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Document previously undocumented functions. (bug 12963)
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1/*
2 * $Id$
3 *
4 * Copyright © 2003 Keith Packard
5 *
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that
9 * copyright notice and this permission notice appear in supporting
10 * documentation, and that the name of Keith Packard not be used in
11 * advertising or publicity pertaining to distribution of the software without
12 * specific, written prior permission. Keith Packard makes no
13 * representations about the suitability of this software for any purpose. It
14 * is provided "as is" without express or implied warranty.
15 *
16 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
22 * PERFORMANCE OF THIS SOFTWARE.
23 */
24@RET@ FcConfig *
25@FUNC@ FcConfigCreate
26@TYPE1@ void
27@PURPOSE@ Create a configuration
28@DESC@
29Creates an empty configuration.
30@@
31
32@RET@ void
33@FUNC@ FcConfigDestroy
34@TYPE1@ FcConfig * @ARG1@ config
35@PURPOSE@ Destroy a configuration
36@DESC@
37Destroys a configuration and any data associated with it. Note that calling
38this function with the return from FcConfigGetCurrent will place the library
39in an indeterminate state.
40@@
41
42@RET@ FcBool
43@FUNC@ FcConfigSetCurrent
44@TYPE1@ FcConfig * @ARG1@ config
45@PURPOSE@ Set configuration as default
46@DESC@
47Sets the current default configuration to <parameter>config</parameter>. Implicitly calls
48FcConfigBuildFonts if necessary, returning FcFalse if that call fails.
49@@
50
51@RET@ FcConfig *
52@FUNC@ FcConfigGetCurrent
53@TYPE1@ void
54@PURPOSE@ Return current configuration
55@DESC@
56Returns the current default configuration.
57@@
58
59@RET@ FcBool
60@FUNC@ FcConfigUptoDate
61@TYPE1@ FcConfig * @ARG1@ config
62@PURPOSE@ Check timestamps on config files
63@DESC@
64Checks all of the files related to <parameter>config</parameter> and returns
65whether any of them has been modified since the configuration was created.
66@@
67
68@RET@ FcBool
69@FUNC@ FcConfigHome
70@TYPE1@ void
71@PURPOSE@ return the current home directory.
72@DESC@
73Return the current user's home directory, if it is available, and if using it
74is enabled. See also <function>FcConfigEnableHome</function>).
75@@
76
77@RET@ FcBol
78@FUNC@ FcConfigEnableHome
79@TYPE1@ FcBool% @ARG1@ enable
80@PURPOSE@ controls use of the home directory.
81@DESC@
82If <parameter>enable</parameter> is FcTrue, then Fontconfig will use various
83files which are specified relative to the user's home directory (using the ~
84notation in the configuration). When <parameter>enable</parameter> is
85FcFalse, then all use of the home directory in these contexts will be
86disabled. The previous setting of the value is returned.
87@@
88
89@RET@ FcBool
90@FUNC@ FcConfigBuildFonts
91@TYPE1@ FcConfig * @ARG1@ config
92@PURPOSE@ Build font database
93@DESC@
94Builds the set of available fonts for the given configuration. Note that
95any changes to the configuration after this call have indeterminate effects.
96Returns FcFalse if this operation runs out of memory.
97@@
98
99@RET@ FcStrList *
100@FUNC@ FcConfigGetConfigDirs
101@TYPE1@ FcConfig * @ARG1@ config
102@PURPOSE@ Get config directories
103@DESC@
104Returns the list of font directories specified in the configuration files
105for <parameter>config</parameter>. Does not include any subdirectories.
106@@
107
108@RET@ FcStrList *
109@FUNC@ FcConfigGetFontDirs
110@TYPE1@ FcConfig * @ARG1@ config
111@PURPOSE@ Get font directories
112@DESC@
113Returns the list of font directories in <parameter>config</parameter>. This includes the
114configured font directories along with any directories below those in the
115filesystem.
116@@
117
118@RET@ FcStrList *
119@FUNC@ FcConfigGetConfigFiles
120@TYPE1@ FcConfig * @ARG1@ config
121@PURPOSE@ Get config files
122@DESC@
123Returns the list of known configuration files used to generate <parameter>config</parameter>.
124Note that this will not include any configuration done with FcConfigParse.
125@@
126
127@RET@ char *
128@FUNC@ FcConfigGetCache
129@TYPE1@ FcConfig * @ARG1@ config
130@PURPOSE@ Get cache filename
131@DESC@
132Returns the name of the file used to store per-user font information.
133@@
134
135@RET@ FcStrList *
136@FUNC@ FcConfigGetCacheDirs
137@TYPE1@ FcConfig * @ARG1@ config
138@PURPOSE@ return the list of directories searched for cache files
139@DESC@
140<function>FcConfigGetCacheDirs</function> returns a string list containing
141all of the directories that fontconfig will search when attempting to load a
142cache file for a font directory.
143@@
144
145@RET@ FcFontSet *
146@FUNC@ FcConfigGetFonts
147@TYPE1@ FcConfig * @ARG1@ config
148@TYPE2@ FcSetName% @ARG2@ set
149@PURPOSE@ Get config font set
150@DESC@
151Returns one of the two sets of fonts from the configuration as specified
152by <parameter>set</parameter>.
153@@
154
155@RET@ FcBlanks *
156@FUNC@ FcConfigGetBlanks
157@TYPE1@ FcConfig * @ARG1@ config
158@PURPOSE@ Get config blanks
159@DESC@
160Returns the FcBlanks object associated with the given configuration, if no
161blanks were present in the configuration, this function will return 0.
162@@
163
164@RET@ int
165@FUNC@ FcConfigGetRescanInterval
166@TYPE1@ FcConfig * @ARG1@ config
167@PURPOSE@ Get config rescan interval
168@DESC@
169Returns the interval between automatic checks of the configuration (in
170seconds) specified in <parameter>config</parameter>. The configuration is checked during
171a call to FcFontList when this interval has passed since the last check.
172@@
173
174@RET@ FcBool
175@FUNC@ FcConfigSetRescanInterval
176@TYPE1@ FcConfig * @ARG1@ config
177@TYPE2@ int% @ARG2@ rescanInterval
178@PURPOSE@ Set config rescan interval
179@DESC@
180Sets the rescan interval; returns FcFalse if an error occurred.
181@@
182
183@RET@ FcBool
184@FUNC@ FcConfigAppFontAddFile
185@TYPE1@ FcConfig * @ARG1@ config
186@TYPE2@ const char * @ARG2@ file
187@PURPOSE@ Add font file to font database
188@DESC@
189Adds an application-specific font to the configuration.
190@@
191
192@RET@ FcBool
193@FUNC@ FcConfigAppFontAddDir
194@TYPE1@ FcConfig * @ARG1@ config
195@TYPE2@ const char * @ARG1@ dir
196@PURPOSE@ Add fonts from directory to font database
197@DESC@
198Scans the specified directory for fonts, adding each one found to the
199application-specific set of fonts.
200@@
201
202@RET@ void
203@FUNC@ FcConfigAppFontClear
204@TYPE1@ FcConfig * @ARG1@ config
205@PURPOSE@ Remove all app fonts from font database
206@DESC@
207Clears the set of application-specific fonts.
208@@
209
210@RET@ FcBool
211@FUNC@ FcConfigSubstituteWithPat
212@TYPE1@ FcConfig * @ARG1@ config
213@TYPE2@ FcPattern * @ARG2@ p
214@TYPE3@ FcPattern * @ARG3@ p_pat
215@TYPE4@ FcMatchKind% @ARG4@ kind
216@PURPOSE@ Execute substitutions
217@DESC@
218Performs the sequence of pattern modification operations, if <parameter>kind</parameter> is
219FcMatchPattern, then those tagged as pattern operations are applied, else
220if <parameter>kind</parameter> is FcMatchFont, those tagged as font operations are applied and
221p_pat is used for &lt;test&gt; elements with target=pattern.
222@@
223
224@RET@ FcBool
225@FUNC@ FcConfigSubstitute
226@TYPE1@ FcConfig * @ARG1@ config
227@TYPE2@ FcPattern * @ARG2@ p
228@TYPE3@ FcMatchKind% @ARG3@ kind
229@PURPOSE@ Execute substitutions
230@DESC@
231Calls FcConfigSubstituteWithPat setting p_pat to NULL.
232@@
233
234@RET@ FcPattern *
235@FUNC@ FcFontMatch
236@TYPE1@ FcConfig * @ARG1@ config
237@TYPE2@ FcPattern * @ARG2@ p
238@TYPE3@ FcResult * @ARG3@ result
239@PURPOSE@ Return best font
240@DESC@
241Returns the font in <parameter>config</parameter> most close matching <parameter>p</parameter>. This function
242should be called only after FcConfigSubstitute and FcDefaultSubstitute have
243been called for <parameter>p</parameter>; otherwise the results will not be correct.
244@@
245
246@RET@ FcFontSet *
247@FUNC@ FcFontSort
248@TYPE1@ FcConfig * @ARG1@ config
249@TYPE2@ FcPattern * @ARG2@ p
250@TYPE3@ FcBool% @ARG3@ trim
251@TYPE4@ FcCharSet ** @ARG4@ csp
252@TYPE5@ FcResult * @ARG5@ result
253@PURPOSE@ Return list of matching fonts
254@DESC@
255Returns the list of fonts sorted by closeness to <parameter>p</parameter>. If <parameter>trim</parameter> is FcTrue,
256elements in the list which don't include Unicode coverage not provided by
257earlier elements in the list are elided. The union of Unicode coverage of
258all of the fonts is returned in <parameter>csp</parameter>, if <parameter>csp</parameter> is not NULL. This function
259should be called only after FcConfigSubstitute and FcDefaultSubstitute have
260been called for <parameter>p</parameter>; otherwise the results will not be correct.
261 </para><para>
262The returned FcFontSet references FcPattern structures which may be shared
263by the return value from multiple FcFontSort calls, applications must not
264modify these patterns. Instead, they should be passed, along with <parameter>p</parameter> to
265FcFontRenderPrepare which combines them into a complete pattern.
266 </para><para>
267The FcFontSet returned by FcFontSort is destroyed by caling FcFontSetDestroy.
268@@
269
270@RET@ FcPattern *
271@FUNC@ FcFontRenderPrepare
272@TYPE1@ FcConfig * @ARG1@ config
273@TYPE2@ FcPattern * @ARG2@ pat
274@TYPE3@ FcPattern * @ARG3@ font
275@PURPOSE@ Prepare pattern for loading font file
276@DESC@
277Creates a new pattern consisting of elements of <parameter>font</parameter> not appearing
278in <parameter>pat</parameter>, elements of <parameter>pat</parameter> not appearing in <parameter>font</parameter> and the best matching
279value from <parameter>pat</parameter> for elements appearing in both. The result is passed to
280FcConfigSubstitute with <parameter>kind</parameter> FcMatchFont and then returned.
281@@
282
283@RET@ FcFontSet *
284@FUNC@ FcFontList
285@TYPE1@ FcConfig * @ARG1@ config
286@TYPE2@ FcPattern * @ARG2@ p
287@TYPE3@ FcObjectSet * @ARG3@ os
288@PURPOSE@ List fonts
289@DESC@
290Selects fonts matching <parameter>p</parameter>, creates patterns from those fonts containing
291only the objects in <parameter>os</parameter> and returns the set of unique such patterns.
292@@
293
294@RET@ char *
295@FUNC@ FcConfigFilename
296@TYPE1@ const char * @ARG1@ name
297@PURPOSE@ Find a config file
298@DESC@
299Given the specified external entity name, return the associated filename.
300This provides applications a way to convert various configuration file
301references into filename form.
302 </para><para>
303A null or empty <parameter>name</parameter> indicates that the default configuration file should
304be used; which file this references can be overridden with the
305FC_CONFIG_FILE environment variable. Next, if the name starts with <parameter>~</parameter>, it
306refers to a file in the current users home directory. Otherwise if the name
307doesn't start with '/', it refers to a file in the default configuration
308directory; the built-in default directory can be overridden with the
309FC_CONFIG_DIR environment variable.
310@@
311
312@RET@ FcBool
313@FUNC@ FcConfigParseAndLoad
314@TYPE1@ FcConfig * @ARG1@ config
315@TYPE2@ const FcChar8 * @ARG2@ file
316@TYPE3@ FcBool% @ARG3@ complain
317@PURPOSE@ load a configuration file
318@DESC@
319Walks the configuration in 'file' and constructs the internal representation
320in 'config'. Any include files referenced from within 'file' will be loaded
321with FcConfigLoad and also parsed. If 'complain' is FcFalse, no warning
322will be displayed if 'file' does not exist.
323@@