeeded;
}
CFX_FloatRect CalcBoundingBox() const;
CPDF_Dictionary* m_pFormDict;
CPDF_Stream* m_pFormStream;
CPDF_Document* m_pDocument;
CPDF_Dictionary* m_pPageResources;
CPDF_Dictionary* m_pResources;
CFX_FloatRect m_BBox;
int m_Transparency;
protected:
friend class CPDF_ContentParser;
friend class CPDF_StreamContentParser;
friend class CPDF_AllStates;
enum ParseState {
CONTENT_NOT_PARSED,
CONTENT_PARSING,
CONTENT_PARSED
};
void LoadTransInfo();
void ClearCacheObjects();
CFX_PtrList m_ObjectList;
bool m_bBackgroundAlphaNeeded;
bool m_bReleaseMembers;
CPDF_ContentParser* m_pParser;
ParseState m_ParseState;
};
class CPDF_Page : public CPDF_PageObjects, public CFX_PrivateData
{
public:
CPDF_Page();
~CPDF_Page();
void Load(CPDF_Document* pDocument, CPDF_Dictionary* pPageDict, bool bPageCache = true);
void StartParse(CPDF_ParseOptions* pOptions = NULL, bool bReParse = false);
void ParseContent(CPDF_ParseOptions* pOptions = NULL, bool bReParse = false);
void GetDisplayMatrix(CFX_AffineMatrix& matrix, int xPos, int yPos,
int xSize, int ySize, int iRotate) const;
FX_FLOAT GetPageWidth() const
{
return m_PageWidth;
}
FX_FLOAT GetPageHeight() const
{
return m_PageHeight;
}
CFX_FloatRect GetPageBBox() const
{
return m_BBox;
}
const CFX_AffineMatrix& GetPageMatrix() const
{
return m_PageMatrix;
}
CPDF_Object* GetPageAttr(const CFX_ByteStringC& name) const;
CPDF_PageRenderCache* GetRenderCache() const
{
return m_pPageRender;
}
void ClearRenderCache();
protected:
friend class CPDF_ContentParser;
FX_FLOAT m_PageWidth;
FX_FLOAT m_PageHeight;
CFX_AffineMatrix m_PageMatrix;
CPDF_PageRenderCache* m_pPageRender;
};
class CPDF_ParseOptions
{
public:
CPDF_ParseOptions();
bool m_bTextOnly;
bool m_bMarkedContent;
bool m_bSeparateForm;
bool m_bDecodeInlineImage;
};
class CPDF_Form : public CPDF_PageObjects
{
public:
CPDF_Form(CPDF_Document* pDocument, CPDF_Dictionary* pPageResources, CPDF_Stream* pFormStream, CPDF_Dictionary* pParentResources = NULL);
~CPDF_Form();
void StartParse(CPDF_AllStates* pGraphicStates, CFX_AffineMatrix* pParentMatrix,
CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level = 0);
void ParseContent(CPDF_AllStates* pGraphicStates, CFX_AffineMatrix* pParentMatrix,
CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level = 0);
CPDF_Form* Clone() const;
};
class CPDF_PageContentGenerate
{
public:
CPDF_PageContentGenerate(CPDF_Page* pPage);
~CPDF_PageContentGenerate();
bool InsertPageObject(CPDF_PageObject* pPageObject);
void GenerateContent();
void TransformContent(CFX_Matrix& matrix);
protected:
void ProcessImage(CFX_ByteTextBuf& buf, CPDF_ImageObject* pImageObj);
void ProcessForm(CFX_ByteTextBuf& buf, const uint8_t* data, FX_DWORD size, CFX_Matrix& matrix);
CFX_ByteString RealizeResource(CPDF_Object* pResourceObj, const FX_CHAR* szType);
private:
CPDF_Page* m_pPage;
CPDF_Document* m_pDocument;
CFX_PtrArray m_pageObjects;
};
#endif // CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
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