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      1 /*
      2  * Copyright  2015 Keith Packard
      3  *
      4  * Permission to use, copy, modify, distribute, and sell this software and its
      5  * documentation for any purpose is hereby granted without fee, provided that
      6  * the above copyright notice appear in all copies and that both that copyright
      7  * notice and this permission notice appear in supporting documentation, and
      8  * that the name of the copyright holders not be used in advertising or
      9  * publicity pertaining to distribution of the software without specific,
     10  * written prior permission.  The copyright holders make no representations
     11  * about the suitability of this software for any purpose.  It is provided "as
     12  * is" without express or implied warranty.
     13  *
     14  * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
     15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
     16  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
     17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
     18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
     19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
     20  * OF THIS SOFTWARE.
     21  */
     22 
     23 #ifndef _LIBXFONT2_H_
     24 #define _LIBXFONT2_H_
     25 
     26 #include	<stddef.h>
     27 #include	<stdarg.h>
     28 #include	<stdint.h>
     29 #include	<X11/Xfuncproto.h>
     30 #include	<X11/fonts/font.h>
     31 #include	<X11/fonts/fontproto.h>
     32 
     33 #define XFONT2_FPE_FUNCS_VERSION	1
     34 
     35 typedef int (*WakeupFpe) (FontPathElementPtr fpe);
     36 
     37 typedef struct _xfont2_fpe_funcs {
     38 	int		version;
     39 	NameCheckFunc	name_check;
     40 	InitFpeFunc	init_fpe;
     41 	FreeFpeFunc	free_fpe;
     42 	ResetFpeFunc	reset_fpe;
     43 	OpenFontFunc	open_font;
     44 	CloseFontFunc	close_font;
     45 	ListFontsFunc	list_fonts;
     46 	StartLfwiFunc	start_list_fonts_with_info;
     47 	NextLfwiFunc	list_next_font_with_info;
     48 	WakeupFpe	wakeup_fpe;
     49 	ClientDiedFunc	client_died;
     50 	LoadGlyphsFunc	load_glyphs;
     51 	StartLaFunc	start_list_fonts_and_aliases;
     52 	NextLaFunc	list_next_font_or_alias;
     53 	SetPathFunc	set_path_hook;
     54 } xfont2_fpe_funcs_rec, *xfont2_fpe_funcs_ptr;
     55 
     56 typedef void (*FontBlockHandlerProcPtr) (void *timeout);
     57 
     58 typedef void (*FontFdHandlerProcPtr) (int fd, void *data);
     59 
     60 #define XFONT2_CLIENT_FUNCS_VERSION	1
     61 
     62 typedef struct _xfont2_client_funcs {
     63 	int			version;
     64 	int			(*client_auth_generation)(ClientPtr client);
     65 	Bool			(*client_signal)(ClientPtr client);
     66 	void			(*delete_font_client_id)(Font id);
     67 	void			(*verrorf)(const char *f, va_list ap) _X_ATTRIBUTE_PRINTF(1,0);
     68 	FontPtr			(*find_old_font)(FSID id);
     69 	FontResolutionPtr	(*get_client_resolutions)(int *num);
     70 	int			(*get_default_point_size)(void);
     71 	Font			(*get_new_font_client_id)(void);
     72 	uint32_t		(*get_time_in_millis)(void);
     73 	int			(*init_fs_handlers)(FontPathElementPtr fpe,
     74 						    FontBlockHandlerProcPtr block_handler);
     75 	int			(*register_fpe_funcs)(const xfont2_fpe_funcs_rec *funcs);
     76 	void			(*remove_fs_handlers)(FontPathElementPtr fpe,
     77 						      FontBlockHandlerProcPtr block_handler,
     78 						      Bool all );
     79 	void			*(*get_server_client)(void);
     80 	int			(*set_font_authorizations)(char **authorizations,
     81 							   int *authlen, void *client);
     82 	int			(*store_font_client_font)(FontPtr pfont, Font id);
     83 	Atom			(*make_atom)(const char *string, unsigned len, int makeit);
     84 	int			(*valid_atom)(Atom atom);
     85 	const char		*(*name_for_atom)(Atom atom);
     86 	unsigned long		(*get_server_generation)(void);
     87 	int			(*add_fs_fd)(int fd, FontFdHandlerProcPtr handler, void *data);
     88 	void			(*remove_fs_fd)(int fd);
     89 	void			(*adjust_fs_wait_for_delay)(void *wt, unsigned long newdelay);
     90 } xfont2_client_funcs_rec, *xfont2_client_funcs_ptr;
     91 
     92 _X_EXPORT int
     93 xfont2_init(xfont2_client_funcs_rec const *client_funcs);
     94 
     95 _X_EXPORT void
     96 xfont2_query_glyph_extents(FontPtr pFont, CharInfoPtr *charinfo,
     97 			   unsigned long count, ExtentInfoRec *info);
     98 
     99 _X_EXPORT Bool
    100 xfont2_query_text_extents(FontPtr pFont, unsigned long count,
    101 			  unsigned char *chars, ExtentInfoRec *info);
    102 
    103 _X_EXPORT Bool
    104 xfont2_parse_glyph_caching_mode(char *str);
    105 
    106 _X_EXPORT void
    107 xfont2_init_glyph_caching(void);
    108 
    109 _X_EXPORT void
    110 xfont2_set_glyph_caching_mode(int newmode);
    111 
    112 _X_EXPORT FontNamesPtr
    113 xfont2_make_font_names_record(unsigned size);
    114 
    115 _X_EXPORT void
    116 xfont2_free_font_names(FontNamesPtr pFN);
    117 
    118 _X_EXPORT int
    119 xfont2_add_font_names_name(FontNamesPtr names,
    120 			   char *name,
    121 			   int length);
    122 
    123 typedef struct _xfont2_pattern_cache    *xfont2_pattern_cache_ptr;
    124 
    125 _X_EXPORT xfont2_pattern_cache_ptr
    126 xfont2_make_font_pattern_cache(void);
    127 
    128 _X_EXPORT void
    129 xfont2_free_font_pattern_cache(xfont2_pattern_cache_ptr cache);
    130 
    131 _X_EXPORT void
    132 xfont2_empty_font_pattern_cache(xfont2_pattern_cache_ptr cache);
    133 
    134 _X_EXPORT void
    135 xfont2_cache_font_pattern(xfont2_pattern_cache_ptr cache,
    136 			  const char * pattern,
    137 			  int patlen,
    138 			  FontPtr pFont);
    139 
    140 _X_EXPORT FontPtr
    141 xfont2_find_cached_font_pattern(xfont2_pattern_cache_ptr cache,
    142 				const char * pattern,
    143 				int patlen);
    144 
    145 _X_EXPORT void
    146 xfont2_remove_cached_font_pattern(xfont2_pattern_cache_ptr cache,
    147 				  FontPtr pFont);
    148 
    149 /* private.c */
    150 
    151 _X_EXPORT int
    152 xfont2_allocate_font_private_index (void);
    153 
    154 static inline void *
    155 xfont2_font_get_private(FontPtr pFont, int n)
    156 {
    157 	if (n > pFont->maxPrivate)
    158 		return NULL;
    159 	return pFont->devPrivates[n];
    160 }
    161 
    162 _X_EXPORT Bool
    163 xfont2_font_set_private(FontPtr pFont, int n, void *ptr);
    164 
    165 #endif /* _LIBXFONT2_H_ */
    166