fontconfig/doc/fcweight.fncs

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/*
* fontconfig/doc/fcweight.fncs
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the author(s) not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. The authors make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
@RET@ int
@FUNC@ FcWeightFromOpenType
@TYPE1@ int @ARG1@ ot_weight
@PURPOSE@ Convert from OpenType weight values to fontconfig ones
@DESC@
<function>FcWeightFromOpenType</function> returns an integer value
to use with FC_WEIGHT, from an integer in the 1..1000 range, resembling
the numbers from OpenType specification's OS/2 usWeight numbers, which
are also similar to CSS font-weight numbers. If input is negative,
zero, or greater than 1000, returns -1. This function linearly interpolates
between various FC_WEIGHT_* constants. As such, the returned value does not
necessarily match any of the predefined constants.
@SINCE@ 2.11.91
@@
@RET@ int
@FUNC@ FcWeightToOpenType
@TYPE1@ int @ARG1@ ot_weight
@PURPOSE@ Convert from fontconfig weight values to OpenType ones
@DESC@
<function>FcWeightToOpenType</function> is the inverse of
<function>FcWeightFromOpenType</function>. If the input is less than
FC_WEIGHT_THIN or greater than FC_WEIGHT_EXTRABLACK, returns -1. Otherwise
returns a number in the range 1 to 1000.
@SINCE@ 2.11.91
@@