A way to unambiguously, compactly and clearly describe a set of @font-face properties. This is implemented as a simple string. For example.
n4
With these two characters we can choose a font, or generate style and
weight information for an @font-face rule.
font-style: normal;
font-weight: normal;
The order of properties is well defined. Currently:
font-style
font-weight
Forward compatibility is maintained by adding new properties to the end. Possible additions:
font-stretch
font-variant
The possible values for each property are well defined, and a value is required for each property. Values must be a single character. The Font Variation Description value and its equivalent CSS value for each property are as follows.
Each property must have a default value, but may have aliases for use when generating a Font Variation Description. To maintain unambiguous output, there must be no alias return values.
n: normal (default)
i: italic
o: oblique
1: 100
2: 200
3: 300
4: 400 (default, also recognized as 'normal')
5: 500
6: 600
7: 700 (also recognized as 'bold')
8: 800
9: 900
a: ultra-condensed
b: extra-condensed
c: condensed
d: semi-condensed
n: normal (default)
e: semi-expanded
f: expanded
g: extra-expanded
h: ultra-expanded
n: normal
c: small-caps
See compaction test suite, expansion test suite and parser test suite for a complete set of rules.
(no properties)
=> n4
font-style: italic;
=> i4
font-weight: normal;
=> n4
font-weight: bold;
=> n7
font-style: normal;
font-weight: 400;
=> n4
font-style: italic;
font-weight: 500;
=> i5
A CSS class name for a single font
wf-droidserif-n7
Describing an entire family of fonts. Here each variation is delimited by a comma.
"Droid Serif:n4,i4,n7,i7"
This string describes four fonts in the family 'Droid Serif':
- Normal
- Italic
- Bold
- Bold Italic
Copyright (c) 2010 Adobe Systems Incorporated.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, W 644A ITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.