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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/css/font-size-adjust | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/zh-cn/web/css/font-size-adjust/index.html b/files/zh-cn/web/css/font-size-adjust/index.html new file mode 100644 index 0000000000..0aaa5b46dd --- /dev/null +++ b/files/zh-cn/web/css/font-size-adjust/index.html @@ -0,0 +1,145 @@ +--- +title: font-size-adjust +slug: Web/CSS/font-size-adjust +translation_of: Web/CSS/font-size-adjust +--- +<p>{{ CSSRef() }}</p> + +<h2 id="概述">概述</h2> + +<p><code>font-size-adjust</code> CSS属性定义字体大小应取决于小写字母,而不是大写字母。在字体较小时,字体的可读性主要由小写字母的大小决定,通过此选项即可进行调整。</p> + +<p>当<span style="line-height: 19.09090805053711px;">{{ Cssxref("font-family") }}</span>的首选字体不可用时,如果备选字体的尺寸比(小写字母的大小与字体大小的比)有较大的差别时,可读性可能会成为一大问题。</p> + +<p>为了兼容于不支持<code>font-size-adjust的浏览器,该属性的值应该被定义为</code>{{ Cssxref("font-size") }}的值所要乘的系数。 这意味着定义的值应该为首选字体的尺寸比。例如,样式表这样定义</p> + +<pre class="brush: css">font-size: 14px; +font-size-adjust: 0.5; +</pre> + +<p>的真实作用是定义小写字母的大小应该为<code>7px高</code> (0.5 × 14px).</p> + +<p>{{cssinfo}}</p> + +<h2 id="语法">语法</h2> + +<pre class="brush:css">/* 仍使用font size的值 */ +font-size-adjust: none; + +/* 使用小写字母大小为font size一半大小的字体大小 */ +font-size-adjust: 0.5; + +font-size-adjust: inherit; +</pre> + +<h3 id="值">值</h3> + +<dl> + <dt><code>none</code></dt> + <dd>仅根据{{ Cssxref("font-size") }}属性决定字体大小。</dd> + <dt><code><number></code></dt> + <dd> + <p>根据使小写字母大小(根据字体的x-height--西文字体设计中的基线与主线的距离--决定)为该值乘以{{ Cssxref("font-size") }}的结果定义字体。</p> + + <p>数字应为{{ Cssxref("font-family") }}的首选字体的尺寸比(x-height和字体大小的比)。这意味着当首选字体可用时,不论浏览器是否支持<span style="font-family: consolas,monaco,andale mono,monospace;">font-size-adjust,都</span>会显示文字为{{ Cssxref("font-size") }}的大小。</p> + </dd> +</dl> + +<h3 id="正式语法">正式语法</h3> + +<pre class="syntaxbox">{{csssyntax("font-size-adjust")}}</pre> + +<h2 id="示例">示例</h2> + +<p><a href="/samples/cssref/font-size-adjust.html">查看在线演示</a></p> + +<pre class="brush: css">p { + font: 12px Verdana, "DejaVu Sans", sans-serif; + font-size-adjust: 0.58; +} </pre> + +<h2 id="规范">规范</h2> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">规范</th> + <th scope="col">状态</th> + <th scope="col">b</th> + </tr> + </thead> + <tbody> + <tr> + <td>{{ SpecName('CSS3 Fonts', '#propdef-font-size-adjust', 'font-size-adjust') }}</td> + <td>{{ Spec2('CSS3 Fonts') }}</td> + <td> </td> + </tr> + </tbody> +</table> + +<p><code>font-size-adjust</code> CSS属性最初在CSS 2中被定义,但在CSS 2.1被放弃。后又被新添加至CSS 3。</p> + +<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2> + +<p>{{ CompatibilityTable() }}</p> + +<div id="compat-desktop"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Chrome</th> + <th>Firefox (Gecko)</th> + <th>Internet Explorer</th> + <th>Opera</th> + <th>Safari (WebKit)</th> + </tr> + <tr> + <td rowspan="2">Basic support</td> + <td rowspan="2"> + <p class="p1">{{ CompatNo() }}</p> + </td> + <td>1.0 (1.0)<br> + Windows only</td> + <td rowspan="2">{{ CompatNo() }} </td> + <td rowspan="2">{{ CompatNo() }} </td> + <td rowspan="2">{{ CompatNo() }} </td> + </tr> + <tr> + <td>{{ CompatGeckoDesktop("1.9") }}<br> + All platforms</td> + </tr> + </tbody> +</table> +</div> + +<div id="compat-mobile"> +<table class="compat-table"> + <tbody> + <tr> + <th>Feature</th> + <th>Android</th> + <th>Firefox Mobile (Gecko)</th> + <th>IE Phone</th> + <th>Opera Mobile</th> + <th>Safari Mobile</th> + <th>Chrome for Android</th> + </tr> + <tr> + <td>Basic support</td> + <td>{{ CompatUnknown() }}</td> + <td>{{ CompatGeckoMobile("1.9.2") }}</td> + <td>{{ CompatUnknown() }}</td> + <td>{{ CompatUnknown() }}</td> + <td>{{ CompatUnknown() }}</td> + <td>{{CompatChrome(42.0)}}</td> + </tr> + </tbody> +</table> +</div> + +<h2 id="参见">参见</h2> + +<ul> + <li><a class="external" href="http://dbaron.org/log/20080613-firefox3-css#font-size-adjust" title="http://dbaron.org/log/20080613-firefox3-css#font-size-adjust">David Baron about font-size-adjust</a></li> +</ul> |