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Issue 1413673003: Update bundled freetype to 2.6.1 (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: DEPS for corpus Created 5 years, 1 month ago
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1 /***************************************************************************/
2 /* */
3 /* ftlist.h */
4 /* */
5 /* Generic list support for FreeType (specification). */
6 /* */
7 /* Copyright 1996-2001, 2003, 2007, 2010, 2013, 2014 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17
18
19 /*************************************************************************/
20 /* */
21 /* This file implements functions relative to list processing. Its */
22 /* data structures are defined in `freetype.h'. */
23 /* */
24 /*************************************************************************/
25
26
27 #ifndef __FTLIST_H__
28 #define __FTLIST_H__
29
30
31 #include <ft2build.h>
32 #include FT_FREETYPE_H
33
34 #ifdef FREETYPE_H
35 #error "freetype.h of FreeType 1 has been loaded!"
36 #error "Please fix the directory search order for header files"
37 #error "so that freetype.h of FreeType 2 is found first."
38 #endif
39
40
41 FT_BEGIN_HEADER
42
43
44 /*************************************************************************/
45 /* */
46 /* <Section> */
47 /* list_processing */
48 /* */
49 /* <Title> */
50 /* List Processing */
51 /* */
52 /* <Abstract> */
53 /* Simple management of lists. */
54 /* */
55 /* <Description> */
56 /* This section contains various definitions related to list */
57 /* processing using doubly-linked nodes. */
58 /* */
59 /* <Order> */
60 /* FT_List */
61 /* FT_ListNode */
62 /* FT_ListRec */
63 /* FT_ListNodeRec */
64 /* */
65 /* FT_List_Add */
66 /* FT_List_Insert */
67 /* FT_List_Find */
68 /* FT_List_Remove */
69 /* FT_List_Up */
70 /* FT_List_Iterate */
71 /* FT_List_Iterator */
72 /* FT_List_Finalize */
73 /* FT_List_Destructor */
74 /* */
75 /*************************************************************************/
76
77
78 /*************************************************************************/
79 /* */
80 /* <Function> */
81 /* FT_List_Find */
82 /* */
83 /* <Description> */
84 /* Find the list node for a given listed object. */
85 /* */
86 /* <Input> */
87 /* list :: A pointer to the parent list. */
88 /* data :: The address of the listed object. */
89 /* */
90 /* <Return> */
91 /* List node. NULL if it wasn't found. */
92 /* */
93 FT_EXPORT( FT_ListNode )
94 FT_List_Find( FT_List list,
95 void* data );
96
97
98 /*************************************************************************/
99 /* */
100 /* <Function> */
101 /* FT_List_Add */
102 /* */
103 /* <Description> */
104 /* Append an element to the end of a list. */
105 /* */
106 /* <InOut> */
107 /* list :: A pointer to the parent list. */
108 /* node :: The node to append. */
109 /* */
110 FT_EXPORT( void )
111 FT_List_Add( FT_List list,
112 FT_ListNode node );
113
114
115 /*************************************************************************/
116 /* */
117 /* <Function> */
118 /* FT_List_Insert */
119 /* */
120 /* <Description> */
121 /* Insert an element at the head of a list. */
122 /* */
123 /* <InOut> */
124 /* list :: A pointer to parent list. */
125 /* node :: The node to insert. */
126 /* */
127 FT_EXPORT( void )
128 FT_List_Insert( FT_List list,
129 FT_ListNode node );
130
131
132 /*************************************************************************/
133 /* */
134 /* <Function> */
135 /* FT_List_Remove */
136 /* */
137 /* <Description> */
138 /* Remove a node from a list. This function doesn't check whether */
139 /* the node is in the list! */
140 /* */
141 /* <Input> */
142 /* node :: The node to remove. */
143 /* */
144 /* <InOut> */
145 /* list :: A pointer to the parent list. */
146 /* */
147 FT_EXPORT( void )
148 FT_List_Remove( FT_List list,
149 FT_ListNode node );
150
151
152 /*************************************************************************/
153 /* */
154 /* <Function> */
155 /* FT_List_Up */
156 /* */
157 /* <Description> */
158 /* Move a node to the head/top of a list. Used to maintain LRU */
159 /* lists. */
160 /* */
161 /* <InOut> */
162 /* list :: A pointer to the parent list. */
163 /* node :: The node to move. */
164 /* */
165 FT_EXPORT( void )
166 FT_List_Up( FT_List list,
167 FT_ListNode node );
168
169
170 /*************************************************************************/
171 /* */
172 /* <FuncType> */
173 /* FT_List_Iterator */
174 /* */
175 /* <Description> */
176 /* An FT_List iterator function that is called during a list parse */
177 /* by @FT_List_Iterate. */
178 /* */
179 /* <Input> */
180 /* node :: The current iteration list node. */
181 /* */
182 /* user :: A typeless pointer passed to @FT_List_Iterate. */
183 /* Can be used to point to the iteration's state. */
184 /* */
185 typedef FT_Error
186 (*FT_List_Iterator)( FT_ListNode node,
187 void* user );
188
189
190 /*************************************************************************/
191 /* */
192 /* <Function> */
193 /* FT_List_Iterate */
194 /* */
195 /* <Description> */
196 /* Parse a list and calls a given iterator function on each element. */
197 /* Note that parsing is stopped as soon as one of the iterator calls */
198 /* returns a non-zero value. */
199 /* */
200 /* <Input> */
201 /* list :: A handle to the list. */
202 /* iterator :: An iterator function, called on each node of the list. */
203 /* user :: A user-supplied field that is passed as the second */
204 /* argument to the iterator. */
205 /* */
206 /* <Return> */
207 /* The result (a FreeType error code) of the last iterator call. */
208 /* */
209 FT_EXPORT( FT_Error )
210 FT_List_Iterate( FT_List list,
211 FT_List_Iterator iterator,
212 void* user );
213
214
215 /*************************************************************************/
216 /* */
217 /* <FuncType> */
218 /* FT_List_Destructor */
219 /* */
220 /* <Description> */
221 /* An @FT_List iterator function that is called during a list */
222 /* finalization by @FT_List_Finalize to destroy all elements in a */
223 /* given list. */
224 /* */
225 /* <Input> */
226 /* system :: The current system object. */
227 /* */
228 /* data :: The current object to destroy. */
229 /* */
230 /* user :: A typeless pointer passed to @FT_List_Iterate. It can */
231 /* be used to point to the iteration's state. */
232 /* */
233 typedef void
234 (*FT_List_Destructor)( FT_Memory memory,
235 void* data,
236 void* user );
237
238
239 /*************************************************************************/
240 /* */
241 /* <Function> */
242 /* FT_List_Finalize */
243 /* */
244 /* <Description> */
245 /* Destroy all elements in the list as well as the list itself. */
246 /* */
247 /* <Input> */
248 /* list :: A handle to the list. */
249 /* */
250 /* destroy :: A list destructor that will be applied to each element */
251 /* of the list. Set this to NULL if not needed. */
252 /* */
253 /* memory :: The current memory object that handles deallocation. */
254 /* */
255 /* user :: A user-supplied field that is passed as the last */
256 /* argument to the destructor. */
257 /* */
258 /* <Note> */
259 /* This function expects that all nodes added by @FT_List_Add or */
260 /* @FT_List_Insert have been dynamically allocated. */
261 /* */
262 FT_EXPORT( void )
263 FT_List_Finalize( FT_List list,
264 FT_List_Destructor destroy,
265 FT_Memory memory,
266 void* user );
267
268 /* */
269
270
271 FT_END_HEADER
272
273 #endif /* __FTLIST_H__ */
274
275
276 /* END */
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