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git.wh0rd.org - fontconfig.git/blob - src/fcmatch.c
2 * $XFree86: xc/lib/fontconfig/src/fcmatch.c,v 1.2 2002/02/15 06:01:28 keithp Exp $
4 * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
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.
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.
31 FcCompareInteger (char *object
, FcValue value1
, FcValue value2
)
35 if (value2
.type
!= FcTypeInteger
|| value1
.type
!= FcTypeInteger
)
37 v
= value2
.u
.i
- value1
.u
.i
;
44 FcCompareString (char *object
, FcValue value1
, FcValue value2
)
46 if (value2
.type
!= FcTypeString
|| value1
.type
!= FcTypeString
)
48 return (double) FcStrCmpIgnoreCase (value1
.u
.s
, value2
.u
.s
) != 0;
52 FcCompareBool (char *object
, FcValue value1
, FcValue value2
)
54 if (value2
.type
!= FcTypeBool
|| value1
.type
!= FcTypeBool
)
56 return (double) value2
.u
.b
!= value1
.u
.b
;
60 FcCompareCharSet (char *object
, FcValue value1
, FcValue value2
)
62 if (value2
.type
!= FcTypeCharSet
|| value1
.type
!= FcTypeCharSet
)
64 return (double) FcCharSetSubtractCount (value1
.u
.c
, value2
.u
.c
);
68 FcCompareSize (char *object
, FcValue value1
, FcValue value2
)
72 switch (value1
.type
) {
82 switch (value2
.type
) {
101 * Order is significant, it defines the precedence of
102 * each value, earlier values are more significant than
105 static FcMatcher _FcMatchers
[] = {
106 { FC_FOUNDRY
, FcCompareString
, },
107 { FC_CHARSET
, FcCompareCharSet
},
108 { FC_ANTIALIAS
, FcCompareBool
, },
109 { FC_LANG
, FcCompareString
},
110 { FC_FAMILY
, FcCompareString
, },
111 { FC_SPACING
, FcCompareInteger
, },
112 { FC_PIXEL_SIZE
, FcCompareSize
, },
113 { FC_STYLE
, FcCompareString
, },
114 { FC_SLANT
, FcCompareInteger
, },
115 { FC_WEIGHT
, FcCompareInteger
, },
116 { FC_RASTERIZER
, FcCompareString
, },
117 { FC_OUTLINE
, FcCompareBool
, },
120 #define NUM_MATCHER (sizeof _FcMatchers / sizeof _FcMatchers[0])
123 FcCompareValueList (const char *object
,
124 FcValueList
*v1orig
, /* pattern */
125 FcValueList
*v2orig
, /* target */
130 FcValueList
*v1
, *v2
;
135 for (i
= 0; i
< NUM_MATCHER
; i
++)
137 if (!FcStrCmpIgnoreCase ((FcChar8
*) _FcMatchers
[i
].object
,
141 if (i
== NUM_MATCHER
)
144 *bestValue
= v2orig
->value
;
150 for (v1
= v1orig
; v1
; v1
= v1
->next
)
152 for (v2
= v2orig
; v2
; v2
= v2
->next
)
154 v
= (*_FcMatchers
[i
].compare
) (_FcMatchers
[i
].object
,
159 *result
= FcResultTypeMismatch
;
162 if (FcDebug () & FC_DBG_MATCHV
)
163 printf (" v %g j %d ", v
, j
);
168 *bestValue
= v2
->value
;
174 if (FcDebug () & FC_DBG_MATCHV
)
176 printf (" %s: %g ", object
, best
);
177 FcValueListPrint (v1orig
);
179 FcValueListPrint (v2orig
);
187 * Return a value indicating the distance between the two lists of
192 FcCompare (FcPattern
*pat
,
199 for (i
= 0; i
< NUM_MATCHER
; i
++)
202 for (i1
= 0; i1
< pat
->num
; i1
++)
204 for (i2
= 0; i2
< fnt
->num
; i2
++)
206 if (!FcStrCmpIgnoreCase ((FcChar8
*) pat
->elts
[i1
].object
,
207 (FcChar8
*) fnt
->elts
[i2
].object
))
209 if (!FcCompareValueList (pat
->elts
[i1
].object
,
210 pat
->elts
[i1
].values
,
211 fnt
->elts
[i2
].values
,
221 * Overspecified patterns are slightly penalized in
222 * case some other font includes the requested field
226 for (i2
= 0; i2
< NUM_MATCHER
; i2
++)
228 if (!FcStrCmpIgnoreCase (_FcMatchers
[i2
].object
,
229 pat
->elts
[i1
].object
))
242 FcFontRenderPrepare (FcConfig
*config
,
248 FcPatternElt
*fe
, *pe
;
250 double score
[NUM_MATCHER
];
253 new = FcPatternCreate ();
256 for (i
= 0; i
< font
->num
; i
++)
259 pe
= FcPatternFind (pat
, fe
->object
, FcFalse
);
262 if (!FcCompareValueList (pe
->object
, pe
->values
,
263 fe
->values
, &v
, score
, &result
))
265 FcPatternDestroy (new);
270 v
= fe
->values
->value
;
271 FcPatternAdd (new, fe
->object
, v
, FcTrue
);
273 for (i
= 0; i
< pat
->num
; i
++)
276 fe
= FcPatternFind (font
, pe
->object
, FcFalse
);
278 FcPatternAdd (new, pe
->object
, pe
->values
->value
, FcTrue
);
280 FcConfigSubstitute (config
, new, FcMatchFont
);
285 FcFontSetMatch (FcConfig
*config
,
291 double score
[NUM_MATCHER
], bestscore
[NUM_MATCHER
];
298 for (i
= 0; i
< NUM_MATCHER
; i
++)
301 if (FcDebug () & FC_DBG_MATCH
)
308 config
= FcConfigGetCurrent ();
312 for (set
= 0; set
< nsets
; set
++)
317 for (f
= 0; f
< s
->nfont
; f
++)
319 if (FcDebug () & FC_DBG_MATCHV
)
321 printf ("Font %d ", f
);
322 FcPatternPrint (s
->fonts
[f
]);
324 if (!FcCompare (p
, s
->fonts
[f
], score
, result
))
326 if (FcDebug () & FC_DBG_MATCHV
)
329 for (i
= 0; i
< NUM_MATCHER
; i
++)
331 printf (" %g", score
[i
]);
335 for (i
= 0; i
< NUM_MATCHER
; i
++)
337 if (best
&& bestscore
[i
] < score
[i
])
339 if (!best
|| score
[i
] < bestscore
[i
])
341 for (i
= 0; i
< NUM_MATCHER
; i
++)
342 bestscore
[i
] = score
[i
];
349 if (FcDebug () & FC_DBG_MATCH
)
351 printf ("Best score");
352 for (i
= 0; i
< NUM_MATCHER
; i
++)
353 printf (" %g", bestscore
[i
]);
354 FcPatternPrint (best
);
358 *result
= FcResultNoMatch
;
361 return FcFontRenderPrepare (config
, p
, best
);
365 FcFontMatch (FcConfig
*config
,
374 config
= FcConfigGetCurrent ();
379 if (config
->fonts
[FcSetSystem
])
380 sets
[nsets
++] = config
->fonts
[FcSetSystem
];
381 if (config
->fonts
[FcSetApplication
])
382 sets
[nsets
++] = config
->fonts
[FcSetApplication
];
383 return FcFontSetMatch (config
, sets
, nsets
, p
, result
);
386 typedef struct _FcSortNode
{
388 double score
[NUM_MATCHER
];
392 FcSortCompare (const void *aa
, const void *ab
)
394 FcSortNode
*a
= *(FcSortNode
**) aa
;
395 FcSortNode
*b
= *(FcSortNode
**) ab
;
398 for (i
= 0; i
< NUM_MATCHER
; i
++)
400 if (a
->score
[i
] > b
->score
[i
])
402 if (a
->score
[i
] < b
->score
[i
])
409 FcSortWalk (FcSortNode
**n
, int nnode
, FcFontSet
*fs
, FcCharSet
**cs
, FcBool trim
)
417 if (FcPatternGetCharSet (node
->pattern
, FC_CHARSET
, 0, &ncs
) ==
420 if (!trim
|| !*cs
|| FcCharSetSubtractCount (ncs
, *cs
) != 0)
424 ncs
= FcCharSetUnion (ncs
, *cs
);
427 FcCharSetDestroy (*cs
);
430 ncs
= FcCharSetCopy (ncs
);
432 if (!FcFontSetAdd (fs
, node
->pattern
))
441 FcFontSetSort (FcConfig
*config
,
452 FcSortNode
**nodeps
, **nodep
;
461 for (set
= 0; set
< nsets
; set
++)
470 nodes
= malloc (nnodes
* sizeof (FcSortNode
) + nnodes
* sizeof (FcSortNode
*));
473 nodeps
= (FcSortNode
**) nodes
+ nnodes
;
477 for (set
= 0; set
< nsets
; set
++)
482 for (f
= 0; f
< s
->nfont
; f
++)
484 if (FcDebug () & FC_DBG_MATCHV
)
486 printf ("Font %d ", f
);
487 FcPatternPrint (s
->fonts
[f
]);
489 new->pattern
= s
->fonts
[f
];
490 if (!FcCompare (p
, new->pattern
, new->score
, result
))
492 if (FcDebug () & FC_DBG_MATCHV
)
495 for (i
= 0; i
< NUM_MATCHER
; i
++)
497 printf (" %g", new->score
[i
]);
507 nnodes
= new - nodes
;
509 qsort (nodeps
, sizeof (FcSortNode
*), nnodes
,
512 ret
= FcFontSetCreate ();
518 if (!FcSortWalk (nodeps
, nnodes
, ret
, &cs
, trim
))
527 FcCharSetDestroy (cs
);
528 FcFontSetDestroy (ret
);