After 7587d1c99d applied, family,
style, and fullname is localized against current locale or lang
if any though, the string in other languages were dropped from
the pattern. this caused unexpected mismatch on the target="font"
rules.
This fix adds other strings at the end of the list.
Add "namelang" object to obtain the localized name in the font regardless
of the lang object. it's applied to "familylang", "stylelang" and
"fullnamelang" alltogether. this would helps if one wants to enforce
selecting them in the specific language if any. the default value for
the namelang object is determined from current locale.
In the previous code, the result of 'result' in the argument for
FcFontSetSort() and FcFontSetMatch() wasn't predictable and not reliable to
check if the return value is valid or not. this change is to ensure if it's
performed successfully.
I broke FcFontSort() language handling at the end of 2008 with this
commit: c7641f28
G-d knows how many of the lang-matching bugs in bugzilla will be
fixed by this changed...
I'm really sorry, everyone!
To only work on writable charsets. Also, return a bool indicating whether
the merge changed the charset.
Also changes the implementation of FcCharSetMerge and FcCharSetIsSubset
Previously an index j was added to element score to prefer matches earlier
in the value list to the later ones. This index started from 0, meaning
that the score zero could be generated for the first element. By starting
j from one, scores for when the element exists in both pattern and font
can never be zero. The score zero is reserved for when the element is
NOT available in both font and pattern. We will use this property later.
This shouldn't change matching much. The only difference I can think of
is that if a font family exists both as a bitmap font and a scalable
version, and when requesting it at the size of the bitmap version,
previously the font returned was nondeterministic. Now the scalable
version will always be preferred.
Previously the matcher multiplied comparison results by 100 and added
index value to it. With long lists of families (lots of aliases),
reaching 100 is not that hard. That could result in a non-match early
in the list to be preferred over a match late in the list. Changing
the multiplier from 100 to 1000 should fix that.
To keep things relatively in order, the lang multiplier is changed
from 1000 to 10000.
Previously fc-match "xxx,nazli" matched Nazli, but "xxx, nazli" didn't.
This was because of a bug in FcCompareFamily's short-circuit check
that forgot to ignore spaces.
The current behaviour of FcSortWalk() is to create a new FcCharSet on
each iteration that is the union of the previous iteration with the next
FcCharSet in the font set. This causes the existing FcCharSet to be
reproduced in its entirety and then allocates fresh leaves for the new
FcCharSet. In essence the number of allocations is quadratic wrt the
number of fonts required.
By introducing a new method for merging a new FcCharSet with an existing
one we can change the behaviour to be effectively linear with the number
of fonts - allocating no more leaves than necessary to cover all the
fonts in the set.
For example, profiling 'gedit UTF-8-demo.txt'
Allocator nAllocs nBytes
Before:
FcCharSetFindLeafCreate 62886 2012352
FcCharSetPutLeaf 9361 11441108
After:
FcCharSetFindLeafCreate 1940 62080
FcCharSetPutLeaf 281 190336
The savings are even more significant for applications like firefox-3.0b5
which need to switch between large number of fonts.
Before:
FcCharSetFindLeafCreate 4461192 142758144
FcCharSetPutLeaf 1124536 451574172
After:
FcCharSetFindLeafCreate 80359 2571488
FcCharSetPutLeaf 18940 9720522
Out of interest, the next most frequent allocations are
FcPatternObjectAddWithBinding 526029 10520580
tt_face_load_eblc 42103 2529892
It seems indices in _FcMatchers array are slightly mixed up, MATCH_DECORATIVE
should be 10, not 11.
And MATCH_RASTERIZER_INDEX should be 13, not 12, right?
Using a simple shell script that processes the public headers, two header
files are constructed that map public symbols to hidden internal aliases
avoiding the assocated PLT entry for referring to a public symbol.
A few mistakes in the FcPrivate/FcPublic annotations were also discovered
through this process
The Delicious family includes one named Delicious Heavy, a bold variant
which is unfortunately marked as having normal weight. Because the family
name is 'Delicious', fontconfig accidentally selects this font instead of
the normal weight variant. The fix here rewrites the scanned data by running
the scanned pattern through a new substitution sequence tagged with
<match target=scan>; a sample for the Delicious family is included to
demonstrate how it works (and fix Delicious at the same time).
Also added was a new match predicate -- the 'decorative' predicate which is
automatically detected in fonts by searching style names for key decorative
phrases like SmallCaps, Shadow, Embosed and Antiqua. Suggestions for
additional decorative key words are welcome. This should have little effect
on font matching except when two fonts share the same characteristics except
for this value.
A pattern specifying 'Chinese' (:lang=zh) without a territory should be
satisfied by any font supporting any Chinese lang. The code was requiring
that the lang tags match exactly, causing this sort to fail.
Eliminate ancient list of object name databases and load names into single
hash table that includes type information. Typecheck all pattern values to
avoid mis-typed pattern elements.
Replace all of the bank/id pairs with simple offsets, recode several
data structures to always use offsets inside the library to avoid
conditional paths. Exposed data structures use pointers to hold offsets,
setting the low bit to distinguish between offset and pointer.
Use offset-based data structures for lang charset encodings; eliminates
separate data structure format for that file.
Much testing will be needed; offsets are likely not detected everywhere in
the library yet.
The fancy new FcFontSetMatch algorithm would discard fonts for the
wrong reasons; fc-match sans:lang=en,ja would discard all fonts without
Japanese support. This commit reverts to the original algorithm which
ensure that FcFontSetMatch always matches the first font in the
FcFontSetSort return list.
permitting cache files to be stored in font dirs. Bump cache magic.
Don't include /fonts.cache-2 in cache hash construction.
reviewed by: Patrick Lam <plam@mit.edu>
Rewrite FcFontSetMatch to a path-finding based algorithm, i.e. inline
FcCompare into FcFontSetMatch and reorder the loops, adding a boolean
array which blocks patterns from future consideration if they're known
to not be best on some past criterion.
Check for type validity during FcPatternAddWithBinding, don't verify type
in FcFontMatch, don't call FcCanonicalize here (which always does a
deep copy).
reviewed by: plam
Behdad Esfahbod
Akira TAGOH
Karl Tomlinson
Chris Wilson
Evgeniy Stepanov
Keith Packard
Keith Packard
Patrick Lam