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Side by Side Diff: public/fpdf_dataavail.h

Issue 1128003005: Tidy public/ directory. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Missed one. Created 5 years, 7 months ago
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1 // Copyright 2014 PDFium Authors. All rights reserved. 1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 6
7 #ifndef _FPDF_DATAAVAIL_H_ 7 #ifndef PUBLIC_FPDF_DATAAVAIL_H_
8 #define _FPDF_DATAAVAIL_H_ 8 #define PUBLIC_FPDF_DATAAVAIL_H_
9 9
10 #include <stddef.h> // For size_t. 10 #include <stddef.h> // For size_t.
11 11
12 #include "fpdfview.h" 12 #include "fpdfview.h"
13 13
14 /** The result of the process which check linearized PDF. */ 14 /** The result of the process which check linearized PDF. */
15 #define FSDK_IS_LINEARIZED» » » 1 15 #define FSDK_IS_LINEARIZED 1
16 #define FSDK_NOT_LINEARIZED» » » 0 16 #define FSDK_NOT_LINEARIZED 0
17 #define FSDK_UNKNOW_LINEARIZED» » -1 17 #define FSDK_UNKNOW_LINEARIZED -1
18 18
19 19
20 #ifdef __cplusplus 20 #ifdef __cplusplus
21 extern "C" { 21 extern "C" {
22 #endif 22 #endif
23 23
24 /** 24 /**
25 * Interface: FX_FILEAVAIL 25 * Interface: FX_FILEAVAIL
26 *» » » Interface for checking whether the section of the file i s available. 26 * Interface for checking whether the section of the file is available.
27 */ 27 */
28 typedef struct _FX_FILEAVAIL { 28 typedef struct _FX_FILEAVAIL {
29 » /** 29 /**
30 » * Version number of the interface. Currently must be 1. 30 * Version number of the interface. Currently must be 1.
31 » */ 31 */
32 » int version; 32 int version;
33 33
34 » /** 34 /**
35 » * Method: IsDataAvail 35 * Method: IsDataAvail
36 » *» » Report whether the specified data section is available. A section is available only if all bytes in the section is available. 36 * Report whether the specified data section is available. A section is available only if all bytes in the section is available.
37 » * Interface Version: 37 * Interface Version:
38 » *» » 1 38 * 1
39 » * Implementation Required: 39 * Implementation Required:
40 » *» » Yes 40 * Yes
41 » * Parameters: 41 * Parameters:
42 » *» » pThis» » -» Pointer to the interface structu re itself. 42 * pThis - Pointer to the interface structure itself.
43 » *» » offset» » -» The offset of the data section i n the file. 43 * offset - The offset of the data section in the file.
44 » *» » size» » -» The size of the data section 44 * size - The size of the data section
45 » * Return Value: 45 * Return Value:
46 » *» » true means the specified data section is available. 46 * true means the specified data section is available.
47 » * Comments: 47 * Comments:
48 » *» » Called by Foxit SDK to check whether the data section is ready. 48 * Called by Foxit SDK to check whether the data section is ready.
49 » */ 49 */
50 » FPDF_BOOL (*IsDataAvail)(struct _FX_FILEAVAIL* pThis, size_t offset, siz e_t size); 50 FPDF_BOOL (*IsDataAvail)(struct _FX_FILEAVAIL* pThis, size_t offset, size_t size);
51 } FX_FILEAVAIL; 51 } FX_FILEAVAIL;
52 52
53 typedef void* FPDF_AVAIL; 53 typedef void* FPDF_AVAIL;
54 54
55 /** 55 /**
56 * Function: FPDFAvail_Create 56 * Function: FPDFAvail_Create
57 *» » » Create a document availability provider. 57 * Create a document availability provider.
58 * 58 *
59 * Parameters: 59 * Parameters:
60 *» » » file_avail» -» Pointer to file availability int erface to check availability of file data. 60 * file_avail - Pointer to file availability interface to check avai lability of file data.
61 *» » » file» » -» Pointer to a file access interfa ce for reading data from file. 61 * file - Pointer to a file access interface for reading data from file.
62 * Return value: 62 * Return value:
63 *» » » A handle to the document availability provider. NULL for error. 63 * A handle to the document availability provider. NULL for error.
64 * Comments: 64 * Comments:
65 *» » » Application must call FPDFAvail_Destroy when done with t he availability provider. 65 * Application must call FPDFAvail_Destroy when done with the availabil ity provider.
66 */ 66 */
67 DLLEXPORT FPDF_AVAIL STDCALL FPDFAvail_Create(FX_FILEAVAIL* file_avail, FPDF_FIL EACCESS* file); 67 DLLEXPORT FPDF_AVAIL STDCALL FPDFAvail_Create(FX_FILEAVAIL* file_avail, FPDF_FIL EACCESS* file);
68 68
69 /** 69 /**
70 * Function: FPDFAvail_Destroy 70 * Function: FPDFAvail_Destroy
71 *» » » Destroy a document availibity provider. 71 * Destroy a document availibity provider.
72 * 72 *
73 * Parameters: 73 * Parameters:
74 *» » » avail» » -» Handle to document availability provider returned by FPDFAvail_Create 74 * avail - Handle to document availability provider returned by FPDFAvail_Create
75 * Return Value: 75 * Return Value:
76 *» » » None. 76 * None.
77 */ 77 */
78 DLLEXPORT void STDCALL FPDFAvail_Destroy(FPDF_AVAIL avail); 78 DLLEXPORT void STDCALL FPDFAvail_Destroy(FPDF_AVAIL avail);
79 79
80 /** 80 /**
81 * Interface: FX_DOWNLOADHINTS 81 * Interface: FX_DOWNLOADHINTS
82 *» » » Download hints interface. Used to receive hints for furt her downloading. 82 * Download hints interface. Used to receive hints for further download ing.
83 */ 83 */
84 typedef struct _FX_DOWNLOADHINTS { 84 typedef struct _FX_DOWNLOADHINTS {
85 » /** 85 /**
86 » * Version number of the interface. Currently must be 1. 86 * Version number of the interface. Currently must be 1.
87 » */ 87 */
88 » int version; 88 int version;
89 89
90 » /** 90 /**
91 » * Method: AddSegment 91 * Method: AddSegment
92 » *» » Add a section to be downloaded. 92 * Add a section to be downloaded.
93 » * Interface Version: 93 * Interface Version:
94 » *» » 1 94 * 1
95 » * Implementation Required: 95 * Implementation Required:
96 » *» » Yes 96 * Yes
97 » * Parameters: 97 * Parameters:
98 » *» » pThis» » -» Pointer to the interface structu re itself. 98 * pThis - Pointer to the interface structure itself.
99 » *» » offset» » -» The offset of the hint reported to be downloaded. 99 * offset - The offset of the hint reported to be downloaded.
100 » *» » size» » -» The size of the hint reported to be downloaded. 100 * size - The size of the hint reported to be downloaded.
101 » * Return Value: 101 * Return Value:
102 » *» » None. 102 * None.
103 » * Comments: 103 * Comments:
104 » *» » Called by Foxit SDK to report some downloading hints for download manager. 104 * Called by Foxit SDK to report some downloading hints for download ma nager.
105 » *» » The position and size of section may be not accurate, pa rt of the section might be already available. 105 * The position and size of section may be not accurate, part of the se ction might be already available.
106 » *» » The download manager must deal with that to maximize dow nload efficiency. 106 * The download manager must deal with that to maximize download effici ency.
107 » */ 107 */
108 » void (*AddSegment)(struct _FX_DOWNLOADHINTS* pThis, size_t offset, size_ t size); 108 void (*AddSegment)(struct _FX_DOWNLOADHINTS* pThis, size_t offset, size_t si ze);
109 } FX_DOWNLOADHINTS; 109 } FX_DOWNLOADHINTS;
110 110
111 /** 111 /**
112 * Function: FPDFAvail_IsDocAvail 112 * Function: FPDFAvail_IsDocAvail
113 *» » » Check whether the document is ready for loading, if not, get download hints. 113 * Check whether the document is ready for loading, if not, get downloa d hints.
114 * 114 *
115 * Parameters: 115 * Parameters:
116 *» » » avail» » -» Handle to document availability provider returned by FPDFAvail_Create 116 * avail - Handle to document availability provider returned by FPDFAvail_Create
117 *» » » hints» » -» Pointer to a download hints inte rface, receiving generated hints 117 * hints - Pointer to a download hints interface, receiving gen erated hints
118 * Return value: 118 * Return value:
119 *» » » Non-zero for page is fully available, 0 for page not yet available. 119 * Non-zero for page is fully available, 0 for page not yet available.
120 * Comments: 120 * Comments:
121 *» » » The application should call this function whenever new d ata arrived, and process all the 121 * The application should call this function whenever new data arrived, and process all the
122 *» » » generated download hints if any, until the function retu rns non-zero value. Then the 122 * generated download hints if any, until the function returns non-zero value. Then the
123 *» » » application can call FPDFAvail_GetDocument() to get a do cument handle. 123 * application can call FPDFAvail_GetDocument() to get a document handl e.
124 */ 124 */
125 DLLEXPORT int STDCALL FPDFAvail_IsDocAvail(FPDF_AVAIL avail, FX_DOWNLOADHINTS* h ints); 125 DLLEXPORT int STDCALL FPDFAvail_IsDocAvail(FPDF_AVAIL avail, FX_DOWNLOADHINTS* h ints);
126 126
127 /** 127 /**
128 * Function: FPDFAvail_GetDocument 128 * Function: FPDFAvail_GetDocument
129 *» » » Get document from the availability provider. 129 * Get document from the availability provider.
130 * 130 *
131 * Parameters: 131 * Parameters:
132 *» » » avail» » -» Handle to document availability provider returned by FPDFAvail_Create 132 * avail - Handle to document availability provider returned by FPDFAvail_Create
133 * password» -» Optional password for decrypting the PDF file. 133 * password - Optional password for decrypting the PDF file.
134 * Return value: 134 * Return value:
135 *» » » Handle to the document. 135 * Handle to the document.
136 * Comments: 136 * Comments:
137 *» » » After FPDFAvail_IsDocAvail() returns TRUE, the applicati on should call this function to 137 * After FPDFAvail_IsDocAvail() returns TRUE, the application should ca ll this function to
138 *» » » get the document handle. To close the document, use FPDF _CloseDocument function. 138 * get the document handle. To close the document, use FPDF_CloseDocume nt function.
139 */ 139 */
140 DLLEXPORT FPDF_DOCUMENT STDCALL FPDFAvail_GetDocument(FPDF_AVAIL avail, 140 DLLEXPORT FPDF_DOCUMENT STDCALL FPDFAvail_GetDocument(FPDF_AVAIL avail,
141 FPDF_BYTESTRING password); 141 FPDF_BYTESTRING password);
142 142
143 /** 143 /**
144 * Function: FPDFAvail_GetFirstPageNum 144 * Function: FPDFAvail_GetFirstPageNum
145 *» » » Get page number for the first available page in a linear ized PDF 145 * Get page number for the first available page in a linearized PDF
146 * 146 *
147 * Parameters: 147 * Parameters:
148 *» » » doc» » » -» A document handle return ed by FPDFAvail_GetDocument 148 * doc - A document handle returned by FPDFAvail_GetDocument
149 * Return Value: 149 * Return Value:
150 *» » » Zero-based index for the first available page. 150 * Zero-based index for the first available page.
151 * Comments: 151 * Comments:
152 *» » » For most linearized PDFs, the first available page would be just the first page, however, 152 * For most linearized PDFs, the first available page would be just the first page, however,
153 *» » » some PDFs might make other page to be the first availabl e page. 153 * some PDFs might make other page to be the first available page.
154 *» » » For non-linearized PDF, this function will always return zero. 154 * For non-linearized PDF, this function will always return zero.
155 */ 155 */
156 DLLEXPORT int STDCALL FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc); 156 DLLEXPORT int STDCALL FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc);
157 157
158 /** 158 /**
159 * Function: FPDFAvail_IsPageAvail 159 * Function: FPDFAvail_IsPageAvail
160 *» » » Check whether a page is ready for loading, if not, get d ownload hints. 160 * Check whether a page is ready for loading, if not, get download hint s.
161 * 161 *
162 * Parameters: 162 * Parameters:
163 *» » » avail» » -» Handle to document availability provider returned by FPDFAvail_Create 163 * avail - Handle to document availability provider returned by FPDFAvail_Create
164 *» » » page_index» -» Index number of the page. 0 for the first page. 164 * page_index - Index number of the page. 0 for the first page.
165 *» » » hints» » -» Pointer to a download hints inte rface, receiving generated hints 165 * hints - Pointer to a download hints interface, receiving gen erated hints
166 * Return value: 166 * Return value:
167 *» » » Non-zero for page is fully available, 0 for page not yet available. 167 * Non-zero for page is fully available, 0 for page not yet available.
168 * Comments: 168 * Comments:
169 *» » » This function call be called only after FPDFAvail_GetDoc ument if called. 169 * This function call be called only after FPDFAvail_GetDocument if cal led.
170 *» » » The application should call this function whenever new d ata arrived, and process all the 170 * The application should call this function whenever new data arrived, and process all the
171 *» » » generated download hints if any, until the function retu rns non-zero value. Then the 171 * generated download hints if any, until the function returns non-zero value. Then the
172 *» » » application can perform page loading. 172 * application can perform page loading.
173 */ 173 */
174 DLLEXPORT int STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail, int page_index, FX _DOWNLOADHINTS* hints); 174 DLLEXPORT int STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail, int page_index, FX _DOWNLOADHINTS* hints);
175 175
176 /** 176 /**
177 * Function: FPDFAvail_ISFormAvail 177 * Function: FPDFAvail_ISFormAvail
178 *» » » Check whether Form data is ready for init, if not, get d ownload hints. 178 * Check whether Form data is ready for init, if not, get download hint s.
179 * 179 *
180 * Parameters: 180 * Parameters:
181 *» » » avail» » -» Handle to document availability provider returned by FPDFAvail_Create 181 * avail - Handle to document availability provider returned by FPDFAvail_Create
182 *» » » hints» » -» Pointer to a download hints inte rface, receiving generated hints 182 * hints - Pointer to a download hints interface, receiving gen erated hints
183 * Return value: 183 * Return value:
184 *» » » Non-zero for Form data is fully available, 0 for Form da ta not yet available. 184 * Non-zero for Form data is fully available, 0 for Form data not yet a vailable.
185 *» » » Details: -1 - error, the input parameter not correct, su ch as hints is null. 185 * Details: -1 - error, the input parameter not correct, such as hints is null.
186 *» » » » » 0 - data not available 186 * 0 - data not available
187 *» » » » » 1 - data available 187 * 1 - data available
188 *» » » » » 2 - no form data.» » » » 188 * 2 - no form data.
189 * Comments: 189 * Comments:
190 *» » » This function call be called only after FPDFAvail_GetDoc ument if called. 190 * This function call be called only after FPDFAvail_GetDocument if cal led.
191 *» » » The application should call this function whenever new d ata arrived, and process all the 191 * The application should call this function whenever new data arrived, and process all the
192 *» » » generated download hints if any, until the function retu rns non-zero value. Then the 192 * generated download hints if any, until the function returns non-zero value. Then the
193 *» » » application can perform page loading. Recommend to call FPDFDOC_InitFormFillEnvironment 193 * application can perform page loading. Recommend to call FPDFDOC_Init FormFillEnvironment
194 *» » » after the function returns non-zero value. 194 * after the function returns non-zero value.
195 */ 195 */
196 DLLEXPORT int STDCALL FPDFAvail_IsFormAvail(FPDF_AVAIL avail, FX_DOWNLOADHINTS* hints); 196 DLLEXPORT int STDCALL FPDFAvail_IsFormAvail(FPDF_AVAIL avail, FX_DOWNLOADHINTS* hints);
197 197
198 /** 198 /**
199 * Function: FPDFAvail_IsLinearized 199 * Function: FPDFAvail_IsLinearized
200 *» » » To check whether a document is Linearized PDF file. 200 * To check whether a document is Linearized PDF file.
201 * 201 *
202 * Parameters: 202 * Parameters:
203 *» » » avail» » -» Handle to document availability provider returned by FPDFAvail_Create 203 * avail - Handle to document availability provider returned by FPDFAvail_Create
204 * Return value: 204 * Return value:
205 *» » » return TRUE means the document is linearized PDF else no t. 205 * return TRUE means the document is linearized PDF else not.
206 *» » » FSDK_IS_LINEARIZED is a linearize file. 206 * FSDK_IS_LINEARIZED is a linearize file.
207 *» » » FSDK_NOT_LINEARIZED is not a linearize file. 207 * FSDK_NOT_LINEARIZED is not a linearize file.
208 *» » » FSDK_UNKNOW_LINEARIZED don't know whether the file is a linearize file. 208 * FSDK_UNKNOW_LINEARIZED don't know whether the file is a linearize fi le.
209 * Comments: 209 * Comments:
210 *» » » It return TRUE/FALSE as soon as we have first 1K data. » If the file's size less than 210 * It return TRUE/FALSE as soon as we have first 1K data. If the file' s size less than
211 *» » » 1K,we don't known whether the PDF is a linearized file. 211 * 1K,we don't known whether the PDF is a linearized file.
212 * 212 *
213 */ 213 */
214 DLLEXPORT FPDF_BOOL STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail); 214 DLLEXPORT FPDF_BOOL STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail);
215 215
216 #ifdef __cplusplus 216 #ifdef __cplusplus
217 }; 217 }
218 #endif 218 #endif
219 219
220 #endif 220 #endif // PUBLIC_FPDF_DATAAVAIL_H_
221
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