summaryrefslogtreecommitdiff
path: root/core/include/fpdfapi/fpdf_page.h
blob: 2fc9de8566dbe6f331c97d4e9a3f0a40737f7c6f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
// 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_