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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 <list>
#include <memory>
#include "core/include/fpdfapi/fpdf_parser.h"
#include "core/include/fpdfapi/fpdf_resource.h"
#include "core/include/fxge/fx_dib.h"
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_PageObjectList : public std::list<std::unique_ptr<CPDF_PageObject>> {
public:
// Linear complexity, to be avoided except as needed by public APIs.
CPDF_PageObject* GetPageObjectByIndex(int index);
};
class CPDF_PageObjectHolder {
public:
CPDF_PageObjectHolder();
void ContinueParse(IFX_Pause* pPause);
FX_BOOL IsParsed() const { return m_ParseState == CONTENT_PARSED; }
CPDF_PageObjectList* GetPageObjectList() { return &m_PageObjectList; }
const CPDF_PageObjectList* GetPageObjectList() const {
return &m_PageObjectList;
}
FX_BOOL BackgroundAlphaNeeded() const { return m_bBackgroundAlphaNeeded; }
void SetBackgroundAlphaNeeded(FX_BOOL needed) {
m_bBackgroundAlphaNeeded = needed;
}
FX_BOOL HasImageMask() const { return m_bHasImageMask; }
void SetHasImageMask(FX_BOOL value) { m_bHasImageMask = value; }
void Transform(const CFX_Matrix& matrix);
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:
enum ParseState { CONTENT_NOT_PARSED, CONTENT_PARSING, CONTENT_PARSED };
void LoadTransInfo();
FX_BOOL m_bBackgroundAlphaNeeded;
FX_BOOL m_bHasImageMask;
ParseState m_ParseState;
std::unique_ptr<CPDF_ContentParser> m_pParser;
CPDF_PageObjectList m_PageObjectList;
};
class CPDF_Page : public CPDF_PageObjectHolder, public CFX_PrivateData {
public:
CPDF_Page();
~CPDF_Page();
void Load(CPDF_Document* pDocument,
CPDF_Dictionary* pPageDict,
FX_BOOL bPageCache = TRUE);
void ParseContent(CPDF_ParseOptions* pOptions);
void GetDisplayMatrix(CFX_Matrix& 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_Matrix& GetPageMatrix() const { return m_PageMatrix; }
CPDF_Object* GetPageAttr(const CFX_ByteStringC& name) const;
CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender; }
protected:
friend class CPDF_ContentParser;
void StartParse(CPDF_ParseOptions* pOptions);
FX_FLOAT m_PageWidth;
FX_FLOAT m_PageHeight;
CFX_Matrix m_PageMatrix;
CPDF_PageRenderCache* m_pPageRender;
};
class CPDF_ParseOptions {
public:
CPDF_ParseOptions();
FX_BOOL m_bTextOnly;
FX_BOOL m_bMarkedContent;
FX_BOOL m_bSeparateForm;
FX_BOOL m_bDecodeInlineImage;
};
class CPDF_Form : public CPDF_PageObjectHolder {
public:
CPDF_Form(CPDF_Document* pDocument,
CPDF_Dictionary* pPageResources,
CPDF_Stream* pFormStream,
CPDF_Dictionary* pParentResources = NULL);
~CPDF_Form();
void StartParse(CPDF_AllStates* pGraphicStates,
CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
CPDF_ParseOptions* pOptions,
int level = 0);
void ParseContent(CPDF_AllStates* pGraphicStates,
CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
CPDF_ParseOptions* pOptions,
int level = 0);
CPDF_Form* Clone() const;
};
class CPDF_PageContentGenerator {
public:
explicit CPDF_PageContentGenerator(CPDF_Page* pPage);
FX_BOOL InsertPageObject(CPDF_PageObject* pPageObject);
void GenerateContent();
void TransformContent(CFX_Matrix& matrix);
private:
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);
CPDF_Page* m_pPage;
CPDF_Document* m_pDocument;
CFX_ArrayTemplate<CPDF_PageObject*> m_pageObjects;
};
#endif // CORE_INCLUDE_FPDFAPI_FPDF_PAGE_H_
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