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// 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.
#include <map>
#include <memory>
#include <vector>
#include "core/fpdfapi/page/cpdf_pageobjectlist.h"
#include "core/fxcrt/cfx_unowned_ptr.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_system.h"
class IFX_Pause;
class CPDF_Dictionary;
class CPDF_Stream;
class CPDF_Document;
class CPDF_ContentParser;
#define PDFTRANS_GROUP 0x0100
#define PDFTRANS_ISOLATED 0x0200
#define PDFTRANS_KNOCKOUT 0x0400
// These structs are used to keep track of resources that have already been
// generated in the page object holder.
struct GraphicsData {
float fillAlpha;
float strokeAlpha;
int blendType;
bool operator<(const GraphicsData& other) const;
struct FontData {
CFX_ByteString baseFont;
CFX_ByteString type;
bool operator<(const FontData& other) const;
class CPDF_PageObjectHolder {
CPDF_PageObjectHolder(CPDF_Document* pDoc, CPDF_Dictionary* pFormDict);
virtual ~CPDF_PageObjectHolder();
virtual bool IsPage() const;
void ContinueParse(IFX_Pause* pPause);
bool IsParsed() const { return m_ParseState == CONTENT_PARSED; }
CPDF_PageObjectList* GetPageObjectList() { return &m_PageObjectList; }
const CPDF_PageObjectList* GetPageObjectList() const {
return &m_PageObjectList;
const CFX_Matrix& GetLastCTM() const { return m_LastCTM; }
bool BackgroundAlphaNeeded() const { return m_bBackgroundAlphaNeeded; }
void SetBackgroundAlphaNeeded(bool needed) {
m_bBackgroundAlphaNeeded = needed;
bool HasImageMask() const { return !m_MaskBoundingBoxes.empty(); }
const std::vector<CFX_FloatRect>& GetMaskBoundingBoxes() const {
return m_MaskBoundingBoxes;
void AddImageMaskBoundingBox(const CFX_FloatRect& box);
void Transform(const CFX_Matrix& matrix);
CFX_FloatRect CalcBoundingBox() const;
CFX_UnownedPtr<CPDF_Dictionary> m_pFormDict;
CFX_UnownedPtr<CPDF_Stream> m_pFormStream;
CFX_UnownedPtr<CPDF_Document> m_pDocument;
CFX_UnownedPtr<CPDF_Dictionary> m_pPageResources;
CFX_UnownedPtr<CPDF_Dictionary> m_pResources;
std::map<GraphicsData, CFX_ByteString> m_GraphicsMap;
std::map<FontData, CFX_ByteString> m_FontsMap;
CFX_FloatRect m_BBox;
int m_Transparency;
void LoadTransInfo();
bool m_bBackgroundAlphaNeeded;
std::vector<CFX_FloatRect> m_MaskBoundingBoxes;
ParseState m_ParseState;
std::unique_ptr<CPDF_ContentParser> m_pParser;
CPDF_PageObjectList m_PageObjectList;
CFX_Matrix m_LastCTM;