font-variant-ligatures - CSS(层叠样式表) 编辑
font-variant-ligatures
属性控制着其所应用元素文本的 ligatures 与 contextual forms 。 会使文字最终的表现形式更加统一。
Syntax
/* Keyword values */
font-variant-ligatures: normal;
font-variant-ligatures: none;
font-variant-ligatures: common-ligatures; /* <common-lig-values> */
font-variant-ligatures: no-common-ligatures; /* <common-lig-values> */
font-variant-ligatures: discretionary-ligatures; /* <discretionary-lig-values> */
font-variant-ligatures: no-discretionary-ligatures; /* <discretionary-lig-values> */
font-variant-ligatures: historical-ligatures; /* <historical-lig-values> */
font-variant-ligatures: no-historical-ligatures; /* <historical-lig-values> */
font-variant-ligatures: contextual; /* <contextual-alt-values> */
font-variant-ligatures: no-contextual; /* <contextual-alt-values> */
/* Global values */
font-variant-ligatures: inherit;
font-variant-ligatures: initial;
font-variant-ligatures: unset;
font-variant-ligatures
取值为下列关键字之一。
Values
normal
- 默认值,表示在渲染时会使用常用的连字,连字的效果取决于字体,语言和脚本。
none
- 不使用任何连字,包括常规的形式
- <common-lig-values>
- These values control the most common ligatures, like for
fi
,ffi
,th
or similar. They correspond to the OpenType valuesliga
andclig
. Two values are possible:common-ligatures
activating these ligatures. Note that the keywordnormal
activates these ligatures.no-common-ligatures
deactivating these ligatures.
- <discretionary-lig-values>
- These values control specific ligatures, specific to the font and defined by the type designer. They correspond to the OpenType values
dlig
. Two values are possible:discretionary-ligatures
activating these ligatures.no-discretionary-ligatures
deactivating the ligatures. Note that the keywordnormal
usually deactivates these ligatures.
- <historical-lig-values>
- These values control the ligatures used historically, in old books, like the German tz digraph being displayed as ꜩ. They correspond to the OpenType values
hlig
. Two values are possible:historical-ligatures
activating these ligatures.no-historical-ligatures
deactivating the ligatures. Note that the keywordnormal
usually deactivates these ligatures.
- <contextual-alt-values>
- These values control whether letters adapt to their context—that is, whether they adapt to the surrounding letters. These values correspond to the OpenType values
calt
. Two values are possible:contextual
specifies that the contextual alternates are to be used. Note that the keywordnormal
usually activates these ligatures too.no-contextual
prevents their use.
Formal definition
初始值 | normal |
---|---|
适用元素 | all elements. It also applies to ::first-letter and ::first-line . |
是否是继承属性 | yes |
计算值 | as specified |
Animation type | discrete |
Formal syntax
normal | none | [ <common-lig-values> || <discretionary-lig-values> || <historical-lig-values> || <contextual-alt-values> ]where
<common-lig-values> = [ common-ligatures | no-common-ligatures ]
<discretionary-lig-values> = [ discretionary-ligatures | no-discretionary-ligatures ]
<historical-lig-values> = [ historical-ligatures | no-historical-ligatures ]
<contextual-alt-values> = [ contextual | no-contextual ]
Examples
Setting font ligatures and contextual forms
HTML
<link href="//fonts.googleapis.com/css?family=Lora" rel="stylesheet">
<p class="normal">
normal<br>
if fi ff tf ft jf fj
</p>
<p class="none">
none<br>
if fi ff tf ft jf fj
</p>
<p class="common-ligatures">
common-ligatures<br>
if fi ff tf ft jf fj
</p>
<p class="no-common-ligatures">
no-common-ligatures<br>
if fi ff tf ft jf fj
</p>
<p class="discretionary-ligatures">
discretionary-ligatures<br>
if fi ff tf ft jf fj
</p>
<p class="no-discretionary-ligatures">
no-discretionary-ligatures<br>
if fi ff tf ft jf fj
</p>
<p class="historical-ligatures">
historical-ligatures<br>
if fi ff tf ft jf fj
</p>
<p class="no-historical-ligatures">
no-historical-ligatures<br>
if fi ff tf ft jf fj
</p>
<p class="contextual">
contextual<br>
if fi ff tf ft jf fj
</p>
<p class="no-contextual">
no-contextual<br>
if fi ff tf ft jf fj
</p>
<p class="contextual">
contextual<br>
if fi ff tf ft jf fj
</p>
CSS
p {
font-family: Lora, serif;
}
.normal {
font-variant-ligatures: normal;
}
.none {
font-variant-ligatures: none;
}
.common-ligatures {
font-variant-ligatures: common-ligatures;
}
.no-common-ligatures {
font-variant-ligatures: no-common-ligatures;
}
.discretionary-ligatures {
font-variant-ligatures: discretionary-ligatures;
}
.no-discretionary-ligatures {
font-variant-ligatures: no-discretionary-ligatures;
}
.historical-ligatures {
font-variant-ligatures: historical-ligatures;
}
.no-historical-ligatures {
font-variant-ligatures: no-historical-ligatures;
}
.contextual {
font-variant-ligatures: contextual;
}
.no-contextual {
font-variant-ligatures: no-contextual;
}
.contextual {
font-variant-ligatures: contextual;
}
Result
Specifications
Specification | Status | Comment |
---|---|---|
CSS Fonts Module Level 3 font-variant-ligatures | Recommendation | Initial definition |
Browser compatibility
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